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TABLE OF CONTENTS
Index to Consolidated Financial Statements and Financial Statement Schedules



UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

ýANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2004

OR

o

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period                               to                                

x                              ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2006

OR

o                                 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from          to          

Commission file number 1-8993

WHITE MOUNTAINS INSURANCE GROUP, LTD.

(Exact name of Registrant as specified in its charter)

Bermuda

Bermuda94-2708455

(State or other jurisdiction of incorporation or organization)

94-2708455

(I.R.S. Employer Identification No.)


80 South Main Street

Hanover, New Hampshire

03755-2053

(Address of principal executive offices)



03755-2053

(Zip Code)

Registrant's

Registrant’s telephone number, including area code: (603) 640-2200

Securities registered pursuant to Section 12(b) of the Act:

Title of each class


Name of each exchange on which registered


Common Shares, par value $1.00 per share

New York Stock Exchange

per share

Bermuda Stock Exchange

Securities registered pursuant to sectionSection 12(g) of the Act:

None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x No o

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes o No x

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ýx No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the Registrant'sRegistrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ýo

Indicate by checkmarkcheck mark whether the registrantRegistrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

Large accelerated filer x

Accelerated filer o

Non-accelerated filer o

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ýo No ox

The aggregate market value of voting shares (based on the closing price of those shares listed on the New York Stock Exchange and the consideration received for those shares not listed on a national or regional exchange) held by non-affiliates of the Registrant as of June 30, 2004,2006, was $2,938,462,920.$3,025,848,367.

As of March 1, 2005, 10,774,589February 28, 2007, 10,833,788 common shares, par value of $1.00 per share, ("Common Shares"), were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant'sRegistrant’s Definitive Proxy Statement to be filed with the Securities and Exchange Commission ("SEC"(“SEC”) pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended (the "Exchange Act"“Exchange Act”), relating to the Registrant'sRegistrant’s Annual General Meeting of Members scheduled to be held May 19, 200524, 2007 are incorporated by reference into Part III of this Form 10-K. With the exception of the portions of the Proxy Statement specifically incorporated herein by reference, the Proxy Statement is not deemed to be filed as part of this Form 10-K.







TABLE OF CONTENTS

PART I


ITEM 1.



Business



3

2

General

3

2

OneBeacon

4

3

White Mountains Re

16

Esurance

24

23

Other Operations

28

27

Investments

29

28

Regulation

31

30

Ratings

34

32

Employees

34

33

Available Information

34

33

ITEM 2.1A.

PropertiesRisk Factors

34

ITEM 1B.

Unresolved Staff Comments

39

ITEM 2.

Properties

39

ITEM 3.

Legal Proceedings

35

40

ITEM 4.

Submission of Matters to a Vote of Security Holders

36

40




Executive Officers of the Registrant and its Subsidiaries



36

41


PART II


PART II

ITEM 5.



Market for the Company'sCompanys Common Equity, Related Shareholder Matters and Issuer Purchase of Equity Securities



38

42

ITEM 6.

Selected Financial Data

39

43

ITEM 7.

Management'sManagements Discussion and Analysis of Financial Condition and Results of Operations

40

44

Non-GAAP Financial Measures

55

59

Liquidity and Capital Resources

55

59

Transactions With Related Party TransactionsPersons

64

67

Critical Accounting Estimates

64

68

Forward-Looking Statements

79

88

ITEM 7A.

Quantitative and Qualitative Disclosures About Market Risk

80

88

ITEM 8.

Financial Statements and Supplementary Data

81

91

ITEM 9.

Changes in and Disagreements withWith Accountants on Accounting and Financial Disclosure

81

91

ITEM 9A.

Controls and Procedures

81

91

ITEM 9B.

Other Information

82

92


PART III


ITEM 10.

PART III



Directors and Executive Officers


82

ITEM 10.

Directors, Executive Officers and Corporate Governance

92

ITEM 11.

Executive Compensation

82

92

ITEM 12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

82

92

ITEM 13.

Certain Relationships and Related Transactions, and Director Independence

83

92

ITEM 14.

Principal Accountant Fees and Services

83

92


PART IV


PART IV

ITEM 15.



Exhibits and Financial Statement Schedules and Reports on Form 8-K



83

93


CERTIFICATIONS



C-1

CERTIFICATIONS





PART I


PART I

Item 1. Business

GENERAL

GENERAL

White Mountains Insurance Group, Ltd. (the "Company"“Company” or the "Registrant"“Registrant”) was originally formed as a Delaware corporation in 1980. In October 1999, the Company completed a corporate reorganization that changed its domicile from Delaware to Bermuda. The Company'sis an exempted Bermuda limited liability company whose principal businesses are conducted through its subsidiaries and affiliates in the businesses of property and casualty insurance and reinsurance.reinsurance subsidiaries and affiliates. Within this report, the term “White Mountains” is used to refer to one or more entities within the consolidated organization, is referred to as "White Mountains".the context requires. The Company'sCompany’s headquarters are located at Bank of Butterfield Building, 42 Reid Street, Hamilton, Bermuda HM 12, its principal executive office is located at 80 South Main Street, Hanover, New Hampshire 03755-2053 and its registered office is located at Clarendon House, 2 Church Street, Hamilton, Bermuda HM 11. White Mountains'Mountains’ reportable segments are OneBeacon, White Mountains Re, Esurance and Other Operations.

The OneBeacon segment consists of the OneBeacon Insurance Group, LLCLtd. (“OneBeacon Ltd.”), a Bermuda-based company that owns a family of companies (collectively "OneBeacon"), which are U.S.-based property and casualty insurance writers,companies (collectively “OneBeacon”), substantially all of which operate in a multi-company pool. OneBeacon offers a wide range of specialty, personal and commercial products and services sold primarily through select independent agents.agents and brokers. OneBeacon was acquired by White Mountains from Aviva plc ("Aviva", formerly CGU) on June 1,in 2001 (the "OneBeacon Acquisition"“OneBeacon Acquisition”). During the fourth quarter of 2006, White Mountains sold 27.6 million, or 27.6%, of OneBeacon Ltd.’s common shares in an initial public offering (the “OneBeacon Offering”). In connection with the OneBeacon Offering, White Mountains undertook an internal reorganization (the “Reorganization”) and formed OneBeacon Ltd. for the purpose of holding certain of its property and casualty insurance businesses. As a result of the Reorganization, certain of White Mountains’ businesses that have been historically reported as part of its Other Operations segment are now owned by OneBeacon Ltd., and accordingly have been included in the OneBeacon segment for all periods presented in this report. In addition, certain other businesses of White Mountains that had been historically reported as part of its OneBeacon segment and which were not held by OneBeacon Ltd. following the OneBeacon Offering are included in the Other Operations segment for all periods presented in this report.

The White Mountains Re segment consists of White Mountains Re Group, Ltd., a Bermuda-based company, and its subsidiaries.subsidiaries (collectively “White Mountains Re”). White Mountains Re offers leadreinsurance capacity for reinsurance on mostproperty, liability, property and accident & health, aviation and certain marine exposures on a worldwide basis through its reinsurance subsidiaries, Folksamerica Reinsurance Company (together(“Folksamerica Re”, together with its immediate parent, Folksamerica Holding Company "Folksamerica"(“FHC”), “Folksamerica”), which has been a wholly-owned subsidiary of White Mountains since 1998)1998, and Sirius International Insurance Corporation ("(“Sirius International"International”). On April 16, 2004, White Mountains acquired Sirius Insurance Holdings Sweden AB and its subsidiaries ("Sirius"(“Sirius”) from ABB Ltd. (the "Sirius Acquisition"“Sirius Acquisition”). The principal companies acquired were Sirius International, Sirius America Insurance Company ("(“Sirius America"America”), which provides primary insurance programs in the United States, and Scandinavian Reinsurance Company Ltd. ("(“Scandinavian Re"Re”), a reinsurance company that has been in run-off since 2002. White Mountains Re also provides reinsurance advisory services, specializing primarily in international property and marine excessother short-tailed lines of reinsurance, through White Mountains Re Underwriting Limited (domiciled in Ireland and formed in 2001) andServices Ltd. (“WMRUS”). On August 3, 2006, White Mountains Underwriting (Bermuda) Limited, formedRe sold Sirius America to an investor group. As part of the transaction, White Mountains acquired an equity interest of approximately 18% in 2003 (collectively, "WMU"the acquiring entity, Lightyear Delos Acquisition Corp. (“Delos”)., and accounts for Delos on the equity method within its Other Operations segment.

The Esurance segment consists of Esurance Holdings Inc.Ltd., a Bermuda-based company, and certain of its subsidiaries (collectively, "Esurance"“Esurance”). Esurance, which has been a unit of White Mountains since October 2000, markets sells personal auto insurance directly to customers online and through select online agents.

White Mountains'Mountains’ Other Operations segment consists of the Company and its intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”), its weather risk management business (“Galileo”), its variable annuity reinsurance business (“WM Life Re”), as well as the International American Group, Inc. (the "International“International American Group"Group”). and various other entities not included in the other segments. The International American Group, which was acquired by White Mountains in 1999, consists of American Centennial Insurance Company ("(“American Centennial"Centennial”) and British Insurance Company of Cayman ("(“British Insurance Company"Company”), both of which are in run-off.

        On November 30, 2004, The Other Operations segment also includes White Mountains completed a significant corporate reorganization. As partMountains’ investments in warrants to purchase common shares of the reorganization, ownership of Folksamerica was transferred to White MountainsMontpelier Re from Fund American Companies, Inc. ("Fund American"Holdings, Ltd. (“Montpelier Re”), which remains OneBeacon's parent. As a result, the legal organization of White Mountains' subsidiaries is consistent with its main operating businesses (i.e., OneBeacon, White Mountains Re and Esurance), and White Mountains Re is now a cohesive,



global reinsurance organization. The reorganization also allows warrants to purchase common shares of Symetra Financial Corporation (“Symetra”) and common and preferred shares of Delos.

White Mountains to independently manage the financial structures of its main operating segments.


White Mountains'Mountains’ Operating Principles

White Mountains strives to operate within the spirit of four operating principles. These are:

Underwriting Comes First.An insurance enterprise must respect the fundamentals of insurance. There must be a realistic expectation of underwriting profit on all business written, and demonstrated fulfillment of that expectation over time,overtime, with focused attention to the loss ratio and to all the professional insurance disciplines of pricing, underwriting and claims management.

Maintain a Disciplined Balance Sheet.The first concern here is that insurance liabilities must always be fully recognized. Loss reserves and expense reserves must be solid before any other aspect of the business can be solid. Pricing, marketing and underwriting all depend on informed judgment of ultimate loss costs and that can be managed effectively only with a disciplined balance sheet.

Invest for Total Return.Historical insurance accounting has tended to hide unrealized gains and losses in the investment portfolio and over rewardover-reward reported investment income (interest and dividends). Regardless of the accounting, White Mountains must invest for the best growth in after-tax value over time.overtime. In addition to investing our bond portfolios for total after-tax return, that will also mean prudent investment in a balanced portfolio consistent with leverage and insurance risk considerations.

Think Like Owners.Thinking like owners has a value all its own. There are stakeholders in a business enterprise and doing good work requires more than this quarter'squarter’s profit. But thinking like an owner embraces all that without losing the touchstone of a capitalist enterprise.

ONEBEACON
ONEBEACON

        On June 1, 2001, White Mountains purchased CGU Corporation from Aviva and renamed the company OneBeacon. HeadquarteredOneBeacon, whose United States headquarters is in Boston,Canton, Massachusetts, OneBeacon is one of the oldesta property and casualty insurers in the United States, tracing its roots to 1831 and the Potomac Fire Insurance Company. OneBeacon's legacy includes being among the first to issue automobile policies, honoring claims arising from the great San Francisco earthquake and the sinkinginsurance writer that provides a range of the Titanic,specialty insurance products as well as insuring several U.S. presidents.

a variety of segmented commercial and personal insurance products. With roots dating back to 1831, OneBeacon has been operating for more than 175 years and has many long-standing relationships with independent agencies, which is its primary distribution channel. At December 31, 2004December31, 2006 and 2003,2005, OneBeacon had $10.0$9.9 billion and $11.3$9.8 billion of total assets, respectively, and shareholder'sshareholder’s equity of $2.3$1.8 billion and $2.2$1.3 billion, respectively. OneBeacon'sAs a result of the OneBeacon Offering, White Mountains recorded $491 million of minority interest related to its ownership in OneBeacon as of December 31, 2006. OneBeacon wrote approximately $2.0 billion and $2.1 billion in net written premiums in 2006 and 2005, respectively. OneBeacon’s principal operating insurance subsidiaries are rated "A"“A” (Excellent, the third highest of fifteen ratings) by A.M. Best aand “A” (Strong, the sixth highest of twenty-one ratings) by Standard & Poor’s, rating agency which specializesagencies that specialize in the insurance and reinsurance industry.


Property and Casualty Insurance Overview

Generally, property and casualty insurance companies write insurance policies in exchange for premiums paid by its customers (the insured). An insurance policy is a contract between the insurance company and the insured where the insurance company agrees to pay for losses suffered by the insured that are covered under the contract. Such contracts often are subject to subsequent legal interpretation by courts, legislative action and arbitration. Property insurance generally covers the financial consequences of accidental losses to the insured'sinsured’s property, such as a home and the personal property in it, or a business'business’ building, inventory and equipment. Casualty insurance (often referred to as liability insurance) generally covers the financial consequences of a legal liability of an individual or an organization resulting from negligent acts and omissions causing bodily injury and/or property damage to a third party. Claims on property coverage generally are reported and settled in a relatively short period of time, whereas those on casualty coverage can take years, even decades, to settle.



Insurance companies derive substantially all of their revenues from earned premiums, investment income and net gains and losses from sales of investment securities. Earned premiums represent premiums received from insureds, which are recognized as revenue over the period of time during whichthat insurance coverage is provided (i.e., ratably over the life of the policy). A significant period of time normally elapses between the receipt of insurance premiums and the payment of insurance claims. During this time, investment income is generated, consisting primarily of


interest earned on fixed maturity investments and dividends earned on equity securities. Net realized investment gains and losses result from sales of securities from the insurance companies'companies’ investment portfolios.

Insurance companies incur a significant amount of their total expenses from policyholder losses, which are commonly referred to as "claims"“claims”. In settling policyholder losses, various loss adjustment expenses ("LAE"(“LAE”) are incurred, such as insurance adjusters'adjusters’ fees and litigation expenses. In addition, insurance companies incur policy acquisition expenses, such as commissions paid to agents and premium taxes, and other expenses related to the underwriting process, including compensation and benefits for professional and clerical staff.

The key measure of relative underwriting performance for an insurance company is the combined ratio. An insurance company'scompany’s combined ratio under accounting principles generally accepted in the United States ("GAAP"(“GAAP”) is calculated by adding the ratio of incurred loss and LAE to earned premiums (the "loss ratio"“loss ratio”) and the ratio of commissions, premium taxespolicy acquisition and other underwriting expenses to earned premiums (the "expense ratio"“expense ratio”). A combined ratio under 100% indicates that an insurance company is generating an underwriting profit. However, when considering investment income and investment gains or losses, insurance companies operating at a combined ratio of greater than 100% can be profitable.


Lines of Business

        OneBeacon providesOneBeacon’s business is managed through three major underwriting units: specialty lines, insurance productscommercial lines and a variety of segmentedpersonal lines. OneBeacon’s specialty lines businesses are national in scope, while its commercial and personal lines insurance products (for individuals) andbusinesses have been concentrated primarily in the Northeastern United States.

Beginning in the fourth quarter of 2006, OneBeacon includes OneBeacon Specialty Property (“OBSP”) within its commercial lines insurance products (for businesses).underwriting unit and AutoOne Insurance (“AutoOne”) within its personal lines underwriting unit. Both OBSP and AutoOne were formerly reported in its specialty lines underwriting unit. The reporting change was undertaken to better align the reported results of OneBeacon’s underwriting units with the product and management structure of its underwriting units. Prior periods have been reclassified to conform to current year presentation.

        OneBeacon has builtFor the twelve months ended December 31, 2006, 2005 and 2004, OneBeacon’s net written premiums by line of business were as follows:

Net written premiums by line of business

 

Year Ended December 31,

 

Millions

 

2006

 

2005

 

2004

 

Specialty

 

$

437.6

 

$

548.8

 

$

565.7

 

Personal

 

800.6

 

910.2

 

1,063.3

 

Commercial

 

718.3

 

654.4

 

826.8

 

Other(1)

 

1.1

 

7.7

 

3.3

 

Total

 

$

1,957.6

 

$

2,121.1

 

$

2,459.1

 


(1)     Includes business in run-off.

                           Specialty lines

OneBeacon’s specialty lines underwriting unit is a collection of niche businesses by providing customized coverages to certain niche markets. These specialtythat focus on solving the unique needs of particular customer groups on a national scale. Each of these businesses are not subject to extreme competitive market conditions and are distinct in their product design. Each specialty business has its own maintains stand-alone operations and distribution channels that targettargeting their specific customer groups. OneBeacon'sOneBeacon provides distinct products and offers tailored coverages and services, managed by teams of market specialists.

OneBeacon���s specialty lines insurancebusinesses currently include:

·OneBeacon Professional Partners (“OBPP”): Formed in 2002, OBPP is a provider of specialty liability products primarily focused on the health-care industry. Additional products include the following:

    Ocean marine: covers losses to an insured's vessel and/media liability and lawyers’ professional liability insurance. OBPP’s health-care products include hospital professional liability, or its cargo as a result of collision, fire, piracyHPL, HMO reinsurance, providers excess insurance and other perils. Ocean marine coverages include cargo, hull, protection and indemnity, primary and excess liability, marina package, comprehensive marina liability package and yacht products.

    Agricultural and rural marketplace products: policies providing property, liability, automobile and/or umbrella coverages for dairy farms, equine farms, farm equipment dealers, orchard and garden farms, as well as farm owners and rural telephone companies and personal auto and homeowners coverage in rural markets, excluding crop damage claims.

    Limited Assigned Distribution ("LAD") services: OneBeacon offers LAD services and takeout credits to insurance companies required to accept future assignments from the New York Automobile Insurance Plan ("NYAIP") and the New Jersey Personal Automobile Insurance Plan ("NJ PAIP").

    Medicalmanaged care errors and omissions: provides coverage foromissions, or MCE&O. These products protect against claims arising from direct patient treatment, such as making diagnoses, rendering opinions or providing advice or referral to another physician. Medical errorsreferrals, and omissions also provide coverage for professional committee activities asactivities. In 2005, OBPP broadened its capabilities through two acquisitions and the formation of a membernew business. First Media Insurance Specialists, Inc. was acquired to distribute OBPP’s new product line of an accredited hospital staffprimary and excess media liability coverages targeting small-to-midsized media companies (that include publishers, broadcasters and authors). OBPP also acquired the renewal rights to the HPL and MCE&O business of Chubb Specialty Insurance. Additional net written premiums from both transactions totaled $38 million


    in 2006. In November 2005, OBPP began offering lawyers’ professional liability coverage targeting law firms employing fewer than 150 attorneys.

    ·International Marine Underwriters (“IMU”): A leading provider of marine insurance, this business traces its roots back to the early 1900s. The IMU acquisition from Crum & Forster in the early 1990s doubled the company’s book of marine business. IMU coverages include physical damage or any professional medical association or


      committee. These coverages are generally offered to mid-sized hospitals and/or managed care organizationsloss, and to individual physicians, but only through selected programs.general liability for cargo and commercial hull, both at primary and excess levels, marinas, including a “package” product (comprehensive property and liability coverage), and yachts (the offerings for which were strengthened by IMU’s October 2006 acquisition of yacht-specialist National Marine Underwriters, Inc., a yacht insurance managing general agency). IMU does not offer offshore energy products. Target customers include ferry operators and charter boats (hull), marina operators and boat dealers (package product) and private-pleasure yachts with hull values of less than $1 million.

    Tuition reimbursement: covers

    ·A.W.G. Dewar (“Dewar”): A provider of tuition payments due toreimbursement insurance since 1930, Dewar’s product protects both schools and collegesparents from the financial consequences of a student’s withdrawal or dismissal from school. The tuition refund plan reimburses parents up to 100 percent of tuition, room and board fees when a student is unableobliged to completeleave school due to covered reasons, such as medical or expulsion. Dewar provides customized policies to independent schools and colleges in North America.

    ·                  Community Banking Professional Liability (“CBPL”): Formed in November 2005, this group provides professional liability coverages for community banks with assets of $3 billion or less. Its full array of management and professional liability coverages includes employment practices liability, fiduciary liability, lender’s liability, bankers professional liability, trust errors and omissions, and directors and officers liability. This group also offers community banking customers access to commercial package products, thereby providing comprehensive insurance solutions to this customer group. CBPL is augmented by strategically positioned underwriting specialists in other markets (such as the Northeast and the Midwest).

    ·                  Specialty Accident and Health (“A&H”): Formed in November 2006, this group provides accident insurance coverages to large employers (generally Fortune 1000) on a semestergroup basis. The full array of anticipated product coverages include corporate accident, travel accident and occupational accident coverage primarily targeted to the trucking industry. This group conducts business through independent agents and brokers and will selectively market directly to customers.

    OneBeacon offered additional rural and farm related products through National Farmers Union Property and Casualty Company (“NFU”) until its sale on September 30, 2005 and commercial farm and ranch and commercial agricultural products through its Agri division until the sale of the renewal rights of its policies on September 29, 2006.

    For the twelve months ended December 31, 2006, 2005 and 2004, OneBeacon’s specialty lines net written premiums were as follows:

    Specialty lines net written premiums

     

    Year Ended December 31,

     

    Millions

     

    2006

     

    2005

     

    2004

     

    OBPP

     

    $

    179.3

     

    $

    149.5

     

    $

    119.5

     

    IMU

     

    139.9

     

    133.6

     

    136.5

     

    Dewar, CBPL and A&H

     

    53.7

     

    49.2

     

    47.6

     

    Total on-going specialty lines

     

    372.9

     

    332.3

     

    303.6

     

    NFU(1)

     

     

    132.5

     

    178.5

     

    Agri(1)

     

    64.7

     

    84.0

     

    83.6

     

    Total specialty lines

     

    $

    437.6

     

    $

    548.8

     

    $

    565.7

     


    (1)     OneBeacon sold NFU on September 30, 2005 and sold the renewal rights to its Agri division policies on September 29, 2006.


    Commercial lines

    OneBeacon provides insurance solutions for middle market and small businesses through products that target particular industry groups with customized coverages and services. In late 2004, OneBeacon’s commercial lines underwriting unit was separated into middle-market and small business divisions to enable a resultspecialized focus in each market and to recognize the difference in product needs, customers and service requirements.

    OneBeacon’s middle market accounts typically produce annualized gross premiums ranging from $25,000 to $1,000,000 and principally purchase “package” policies (combination policies offering property and liability coverage). OneBeacon targets 13 distinct customer groups including technology, financial institutions, professional services, wholesalers, metalworkers and commercial real estate, among others. OneBeacon also provides some standard commercial business that is not targeted to a specific industry group. By partnering with its specialty lines businesses, OneBeacon’s middle market commercial lines business can deliver a seamless, comprehensive insurance solution. OneBeacon has also formed strategic partnerships with specialized insurance agencies to offer OneBeacon coverage to targeted customer groups such as technology companies and community banks.

    Included in the middle market division of an illness, accident or certain other causes.

    ��
    Excess and surplus property:OneBeacon is OBSP. Formed in 2004, OBSP provides excess property covers the insuredcoverage against certain damages over and above those covered by primary policies. Surpluspolicies or a large self-insured retention. Target classes include apartments and condominiums, commercial real estate, small-to-medium manufacturing, retail/wholesale and public entity and educational institutions. Its excess property provides specialized insurance coverage in instances where such coverage is unavailable from insurers licensed within a particular state. OneBeacon entered the excess andsolutions are provided primarily through surplus lines propertywholesalers in all 50 states and the District of Columbia.

    OneBeacon also markets package, auto, workers compensation and umbrella coverage to small businesses, which typically generate annualized premiums ranging from $500 to $25,000. OneBeacon targets 14 industry groups as well as some association and group businesses that provide a highly competitive solution for select agents. OneBeacon’s small-business growth strategy is to target insurance networks of typically suburban and rural agents that represent a strong customer base in those areas. OneBeacon’s proprietary web platform has expedited underwriting at the point of sale, which has enabled growth in new territories while limiting the need for much incremental infrastructure. In the first quarter of 2006, OneBeacon introduced a small business in 2004.

        OneBeacon's personal lines coverages include homeowners insurance, segmented private passenger automobile and package policies sold through select independent agents. In addition, OneBeacon provides management servicesservice center to handle customer administration for a fee to reciprocal exchanges. OneBeacon's focus onenrolled agents.

OneBeacon’s commercial lines isproducts include:

·Multi-peril: consists of a package policy sold to write property,small to mid-sized insureds or to members of trade associations or other groups that includes general liability automobile and other related lines for small and mid-sized businesses for specific industry segments. While its personalinsurance and commercial businesses are subject to more competitive pressures, OneBeacon believes that through proper segmentation in product design and rating, OneBeacon has created certain specialty niches in these segments. OneBeacon's objective is to underwrite only profitable business without regard to market share or premium growth. OneBeacon's personal and commercial lines insurance products include the following:property insurance.

    Automobile:

    ·Automobile: consists of physical damage and liability coverage. Automobile physical damage insurance covers loss or damage to vehicles from collision, vandalism, fire, theft or other causes. Automobile liability insurance covers bodily injury of others, damage to their property and costs of legal defense resulting from a collision caused by the insured.

    Homeowners:

    ·Workers compensation: covers lossesan employer’s liability for injuries, disability or death of employees, without regard to an insured's home, including its contents,fault, as a result of weather, fire, theftprescribed by state workers compensation law and other causes, and losses resulting fromstatutes.

    ·General liability for acts of negligence by the insured or the insured's immediate family.

    Commercial property: covers losses to a business' premises, inventory and equipment as a result of weather, fire, theft and other causes.

    General liability:: covers businesses for any liability resulting from bodily injury and property damage arising from its general business operations, accidents on its premises and the products it manufactures or sells.

    Umbrella: supplements existing insurance policies by covering losses from a broad range of insurance risks in excess of coverage provided by the primary insurance policy up to a specified limit.

    Workers compensation:

    ·Property: covers an employer's liability for injuries, disability or deathlosses to a business’ premises, inventory and equipment as a result of employees, without regard to fault, as prescribed by state workers compensation lawweather, fire, theft and other statutes.

    Multi-peril:causes.

    ·Excess and surplus property: provides excess property coverage against certain damages over and above those covered by primary policies or a package policy sold to small to mid-sized insureds or to members of trade associations or other groups that includes general liability insurance and commercial property insurance.

    large self-insured retention.

    ·Inland marine:marine: covers property that may be in transit or held by a bailee at a fixed location, movable goods that are often stored at different locations or property with an unusual antique or collector'scollector’s value.

·Package: consists of combination policies offering property and liability coverage.


    For the twelve monthsyears ended December 31, 2006, 2005 and 2004, 2003 and 2002, OneBeacon's net written premiums by line of business were as follows:

     
     Year Ended December 31,
    Net written premiums by line of business

     2004
     2003
     2002
     
     ($ in millions)

    Specialty $848.5 $733.7 $696.6
    Personal  724.7  676.8  845.2
    Commercial  807.1  426.7  454.6
    Other lines(1)  78.8  135.3  526.4
      
     
     
    Total $2,459.1 $1,972.5 $2,522.8
      
     
     

    (1)
    Other lines of business for 2004 are primarily from premiums written by reciprocal insurance exchanges administered by OneBeacon, while Other lines of business for 2003 and 2002 are primarily from business assumed from Liberty Mutual Insurance Group ("Liberty Mutual").

      Specialty Lines

            OneBeacon's specialty businesses include a LAD service provider (AutoOne Insurance), rural and farm related products (offered through National Farmers Union Property and Casualty Company, "NFU"), ocean marine (offered through International Marine Underwriters, "IMU"), medical errors and omissions (offered through OneBeacon Professional Partners, "OBPP"), agricultural ("Agri"), and other specialty products, such as tuition reimbursement. Additionally, in 2004, OneBeacon entered into the excess and surplus lines property business with the introduction of OneBeacon Specialty Property ("OBSP"). For the twelve months ended December 31, 2004, 2003 and 2002, OneBeacon's specialtycommercial lines net written premiums were as follows:

     
     Year Ended December 31,
    Specialty lines net written premiums

     2004
     2003
     2002
     
     ($ in millions)

    AutoOne Insurance $263.1 $233.8 $246.9
    National Farmers Union Property & Casualty  178.5  169.0  165.5
    International Marine Underwriters  136.5  125.7  109.0
    OneBeacon Professional Partners  119.5  68.7  28.7
    Agricultural  83.6  84.0  103.0
    OneBeacon Specialty Property  19.2    
    Other  48.1  52.5  43.5
      
     
     
    Total specialty lines $848.5 $733.7 $696.6
      
     
     

    Commercial lines net written premiums

     

    Year Ended December 31,

     

    Millions

     

    2006

     

    2005

     

    2004

     

    Middle market excluding OBSP

     

    $

    564.8

     

    $

    531.6

     

    $

    699.3

     

    OBSP

     

    51.2

     

    43.6

     

    19.7

     

    Total middle market

     

    616.0

     

    575.2

     

    719.0

     

    Small business

     

    102.3

     

    79.2

     

    107.8

     

    Total commercial lines

     

    $

    718.3

     

    $

    654.4

     

    $

    826.8

     

     As a condition to its license to write automobile business within New York, an

                               Personal lines

    OneBeacon’s personal lines underwriting unit provides homeowners insurance, carrier is obligated by statute to accept future assignments from the NYAIP, a residual insurance market that obtains personal automobile insurance for those individuals who cannot otherwise obtain it in the voluntary insurance market. Alternatively, an insurance carrier can contractually satisfy its NYAIP obligation by (1) transferring its NYAIP assignments to another insurance company, or (2) through utilization of various credits offered by New York to those insurers who voluntarily write policies for individuals in the NYAIP. The process of transferring NYAIP obligations is called Limited Assigned Distribution, and the companies that assume this obligation are called LAD servicing carriers. New Jersey and certain other states have similar programs for personal and commercial automobile.

            In 2001, OneBeacon created AutoOne Insurance to provide LAD services and takeout credits to insurance companies required to accept future assignments from the NYAIP. In January 2004, AutoOne



    Insurance also began to handle NJ PAIP business as a LAD servicing carrier. New Jersey is now the second largest market in the United States for LAD servicing carriers, with nearly $300 million in NJ PAIP written premium over the last 12 months. Combined, the New York and New Jersey markets account for nearly 85 percent of personal automobile written premium serviced in the country through LAD servicing carriers. Additionally, AutoOne Insurance expects to begin writing LAD and commercial LAD business in several new states in 2005, including Pennsylvania, Texas, California, Connecticut, Vermont, Maine and Delaware.

            In late 2004, AutoOne Insurance introduced a multi-tieredsegmented private passenger auto product in New York. This sophisticated product utilizes underwriting tiers to move the price point higher or lower based on risk characteristics. The tiered structure is a key element in the design, as it provides the flexibility needed to adjust to changing marketautomobile and competitor conditions.

            During 2004, OneBeacon entered the excess and surplus lines property business through its new OBSP division, which is focused on providing solutions for the excess property market. This new business is developing a portfolio with attachment points and policy limits tailored to specific business-class and market conditions. Target classes include schools and universities, municipalities, habitational risks (apartment/condos.), real estate and related classes (offices buildings, shopping centers), retail, wholesale (warehousing), builders risks and other inland marine classes.

            Since 2001, OneBeacon has expanded its specialty businesses to seven companies which represent 35% of OneBeacon's total net written premiums in 2004.

      Personal Lines

            OneBeacon's personal lines principally include automobile, homeowners and Custom-Pac products (Custom-Pacpackage policies (package products are combination policies offering home and automobile coverage with optional umbrella, boatowners and other coverages). OneBeacon's mix of personal lines products between automobile and homeowners, including Custom-Pac products, was 67% and 25%, respectively, of personal lines net written premium during 2004, compared to 63% and 30%, respectively, during 2003 and 69% and 24%, respectively, during 2002. OneBeacon writes the majority of its personal business in New York, Massachusetts and Maine. sold through select independent agents.

            DuringIn 2004, OneBeacon launchedcreated a newhighly segmented product suite, called OneChoice, under which it is able to offer the appropriate risk-adjusted product and pricing to its customers. OneChoice is a multi-tiered product OneChoice, in the Northeast. OneChoicesuite that enables OneBeacon to offer a broader range of coverages by allowing it to developa full spectrum of customers through more sophisticated pricing models that have a greater statistical correlation between historical loss experience and price than traditional pricing models have shown. OneBeacon believes thismodels. This product will enable it to profitably expand in selected markets throughout the United States.

      Commercial Lines

            OneBeacon's commercial lines products principally include multi-peril, commercialsuite offers both automobile and workers compensation, which represented 54%, 23%homeowners coverages as well as package policies. OneChoice products rely on multiple, objective pricing tiers and 14%, respectively, of commercial lines net written premium during 2004, comparedrules-based underwriting that enable agents to 55%, 23% and 8%, respectively, during 2003 and 52%, 29% and 14%, respectively, during 2002.

            On March 31, 2004,offer OneBeacon acquired Atlantic Specialty Insurance Company ("Atlantic Specialty"),solutions to a subsidiary of Atlantic Mutual Insurance Company ("Atlantic Mutual"), and the renewal rights to Atlantic Mutual's segmented commercial insurance business, including the unearned premiums on the acquired book (the "Atlantic Specialty Transaction"). The overall gross written premium for this book of business totals approximately $400 million. This transaction has allowed OneBeacon to sell a highly segmented product to small and mid-sized companies on an industry basis. These industries include but are not limited to technology, professional services, printers and wholesalers.



            During the third quarter of 2004, OneBeacon entered into an agreement to sell the renewal rights to mostbroad array of its pre-Atlantic Mutual New York commercial businesscustomers and increase OneBeacon’s penetration in existing and new markets. OneBeacon regularly refines its product features and rating plans to Tower Insurance Group. The transaction, effective with December 1, 2004 renewals, will impact approximately $110 million of premiums.optimize target market production. OneBeacon will retain the commercial business acquired from Atlantic Mutual.offers an integrated web-based platform available either through its dedicated agent portal or through real-time comparative rating engines.

      Other Lines

            OneBeacon's otherWithin OneBeacon’s personal lines include the results ofunderwriting unit, OneBeacon also provides management services for a fee to three reciprocal insurance exchanges (“reciprocals”) that OneBeacon has created and capitalized by lending the reciprocals money in exchange for surplus notes. Reciprocals are included in OneBeacon's GAAP results and also business assumed from Liberty Mutual.

            Reciprocal insurance exchanges arenot-for-profit, policyholder-owned insurance carriers organized as unincorporated associations. As partrequired by GAAP, White Mountains’ consolidated financial statements reflect the consolidation of a restructuring of its New Jersey personal lines, inthese reciprocals (See Note 15 - “Variable Interest Entities”).

    In 2002, OneBeacon formed New Jersey Skylands Management LLC to provide management services for a fee to the New Jersey Skylands Insurance Association, a reciprocal, exchange, and its wholly owned subsidiary New Jersey Skylands Insurance Company, (together, the "Association"(collectively, “New Jersey Skylands Insurance”). The AssociationNew Jersey Skylands Insurance began writing personal automobile coverage for new customers in August 2002. Additionally, duringDuring 2004, OneBeacon formed Houston General Insurance Management Company to provide management services for a fee to another reciprocal, exchange,Houston General Insurance Exchange. Houston General Insurance Exchange (the "Exchange")commenced writing business in Arizona, South Carolina and Texas in November 2005, June 2006 and October 2006, respectively, using the full suite of OneChoice products (auto, home and package). In 2006, Adirondack AIF, LLC, a wholly owned subsidiary of OneBeacon, entered into an agreement to provide management services for a fee to Adirondack Insurance Exchange, which was approved to write business in New York. OneBeacon has no ownership interest in New Jersey Skylands Insurance, Houston General Insurance Exchange or Adirondack Insurance Exchange.

    OneBeacon’s personal lines products include:

    ·Automobile: consists of physical damage and liability coverage. Automobile physical damage insurance covers loss or damage to vehicles from collision, vandalism, fire, theft or other causes. Automobile liability insurance covers bodily injury of others, damage to their property and costs of legal defense resulting from a collision caused by the Association or the Exchange. Asinsured.

    ·Homeowners: covers losses to an insured’s home, including its contents, as a result of accounting literature changes,weather, fire, theft and other causes and losses resulting from liability for acts of negligence by the insured or the insured’s immediate family. OneBeacon began consolidating the resultsalso offers identity theft resolution assistance and identity theft expense reimbursement coverage as part of reciprocalits homeowners policies.

    ·Package: consists of customized combination policies offering home and automobile coverage with optional umbrella and boatowners coverage.


    OneBeacon’s personal lines underwriting unit also includes AutoOne. Formed in 2001, AutoOne is a market leader in “assigned risk” business in New York. Assigned risk plans provide automobile insurance exchanges on March 31, 2004 (SeeNote 15—Variable Interest Entitiesfor individuals unable to secure coverage in the accompanying Consolidated Financial Statements)voluntary market. Insurance carriers are obliged to accept future assignments from state assigned risk pools as a condition of maintaining a license to write automobile business in the state. However, carriers may satisfy their assigned risk obligation by transferring their assignments to another insurer or by utilizing various “credits” (i.e. take-out, territorial and youthful driver credits). NetAutoOne offers services known as Limited Assigned Distribution, or LAD, and Commercial Limited Assigned Distribution, or CLAD, and credit programs to insurance carriers. While AutoOne was able to expand its product offerings to an additional 12 states in the first quarter of 2006, its overall volume of business is shrinking due to an expanding voluntary market in New York and New Jersey, where the majority of AutoOne’s assigned risk business is generated. AutoOne now provides 28 LAD and CLAD programs in 22 states where assigned risk obligations may be assumed by a servicing carrier under a negotiated fee arrangement.

    AutoOne also writes “voluntary take-out business” (policies “taken out” of the assigned risk pool and written in the voluntary market) by selecting policies from the assigned risk business it manages for its clients and from select insurance brokers that replace their clients assigned risk policy with an AutoOne policy. AutoOne receives credits for all policies taken out of the assigned risk plan which it can use either to reduce its future assigned risk obligations, or to sell to other carriers that can use the credits to reduce their own quota obligations. In 2006, AutoOne wrote more take-out business than all other carriers in New York combined and all of its take-out credits were sold to other carriers or used internally to reduce OneBeacon’s own assigned risk quota obligation.

    For the years ended December 31, 2006, 2005 and 2004, personal lines net written premiums written by the Associationwere as follows:

    Personal lines net written premiums

     

    Year Ended December 31,

     

    Millions

     

    2006

     

    2005

     

    2004

     

    Traditional excluding reciprocals

     

    $

    492.7

     

    $

    618.8

     

    $

    724.7

     

    Reciprocals

     

    93.2

     

    43.5

     

    75.5

     

    Traditional personal lines

     

    585.9

     

    662.3

     

    800.2

     

    AutoOne

     

    222.6

     

    248.8

     

    275.3

     

    Other(1)

     

    (7.9

    )

    (.9

    )

    (12.2

    )

    Total personal lines

     

    $

    800.6

     

    $

    910.2

     

    $

    1,063.3

     


    (1)     Represents elimination between traditional personal lines and the Exchange that were included in OneBeacon's 2004 results totaled $75.0 million.AutoOne.

            On November 1, 2001, OneBeacon transferred its regional agency business, agents and operations in 42 states and the District of Columbia to Liberty Mutual pursuant to a renewal rights agreement (the "Liberty Agreement"). This transfer amounted to approximately 45% of OneBeacon's total business at the time of transfer. The Liberty Agreement expired on October 31, 2003. As a result, OneBeacon earned premium in 2004 on policies written prior to the expiration, but did not write any new premiums in 2004 under the Liberty Agreement. Net written premiums assumed under the Liberty Agreement were $130.4 million in 2003 and $496.7 million in 2002.


    Geographic Concentration

            OneBeacon'sOneBeacon’s net written premiums are derived solely from business produced in the United States. Business from specialty, personal and commercial lines was produced in the following states:


     Year Ended December 31,
     

     

    Year Ended December 31,

     

    Specialty, personal and commercial net written premiums by state

     
    2004
     2003
     2002
     

     

    2006

     

    2005

     

    2004

     

    New York 30%36%38%

     

    27

    %

    27

    %

    30

    %

    Massachusetts 17 20 19 

     

    17

     

    17

     

    17

     

    California

     

    9

     

    7

     

    8

     

    New Jersey 9 3 8 

     

    8

     

    9

     

    9

     

    California 8 2 2 
    Maine 6 2 7 

     

    6

     

    6

     

    6

     

    Connecticut 5 5 4 

     

    5

     

    5

     

    5

     

    Other(1) 25 32 22 
     
     
     
     

    Other(1)

     

    28

     

    29

     

    25

     

    Total 100%100%100%

     

    100

    %

    100

    %

    100

    %

     
     
     
     

    (1)

    No individual state is greater than 3% of specialty, personal and commercial net written premiums for the years ended December 31, 2004, 20032006, 2005 and 2002.


    Marketing
    2004.

    8




    Marketing

    OneBeacon offers its products thoughthrough a combinationnetwork comprised of independent insurance agents, regional and national brokers wholesalers and captive agents (through NFU). In total, OneBeacon haswholesalers. OneBeacon’s distribution relationships consist of approximately 2,0002,800 select agencies and brokers. No agency and distribution relationships.or broker produced more than 3% of OneBeacon’s direct written premiums during 2006.

            OneBeacon'sOneBeacon’s specialty lines businesses are located in separatemanaged from locations logistically appropriate to their target markets. AutoOne Insurance issuesOBPP is based in Avon, Connecticut and distributes its LAD businessproducts through independent agents, generating takeout credits (inselect national and regional brokers and agents. IMU is headquartered in New York only)City and operates through this business to sell to other insurance carriers subject to NYAIP assignments. IMU distributes itsnine branch locations throughout the United States. Its products are distributed through a network of select agents that specialize in the ocean marine business. AgriDewar’s affiliate, A.W.G. Dewar Agency, is headquartered in Quincy, Massachusetts and distributes tuition refund products to independent schools and colleges throughout North America.

    OneBeacon distributes its commercial and personal lines products through select independent agencies. NFU distributes itsinsurance agents, except for products primarily through a network of exclusive agents. Substantially all of these exclusive agents are under contract with NFUsold by OBSP and the National Farmers Union, a non-profit organization founded in 1902 to advance the interests of family farmers. OBPP distributes its products nationally through excess and surplus lines brokers. OBSP'sAutoOne. OBSP’s excess property solutions are provided primarily through surplus lines wholesalers. ThroughIn New York, AutoOne generates take-out credits by writing policies through select insurance brokers that were previously in the New York Automobile Insurance Plan, or NYAIP, and sells these distribution channels, credits to insurance companies subject to NYAIP assignments. AutoOne markets its LAD and CLAD services and New York take-out credits directly to insurance carriers seeking assigned risk solutions.

    OneBeacon leveragesprotects the integrity of its knowledge about specialty markets to provide products and services that are tailored to meet customer needs.

            OneBeacon distributes its personal and commercial lines products through select independent insurance agents.franchise value by selectively appointing agents in those areas where it conducts business. OneBeacon believes that independent insurance agents provide more complete assessments of their clients'clients’ needs, which results in more appropriate coverages and prudent risk management. OneBeacon also believes that independent agents will continue to be a significant force in overall industry premium production.production as well as facilitate the cross-selling of specialty, commercial and personal business products.


    OneBeacon’s top performing agencies have been designated as Lighthouse Partners, a program designed to strengthen these priority relationships and build those books of business. This program was introduced in the second quarter of 2006 and provides enhanced benefits such as priority handling of accounts, access to OneBeacon’s entire franchise of products, preferred profit-sharing opportunities, and priority access to OneBeacon’s producer development school and co-op advertising. There were 98 agencies with this designation in 2006. These agencies represent fewer than five percent of OneBeacon’s overall agency plant but write approximately 22 percent of OneBeacon’s business and over 25 percent of OneBeacon’s new business. OneBeacon believes that its Lighthouse Partners are the core of its distribution and marketing system and that this deeper mutual commitment will benefit both these agencies and OneBeacon.

    Underwriting and Pricing

    OneBeacon believes that there must be a realistic expectation of attaining an underwriting profit on all the business it writes, as well as a demonstrated fulfillment of that expectation over time.overtime. Adequate pricing is a critical component to the achievement offor achieving an underwriting profit and requiresprofit. OneBeacon will underwrite its book with a disciplined approach towards pricing its insurance products. Inadequate pricing can be caused by pressures from: (1) insurance companies selling their products at rates less than those acceptable to OneBeacon because they either underestimate ultimate claim costs or overestimate the amount of investment income and investment gains they will earn on premiums collected before claims are paid, (2) insurance companiesis willing to acceptforgo a lower returnbusiness opportunity if it believes that the opportunity is not priced appropriately to the exposure.

    Specialization — or a heightened focus on investmentcertain customer groups and/or geographies through products, pricing and expertise — is a key driver of OneBeacon’s strategy in specialty lines and is being extended into OneBeacon’s commercial and personal businesses. The proprietary knowledge OneBeacon develops regarding the industry, class and risk characteristics provides it with a competitive edge for their stakeholders thanits terms and conditions on individual accounts. OneBeacon (3) insurance companies seekingbelieves that specialization will result in superior returns as compared to increase revenues and market share by reducing the price of their products beneath levels acceptable to a more “generalist” underwriting approach.

    OneBeacon (4) the emergence and continued growth of insurance company competitors that have lower cost structures, and (5) state regulation, legislation and judicial mandates.

            Beginning in 2003 and continuing through 2004, OneBeacon introducedhas used tiered rating plans since 2003 in both its commercial and personal and commercial lines which permit OneBeaconlines. Doing so permits it to offer more tailored price pointsquotes to its customers based on underwriting criteria applicable to each tier. As a result, OneBeacon now has the flexibility to renew expiring policies into the appropriate tier rather than being forced to choose to either renew the policy at the same base rate or cancel the policy. Management believes that this significant improvement in theThe enhanced accuracy and precision of OneBeacon'sOneBeacon’s rate plans movesenable it towardto more confidently price its products to the pricing sophisticationexposure, and thereby permits its agency partners to deliver solutions to a broader range of the best insurance underwriters in the market.

            These tiers are just one example of OneBeacon's segmented underwriting and pricing strategy. Segmentation is a key driver of OneBeacon's success in specialty lines and is being carried over into personal and commercial lines. OneBeacon develops proprietary knowledge about a given industry/class/risk type which provides it with a competitive edge when offering terms and conditions on individual accounts. OneBeacon believes this will deliver superior returns versus a more "generalist" underwriting approach.customers.



    OneBeacon also monitors pricing activity on a weekly basis and regularly measures usage of tiers, credits, debits and limits; this includes monthly review calls with all field offices.limits. In addition, itOneBeacon regularly updates base rates to achieve targeted returns on surplus and attempts to shift writings away from price inadequate lines/classes.lines and classes where pricing is inadequate. To the extent changes in premium rates, policy forms or other matters are subject to regulatory approval, OneBeacon proactively monitors its pending regulatory filings to facilitate, to the extent possible, their prompt processing and approval. Lastly, OneBeacon expends considerable effort to measure and verify exposure basesexposures and insured values.


    Competition
    Competition

    Property and casualty insurance is highly competitive and extensively regulated by state insurance departments.competitive. In specialty lines, OneBeacon competes with numerous regional and national insurance companies, most notably The Robert Plan Corporation, The Chubb Corporation, American International Group, The St. Paul Travelers Companies and the regional Farm Bureaus.CNA Financial Corporation. In personalcommercial and commercialpersonal lines, OneBeacon competes with numerous regional and national insurance companies, most notably The St. Paul Travelers Companies, Inc., Zurich InsuranceFinancial Services Group, CNA Financial theCorporation, Hartford Financial Services Group, Allmerica Financial Corporation,Inc., The Hanover Insurance Group, Inc., W.R. Berkley Corporation, The Chubb Corporation, The Progressive Insurance,Corporation, Allstate Insurance Company and Liberty Mutual.Mutual Insurance Company (“Liberty Mutual”). The more significant competitive factors for most insurance products offered by OneBeacon offers are price, product terms and claims service, which OneBeacon believes is the most important product differentiation that it brings to its agents and insureds. OneBeacon'sservice. OneBeacon’s underwriting principles and dedication to independent agency distribution are unlikely to make themit the low-cost provider in most markets. However, while it is often difficult for insurance companies to differentiate their products to consumers, OneBeacon believes that its dedication to providing superior product offerings, expertise and local talent, claims service and localizeddisciplined underwriting experience gives itprovide a competitive advantage over typical low-cost providers.


    Claims Management

    Effective claims management is a critical factor in achieving satisfactory underwriting results. OneBeacon maintains an experienced staff of appraisers, medical specialists, managers, staff attorneys and field adjusters strategically located throughout its operating territories. OneBeacon also maintains a special investigative unit designed to detect insurance fraud and abuse, and supportsupports efforts by regulatory bodies and trade associations to curtail the cost of fraud.

            OneBeacon's claims department's commitment to improvement is producing positive results. In 2004, OneBeacon made several operational changes in the claims department. Claims are now separately organized by specialty, and commercial, lines, personal lines and run-off operations. This segmentation has allowedapproach allows OneBeacon to increase loss cost management specializationbetter identify and better identifymanage claims handling costs. In addition, a shared service unit manages costs related to both staff and vendors. OneBeacon introducedtakes a total claims cost management practice whichapproach that gives equal importance to controlling claims handling costs,expenses, legal expenses and claims payments, enabling OneBeaconit to lower its overall claims handling costs. At the same time, over 97%sum of OneBeacon's insuredsthe three. This approach requires the utilization of approximately fifty metrics to monitor the effectiveness of various programs implemented to lower total loss cost. The metrics are designed to guard against the implementation of an expense containment program that respondedwill cost OneBeacon more than it expects to surveys were satisfiedsave. As an example, an internal legal bill audit team has contributed to savings by the service providedreducing legal invoices submitted by OneBeacon.outside counsel.

            OneBeacon'sOneBeacon’s claims department utilizes a modern claims workstation implemented in 2002, that in addition to recordingrecords reserves, payments and adjuster activity and assists each claimsclaim handler in evaluating bodily injury claims, determining liability and identifying fraud. OneBeacon'sOneBeacon’s commitment and performance in fighting insurance fraud not only reduceshas reduced claim costs but hasand aided law enforcement.enforcement investigations. Under OneBeacon's Staff Counsel Program,its staff counsel program, OneBeacon’s in-house attorneys defended 55%defend the majority of its newly arising suits at anew lawsuits, which has resulted in savings when compared to the cost of $8.0 million less than it would have cost to useusing outside counsel. OneBeacon'sIn addition, OneBeacon’s internal legal bill audit team saved an additional $6.2 millionhas contributed to savings by reducing legal invoices submitted bythe amounts paid to outside counsel.

            Calender year reportedMost of OneBeacon’s claims in OneBeacon's ongoing businesses were down 19% in 2004 compared to 2003. This allowed the claims department personnel to increase their focus on older open claims. At December 31, 2004, total open claims were down 22% from December 31, 2003.



    for run-off operations are handled by in-house adjusters. Calendar year reported claims in OneBeacon'sOneBeacon’s run-off operations have decreased to 1,700 in run-off were2006 compared to 3,400 in 2005 and 5,900 in 2004, comparedin part due to 10,300the lapse of time and the nature of run-off operations. These levels of reported claims are down from 202,000 in 2002 and 64,800 in 2003. Total open claims infor run-off operations were 7,300 at December 31, 2004 were 14,6002006 compared to 28,50010,200 at December 31, 2003,2005, a 49% reduction. This number includes28% reduction, which reflects the success of OneBeacon’s focus on settling claims from its run-off operations. Total open claims for run-off operations were 14,600 in 2004 and 33,000 in 2003. These numbers included all of the claims that were previously handled by Liberty Mutual as a Third Party Administrator ("TPA"(“TPA”). The majority of OneBeacon's claims are handled by in-house adjusters


    In connection with the exceptionpurchase of certainOneBeacon by White Mountains in 2001, to help protect against potential asbestos and environmental claims of certain businesses in run-off. Additionally,relating to the pre-acquisition period, OneBeacon purchased a reinsurance contract (the “NICO Cover”) from the National Indemnity Company ("NICO"(“NICO”) is used as. See the discussion in the “Reinsurance Protection” section below. NICO has retained a TPA, Resolute New England (“Resolute”, formerly Cavell USA), to manage the claims processing for asbestos and environmental reinsurance claims relating toreinsured under the NICO Cover (see "Asbestos and Environmental Reserves" discussion included inCRITICAL ACCOUNTING ESTIMATES inManagement's Discussion and Analysis of Financial Condition and Results of Operations below). OneBeaconCover. OneBeacon’s claims department personnel are consulted by NICO and Resolute on major claims. As with all TPAs, claims department personnel perform claim audits on NICOResolute to ensure their controls, processes and settlements are appropriate. For more information regarding OneBeacon’s A&E exposures, see the “Asbestos and Environmental Reserves” discussion included in “CRITICAL ACCOUNTING ESTIMATES” in “Management’s Discussion and Analysis of Financial Condition and Results of Operations”.

            During the year, OneBeacon identified additional areas in claims processing which will be continuously improved in 2005, including litigation management, expense management and staff productivity.Terrorism


    Terrorism

    Since the terrorist attacks of September 11, 2001 (the "Attacks"“Attacks”), OneBeacon has sought to mitigate the risk associated with any future terrorist attacks by reducinglimiting the aggregate insured value of policies written in geographic areas with a high concentration of exposure to losses from terrorist attacksattacks. This is accomplished by either limiting the total insured values exposed, or, by seekingwhere applicable, through the use of terrorism exclusions.

    On December 22, 2005, the United States government extended the Terrorism Act, which was set to exclude coverageexpire on December 31, 2005, for such losses from their policies.

            Ontwo more years. The Terrorism Act, originally enacted on November 26, 2002, President Bush signed the Terrorism Risk Insurance Act (the "Terrorism Act") establishingestablished a federal "backstop"Federal “backstop” for commercial property and casualty losses, including workers compensation, resulting from acts of terrorism by or on behalf of any foreign person or foreign interest. The Terrorism Act requireslaw limits the industry’s aggregate liability by requiring the Federal government to share 85% of certified losses in 2007 once a company meets a specific retention or deductible as determined by its prior year’s direct written premiums and limits the aggregate liability to be paid by the government and industry without further action by Congress at $100.0 billion. In exchange for this “back-stop,” primary commercial insurers are required to make terrorism coverage available immediatelyto commercial insureds for losses from acts of non-domestic terrorism as specified in the Terrorism Act. The following types of coverage are excluded from the program: commercial automobile, burglary and provides Federal protection above individual company retentiontheft, surety, farmowners multi-peril and aggregate industry retention levels. all professional liability coverage except directors and officers coverage.

    OneBeacon estimates its individual retention level for commercial policies subject to the Terrorism Act to be approximately $160.0$162 million in 2005. Aggregate2007. The aggregate industry retention levels are $15.0level is $27.5 billion for 2005.in 2007. The Federal government will pay 90%85% of covered terrorism losses that exceed either OneBeacon'sOneBeacon’s or the industry'sindustry’s retention levels in 2007 up to $100.0a total of $100 billion.

    The fate of the Terrorism Act beyond 2005 remains uncertain. It is anticipated that Congress will likely rule on a possible extension during the summer of 2005; however, there is a chance that the Terrorism Act could expire on December 31, 2005. To prepare for that possibility, OneBeacon is notifying customers (in states where permitted) with policies that expire in 2006 of the potential implications to their coverage. OneBeacon's current property and casualty catastrophe reinsurance programs provideprotection that OneBeacon currently has obtained provides coverage for "non-certified"“non-certified” events as defined under the Terrorism Act, provided such losses are not the result of a nuclear, biological or chemical attack. See the discussion in the"Reinsurance Protection"Protection” section below for a further description of OneBeacon'sOneBeacon’s catastrophe program.

    OneBeacon closely monitors and manages its concentration of risk by geographic area. BeginningOneBeacon’s strategy is to control its exposures so that its total maximum expected loss from a likely terrorism event within any half-mile radius in 2002 and continuing through 2004,a metropolitan area or around a target risk will not exceed $200 million, or $300 million in all other areas. OneBeacon aggressively reducedmonitors its terrorism exposure inexposures from existing policies on a quarterly basis, and the largest metropolitan areas in which OneBeacon writes insurance by implementing a strategy that limits total probable maximum loss ("PML") from a terrorism event in any half mile radius. (PML is a statistical modeling technique that measures a company's catastrophic exposure as the maximum probable loss in a given time period.) The addition of the Atlantic Mutual book in 2004 resulted in some areas exceeding corporate PML thresholds. In these areas, specific account exposure reduction plans have been established to bring exposures within tolerance levels by the end of 2005. The financial exposure of potential new business is evaluated when it is located in an areaareas of existing concentration or that individually presentspresent significant terrorism exposure. Additionally, formal reports are generated quarterly to validate that action adheres to corporate standards.exposure is evaluated during the underwriting process. As a result, OneBeacon believes that it has taken appropriate actions to mitigatelimit its exposure to losses from future terrorist attacks and it will



    continue to monitor its terrorism exposure in the future. Nonetheless, risks insured by OneBeacon, andincluding those contemplatedcovered by the enacted Terrorism Act, remain exposed to future terrorist attacks and the possibility remains that anylosses resulting from future terrorist lossesattacks could prove to be material to the Company's financial position and/or its cash flows.material.



    Reinsurance Protection

    In the ordinary course of its business, OneBeacon purchases reinsurance from high-quality, highly rated, third party reinsurers in order to provide diversification of its business and minimize loss from large risks or catastrophic events. OneBeacon uses PML forecasting to quantify its exposure to catastrophic losses.

    The timing and size of catastrophe losses are unpredictable and the level of losses experienced in any year could be material to OneBeacon'sOneBeacon’s operating results and financial position. Examples of catastrophes include losses caused by hurricanes, earthquakes, wildfires hurricanes and other types of storms and terrorist acts. The extent of losses caused by catastrophes is both a function of the amount and type of insured exposure in an area affected by the event and the severity of the event. OneBeacon continually assesses and implements programsuses models (primarily AIR V.8) to estimate losses its exposures would generate under various scenarios as well as the probability of those losses occurring. OneBeacon uses this model output in conjunction with other data to manage its exposure to catastrophe losses through individual risk selection and by limiting its concentration of insurance written in catastrophe-prone areas, such as coastal regions. In addition, OneBeacon imposes wind deductibles on existing coastal windstorm exposures. OneBeacon'sOneBeacon believes that its largest single event natural catastrophe risk is Northeast windstorm.exposures are Northeastern United States windstorms and California earthquakes.

    OneBeacon seeks to further reduce its exposure topotential loss from catastrophe lossesexposures through the purchase of catastrophe reinsurance. Effective July 1, 2004,2006, OneBeacon renewed its normal property catastrophe reinsurance program to cover its full estimated PML (one-in-250 year) through June 30, 2005.2007. Under that cover, the first $200.0$200 million of losses resulting from any single catastrophe are retained by OneBeacon and losses from a single event in excess of $200.0the first $200 million and up to $850.0$850 million are reinsured for 100% of the loss. OneBeacon anticipates this $850 million limit is sufficient to cover Northeast windstorm losses with a 0.4%-0.5% probability of occurrence (1-in-250-year event to 1-in-200-year event). In the event of a catastrophe, OneBeacon can reinstate itsOneBeacon’s property catastrophe reinsurance program is automatically reinstated for the remainder of the original contract term by payingfor a reinstatement premium whichthat is based on the percentage of coverage reinstated and the original property catastrophe coverage premium.

            OneBeacon'sOneBeacon’s property catastrophe reinsurance program does not cover personal or commercial property losses resulting from nuclear, biological or chemical terrorist attacks. The program covers personal property losses resulting from other types of terrorist attacks,“certified” events as defined under the Terrorism Act, such as foreign terrorism, provided such losses were not caused by nuclear biological or chemical means. The program also covers personal and commercial property losses resulting from other types of domestic terrorist attacks or“non-certified” events not "certified" as defined under the Terrorism Act. The Terrorism Act, provides protection for commercial propertysuch as domestic terrorist attacks, provided such losses for certified events including those arising fromwere not caused by nuclear, biological or chemical attacks.means.

    OneBeacon also purchases individual property reinsurance coverage for certain risks to reduce large loss volatility. The Property per Riskproperty-per-risk reinsurance program reinsures losses in excess of $5.0$5 million up to $75.0$75 million. Individual risk facultative reinsurance may be purchased above $75.0$75 million where OneBeacon deems it appropriate. The Property per Riskproperty-per-risk treaty also reinsuresprovides one limit of reinsurance protection for losses in excess of $10.0$10 million up to $75.0$75 million on an individual risk basis for terrorism losses. However, nuclear, biological and chemical events are not covered.

    OneBeacon also maintains a casualty reinsurance program whichthat provides protection for individual risk or catastrophe losses involving workers compensation, general liability, automobile liability or automobileumbrella liability in excess of $5.0$6 million up to $60.0$81 million. This program provides one full $55.0 million limitcoverage for either "certified"“certified” or "non-certified"“non-certified” terrorism losses but does not provide coverage for losses resulting from nuclear, biological or chemical attacks.

    In connection with the2001, OneBeacon Acquisition, Aviva caused OneBeacon to purchasepurchased reinsurance contracts with two reinsurance companies rated "AAA" (Extremely Strong)“AAA” (“Extremely Strong”, the highest of twenty-one ratings) by Standard & Poor'sPoor’s and


    "A+ “A++" (Superior)” (“Superior”, the highest of fifteen ratings) by A.M. Best:Best. One contract is a full risk-transferreinsurance cover fromwith NICO forwhich entitles OneBeacon to recover up to $2.5 billion in oldultimate loss and LAE incurred related primarily to A&E claims arising from business written by OneBeacon’s predecessor prior to 1992 for asbestos claims and 1987 for environmental claims (the "NICO Cover") and an adverse developmentclaims. As of December 31, 2006, OneBeacon has ceded estimated incurred losses of approximately $2.1 billion to the NICO Cover. The other contract is a reinsurance cover fromwith General Reinsurance Corporation, ("GRC")or GRC, for up to $400.0$570 million onof additional losses occurring inon all claims arising from accident years 2000 and prior (the "GRC Cover").prior. As of December 31, 2006, OneBeacon has ceded estimated incurred losses of $550 million to the GRC Cover. Pursuant to the GRC Cover, OneBeacon is not entitled to recover losses to the full contract limit if such losses are reimbursed by GRC more quickly than anticipated at the time the contract was signed. OneBeacon intends to only seek reimbursement from GRC for claims which result in payment patterns similar to those supporting the recoverables recorded pursuant to the GRC Cover. The economic cost of not submitting certain other eligible claims to GRC is primarily the investment spread between the rate credited by GRC and the rate achieved by OneBeacon on its investments. This cost, if any, is expected to be small.


    Reinsurance contracts do not relieve OneBeacon of its obligation to its ceding companies.policyholders. Therefore, collectibility of balances due from its reinsurers is critical to OneBeacon'sits financial strength. SeeNote 4 "Third- “Third Party Reinsurance"Reinsurance” in the accompanying Consolidated Financial Statements for a discussion of OneBeacon's topthe largest balances due from OneBeacon’s reinsurers.


    Loss and Loss Adjustment Expense Reserves

    OneBeacon establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. The process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain. See "CRITICAL ACCOUNTING ESTIMATES"ESTIMATES” in "Management's“Management’s Discussion and Analysis of Financial Condition and Results of Operations"Operations” for a full discussion regarding OneBeacon'sOneBeacon’s loss reserving process.

    The following information presents (1) OneBeacon'sOneBeacon’s reserve development over the preceding ten years and (2) a reconciliation of reserves in accordance with accounting principles and practices prescribed or permitted by insurance authorities ("Statutory"(“Statutory” basis) to such reserves determined in accordance with GAAP, each as prescribed by Securities Act Industry Guide No. 6.

    Section I of the ten10 year table shows the estimated liability that was recorded at the end of each of the indicated years for all current and prior accident year unpaid lossesloss and LAE. The liability represents the estimated amount of lossesloss and LAE for claims that were unpaid at the balance sheet date, including incurred but not reported ("IBNR"(“IBNR”) reserves. In accordance with GAAP, the liability for unpaid lossesloss and LAE is recorded in the balance sheet gross of the effects of reinsurance with an estimate of reinsurance recoverables arising from reinsurance contracts reported separately as an asset. The net balance represents the estimated amount of unpaid lossesloss and LAE outstanding as of the balance sheet date, reduced by estimates of amounts recoverable under reinsurance contracts.

    Section II shows the cumulative amount of net loss and LAE paid relating to recorded liabilities as of the end of each succeeding year. Section III shows the re-estimated amount of the previously recorded net liability as of the end of each succeeding year. Estimates of the liability for unpaid lossesloss and LAE are increased or decreased as payments are made and more information regarding individual claims and trends, such as overall frequency and severity patterns, becomes known. Section IIIIV shows the cumulative net (deficiency)/redundancy representing the aggregate change in the liability from original balance sheet dates and the re-estimated liability through December 31, 2004.2006. Section IVV shows the re-estimated gross liability and re-estimated reinsurance recoverables through December 31, 2004.2006. Section VVI shows the cumulative gross (deficiency)/redundancy representing the aggregate change in the liability from original balance sheet dates and the re-estimated liability through December 31, 2006.


    OneBeacon Loss and LAE(1), (3), (4)
    Years Ended December 31,

    ($ in millions)

     

    1996

     

    1997

     

    1998(2)(5)

     

    1999

     

    2000

     

    2001

     

    2002

     

    2003

     

    2004

     

    2005

     

    2006

     

    I. Liability for unpaid losses and LAE: Gross balance

     

    $

    5,804.4

     

    $

    5,655.9

     

    $

    6,869.5

     

    $

    6,276.0

     

    $

    6,875.4

     

    $

    8,320.2

     

    $

    7,507.0

     

    $

    6,109.0

     

    $

    5,328.2

     

    $

    5,713.4

     

    $

    5,108.2

     

    Less: reins. recoverables on unpaid losses and LAE

     

    (1,260.4

    )

    (1,159.2

    )

    (1,641.0

    )

    (1,262.7

    )

    (1,252.1

    )

    (3,591.5

    )

    (3,534.4

    )

    (2,954.8

    )

    (2,670.9

    )

    (3,382.0

    )

    (3,079.7

    )

    Net balance

     

    $

    4,544.0

     

    $

    4,496.7

     

    $

    5,228.5

     

    $

    5,013.3

     

    $

    5,623.3

     

    $

    4,728.7

     

    $

    3,972.6

     

    $

    3,154.2

     

    $

    2,657.3

     

    $

    2,331.4

     

    $

    2,028.5

     

    II. Cumulative net amount of liability paid through

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    1 year later

     

    1,594.8

     

    1,684.3

     

    1,784.3

     

    1,938.1

     

    1,965.3

     

    1,851.6

     

    1,610.2

     

    1,421.1

     

    1,146.7

     

    1,004.6

     

     

    2 years later

     

    2,621.3

     

    2,732.5

     

    2,908.5

     

    3,065.1

     

    3,153.0

     

    3,039.5

     

    2,764.2

     

    2,274.5

     

    1,833.5

     

     

     

     

     

    3 years later

     

    3,331.1

     

    3,515.0

     

    3,643.7

     

    3,824.9

     

    3,984.7

     

    3,963.6

     

    3,489.6

     

    2,809.9

     

     

     

     

     

     

     

    4 years later

     

    3,872.2

     

    4,028.8

     

    4,061.7

     

    4,330.3

     

    4,596.8

     

    4,529.5

     

    3,941.0

     

     

     

     

     

     

     

     

     

    5 years later

     

    4,225.0

     

    4,282.8

     

    4,353.7

     

    4,666.9

     

    4,957.3

     

    4,876.0

     

     

     

     

     

     

     

     

     

     

     

    6 years later

     

    4,398.1

     

    4,464.4

     

    4,555.9

     

    4,887.2

     

    5,194.4

     

     

     

     

     

     

     

     

     

     

     

     

     

    7 years later

     

    4,516.6

     

    4,584.6

     

    4,701.7

     

    5,044.7

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    8 years later

     

    4,609.4

     

    4,694.6

     

    4,801.6

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    9 years later

     

    4,691.3

     

    4,767.3

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    10 years later

     

    4,743.9

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    III. Net liability re-estimated as of:

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    1 year later

     

    4,627.8

     

    5,370.1

     

    5,237.1

     

    5,829.0

     

    4,730.8

     

    4,781.3

     

    4,110.3

     

    3,253.4

     

    2,763.2

     

    2,354.3

     

     

    2 years later

     

    5,476.0

     

    5,424.7

     

    5,916.1

     

    4,942.0

     

    4,824.2

     

    5,059.4

     

    4,227.0

     

    3,380.4

     

    2,765.5

     

     

     

     

     

    3 years later

     

    5,549.0

     

    5,965.0

     

    4,929.6

     

    4,927.0

     

    5,294.3

     

    5,143.8

     

    4,344.8

     

    3,396.2

     

     

     

     

     

     

     

    4 years later

     

    5,924.8

     

    4,980.5

     

    4,857.5

     

    5,221.8

     

    5,336.0

     

    5,222.8

     

    4,365.1

     

     

     

     

     

     

     

     

     

    5 years later

     

    4,948.0

     

    4,911.8

     

    5,042.9

     

    5,165.8

     

    5,383.6

     

    5,244.3

     

     

     

     

     

     

     

     

     

     

     

    6 years later

     

    4,900.4

     

    5,069.3

     

    4,929.1

     

    5,197.2

     

    5,385.8

     

     

     

     

     

     

     

     

     

     

     

     

     

    7 years later

     

    5,028.9

     

    4,902.3

     

    4,936.5

     

    5,169.2

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    8 years later

     

    4,867.4

     

    4,910.2

     

    4,902.9

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    9 years later

     

    4,868.0

     

    4,881.2

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    10 years later

     

    4,836.4

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    IV. Cumulative net (deficiency)/ redundancy

     

    $

    (292.4

    )

    $

    (384.5

    )

    $

    325.6

     

    $

    (155.9

    )

    $

    237.5

     

    $

    (515.6

    )

    $

    (392.5

    )

    $

    (242.0

    )

    $

    (108.2

    )

    $

    (22.9

    )

     

    Percent (deficient)/redundant

     

    (6.4

    )%

    (8.6

    )%

    6.2

    %

    (3.1

    )%

    4.2

    %

    (10.9

    )%

    (9.9

    )%

    (7.7

    )%

    (4.1

    )%

    (1.0

    )%

     

    V. Reconciliation of net liability re-estimated as of the end of the latest re-estimation period (see I. above):

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Gross re-estimated liability

     

    8,926.8

     

    8,891.2

     

    9,385.1

     

    9,376.8

     

    9,560.0

     

    9,852.4

     

    8,918.1

     

    7,266.3

     

    6,269.1

     

    5,756.8

     

     

    Less: gross re-estimated reinsurance recoverable

     

    (4,090.4

    )

    (4,010.0

    )

    (4,482.2

    )

    (4,207.6

    )

    (4,174.2

    )

    (4,608.1

    )

    (4,553.0

    )

    (3,870.1

    )

    (3,503.6

    )

    (3,402.5

    )

     

    Net re-estimated liability

     

    $

    4,836.4

     

    $

    4,881.2

     

    $

    4,902.9

     

    $

    5,169.2

     

    $

    5,385.8

     

    $

    5,244.3

     

    $

    4,365.1

     

    $

    3,396.2

     

    $

    2,765.5

     

    $

    2,354.3

     

     

    VI. Cumulative gross (deficiency)/redundancy

     

    $

    (3,122.4

    )

    $

    (3,235.3

    )

    $

    (2,515.6

    )

    $

    (3,100.8

    )

    $

    (2,684.6

    )

    $

    (1,532.2

    )

    $

    (1,411.1

    )

    $

    (1,157.3

    )

    $

    (940.9

    )

    $

    (43.4

    )

     

    Percent (deficient)/redundant

     

    (53.8

    )%

    (57.2

    )%

    (36.6

    )%

    (49.4

    )%

    (39.0

    )%

    (18.4

    )%

    (18.8

    )%

    (18.9

    )%

    (17.7

    )%

    (.8

    )%

     


    amount of net losses and LAE paid relating to recorded liabilities as of the end of each succeeding year.

     
     OneBeacon Loss and LAE(1),(3)
    Years Ended December 31,

     
    ($ in millions)

     
     1994
     1995
     1996
     1997
     1998(2)
     1999
     2000
     2001
     2002
     2003
     2004
     
    I. Liability for unpaid losses and LAE: $5,535.4 $5,844.4 $5,804.4 $5,655.9 $6,944.0 $6,368.8 $6,982.7 $8,425.2 $7,630.5 $6,241.2 $5,475.5 
    Less: reins. recoverables on unpaid losses and LAE  (1,069.8) (1,307.4) (1,260.4) (1,159.2) (1,651.9) (1,285.6) (1,276.4) (3,609.7) (3,560.6) (2,984.0) (2,714.7)
      
     
     
     
     
     
     
     
     
     
     
     
    Net balance $4,465.6 $4,537.0 $4,544.0 $4,496.7 $5,292.1 $5,083.2 $5,706.3 $4,815.5 $4,069.9 $3,257.2 $2,760.8 
      
     
     
     
     
     
     
     
     
     
     
     
    II. Net liability re-estimated as of:                                  
     1 year later  4,494.1  4,584.7  4,627.8  5,370.1  5,305.3  5,901.2  4,815.8  4,872.9  4,216.7  3,357.4   
     2 years later  4,552.1  4,667.1  5,476.0  5,424.7  5,985.4  5,013.5  4,913.7  5,155.0  4,337.0       
     3 years later  4,642.8  5,460.6  5,549.0  5,965.0  5,002.8  5,001.5  5,384.7  5,244.0          
     4 years later  5,406.5  5,510.6  5,924.8  4,980.5  4,932.1  5,297.5  5,429.3             
     5 years later  5,431.8  5,779.5  4,948.0  4,911.8  5,117.6  5,243.4                
     6 years later  5,632.0  4,794.7  4,900.4  5,069.3  5,006.1                   
     7 years later  4,658.7  4,749.4  5,028.9  4,902.3                      
     8 years later  4,625.6  4,871.8  4,867.4                         
     9 years later  4,744.2  4,714.2                            
     10 years later  4,593.1                               
      
     
     
     
     
     
     
     
     
     
     
     
    III. Cumulative net (deficiency)/redundancy $(127.5)$(177.2)$(323.4)$(405.6)$286.0 $(160.2)$277.0 $(428.5)$(267.2)$(100.3)$ 
    Percent (deficient)/redundant  (2.9)% (3.9)% (7.1)% (9.0)% 5.4% (3.2)% 4.9% (8.9)% (6.6)% (3.1)% %
      
     
     
     
     
     
     
     
     
     
     
     
    IV. Reconciliation of net liability re-estimated as of the end of the latest re-estimation period (see II. above):                                  
    Gross re-estimated liability  5,559.2  5,893.0  5,996.2  5,898.5  6,574.0  6,545.8  6,730.0  8,830.6  7,878.1  6,331.6   
    Less: gross re-estimated reinsurance recoverable  (966.0) (1,178.8) (1,128.8) (996.2) (1,567.9) (1,302.4) (1,300.7) (3,586.6) (3,541.1) (2,974.2)  
      
     
     
     
     
     
     
     
     
     
     
     
    Net re-estimated liability $4,593.1 $4,714.2 $4,867.4 $4,902.3 $5,006.1 $5,243.4 $5,429.3 $5,244.0 $4,337.0 $3,357.4 $ 
      
     
     
     
     
     
     
     
     
     
     
     
    V. Cumulative net amount of liability paid through:                                  
     1 year later  1,390.1  1,476.6  1,591.9  1,687.3  1,815.2  1,966.5  2,007.9  1,892.0  1,656.7  1,463.7   
     2 years later  2,240.8  2,372.6  2,621.3  2,735.4  2,954.8  3,136.2  3,213.8  3,101.3  2,834.7       
     3 years later  2,821.9  3,083.3  3,331.1  3,518.0  3,709.2  3,882.3  4,057.3  4,040.5          
     4 years later  3,328.3  3,571.3  3,872.2  4,044.0  4,125.9  4,394.5  4,677.2             
     5 years later  3,672.7  3,961.5  4,233.4  4,282.8  4,421.0  4,736.0                
     6 years later  3,978.3  4,225.4  4,398.1  4,464.4  4,627.2                   
     7 years later  4,186.9  4,329.4  4,516.6  4,584.6                      
     8 years later  4,265.6  4,416.0  4,609.4                         
     9 years later  4,335.6  4,485.7                            
     10 years later  4,392.9                               
      
     
     
     
     
     
     
     
     
     
     
     

    (1)

    In 1998, Commercial General Union (“CGU”), the predecessor company to OneBeacon, was formed as a result of a pooling of interests between Commercial Union Corporation and General Accident.Accident Corporation of America. All historical balances have been restated as though the companies had been merged throughout the periods presented.

    (2)

    In 1998, OneBeaconCGU acquired Houston General Insurance Company and NFU. All(“HGIC”) in 1998. In 2005, OneBeacon contributed HGIC to Houston General Insurance Exchange. Even though no longer owned by OneBeacon, all liabilities related to these entities have beenthis entity continue to be shown from the acquisition date1998 forward in this table.

    table because GAAP continues to require it to be consolidated by OneBeacon.

    (3)

    This table reflects the effects of the NICO Cover and the GRC Cover as if they had been in effect for all periods presented.

    (4)OneBeacon became a wholly-owned subsidiary of White Mountains during 2001. Reserve development for the years ended 1995 through 2000 reflects development on reserves established before White Mountains consolidated OneBeacon’s results.

    (5)OneBeacon acquired NFU in 1998 and sold it during 2005. All liabilities related to this entity are shown from 1998 through 2004.


    The cumulative net (deficiency)/redundancy in the table above reflects reinsurance recoverables recorded in connection with the OneBeacon Acquisition under the NICO Cover and the GRC Cover. SeeNote 4, "Third4- “Third Party Reinsurance"Reinsurance” in the accompanying Consolidated Financial Statements for a description of the NICO Cover and the GRC Cover. These covers apply to losses incurred in 2000 and prior years. As a result, they have the effect of significantly increasing OneBeacon'sOneBeacon’s reinsurance recoverables in 2001 and 2002 and reducing its reserve deficiency for each of the years presented prior to the OneBeacon Acquisition by the amount of the reserves ceded at the time these covers were purchased. See "Asbestos and Environmental Reserves"Reserves” under "CRITICAL ACCOUNTING ESTIMATES"ESTIMATES” in"Management's“Management’s Discussion and Analysis of Financial Condition and Results of Operations"Operations” for a discussion of the impact of the NICO Cover on OneBeacon'sOneBeacon’s net loss and LAE reserve position. The table presented below represents OneBeacon's cumulative net deficiency without regard to the NICO Cover and the GRC Cover.

     
     Years Ended December 31,
     
    ($ in millions)

     
     1994
     1995
     1996
     1997
     1998
     1999
     2000
     2001
     2002
     2003
     2004
     
    Cumulative net deficiency adjusted for the NICO Cover and the GRC Cover $(1,831.1)$(1,906.6)$(2,076.5)$(2,194.9)$(1,560.9)$(2,092.3)$(1,788.0)$(428.5)$(267.2)$(100.3)$ 

    Percent deficient

     

     

    (41.0

    )%

     

    (42.0

    )%

     

    (45.7

    )%

     

    (48.8

    )%

     

    (29.5

    )%

     

    (41.2

    )%

     

    (31.3

    )%

     

    (8.9

    )%

     

    (6.6

    )%

     

    (3.1

    )%

     


    %
      
     
     
     
     
     
     
     
     
     
     
     

    The following table reconciles loss and LAE reserves determined on a Statutory basis to loss and LAE reserves determined in accordance with GAAP at December 31, as follows:


     December 31,
     

     

    December 31,

     

    ($ in millions)

     
    2004
     2003
     2002
     

    Millions

     

    2006

     

    2005

     

    2004

     

    Statutory reserves $4,413.4 $5,085.5 $6,029.0 

     

    $

    3,863.9

     

    $

    4,253.4

     

    $

    4,413.4

     

    Reinsurance recoverable on unpaid losses and LAE(1) 1,046.8 1,197.5 1,650.9 
    Reserves allocated from other segments 44.5   
    Other(2) (29.2) (41.8) (49.4)
     
     
     
     

    Reinsurance recoverable on unpaid losses and LAE(1)

     

    1,280.5

     

    1,455.2

     

    1,046.8

     

    Reserves allocated from other segments, net

     

     

    41.6

     

    44.5

     

    Purchase accounting

     

    (270.5

    )

    (317.5

    )

    (361.5

    )

    Other(2)

     

    (36.2

    )

    (36.8

    )

    (29.2

    )

    GAAP reserves $5,475.5 $6,241.2 $7,630.5 

     

    $

    4,837.7

     

    $5,395.9

     

    $5,114.0

     

     
     
     
     

    (1)

    Represents adjustments made to add back reinsurance recoverables included with the presentation of reserves under Statutory accounting.

    (2)

    Primarily represents long-term workers compensation loss and LAE reserve discount recorded of $36.1$36.2 million, $38.0$36.8 million and $42.2 $36.1 million in 2004, 20032006, 2005 and 20022004 in excess of statutorily defined discount.

    OneBeacon’s Intermediate Holding Companies

    OneBeacon’s intermediate holding companies include Fund American Enterprises Holdings, Inc. (“FAEH”) and Fund American Companies, Inc. (“Fund American”), both U.S.-domiciled companies, as well as various intermediate holding companies domiciled in the United States, Gibraltar, Luxembourg and Bermuda.

    In May 2003, Fund American issued $700 million face value of senior unsecured debt through a public offering, at an issue price of 99.7% (the “Senior Notes”). The Senior Notes bear an annual interest rate of 5.9% until maturity in May 2013. Pursuant to the offering of the Senior Notes, White Mountains fully and unconditionally guaranteed the payment of principal and interest on the Senior Notes. Following the OneBeacon Offering, White Mountains continues to guarantee the payment of principal and interest on the Senior Notes. OneBeacon Ltd. pays White Mountains a guarantee fee equal to 25 basis points per annum on the outstanding principal amount of the Senior Notes. If White Mountains’ voting interest in OneBeacon Ltd.’s common shares ceases to represent more than 50% of all their voting securities, OneBeacon Ltd. will seek to redeem, exchange or otherwise modify the senior notes in order to fully and permanently eliminate White Mountains’ obligations under its guarantee. In the event that White Mountains’ guarantee is not eliminated, the guarantee fee will increase over time up to a maximum of 450 basis points.

    As part of the financing for the OneBeacon Acquisition, Berkshire Hathaway Inc. (“Berkshire”) invested a total of $300 million in cash, of which (1) $225 million was for the purchase of cumulative non-voting preferred stock of Fund American (the “Berkshire Preferred Stock”), which has a $300 million redemption value; and (2) $75 million was for the purchase of warrants to acquire 1,724,200 common shares of the Company. The Berkshire Preferred Stock is entitled to a dividend of no less than 2.35% per quarter and is mandatorily redeemable on May 31, 2008. During 2004, Berkshire exercised its warrants for $294 million in cash.

    Also as part of the financing of the OneBeacon Acquisition, Zenith Insurance Company (“Zenith”) purchased $20 million in cumulative non-voting preferred stock of FAEH (the “Zenith Preferred Stock”). The Zenith Preferred Stock is entitled to a dividend of no less than a 2.5% per quarter through June 30, 2007 and a dividend of no less than 3.5% per quarter thereafter. The Zenith Preferred Stock is mandatorily redeemable on May 31, 2011. At White Mountains’ option, which it expects to exercise, the Zenith Preferred Stock may be redeemed on June 30, 2007.

    In connection with the OneBeacon Offering, Fund American and FAEH each established an irrevocable grantor trust to economically defease the Berkshire Preferred Stock and the Zenith Preferred Stock. The assets of each trust are solely dedicated to the satisfaction of the payment of dividends and redemption amounts on the $300 million


    liquidation preference of the Berkshire Preferred Stock and the $20 million liquidation preference of the Zenith Preferred Stock. Concurrently with the closing of the OneBeacon Offering, Fund American and FAEH funded their respective trust with cash that was used to purchase a portfolio of fixed maturity securities issued by the U.S. government or government-sponsored enterprises. The scheduled interest and principal payments of the portfolio of fixed maturity securities in each trust is sufficient to pay when due all amounts required under the terms of the Berkshire Preferred Stock and the Zenith Preferred Stock, including the mandatory redemption of the Berkshire Preferred Stock in May 2008 and the optional redemption of the Zenith Preferred Stock in June 2007.

    In connection with the OneBeacon Offering, Fund American established a $75 million revolving credit facility that matures in November 2011 (the “FAC Bank Facility”). As of December 31, 2006, the FAC Bank Facility was undrawn.

    WHITE MOUNTAINS RE

            During 2004, White Mountains formed White Mountains Re is a global multi-line reinsurance organization that provides reinsurance for property, liability, accident & health, aviation and certain marine exposures on a worldwide basis through its subsidiaries, Folksamerica Re and Sirius International. Folksamerica Re is a multi-line property and casualty reinsurer that provides reinsurance primarily in the United States, Canada, Continental Europe, Latin America, the Caribbean and Japan. Sirius International, which combinedis the largest reinsurance company domiciled in Scandinavia based on gross written premiums, is a multi-line property and casualty reinsurer that provides reinsurance primarily in Europe, North America and Asia.

    WMRUS provides reinsurance underwriting advice and reinsurance portfolio analysis services to Sirius, Folksamerica, Fund AmericanOlympus Reinsurance Company Ltd. ("Fund American Re"(“Olympus”) and WMU with the newly acquired Sirius to form a cohesive, global reinsurance organization.

    Helicon Reinsurance Company, Ltd. (“Helicon”). As White Mountains Re offers lead capacityRe’s “center of excellence” for reinsurance on most property accident & healthcatastrophe risk evaluation, its goal is to promote increased efficiencies, consistency in pricing and liabilityunderwriting methodology, centralized management of catastrophe exposures and writes direct program insuranceadvanced catastrophe modeling, as well as value-added services for intermediaries and clients. In exchange for these services, WMRUS receives fee income on the business through Sirius America. White Mountains Re also provides reinsurance advisory services through WMU, specializing in international property and marine excess reinsurance. it refers.

    White Mountains Re has offices in Belgium, Bermuda, Chicago, Connecticut, Dublin, Hamburg, London, Miami, New York, Singapore, Stockholm, Toronto and Zurich.

    At December 31, 20042006 and 2003,2005, White Mountains Re had $8.2$7.3 billion and $3.7$8.5 billion of total assets and $1.7$2.1 billion and $1.0$1.9 billion of shareholder'sshareholder’s equity, respectively.


            Folksamerica, which became a wholly-owned subsidiary of White Mountains in 1998, is a multi-line property and casualty reinsurer that provides reinsurance to insurers primarily in the United States, Canada, Continental Europe, Latin America, the Caribbean and Japan. Folksamerica Re is rated "A"“A-” (Excellent, the fourth highest of fifteen ratings) by A.M. Best and “A-” (Strong, the seventh highest of twenty-one ratings) by Standard & Poor’s. Sirius International is rated “A” (Excellent, the third highest of fifteen ratings) by A.M. Best.Best and “A-” (Strong, the seventh highest of twenty-one ratings) by Standard & Poor’s.

            On April 16, 2004, White Mountains Re has completed several significant transactions involving interests in other insurance and reinsurance organizations. In most cases the transactions were acquisitions of entities that were owned by organizations that no longer considered them core businesses. Since 2000, White Mountains Re has completed the following significant transactions in addition to the Sirius Acquisition,Acquisition:

    ·        On December 22, 2006, White Mountains Re acquired Mutual Service Casualty Insurance Company (“Mutual Service”), a Minnesota-domiciled, runoff insurer for $34 million in cash. Mutual Service has been renamed Stockbridge Insurance Company (“Stockbridge”) as part of a sponsored demutualization and conversion to a stock company and was formerly affiliated with Illinois-based Country Insurance & Financial Services (“Country”). As part of the transaction, Country has provided Stockbridge with approximately $25 million of reinsurance protection in excess of Stockbridge’s carried reserves as of September 30, 2006. White Mountains Re did not acquire any infrastructure or employees and is managing Stockbridge’s run-off administration through which the principal operating companiesuse of a TPA under White Mountains Re’s direction.

    ·        On August 2, 2006, White Mountains Re sold Sirius America to an investor group led by Lightyear Capital for $139 million in cash. As part of the transaction, White Mountains acquired werean equity interest of approximately 18% in the acquiring entity and accounts for its remaining interest in Sirius America on the equity method within its Other Operations segment.

    ·On November 11, 2004, Sirius International andacquired Denmark-based Tryg-Baltica Forsikring, internationalt forsikringsselskab A/S (“Tryg-Baltica”). Following the closing, White Mountains Re placed Tryg-Baltica into run-off, with select business renewed by Sirius America. Stockholm-based Sirius International is a multi-line property and casualty reinsurer that provides reinsurance primarily in Europe, North America and AsiaInternational. White Mountains Re did not acquire any infrastructure or employees and is managing the largest reinsurance company domiciled in Scandinavia (based on gross written premiums)company’s run-off administration.


    ·        On March 31, 2004, Folksamerica acquired the Sierra Insurance Group companies (the “Sierra Group”). Sirius America is a U.S.-based insurer that specializes in primary insurance programs. Sirius InternationalSubsequent to the acquisition, the Sierra Group companies, which previously wrote mainly workers compensation business, were placed into run-off and Sirius America are both rated "A" (Excellent,all of the third highest of fifteen ratings) by A.M. Best.acquired companies’ run-off claims administration was transferred to TPAs working under White Mountains Re’s direction.

    ·        Effective October 1, 2003, White Mountains Re acquired renewal rights to the property and casualty treaty reinsurance business of CNA Reinsurance ("(“CNA Re"Re”), a division of CNA Financial Corporation (the "CNA“CNA Re Agreement"Agreement”). Under the terms of the CNA Re Agreement, White Mountains Re payspaid CNA Re a renewal commission on the premiums renewed over the two contract renewal periods subsequent to October 1, 2003. The renewal commission is 3% for the initial renewal and 2% for the second renewal.

            In December 2001, White Mountains formed WMU, a reinsurance advisory company domiciled in Ireland. As part of a corporate reorganization, WMU established a sister company in Bermuda in June 2003. WMU provides reinsurance underwriting advice and reinsurance portfolio analysis services to both Folksamerica and Olympus Reinsurance Company Ltd. ("Olympus"). Prior to the Sirius Acquisition, WMU's Irish company, a specialist in handling non-marine property treaty excess of loss classes, expanded White Mountains Re's international profile, particularly in the United Kingdom, Continental Europe, Japan and Australia. WMU's Bermuda company specializes in excess reinsurance coverages for the marine and energy sector.

            Since 1999, in addition to the transactions discussed above, White Mountains Re has made the following acquisitions:

      On November 11, 2004, Sirius International acquired 100% of Denmark-based Tryg-Baltica Forsikring, internationalt forsikringsselskab A/S ("Tryg Baltica"). Following the closing, White Mountains Re placed Tryg Baltica into runoff, though it is anticipated that select business will be renewed by Sirius International. White Mountains Re did not acquire any infrastructure or employees and will manage the company's runoff administration.

      On March 31, 2004, Folksamerica acquired 100% of the Sierra Insurance Group companies (the "Sierra Group"). Subsequent to the acquisition, the Sierra Group companies, which previously wrote mainly workers compensation business, were placed into runoff and all of the acquired companies' runoff claims administration was transferred to TPAs working under White Mountains Re's direction.

      ·In 2002, Folksamerica acquired 100% of Imperial Casualty and Indemnity Insurance Company, ("Imperial"), a company in run-off.

      ·In 2001, Fund AmericanWhite Mountains Re acquired substantially all of the international reinsurance operations of Folksam International Insurance Company and Folksamerica acquired 100% of C-F Insurance Company, ("C-F"), a company in run-off.

      ·In 2000, Folksamerica acquired substantially all the reinsurance operations of Risk Capital Reinsurance Company ("(“Risk Capital"Capital”) and 100% of PCA Property & Casualty Insurance Company ("PCA"(“PCA”), a company in run-off.

      In 1999, Folksamerica acquired 100% of USF Re Insurance Co. ("USF Re").


      Reinsurance Overview

      Reinsurance is an arrangement in which a reinsurance company (the "reinsurer"“reinsurer”) agrees to indemnify an insurance company (the "ceding company"“ceding company”) for all or a portion of the insurance risks underwritten by the ceding company under one or more insurance policies. Reinsurance can benefit a ceding company in a number of ways, including reducing exposure on individual risks, providing catastrophe protections from large or multiple losses, and assisting in maintaining acceptable capital levels as well as financial and operating leverage ratios. Reinsurance can also provide a ceding company with additional underwriting capacity by permitting it to accept larger risks and underwrite a greater number of risks without a correspondingcommensurate increase in its capital or surplus. Reinsurers may also purchase reinsurance, known as retrocessional reinsurance, to cover their own risks assumed from primary ceding companies. Reinsurance companies often enter into retrocessional agreements for many of the same reasons that ceding companies enter into reinsurance agreements.

      Reinsurance is generally written on a treaty or facultative basis. Treaty reinsurance is an agreement whereby the reinsurer assumes a specified portion or category of risk under all qualifying policies issued by the ceding company during the term of the agreement, usually one year. In theWhen underwriting of treaty reinsurance, the reinsurer does not evaluate each individual risk and generally accepts the original underwriting decisions made by the ceding insurer.company. Treaty reinsurance is typically written on either a quota share or excess of loss basis. A quota share reinsurance treaty is an arrangement whereby a reinsurer assumes a predetermined proportional share of the premiums and losses generated on specified business. An excess of loss treaty is an arrangement whereby a reinsurer assumes losses that exceed an agreeda specific retention of loss by the ceding company. Facultative reinsurance, on the other hand, is underwritten on a risk-by-risk basis, which allows the reinsurer to determine pricing for each exposure.

      A significant period of time normally elapses between the receipt of reinsurance premiums and the payment of reinsurance claims. While premiums are generally paid to the reinsurer upon inception of coverage, the claims process is delayed and generally begins upon the occurrence of an event causing an insured loss followed by: (1) the reporting of the loss by the insured to the ceding company; (2) the reporting of the loss by the ceding company to the reinsurer; (3) the ceding company'scompany’s adjustment and payment of the loss; and (4) the payment to the ceding company by the reinsurer. During this time, reinsurance companiesreinsurers generate investment income on premium receipts, consisting primarily of interest earned on fixed maturity investments and dividends earned on equity securities. The period of time between the receipt of premiums and the payment of claims is typically longer for a reinsurer than for a primary insurer. This delay is less significant for companies that write large volumes of short-tailed coverage, such as property.



      Classes of Business

      White Mountains Re writes three main classes of reinsurance: property, liability property and accident and health.specialty. White Mountains Re'sRe’s net written premiums by class of business for the years ended December 31, 2004, 20032006, 2005 and 20022004 were as follows:

       
       Year Ended December 31,
      Business class
      (Millions)

       2004
       2003
       2002
      Liability $524.5 $450.7 $344.2
      Property  432.1  314.6  252.2
      Accident and Health  151.6  88.4  68.1
      Other  138.1  32.0  23.7
        
       
       
       Total $1,246.3 $885.7 $688.2
        
       
       

       White Mountains Re writes both treaty

      Business class

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Property

       

      $

      572.6

       

      $

      567.4

       

      $

      432.1

       

      Liability

       

      293.1

       

      403.4

       

      524.5

       

      Specialty(1)

       

      424.2

       

      333.3

       

      289.7

       

      Total

       

      $

      1,289.9

       

      $

      1,304.1

       

      $

      1,246.3

       


      (1)             Includes primarily accident & health, marine and facultative reinsurance, as well as directaviation business.

      The majority of White Mountains Re'sRe’s premiums are derived from treaty reinsurance contracts both on a quota share and an excess of loss basis, which in 20042006 amounted to 55%47% and 34%38%, respectively, of its total net written premiums, while directprimary business represented 11%15% of total net written premium.

      During the years ended December 31,December31, 2006, 2005 and 2004, 2003 and 2002, White Mountains Re received no more than 10% of its gross reinsurance premiums from any individual ceding company. During the years ended December 31, 2004, 20032006, 2005 and 2002,2004, White Mountains Re received approximately 51%52%, 58%40% and 57%51%, respectively, of its gross reinsurance written premiums from three major, third-party reinsurance brokersintermediaries as follows: (1) AON Re—22%Re — 24%, 25%18% and 28%22%, respectively; (2) Benfield—Benfield — 16%, 19%14% and 14%16%, respectively; and (3) Guy Carpenter—13%Carpenter — 12%, 14%8% and 15%13%, respectively.


      Geographic Concentration

      White Mountains Re'sRe’s net written premiums by geographic region for the years ended December 31, 2004, 20032006, 2005 and 20022004 were as follows:

       
       Year Ended December 31,
      Geographic region
      (Millions)

       2004
       2003
       2002
      United States $846.7 $702.5 $529.8
      Europe  303.5  114.0  88.0
      Canada, the Caribbean and Latin America  42.4  53.6  58.8
      Asia and Other  53.7  15.6  11.6
        
       
       
       Total $1,246.3 $885.7 $688.2
        
       
       


      Marketing

      Geographic region

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      United States

       

      $

      864.7

       

      $

      878.9

       

      $

      846.7

       

      Europe

       

      314.4

       

      315.6

       

      303.5

       

      Canada, the Caribbean and Latin America

       

      37.8

       

      47.2

       

      42.4

       

      Asia and Other

       

      73.0

       

      62.4

       

      53.7

       

      Total

       

      $

      1,289.9

       

      $

      1,304.1

       

      $

      1,246.3

       

      Marketing

      White Mountains Re, which conducts its reinsurance business through Folksamerica Re and Sirius International, obtains most of its reinsurance business from reinsurance brokers.intermediaries. Business submissions come from intermediaries that represent the ceding company or through submissions recommended by WMU. White Mountains Re considers both the intermediary and the ceding company to be its clients in any placement. White Mountains Re has developed strong business relationships over a long period of time with the management of many of its ceding companies.WMRUS. The process of placing an intermediary reinsurance program typically begins when a ceding company enlists the aid of a reinsurance intermediary in structuring a reinsurance program. Often theThe ceding company and the brokerintermediary will often consult with one or more lead reinsurers as to the pricing and contract terms for the reinsurance protection being sought. Once the ceding company has approved the terms quoted by the lead reinsurer, the brokerintermediary will offer participation to qualified reinsurers until the program is fully subscribed. White Mountains Re considers both the intermediary and the ceding company to be its clients in any placement and as such has developed strong business relationships over a long period of time with the management of many of its ceding companies.


      White Mountains Re pays ceding companies a ceding commission under most quota share reinsurance treaties and some excess of loss reinsurance treaties. The ceding commission is generally based on the ceding company'scompany’s cost of acquiring and administering the business being reinsured (commissions,(e.g., commissions, premium taxes and certain miscellaneous expenses). Additionally, White Mountains Re pays reinsurance intermediaries commissions based on negotiated percentages of the premium they produce. The reinsurance intermediary'sintermediaries’ commissions constitute a significant portion of White Mountains Re'sRe’s total acquisition costs.

              As mentioned above, Underwriting and Pricing

      White Mountains Re also writes direct program business through Sirius America, which began its program insurance operations in 1999. Sirius America works with managing general agents to produce U.S. based liability, property and accident & health insurance programs for small and mid-sized commercial accounts. Sirius America establishes strict underwriting guidelines,



      closely monitors all exposures and performs periodic on-site audits of the managing general agents to confirm compliance with established guidelines and procedures.


      Underwriting and Pricing

              White Mountains Re derives its business from a broad spectrum of ceding insurers including national, regional, specialty and excess and surplus lines writers, both in the United States and internationally. White Mountains Re determines which risks it accepts based on the anticipated underwriting results of the transaction, which are evaluated on a variety of factors including types of risk, the quality of the reinsured, the attractiveness of the reinsured's insurance rates and policy conditions and the adequacy of the proposed reinsurance terms.

              White Mountains Re's underwriters and pricing actuaries perform reviews of the underwriting, pricing, and general underwriting controls of potential clients before quoting contract terms for its reinsurance products. White Mountains Re prices its products by assessing the desired return on the expected capital needed to write a given contract and by estimating future loss and LAE costs. White Mountains Re accepts contracts that are anticipated to generate expected returns on capital and an underwriting profit. White Mountains Re's pricing indications are based on a number of underwriting factors including historical results, analysis of exposure and estimates of future loss costs, a review of other programs displaying similar exposure characteristics, the primary insurer's underwriting and claims experience and the primary insurer's financial condition. Folksamerica's underwriters and claims personnel perform regular audits on certain classes of business to monitor the ceding company's pricing and claim handling discipline. Sirius International's underwriters frequently communicate with ceding companies to discuss current terms and conditions. Additionally, White Mountains Re's finance staff reviews the financial stability and creditworthiness of certain ceding companies. Such reviews provide important input to support underwriting decisions.

              White Mountains Re and other reinsurance companies have sought to mitigate the risk associated with future terrorist attacks in a similar manner as primary insurers. Since the Attacks, reinsurers have attained significant price increases across all lines of reinsurance in response to greater perceived policy exposures. Reinsurers do not have the stringent regulations with respect to contract terms and policy exclusions which are generally imposed on primary writers. For example, the Terrorism Act is not applicable to reinsurers. As a result, exclusions are more often dictated by the marketplace than by regulation. White Mountains Re evaluates terrorism exposure to its ceding company clients and applies exclusions as appropriate. For example, reinsurance written on commercial risks subsequent to the Attacks generally contain clauses that exclude certified acts of terrorism. Reinsurance on personal risks written subsequent to the Attacks generally contain exclusions related to nuclear, biological and chemical attacks.


      Claims Management

              White Mountains Re maintains a staff of experienced reinsurance claim specialists that work closely with reinsurance intermediaries to obtain specific claims information from its customers. Folksamerica's claims staff also regularly perform on site claim reviews to assess and suggest improvements regarding the reinsured's claim handling ability and reserving techniques. In addition, all of White Mountains Re's claims specialists review loss information provided by the reinsured for adequacy. The results of these claim reviews are shared with the actuaries and underwriters to ensure that they are making the correct assumptions in pricing products and that all relevant information is used in establishing loss reserves.

              White Mountains Re also uses TPAs for certain other claims, including the direct program business written by Sirius America and run-off claims related to the Sierra and PCA acquisitions. White


      Mountains Re's claims staff performs on-site claim audits of certain TPAs to ensure the propriety of the controls and processes over claims serviced by the TPA.


      Competition

              In general, White Mountains Re competes for reinsurance business with other major global reinsurers, local reinsurers in certain markets and reinsurance divisions of direct insurance companies. Competition in the worldwide reinsurance market is influenced by a variety of factors, including financial strength ratings, prior history and relationships, as well as expertise and the speed at which the company has historically paid claims.

              Through Folksamerica, White Mountains Re competes with all of the larger U.S. reinsurance companies. As reported by the Reinsurance Association of America ("RAA") for the nine month period ending September 30, 2004, (the most recent data available), Folksamerica wrote approximately 6% of gross written premiums of all reinsurance companies that are viewed as direct competition. The reinsurance companies writing the largest portion of gross premiums in this period were: XL Reinsurance America (18%), Transatlantic Reinsurance Company (16%) and Everest Reinsurance Company (15%).

              Through Sirius International, the largest reinsurance company domiciled in Scandinavia (based upon gross written premiums), White Mountains Re competes with many of the larger European and international reinsurance companies, including Munich Re, Swiss Re, Hannover Re, Lloyds, Partner Re and Everest Re.

              White Mountains Re, through its operating subsidiaries, has a long history of close relationships with ceding companies and maintainsmaintaining a disciplined underwriting strategy which, among other things,while considering overall exposure, focuses on writing more business when market terms and conditions are favorable and reducing business volume during soft markets when terms and conditions become less favorable. White Mountains Re also employs a multi-line approach, offering clients a wide range of reinsurance products to satisfy their risk management needs.

      White Mountains Re derives its business from a broad spectrum of ceding companies, including national, regional, specialty and excess and surplus lines writers, both in the United States and internationally. White Mountains Re’s underwriters and pricing actuaries perform reviews of the underwriting, pricing, and general underwriting controls of potential ceding companies before quoting contract terms for its reinsurance products. White Mountains Re prices its products by assessing the desired return on the expected capital needed to write a given contract and on the expected underwriting results of the contract. White Mountains Re’s pricing indications are based on a number of underwriting factors including historical results, analysis of exposure and estimates of future loss costs, a review of other programs displaying similar exposure characteristics and the ceding company’s underwriting and claims experience. White Mountains Re’s underwriters, actuaries and claims personnel perform audits to monitor certain ceding companies’ risk selection, pricing and claim handling discipline. Additionally, White Mountains Re's acquisition strategy has contributedRe’s finance staff reviews the financial stability and creditworthiness of certain ceding companies. Such reviews provide important input to its growth. Since 1995, support underwriting decisions.

      White Mountains Re and other reinsurance companies have sought to mitigate the risks associated with future terrorist attacks in a similar manner as primary insurers. Reinsurers do not have the stringent regulations with respect to contract terms and policy exclusions that are generally imposed on primary insurers. For example, the Terrorism Act is not applicable to reinsurers. As a result, terrorism exclusions on reinsurance contracts are dictated by the marketplace. White Mountains Re evaluates terrorism exposure from its ceding companies and applies exclusions as it deems appropriate. Reinsurance on commercial risks written by White Mountains Re subsequent to the Attacks generally contains clauses that exclude acts of terrorism certified under the Terrorism Act. Reinsurance on personal risks written by White Mountains Re subsequent to the Attacks generally contains exclusions related to nuclear, biological and chemical attacks.

      Following the 2004 and 2005 catastrophe activity, White Mountains Re enhanced its catastrophe underwriting process by significantly raising its provision for demand surge (i.e., the rise in costs from shortages of material and labor in regions affected by a catastrophe) and by employing a more conservative methodology to evaluate exposure than those that result from standard actuarial and modeling techniques. Additionally, Folksamerica Re non-renewed its excess off-shore energy and marine business in the Gulf of Mexico effective January 1, 2006.

      Claims Management

      White Mountains Re maintains a staff of experienced reinsurance claim specialists that work closely with reinsurance intermediaries to obtain specific claims information from its customers. White Mountains Re’s claims staff also regularly perform on-site claim reviews to assess certain reinsured’s claim handling ability and reserving techniques. In addition, White Mountains Re’s claims specialists review loss information provided by the reinsured for adequacy. The results of these claim reviews are shared with the underwriters and actuaries to assist them in pricing products and establishing loss reserves.

      White Mountains Re also uses TPAs for certain other claims, including run-off claims related to certain acquisitions. White Mountains Re’s claims staff performs on-site claim audits of certain TPAs to ensure the propriety of the controls and processes over claims serviced by the TPA.


      Competition

      The worldwide reinsurance market is highly competitive. Competition in the types of reinsurance that White Mountains Re underwrites is influenced by a variety of factors, including price and other terms and conditions offered, financial strength ratings, prior history and relationships, as well as expertise and the speed at which the company has completed ten acquisitionshistorically paid claims.

      White Mountains Re competes for reinsurance business in the United States, Bermuda, Europe, and other international reinsurance markets with numerous global competitors. White Mountains Re’s competitors include reinsurance companies, and underwriting syndicates at Lloyd’s. Some of other insurancethe companies that White Mountains Re competes directly with include ACE Limited, Arch Capital Group Ltd., Endurance Specialty Holdings Ltd., Everest Re Group, Ltd., Hannover Ruckversicherung AG, Lloyd’s of London, Munich Re Group, Partner Re Ltd., Platinum Underwriters Holdings Ltd., Renaissance Re Holdings Ltd., Swiss Re Group, Transatlantic Holdings, Inc. and reinsurance organizations. In virtually all cases the acquired entities were fundamentally sound, but were owned by organizations that no longer considered them core businesses.XL Capital Ltd.


      Catastrophe Risk Management
      Reinsurance Protection

      White Mountains Re has exposure to losses caused by hurricanes, earthquakes, winter storms, windstorms, terrorist acts and other catastrophic events. In the normal course of business, White Mountains Re seeks to reduce the risk of loss that may arise from catastrophes or other events that cause unfavorable underwriting results by reinsuring certain levels of risk in various areas of exposure with other insurance and reinsurance enterprises and by closely monitoring aggregate property exposures and related PMLs. To manage and analyze aggregate exposures and PML, White Mountains Re utilizes a variety of tools and analyses, including catastrophe modeling software packages. White Mountains Re regularly assessesmanages its concentration of underwriting exposures in catastrophe prone areas and develops strategies to manage this exposure,catastrophic events, primarily throughby limiting accumulationconcentrations of exposure to what it deems acceptable levels and, if deemed necessary, purchasing reinsurance. In addition, White Mountains Re seeks terrorism exclusions in its reinsurance contracts, where applicable. White Mountains Re also uses third party global catastrophe models that calculate its expected probable maximum loss (“PML”) from several possible catastrophes. White Mountains Re believes that its largest natural catastrophe exposures, net of reinsurance and based on a 250-year PML single event scenario, are European winter storm, California earthquake, United States Atlantic Coast windstorm (i.e., Delaware to Florida) and United States Gulf Coast windstorm (i.e., Florida to Texas).

      White Mountains Re’s catastrophe pricing models are based on third party software models and internally developed models. White Mountains Re models and assesses each property contract it writes for catastrophe exposure.

      Catastrophe exposure modeling is inherently uncertain due to process risk (the probability and magnitude of the purchaseunderlying event, e.g. earthquake) and parameter risk (the probability of making inaccurate modeling assumptions). In particular, geographic and policy coverage data on the primary policies reinsured by White Mountains Re is essential. Accordingly, White Mountains Re’s ability to accurately predict its catastrophe exposure is dependent on the quality and accuracy of data obtained from its clients.

      Additionally, catastrophe modeling is dependent upon several broad economic and scientific assumptions, such as storm surge (i.e., the water that is pushed toward the shore by the force of a windstorm), demand surge and zone density (i.e., the percentage of insured perils that would be affected in a region by a catastrophe).

      While catastrophe models can be effective tools in assisting with the pricing and managing of property catastrophe exposures, White Mountains Re does not believe that they can be strictly relied upon to measure its exposure to catastrophic risk.  For example, losses arising from Hurricane Katrina for both the industry and White Mountains Re were substantially in excess of losses previously predicted by third party models from such an event, due to issues such as inadequate storm surge and demand surge assumptions in the models as well as flood due to the levees breaking, which was not fully contemplated in these models. Correspondingly, White Mountains Re assesses catastrophe risk by monitoring total limits exposed to a catastrophe event in key zones.  White Mountains Re has enhanced its operations in Bermuda to advise the group in the underwriting, pricing and managing of catastrophe reinsurance.risks assumed.

              Folksamerica's primaryReinsurance Protection

      White Mountains Re’s reinsurance protection is provided through Folksamerica Re’s quota share retrocessional arrangements with Olympus.Olympus and Helicon and through excess of loss protection purchased by Sirius to cover Sirius’ property catastrophe and aviation exposures. These arrangementsreinsurance protections are designed to increase Folksamerica'sWhite Mountains Re’s underwriting capacity, to capitalize on the improved pricing trends that accelerated after the Attackswhere appropriate, and to reduce its potential loss exposure to any large or series of smaller property catastrophe events.

      20




      Under White Mountains Re’s 2006 arrangements with Olympus and Helicon, Folksamerica Re ceded 35% of its quota share agreements2006 underwriting year short-tailed excess of loss business, mainly property and marine. Olympus and Helicon shared approximately 56% and 44%, respectively, in the 2006 underwriting year cession. Under White Mountains Re’s 2005 arrangements with Olympus, Folksamerica cedesRe ceded up to 75% of substantially all of its 2005 underwriting year short-tailed excess of loss business, mainly property and marine, and 50% of its 2005 underwriting year proportional property business to Olympus and receives an override commission on the premiums ceded to Olympus.



              Under its prior ownership, Sirius' threshold for risk exposure and earnings volatility was extremely low. As a consequence, Sirius purchased many reinsurance protections at significant costs. These protections were purchased primarily to reduce the company's property catastrophe exposure on both a treaty and facultative basis. Under White Mountains Re's ownership, Sirius' reinsurance purchasing is coordinated with that of Folksamerica on a group-wide basis. Selective purchases are made primarily for property catastrophe protection. Effective April 1, 2004, Sirius International entered into a quota share reinsurance agreement with Olympus. Under this agreement, Sirius International cedesceded 25% of its 2005 underwriting year short-tailed proportional and excess of loss business to Olympus.business. White Mountains Re receives an override commissionreceived fee income based on the premiums ceded to Olympus.Olympus and Helicon. During 2007, Folksamerica Re will continue to cede 35% of its 2007 underwriting year short-tailed excess of loss business, mainly property and marine, with Olympus and Helicon sharing approximately 55% and 45%, respectively, in 2007.

      White Mountains Re is also entitled to receive a profit commission with respect to the profitability of the business placed with Olympus and Helicon. However, this profit commission arrangement is subject to a deficit carryforward whereby net underwriting losses from one year carryover to future years. As a result of hurricanes Katrina, Rita and Wilma and several other significant loss events during 2005, Olympus recorded substantial net underwriting losses. Accordingly, White Mountains Re did not record a profit commission from Olympus or Helicon during 2006 or 2005 and does not expect to record profit commissions from Olympus or Helicon for the foreseeable future.

      Reinsurance contracts do not relieve White Mountains Re of its obligation to its ceding companies. Therefore, collectibility of balances due from its retrocessional reinsurers is critical to White Mountains Re'sRe’s financial strength. SeeNote 4—"Third4 - “Third Party Reinsurance"Reinsurance” to the accompanying Consolidated Financial Statements for a discussion of White Mountains Re'sRe’s top reinsurers.


      Loss and Loss Adjustment Expense Reserves

      White Mountains Re establishes reserves that are estimates of future amounts needed to pay claims and related expenses for insured events that have already occurred. See "CRITICAL ACCOUNTING ESTIMATES"ESTIMATES” in"Management's“Management’s Discussion and Analysis of Financial Condition and Results of Operations"Operations” for a full discussion regarding White Mountains Re'sRe’s loss reserving process.

      The following information presents (1) White Mountains Re'sRe’s reserve development over the preceding ten years and (2) a reconciliation of reserves on a regulatory basis to reserves determined in accordance with GAAP, each as prescribed by Securities Act Industry Guide No. 6.

      Section I of the ten10 year table shows the estimated liability that was recorded at the end of each of the indicated years for all current and prior accident year unpaid lossesloss and LAE. The liability represents the estimated amount of lossesloss and LAE for claims that were unpaid at the balance sheet date, including IBNR reserves. In accordance with GAAP, the liability for unpaid lossesloss and LAE is recorded in the balance sheet gross of the effects of reinsurance with an estimate of reinsurance recoverables arising from reinsurance contracts reported separately as an asset. The net balance represents the estimated amount of unpaid lossesloss and LAE outstanding as of the balance sheet date, reduced by estimates of amounts recoverable under reinsurance contracts.

      Section II shows the cumulative amount of net loss and LAE paid relating to recorded liabilities as of the end of each succeeding year. Section III shows the re-estimated amount of the previously recorded net liability as of the end of each succeeding year. Estimates of the liability for unpaid lossesloss and LAE are increased or decreased as payments are made and more information regarding individual claims and trends, such as overall frequency and severity patterns, becomes known. Section IIIIV shows the cumulative net (deficiency)/redundancy representing the aggregate change in the liability from original balance sheet dates and the re-estimated liability through December 31, 2006. Section V shows the re-estimated gross liability and re-estimated reinsurance recoverables through December 31, 2006. Section VI shows the cumulative gross (deficiency)/redundancy representing the aggregate change in the liability from original balance sheet dates and the re-estimated liability through December 31, 2004. Section IV shows the re-estimated gross liability and re-estimated reinsurance recoverables through December 31, 2004. Section V shows the cumulative amount of net losses and LAE paid relating to recorded liabilities as of the end of each succeeding year.2006.


        ��     The following table includes the complete loss development history for all periods presented for all companies acquired by White Mountains Re as if the companies had been combined from their inception.


      This table includes development on reserves reported by acquired companies before those companies were acquired by White Mountains Re

       
       White Mountains Re Loss and LAE(1),(2),(3)(4)
      Years Ended December 31,

       
      ($ in millions)

       
       1994
       1995
       1996
       1997
       1998
       1999
       2000
       2001
       2002
       2003
       2004
       
      I.    Liability for unpaid losses and LAE:                                  
       Gross balance $1,642.7 $1,895.7 $2,448.2 $2,386.1 $2,524.2 $2,299.6 $3,175.1 $3,917.3 $3,925.1 $3,910.4 $4,170.3 
       Less: reins. recoverables on unpaid losses and LAE  (299.2) (336.6) (524.7) (513.3) (592.9) (651.0) (1,148.5) (1,353.7) (1,277.6) (1,214.6) (1,346.6)
        
       
       
       
       
       
       
       
       
       
       
       
      Net balance $1,343.5 $1,559.1 $1,923.5 $1,872.8  1,931.3 $1,648.6 $2,026.6 $2,563.6 $2,647.5 $2,695.8 $2,823.7 
        
       
       
       
       
       
       
       
       
       
       
       
      II.    Net liability re-estimated as of:                                  
       1 year later  1,411.7  1,470.8  1,937.9  1,855.4  2,001.3  1,908.2  2,491.9  2,617.0  2,844.0  2,718.4   
       2 years later  1,372.1  1,482.1  1,871.0  1,889.2  2,036.4  2,169.0  2,500.7  2,844.8  2,881.9       
       3 years later  1,382.3  1,423.4  1,909.2  1,862.8  2,011.9  2,175.0  2,744.5  2,907.7          
       4 years later  1,326.0  1,499.0  1,903.8  1,834.3  2,012.5  2,369.9  2,793.7             
       5 years later  1,408.0  1,483.4  1,870.1  1,817.6  2,065.9  2,388.3                
       6 years later  1,395.6  1,445.3  1,842.7  1,837.0  2,079.0                   
       7 years later  1,364.0  1,416.8  1,854.5  1,842.1                      
       8 years later  1,345.3  1,426.7  1,857.4                         
       9 years later  1,360.6  1,426.5                            
       10 years later  1,365.3                               
        
       
       
       
       
       
       
       
       
       
       
       
      III.    Cumulative net (deficiency)/redundancy $(21.8)$132.6 $66.1 $30.7 $(147.7)$(739.7)$(767.1)$(344.1)$(234.4)$(22.6)  
       Percent (deficient)/ redundant  (1.6)% 8.5% 3.4% 1.6% (7.6)% (44.9)% (37.9)% (13.4)% (8.9)% (.8)% %
        
       
       
       
       
       
       
       
       
       
       
       
      IV.    Reconciliation of net liability re-estimated as of the end of the latest re-estimation period (see II. above):                                  
       Gross re-estimated liability  1,691.6  1,753.4  2,402.0  2,402.8  2,738.2  3,052.2  4,135.2  4,412.4  4,256.3  4,005.6   
       Less: gross re-estimated reinsurance recoverable  (326.3) (326.9) (544.6) (560.7) (659.2) (663.9) (1,341.5) (1,504.7) (1,374.4) (1,287.2)  
        
       
       
       
       
       
       
       
       
       
       
       
      Net re-estimated liability $1,365.3 $1,426.5 $1,857.4 $1,842.1 $2,079.0 $2,388.3 $2,793.7 $2,907.7 $2,881.9 $2,718.4   
        
       
       
       
       
       
       
       
       
       
       
       
      V.    Cumulative net amount of liability paid through:                                  
       1 year later  479.7  463.5  504.5  498.7  542.9  420.5  689.2  729.8  994.0  720.9   
       2 years later  710.1  665.3  771.2  830.9  741.1  860.2  1,167.4  1,429.6  1,394.5       
       3 years later  836.0  788.4  1,007.0  975.3  1,008.0  1,142.4  1,731.1  1,720.3          
       4 years later  905.3  940.9  1,147.4  1,129.5  1,181.6  1,516.1  1,936.7             
       5 years later  1,012.8  1,018.6  1,258.2  1,242.9  1,382.7  1,658.7                
       6 years later  1,062.6  1,088.7  1,351.0  1,317.4  1,487.3                   
       7 years later  1,111.0  1,158.8  1,405.6  1,384.2                      
       8 years later  1,162.4  1,200.7  1,457.7                         
       9 years later  1,195.1  1,246.1                            
       10 years later  1,235.2                               
        
       
       
       
       
       
       
       
       
       
       
       

      White Mountains Re Loss and LAE (1), (2), (3), (4), (5)

      Years Ended December 31,

      ($ in millions)

       

      1996

       

      1997

       

      1998

       

      1999

       

      2000

       

      2001

       

      2002

       

      2003

       

      2004

       

      2005

       

      2006

       

      I. Liability for unpaid losses and LAE:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Gross balance

       

      $

      2,364.1

       

      $

      2,303.5

       

      $

      2,439.7

       

      $

      2,278.0

       

      $

      3,151.2

       

      $

      3,865.2

       

      $

      3,819.4

       

      $

      3,716.3

       

      $

      3,864.3

       

      $

      4,308.8

       

      $

      3,708.8

       

      Less: reins. recoverables on unpaid losses and LAE

       

      (466.5

      )

      (457.2

      )

      (535.8

      )

      (634.2

      )

      (1,137.9

      )

      (1,317.0

      )

      (1,209.8

      )

      (1,095.2

      )

      (1,149.8

      )

      (1,633.6

      )

      (1,142.4

      )

      Net balance

       

      $

      1,897.6

       

      $

      1,846.3

       

      $

      1,903.9

       

      $

      1,643.8

       

      $

      2,013.3

       

      $

      2,548.2

       

      $

      2,609.6

       

      $

      2,621.1

       

      $

      2,714.5

       

      $

      2,675.2

       

      $

      2,566.4

       

      II. Cumulative net amount of liability paid through:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      1 year later

       

      496.5

       

      491.6

       

      520.0

       

      427.8

       

      686.1

       

      725.7

       

      977.3

       

      702.7

       

      941.0

       

      949.4

       

       

      2 years later

       

      760.2

       

      809.6

       

      727.0

       

      865.8

       

      1,164.0

       

      1,421.4

       

      1,370.9

       

      1,271.8

       

      1,369.4

       

       

       

       

       

      3 years later

       

      986.7

       

      963.7

       

      993.3

       

      1,148.0

       

      1,725.3

       

      1,710.9

       

      1,840.2

       

      1,547.5

       

       

       

       

       

       

       

      4 years later

       

      1,135.8

       

      1,117.3

       

      1,166.7

       

      1,519.6

       

      1,930.6

       

      2,108.9

       

      2,037.2

       

       

       

       

       

       

       

       

       

      5 years later

       

      1,246.2

       

      1,230.5

       

      1,365.8

       

      1,662.0

       

      2,236.6

       

      2,300.8

       

       

       

       

       

       

       

       

       

       

       

      6 years later

       

      1,338.8

       

      1,303.0

       

      1,470.2

       

      1,875.6

       

      2,385.5

       

       

       

       

       

       

       

       

       

       

       

       

       

      7 years later

       

      1,391.5

       

      1,369.6

       

      1,563.4

       

      1,996.7

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      8 years later

       

      1,443.5

       

      1,430.0

       

      1,627.8

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      9 years later

       

      1,488.1

       

      1,478.5

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      10 years later

       

      1,522.0

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      III. Net liability re-estimated as of:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      1 year later

       

      1,911.1

       

      1,828.4

       

      1,974.4

       

      1,904.1

       

      2,479.5

       

      2,601.2

       

      2,803.4

       

      2,642.6

       

      2,771.9

       

      2,893.2

       

       

      2 years later

       

      1,844.3

       

      1,864.0

       

      2,011.3

       

      2,166.1

       

      2,488.5

       

      2,827.8

       

      2,836.8

       

      2,704.5

       

      2,802.9

       

       

       

       

       

      3 years later

       

      1,885.5

       

      1,840.2

       

      1,988.8

       

      2,172.1

       

      2,732.1

       

      2,891.1

       

      2,911.7

       

      2,742.8

       

       

       

       

       

       

       

      4 years later

       

      1,882.7

       

      1,813.7

       

      1,989.3

       

      2,367.1

       

      2,782.6

       

      2,969.3

       

      2,969.6

       

       

       

       

       

       

       

       

       

      5 years later

       

      1,850.3

       

      1,797.0

       

      2,042.7

       

      2,386.7

       

      2,898.6

       

      3,033.8

       

       

       

       

       

       

       

       

       

       

       

      6 years later

       

      1,822.8

       

      1,816.3

       

      2,057.1

       

      2,446.9

       

      2,958.7

       

       

       

       

       

       

       

       

       

       

       

       

       

      7 years later

       

      1,834.7

       

      1,822.6

       

      2,120.6

       

      2,479.2

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      8 years later

       

      1,838.7

       

      1,884.5

       

      2,136.1

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      9 years later

       

      1,895.9

       

      1,886.6

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      10 years later

       

      1,883.5

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      IV. Cumulative net (deficiency)/ redundancy

       

      $

      14.1

       

      $

      (40.3

      )

      $

      (232.2

      )

      $

      (835.4

      )

      $

      (945.4

      )

      $

      (485.6

      )

      $

      (360.0

      )

      $

      (121.7

      )

      $

      (88.4

      )

      $

      (218.0

      )

       

      Percent (deficient)/ redundant

       

      0.7

      %

      (2.2

      )%

      (12.2

      )%

      (50.8

      )%

      (47.0

      )%

      (19.1

      )%

      (13.8

      )%

      (4.6

      )%

      (3.3

      )%

      (8.1

      )%

       

      V. Reconciliation of net liability re-estimated as of the end of the latest re-estimation period (see III. above):

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Gross re-estimated liability

       

      2,433.5

       

      2,453.8

       

      2,813.7

       

      3,211.0

       

      4,387.0

       

      4,604.2

       

      4,353.2

       

      3,982.6

       

      4,094.3

       

      4,665.5

       

       

      Less: gross re-estimated reinsurance recoverable

       

      (550.0

      )

      (567.2

      )

      (677.6

      )

      (731.8

      )

      (1,428.3

      )

      (1,570.4

      )

      (1,383.6

      )

      (1,239.8

      )

      (1,291.4

      )

      (1,772.3

      )

       

      Net re-estimated liability

       

      $

      1,883.5

       

      $

      1,886.6

       

      $

      2,136.1

       

      $

      2,479.2

       

      $

      2,958.7

       

      $

      3,033.8

       

      $

      2,969.6

       

      $

      2,742.8

       

      $

      2,802.9

       

      $

      2,893.2

       

       

      VI. Cumulative gross (deficiency)/redundancy

       

      $

      (69.4

      )

      $

      (150.3

      )

      $

      (374.0

      )

      $

      (933.0

      )

      $

      (1,235.8

      )

      $

      (739.0

      )

      $

      (533.8

      )

      $

      (266.3

      )

      $

      (230.0

      )

      $

      (356.7

      )

       

      Percent (deficient)/redundant

       

      (2.9

      )%

      (6.5

      )%

      (15.3

      )%

      (41.0

      )%

      (39.2

      )%

      (19.1

      )%

      (14.0

      )%

      (7.2

      )%

      (6.0

      )%

      (8.3

      )%

       


      (1)

      The table includes the complete loss development history for all periods presented for all companies acquired by Folksamerica through an instrument of transfer and assumption approved by the appropriate insurance regulators. Under the instrument, insurance regulators require that Folksamerica report reserve development as if the companies had been combined from their inception.

      (2)

      Folksamerica became a wholly ownedwholly-owned subsidiary of White Mountains during 1998. Reserve development for the years ended 19941996 through 1997 reflects development on reserves established before White Mountains consolidated Folksamerica'sFolksamerica’s results.

      (3)

      Sirius, including Scandinavian Re, became a wholly ownedwholly-owned subsidiary of White Mountains Re during 2004. The table includes the complete loss development history for all periods presented. Reserve development for the years ended 19941996 through 2003 reflects development on reserves established before White Mountains Re consolidated Sirius'Sirius’ results. See table, below.

      (4)

      Loss             White Mountains Re acquired $136.8 million in net loss and LAE reserves when it acquired Tryg-Baltica during 2004. For periods prior to December 31, 2004, loss and LAE reserves for Tryg Baltica (acquired in November, 2004)Tryg-Baltica are onlynot included as of December 31, 2004, due to lack of availability of loss development history on a comparable basis. Net

      (5)     White Mountains Re acquired $38.3 million in net loss and LAE reserves when it acquired Stockbridge during 2006. For periods prior to December 31, 2006, loss and LAE reserves for Tryg BalticaStockbridge are $134.5 million asnot included due to lack of December 31, 2004.

      availability of loss development history.


       

      The cumulative net (deficiency)/redundancy in the table above reflects adverse development recorded by Scandinavian Re, which was acquired by White Mountains Re as part of the Sirius Acquisition in 2004, and has been in run-offrun off since 2002. This hasScandinavian Re was a writer of non-traditional reinsurance products from 1988 to 2001. The cumulative net (deficiency)/redundancy in the effect of significantly increasingtable above also includes adverse development from A&E claims. White Mountains Re's cumulative



      deficiency for each of the years presentedexposure to A&E claims results mainly from asbestos claims arising from treaty and facultative contracts written prior to 1985 at two companies acquired by Folksamerica - MONY Reinsurance in 1991 and Christiania General in 1996.  As a result, the table including the yearsabove reflects reserve development on Scandinavian Re prior to White Mountains Re's acquisition of Sirius.Re’s ownership and on A&E business that was not underwritten by White Mountains Re.  The table presented below represents White Mountains Re'sRe’s cumulative net (deficiency)/redundancy excluding Scandinavian Re:Re and A&E claims:


       Years Ended December 31,
       

       

      Years Ended December 31,

       

      ($ in millions)

       

       

      1996

       

      1997

       

      1998

       

      1999

       

      2000

       

      2001

       

      2002

       

      2003

       

      2004

       

      2005

       

      2006

       

      1994
       1995
       1996
       1997
       1998
       1999
       2000
       2001
       2002
       2003
       2004
       
      Cumulative net (deficiency) /redundancy, excluding Scandinavian Re $(6.3)$159.2 $90.6 $42.1 $(64.6)$(244.8)$(74.0)$(20.8)$(30.6)$13.7 $ 
       
       
       
       
       
       
       
       
       
       
       
       

      Cumulative net (deficiency) redundancy, excluding Scandinavian Re and A&E

       

      $

      175.3

       

      $

      101.7

       

      $

      (26.7

      )

      $

      (233.9

      )

      $

      (90.5

      )

      $

      (56.5

      )

      $

      (61.2

      )

      $

      (26.1

      )

      $

      (17.9

      )

      $

      (230.8

      )

       

      Percent (deficient) / redundant  (0.5)% 10.4% 4.8% 2.3% (3.6)% (17.8)% (5.5)% (1.5)% (1.9)% 0.7% %

       

      7.7

      %

      4.6

      %

      (1.2

      )%

      (12.0

      )%

      (3.7

      )%

      (2.1

      )%

      (2.2

      )%

      (0.9

      )%

      (0.6

      )%

      (6.0

      )%

       

       
       
       
       
       
       
       
       
       
       
       
       

       

      In general, many of Scandinavian Re's contracts were large and contained high limits.  During the soft market period of 1999 to 2001, when pricing, terms and conditions were not very favorable, many of the contracts Scandinavian Re entered into were underpriced, resulting in much higher incurred losses than expected.  These factors caused a significant amount of adverse development to be reported by Scandinavian Re, nearly all of which was recorded prior to White Mountains Re's ownership.  As a result, including Scandinavian Re's results in the ten year table presents a distorted picture of the historic loss reserve adequacy of White Mountains Re's ongoing businesses.

      White Mountains Re's net incurred losses from A&E claims have totaled $145 million over the past ten years.  Although losses arising from A&E claims were on contracts that were not underwritten by White Mountains Re, White Mountains Re is liable for any additional losses arising from such contracts.  Accordingly, White Mountains Re cannot guarantee that it will not incur additional A&E losses in the future.  Refer to “CRITICAL ACCOUNTING ESTIMATES” in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for further details of White Mountains Re's A&E reserves.

      The following table reconciles loss and LAE reserves determined on a regulatory basis to loss and LAE reserves determined in accordance with GAAP at December 31, as follows:


       December 31,

       

      December 31,

       

      (Millions)

      2004
       2003
       2002

      Millions

       

      2006

       

      2005

       

      2004

       

      Regulatory reserves $3,092.0 $1,325.9 $1,148.8

       

      $

      2,866.3

       

      $

      3,109.7

       

      $

      3,092.0

       

      Reinsurance recoverable on unpaid losses and LAE(1) 948.2 480.5 513.2

      Reinsurance recoverable on unpaid losses and LAE (1)

       

      875.6

       

      1,513.1

       

      948.2

       

      Discount on loss reserves 245.2  

       

      141.6

       

      184.5

       

      245.2

       

      Reserves allocated to other segments (91.2) (31.5) 

       

      (123.6

      )

      (105.6

      )

      (91.2

      )

      Purchase accounting and other (23.9) 2.3 2.3

       

      (51.1

      )

      (21.4

      )

      (23.9

      )

       
       
       
      GAAP reserves $4,170.3 $1,777.2 $1,664.3

       

      $

      3,708.8

       

      $

      4,680.3

       

      $

      4,170.3

       

       
       
       

      (1)

      Represents adjustments made to add back reinsurance recoverables included with the presentation of reserves under regulatory accounting.


      ESURANCE

      ESURANCE

      The Esurance group of companies, which is headquarteredhas its United States headquarters in San Francisco, havehas been part of White Mountains since October 2000. Esurance markets personal auto insurance directly to customers and through select online agents. Most customer interaction with the company takes place through Esurance'sEsurance’s website, www.esurance.com. Through the website, customers can get real-time quotes, compare quotes from other companies, purchase their policies, report claims and manage their accounts. At December 31, 2006, Esurance’s in-force policy count had grown to over 370,000 policies, as compared to 43,000 policies at the end of 2002.

              Esurance'sEsurance’s underwriting companies, Esurance Insurance Company and Esurance Property and Casualty Insurance Company are both rated "A"“A” (Excellent, the third highest of fifteen ratings) by A.M. Best. Additionally,Over the past several years, Esurance has ceded a large percentage of its business to certain other subsidiaries of White Mountains, primarily for capital management purposes. The Esurance segment also includes insurance ceded by Esurance to its affiliate, Folksamerica.subsidiaries of White Mountains. At December 31, 2006 and 2005, Esurance had $723.6 million and $414.2 million of total assets and $308.5 million and $176.7 million of shareholder’s equity, respectively.




      Geographic Concentration

      As of December 31, 2004,2006, Esurance is writingwrites business in 17twenty-four states. These states represent 66%approximately 79% of the premium volume for the entire U.S. personal automobileauto insurance market. For the years ended December 31, 2006, 2005 and 2004, 2003Esurance had net written premiums of $596 million, $349 million and 2002, Esurance's business was$199 million, respectively, which were produced in the following states:



       Year Ended December 31,
       

       

      Year Ended December 31,

       

      Net written premiums by state

       
      2004
       2003
       2002
       

       

         2006   

       

         2005   

       

         2004   

       

      CaliforniaCalifornia 25%32%43%

       

      19

      %

      20

      %

      25

      %

      FloridaFlorida 24 24 14 

       

      17

       

      20

       

      24

       

      New York

       

      9

       

      8

       

      5

       

      TexasTexas 11 15 12 

       

      6

       

      9

       

      11

       

      MichiganMichigan 7 5 1 

       

      6

       

      7

       

      7

       

      New Jersey

       

      5

       

      3

       

       

      PennsylvaniaPennsylvania 5 7 7 

       

      5

       

      4

       

      5

       

      New York 5 2 4 

      Washington

       

      4

       

      3

       

      1

       

      OtherOther 23 15 19 

       

      29

       

      26

       

      22

       

       
       
       
       
      Total 100%100%100%
       
       
       
       

      Total

       

      100

      %

      100

      %

      100

      %


      Marketing

              Esurance distributes approximately 80% of its business directly to customers online and over the phone. For this business, Esurance does not pay agent commissions on either new or renewal policies. The remaining 20% of Esurance's business is distributed through large online agents. Marketing

      Esurance targets convenience-focused, technology savvytechnology-savvy consumers who userely on the Internet for most ofinternet to manage their financial services transactions.needs. Prior to 2004, Esurance had advertised its products and services primarily online. Beginning in 2004, Esurance began to advertise on local television networks with the “Erin Esurance” brand campaign, featuring an animated female secret-agent character. The campaign is designed to communicate Esurance’s unique, technology-focused approach to auto insurance. During 2006, Esurance shifted its television advertising focus to national cable television networks, which has proven to be more effective and cost efficient than local television advertising.

      Erin Esurance attracts its target customers through a continuously optimized mixnow appears in nearly all of onlinethe company’s offline and offlineonline advertising. Esurance advertises offline on television, radio, and through direct mail. Esurance also has sponsor relationships with professional and college sports teams, as well as various environmental and community organizations. Esurance advertises online through paid search (e.g., Google and Yahoo! Search), and on a wide variety of insurance, finance, and automotive sites, along with major portals (e.g., MSNweb sites.

      The launch of offline advertising and Yahoo!)the “Erin Esurance” campaign have resulted not only in continued significant business growth, but also in substantial increases in brand awareness for the company, particularly among its target customer base of web-savvy individuals. Esurance is the third largest issuer of auto insurance quotes on the Internet, behind only Progressive and search advertisers, like Google. Esurance also advertises on television, radio and through direct mail.GEICO.


      Esurance uses a rigorous, analytical marginal cost methodology to allocate its marketing budget across the various media channels it uses. This methodology enables the company to focus its marketing resources on attracting and retaining customers that have the best expected lifetime premium and/or combined ratio.

      Underwriting and Pricing

              With its web-enabled technology, Esurance collects and verifies detailed underwriting information in real-time while customers transact with the company online. This real-timeReal-time access to customer information allows Esurance to continually develop and refine its highly segmented, tiered pricing models. Esurance believes that its tiered pricing models have a greater statistical correlation with historical loss experience than traditional pricing models have shown. As a result, Esurance canis able to quote rates to customers that most closely correspond to the individual risk characteristics of the customer, enabling Esurance to focus on keeping insurance rates competitive without compromising the company'scompany’s loss ratio targets.



      Competition

      Competition

      Esurance competes with national and regional personal automobileauto insurance companies, though Esurance'sEsurance’s main competition iscomes from other direct writers like Progressive, GEICO, and 21st Century.

              Esurance leveragesBy leveraging web-enabled technology, allowing it toEsurance can capture data real-time and reactrespond to market shifts. With an array of customer information at its disposal,changing loss trends. Esurance is continually able to refine pricing, enhance its auto product and optimize dollars spent on marketing. Technologymarketing with the array of customer information that is at its disposal. Web technology also allows Esurance to provide high quality,24/ 24/7 customer service and claims handling for a competitive price.



              Esurance'sEsurance’s paperless business process allowallows the company to significantly reduce operating costs typically associated with policy processing, verification and endorsement activities. As a result, the company is able to achieve efficient, low-cost acquisition and operating expense structures.


      Claims Management

              Esurance handles its claims through regional claim centers in California, Florida, Texas and New York. Esurance takes the initial notice of lossclaims at the company's customer service center,company’s loss reporting unit in South Dakota, which is available for customers 24 hours a day, 365 days a year. The loss reporting unit then assignstransfers claims to the regional claim centers.offices in Arizona, California, Florida, Georgia, New Jersey, New York, and Texas where claims are handled and adjusted.

              Esurance'sEsurance’s claims organization leverages technology to reduce cycle times.times and achieve strict claims performance metrics. Rapid response to and resolution of claims creates a stronger relationship with customers, while also decreasing ancillary claims costs, such as rental car fees. Additionally, Esurance maintains a special investigative unit designed to detect insurance fraud, and actively supports efforts by regulatory bodies and trade associations to curtail the cost of insurance fraud.


      Catastrophe Risk
      Management

              Esurance'sEsurance’s sole line of business is personal automobileauto insurance that covers liabilities and physical damage arising from the operation of automobiles. The majority of Esurance'sEsurance’s customers elect coverage for physical damage (85%(81%), resulting in exposure to catastrophe losses at Esurance for hurricanes, hailstorms, earthquakes and other acts of nature. Generally, catastrophe costs are low for personal auto in relation to other lines of business, such as homeowners and commercial property. Additionally, Esurance'sEsurance’s broad geographic distribution limits its concentration of risk and the potential for losses to accumulate from a single event. Esurance estimates that its PML for a single event is less than 1% of net written premium.


      Loss and Loss Adjustment Expense Information

      Esurance establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. The process of estimating reserves for Esurance is similar to the process described in"Loss and Loss Adjustment Expense Reserves" in the"ONEBEACON" discussioninvolves a considerable degree of judgment by management and, as of any given date, is inherently uncertain. As described previously, uncertaintiesUncertainties in projecting estimates of ultimate loss and LAE are magnified by the time lag between when a claim actually occurs and when it is reported and settled i.e.,(i.e. the "claim-tail."claim-tail). Esurance writes primarily "short-tail"short-tail personal automobileauto insurance policies, which reduces the uncertainty inherent in its loss and LAE reserves when compared to insurance companies that write "long-tail"long-tail policies, such as workers compensation.

      Management believes that Esurance'sEsurance’s loss and LAE reserves as of December 31, 20042006 are adequate; however, ultimate loss and LAE may deviate, perhaps materially, from the amounts currently reflected in the reserve balance. Adverse development, if any, would impact the Company'sCompany’s future results of operations.

      The following information presents (1) Esurance'sEsurance’s reserve development over the fourfive years since inception and (2) a reconciliation of reserves on a Statutory basis to reserves determined in accordance with GAAP, each as prescribed by Securities Act Industry Guide No. 6.

      Section I of the 10 year table shows the estimated liability that was recorded at the end of each of the indicated years for all current and prior accident year unpaid lossesloss and LAE. The liability represents the estimated amount of lossesloss and LAE for claims that were unpaid at the balance sheet date, including IBNR reserves. In accordance with GAAP, the liability for unpaid lossesloss and LAE is recorded in the balance sheet gross of the effects of reinsurance with an estimate of reinsurance recoverables arising from reinsurance contracts reported separately as an asset. The net balance represents the



      estimated amount of unpaid lossesloss and LAE outstanding as of the balance sheet date, reduced by estimates of amounts recoverable under reinsurance contracts.


      Section II shows the cumulative amount of net loss and LAE paid relating to recorded liabilities as of the end of each succeeding year. Section III shows the re-estimated amount of the previously recorded net liability as of the end of each succeeding year. Estimates of the liability for unpaid lossesloss and LAE are increased or decreased as payments are made and more information regarding individual claims and trends, such as overall frequency and severity patterns, becomes known. Section IIIIV shows the cumulative net (deficiency)/redundancy representing the aggregate change in the liability from original balance sheet dates and the re-estimated liability through December 31, 2004.2006. Section IVV shows the re-estimated gross liability and re-estimated reinsurance recoverables through December 31, 2004.2006. Section VVI shows the cumulative amount of net lossesgross (deficiency)/redundancy representing the aggregate change in the liability from original balance sheet dates and LAE paid relating to recorded liabilities as of the end of each succeeding year.re-estimated liability through December 31, 2006.

       
       Esurance Loss and LAE(1),(2)
      Years Ended December 31,

       
      ($ in millions)

       
       2001
       2002
       2003
       2004
       
      I.    Liability for unpaid losses and LAE:             
       Gross balance $4.0 $15.5 $39.1 $63.0 
       Less: reinsurance recoverables on unpaid losses and LAE        0.1 
        
       
       
       
       
      Net balance $4.0 $15.5 $39.1 $62.9 
        
       
       
       
       
      II.    Net liability re-estimated as of:             
       1 year later  4.0  16.0  34.0   
       2 years later  4.4  15.3       
       3 years later  4.3          
        
       
       
       
       
      III.    Cumulative net (deficiency)/ redundancy $(0.3)$0.2 $5.1 $ 
       Percent (deficient)/redundant  (6.7)% 1.3% 13.0% %
        
       
       
       
       
      IV.    Reconciliation of net liability re-estimated as of the end of the latest re-estimation period (see II. above):             
       Gross re-estimated liability  4.3  15.3  34.2   
       Less: gross re-estimated reinsurance recoverable        0.2    
        
       
       
       
       
      Net re-estimated liability $4.3 $15.3 $34.0 $ 
        
       
       
       
       
      V.    Cumulative net amount of liability paid through:             
       1 year later  2.5  9.3  18.9   
       2 years later  3.3  12.2       
       3 years later  3.9          
        
       
       
       
       

       

       

      Esurance Loss and LAE (1) (2)

       

       

       

      Years Ended December 31,

       

      ($ in millions)

       

      2001

       

      2002

       

      2003

       

      2004

       

      2005

       

      2006

       

      I. Liability for unpaid loss and LAE:

       

       

       

       

       

       

       

       

       

       

       

       

       

      Gross balance

       

      $

      4.0

       

      $

      15.5

       

      $

      39.1

       

      $

      63.0

       

      $

      94.1

       

      $

      167.4

       

      Less: reinsurance recoverables on unpaid loss and LAE

       

       

       

       

      (.1

      )

      (.1

      )

      (.5

      )

      Net balance

       

      $

      4.0

       

      $

      15.5

       

      $

      39.1

       

      $

      62.9

       

      $

      94.0

       

      $

      166.9

       

      II. Cumulative net amount of net liability paid through:

       

       

       

       

       

       

       

       

       

       

       

       

       

      1 year later

       

      2.5

       

      9.3

       

      18.9

       

      35.8

       

      62.4

       

       

      2 years later

       

      3.3

       

      12.2

       

      24.5

       

      47.4

       

       

       

       

       

      3 years later

       

      3.9

       

      13.7

       

      28.2

       

       

       

       

       

       

       

      4 years later

       

      4.1

       

      14.6

       

       

       

       

       

       

       

       

       

      5 years later

       

      4.1

       

       

       

       

       

       

       

       

       

       

       

      III. Net liability re-estimated as of:

       

       

       

       

       

       

       

       

       

       

       

       

       

      1 year later

       

      4.0

       

      16.0

       

      34.0

       

      54.9

       

      97.2

       

       

      2 years later

       

      4.4

       

      15.3

       

      29.4

       

      55.5

       

       

       

       

       

      3 years later

       

      4.3

       

      14.4

       

      29.5

       

       

       

       

       

       

       

      4 years later

       

      4.2

       

      14.6

       

       

       

       

       

       

       

       

       

      5 years later

       

      4.1

       

       

       

       

       

       

       

       

       

       

       

      IV. Cumulative net (deficiency)/ redundancy

       

      $

      (.1

      )

      $

      .9

       

      $

      9.6

       

      $

      7.4

       

      $

      (3.2

      )

       

      Percent (deficient)/redundant

       

      (3.7

      )%

      6.0

      %

      24.5

      %

      11.9

      %

      (3.4

      )%

       

      V. Reconciliation of net liability re-estimated as of the end of the latest re-estimation period (see III. above):

       

       

       

       

       

       

       

       

       

       

       

       

       

      Gross unpaid loss and LAE latest re-estimate

       

      $

      4.1

       

      $

      14.6

       

      $

      29.8

       

      $

      56.3

       

      $

      97.8

       

       

      Reinsurance recoverable latest re-estimate

       

       

       

      (.3

      )

      (.8

      )

      (.6

      )

       

      Net unpaid loss and LAE latest re-estimate

       

      $

      4.1

       

      $

      14.6

       

      $

      29.5

       

      $

      55.5

       

      $

      97.2

       

       

      VI. Cumulative Gross redundancy (deficiency)

       

      $

      (.1

      )

      $

      .9

       

      $

      9.3

       

      $

      6.7

       

      $

      (3.7

      )

       

      Percent deficient

       

      (2.5

      )%

      5.8

      %

      23.8

      %

      10.6

      %

      (3.9

      )%

       


      (1)

      The table consists of reserve information for Esurance Insurance Company, Esurance Property & Casualty Insurance Company, and business ceded by Esurance to Folksamerica.

      Folksamerica, OneBeacon and Sirius.

      (2)

      Esurance became a wholly owned subsidiary of White Mountains during 2000.

      The following table reconciles loss and LAE reserves determined on a Statutory basis to loss and LAE reserves determined in accordance with GAAP at December 31, as follows:


       December 31,

       

      December 31,

       

      (Millions)

      2004
       2003
       2002

      Millions

       

      2006

       

      2005

       

      2004

       

      Statutory reserves $16.2 $7.6 $15.5

       

      $

      43.3

       

      $

      30.1

       

      $

      16.2

       

      Reserves allocated from other segments 46.7 31.5 

       

      123.6

       

      64.0

       

      46.7

       

      Reinsurance recoverable on unpaid losses and LAE(1) .1  
       
       
       

      Reinsurance recoverable on unpaid losses and LAE (1)

       

      .5

       

       

      .1

       

      GAAP reserves $63.0 $39.1 $15.5

       

      $

      167.4

       

      $

      94.1

       

      $

      63.0

       

       
       
       

      (1)

      Represents adjustments made to add back reinsurance recoverables included with the presentation of reserves under regulatory accounting.



      OTHER OPERATIONS

      WM Advisors

      WM Advisors is a registered investment adviser that manages White Mountains’ investments in fixed income and equity securities, including hedge funds, limited partnerships and private equities. WM Advisors also has investment management agreements with third parties, most notably with Symetra and Montpelier Re. At December 31, 2006, WM Advisors had approximately $32 billion in assets under management, $10 billion of which related to consolidated subsidiaries of White Mountains.

      WM Advisors has a sub-advisory agreement with Prospector Partners LLC (“Prospector”), a registered investment adviser, under which Prospector manages most of White Mountains’ publicly-traded common equity and convertible securities. Prospector also provides consulting and advisory services to White Mountains through a separate agreement with WM Advisors on matters such as capital management, asset allocation, private equity investments and mergers and acquisitions.

      Galileo

      During 2006, White Mountains entered into the weather risk management business through its newly formed subsidiary, Galileo. Galileo sells its weather risk management products as derivatives that are designed to assist corporate and governmental customers, primarily energy companies, utilities and construction companies, in managing their economic exposure to variations in weather conditions. Galileo then manages its weather derivative portfolio through the employment of a variety of risk management strategies to preserve its expected margins. These strategies include geographical diversification of risk exposures and economic hedging through the use of derivatives traded in both the over-the-counter and exchange-traded derivative markets. Additionally, Galileo economically hedges its risk exposure by buying and selling similar weather risk contracts with different counterparties. For example, Galileo may sell an option to protect a customer if it becomes too cold in a certain location and then purchase an option from another counterparty that pays Galileo if it becomes too cold in that same location. Galileo also diversifies its risk exposure by entering into contracts that protect different clients with opposite exposures to the same quantifiable weather element. For example, Galileo may sell an option to protect a customer if it becomes too cold in a certain location and then sell another option that protects a different customer if it becomes too warm in that same location. Risk management is undertaken on a portfolio-wide basis in order to maintain a portfolio that Galileo believes is well diversified and that remains within the aggregate risk tolerance established by senior management.

      The CompanyWeather derivatives, which usually take the form of swaps or options, are contracts with financial settlements based on the performance of an index linked to a quantifiable weather element, such as temperature, precipitation, snowfall or windspeed. Typical contracts span several months such as a summer or winter season. A weather swap is a contract that requires one of the contractual parties to make a payment to the other contractual party when a weather index rises above or falls below a specified level, or “strike”. Therefore, upon settlement of a weather swap, Galileo may make or receive a payment. A weather call option is a contract that entitles the purchaser to receive a payment when the weather index exceeds a specified strike, and a weather put option is a contract that entitles the purchaser to receive a payment when the weather index is less than a specified strike. Every weather derivative is defined by a series of terms, including strike, location, notional payout rate (per unit or event), maximum payout, time period and reference index, which is calculated from weather data collected from a specified weather station.

      WM Life Re

      During 2006, White Mountains entered into the variable annuity reinsurance business through its Intermediate Holding Companies

              The Company's intermediate holding companies include Fund Americannewly formed subsidiary, WM Life Re. WM Life Re reinsures death and Fund American Enterprises Holdings, Inc. ("FAEH"), both U.S.-domiciled companies,living benefit guarantees associated with certain variable annuities issued in Japan, commencing September 1, 2006. WM Life Re has assumed the risk related to a shortfall between the account value and the guaranteed value that must be paid by the ceding company to an annuitant or to an annuitant’s beneficiary in accordance with the underlying annuity contracts. Generally, the liabilities associated with these guarantees increase with declines in the equity markets, interest rates and currencies against the Japanese Yen, as well as various intermediate holding companies domiciledwith increases in market volatilities. The liability is also affected by annuitant-related actuarial assumptions, including surrender and mortality rates.

      WM Life Re purchases derivative instruments, which currently include put option and futures contracts on major equity indices, currency pairs and futures contracts on bonds, to mitigate the risks associated with changes in the United States, Barbados, Luxembourg, Swedenfair value of the reinsured variable annuity guarantees. WM Life Re measures its net exposure to changes in relevant interest rates, foreign exchange rates and Bermuda. equity markets on a daily basis and adjusts its economic hedge positions within risk guidelines established by senior management. WM Life Re also monitors the effects of annuitant-related experience against actuarial assumptions (including surrender and mortality rates) on a weekly basis and adjusts relevant assumptions and economic hedge positions if required.


      Tuckerman Capital, LP and Tuckerman Capital II, LP

      White Mountains arrangesowns approximately 96% of Tuckerman Capital, LP and approximately 50% of Tuckerman Capital II, LP (collectively, the majority of its financing through the Company and these intermediate holding companies.

              In May 2003, Fund American issued $700 million face value of senior unsecured debt through a public offering, at an issue price of 99.7% (the "Senior Notes"“Tuckerman Funds”). The Tuckerman Funds are managed by Tuckerman Capital, a private investment firm that focuses on acquisitions of small manufacturing companies, and are consolidated within White Mountains’ financial statements. Tuckerman Capital focuses its acquisition efforts on companies with enterprise values ranging from $5 million to $25 million and with established track records of success. The companies owned by the Tuckerman Funds are manufacturers of highly engineered, non-commodity products across a broad range of industries.

      At December 31, 2006 and 2005, the Tuckerman Funds had $101 million and $64 million of total assets and accounted for $38 million and $34 million of White Mountains’ net proceeds from the issuanceassets, respectively.

      Prospector Offshore Fund, Ltd.

      White Mountains owns approximately 42% of the Senior Notes were used to repay allProspector Offshore Fund, Ltd. (“Prospector Fund”). The Prospector Fund is managed by Prospector, a registered investment advisor, and is consolidated within White Mountains’ financial statements. The Prospector Fund is an open-ended mutual fund that pursues investment opportunities in a variety of equity and equity-related instruments, with a principal focus on the term loansfinancial services sector and a portion ofspecial emphasis on the revolving loan (withinsurance industry.

      At December 31, 2006 and 2005, the remainder repaid with cash on hand) underProspector Fund American's previous bank facility.

              In September 2003, Fund American terminated its old revolving credit facility, which then consisted solely of an undrawn $175 million revolving credit line, and replaced it with a new $300 million revolving credit facility (the "Bank Facility"), under which both Fund American and the Company are permitted borrowers. In August 2004, Fund American restructured and re-syndicated the Bank Facility to increase the availability under the revolving credit facility to $400had $211 million and to extend the maturity from September 2006 to August 2009. As$177 million of December 31, 2004, the Bank Facility was undrawn.total assets and accounted for $59 million and $55 million of White Mountains’ net assets, respectively.

              As part of the financing for the OneBeacon Acquisition, Berkshire Hathaway, Inc. ("Berkshire") invested a total of $300 million in cash, of which (1) $225 million was for the purchase of preferred stock of Fund American (the "Berkshire Preferred Stock"), which has a $300 million redemption value; and (2) $75 million was for the purchase of warrants to acquire 1,724,200 Common Shares of the Company (the "Warrants"). The Berkshire Preferred Stock is entitled to a dividend of no less than 2.35% per quarter and is mandatorily redeemable on May 31, 2008. During 2004, Berkshire exercised its warrants for $294 million in cash.

              Also as part of the financing of the OneBeacon Acquisition, Zenith Insurance Company ("Zenith") purchased $20 million in cumulative non-voting preferred stock of FAEH (the "Zenith Preferred Stock"). The Zenith Preferred Stock is entitled to a dividend of no less than a 2.5% per quarter through June 30, 2007 and a dividend of no less than 3.5% per quarter thereafter. The Zenith Preferred Stock is mandatorily redeemable on May 31, 2011. At the Company's option, the Zenith Preferred Stock may be redeemed on June 30, 2007.




      International American Group

      In October 1999, White Mountains acquired the group of companies included in the International American Group, which included American Centennial, British Insurance Company and Peninsula.Peninsula Insurance Company (“Peninsula”).

      Delaware-domiciled American Centennial and Cayman Island-domiciled British Insurance Company are property and casualty insurance and reinsurance companies in run-off. At December 31, 20042006 and 2003,2005, American Centennial had $61.3$80 million and $61.1$77 million of total assets and $21.0$13 million and $22.6$17 million of shareholder'sshareholder’s equity, respectively. At December 31, 20042006 and 2003,2005, British Insurance Company had $33.4$37 million and $25.7$38 million of total assets and $4.5$8 million and $5.6$6 million of shareholder'sshareholder’s equity, respectively.

      In January 2004, White Mountains sold Peninsula, which is a Maryland-domiciled property and casualty insurer, for $23.3$23 million. AtFor the year ended December 31, 2003, Peninsula had $60.6 million of total assets and $21.7 million of shareholder's equity, respectively. For the years ended December 31, 2003 and 2002, Peninsula had $34.1 million and $29.5$34 million of net written premiums, respectively.premiums.

      WTM Bank Facility


      The Company and White Mountains Re Group, Ltd. are both permitted borrowers under a $500 million revolvingINVESTMENTS
      credit facility (the “WTM Bank Facility”), which matures in November 2011. As of December 31, 2006, White Mountains had $320 million of debt outstanding under the WTM Bank Facility.

              TheINVESTMENTS

      White Mountains’ investment portfoliosphilosophy is to maximize its after-tax total risk-adjusted return over the long term. Under this approach, each dollar of after-tax investment income and realized and unrealized gains and losses is valued equally. White Mountains' insurance and reinsurance operations consist primarilyMountains’ investment portfolio mix as of December 31, 2006 consisted in large part of high-quality, fixed maturity investments but also consist, in part, ofand short-term investments, commonas well as equity securitiesinvestments and other investments, (principally investments insuch as hedge funds, limited partnership interests).partnerships and private equities. White Mountains'Mountains’ management believes that prudent levels of investments in common equity securities and other investments within its investment portfolio are likely to enhance long-term after-tax total returns without significantly increasing the risk profile of the portfolio when considered over long periods of time and balanced with leverage and insurance risk considerations. White Mountains seeks to maximize after-tax risk-adjusted returns over the long term.portfolio.

              At December 31, 2004, approximately 99% of White Mountains' fixed maturity investments received an investment grade rating from Standard and Poor's ("S&P") or from Moody's Investor Services ("Moody's") if a given security is unrated by S&P. S&P and Moody's are two third party rating agencies that assess the credit quality of companies that have publicly issued debt. An investment grade rating, which is indicative of a strong credit profile of an issuer, is defined as "BBB-" (Adequate, the 10th highest of 24 ratings) or better by S&P and "Baa3" (Adequate, the 10th highest of 21 ratings) or better by Moody's. White Mountains expects to continue to invest primarily in high quality, fixed maturity investments. Nearly all the fixed maturity investments currently held by White Mountains are publicly traded, and as such are considered to be liquid.

              At December 31, 2004 White Mountains' consolidated investment portfolio consisted of $7,900.0 million (75%) of fixed maturity investments, $1,058.2 million (10%) of short-term investments, $1,043.9 million (10%) of common equity securities and $527.4 million (5%) of other investments. White Mountains' fixed maturity investments at December 31, 2004 consisted principally of corporate debt securities (49%), U.S. government and agency securities (30%), foreign government obligations (10%), mortgage-backed securities (9%) and preferred equity securities and municipal bonds (2%).


              White Mountains' investment philosophy is to invest all assets with a view towards maximizing its after-tax total return over extended periods of time. Under this approach, each dollar of after-tax investment income, realized and unrealized gains and losses is valued equally. White Mountains'Mountains’ overall fixed maturity investment strategy is to purchase securities that are attractively priced in relation to perceived credit risks. White Mountains generallyalso actively manages the interest rate risk associated with holding fixed maturity investments by actively monitoring and maintaining the average duration of the portfolio, with a view towards achieving an adequateabout 2 years at December 31, 2006, including short-term investments, to seek the highest after-tax, risk-adjusted total returns.

      Prospector’s equity investment strategy is to maximize absolute risk-adjusted total return without subjectingthrough investments in a variety of equity and equity-related instruments, using bottom-up, value discipline. Preservation of capital is of the utmost importance. Using a value orientation, White Mountains invests in relatively concentrated positions in the United States and other developed markets.


      Trust account investments

      In connection with the OneBeacon Offering, Fund American and FAEH each established an irrevocable grantor trust. The assets of each trust is solely dedicated to the satisfaction of the payment of dividends and redemption amounts on, respectively, $300 million liquidation preference of Fund American’s Berkshire Preferred Stock, and $20 million liquidation preference of FAEH’s Zenith Preferred Stock. Fund American and FAEH funded their respective trusts with cash and purchased a portfolio to an unreasonable level of interest rate risk. At December 31, 2004, the duration of White Mountains' fixed maturity investmentssecurities issued by the U.S. government and short-term investments was approximately 3 years.government sponsored enterprises, the scheduled interest and principal payments of which are sufficient to pay when due all amounts required under the terms of the Berkshire Preferred Stock and the Zenith Preferred Stock, respectively (including the mandatory redemption of the Berkshire Preferred Stock in May 2008 and the optional redemption of the Zenith Preferred Stock in June 2007, which White Mountains will exercise). See “Management’s Discussion and Analysis of Financial Condition and Results of Operations-Liquidity and Capital Resources.”

      Montpelier Re

      Montpelier Re Holdings Ltd. ("Montpelier")

      In December 2001, White Mountains, the Benfield Group plc and several other private investors established Montpelier Re and its wholly ownedwholly-owned subsidiary Montpelier Reinsurance Ltd. ("Montpelier Re"). Montpelier Re is a Bermuda-domiciled insurance and reinsurance company that was formed with approximately $1.0 billion in capital to respond to the then favorable underwriting and pricing environment in the reinsurance industry. Montpelier Re has initially focused on property reinsurance business. Montpelier Re is rated "A" (Excellent, the third highest of fifteen ratings) by A.M. Best. On October 15, 2002, Montpelier Re successfully completed an initial public offering and its common shares are listed on the New York Stock Exchange. White Mountains initially invested $180 million in Montpelier Re in exchange for 10.8 million common shares and warrants to acquire 4.8 million additional common shares of Montpelier.Montpelier Re.

      During the first quarter of 2004, White Mountains purchased additional warrants to acquire 2.4 million common shares of Montpelier Re from an existing warrant holder for $54 million in cash, thereby raising the total number of Montpelier Re warrants owned by White Mountains to 7.2 million.

      Also during the first quarter of 2004, White Mountains sold 4.5 million common shares of Montpelier Re to third parties. As a result of this sale, as well as changes to the composition of the Board of Directors of both Montpelier Re and White Mountains, White Mountains changed the method of accounting for its remaining common share investment in Montpelier Re as of March 31, 2004 from an equity method investment in an unconsolidated affiliate to a common equity security classified as available for sale and carried at fair value. Also during

      During the firstthird quarter of 2004,2006, White Mountains purchasedsold an additional warrants to acquire 2.45.4 million common shares of its common share investment in Montpelier from an existing warrant holder for $54.1 million in cash,Re to third parties, thereby raisingreducing the total number of such warrantsMontpelier Re common shares owned by White Mountains to 7.20.9 million. The

      At December 31, 2006 and 2005, White Mountains’ investment in Montpelier Re warrants have an exercise price of $16.67 per share (as adjusted for stock splits) and are exercisable until December 2011.common shares totaled $67 million and $167 million, respectively.


      Investments in Unconsolidated Affiliates

      Symetra Financial Corporation ("Symetra")

      On August 2, 2004, White Mountains, Berkshire and several other private investors capitalized Symetra in order to purchase the life and investment operations of Safeco Corporation for $1.35 billion. The acquired companies, which are now operating under the Symetra brand, focus mainly on group insurance, individual life insurance, structured settlements and retirement services. Symetra had an initial capitalization of approximately $1.4 billion, consisting of $1,065 million of common equity andequityand $315 million of debt. White Mountains invested $194.7$195 million in Symetra in exchange for 2.0 million common shares of Symetra. In addition, White Mountains and Berkshire each received warrants to acquire an additional 1.1 million common shares of Symetra at $100 per share. White Mountains owns approximately 19% of the outstanding common shares of Symetra and approximately 24% of Symetra on a fully-converted basis including the warrants. Three White Mountains designees serve on Symetra'sSymetra’s eight member board of directors.

              Symetra'sSymetra’s total revenues and net income for the years ended December 31, 2006 and 2005 were $1,564 million and $159 million, respectively, and $1,628 million and $146 million, respectively and for the five months ended December 31, 2004 were $701.9$702 million and $54.3$58 million, respectively. Symetra'sSymetra’s total assets and shareholders'shareholders’ equity as of December 31, 20042006 and 2005 were $22.1$20.1 billion and $1.3 billion, respectively, and $21.0 billion and $1.4 billion, respectively. Symetra’s principal insurance operating subsidiaries are rated “A” (Excellent, the third highest of fifteen ratings) by A.M. Best and “A-” (Strong, the seventh highest of twenty-one ratings) by Standard & Poor’s.

      As of December 31, 2004,2006 and 2005, White



      Mountains' Mountains’ total investment in Symetra was $248.4$307 million and $288 million, respectively, excluding $56.6($4) million and $24 million, respectively, of equity in unrealized (losses) and gains from Symetra'sSymetra’s fixed maturity investments. During 2006, White Mountains received cash dividends from Symetra of $16 million on its common share investment and $9 million on its warrant investment.


      Delos

      On August 3, 2006, White Mountains Re sold Sirius America to Delos. As part of the transaction, White Mountains invested $32 million, representing an equity interest of approximately 18% of Delos, which is accounted for as an equity method investment in an unconsolidated affiliate. As of December 31, 2006, White Mountains’ total investment in Delos was $32 million.

      Main Street America Holdings, Inc. ("MSA"(“MSA”)

      MSA is a subsidiary of National GrangeMain Street America Group Mutual Insurance Company ("NGM"Holdings, Inc. (“Main Street Group”), a New Hampshire-domiciledFlorida-domiciled mutual property and casualty insurance holding company, which insures risks located primarily in New York, Massachusetts, Connecticut, Pennsylvania, New Hampshire, Virginia and Florida. White Mountains owns owned 50% of the outstanding common stock of MSA and accounts for this investment using the equity method.from March 1998 until October 2006, when White Mountains'Mountains received a $70 million cash dividend from MSA, following which White Mountains sold its 50% common stock investment in MSA was $161.6 million and $142.8 million at December 31, 2004 and December 31, 2003, respectively. MSA's net written premiums totaled $454.5 million, $427.6 million and $357.3 million and its net income (loss) was $29.6 million, $29.3 million and ($13.2)to Main Street America Group, Inc. (“MSA Group”) for (i) $70.0 million in 2004, 20039.0% non-voting cumulative perpetual preferred stock of MSA Group, and 2002. MSA's total assets(ii) 4.9% of the common stock of MSA Group. As a result of this transaction, White Mountains no longer accounts for its investment in MSA under the equity method as of December 31, 2004 and 2003 were $978.1 million and $875.1 million and its shareholders' equity was $323.3 million and $290.4 million. The principal insurance operating subsidiaries of NGM and MSA are rated "A" (Excellent, the third highest of fifteen ratings) by A.M. Best.an investment in an unconsolidated affiliate.

      REGULATION

      United States


      REGULATION

      United States

      White Mountains'Mountains’ U.S.-based insurance and reinsurance operating subsidiaries are subject to regulation and supervision in each of the states where they are domiciled and licensed to conduct business. Generally, regulatory authorities have broad supervisory and administrative powers over such matters as licenses, standards of solvency, premium rates, policy forms, investments, security deposits, methods of accounting, form and content of financial statements, reserves for unpaid loss and LAE, reinsurance, minimum capital and surplus requirements, dividends and other distributions to shareholders, periodic examinations and annual and other report filings. In general, such regulation is for the protection of policyholders rather than shareholders. White Mountains believes that it is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial position in the event of non-compliance.

      Over the last several years most states have implemented laws that establish standards for current, as well as continued, state accreditation. In addition, the NAIC has adopted risk-based capital ("RBC"(“RBC”) standards for property and casualty insurers as a means of monitoring certain aspects affecting the overall financial condition of insurance companies. The current RBC ratios of White Mountains'Mountains’ active insurance and reinsurance operating subsidiaries are satisfactory and such ratios are not expected to result in any adverse regulatory action. White Mountains is not aware of any current recommendations by regulatory authorities that would be expected to have a material effect on its results of operations or liquidity.

      As a condition of its license to do business in certain states, White Mountains'Mountains’ insurance operating subsidiaries are required to participate in mandatory shared market mechanisms. Each state dictates the types of insurance and the level of coverage that must be provided. The most common type of shared market mechanism in which White Mountains is required to participate is an assigned risk plan. Many states operate assigned risk plans. The NYAIP and New Jersey commercial automobile insurance plans are two such shared market mechanisms in which OneBeacon is required to participate. These plans require insurers licensed within the applicable state to accept the applications for insurance policies of individuals who are unable to obtain insurance in the voluntary market. The total number of such policies an insurer is required to accept is based on its market share of voluntary business in the state. Underwriting results related to assigned risk plans are typically adverse. Accordingly, OneBeacon may be required to underwrite policies with a higher risk of loss than it would otherwise accept.

      Reinsurance facilities are another type of shared market mechanism. Reinsurance facilities require an insurance company to accept all applications submitted by certain state designated agents. The



      reinsurance facility then allows the insurer to cede some of its business to the reinsurance facility so that the facility will reimburse the insurer for claims paid on ceded business. Typically, however, reinsurance facilities operate at a deficit, which is funded through assessments against the same insurers. The Massachusetts Commonwealth Automobile Reinsurers is one such reinsurance facility in which OneBeacon is compelled to participate. As a result, OneBeacon could be required to underwrite policies with a higher risk of loss than it would otherwise voluntarily accept.

      The insurance laws of many states generally provide that property and casualty insurers doing business in those states belong to a statutory property and casualty guaranty association. The purpose of these guaranty associations is to protect policyholders by requiring that solvent property and casualty insurers pay certain insurance claims of insolvent insurers. These guaranty associations generally pay these claims by assessing solvent insurers


      proportionately based on the insurer'sinsurer’s share of voluntary written premiums in the state. While most guaranty associations provide for recovery of assessments through rate increases, surcharges or premium tax credits, there is no assurance that insurers will ultimately recover these assessments. At December 31, 2004,2006, the reserve for such assessments at OneBeacon totaled $18.3$17 million.

      Many states have laws and regulations that limit an insurer'sinsurer’s ability to exit a market. For example, certain states limit a private passenger automobile insurer'sinsurer’s ability to cancel and non-renew policies. Furthermore, certain states prohibit an insurer from withdrawing from one or more lines of insurance business in the state, unless the state regulators approve the company'scompany’s withdrawal plans. State regulators may refuse to approve such plans on the grounds that they could lead to market disruption. Such laws and regulations may restrict White Mountains'Mountains’ ability to exit unprofitable markets.

      Nearly all states have insurance laws requiring personal property and casualty insurers to file price schedules, policy or coverage forms, and other information with the state'sstate’s regulatory authority. In most cases, such price schedules and/or policy forms must be approved prior to use. While pricing laws vary from state to state, their objectives are generally to ensure that prices are adequate, not excessive and not discriminatory. For example, Massachusetts, a state where OneBeacon has a sizable presence, sets virtually all aspects of automobile insurance rates, including agent commissions. Such regulations often challenge an insurers ability to adequately price its product, which often leads to unsatisfactory underwriting results.

      White Mountains'Mountains’ U.S. insurance and reinsurance operating subsidiaries are subject to state laws and regulations that require investment portfolio diversification and that limit the amount of investment in certain categories. Non-compliance may cause non-conforming investments to be non-admitted in measuring statutory surplus and, in some instances, may require divestiture. White MountainsMountains’ investment portfolio at December 31, 20042006 complied with such laws and regulations in all material respects.

      One of the primary sources of cash inflows for the Company and certain of its intermediary holding companies is dividends received from its insurance and reinsurance operating subsidiaries. Under the insurance laws of the states under which White Mountains'Mountains’ U.S.-based insurance and reinsurance subsidiaries are domiciled, an insurer is restricted with respect to the timing or the amount of dividends it may pay without prior approval by regulatory authorities. See "Dividend Capacity"Capacity” in the "LIQUIDITY AND CAPITAL RESOURCES"RESOURCES” section of Item 7 for further discussion.

      White Mountains is subject to regulation under certain state insurance holding company acts. These regulations contain reporting requirements relating to the capital structure, ownership, financial condition and general business operations of White Mountains'Mountains’ insurance and reinsurance operating subsidiaries. These regulations also contain special reporting and prior approval requirements with respect to certain transactions among affiliates. Since the Company is an insurance holding company, the domiciliary states of its insurance and reinsurance operating subsidiaries impose regulatory application and approval requirements on acquisitions of Common SharesWhite Mountains’ common shares which may be deemed to



      confer control over those subsidiaries, as that concept is defined under the applicable state laws. Acquisition of 10% of White Mountains’ common shares, or in some states as little as 10% of White Mountains' Common Shares5%, may be deemed to confer control under the insurance laws of some jurisdictions, and the application process for approval can be extensive and time consuming.

      While the federal government does not directly regulate the insurance business, federal legislation and administrative policies affect the insurance industry. In addition, legislation has been introduced from time to time in recent years that, if enacted, could result in the federal government assuming a more direct role in the regulation of the insurance industry. A federal law enacted in 2002 and extended in 2005, the Terrorism Act, provides a "back-stop"“back-stop” to property and casualty insurers in the event of future terrorist acts perpetrated by foreign agents or interests. The law limits the industry's aggregate liability by requiring the federal government to share 90 percent of certified losses once a company meets a specific retention or deductible as determined by its prior year's direct written premiums and limits the aggregate liability to be paid by the government and industry without further action by Congress at $100 billion. In exchange for this "back-stop"“back-stop”, primary insurers are required to make coverage available to commercial insureds for losses from acts of non-domestic terrorism as specified in the Terrorism Act. OneBeacon is actively complying with the requirements of the Terrorism Act in order to ensure its ability to be reimbursed by the federal government for any losses it may incur as a result of future terrorist acts. (See "Terrorism" “Terrorism” in the "ONEBEACON" `section“ONEBEACON” section of this Item for a further discussion of the Terrorism Act.)Act). A number of additional enacted and pending legislative measures could lead to increased consolidation and increased competition for business and for capital in the financial services industry. White Mountains cannot predict whether any state or federal measures will be adopted to change the nature or scope of the regulation of the insurance business or what effect such measures may have on its insurance and reinsurance operations.


       

      Environmental cleanup of polluted waste sites is subject to both federal and state regulation. The Comprehensive Environmental Response Compensation and Liability Act of 1980 ("Superfund"(“Superfund”) and comparable state statutes govern the cleanup and restoration of waste sites by potentially responsible parties ("PRPs"(“PRPs”). These laws can impose liability for the entire cost of clean-up upon any responsible party, regardless of fault. The insurance industry in general is involved in extensive litigation regarding coverage issues arising out of the cleanup of waste sites by insured PRPs and as a result has disputed many such claims. From time to time, comprehensive Superfund reform proposals are introduced in Congress, but none has yet been enacted. At this time, it remains unclear as to whether Superfund reform legislation will be enacted or that any such legislation will provide for a fair, effective and cost-efficient system for settlement of Superfund related claims. The NICO Cover includes coverage for such exposures at OneBeacon; however, there can be no assurance that the coverage provided under the NICO Cover will ultimately prove to be adequate.

      Sweden

      Sirius International is subject to regulation and supervision by the Swedish Financial Supervisory Authorities (the “FSA”). As Sweden is a member of the European Union (the “EU”), this supervision covers all locations within the EU. Generally, the FSA has broad supervisory and administrative powers over such matters as licenses, standard of solvency, investments, method of accounting, form and content of financial statements, minimum capital and surplus requirements, annual and other report filings. In general, such regulation is for the protection of policyholders rather than shareholders. White Mountains believes that it is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial position in the event on non-compliance.


      Sweden

      In accordance with provisions of Swedish law, Sirius International can voluntarilyis permitted to transfer up to the full amount ofits pretax earnings, or a portion thereof,pre-tax income, subject to certain limitations, into an untaxed reserve referred to as a safety reserve. The safety reserve, is a Swedish regulatory concept that has no equivalent under GAAP. Accordingly, underwhich equaled $1.3 billion at December 31, 2006. Under GAAP, an amount equal to Sirius International'sthe safety reserve, of $1.1 billion at December 31, 2004, net of the related deferred tax liability established at the statutory Swedish tax rate of 28%, is classified as shareholders’ equity. Generally, this deferred tax liability is only required to be paid by Sirius International if it fails to maintain predetermined levels of premium writings and loss reserves in future years. As a result of the indefinite deferral of these taxes, Swedish regulatory authorities do not apply any taxes to the safety reserve when calculating solvency capital under Swedish insurance regulations.




      RATINGS
      Accordingly, under local statutory requirements, an amount equal to the deferred tax liability on Sirius International’s safety reserve ($351 million at December 31, 2006) is included in solvency capital.

      RATINGS

      Insurance and reinsurance companies are evaluated by various rating agencies in order to measure each company'scompany’s financial strength. Higher ratings generally indicate financial stability and a stronger ability to pay claims. A.M. Best currently rates OneBeacon's, White Mountains Re's and Esurance's principal operating insurance subsidiaries "A" (Excellent, the third highest of fifteen ratings) and NFU "A-" (Excellent, the fourth highest of fifteen ratings). White Mountains believes that strong ratings are important factors in the marketing of insurance and reinsurance products to agents and consumers and ceding companies.

      Rating agencies also evaluate the general creditworthiness of debt securities issued by companies. Their ratings are then used by existing or potential investors to assess the likelihood of repayment on a particular debt issue. White Mountains believes that strong debt ratings are important factors that provide better financial flexibility when issuing new debt or restructuring existing debt.

      32




      The following table presents the financial strength ratings assigned to White Mountains’ principal insurance and reinsurance operating subsidiaries and the debt ratings for Fund American’s Senior Notes as of February 28, 2007:

      Sirius

      Fund American

      OneBeacon

      Folksamerica Re

      International

      Esurance

      Senior Notes (5)

      A.M. Best

      Rating (1)

      “A” (Excellent)

      “A-” (Excellent)

      “A” (Excellent)

      “A” (Excellent)

      “bbb” (Very Good)

      Outlook

      Stable

      Stable

      Stable

      Stable

      Stable

      Standard & Poor’s

      Rating (2)

      “A” (Strong)

      “A-” (Strong)

      “A-” (Strong)

      No Rating

      “BBB” (Adequate)

      Outlook

      Stable

      Stable

      Stable

      N/A

      Stable

      Moody’s

      Rating (3)

      “A2” (Good)

      “A3” (Good)

      “A3” (Good)

      “A2” (Good)

      “Baa2” (Medium Grade)

      Outlook

      Stable

      Stable

      Stable

      Stable

      Stable

      Fitch

      Rating (4)

      “A” (Strong)

      “A-” (Strong)

      “A-” (Strong)

      “A” (Strong)

      “BBB” (Good)

      Outlook

      Stable

      Stable

      Stable

      Stable

      Stable



      (1)
                   “A” is the third highest of fifteen financial strength ratings, “A-” is the fourth highest of fifteen financial strength ratings and “bbb” is the EMPLOYEES
      ninth highest of twenty-two creditworthiness ratings assigned by A.M. Best.

      (2)             “A” is the sixth and “A-” is the seventh highest of twenty-one financial strength ratings and “BBB” is the ninth highest of twenty-two creditworthiness ratings assigned by Standard & Poor’s.

      (3)             “A2” is the sixth and “A3” is the seventh highest of twenty-one financial strength ratings and “Baa2” is the ninth highest of twenty-one creditworthiness ratings assigned by Moody’s.

      (4)             “A” is the sixth and “A-” is the seventh highest of twenty-four financial strength ratings and “BBB” is the ninth highest of twenty-three creditworthiness ratings assigned by Fitch.

      (5)             The Senior Notes issued by Fund American are fully and unconditionally guaranteed as to the payment of principal and interest by the Company.

      EMPLOYEES

      As of December 31, 2004,2006, White Mountains employed 5,0305,292 persons (consisting of 6536 persons at the Company and its intermediate holding companies, 3,8683,243 persons at OneBeacon, 542546 persons at White Mountains Re, 5421,415 persons at Esurance, 29 persons at WM Advisors, 5 persons at WM Life Re, 5 persons at Galileo and 13 persons at the International American Group companies). Management believes that White Mountains has satisfactory relations with its employees.


      AVAILABLE INFORMATION

      The Company is subject to the informational reporting requirements of the Exchange Act. In accordance therewith, the Company files reports, proxy statements and other information with the SEC. These documents are available at www.whitemountains.comwww.whitemountains.com. shortly after such material is electronically filed with or furnished to the SEC. In addition, the Company'sCompany’s code of business conduct and ethics as well as the various charters governing the actions of certain of the Company'sCompany’s Committees of its Board of Directors, including its Audit Committee, Compensation Committee and its Nominating and Governance Committee, are available at www.whitemountains.com.

      The Company will provide to any shareholder, upon request and without charge, copies of these documents (excluding any applicable exhibits unless specifically requested). Written or telephone requests should be directed to the Corporate Secretary, White Mountains Insurance Group, Ltd., 80 South Main Street, Hanover, New Hampshire 03755, telephone number (603) 640-2200. Additionally, all such documents are physically available at the Company'sCompany’s registered office at Clarendon House, 2 Church Street, Hamilton, HM 11 Bermuda.


      Item 1A.                     Risk Factors

      The information contained in this report may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21 E of the Securities Exchange Act of 1934. See “FORWARD-LOOKING STATEMENTS” (page 88) for specific important factors that could cause actual results to differ materially from those contained in forward-looking statements. The Company’s actual future results and trends may differ materially depending on a variety of factors including, but not limited to, the risks and uncertainties discussed below.

      Unpredictable catastrophic events could adversely affect our financial condition or results of operations.

      We write insurance and reinsurance policies that cover catastrophic events. Our policies cover unpredictable natural and other disasters, such as hurricanes, windstorms, earthquakes, floods, fires and explosions. In recent years, the frequency of major weather-related catastrophes has increased. Our exposure to catastrophic windstorm damage in the Northeastern United States is the largest single natural risk to our business. We also have significant exposure to a major California earthquake and windstorm damage in Northern Europe, the United States Atlantic Coast (i.e., Delaware to Florida) and the United States Gulf Coast region (i.e., Florida to Texas). In addition, we are exposed to losses from terrorist attacks, such as the attacks on the United States on September 11, 2001.

      The extent of losses from a catastrophe is a function of both the total amount of insured exposure in the area affected by the event and the severity of the event. Increases in the value of insured property, the effects of inflation and changes in cyclical weather patterns may increase the severity of claims from catastrophic events in the future. Claims from catastrophic events could reduce our earnings and cause substantial volatility in our results of operations for any fiscal quarter or year and adversely affect our financial condition. Our ability to write new insurance and reinsurance policies could also be impacted as a result of corresponding reductions in our surplus levels.

      We manage our exposure to catastrophic losses by limiting the aggregate insured value of policies in geographic areas with exposure to catastrophic events and by estimating a PML for many different catastrophe scenarios and by buying reinsurance. To manage and analyze aggregate insured values and PML, we use a variety of tools and analyses, including catastrophe modeling software packages. Our estimates of PML are dependent on many variables, including assumptions about the demand surge and storm surge, loss adjustment expenses, insurance-to-value and storm intensity in the aftermath of weather-related catastrophes utilized to model the event, the relationship of the actual event to the modeled event and the quality of data provided to us by ceding companies (in the case of our reinsurance operations). Accordingly, if our assumptions about the variables are incorrect, the losses we might incur from an actual catastrophe could be materially higher than our expectation of losses generated from modeled catastrophe scenarios and our financial condition and results of operations could be materially adversely affected.

      We may not be able to successfully alleviate risk through reinsurance and retrocessional arrangements. Additionally, we may be unable to collect all amounts due from our reinsurers under our existing reinsurance and retrocessional arrangements.

      We attempt to limit our risk of loss through reinsurance and retrocessional arrangements. Retrocessional arrangements refer to reinsurance purchased by a reinsurer to cover its own risks assumed from primary ceding companies. The availability and cost of reinsurance and retrocessional protection is subject to market conditions, which are outside of our control. As a result, we may not be able to successfully alleviate risk through these arrangements, which could have a material adverse effect on our financial condition and results of operations.

      We are not relieved of our obligation to our policyholders or ceding companies by purchasing reinsurance. Accordingly, we are subject to credit risk with respect to our reinsurance and retrocessions in the event that a reinsurer is unable to pay amounts owed to us as a result of a deterioration in its financial condition. A number of reinsurers in the industry experienced such a deterioration in the aftermath of the 2001 terrorist attacks and the active 2005 hurricane season. It is possible that one or more of our reinsurers will be significantly adversely affected by future significant loss events, causing them to be unable to pay amounts owed to us. We also may be unable to recover amounts due under our reinsurance and retrocessional arrangements if our reinsurers choose to withhold payment due to a dispute or other factors beyond our control.


      Our loss reserves maybe inadequate to cover our ultimate liability for losses and as a result our financial results could be adversely affected.

      We are required to maintain adequate reserves to cover our estimated ultimate liabilities for loss and loss adjustment expenses. Loss and LAE reserves are typically comprised of (1) case reserves for claims reported and (2) IBNR reserves for losses that have occurred but for which claims have not yet been reported, or IBNR, which include a provision for expected future development on case reserves. These reserves are estimates based on actuarial and statistical projections of what we believe the settlement and administration of claims will cost based on facts and circumstances then known to us. Because of the uncertainties that surround estimating loss and LAE reserves, we cannot be certain that our reserves are adequate and actual claims and claim expenses paid might exceed our reserves due to the uncertainties that surround estimating loss and LAE reserves. If we determine in the future that our reserves are insufficient to cover our actual loss and LAE, we would have to strengthen our reserves, which could have a material adverse effect on our financial condition and results of operations.

      For further discussion of our loss and LAE, including our asbestos and environmental reserves, see “Loss and Loss Adjustment Expenses” in “CRITICAL ACCOUNTING ESTIMATES” in Item 7.

      We may not maintain favorable financial strength or creditworthiness ratings which could adversely affect our ability to conduct business.

      Third party rating agencies assess and rate the financial strength, including claims-paying ability, of insurers and reinsurers. These ratings are based upon criteria established by the rating agencies and are subject to revision at any time at the sole discretion of the agencies. Some of the criteria relate to general economic conditions and other circumstances outside the rated company’s control. These financial strength ratings are used by policyholders, agents and brokers as an important means of assessing the suitability of insurers as business counterparties and have become an increasingly important factor in establishing the competitive position of insurance companies. These financial strength ratings do not refer to our ability to meet non-insurance obligations and are not a recommendation to purchase or discontinue any policy or contract issued by us or to buy, hold or sell our securities.

      Rating agencies periodically evaluate us to confirm that we continue to meet the criteria of the ratings previously assigned to us. See “RATINGS” in Item 1 for a summary of financial strength ratings on our significant subsidiaries and creditworthiness ratings on our Senior Notes. A downgrade or withdrawal of our financial strength ratings could severely limit or prevent our insurance subsidiaries from writing new insurance or reinsurance policies or renewing existing insurance policies, which could have a material adverse effect on our financial condition and results of operations. A downgrade or withdrawal of our creditworthiness ratings could severely limit our ability to raise new debt or could make new debt more costly and/or have more restrictive conditions.

      Additionally, the majority of White Mountains Re’s assumed reinsurance contracts contain optional cancellation, commutation and/or funding provisions that would be triggered if A.M. Best and/or S&P were to downgrade the financial strength ratings of either Folksamerica Re or Sirius International below “A-”. A client may choose to exercise these rights depending on, among other things, the reasons for such a downgrade, the extent of the downgrade, the prevailing market conditions, the degree of unexpired coverage, and the pricing and availability of replacement reinsurance coverage. We cannot predict in advance how many of our clients would actually exercise such rights or what effect such cancellations would have on our financial condition, results of operations and/or liquidity, but such an effect could be materially adverse.

      Our debt, preferred stock and related service obligations could adversely affect our business.

      As of December 31, 2006, we had approximately $1,108 million face value of indebtedness and $320 million face value of mandatorily redeemable preferred stock outstanding. In connection with the OneBeacon Offering, we established and funded trusts that are solely dedicated to the payment of dividends and redemption amounts of our outstanding mandatorily redeemable preferred stock with a deposit of U.S. government securities.

      Our ability to meet our debt and related service obligations will depend on our future performance, which will be affected by financial, business, economic and other factors. We will not be able to control many of these factors, such as economic conditions and governmental regulation. We cannot be certain that our earnings will be sufficient to allow us to pay the principal and interest on our debt and meet our other obligations. If we do not have enough cash, we may be required to refinance all or part of our existing debt, sell assets, borrow more cash or sell equity. We cannot assure you that we will be able to accomplish any of these alternatives on terms acceptable to us, if at all.


      We could incur additional indebtedness and issue additional preferred stock in the future. To the extent new debt, new preferred stock and other obligations are added to our and our subsidiaries’ current debt and preferred stock levels, the risks described in the previous paragraph would increase.

      Our investment portfolio may suffer reduced returns or losses which could adversely affect our results of operations and financial condition. Any increase in interest rates or volatility in the equity and debt markets could result in significant losses in the fair value of our investment portfolio.

      Our investment portfolio consists of fixed maturity securities, short-term investments, common equity securities and other investments such as hedge funds, limited partnerships and private equities. Our investment selections are designed to maximize after-tax, total risk-adjusted return over the long term; however, investing entails substantial risks. We cannot assure you that we will achieve our investment objectives, and our investment performance may vary substantially over time.

      Investment returns are an important part of our growth in book value, and fluctuations in the fixed income or equity markets could impair our results of operations or financial condition. A significant period of time normally elapses between the receipt of insurance premiums and the disbursement of insurance claims. During this time, we generate investment income, consisting primarily of interest earned on fixed maturity investments and dividends earned on equity securities, by investing our capital as well as insurance premiums allocated to support unpaid loss and LAE reserves. We also recognize unrealized investment gains and losses on the securities we hold in our investment portfolio and we generate investment gains and losses from sales of securities from our investment portfolio.

      The investment income and fair market value of our investment portfolio are affected by general economic and market conditions, including fluctuations in interest rates and volatility in the stock market. Interest rates are highly sensitive to many factors, including governmental monetary policies, domestic and international economic and political conditions and other factors beyond our control. Although we attempt to manage the risks of investing in a changing interest rate environment, we may not be able to effectively mitigate interest rate sensitivity. In particular, a significant increase in interest rates could result in significant losses, realized or unrealized, in the fair value of our investment portfolio and, consequently, could have an adverse affect on our results of operations. In addition, we are exposed to changes in the level or volatility of equity prices that affect the value of securities or instruments that derive their value from a particular equity security, a basket of equity securities or a stock index. These conditions are outside of our control and could adversely affect the value of our investments and our results of operations and financial condition.

      The property and casualty insurance and reinsurance industries are highly competitive and we may not be able to compete effectively in the future.

      The property and casualty insurance and reinsurance industries are highly competitive and have, from time to time, experienced severe price competition. OneBeacon competes with numerous regional and national insurance companies, including The St. Paul Travelers Companies, Inc., Zurich Financial Services Group, CNA Financial Corporation, Hartford Financial Services Group, Inc., The Hanover Insurance Group, Inc., W.R. Berkley Corporation, The Chubb Corporation, The Progressive Corporation, Allstate Insurance Company, Liberty Mutual, American International Group, Inc. and the regional Farm Bureaus. White Mountains Re competes with numerous reinsurance companies throughout the world, including ACE Limited, Arch Capital Group Ltd., Endurance Specialty Holdings Ltd., Everest Re Group, Ltd., Hannover Ruckversicherung AG, Lloyd’s of London, Munich Re Group, Partner Re Ltd., Platinum Underwriters Holdings Ltd., Renaissance Re Holdings Ltd., Swiss Re Group, Transatlantic Holdings, Inc., XL Capital Ltd and General Reinsurance Corporation. Esurance competes with national and regional personal automobile insurance companies, though Esurance’s main competition comes from other direct writers like Progressive, GEICO, and 21st Century. Many of these competitors have greater financial, marketing and management resources than we do and have established long-term and continuing business relationships throughout the insurance industry, which can be a significant competitive advantage for them.

      The agents upon whom OneBeacon relies compete with direct writers of insurance, who are often able to offer substantial discounts in pricing as compared to OneBeacon’s insurance products. If OneBeacon’s agents experience increased competition from direct writers of insurance, we in turn could be adversely affected if OneBeacon’s agents are unable to maintain a competitive position in their respective markets. In addition, substantial new capital and competitors have entered the reinsurance market in recent months, and we expect to face further competition in the future. If we are unable to maintain our competitive position, our insurance and reinsurance businesses may be adversely affected and we may not be able to compete effectively in the future.


      We may suffer losses from unfavorable outcomes from litigation and other legal proceedings.

      In the ordinary course of business, we are subject to litigation and other legal proceedings as part of the claims process, the outcomes of which are uncertain. We maintain reserves for these legal proceedings as part of our loss and LAE reserves. We also maintain separate reserves for legal proceedings that are not related to the claims process. In the event of an unfavorable outcome in one or more legal matters, our ultimate liability may be in excess of amounts we have currently reserved for and such additional amounts may be material to our results of operations and financial condition. For a description of our material legal proceedings, see “Item 3. Legal Proceedings.”

      As industry practices and legal, judicial, social and other conditions change, unexpected and unintended issues related to claims and coverage may emerge. These issues may adversely affect our financial condition and results of operations by either extending coverage beyond our underwriting intent or by increasing the number and size of claims. In some instances, these changes may not become apparent until some time after we have issued insurance and reinsurance contracts that are affected by the changes.

      Regulation may restrict our ability to operate.

      The insurance and reinsurance industries are subject to extensive regulation under U.S., state and foreign laws. Governmental agencies have broad administrative power to regulate many aspects of the insurance business, which include premium rates, marketing practices, advertising, policy forms and capital adequacy. These governmental agencies are concerned primarily with the protection of policyholders rather than shareholders. Insurance laws and regulations impose restrictions on the amount and type of investments, prescribe solvency standards that must be met and maintained and require the maintenance of reserves. In our insurance underwriting, we rely heavily upon information gathered from third parties such as credit report agencies and other data aggregators. The use of this information is also highly regulated and any changes to the current regulatory structure could materially affect how we underwrite and price premiums.

      Changes in laws and regulations may restrict our ability to operate and/or have an adverse effect upon the profitability of our business within a given jurisdiction. For example, legislation has been recently passed in Florida that significantly changes the reinsurance protection provided by the Florida Hurricane Catastrophe Fund to companies that write business in Florida. The new legislation also contains a provision that will disallow insurers that write homeowners insurance elsewhere in the United States to write automobile insurance in Florida unless they also write homeowners insurance in Florida. The impact of the new legislation, which could be adverse, upon White Mountains’ insurance and reinsurance business in Florida cannot be determined until regulations interpreting the legislation are promulgated. In addition, state and Federal legislation has been proposed to establish catastrophe funds and underwriting in coastal areas which could impact our business.

      Government authorities are continuing to investigate the insurance and reinsurance industries, which may adversely affect our business.

      Recently, the insurance industry has been heavily scrutinized by various regulatory bodies, including State Attorneys General and state insurance departments, for alleged illegal conduct surrounding a number of topics, including producer compensation arrangements and the sale and use of finite reinsurance.

      During 2005 and 2004, OneBeacon received subpoenas from the Attorneys General of Massachusetts, New York and Connecticut requesting documents and seeking information relating to the conduct of business between insurance brokers and OneBeacon. Some of our other subsidiaries have also received information requests from various state insurance departments regarding producer compensation arrangements. We have cooperated with all of these subpoenas and information requests. We believe these requests to be part of the industry-wide investigation regarding industry sales practices. These investigations of the insurance and reinsurance industries, whether involving our companies specifically or not, together with any legal or regulatory proceedings related settlement, or industry reforms, may materially adversely affect our business and future prospects.


      In recent years we have successfully created shareholder value through acquisitions and dispositions of insurance and reinsurance entities. We may not be able to continue to create shareholder value through such transactions in the future.

      In the past several years, we have completed numerous acquisitions and dispositions of insurance and reinsurance entities, many of which have contributed significantly to our growth in tangible book value. Failure to identify and complete future acquisition and disposition opportunities could limit our ability to achieve our target returns. Even if we were to identify and complete future acquisition opportunities, there is no assurance that such acquisitions will ultimately achieve their anticipated benefits.

      We may become subject to taxes in Bermuda after 2016.

      We may become subject to taxes in Bermuda after 2016. We have received a standard assurance from the Bermuda Minister of Finance, under Bermuda’s Exempted Undertakings Tax Protection Act 1966, that if any legislation is enacted in Bermuda that would impose tax computed on profits or income, or computed on any capital asset, gain or appreciation, or any tax in the nature of estate duty or inheritance tax, then the imposition of any such tax will not be applicable to us or to any of our operations or our shares, debentures or other obligations until March 28, 2016. Given the limited duration of the Minister of Finance’s assurance, we cannot be certain that we will not be subject to any Bermuda tax after March 28, 2016. In the event that we become subject to any Bermuda tax after such date, it would have a material adverse effect on our financial condition and results of operations.

      Changes in tax laws or tax treaties may cause more of the income of certain non-U.S. companies in our group to become subject to taxes in the United States.

      The taxable income of our U.S. subsidiaries is subject to U.S. Federal, state and local income tax and other taxes. The income of the non-U.S. companies in our group is generally not subject to tax in the United States other than withholding taxes on interest and dividends. Certain of our non-U.S. companies are eligible for the benefits of tax treaties between the United States and other countries. We believe our non-U.S. companies will continue to be eligible for treaty benefits. However, it is possible that factual changes or changes to U.S. tax laws or changes to tax treaties that presently apply to our non-U.S. companies could impact income subject to tax in the United States. Similarly, changes to the applicable tax laws, treaties or regulations of other countries could subject the income of members of our group to higher rates of tax outside the United States.

      We have significant foreign operations that expose us to certain additional risks, including foreign currency risks and political risk.

      White Mountains Re, in particular Sirius International, conducts a significant portion of its business outside of the United States. As a result, a substantial portion of our assets, liabilities, revenues and expenses are denominated in currencies other than the U.S. dollar and are therefore subject to foreign currency risk. Our foreign currency risk cannot be eliminated entirely and significant changes in foreign exchange rates may adversely affect our financial condition or our results of operations.

      Our foreign operations are also subject to legal, political and operational risks that may be greater than those present in the United States. As a result, our operations at these foreign locations could be temporarily or permanently disrupted.

      We depend on our key personnel to manage our business effectively and they may be difficult to replace.

      Our performance substantially depends on the efforts and abilities of our management team and other executive officers and key employees. Furthermore, much of our competitive advantage is based on the expertise, experience and know-how of our key management personnel. We do not have fixed term employment agreements with any of our key employees nor key man life insurance and the loss of one or more of these key employees could adversely affect on our business, results of operations and financial condition. Our success also depends on the ability to hire and retain additional personnel. Difficulty in hiring or retaining personnel could adversely affect our results of operations and financial condition.


      Bermuda law differs from the laws in effect in the United States and may afford less protection to shareholders.

      We are organized under the laws of Bermuda, and a portion of our assets will be located outside the United States. As a result, it may not be possible for our shareholders to enforce court judgments obtained in the United States against us based on the civil liability provisions of the Federal or state securities laws of the United States, either in Bermuda or in countries other than the United States where we will have assets. In addition, there is some doubt as to whether the courts of Bermuda and other countries would recognize or enforce judgments of U.S. courts obtained against us or our directors or officers based on the civil liabilities provisions of the Federal or state securities laws of the United States or would hear actions against us or those persons based on those laws.

      Our corporate affairs are governed by the Companies Act 1981 of Bermuda, or the Companies Act. The Companies Act differs in some material respects from laws generally applicable to U.S. corporations and shareholders, including the provisions relating to interested directors, amalgamations, mergers and acquisitions, takeovers, shareholder lawsuits and indemnification of directors. Generally, the duties of directors and officers of a Bermuda company are owed to the company only. Shareholders of Bermuda companies generally do not have rights to take action against directors or officers of the company and may only do so in limited circumstances. Class actions and derivative actions are generally not available to shareholders under Bermuda law. The Bermuda courts, however, would ordinarily be expected to permit a shareholder to commence an action in the name of a company to remedy a wrong to the company where the act complained of is alleged to be beyond the corporate power of the company or illegal, or would result in the violation of the company’s memorandum of association or bye-laws. Furthermore, consideration would be given by a Bermuda court to acts that are alleged to constitute a fraud against the minority shareholders or, for instance, where an act requires the approval of a greater percentage of the company’s shareholders than that which actually approved it.

      When the affairs of a company are being conducted in a manner that is oppressive or prejudicial to the interests of some part of the shareholders, one or more shareholders may apply to the Supreme Court of Bermuda, which may make such order as it sees fit, including an order regulating the conduct of the company’s affairs in the future or ordering the purchase of the shares of any shareholders by other shareholders or by the company. Additionally, under our bye-laws and as permitted by Bermuda law, each shareholder has waived any claim or right of action against our directors or officers for any action taken by directors or officers in the performance of their duties, except for actions involving fraud or dishonesty. In addition, the rights of our shareholders and the fiduciary responsibilities of our directors under Bermuda law are not as clearly established as under statutes or judicial precedent in existence in jurisdictions in the United States, particularly the State of Delaware. Therefore, our shareholders may have more difficulty protecting their interests than would shareholders of a corporation incorporated in a jurisdiction within the United States.

      Item 1B.                 Unresolved Staff Comments

      As of the date of this report, the Company had no unresolved comments from the Commission staff regarding its periodic or current reports under the Exchange Act.


      Item 2.                          Properties

      The Company maintains two professional offices in Hamilton, Bermuda which serve as its headquarters and its registered office. The Company’s principal executive office is in Hanover, New Hampshire. In addition, the Company maintains a professional office in Guilford, Connecticut, which houses its investment and corporate finance functions.

      The United States headquarters of OneBeacon is located in Canton, Massachusetts, while its principal executive office is located in Minnetonka, Minnesota. OneBeacon also maintains branch offices in various cities throughout the United States.

      White Mountains Re'sRe’s headquarters is in Hamilton, Bermuda with an additionaland its principal executive office is located in New Jersey.Guilford, Connecticut. Folksamerica is headquartered in New York, New York with branch offices in various cities throughout the United States.States and in Toronto, Canada. Sirius International is headquartered in Stockholm, Sweden with various branch offices in Europe and Asia. WMUWMRUS maintains offices in Dublin, Ireland and Hamilton, Bermuda. The home office of OneBeacon is located in Boston, Massachusetts, with branch offices in various cities throughout the United States. Esurance is headquartered in San Francisco, California with various offices throughout the United States. In addition, the Company maintains a professional office in Hanover, New Hampshire which serves as its principal executive office, and an office in Guilford, Connecticut, which houses its investment and corporate finance functions.


      The Company'sCompany’s headquarters, registered office, principal executive office and investment and corporate finance officeoffices are leased. Sirius International'sInternational’s home office in Sweden and substantially all of its branch offices, as well as WMU'sWMRUS’s offices in Ireland and Bermuda, are leased. Folksamerica'sFolksamerica’s home office and its branch offices are leased as well. TheOneBeacon owns its home officeoffice. Most of OneBeacon and most of itsOneBeacon’s branch offices are leased with the exception of branch offices located in New York, whichYork. Esurance’s home office and its branch offices are owned by OneBeacon. Certain leased and owned OneBeacon office locations have been leased or subleased to



      Liberty Mutual in connection with the Liberty Agreement for a period of no more than three years.leased. Management considers its office facilities suitable and adequate for its current level of operations.


      Item 3.                          Legal Proceedings

      White Mountains, and the insurance and reinsurance industry in general, are subject to litigation and arbitration in the normal course of business. Other than those items listed below, White Mountains was not a party to any material litigation or arbitration other than as routinely encountered in claims activity, none of which is expected by management to have a material adverse effect on its financial condition and/or cash flows.

      On November 1, 2001, OneBeacon transferred its regional agency business, agents and operations in 42 states and the District of Columbia to Liberty Mutual Insurance Group (“Liberty Mutual”) pursuant to a renewal rights agreement (the “Liberty Agreement”), which expired on October 31, 2003. OneBeacon is in a dispute with Liberty Mutual over certain costs Liberty Mutual claims it incurred in connection with the Liberty Agreement. Liberty Mutual asserts that these costs are part of unallocated loss adjustment expenses (“ULAE”) due Liberty Mutual under the Liberty Agreement. Liberty Mutual further asserts that ULAE on charges previously billed to and settled by OneBeacon since the inception of the Liberty Agreement should be retroactively recast in addition to changing the calculation of ULAE charges for the period not yet settled. OneBeacon believes that the recast charges, which are significantly higher than prior ULAE calculations, and the calculation of ULAE charges for the period not yet settled are inconsistent with the terms of the Liberty Agreement and with standard industry definitions of ULAE. The amount of additional ULAE Liberty Mutual claims that it incurred under the Liberty Agreement totals approximately $68 million. Liberty Mutual has netted amounts billed under the ULAE dispute against amounts otherwise payable to OneBeacon. As of December 31, 2006, OneBeacon has recorded in its loss and LAE reserves an estimate of ULAE expenses due Liberty Mutual on a basis that it believes is consistent with the terms of the Liberty Agreement and with standard industry definitions of ULAE. In November 2004, January 2006, Liberty Mutual initiated an arbitration proceeding against OneBeacon with respect to this dispute, the ULAE Arbitration. The initial organizational meeting on the ULAE arbitration was held in February 2007 and the final hearing is scheduled for April 2008.

      In September 2006, OneBeacon initiated an arbitration against Liberty Mutual (and Peerless Insurance Company) seeking payment of approximately $57 million relating to reinsurance premiums, ceding commissions, recoveries and commutations due to OneBeacon from Liberty Mutual pursuant to the terms and conditions of the rewritten indemnity reinsurance agreement. To date, Liberty Mutual has refused to pay, asserting that it is entitled to an offset against the ULAE amounts disputed by OneBeacon and subject to the ULAE arbitration. The parties are in the process of selecting an arbitration panel and the dates for the arbitration hearing have not yet been scheduled. In January 2007, this arbitration was consolidated into the ULAE arbitration.

      OneBeacon Insurance Group received a subpoena fromLLC and OBIC also have asserted claims against Liberty Mutual (and Peerless Insurance Company) in the Attorney GeneralCourt of Common Pleas for Philadelphia County, Pennsylvania, or the Court, in which they assert that Liberty Mutual (and Peerless Insurance Company) breached the Pre-Closing Administrative Services Agreement, handled claims files negligently, breached fiduciary duties and were unjustly enriched. The Court has stayed those claims pending the resolution of the Statearbitration between OBIC and Liberty Mutual for breach of New York requesting documentscontract. The arbitration hearing commenced in November 2006 and seeking information relatingwill continue in May 2007.

      OneBeacon believes that its loss and LAE reserves are sufficient to the conductcover reasonably anticipated outcomes of business between insurance brokers and OneBeacon. Subsidiaries of the Company have also received information requests from various state insurance departments regarding producer compensation arrangements. White Mountains believes these requests are part of the ongoing, industry-wide investigation regarding industry sales practices.

              On May 15, 2002, The Robert Plan Corporation and several of its subsidiaries filed a lawsuit against the Company, certain of its subsidiaries and several individuals employed by the subsidiaries. The suit alleges that the defendants misappropriated confidential information of the plaintiffs and used such information to enter into the New York automobile assigned risk business in direct competitionall related disputes with the plaintiffs. The plaintiffs have recently increased their damages demand from $66 million to approximately $185 million, which they allege represents two years of their lost profits in the subject business. White Mountains, its named subsidiaries and employees do not believe they engaged in any improper or actionable conduct. White Mountains and its subsidiaries have no reason to believe they have any liability to The Robert Plan Corporation and intend to vigorously defend the lawsuit. In addition, OneBeacon has brought a counterclaim against the plaintiffs that it believes to be meritorious. OneBeacon is seeking compensatory damages of $9 million as a result of the breach by the plaintiffs of the LAD servicing contract that OneBeacon had entered into with them.Liberty Mutual.

              On January 30, 2001, an action was filed in Los Angeles on behalf of Sierra National Life Insurance Holdings, Inc. ("Sierra Holdings", which is not related to the Sierra Group, as previously defined), a dissolved corporation in which White Mountains held a 28.8% interest, against Credit Lyonnais, S.A. and other parties who were the successful bidders for the assets of Executive Life Insurance Company ("ELIC"), a California insurer, in the 1991 sale of those assets conducted by the California Commissioner of Insurance. Sierra Holdings alleged that defendants' acquisition violated both federal and state law and that, but for defendants' wrongful acts, it would have been chosen to purchase ELIC's assets. Sierra Holdings settled its claims against Credit Lyonnais and certain other defendants for a total of $87 million. After expenses, White Mountains share of the settlement proceeds was approximately $15 million. In addition, a default judgment regarding liability was entered at trial against another defendant, Maaf Assurances, SA, a French mutual insurer. Sierra Holdings is reviewing its options in pursuing damages against Maaf. Finally, in certain circumstances, Sierra Holdings may be entitled to additional amounts from any settlements or judgments resulting from the ongoing lawsuit by the California Commissioner of Insurance against another defendant, Artemis SA.

              In August 2000, Aramarine Brokerage, Inc. ("Aramarine"), a former insurance broker of OneBeacon's, filed a lawsuit alleging that OneBeacon had wrongfully terminated its business relationship with Aramarine. The suit originally claimed $410 million in compensatory damages for lost commissions, although Aramarine has recently reduced its demand to $158 million. OneBeacon does not believe it has engaged in any actionable conduct. During 2004, OneBeacon prevailed on a motion for summary judgment to dismiss the plaintiff's claim. OneBeacon expects the plaintiff to appeal the summary judgment upon resolution of OneBeacon's counterclaim for return commission.




      Item 4.                          Submission of Matters to a Vote of Security Holders

              At the Company's 2004 Annual General Meeting of Members, which was held on October 21, 2004 in Hamilton, Bermuda, the Company's Members approved proposals (as further described in the Company's 2004 Proxy Statement) calling for the Election of fiveThere were no matters submitted to a vote of the Company's directors to Class I ("Proposal I"),Company’s shareholders during the Electionfourth quarter of Directors of Sirius International Insurance Corporation ("Proposal II"), the Election of Directors of Fund American Reinsurance Company, Ltd. and Scandinavian Reinsurance Company Ltd. ("Proposal III"), the Election of Directors of any new non-United States operating subsidiary ("Proposal IV") and the Approval of Appointment of PricewaterhouseCoopers as the Company's Independent Registered Accounting Firm ("Proposal V"). As of August 27, 2004, the "Record Date" for the 2004 Annual Meeting, a total of 10,769,451 Common Shares were eligible to vote.2006.


              With respect to Proposals I, II, III and IV, 6,386,624 votes, 6,559,440 votes, 6,557,514 and 6,597,508 votes were cast in favor of the proposals, respectively, and 264,527 votes, 91,711 votes, 93,637 votes and 53,643 votes were withheld, respectively. With respect to Proposal V, 7,800,774 votes were cast in favor of the proposal, 5,971 votes were cast against the proposal and 5,952 votes abstained. These results represent the number of Common Shares voted after taking into consideration the voting cut-back of all holders with 10% or more voting control in accordance with Bye-law 47 of the Company's Bye-laws

              In connection with Proposal I, Bruce R. Berkowitz, Steven E. Fass, Edith E. Holiday, Joseph S. Steinberg and Lowndes A. Smith were elected to the Company's Board of Directors with terms ending in 2007. In connection with Proposal II, Messrs. Lars Ek, Fass, Gert Lindberg and Goran Thorstensson were elected to the Board of Directors of Sirius International Insurance Corporation. In connection with Proposal III, Messrs. Fass, Anders Henriksson, Mark Kaplen, Michael E. Maloney, Thorstensson and Michael E. Tyburski were elected to the Board of Directors of Fund American Reinsurance Company, Ltd. and Scandinavian Reinsurance Company Ltd. In connection with Proposal IV, Messrs. Barrette and Fass were elected to any new non-United States operating subsidiary that may be formed by the Company in the future.


      Executive Officers of the Registrant and its Subsidiaries (As of March 1, 2005)
      February 28 2007)

      Name

       Position
       Age
       Executive officer
      since

       

      Position

       

      Age

       

      Executive officer since

       

      Raymond Barrette President and CEO 54 1997

       

      Chairman and CEO

       

      56

       

      2007

       

      John P. Cavoores Managing Director, President and CEO of OneBeacon 47 2002
      Charles B. Chokel Managing Director of White Mountains Capital, Inc. 51 2002

       

      Managing Director and Chief Financial Officer of White Mountains Re

       

      53

       

      2002

       

      Steven E. Fass President and CEO of White Mountains Re 59 2002
      David T. Foy Executive Vice President and Chief Financial Officer 38 2003

       

      Executive Vice President and Chief Financial Officer

       

      40

       

      2003

       

      John D. Gillespie President of WM Advisors 45 2001

      G. Thompson Hutton

       

      President and CEO of White Mountains Re

       

      51

       

      2006

       

      Robert R. Lusardi Executive Vice President and Managing Director of White Mountains Capital, Inc. 47 2005

       

      Executive Vice President and Managing Director of White Mountains Capital, Inc.

       

      50

       

      2005

       

      T. Michael Miller

       

      President and CEO of OneBeacon

       

      48

       

      2005

       

      J. Brian Palmer Chief Accounting Officer 32 2001

       

      Chief Accounting Officer

       

      34

       

      2001

       

      Robert L. Seelig Vice President and General Counsel 36 2002

       

      Vice President and General Counsel

       

      38

       

      2002

       

      Gary C. Tolman

       

      President and CEO of Esurance

       

      55

       

      2005

       

       

      All executive officers of the Company and its subsidiaries are elected by the Board for a term of one-yearone year or until their successors have been elected and have duly qualified. Information with respect to the principal occupation and relevant business experience of the Executive Officers follows:

      Mr. Barrettehas served as Chairman and CEO of the Company since January 2007. He served as a director of the Company from 2000 to 2005 and was appointedre-appointed as a director in August 2006. He previously served as President and CEO of the Company on January 1,from 2003 and has been a director since 2000. Mr. Barrette wasto 2005, as CEO of OneBeacon from June 2001 to December 2002, as President of the Company from 2000 to 2001 and remains its Chairman. Mr. Barrette joined White Mountains Insurance Group in November 1997 as Executive Vice President and Chief Financial Officer. He was PresidentOfficer of the Company from January 20001997 to June 2001. Prior to joining White Mountains, Mr. Barrette had 23 years of experience in the insurance



      business, mostly at Fireman's Fund Insurance Company. He is also Chairman of Esurance, Lead Director of Montpelier and a director of several White Mountains subsidiaries.2000.

      Mr. CavooresChokel was appointedhas served as Managing Director and PresidentChief Financial Officer of OneBeacon in December 2001 and was appointed CEO of OneBeacon in September 2003. Mr. Cavoores formerly served as a Managing Director of Fund American from 2000 to June 2001 and as a Managing Director of OneBeacon from June 2001 to December 2001.White Mountains Re since August 2006. Prior to joining White Mountains in 2001, Mr. Cavoores served as Chief Operating Officer of Reliance Insurance Group from April 2000 to October 2000, and as President and CEO of National Union Fire Insurance Company (a wholly-owned subsidiary of American International Group) from May 1998 to April 2000. He was with Chubb Corporation from 1979 to 2000 in a variety of capacities, most recently as their Chief Underwriting Officer of worldwide specialty business.

      Mr. Chokel hasthat he served as Managing Director of White Mountains Capital, Inc. since September 2003. Prior to that he served2003, as Managing Director and Chief Administrative Officer of OneBeacon since January 2003 and as Managing Director of OneBeacon since March 2002. Prior to joining OneBeacon, Mr. Chokel served as Executive Vice President and Chief Financial Officer of Conseco, Inc. from March 2001 to March 2002 and as Co-CEO of The Progressive Corporation from January 1999 to January 2001. Mr. Chokel was withjoined Progressive sincein 1978. He is also a director of other White Mountains subsidiaries.

      Mr. Fass has been a director of the Company since 2000. Mr. Fass has served as President and CEO of White Mountains Re since May 2004. Mr. Fass previously served as President and CEO of Folksamerica and its subsidiaries from 1984 to 2004. He joined Folksamerica as its Vice President, Treasurer and Chief Financial Officer in 1980. Mr. Fass also serves as Chairman of Folksamerica, a director of White Mountains Re and is a director of other White Mountains subsidiaries.

      Mr. Foywas appointed Executive Vice President and Chief Financial Officer of the Company in April 2003. Prior to joining White Mountains in 2003, Mr. Foy served as Senior Vice President and Chief Financial Officer of Hartford Life Inc. and joined that company in 1993. Prior to joining Hartford Life, Mr. Foy was with Milliman and Robertson, an actuarial consulting firm. Mr. Foy also serves as the Chairman of Symetra.

      Mr. Gillespie has served as a Deputy Chairman of the Company since January 2003Symetra and serves as Chairman and President of WM Advisors. Mr. Gillespie served as Managing Director of OneBeacon from June 2001 to March 2003 and has been a director of the Company since 1999. He is also the founder and Managing Partner of his own investment firm, Prospector Partners, LLC ("Prospector"). Prior to forming Prospector, Mr. Gillespie was President of the T. Rowe Price Growth Stock Fund and the New Age Media Fund, Inc. Mr. Gillespie serves as a director of Montpelier, SymetraOneBeacon Ltd.

      Mr. Hutton was appointed President and certainCEO of White Mountains subsidiaries.Re in February 2006. Prior to joining White Mountains, since 2000 Mr. Gillespie's father, George Gillespie, is ChairmanHutton served as a board member and consultant to private equity investors and their portfolio companies, first as a Venture Partner with Trident Capital and then as Managing Partner of the Company.Thompson Hutton, LLC. From 1990-2000, Mr. Hutton served as President and CEO of Risk Management Solutions, Inc. and was formerly a management consultant at McKinsey and Company, Inc.

      Mr. Lusardiwas appointed Executive Vice President and Managing Director of White Mountains Capital, Inc. in February 2005. Prior to joining White Mountains, Mr. Lusardi was an Executive Vice President of XL Capital Ltd, most recently as Chief Executive of Financial Products and Services. Prior to joining XL Capital Ltd, Mr. Lusardi was a Managing Director at Lehman Brothers, where he was employed from 1980 to 1998. Mr. Lusardi also serves as a director of OneBeacon Ltd., Symetra and Primus Guaranty, Ltd.

      Mr. Miller was appointed President and CEO of OneBeacon in July 2005 and joined OneBeacon as its Chief Operating Officer in April 2005. Prior to joining White Mountains, Mr. Miller spent 10 years at St. Paul Travelers, most recently as Co-Chief Operating Officer. Prior to joining St. Paul Travelers, Mr. Miller spent 14 years with The Chubb Corporation.

      Mr. Palmerhas served as Chief Accounting Officer since June 2001 and previously served as Controller of a subsidiary of White Mountains from 1999 to 2001. Prior to joining White Mountains in 1999, Mr. Palmer was with PricewaterhouseCoopers LLP.

      Mr. Seeligis Vice President and General Counsel of the Company. Prior to joining White Mountains in September 2002, Mr. Seelig was with the law firm of Cravath, Swaine & Moore.

      Mr. Tolman has served as President and CEO of Esurance since 2000. Prior to joining Esurance, Mr. Tolman was with Talegen Holdings for 6 years, serving most recently as its President. Prior to joining Talegen, Mr. Tolman was with Fireman’s Fund Corporation for more than 15 years.



      PART II

      Item 5.                          Market for the Company'sCompany’s Common Equity, Related Shareholder Matters and Issuer Purchase of Equity Securities

      As of February 15, 2005,28, 2007, there were 394368 registered holders of Common Shares,White Mountains’ common shares, par value $1.00 per share.

      During each of 20042006 and 20032005, the Company declared and paid cash dividends on common shares of $8.00 and $8.00 per common share, respectively.

      Common Shares of $1.00 per Common Share. The Company's dividend payment policy provides for an annual dividend payable in the first quarter of each year, dependent on the Company's financial position and the regularity of its cash flows.

              Common Sharesshares are listed on the New York Stock Exchange (symbol WTM) and the Bermuda Stock Exchange (symbol WTM-BH). The quarterly range of the daily closinghigh and low sales price for Common Sharescommon shares during 20042006 and 20032005 is presented below:

       
       2004
       2003
       
       High
       Low
       High
       Low
      Quarter ended:            
       December 31 $659.00 $501.00 $461.00 $413.00
       September 30  526.00  467.00  416.75  362.00
       June 30  553.80  476.10  420.50  340.00
       March 31  524.50  453.50  340.00  311.70
        
       
       
       

       

       

      2006

       

      2005

       

       

       

      High

       

      Low

       

      High

       

      Low

       

      Quarter ended:

       

       

       

       

       

       

       

       

       

      December 31

       

      $

      603.00

       

      $

      496.00

       

      $

      638.99

       

      $

      555.00

       

      September 30

       

      537.00

       

      447.00

       

      711.99

       

      583.60

       

      June30

       

      591.00

       

      465.01

       

      677.50

       

      564.50

       

      March 31

       

      594.50

       

      517.00

       

      695.00

       

      582.00

       

       As permitted

      No repurchases of common shares were made by the agreement governing the Company's outstanding options to acquire Common Shares ("Options"),or on behalf of the Company accepted 97during the fourth quarter of 2006.

      For information on securities authorized for issuance under the Company’s equity compensation plans, see “Item 12 - Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.”

      The following graph shows the five-year cumulative total return for a shareholder who invested $100 in common shares in partial satisfaction(NYSE symbol “WTM”) as of January 1, 2002, assuming re-investment of dividends. Cumulative returns for the strike price relating tofive-year period ended December 31, 2006 are also shown for the exerciseStandard & Poor’s 500 Stocks (Property & Casualty) Capitalization Weighted Index (“S&P P&C”) and the Standard & Poor’s 500 Stocks Capitalization Weighted Index (“S&P 500”) for comparison.

      Five-Year Cumulative Total Return
      (value of 435 Options during the 2004 fourth quarter. The Common Shares received by the Company were valued at the applicable New York Stock Exchange closing price on the day of exercise ($629.75 per Common Share).$100 invested January 1, 2002)




      Item 6.                          Selected Financial Data

      Selected consolidated income statement data and ending balance sheet data for each of the five years ended December 31, 2004,December31, 2006, follows:

       
       Year Ended December 31,
       
      $ in millions, except share and per share amounts

       
       2004
       2003
       2002
       2001(a)(l)
       2000(l)
       
      Income Statement Data:                
      Revenues $4,553 $3,794 $4,208 $3,234 $851 
      Expenses  4,305  3,422  4,089  3,662  493 
        
       
       
       
       
       
      Pretax earnings (loss)  248  372  119  (428) 358 
       Income tax (provision) benefit  (47) (127) (11) 179  (43)
       Accretion and dividends on preferred stock of subsidiaries    (21)(j) (41) (23)  
       Equity in earnings (loss) of unconsolidated affiliates  37  57  14  1  (2)
        
       
       
       
       
       
      Net income (loss) from continuing operations  238  281  81  (271) 313 
       Net income from discontinued operations          95(b)
       Cumulative effect of changes in accounting principles      660(i)    
       Extraordinary gains  181(k)   7  12   
        
       
       
       
       
       
      Net income (loss) $419 $281 $748 $(259)$408 
        
       
       
       
       
       
      Net income (loss) from continuing operations per share:                
       Basic $24.05 $26.48 $7.47 $(86.52)$53.08 
       Diluted $22.67 $23.63 $6.80 $(86.52)$52.84 
        
       
       
       
       
       
      Balance Sheet Data:                
      Total assets $19,015 $15,882 $17,267 $18,410 $3,545 
      Short-term debt      33  358   
      Long-term debt  783  743  760  767  96 
      Deferred credits      (i) 683(c) 92 
      Convertible preference shares      219     
      Mandatorily redeemable preferred stock of subsidiaries  212  195(j) 181  170   
      Common shareholders' equity(d)  3,884  2,979  2,408  1,445  1,046 
      Book value per share(e) $349.60 $293.15 $254.52 $160.36 $177.07 
      Fully converted tangible book value per share(f) $342.52 $291.27 $258.82 $225.81 $187.65 
        
       
       
       
       
       
      Share Data:                
      Cash dividends paid per Common Share $1.00 $1.00 $1.00 $1.00 $1.20 
      Ending Common Shares (000's)(g)  10,773  9,007  8,351  8,245  5,880 
      Ending equivalent Common Shares (000's)(h)  47  1,775  2,455  1,803  81 
        
       
       
       
       
       
      Ending Common and equivalent Common Shares (000's)  10,819  10,782  10,806  10,048  5,961 
        
       
       
       
       
       

       

       

      Year Ended December 31,

       

      $ in millions, except share and per share amounts

       

      2006

       

      2005

       

      2004

       

      2003

       

      2002

       

      Income Statement Data:

       

       

       

       

       

       

       

       

       

       

       

      Revenues

       

      $

      4,794

       

      $

      4,632

       

      $

      4,555

       

      $

      3,794

       

      $

      4,208

       

      Expenses

       

      4,064

       

      4,327

       

      4,297

       

      3,420

       

      4,089

       

      Pre-tax earnings (loss)

       

      730

      (h)

      305

       

      258

       

      374

       

      119

       

      Income tax (provision) benefit

       

      (99

      )

      (37

      )

      (47

      )

      (127

      )

      (11

      )

      Minority interest

       

      (16

      )

      (12

      )

      (11

      )

      (2

      )

       

      Equity in earnings of unconsolidated affiliates

       

      37

       

      34

       

      38

       

      57

       

      14

       

      Accretion and dividends on preferred stock of subsidiaries

       

       

       

       

      (21

      )(b)

      (41

      )

      Net income from continuing operations

       

      652

       

      290

       

      238

       

      281

       

      81

       

      Cumulative effect of changes in accounting principles

       

       

       

       

       

      660

      (a)

      Extraordinary gains

       

      21

       

       

      181

      (c)

       

      7

       

      Net income

       

      $

      673

       

      $

      290

       

      $

      419

       

      $

      281

       

      $

      748

       

      Net income from continuing operations per share:

       

       

       

       

       

       

       

       

       

       

       

      Basic

       

      $

      62.51

       

      $

      26.96

       

      $

      24.05

       

      $

      26.48

       

      $

      7.47

       

      Diluted

       

      $

      62.32

       

      $

      26.56

       

      $

      22.67

       

      $

      23.63

       

      $

      6.80

       

       

       

       

       

       

       

       

       

       

       

       

       

      Balance Sheet Data:

       

       

       

       

       

       

       

       

       

       

       

      Total assets

       

      $

      19,444

       

      $

      19,418

       

      $

      19,015

       

      $

      15,882

       

      $

      17,267

       

      Short-term debt

       

       

       

       

       

      33

       

      Long-term debt

       

      1,107

       

      779

       

      783

       

      743

       

      760

       

      Convertible preference shares

       

       

       

       

       

      219

       

      Mandatorily redeemable preferred stock of subsidiaries

       

      262

       

      234

       

      212

       

      195

      (b)

      181

       

      Minority interest

       

      603

      (h)

      96

       

      59

       

      5

       

       

      Common shareholders’ equity

       

      4,455

       

      3,833

       

      3,884

       

      2,979

       

      2,408

       

      Book value per share (d)

       

      $

      408.62

       

      $

      347.00

       

      $

      349.60

       

      $

      293.15

       

      $

      254.52

       

      Fully converted tangible book value per share (e)

       

      $

      406.00

       

      $

      342.51

       

      $

      342.52

       

      $

      291.27

       

      $

      258.82

       

       

       

       

       

       

       

       

       

       

       

       

       

      Share Data:

       

       

       

       

       

       

       

       

       

       

       

      Cash dividends paid per common share

       

      $

      8.00

       

      $

      8.00

       

      $

      1.00

       

      $

      1.00

       

      $

      1.00

       

      Ending common shares (000’s) (f)

       

      10,783

       

      10,779

       

      10,773

       

      9,007

       

      8,351

       

      Ending equivalent common shares (000’s) (g)

       

      29

       

      34

       

      46

       

      1,775

       

      2,455

       

      Ending common and equivalent common shares (000’s)

       

      10,812

       

      10,813

       

      10,819

       

      10,782

       

      10,806

       


      (a)

      Includes the acquisition of OneBeacon on June 1, 2001 and its results of operations from that date through December 31, 2001. In connection with the OneBeacon Acquisition, White Mountains issued $1,085 million in debt. White Mountains also issued preferred stock of subsidiaries, warrants to acquire Common Shares and Convertible Preference Shares for total proceeds of $758 million.

      (b)
      Relates to a tax reserve release associated with the 1991 sale of Fireman's Fund Insurance Company.

      (c)
      Deferred credits added during 2001 resulted from the purchase of OneBeacon.

      (d)
      Increase in 2001 included effects of capital raising activities undertaken in connection with the OneBeacon Acquisition. Increase in 2002 included the recognition of $660 million in net deferred credits as a result of a change in accounting principles. See Note 1.

      (e)
      Includes the dilutive effects of outstanding Options and, for years prior to 2004, warrants to acquire Common Shares.

      (f)
      Book value per share plus unamortized deferred credits less goodwill and the equity in net unrealized gains from Symetra's fixed income portfolio per Common and equivalent Common Share. The 2002 fully converted tangible book value per share assumes outstanding convertible preference shares to be equivalent Common Shares.

      (g)
      During 2003, 677,966 Common Shares were issued in satisfaction of Convertible Preference Shares. During 2004, 1,724,200 Common Shares were issued in satisfaction of warrants exercised.

      (h)
      Includes outstanding Convertible Preference Shares, Options and warrants to acquire Common Shares, when applicable.

      (i)
      In accordance with its adoption of Statement of Financial Accounting Standard ("SFAS"(“SFAS”) No. 141, "Business Combinations" ("SFAS 141")“Business Combinations”,the Company recognized all of its outstanding deferred credits on January 1, 2002. See Note 1.

      (j)
      1,2002.

      (b)In accordance with its adoption of SFAS No. 150, "Accounting“Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity" ("Equity” (“SFAS 150"150”), on July 1, 2003,1,2003, the Company reclassified its outstanding mandatorily redeemable preferred stock from mezzanine equity to liabilities on its balance sheet and, beginning in the third quarter of 2003, White Mountains began presenting all accretion and dividends on its mandatorily redeemable preferred stock as interest expense. See Note 1.

      (k)

      (c)Extraordinary gains in 2004 resulted from the excess of the fair value over the cost of net assets acquired in the Sirius, Symetra, Tryg-Baltica and Sierra transactions.

      (l)
      For a description

      (d)            Includes the dilutive effects of the historical factors affecting OneBeacon's lossoutstanding incentive options to acquire common shares (“Options”) and, LAE reservesfor years prior to 2004, warrants to acquire common shares.

      (e)             Book value per share plus unamortized deferred credits less goodwill and the equity in net unrealized gains from Symetra’s fixed income portfolio per common and equivalent common share. The 2002 fully converted tangible book value per share assumes outstanding convertible preference shares to be equivalent common shares.

      (f)               During 2003, 677,966 common shares were issued in satisfaction of Convertible Preference Shares. During 2004, 1,724,200 common shares were issued in satisfaction of warrants exercised.

      (g)            Includes outstanding Convertible Preference Shares, Options and warrants to acquire common shares, when applicable.

      (h)            In connection with the OneBeacon Acquisition, see "Non-AsbestosOffering, White Mountains recognized a $171 million gain in other revenues and Environmental Reserves" under the caption "Loss and Loss Adjustment Expense Reserves" in the "OneBeacon" section of the business description contained within the Company's Amendment No. 6 to Form S-3 dated July 17, 2003 (the "Form S-3"). Such portion of the Form S-3 is incorporated by reference into this Form 10-K.

      recorded a $491 million minority interest liability.

      43





      Item 7. Management's                          Management’s Discussion and Analysis of Financial Condition and Results of Operations

      The following discussion contains "forward-looking statements"“forward-looking statements”. White Mountains intends statements whichthat are not historical in nature, andwhich are hereby identified as forward-looking statements, to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. White Mountains cannot promise that its expectations in such forward-looking statements will turn out to be correct. White Mountains'Mountains’ actual results could be materially different from and worse than its expectations. See "FORWARD-LOOKING STATEMENTS"STATEMENTS” for specific important factors that could cause actual results to differ materially from those contained in forward-looking statements.

      The following discussion also includes twothree non-GAAP financial measures, adjusted comprehensive net income and(loss), fully converted tangible book value per common and equivalent share and tangible capital, that have been reconciled to their most comparable GAAP financial measures (see page 55)59). White Mountains believes these measures to be more relevant than comparable GAAP measures in evaluating White Mountains'Mountains’ financial performance.performance and condition.




      RESULTS OF OPERATIONS FOR THE YEARS ENDED DECEMBER 31, 2004, 20032006, 2005 and 2002
      2004

      OverviewOverview

      White Mountains ended 20042006 with a fully converted tangible book value per Common Sharecommon share of $343,$406, which representsrepresented an increase of 18%21% (including dividends) over the fully converted tangible book value per Common Sharecommon share of $291$343 as of December 31, 2003. During 2003,2005. This increase reflects favorable weather conditions and strong investment results when compared to 2005. Additionally, during the fourth quarter of 2006, White Mountains recognized an after-tax gain of $171 million, or $16 per common share, on the sale of 27.6% of its interest in OneBeacon through an initial public offering.

      White Mountains ended 2005 with a fully converted tangible book value per Common Share increased by 13%common share of $343, which represented an increase of 2% (including dividends) from $259$343 as of December 31, 2002.

              Adjusted comprehensive net income was $539 million for 2004, compared to $360 million2004. During 2005, White Mountains experienced significant losses from hurricanes Katrina, Rita and Wilma, and from the Company’s investment in 2003. Net income for 2004 was $419 million, compared to $281 million in 2003.

              The growth inMontpelier Re that adversely impacted fully converted tangible book value was driven by strong investment results, particularly equities which returned 20%, and $180 million in transaction gains. This more than offset the impact of higher than expected losses from catastrophes and prior year reserve development. The growth in earnings was primarily driven by the transaction gains as both 2004 and 2003 had strong investment results.per common share.

              All three business segments performed well. OneBeacon's combined ratio in 2004 was 99%, the second consecutive year it was below 100%, and Esurance earned a profit for the first time in 2004. White Mountains Re had a combined ratio of 104% due to 11 points from catastrophes. However, the segment contributed $140 million in transaction gains and therefore was a significant contributor to the Company's growth in book value for the year.




      Fully Converted Tangible Book Value Per Share

      The following table presents the Company'sCompany’s tangible book value per share for the years ended December 31, 2004, 2003,2006, 2005, and 20022004 and reconciles this non-GAAP measure to the most comparable GAAP measure.measure:



       December 31,
       

       

      December 31,

       

       



       2004
       2003
       2002
       

       

      2006

       

      2005

       

      2004

       

       

      Book value per share numerators (in millions):Book value per share numerators (in millions):       

       

       

       

      ��

       

       

       

       

      Common shareholders' equity $3,883.9 $2,979.2 $2,407.9 
      Proceeds from assumed exercise of outstanding warrants  300.0 300.0 
      Benefits to be received from share obligations under employee benefit plans 6.7 7.0 8.8 
      Remaining accretion of subsidiary preferred stock to face value (108.1) (125.5) (139.1)
       
       
       
       

      Common shareholders equity

       

      $

      4,455.3

       

      $

      3,833.2

       

      $

      3,883.9

       

       

      Benefits to be received from share obligations under employee benefit plans

       

      4.7

       

      5.1

       

      6.7

       

       

      Remaining accretion of subsidiary preferred stock to face value

       

      (41.8

      )(1)

      (86.0

      )

      (108.1

      )

       

      Book value per share numeratorBook value per share numerator 3,782.5 3,160.7 2,577.6 

       

      4,418.2

       

      3,752.3

       

      3,782.5

       

       

      Equity in net unrealized gains from Symetra's fixed maturity portfolio (56.6)   
      Assumed conversion of convertible preference shares to Common Shares   219.0 
      Unamortized goodwill of consolidated limited partnerships (20.0) (20.3)  
       
       
       
       

      Equity in net unrealized (gains) losses from Symetras fixed maturity portfolio

       

      4.1

       

      (24.2

      )

      (56.6

      )

       

      Goodwill

       

      (32.5

      )

      (24.4

      )

      (20.0

      )

       

      Fully converted tangible book value per common and equivalent share numeratorFully converted tangible book value per common and equivalent share numerator $3,705.9 $3,140.4 $2,796.6 

       

      $

      4,389.8

       

      $

      3,703.7

       

      $

      3,705.9

       

       

       
       
       
       
      Book value per share denominators (in millions):       
      Common Shares outstanding 10,772.8 9,007.2 8,351.4 
      Common Shares issuable upon exercise of outstanding warrants  1,724.2 1,714.3 
      Share obligations under employee benefit plans 46.6 50.6 61.9 
       
       
       
       
      Book value per share denominator 10,819.4 10,782.0 10,127.6 
      Assumed conversion of convertible preference shares to Common Shares   678.0 
       
       
       
       
      Fully converted tangible book value per common and equivalent share denominator 10,819.4 10,782.0 10,805.6 
       
       
       
       

      Book value per share denominators (in thousands of shares):

       

       

       

       

       

       

       

       

      Common shares outstanding

       

      10,782.8

       

      10,779.2

       

      10,772.8

       

       

      Share obligations under employee benefit plans

       

      29.5

       

      34.3

       

      46.5

       

       

      Fully converted tangible book value per common and equivalent share

       

      10,812.3

       

      10,813.5

       

      10,819.3

       

       

      Book value per shareBook value per share $349.60 $293.15 $254.52 

       

      $

      408.62

       

      $

      347.00

       

      $

      349.60

       

       

      Fully converted tangible book value per common and equivalent shareFully converted tangible book value per common and equivalent share 342.52 291.27 258.82 

       

      406.00

       

      342.51

       

      342.52

       

       

       
       
       
       

      (1)             72.4% of remaining adjustment of subsidiary preferred stock to face value, which is representative of White Mountains’ ownership interest in OneBeacon.



      Review of Consolidated Results

      A tabular summary of White Mountains'Mountains’ consolidated financial results for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 follows:



       Year Ended December 31,
       

       

      Year Ended December 31,

       

      Millions

      Millions

       

       

      2006

       

      2005

       

      2004

       

      2004
       2003
       2002
       
      Gross written premiums $4,792.1 $3,823.4 $4,421.6 
       
       
       
       
      Net written premiums $3,904.8 $3,007.7 $3,293.5 
       
       
       
       

      Gross written premiums

       

      $

      4,312.4

       

      $

      4,601.6

       

      $

      4,792.1

       

      Net written premiums

       

      $

      3,843.5

       

      $

      3,776.1

       

      $

      3,904.8

       

      RevenuesRevenues       

       

       

       

       

       

       

       

      Earned insurance and reinsurance premiums $3,820.5 $3,137.7 $3,576.4 
      Net investment income 360.9 290.9 366.0 
      Net realized investment gains 181.1 162.6 156.0 
      Other revenue 190.5 202.6 109.5 
       
       
       
       
       Total revenues 4,553.0 3,793.8 4,207.9 
       
       
       
       

      Earned insurance and reinsurance premiums

       

      $

      3,712.7

       

      $

      3,798.6

       

      $

      3,820.5

       

      Net investment income

       

      435.5

       

      491.5

       

      360.9

       

      Net realized investment gains

       

      272.7

       

      112.6

       

      181.1

       

      Gain on sale of OneBeacon shares

       

      171.3

       

       

       

      Other revenue

       

      202.0

       

      229.2

       

      192.8

       

      Total revenues

       

      4,794.2

       

      4,631.9

       

      4,555.3

       

      ExpensesExpenses       

       

       

       

       

       

       

       

      Losses and LAE 2,591.1 2,138.1 2,638.2 
      Insurance and reinsurance acquisition expenses 743.5 615.0 804.3 
      Other underwriting expenses 521.3 347.1 401.7 
      General and administrative expenses 309.3 201.8 92.7 
      Accretion of fair value adjustment to loss and LAE reserves 43.3 48.6 79.8 
      Interest expense—debt 49.1 48.6 71.8 
      Interest expense—dividends and accretion on preferred stock subject to mandatory redemption 47.6 22.3  
       
       
       
       
       Total expenses 4,305.2 3,421.5 4,088.5 
       
       
       
       
      Pretax income $247.8 $372.3 $119.4 
      Income tax expense (47.0) (127.6) (11.7)
      Accretion and dividends on mandatorily redeemable preferred stock of subsidiaries  (21.5) (40.9)
      Equity in earnings of unconsolidated affiliates 37.4 57.4 14.0 
       
       
       
       
      Net income before accounting changes and extraordinary items $238.2 $280.6 $80.8 
      Excess of fair value of acquired net assets over cost 180.5  7.1 
      Cumulative effect of changes in accounting principles   660.2 
       
       
       
       

      Losses and LAE

       

      2,452.7

       

      2,858.2

       

      2,591.1

       

      Insurance and reinsurance acquisition expenses

       

      754.8

       

      761.2

       

      744.4

       

      Other underwriting expenses

       

      505.4

       

      424.7

       

      520.4

       

      General and administrative expenses

       

      218.3

       

      148.8

       

      301.0

       

      Accretion of fair value adjustment to loss and LAE reserves

       

      24.5

       

      36.9

       

      43.3

       

      Interest expense - debt

       

      50.1

       

      44.5

       

      49.1

       

      Interest expense - dividends and accretion on preferred stock

       

      58.6

       

      52.4

       

      47.6

       

      Total expenses

       

      4,064.4

       

      4,326.7

       

      4,296.9

       

      Pre-tax income

       

      $

      729.8

       

      $

      305.2

       

      $

      258.4

       

      Income tax provision

       

      (98.9

      )

      (36.5

      )

      (47.0

      )

      Equity in earnings of unconsolidated affiliates

       

      36.9

       

      33.6

       

      37.4

       

      Minority interest

       

      (16.0

      )

      (12.2

      )

      (10.6

      )

      Net income before extraordinary items

       

      $

      651.8

       

      $

      290.1

       

      $

      238.2

       

      Excess of fair value of acquired net assets over cost

       

      21.4

       

       

      180.5

       

      Net incomeNet income $418.7 $280.6 $748.1 

       

      $

      673.2

       

      $

      290.1

       

      $

      418.7

       

      Other comprehensive income 176.5 79.0 202.3 
       
       
       
       

      Other comprehensive income (loss)

       

      32.9

       

      (254.1

      )

      176.5

       

      Comprehensive net incomeComprehensive net income $595.2 $359.6 $950.4 

       

      $

      706.1

       

      $

      36.0

       

      $

      595.2

       

      Less: Change in net unrealized gains from Symetra's fixed maturity portfolio (56.6)   
       
       
       
       

      Change in net unrealized (gains) losses from Symetras fixed maturity portfolio

       

      28.3

       

      32.4

       

      (56.6

      )

      Adjusted comprehensive net incomeAdjusted comprehensive net income $538.6 $359.6 $950.4 

       

      $

      734.4

       

      $

      68.4

       

      $

      538.6

       

       
       
       
       

      Consolidated Results—Results - Year Ended December 31, 20042006 versus Year Ended December 31, 20032005

      White Mountains reported adjusted comprehensive net income of $734 million for 2006, compared to $68 million in 2005. Net income was $673 million in 2006, compared to $290 million in 2005. The increase in 2006 adjusted comprehensive net income resulted primarily from the gain on the sale of OneBeacon shares, favorable weather conditions, strong investment returns and a $21 million after-tax gain on the purchase of Mutual Service. In addition, the 2005 results included $288 million in after-tax losses from hurricanes Katrina, Rita and Wilma, while 2006 included $70 million in after-tax losses from adverse development on those storms and a $95 million after-tax loss from the Olympus reimbursement (see description on page 52). 2005 also included $104 million of after-tax comprehensive net loss from the Montpelier Re investment, compared to $10 million in after-tax comprehensive net income in 2006. Adjusted comprehensive net income for 2006 also benefitted from $59 million of after-tax unrealized foreign currency gains, compared to $70 million of after-tax unrealized foreign currency losses in 2005, primarily from currency fluctuations of the U.S. dollar against the Swedish Krona and the Euro.

      White Mountains'Mountains’ total revenues increased by 20%4% to $4,794 million in 20042006 compared to 2003. Growth$4,632 million in revenues was driven by the 22% increase in earned premiums2005, mainly due to the Sirius Acquisition$171 million gain on the sale of OneBeacon shares and Atlantic Specialty transactions. Neta $160 million increase in net realized investment income grew 24%gains, primarily due to $165 million of pre-tax losses in 2004the value of the Company’s investment in Montpelier Re realized during 2005, compared to a $5 million pre-tax gain realized in 2006. These increases were


      partially offset by a $56 million decrease in net investment income, primarily due to the incomereceipt in 2005 of $74 million special dividend from Montpelier Re, and a 2% decrease in earned on the additional invested assets acquired in the Sirius Acquisition offset by decreased net invested assets at OneBeacon.



              White Mountains' total expenses grew 26% for 2004 as loss and LAE, insurance acquisition and underwriting expenses were all up due to the Sirius Acquisition and Atlantic Specialty transactions. General and administrative costs were up 53% in 2004,premiums, primarily due to a decreases at OneBeacon and White Mountains Re, which were partially offset by an increase at Esurance.

      White Mountains’ total expenses decreased by 6% to $4,604 million for 2006, primarily due to a $406 million decrease in incentive compensation accruals, which were drivenlosses and LAE, partially offset by a 41% rise in White Mountains' stock price during the year. White Mountains expenses its full cost of all incentive compensation programs. This expense is spread among loss and LAE, other underwriting expense and general and administrative expense for White Mountains' insurance and reinsurance operating subsidiaries, depending upon the function of the employees being compensated. For Other Operations, it is entirely included$70 million increase in general and administrative expenses.

      The decrease in losses and LAE was due mainly to lower catastrophe losses in 2006 compared to 2005. In 2005, White Mountains' net income in 2004 also benefitted from $181Mountains reported $422 million in transaction gains: $111pre-tax loss and LAE on hurricanes Katrina, Rita and Wilma, compared to $106 million in loss and LAE from the Sirius Acquisition, $41adverse development on those storms, as well as a $137 million for the Symetra investment, $20 million from the Tryg-Baltica acquisitionloss and $9 million in forgone override commissions from the Sierra Group acquisition.Olympus reimbursement in 2006. The increase in general and administrative expenses in 2006 when compared to 2005 was primarily due to increased incentive compensation expenses.

      Consolidated Results—Results - Year Ended December 31, 20032005 versus Year Ended December 31, 20022004

      White Mountains' total revenues decreased by 10% in 2003Mountains reported adjusted comprehensive net income of $68 million for 2005, compared to 2002, as an increase$539 million in earned reinsurance premiums at Folksamerica2004. Net income was more than offset by a decrease$290 million in earned insurance premiums at OneBeacon as a result of2005, compared to $419 million in 2004. The reduction in 2005 adjusted comprehensive net income resulted primarily from the business transferred to Liberty Mutual under the Liberty Agreement. Total revenues in 2003 were also impacted by decreased netaforementioned hurricane losses and Montpelier Re investment income due to the run-off of loss reserves from OneBeacon's other businessesdecline, as well as the reduced interest rate environment. The declineimpact of $181 million in transaction gains reported in 2004, primarily from the Sirius Acquisition.

      White Mountains’ total revenues increased by 2% in 20032005 compared to 2004, mainly from a $131 million increase in net investment income, primarily due to a $74 million special dividend from Montpelier Re in 2005. Earned premiums decreased by 1% in 2005, primarily due to a decrease at OneBeacon, which was partially offset by increases at White Mountains Re and Esurance. Net realized investment gains decreased by $69 million in 2005, primarily due to losses in the value of the Company’s investment in Montpelier Re during 2005.

      White Mountains’ total expenses also increased by 1% for 2005 as a $267 million increase in loss and LAE, primarily due to hurricanes Katrina, Rita and Wilma, was partially offset by an increase in other revenues, primarily as a result of $50$152 million in gains recorded during 2003 related to the sale of several real estate properties previously written-off under purchase accounting for OneBeacon and a $30 million increase in fees and commissions for business placed by WMU.

              Total expenses decreased by 16% in 2003 as compared to 2002, as loss and LAE, as well as insurance acquisition and other underwriting expenses, decreased at OneBeacon as a result of improved underwriting performance on its on-going businesses and as the continued run-off of unprofitable business through the Liberty Agreement. In addition, interest expense on debt decreased 32% in 2003 as a result of the repayment of the $260 million of debt in November 2002 and the refinancing of $700 million of debt in May 2003. Also contributing to the decrease in expenses was a decrease in the accretion of the fair value adjustment to the reserves acquired as part of the OneBeacon Acquisition. This accretion will continue to decrease as those acquired reserves are paid over time. Partially offsetting these expense decreases was an increase in general and administrative expense of $109 million in 2003 over 2002,expenses, primarily due to an increase indecreased incentive compensation accruals, which were driven byexpense resulting from a 42% rise14% decline in White Mountains' stockMountains’ share price during 2003.the year.


      Income Taxes

      The Company is domiciled in Bermuda and has subsidiaries domiciled in several countries. The majority of the Company'sCompany’s worldwide operations are taxed in the United States. Income earned or losses incurred by non-U.S. companies will generally be subject to an overall effective tax rate lower than that imposed by the United States.

      The income tax provision related to pretax earnings for 2004, 20032006, 2005 and 20022004 represents an effective tax rate of 19.0%13.6%, 34.3%12.0% and 9.8%18.2%, respectively. White Mountains'Mountains’ effective tax raterates for 2006, 2005 and 2004 waswere lower than the U.S. statutory rate of 35% due primarily fromto income generated in jurisdictions other than the United StatesStates. In addition, White Mountains’ effective tax rate for 2006 benefitted from tax benefits recognized in the second quarter of 2006 related to settlements of U.S. Federal income tax audits for years 2001 and 2002 of Fund American Financial Services, Inc. and White Mountains’ effective tax rate for 2004 benefitted from the recognition of foreign tax credits, partially offset by taxes incurred from an internal restructuringreorganization of the company.

      During 2005, White Mountains' effective tax rate for 2002Mountains was lower thanadvised that the U.S. statutory rate of 35% primarily from income generated in jurisdictions other thanJoint Committee on Taxation approved the United States.States Internal Revenue Service audit of White Mountains’ 1997-2000 tax years, which contained no significant adjustments to the tax returns filed by White Mountains. This audit included the redomestication of White Mountains to Bermuda in 1999.




      I. Summary of Operations By Segment

      White Mountains conducts its operations through four segments: (i) "OneBeacon", (ii) "White(1) OneBeacon, (2) White Mountains Re" (consisting primarily of the operations of Folksamerica, SiriusRe, (3) Esurance and WMU), (iii) "Esurance" and (iv) "Other Operations" (consisting of the Company and its intermediate subsidiary holding companies, White Mountains' investments in its Montpelier and Symetra warrants and the International American Group).(4) Other Operations. White Mountains manages all of its investments through its wholly ownedwholly-owned subsidiary, White MountainsWM Advisors, LLC ("WM Advisors"), therefore, a discussion of White Mountains'Mountains’ consolidated investment operations is included after the discussion of operations by segment. White Mountains'Mountains’ segment information is presented in Note 13 - “Segment Information” to the Consolidated Financial Statements.


      OneBeacon

      OneBeacon

      Financial results for OneBeacon for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 follows:follow:

       
       Year Ended December 31,
      Millions

       2004
       2003
       2002
       Gross written premiums $2,657.5 $2,250.9 $3,351.6
        
       
       
       Net written premiums $2,459.1 $1,972.5 $2,522.8
        
       
       
       Earned insurance and reinsurance premiums $2,378.5 $2,160.3 $2,870.9
       Net investment income  221.4  223.7  314.0
       Net realized investment gains  129.6  127.0  113.0
       Other revenue  141.8  90.5  14.4
        
       
       
        Total revenues  2,871.3  2,601.5  3,312.3
        
       
       
       Losses and LAE  1,545.2  1,475.6  2,131.3
       Insurance and reinsurance acquisition expenses  442.3  394.2  629.6
       Other underwriting expenses  369.2  258.7  329.2
       General and administrative expenses  122.2  67.6  22.4
       Interest expense on debt  1.0  .3  
        
       
       
        Total expenses  2,479.9  2,196.4  3,112.5
        
       
       
      Pretax earnings $391.4 $405.1 $199.8
        
       
       

       

       

      Year Ended December 31,

       

      ($ in millions)

       

      2006

       

      2005

       

      2004

       

      Gross written premiums

       

      $

      2,088.4

       

      $

      2,266.5

       

      $

      2,657.5

       

      Net written premiums

       

      $

      1,957.6

       

      $

      2,121.1

       

      $

      2,459.1

       

      Earned insurance and reinsurance premiums

       

      $

      1,944.0

       

      $

      2,118.4

       

      $

      2,378.5

       

      Net investment income

       

      187.6

       

      242.4

       

      219.9

       

      Net realized investment gains

       

      156.4

       

      122.8

       

      129.4

       

      Other revenue

       

      38.8

       

      50.3

       

      59.5

       

      Total revenues

       

      2,326.8

       

      2,533.9

       

      2,787.3

       

      Losses and LAE

       

      1,180.3

       

      1,401.5

       

      1,545.2

       

      Insurance and reinsurance acquisition expenses

       

      332.3

       

      390.7

       

      442.3

       

      Other underwriting expenses

       

      360.1

       

      278.9

       

      369.2

       

      General and administrative expenses

       

      15.3

       

      8.4

       

      81.9

       

      Accretion of fair value adjustment to loss and LAE reserves

       

      23.0

       

      26.0

       

      33.2

       

      Interest expense on debt

       

      45.6

       

      44.1

       

      45.0

       

      Interest expense - dividends and accretion on preferred stock

       

      58.6

       

      52.4

       

      47.6

       

      Total expenses

       

      2,015.2

       

      2,202.0

       

      2,564.4

       

      Pre-tax earnings

       

      $

      311.6

       

      $

      331.9

       

      $

      222.9

       

       

      The following tables provide GAAP ratios, net written premiums and earned insurance premiums for OneBeacon'sOneBeacon’s ongoing businesses and in total for the years ended December 31, 2004, 2003,2006, 2005, and 2002:2004:

      Twelve Months Ended December 31, 2004

       Specialty
       Personal
       Commercial
       Total(1)
       
      GAAP Ratios:             
      Loss and LAE  59% 62% 56% 65%
      Expense  31% 32% 41% 34%
        
       
       
       
       
       Total Combined  90% 94% 97% 99%
        
       
       
       
       
      Dollars in millions

        
        
        
        
       
      Net written premiums $848.5 $724.7 $807.1 $2,459.1 
        
       
       
       
       
      Earned insurance premiums $812.0 $723.8 $703.3 $2,378.5 
        
       
       
       
       
      Twelve Months Ended December 31, 2003

       Specialty
       Personal
       Commercial
       Total(1)
       
      GAAP Ratios:             
      Loss and LAE  54% 61% 61% 68%
      Expense  32% 30% 34% 30%
        
       
       
       
       
       Total Combined  86% 91% 95% 98%
        
       
       
       
       
      Dollars in millions

        
        
        
        
       
      Net written premiums $733.7 $676.8 $426.7 $1,972.5 
        
       
       
       
       
      Earned insurance premiums $694.9 $744.7 $432.0 $2,160.3 
        
       
       
       
       
      Twelve Months Ended December 31, 2002

       Specialty
       Personal
       Commercial
       Total(1)
       
      GAAP Ratios:             
      Loss and LAE  64% 71% 67% 74%
      Expense  28% 26% 33% 33%
        
       
       
       
       
       Total Combined  92% 97% 100% 107%
        
       
       
       
       
      Dollars in millions

        
        
        
        
       
      Net written premiums $696.6 $845.2 $454.6 $2,522.8 
      Earned insurance premiums $564.3 $871.3 $527.4 $2,870.9 
        
       
       
       
       

      ($ in millions)

       

      Year Ended December 31, 2006

       

      GAAP Ratios:

       

      Specialty

       

      Personal

       

      Commercial

       

      Total(1)

       

      Loss and LAE

       

      55

      %

      64

      %

      56

      %

      61

      %

      Expense

       

      34

      %

      32

      %

      39

      %

      35

      %

      Total Combined

       

      89

      %

      96

      %

      95

      %

      96

      %

      Net written premiums

       

      $

      437.6

       

      $

      800.6

       

      $

      718.3

       

      $

      1,957.6

       

      Earned insurance premiums

       

      $

      432.3

       

      $

      822.3

       

      $

      689.3

       

      $

      1,944.0

       

      ($ in millions)

       

      Year Ended December 31, 2005

       

      GAAP Ratios:

       

      Specialty

       

      Personal

       

      Commercial

       

      Total (1)

       

      Loss and LAE

       

      54

      %

      62

      %

      59

      %

      66

      %

      Expense

       

      31

      %

      29

      %

      38

      %

      32

      %

      Total Combined

       

      85

      %

      91

      %

      97

      %

      98

      %

      Net written premiums

       

      $

      548.8

       

      $

      910.2

       

      $

      654.4

       

      $

      2,121.1

       

      Earned insurance premiums

       

      $

      521.9

       

      $

      933.7

       

      $

      654.7

       

      $

      2,118.4

       

      ($ in millions)

       

      Year Ended December 31, 2004

       

      GAAP Ratios:

       

      Specialty

       

      Personal

       

      Commercial

       

      Total (1)

       

      Loss and LAE

       

      57

      %

      63

      %

      56

      %

      65

      %

      Expense

       

      33

      %

      28

      %

      42

      %

      34

      %

      Total Combined

       

      90

      %

      91

      %

      98

      %

      99

      %

      Net written premiums

       

      $

      565.7

       

      $

      1,063.3

       

      $

      826.8

       

      $

      2,459.1

       

      Earned insurance premiums

       

      $

      539.0

       

      $

      1,070.9

       

      $

      710.3

       

      $

      2,378.5

       


      (1)

      Includes results from reciprocals (consolidated beginning April 1, 2004)run-off operations.


      Beginning in the fourth quarter of 2006, OneBeacon includes OBSP within commercial lines and run-off operations. ResultsAutoOne within personal lines. Both OBSP and AutoOne were formerly reported in specialty lines. The reporting change was undertaken to better align the reported results of OneBeacon’s underwriting units with their product and management structure. Prior periods have been reclassified to conform to the current presentation. Additionally, during 2005, OneBeacon reallocated $34 million of IBNR reserves from reciprocals are netongoing lines of business assumed by to run-off. This reallocation had the effect of lowering the combined ratios for specialty, commercial and personal lines, but had no net impact on OneBeacon’s overall results.

      OneBeacon which is contained in Personal Lines.

      OneBeacon Results—Results - Year Ended December 31, 20042006 versus Year Ended December 31, 20032005

      OverviewOverview

              OneBeacon's pretaxOneBeacon’s pre-tax income for 20042006 was $391$312 million compared to pre-tax income of $405$332 million for 20032005, and its GAAP combined ratio was 99%96% for 2004,2006 compared to 98% for 2003.2005. OneBeacon’s 2005 results included the results of NFU prior to its sale on September 30, 2005. The earnings and combined ratios for each period were relatively consistent as each period had solid performanceinclusion of NFU in the results for the current underwriting year, partially offsetfirst nine months of 2005 reduced the 2005 combined ratio by someone point.

      Lower adverse development inon prior year's reserves. In total,accident year losses caused OneBeacon’s 2006 combined ratio to decrease four points from 2005. OneBeacon’s 2006 results included $23 million of adverse development was $100on prior accident years compared to $95 million in 2004 (relating2005, which primarily related to 2002 and prior accident years) and $147years. Lower current accident year catastrophe losses also caused OneBeacon’s 2006 combined ratio to decrease two points from 2005. OneBeacon’s 2006 results included $29 million in 2003 (relatingcurrent accident year catastrophe losses compared to $81 million in 2005, which included $69 million in from hurricanes Katrina, Rita and Wilma. Offsetting these decreases was a one point increase from higher incentive compensation expenses in 2006 and a one point increase from $20 million of expenses associated with actions taken to reduce long-term occupancy costs, including OneBeacon’s move to its new U.S. headquarters in Canton, Massachusetts. In addition, OneBeacon’s 2005 results included a $54 million gain from the settlement of its retiree medical plan, which reduced the 2005 combined ratio by three points. The retiree medical plan, which had been frozen in 2002, was terminated and an independent trust was established and funded to provide benefits to covered participants. These actions relieved OneBeacon of its future retiree medical obligations and triggered recognition of the gain. The majority of the gain was recorded as a reduction of other underwriting expenses with a portion of the gain reflected as a reduction in loss and LAE because a portion of the expense of the retiree medical program was allocated to the claims department.

      OneBeacon’s total revenues decreased 8% in 2006 to $2,327 million compared to $2,534 million in 2005. The decrease was due principally to a 6% decrease in earned premiums in 2006, primarily due to 2000the aforementioned sale of NFU, which had $130 million of earned premium in 2005. Net investment income decreased to $188 million in 2006 compared to $242 million in 2005, primarily due to the receipt of a $35 million special dividend on Montpelier Re common shares in the first quarter of 2005. Net realized investment gains increased to $156 million in 2006 compared to $123 million in 2005. The 2005 period included a realized loss of $55 million due to an other-than-temporary impairment on OneBeacon’s investment in Montpelier Re common shares. Other revenues in 2006 included a pre-tax gain of $30 million from OneBeacon’s sale of the renewal rights to its Agri business and a pre-tax loss on the exchange of its investment in MSA of $13 million (after tax, the MSA exchange resulted in an $8 million net realized gain). Other revenues in 2005 included $34 million in gains recorded from the sales of two subsidiaries, NFU and Traders and Pacific Insurance Company.

      Specialty Lines. The specialty lines combined ratio for 2006 was 89% compared to 85% for 2005. The increase was primarily due a higher expense ratio, which rose to 34% in 2006 from 31% in 2005. The increased expense ratio was primarily due to a one point increase in incentive compensation expense in 2006 and the favorable impact in 2005 of the settlement of the retiree medical plan, which lowered that year’s expense ratio by two points. The loss and LAE ratio for 2006 was essentially flat when compared to 2005. Excluding the impact of the aforementioned reallocation of reserves to run-off, which reduced the 2005 loss ratio by three points, the loss and LAE ratio improved in 2006.

      Net written premiums for specialty lines decreased by 20% to $438 million in 2006, compared to $549 million in 2005, mainly due to the aforementioned sales of NFU and Agri. Excluding NFU and Agri, specialty lines net written premiums increased $41 million, or 12%, from 2005. The increase was mainly due to a $30 million increase in net written premiums at OBPP to $179 million in 2006 from $149 million in 2005, principally driven by long-term care and lawyers professional liability products. Net written premiums for all other specialty lines businesses increased modestly or were essentially flat when compared with the prior year.


      Personal Lines. The personal lines combined ratio for 2006 was 96%, compared to 91% for 2005. The loss and LAE ratio increased to 64% in 2006, compared to 62% in 2005, primarily due to favorable items in 2005. The personal lines 2005 loss and LAE ratio included the benefit of the settlement of the retiree medical plan and the favorable impact of the reallocation of IBNR reserves to run-off, which each reduced the loss and LAE ratio by approximately one point. The expense ratio increased to 32% in 2006, compared to 29% in the prior year, mainly due to increased incentive compensation expenses of approximately one point in 2006 and the benefit of the settlement of the retiree medical plan in 2005, which decreased the 2005 expense ratio by approximately two points. In addition, the 2006 expense ratio was higher than the 2005 expense ratio by approximately one point as expense reductions were not proportional to reductions in earned premiums.

      Net written premiums for personal lines decreased by 12% to $801 million in 2006 compared to $910 million in 2005. The decrease was primarily attributable to reduced writings at AutoOne due to the size of New York’s assigned risk pool significantly decreasing and reduced writings in traditional personal lines due to an increasingly competitive auto market and state-mandated rate decreases in Massachusetts. With respect to the New York assigned risk pool, market trends indicate that assigned risk volumes are expected to decline to approximately $200 million in 2007, down from $240 million in 2006, $383 million in 2005 and $629 million in 2004. Assigned risk volumes in New Jersey are also expected to decline. Market trends indicate that the assigned risk pool in New Jersey is expected to decline to approximately $140 million in 2007, down from $175 million in 2006, $275 million in 2005 and $375 million in 2004. OneBeacon expects a continued reduction in AutoOne’s premium volume in 2007 reflective of these trends.

      Commercial Lines. The commercial lines combined ratio for 2006 was 95% compared to 97% for 2005. Lower catastrophe losses caused the commercial lines 2006 combined ratio to decrease six points from 2005. Commercial lines 2006 results included $31 million in current and prior accident years).year catastrophe losses, which included $21 million in losses incurred from hurricanes Katrina, Rita and Wilma, compared to $64 million in 2005, which included $56 million in losses incurred from hurricanes Katrina, Rita and Wilma. Partially offsetting this decrease was the favorable impact of one point related to the benefit of the settlement of the retiree medical plan in 2005 and two points related to the reallocation in 2005 of IBNR reserves to run-off.

      Net written premiums for commercial lines increased by 10% to $718 million in 2006 compared to $654 million in 2005, as net written premiums increased for both the middle market division and the small business division. The 2004 development related primarily to personal auto liability, general liability and multiple peril reserves dueincrease in part to emerging trendsnet written premiums in claimsthe middle market division was experienced in OneBeacon's run-off operations,property and inland marine products as



      well as national accountat OBSP. The increase in small business was experienced in small business package products.

      Other Lines. For 2006, other lines generated an underwriting loss of $44 million compared to an underwriting loss of $133 million in 2005. The 2005 results included $107 million in adverse development, mainly from 2002 and program claims administered by third parties. These claim trends principally included prior accident years, which was primarily due to higher than anticipated defense costs and higher damages from liability assessments. The 2003 developmentassessments in general liability and multiple peril lines. As described above, 2005 also included a reallocation of $34 million of IBNR reserves from ongoing lines of business to run-off.

      OneBeacon Results - Year Ended December 31, 2005 versus Year Ended December 31, 2004

      Overview

      OneBeacon’s pre-tax income for 2005 was primarily$332 million, compared to pre-tax income of $223 million for 2004, and its combined ratio was 98% for 2005, compared to 99% for 2004.

      Higher catastrophe losses caused OneBeacon’s 2005 combined ratio to increase approximately three points from 2004. OneBeacon’s 2005 results included $82 million in catastrophe losses, which included $69 million in catastrophe losses related to construction defect claims. Adverse developmenthurricanes Katrina, Rita and Wilma, compared to $31 million of catastrophe losses in 20042004. In addition, OneBeacon’s 2005 results included a $54 million gain from the settlement of its retiree medical plan, which reduced the 2005 combined ratio by three points, and 2003, respectively, was partially offset by thea release of approximately $20 million and $30 million of the New York assigned risk liability due to the shrinking New York assigned risk pool.

              OneBeacon's total revenues for 2004 increased by 10% compared to 2003, due principally to an increase in earned premiums resulting primarily from the Atlantic Specialty Transaction. Total revenues for 2004 were also impacted by an increase in other revenues due mainly to the commencement of two new private equity funds managed by Tuckerman Capital, a group of private equity funds that are consolidated as a result of White Mountains' significant investment in the funds.

              OneBeacon's total expenses for 2004 increased 13% compared to 2003, primarily as a result of increased incentive compensation accruals driven by the 41% rise in White Mountains' share price in 2004, partially offset by the release of $20 million of the New York assigned risk liability. The release of this liability resulted frompool, which reduced the continued effects of favorable revisions2005 combined ratio by one point. OneBeacon’s 2005 and 2004 results also include $95 million and $100 million, respectively, in adverse development, primarily relating to 2002 and prior accident years, which impacted the structure of credit programs. General and administrative expenses were highercombined ratio by approximately four points in each year.

      OneBeacon’s total revenues decreased 9% in 2005 to $2,534 million, compared to $2,787 million in 2004, due mainlyprincipally to an 11% decline in earned premiums in 2005. The decrease in earned premiums was partially due to lower commercial lines premiums resulting from the commencementsale of two new private equity funds managed by Tuckerman Capital, a groupthe renewal rights on most of private equity funds that are consolidated asOneBeacon’s non-Atlantic Mutual New York commercial lines business to Tower Insurance Group late in 2004. As a result of White Mountains' significantthis transaction, approximately $110 million of premiums written in 2004 were subject to this renewal rights agreement and were not written by OneBeacon during 2005. OneBeacon’s commercial lines also had a one-time premium increase of approximately $135 million in 2004 from the assumption of unearned premium from the Atlantic Specialty transaction.


      In addition, personal lines premium decreased in 2005 due to lower volumes in Massachusetts and New York. New Jersey Skylands Insurance also had lower premiums in 2005 as compared to 2004.

      Net realized investment gains for 2005 included a realized loss of $55 million due to an other-than-temporary impairment with respect to OneBeacon’s investment in Montpelier Re common shares. During 2005, the funds.market value of Montpelier Re common shares decreased from $38.45 per share to $18.90 per share. OneBeacon’s original cost of this investment in 2001 was $105 million, which was subsequently increased by $65 million in equity in earnings recorded from 2001 to March 2004, the period in which OneBeacon accounted for the investment under the equity method of accounting. The impairment charge represented the difference between OneBeacon’s GAAP cost of $170 million and the investment’s fair value of $116 million at December 31, 2005.

      Other revenue for 2005 included $34 million in gains recorded from the sales of two subsidiaries, NFU and Traders and Pacific Insurance Company. During the fourth quarter of 2004, OneBeacon sold two of its subsidiaries, Potomac Insurance Company of Illinois ("Potomac"(“Potomac”) and Western States Insurance Company ("(“Western States"States”), as well as its boiler inspection service business, and recognized gains on the salesfor a total gain of $22 million throughthat was recognized in other revenues.revenue.

      As a result of an actuarial review completed in the fourth quarter of 2005, OneBeacon reallocated some of its IBNR reserves from some of the ongoing lines of business to run-off operations. This shifted $34 million of IBNR reserves from specialty lines ($10 million), commercial lines ($12 million) and personal lines ($12 million) to run-off operations. This adjustment had no impact on OneBeacon’s total combined ratio.

      Specialty Lines.The specialty lines combined ratio for 2005 was 85%, compared to 90% for 2004, compared to2004. The decrease in the 2003 combined ratio of 86%. The 2004 combined ratio was higher than 2003 primarilymainly due to the reallocation of IBNR reserves to run-off operations and the settlement of the retiree medical plan, which reduced the combined ratio by a total of five points. Specialty lines results in 2005 included $13 million of losses relating($9 million at IMU and $4 million atAgri) related to hurricanes Katrina, Rita and Wilma, which unfavorably impacted the combined ratio by three points. In 2004, the combined ratio for specialty lines was adversely impacted by two points ($11 million) from the four stormshurricanes in the southeastern United States that impacted IMU and better than expected weather losses in 2003. WrittenStates.

      Net written premiums for specialty lines were up 16%2005 decreased by 3% to $549 million, compared to $566 million in 2004, driven by growth in writingsas increases at OBPP, which included $28 million of net written premium from a renewal rights agreement with Chubb Specialty Insurance that took effect during the third quarter of 2005 were offset by the sale of NFU in the third quarter of 2005.

      Personal Lines. The personal lines combined ratio for 2005 was 91%, compared to 91% for 2004. The loss and AutoOne Insurance,LAE ratio decreased in 2005 primarily due to strong homeowners results, aided by favorable catastrophe experience resulting from a relatively mild winter and lack of northeast wind events, as well as lower frequencies in OneBeacon’s legacy auto business. The settlement of the introduction of OBSP in 2004, a new division offering coverages toretiree medical plan favorably impacted the excess and surplus property market.

              Personal Lines.    The2005 combined ratio for personal lines for 2004 was 94%, compared toby three points. In addition, the 2003 combined ratio of 91%. The 2004 personal lines combined ratio was adverselyfavorably impacted by seven points as a resultone point from the reallocation of increased incentive compensation accruals, partially offset by three points dueIBNR reserves to the reduction of the New York assigned risk liability. The 2003 combined ratio benefitted by four points due to a reduction of the New York assigned risk liability. Premiums in this line grew 7% due in part to improved production of new business and increased retention levels and also $47 million in premiums assumed from New Jersey Skylands Insurance Association through a quota-share reinsurance agreement.run-off operations.

      Commercial Lines.The commercial lines combined ratio for commercial lines for 20042005 was 97%, compared to 98% for 2004. The reallocation of IBNR reserves to run-off operations and the 2003settlement of the retiree medical plan reduced the combined ratio in 2005 by a total of 95%.five points. Commercial lines results in 2005 included $56 million of losses related to hurricanes Katrina, Rita and Wilma, which impacted the combined ratio by nine points, while 2004 included storm losses of $13 million, which impacted the combined ratio by two points. The commercial lines 2004 combined ratio was a bit higher as a result ofalso adversely impacted by transition and integration costs related to the Atlantic Specialty Transactiontransaction and adverse results from its non-Atlantic Mutual New York commercial lines book. The 2004 loss ratio includes two points relating to the four storms

      Other Lines. Other lines for 2005 included approximately $107 million in the southeastern United States,adverse development, mainly from 2002 and prior accident years, which primarily related to Atlantic Specialty business in that area. Excluding these losses, the commercial lines loss ratio significantly improved. Premiums in this line grew by 89%was primarily due to the Atlantic Specialty Transaction.

              During the third quarterhigher than anticipated defense costs and higher damages from liability assessments in general liability and multiple peril lines. In addition, during 2005, OneBeacon reallocated $34 million of 2004, OneBeacon entered into an agreement to sell the renewal rights to mostIBNR reserves from some of its non-Atlantic Mutual New York commercialongoing lines of business to Tower Insurance Group. The transaction, effective with December 1, 2004 renewals, will remove approximately $110 million of premiums over the next year.run-off lines.



      OneBeacon Results—Year Ended December 31, 2003 versus Year Ended December 31, 2002

      Overview

              OneBeacon's pretax income for 2003 was $405 million, compared to pre-tax income of $200 million for 2002, and its GAAP combined ratio was 98% for 2003 compared to 107% for 2002. All of OneBeacon's ongoing businesses—specialty, personal and commercial lines—delivered combined ratios below 100% in 2003 and, in the second half of 2003, its premiums from its ongoing businesses grew for the first time since the OneBeacon Acquisition.

              OneBeacon's total revenues for 2003 declined by 21% compared to 2002, due principally to a 25% decline in earned premiums, resulting primarily from a reduction in premiums assumed under the Liberty Agreement. Total revenues for 2003 were also impacted by a 29% decrease in net investment income due to the runoff of loss reserves as well as the reduced interest rate environment. Other revenues increased significantly in 2003 due mainly to fee revenue generated by New Jersey Skylands Management LLC and certain consolidated limited partnerships.

              OneBeacon's total expenses for 2003 declined by 29% compared to 2002, primarily as a result of reduced premium writings and improved underwriting performance. Total expenses in 2003 included a net $147 million reserve increase in OneBeacon's runoff operations, primarily related to prior year construction defect claims, that was partially offset by an approximate $30 million release of the New York assigned risk liability due to the shrinking New York assigned risk pool. General and administrative expenses increased significantly in 2003 due mainly to expenses generated by New Jersey Skylands Management LLC and certain consolidated limited partnerships.

              During the fourth quarter of 2003, OneBeacon sold one of its subsidiaries, National Farmers Union Standard Insurance Company ("NFU Standard"), for $22 million and recognized a $9 million gain on the sale through other revenue.

              Specialty Lines.    The combined ratio in 2003 was 86%, a six point improvement over the 92% reported in 2002. This was driven by good underwriting results across OneBeacon's various specialty businesses, as well as favorable development in AutoOne Insurance's prior year reserves, which positively impacted the combined ratio by two points. OneBeacon wrote specialty lines premiums of $734 million in 2003, up 5% over 2002, mostly due to an increase in business written by OBPP and IMU.

              Personal Lines.    The combined ratio in 2003 was 91%, a six point improvement over the 97% reported in 2002 as price increases achieved in 2002 and 2003 flowed through into underwriting results. In addition, the 2003 period reflected the reduction in OneBeacon's New York assigned risk liability, discussed above, which lowered the combined ratio by three points. OneBeacon's personal lines written premium volume for 2003 decreased 20% from 2002, primarily due to re-underwriting efforts such as actions to reduce exposure to windstorms on property located in coastal areas. Also contributing to the decrease were declines in written premiums relating to the transfer of OneBeacon's private passenger automobile business in New Jersey to New Jersey Skylands Insurance Association in 2002.

              Commercial Lines.    The combined ratio in 2003 was 95%, a five point improvement over the 100% reported in 2002 as the Company's efforts to re-underwrite its book took hold, partially offset by prior year reserve development of three points. OneBeacon's commercial lines written premium volume for 2003 decreased 6% from 2002, primarily due to the continued effects of actions taken to reduce the concentration of risks subject to terrorism, such as reducing total insured values in 11 major cities, and reductions in workers compensation writings.

              Run-off Operations.    Pursuant to the Liberty Agreement, Liberty Mutual assumed control of OneBeacon's claims offices in the regions subject to the Liberty Agreement and was responsible for servicing claims from the OneBeacon policies written prior to November 1, 2001, as well as policies



      which renewed in those regions since that date. Effective July 11, 2003, the servicing agreement with Liberty Mutual was amended and OneBeacon took back substantially all remaining outstanding claims related to policies written prior to the Liberty Agreement.

              During the second quarter of 2003, OneBeacon claims and actuarial personnel noticed an unusual spike in case reserves related to the policies taken back from Liberty Mutual. The spike was isolated primarily to incurred losses on construction defect claims which were approximately $38 million higher than expected. There were 924 new claims, 32% higher than expected. The four states with the largest number of new construction defect claims were California, Nevada, Colorado and Arizona (345 of the total 924 new claims). As a result, OneBeacon claims and actuarial personnel undertook a study to determine the cause of the increase. This study, which was completed in the third quarter of 2003, indicated that most of the increase in activity was due to differences in case reserving philosophies between OneBeacon's and Liberty's claims adjusters, such as the identification and coding of construction defect claims. However, the study also indicated that some of the increase in activity related to an increase in the severity of construction defect claims stemming from increased litigation and resulting adverse court decisions. As a result, OneBeacon recorded an increase for construction defect claim reserves of $98 million in the third quarter of 2003. SeeConstruction Defect Claims in CRITICAL ACCOUNTING ESTIMATES below for further background on construction defect claims.

      White Mountains Re

      Financial results and GAAP combined ratios for White Mountains Re for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 follows:

       
       Year Ended December 31,
      Millions

       2004
       2003
       2002
       Gross written premiums $1,933.3 $1,414.9 $982.0
        
       
       
       Net written premiums $1,246.3 $885.7 $688.2
        
       
       
       Earned insurance and reinsurance premiums $1,265.5 $845.8 $635.0
       Net investment income  98.5  50.4  51.5
       Net realized investment gains  29.6  7.7  30.3
       Other revenue  36.1  75.5  53.6
        
       
       
        Total revenues  1,429.7  979.4  770.4
        
       
       
       Losses and LAE  918.9  557.6  442.2
       Insurance and reinsurance acquisition expenses  271.8  198.0  161.2
       Other underwriting expenses  122.9  57.8  41.0
       General and administrative expenses  15.1  19.6  20.6
       Accretion of fair value adjustment to loss and LAE reserves  10.1    
       Interest expense on debt  3.8  2.0  2.0
        
       
       
        Total expenses  1,342.6  835.0  667.0
        
       
       
      Pretax earnings $87.1 $144.4 $103.4
        
       
       
       
       Years Ended December 31,
       
       
       2004
       2003
       2002
       
      GAAP ratios:       
       Loss and LAE 73%66%70%
       Expense 31%30%32%
        
       
       
       
        Total Combined 104%96%102%
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Gross written premiums

       

      $

      1,624.5

       

      $

      1,981.3

       

      $

      1,933.3

       

      Net written premiums

       

      $

      1,290.0

       

      $

      1,304.1

       

      $

      1,246.3

       

      Earned insurance and reinsurance premiums

       

      $

      1,241.2

       

      $

      1,371.6

       

      $

      1,265.5

       

      Net investment income

       

      182.7

       

      148.9

       

      98.5

       

      Net realized investment gains

       

      59.0

       

      76.8

       

      29.6

       

      Other revenue

       

      47.8

       

      33.5

       

      36.1

       

      Total revenues

       

      1,530.7

       

      1,630.8

       

      1,429.7

       

      Losses and LAE

       

      884.6

       

      1,237.9

       

      918.9

       

      Insurance and reinsurance acquisition expenses

       

      287.2

       

      279.6

       

      271.8

       

      Other underwriting expenses

       

      94.7

       

      107.0

       

      122.9

       

      General and administrative expenses

       

      24.2

       

      12.4

       

      15.1

       

      Accretion of fair value adjustment to loss and LAE reserves

       

      1.5

       

      10.9

       

      10.1

       

      Interest expense on debt

       

      1.5

       

      .4

       

      3.8

       

      Total expenses

       

      1,293.7

       

      1,648.2

       

      1,342.6

       

      Pre-tax earnings (loss)

       

      $

      237.0

       

      $

      (17.4

      )

      $

      87.1

       

       

       

      Years Ended December 31,

       

       

       

      2006

       

      2005

       

      2004

       

      GAAP ratios:

       

       

       

       

       

       

       

      Loss and LAE

       

      71

      %

      90

      %

      73

      %

      Expense

       

      31

      %

      28

      %

      31

      %

      Total Combined

       

      102

      %

      118

      %

      104

      %

      White Mountains Re Results—Results - Year Ended December 31, 20042006 versus Year Ended December 31, 20032005

      White Mountains Re'sRe’s pre-tax income for 2006 was $237 million compared to a pre-tax loss of $17 million for 2005, and its GAAP combined ratio increasedwas 102% for 2006 compared to 118% for 2005. The improved combined ratio and the increase in pre-tax income resulted primarily from 96% in 2003 to 104% in 2004, due primarily to $135significantly lower catastrophe losses. During 2006, White Mountains Re recorded $86 million of claims incurredunfavorable development, net of reinstatement premiums and reinsurance, related to hurricanes Katrina, Rita and Wilma and $137 million in losses and $9 million of forgone override commissions related to the Olympus reimbursement. During 2005, White Mountains Re recognized $351 million in pre-tax losses, net of reinstatement premiums and reinsurance from hurricanes Katrina, Rita and Wilma. 2005 also included $57 million of other significant property catastrophe eventslosses, primarily from European storm Erwin and floods in Europe.

      Excluding the unfavorable development from Katrina, Rita and Wilma and the Olympus reimbursement, White Mountains Re’s underwriting units performed well in 2006, reflecting generally more favorable weather conditions and continued favorable prices, terms and conditions within the reinsurance marketplace. Excluding the additional losses from hurricanes Katrina, Rita and Wilma and the Olympus reimbursement, favorable development on prior year reserves of $11 million resulted primarily from continued favorable run off of recent underwriting years at Sirius International of $46 million and favorable development of $19 million arising from Folksamerica’s agriculture line of business, offset by unfavorable development of $55 million from casualty losses associated with the Risk Capital acquisition.

      White Mountains Re’s 2006 gross written premiums decreased by 18% to $1,625 million and net written premiums decreased by 1% to $1,290 million from $1,304 million in 2005. White Mountains Re reduced its overall property exposure and Folksamerica non-renewed its excess offshore energy and marine business in the Gulf of Mexico starting on January 1, 2006, which caused gross written premiums to decline substantially in 2006 versus


      2005. All of the non-renewed excess offshore energy and marine business was subject to Folksamerica’s reinsurance treaty with Olympus, under which Folksamerica ceded up to 75% of this business in 2005. As a result, the impact on the change in White Mountains Re’s net written premiums from 2005 to 2006 was significantly less than the impact on the change in its gross written premiums over the same period. Gross and net written premiums were also lower during 2006 due to lower reinstatement premiums on property catastrophe reinsurance, which had primarily resulted from reinstated coverage after hurricanes Katrina and Rita in 2005, and lower premiums from Sirius America, which was sold in August 2006. Sirius America contributed $71 million and $39 million of gross and net written premiums, respectively, in 2006, compared to $248 million and $87 million, respectively, in 2005. Additionally, gross and net written premiums on casualty lines were lower in 2006, due mainly to pricing, terms and conditions that did not meet White Mountains Re’s pricing guidelines and due to higher ceding company retentions. These decreases were partially offset by increases in certain non-catastrophe exposed classes, particularly in specialty lines.

      White Mountains Re’s net investment income increased by $34 million in 2006 as a result of higher overall yields and a larger investment asset base, principally due to contributions from White Mountains. Other underwriting expenses decreased in 2006 by $12 million, or 11%, from 2005, primarily due to a reduction in unallocated loss adjustment expense reserves of approximately $7 million during the first quarter of 2006 resulting from an evaluation of the remaining run-off contracts at Scandinavian Re, as well as a reduction in incentive compensation accruals. General and administrative expenses increased to $24 million in 2006 from $12 million in 2005. The increase is primarily due to accruals related to the relocation of the underwriting advisory operations from Ireland to Bermuda and costs associated with expanding the Bermuda advisory operations.

      Accretion of fair value adjustment to loss and LAE reserves decreased in 2006 by $9 million, or 86%, from $11 million in 2005 as a result of a change in the rate of accretion of the fair value adjustment to loss and LAE reserves that was established in the purchase accounting for the Sirius Acquisition. The change in accretion resulted from the aforementioned evaluation of the remaining run-off contracts at Scandinavian Re and will be made prospectively over the remaining amortization period.

      White Mountains Re recognized fee income of $12 million from Olympus and Helicon in 2006, $9 million of which was recorded as other revenues, compared to $61 million of fee income from Olympus in 2005, $28 million of which was recorded as other revenues. The decrease in fee income was primarily the result of a reduction in amounts ceded to Olympus and Helicon in 2006 compared to 2005 and due to FHC waiving $9 million of override commission due from Olympus in accordance with the Olympus reimbursement. Other revenues in 2006 also included a $14 million gain from the sale of Sirius America and $21 million of realized foreign exchange gains. In 2005, other revenue also included a $5 million gain from the sale of California Indemnity Insurance Company, a wholly-owned subsidiary of White Mountains Re acquired in 2004 as part of the Sierra acquisition.

      Olympus reimbursement. In June 2006, following the receipt of new claims information reported from several ceding companies and subsequent reassessment of the ultimate loss exposures, White Mountains Re increased its gross loss estimates for hurricanes Katrina, Rita and Wilma by $201 million. This was mostly on Folksamerica Re’s off-shore energy and marine exposures attributable to retrocessional arrangements and business interruption coverage. As a result, Folksamerica Re set its gross loss and LAE reserves as of June 30, 2006 on offshore energy and marine exposures for hurricanes Katrina and Rita at full contract limits. Starting January 1, 2006, Folksamerica Re non-renewed its excess offshore energy and marine business in the Gulf of Mexico.

      Under the terms of Folksamerica Re’s 2005 quota share reinsurance treaty with Olympus, $139 million of the loss, net of reinstatement premiums, from hurricanes Katrina, Rita and Wilma recorded in the second halfquarter of 2004. These catastrophes,2006 was ceded to Olympus. However, FHC entered into an indemnity agreement with Olympus on June 16, 2006, under which are discussed further below, increasedit agreed to reimburse Olympus for up to $137 million of these losses, which were recorded as loss and LAE during the combined ratio in 2004second quarter of 2006. FHC also waived override commissions on premiums earned by 11 points. In general,Olympus after March 31, 2006 for reinsurance contracts recommended by White Mountains Re has experienced favorablewith an effective date of December 31, 2005 and prior. White Mountains Re expects that the commission waivers will total approximately $10 million. Folksamerica Re will continue to cede 35% of its 2007 underwriting conditionsyear short-tailed excess of loss business, mainly property and marine, with Olympus and Helicon sharing approximately 55% and 45%, respectively, in 2007. Olympus will continue to be responsible to pay losses on exposures that have been ceded to it and will continue to receive cessions from Folksamerica Re.


      White Mountains Re Results - Year Ended December 31, 2005 versus Year Ended December 31, 2004

      White Mountains Re’s pre-tax loss for 2005 was $17 million, compared to pre-tax income of $87 million for 2004, and its GAAP combined ratio was 118% for 2005, compared to 104% for 2004. White Mountains Re’s 2005 results included pre-tax losses, net of reinstatements and reinsurance, of $351 million from hurricanes Katrina, Rita and Wilma and $57 million of other significant property catastrophe losses, primarily from European storm Erwin and floods in Europe, which added a total of 30 points to the past three underwriting years. Earningscombined ratio. In addition, White Mountains Re recorded $51 million of net unfavorable loss reserve development in 2005 (discussed below), which contributed 4 points to the loss ratio. During 2005, earnings from business segments not impacted by the property catastrophe events and earnings from the recently completed Sirius Acquisition, haveincreased net investment income partially offset the impact of these natural disasters. Net written premiums, total revenues, and total expenses were all up substantiallylosses. Additionally, White Mountains Re’s expense ratio decreased to 28% in 2005, from 31% in 2004, due mainly to the Sirius Acquisition.

              Gross written premiums increased $518 million, or 37% from 2003 toa decrease in incentive compensation accruals. White Mountains Re’s 2004 and net written premiums increased $361 million, or 41% for the same period. This increase is due primarily to the Sirius Acquisition, which contributed $612results included $135 million of gross written premiumspre-tax losses, net of reinstatements and $418 million of net written premiums during 2004. Included in these amounts is the U.S. program business written by Sirius America totaling $216 million of gross written premiums and $85 million of net written premiums. Additionally, in late 2003, White Mountains Re, through Folksamerica, entered into the CNA Re agreement and established a Chicago underwriting office. Annual gross written premiums for the 2004 underwriting year resultingreinsurance, from this transaction and the related opening of the Chicago underwriting office were approximately $177 million, of which $129 million was recorded as gross written premium and $91 million as net written premium for the year ended December 31, 2004. Partially offsetting the increases resulting from these transactions was the cancellation of several large casualty treaties at Folksamerica whose pricing or terms did not meet White Mountains Re's underwriting guidelines.

              There were significant levels of property catastrophe activity during the last half of 2004, including the four hurricanes whichthat affected the Southeastsoutheastern United States and the Caribbean, where White Mountains Re has historically been a significant participant in the property reinsurance market. Additionally, Sirius International was exposed to losses from the devastating tsunami that impacted South Asia, in December 2004. which added a total of 11 points to the combined ratio.

      White Mountains Re believes its underwriting disciplineRe’s 2005 gross written premiums increased by 3% to $1,981 million and risk management approach helpednet written premiums increased by 5% to contain these losses$1,304 million from 2004. The increase was due primarily to manageable levels. This significant property catastrophe activitySirius International, which was acquired in the second quarter of 2004 and contributed nine months of premiums in 2004 versus twelve months in 2005, partially offset by decreased premium volume at both Sirius International and Folksamerica as a result of the general softness in the reinsurance market prior to hurricanes Katrina, Rita and Wilma.

      White Mountains Re’s net investment income increased in 2005 compared to 2004 primarily as a result of the inclusion of Sirius International’s investment portfolio, which was acquired during the last halfsecond quarter of 2004, resultedfor the entire year of 2005. Other underwriting expenses decreased in $135 million of pre-tax losses, including2005 by $16 million, related to the tsunami. There was no significant property catastrophe activity in 2003.or 13%, from 2004.

              During 2004, White Mountains Re recorded $11$51 million of net unfavorable loss reserve development in 2005, the majority of which contributed 1 point to the loss ratio in 2004, as compared to $46 million, or 5 points in 2003. The 2003 unfavorable development is described in further detail in the section titledresulted from a detailed, ground-up asbestos study completed by White Mountains Re Results—Year Ended December 31, 2003 versus Year Ended December 31, 2002, below.in 2005. The majoritystudy analyzed all insureds that have reported over $250,000 of asbestos claims to Folksamerica and a significant sample of all other insureds with reported asbestos claims of less than $250,000. Comparing estimates generated by the unfavorable development recordedstudy to Folksamerica exposed limits by underwriting year led to an increase of approximately $50 million in 2004 resulted from certain discontinued lines at Folksamerica as well as run-off operations acquired as partIBNR during the third quarter of the Sirius Acquisition.2005. This unfavorable development was partially offset by favorable development in the Sirius International reserve portfolio stemmingof approximately $12 million, mainly from the three most recent underwriting years, and is indicative of the favorable terms and conditions that have existedyears. Included in the global reinsurance marketplace during that time. Additionally, White Mountains Re recorded $10 million ofnet unfavorable loss development on itsin 2005 was $23 million from workers compensation reserves acquired in 2004 as part of the Sierra acquisition in 2004. This adverse developmentacquisition. However, this amount was offset dollar-for-dollar by a decrease in the balance due under the adjustable note discussedissued in Note 2—Significant Transactions.conjunction with this acquisition.

      White Mountains Re receives fee income on reinsurance placements referred to Olympus and is entitled to a profit commission based on net underwriting profits on referred business. The additional capacity provided by the reinsurance relationship with Olympus supports White Mountains Re's ability to offer significant reinsurance protection.During 2005 and 2004, White Mountains Re recognized netearned $61 million and $69 million, respectively, of fee income of $69 million from OlympusOlympus. The decrease in 2004 asfee income from the prior period is primarily due to the significant loss events in 2005, including hurricanes Katrina, Rita and Wilma, which resulted in White Mountains Re not earning any profit commission in 2005 compared to $98earning $12 million of profit commission in 2003.2004. The decline in the fee income earned is



      due primarily to the negative impact of the four hurricanes on the profit commission arrangement betweenwith Olympus is subject to a deficit carryforward whereby net underwriting losses from one underwriting year carryover to future underwriting years. As a result of the significant loss events in 2005, Olympus recorded a substantial net underwriting loss for the year. Accordingly, White Mountains Re and Olympus.does not expect to record profit commissions from Olympus for the foreseeable future.

      White Mountains Re Results—Year Ended December 31, 2003 versus Year Ended December 31, 2002

              White Mountains' Re's pretax income was $144 million for 2003, an increase of 40% over the $103 million recorded in 2002. White Mountains Re's GAAP combined ratio improved to 96% for 2003, from 102% for 2002. The improvement in White Mountains Re's combined ratio resulted primarily from more favorableEffective January 1, 2006, Folksamerica renewed its quota-share reinsurance arrangements with Olympus on modified terms and conditions Sirius International terminated its agreement with Olympus. The 2005 and prior underwriting year business will continue to run-off with Olympus. For a further discussion, see “Reinsurance Protection”, under “WHITE MOUNTAINS RE” in the reinsurance marketplace, and fewer catastrophe losses affecting White Mountains Re in 2003 as compared to 2002.

              White Mountains Re's gross written premiums increased 44% from 2002 to 2003, while net written premiums increased 29% and earned premiums increased 33%. The increases in net written and earned premiums were due to increased pricing on White Mountains Re's expiring and renewed contracts, increased shares on renewed contracts and new contracts resulting from the increased demand of reinsurance buyers for placing reinsurance with responsible, well-capitalized reinsurers.

              White Mountains Re's total revenues were up 27% in 2003 over 2002, primarily driven by a 33% increase in earned premiums. The increase in earned (and net written) premiums was due to increased pricing on White Mountains Re's expiring and renewed contracts, increased shares on renewed contracts and new contracts resulting from the increased demand of reinsurance buyers for placing reinsurance with responsible, well-capitalized reinsurers. Also contributing to the increase in revenues in 2003 was a $49 million increase ($98 million in 2003 vs $49 million in 2002) in advisory fees and profit commissions received by White Mountains Re on reinsurance placements referred to Olympus, due principally to an increase in the volume of business ceded to Olympus in 2003.

              White Mountains Re experienced approximately $46 million of unfavorable loss reserve development during 2003, primarily due to strengthening of A&E reserves and reserves on Risk Capital casualty lines. White Mountains Re's 2003 loss development for A&E exposures was due to the completion of a detailed A&E market share study. This study compared Folksamerica's share of industry paid losses to estimated industry carried reserves and resulted in Folksamerica increasing its IBNR by approximately $25 million.



      EsuranceItem 1.

              Esurance's53




      Esurance

      Esurance’s financial results and GAAP combined ratios for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 follows:

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
       Gross written premiums $201.3 $116.4 $53.0 
        
       
       
       
       Net written premiums $199.4 $116.4 $53.0 
        
       
       
       
       Earned insurance and reinsurance premiums $176.5 $99.9 $40.8 
       Net investment income  3.5  1.3  1.2 
       Net realized investment gains  1.1  .2   
       Other revenue  2.2  .3  1.6 
        
       
       
       
        Total revenues  183.3  101.7  43.6 
        
       
       
       
       Losses and LAE  122.4  81.0  36.6 
       Insurance and reinsurance acquisition expenses  29.4  18.8  9.7 
       Other underwriting expenses  27.7  20.4  22.4 
        
       
       
       
        Total expenses  179.5  120.2  68.7 
        
       
       
       
      Pretax earnings (loss) $3.8 $(18.5)$(25.1)
        
       
       
       
       
       Years Ended December 31,
       
       
       2004
       2003
       2002
       
      GAAP ratios:       
       Loss and LAE 69%81%89%
       Expense 33%39%80%
        
       
       
       
        Total Combined 102%120%169%
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Gross written premiums

       

      $

      599.5

       

      $

      351.9

       

      $

      201.3

       

      Net written premiums

       

      $

      595.9

       

      $

      349.1

       

      $

      199.4

       

       

       

       

       

       

       

       

       

      Earned insurance and reinsurance premiums

       

      $

      527.5

       

      $

      306.8

       

      $

      176.5

       

      Net investment income

       

      18.4

       

      9.8

       

      3.5

       

      Net realized investment gains

       

      6.9

       

      2.1

       

      1.1

       

      Other revenue

       

      7.4

       

      3.0

       

      2.2

       

      Total revenues

       

      560.2

       

      321.7

       

      183.3

       

       

       

       

       

       

       

       

       

      Losses and LAE

       

      383.9

       

      206.2

       

      122.4

       

      Insurance and reinsurance acquisition expenses

       

      135.3

       

      90.8

       

      30.3

       

      Other underwriting expenses

       

      48.8

       

      37.2

       

      26.8

       

      General and administrative expenses

       

      0.2

       

       

       

      Total expenses

       

      568.2

       

      334.2

       

      179.5

       

      Pre-tax earnings (loss)

       

      $

      (8.0

      )

      $

      (12.5

      )

      $

      3.8

       

       

       

      Years Ended December 31,

       

       

       

      2006

       

      2005

       

      2004

       

      GAAP ratios:

       

       

       

       

       

       

       

      Loss and LAE

       

      73

      %

      67

      %

      69

      %

      Expense

       

      35

      %

      42

      %

      33

      %

      Total Combined

       

      108

      %

      109

      %

      102

      %

      Esurance Results—Results - Year Ended December 31, 20042006 versus Year Ended December 31, 20032005

      Esurance’s pre-tax loss for 2006 was $8 million compared to a pre-tax loss of $13 million for 2005. Esurance’s GAAP combined ratio was 108% for 2006 compared to 109% for 2005. Esurance’s loss ratio increased to 73% in 2006 from 67% in the prior period, due to rate reductions and one point of unfavorable development on loss reserves in 2006 compared to three points of favorable development on loss reserves in the prior year. The expense ratio decreased to 35% in 2006 from the prior period expense ratio of 42% due to lower acquisition costs and additional operating efficiencies.

      Net written premium increased to $596 million, a 71% increase from 2005. As of December 31, 2006, Esurance’s in-force policy count totaled 372,688, a 76% increase over 2005. During 2006, Esurance continued to expand through national and local television advertising, online marketing, direct mail, and online agency channels. More site traffic and improved conversion rates lowered the costs of acquiring new customers during 2006.

              Esurance'sEsurance writes business in 24 states. During 2006, Esurance’s largest states were California (with 19% of direct premium written), Florida (17%), New York (9%), Texas (6%) and Michigan (6%).

      Esurance Results - Year Ended December 31, 2005 versus Year Ended December 31, 2004

      Esurance’s pre-tax loss for 2005 was $13 million, compared to pretax income of $4 million for 2004 represented an improvement over2004. Esurance’s GAAP combined ratio was 109% for 2005, compared to 102% for 2004. Esurance’s loss ratio decreased to 67% in 2005, from 69% in the pretax loss of $19prior year, despite $2 million in 2003. Esurance's 2004losses sustained from hurricane Wilma during 2005. The decrease in the loss ratio resulted primarily from improved claims performance and increased pricing sophistication. The expense ratio increased to 42% in 2005, from 33% in the prior year, mainly due to higher acquisition expenses from Esurance’s marketing programs, driven by increased competition for new customers. The combined ratio improved to 102% from 120% in 2003 due to improvements in both loss and expense ratios. Esurance's loss ratio improvement resultedwas also adversely impacted by approximately 3 points from the continued rollout and refinementadoption of Esurance's proprietary auto insurance program. Loss ratio improvement also resulteda new long-term incentive compensation plan in 2005.

      Net written premiums increased to $349 million in 2005, a 75% increase from better claims performance, driven by the transition from a third party administrator to an in-house claims operation in 2003, as well as 3 points of favorable development on loss reserves.

              The auto program, combined with Esurance's self-service, web-enabled operating platform, allowed Esurance to increase premium volume and in-force policy count while reducing the expense ratio from 39% to 33%.2004. As of December 31, 2004, Esurance's2005, Esurance’s in-force policy count was 118,513 policies,totaled 211,851, a 60%79% increase over 2004, and it wrote business in twenty-two states. For the year ended December 31, 2003. Increased advertising, particularly in radio2005, Esurance’s largest states were Florida (with 20% of direct premium written), California (20%), Texas (9%), New York (8%) and TV, drove policy count growth.

      Esurance Results—Year Ended December 31, 2003 versus Year Ended December 31, 2002

              The trends described above that drove Esurance's favorable results in 2004 relative to 2003 also benefitted the 2003 results in relation to 2002. Thus, the pretax loss for Esurance decreased by $7 million in 2003 and the combined ratio fell 49 points, while net written premiums more than doubled.Michigan (7%).



      Other Operations

      Other Operations consists of the operations of the Company, and the Company'sCompany’s intermediate subsidiary holding companies, White Mountains’ weather risk management and variable annuity reinsurance businesses, the consolidated results of the Tuckerman Funds, the International American Group as well asand White Mountains'Mountains’ investments in Symetra and Montpelier and Symetra warrants.Re. A summary of White Mountains'Mountains’ financial results from its Other Operations segment for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 follows:



       Year Ended December 31,
       

       

      Year Ended December 31,

       

      Millions

      Millions

       

       

      2006

       

      2005

       

      2004

       

      2004
       2003
       2002
       

      Gross written premiums

       

      $

       

      $

      1.9

       

      $

       

       

      Net written premiums

       

      $

       

      $

      1.8

       

      $

       

      Gross written premiums $ $41.2 $35.0 

       

       

       

       

       

       

       

      Earned insurance and reinsurance premiums

       

      $

       

      $

      1.8

       

      $

       

      Net investment income

       

      46.8

       

      90.4

       

      39.0

       

      Net realized investment gains (loss)

       

      50.4

       

      (89.1

      )

      21.0

       

      Gain on sale of shares of OneBeacon

       

      171.3

       

       

       

      Other revenue

       

      108.0

       

      142.4

       

      95.0

       

      Total revenues

       

      376.5

       

      145.5

       

      155.0

       

       
       
       
       

       

       

       

       

       

       

       

      Net written premiums $ $33.1 $29.5 
       
       
       
       
      Earned insurance and reinsurance premiums $ $31.7 $29.7 
      Net investment income 37.5 15.5 (.7)
      Net realized investment gains 20.8 27.7 12.7 
      Other revenue 10.4 36.3 39.9 
       
       
       
       
       Total revenues 68.7 111.2 81.6 
       
       
       
       
      Losses and LAE 4.6 23.9 28.1 
      Insurance and reinsurance acquisition expenses  4.0 3.8 
      Other underwriting expenses 1.5 10.2 9.1 
      General and administrative expenses 172.0 114.6 49.7 
      Accretion of fair value adjustment to loss and LAE reserves 33.2 48.6 79.8 
      Interest expense on debt 44.3 46.3 69.8 
      Interest expense—dividends and accretion on preferred stock subject to mandatory redemption 47.6 22.3  
       
       
       
       
       Total expenses 303.2 269.9 240.3 
       
       
       
       
      Pretax loss $(234.5)$(158.7)$(158.7)
       
       
       
       

      Losses and LAE

       

      3.9

       

      12.6

       

      4.6

       

      Insurance and reinsurance acquisition expenses

       

       

      .1

       

       

      Other underwriting expenses

       

      1.8

       

      1.6

       

      1.5

       

      General and administrative expenses

       

      178.6

       

      128.0

       

      204.0

       

      Interest expense on debt

       

      3.0

       

       

      .3

       

      Total expenses

       

      187.3

       

      142.3

       

      210.4

       

      Pre-tax income (loss)

       

      $

      189.2

       

      $

      3.2

       

      $

      (55.4

      )

       White Mountains' capital raising and capital allocation activities are principally conducted through its holding companies. In this regard, the results of its

      Other Operations segment primarily relate to financing activities, purchase accounting adjustments relating to the OneBeacon Acquisition, gains and losses recognized from the purchase and sale of certain of the Company's subsidiaries and other assets and general and administrative expenses incurred at the holding company level.

      Other Operations Results—Results - Year Ended December 31, 20042006 versus Year Ended December 31, 20032005

      White Mountains'Mountains’ Other Operations segment reported pre-tax income of $189 million for 2006, compared to $3 million for 2005. The increase was primarily attributable to the $171 million gain on the sale of OneBeacon shares. In addition, the Montpelier Re investment accounted for $13 million in pre-tax income during 2006, compared to $63 million of pre-tax losses during 2005, which included $39 million of net investment income from the special dividend. These increased gains were partially offset by a $58 million increase in incentive compensation expense in 2006 compared to 2005. In addition, White Mountains’ weather risk management and variable annuity reinsurance businesses contributed $(3) million and $2 million, respectively, to pre-tax income for the Other Operations segment in their first year of operation.

      Other Operations Results - Year Ended December 31, 2005 versus Year Ended December 31, 2004

      White Mountains’ Other Operations segment reported pre-tax income of $3 million for 2005, compared to a pre-tax loss of $235$55 million for 2004. The following items contributed to the improved results in 2005: (1) an $84 million decrease in incentive compensation expense in 2005; (2) the special dividend from Montpelier Re in the 2005 first quarter, $39 million of which was reported in this segment; (3) $26 million of gains recorded in other revenues in 2005 from the settlement of two lawsuits in which White Mountains was a plaintiff; and (4) a $14 million increase in other net investment income. Additionally, the 2004 results included a $20 million realized loss from the impact that currency fluctuations had on hedging the cost of funding for the Sirius Acquisition. These loss-reducing factors were partially offset by a $126 million decrease in net realized investment gains from the valuation of the Montpelier Re warrants (a $110 million loss in 2005 versus a $16 million gain in 2004).


      II. Summary of Investment Results

      A summary of White Mountains’ consolidated pre-tax investment results for the years ended December 31, 2006, 2005 and 2004 follows:

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Net investment income

       

      $

      435.5

       

      $

      491.5

       

      $

      360.9

       

      Net realized investment gains

       

      272.7

       

      112.6

       

      181.1

       

      Net unrealized investment gains (losses)

       

      120.1

       

      (275.1

      )

      156.1

       

      Total GAAP pre-tax investment results

       

      $

      828.3

       

      $

      329.0

       

      $

      698.1

       

      Gross investment returns versus typical benchmarks for the years ended December 31, 2006, 2005 and 2004 are as follows. For purposes of discussing rates of return, all percentages are presented gross of management fees and trading expenses in order to produce a more relevant comparison to benchmark returns, while all dollar amounts are presented net of any management fees and trading expenses.

       

       

      Year Ended December 31,

       

       

       

      2006

       

      2005

       

      2004

       

      Fixed maturity investments

       

      5.9

      %

      2.7

      %

      4.4

      %

      Short-term investments

       

      6.1

       

      5.6

       

      1.9

       

      Total fixed maturities

       

      6.0

       

      3.0

       

      4.1

       

      Lehman U.S. Aggregate Index

       

      4.3

       

      2.4

       

      4.3

       

       

       

       

       

       

       

       

       

      Common stock

       

      22.0

       

      5.1

       

      35.4

       

      Other investments

       

      16.9

       

      3.9

       

      24.3

       

      Total equities

       

      20.4

       

      4.7

       

      31.8

       

      S&P 500 Index (total return)

       

      15.8

       

      4.9

       

      10.9

       

       

       

       

       

       

       

       

       

      Total consolidated portfolio

       

      8.2

      %

      3.3

      %

      7.4

      %

      Investment Returns -Year Ended December 31, 2006 versus Year Ended December31, 2005

      White Mountains’ total pre-tax investment result was a gain of $828 million, a return of 8.2% for 2006 compared to $159a gain of $329 million, a return of 3.3% for 2003.2005. White Mountains’ total fixed maturity portfolio returned 6.0% during 2006 versus 3.0% during 2005. The increased loss for the yearhigher return in 2006 was primarily due to a $20more favorable interest rate environment, where the rate of increase in interest rates during 2006 was lower than during 2005. In addition, the weakening of the U.S. dollar during 2006 reversed a trend from 2005 and produced unrealized currency exchange gains of $112 million in White Mountains’ foreign denominated fixed maturity securities portfolio. White Mountains’ total equity portfolio returned 20.4% during 2006 versus 4.7% during 2005. The equity return in 2005 was adversely impacted by 12.1 points due to the decline in the Montpelier Re investment.

      Net investment income of $436 million during 2006 decreased 11% from $492 million during 2005, principally due to the receipt of a $74 million special dividend on the Montpelier Re investment during 2005. Net realized investment gains of $273 million during 2006 increased by 142% from $113 million during 2005, primarily due to a $170 million increase in incentive compensation accruals, which were driven by a 41% rise in White Mountains' stock price during 2004, and higherrealized gains from the saleMontpelier Re investment (a $5 million realized gain in 2006 period versus a $165 million realized loss in 2005). Net unrealized gains on investments of real estate in 2003 ($13$120 million in 2004 and $43during 2006 improved from net unrealized losses of $275 million in 2003). In addition, interest expense on preferred stock was up $25 million in 2004during 2005, primarily due to the inclusioneffect of interest rate movements and foreign currency fluctuations, as described above. In addition, 2005 included a full year of expense in$65 million pre-tax income in 2004 as opposed to six months included in 2003 as a result ofunrealized loss from the Company's adoption of SFAS 150, effective July 1, 2003. Prior to the adoption of SFAS 150, the interest expense on preferred stock was classified below the pretax loss line on the income statement as preferred stock dividends.

              During the periods presented, Peninsula was the only operating company in the segment, and therefore it accounts for all of the premiums reported in the tables above. During January 2004, White Mountains sold Peninsula for $23 million. The operations of American Centennial and British Insurance Company are not significant to White Mountains, as those companies have been in run-off since they were acquired in 1999.Montpelier Re common share investment.



      Other Operations Results—YearInvestment Returns -Year Ended December 31, 20032005 versus Year Ended December 31, 20022004

      White Mountains' Other Operations segment reportedMountains’ total pre-tax lossesinvestment result was $329 million, a return of $1593.3% for 2005 versus $698 million, a return of 7.4%, for both 2003 and 2002. Incentive compensation accruals increased by $72 million2004. White Mountains’ total fixed maturity portfolio returned 3.0% during 2005 versus 4.1% during 2004. The lower return in 2003, but this increase2005 was offset by, among other items,primarily due to a $43 million decrease in losses onless favorable interest rate swap agreements and a $31 million decreaseenvironment, where the rate of increase in interest rates during 2005 was much larger than during 2004. In addition, the accretionstrengthening of the fair value adjustment on loss reserves acquiredU.S. dollar during 2005 reversed a trend from 2004 and produced unrealized currency exchange losses in the OneBeacon Acquisition. Interest expense on debt decreased by $24 million in 2003, due to the pay-off of a $260 million loan and the refinancing of $700 million of senior debt and amortization of the previous credit facility. This decrease was offset by the inclusion of $22 million of interest expense on preferred stock as a result of SFAS 150.

      II.    Summary of Investment Results

      Investment Philosophy

      White Mountains manages all of its consolidated investments through its wholly-owned subsidiary, WM Advisors. White Mountains' investment philosophy is to invest its assets with a view towards maximizing its after-tax total return over extended periods of time. Under this approach, each dollar of after-tax investment income and realized and unrealized gains and losses is valued equally. White Mountains' overallMountains’ foreign denominated fixed maturity investment strategy is to purchase securities that are attractively priced in relation to perceived credit risks.portfolio. White Mountains generally manages the interest rate risk associated with holding fixed maturity investments by actively monitoring and maintaining the average duration of the portfolio with the goal of achieving an adequate after-taxMountains’ total return without subjecting the portfolio to an unreasonable level of interest rate risk. White Mountains' investment portfolio mix as of December 31, 2004 consisted in large part of high-quality, fixed maturity investments and short-term investments, as well as some equity investments and limited partnerships. White Mountains' management believes that prudent levels of investments in common equity securities and other investments within its investment portfolio are likely to enhance after-tax total returns without significantly increasing the risk profile of the portfolio when considered over long periods of time when balanced with leverage and insurance risk considerations. White Mountains seeks to maximize after-tax risk-adjusted returns over the long term.


      Investment Returns

              White Mountains generated strong investment returns in 2004. The GAAP total return on invested assets was 7%, while the equity portfolio returned 20% for the year.4.7% during 2005 versus 31.8% during 2004. The equity return in 2005 was significantly better than the S&P 500, which returned 11% for the year, while the bond portfolio performed in line with its duration and credit characteristics. Management is continuing to keep its fixed maturity portfolio duration relatively short at about 3 years to reflect its concern that interest rates may rise in the next few years. Net investment income was up 24% from last year mainly due to the Sirius Acquisition, after declining 21% in 2003 primarilyadversely impacted by 12.1 percentage points due to the decline in reservesthe Montpelier Re investment, while the equity return in 2004 was favorably impacted by 7.4 percentage points due to gains in the Montpelier Re investment.

      Net investment income of $492 million during 2005 increased 36% from $361 million during 2004, principally due to the receipt of a $74 million special dividend on the Montpelier Re investment during 2005. Net realized investment gains of $113 million during 2005 decreased by 38% from $181 million during 2004, primarily due to a $165 million realized loss from the Montpelier Re investment, partially offset by realized gains generated by reducing our positions in certain highly appreciated securities. Net unrealized losses on investments of $275 million during 2005 deteriorated from net unrealized gains of $156 million during 2004, primarily due to the effect of interest rate movements and foreign currency fluctuations, as described above. In addition, 2005 included a $65 million pre-tax unrealized loss from the Montpelier Re common share investment.

      Portfolio composition

      The following table presents the composition of White Mountains’ investment portfolio as of December 31, 2006 and 2005:

       

       

      As of
      December 31 2006,

       

      As of
      December 31, 2005

       

      Millions

       

      $ in millions

       

      % of total

       

      $ in millions

       

      % of total

       

      Fixed maturity investments

       

      $

      7,911.5

       

      69.8

      %

      $

      7,582.7

       

      76.9

      %

      Short-term investments

       

      1,344.9

       

      11.9

       

      727.8

       

      7.4

       

      Common equity securities

       

      1,212.6

       

      10.7

       

      967.8

       

      9.8

       

      Other investments

       

      524.8

       

      4.6

       

      588.1

       

      5.9

       

      Trust account investments

       

      338.9

       

      3.0

       

       

       

      Total investments

       

      $

      11,332.7

       

      100.0

      %

      $

      9,866.4

       

      100.0

      %

      The breakdown of White Mountains’ fixed maturity investments, including trust account investments, at OneBeaconDecember 31, 2006 by credit class, based upon issue credit ratings provided by Standard and Poor’s, or if unrated by Standard and Poor’s, long term obligation ratings provided by Moody’s, is as follows:

       

       

      As of December 31 2006,

       

      Millions

       

      Amortized cost

       

      % of total

       

      U.S. government and government-sponsored entities

       

      $

      2,406.5

       

      29.6

      %

      AAA/Aaa

       

      3,000.2

       

      37.0

       

      AA/Aa

       

      261.5

       

      3.2

       

      A/A

       

      1,080.6

       

      13.3

       

      BBB/Baa

       

      1,141.7

       

      14.1

       

      Other/not rated

       

      227.4

       

      2.8

       

      Total fixed maturity investments

       

      $

      8,117.9

       

      100.0

      %

      The weighted average duration of White Mountains’ fixed maturity portfolio, excluding short-term investments, at December 31, 2006 was three years. The cost or amortized cost and carrying value of White Mountains’ fixed maturity available-for-sale investments at December 31, 2006 is presented below by contractual maturity. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.


       

       

      December 31, 2006

       

      Millions

       

      Cost or
      amortized cost

       

      Carrying
      value

       

      Due in one year or less

       

      $

      445.7

       

      $

      462.5

       

      Due after one year through five years

       

      3,058.3

       

      3,101.4

       

      Due after five years through ten years

       

      1,135.7

       

      1,139.6

       

      Due after ten years

       

      467.6

       

      471.2

       

      Asset-backed securities

       

      2,899.1

       

      2,904.7

       

      Preferred stocks

       

      111.5

       

      136.1

       

      Total

       

      $

      8,117.9

       

      $

      8,215.5

       

      Montpelier Re investment

      After-tax changes in White Mountains’ book value from its premium volumeinvestment in Montpelier Re for the years ended December 31, 2006, 2005 and 2004 were as follows:

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Net investment income, pre-tax

       

      $

      3.6

       

      $

      89.7

       

      $

      18.3

       

      Net realized investment gains (losses), pre-tax

       

      4.8

       

      (165.1

      )

      51.5

       

      Total revenues (losses), pre-tax

       

      8.4

       

      (75.4

      )

      69.8

       

      Tax benefit (expense) on total revenues

       

      1.3

       

      13.5

       

      (17.9

      )

      Total revenues (losses), after-tax

       

      9.7

       

      (61.9

      )

      51.9

       

      Change in net unrealized investment gains (losses), after-tax

       

      .1

       

      (42.3

      )

      36.0

       

      Equity in earnings of Montpelier, after-tax

       

       

       

      11.0

       

      Net after-tax change in White Mountains book value from Montpelier investment

       

      $

      9.8

       

      $

      (104.2

      )

      $

      98.9

       

      During 2005, White Mountains recognized $104 million of after-tax losses, net of dividends received, on its investment in Montpelier Re. Montpelier Re’s common share price decreased from $38.45 at December 31, 2004 to $18.90 at December31, 2005, resulting in a $110 million pre-tax realized investment loss on White Mountains’ Montpelier Re warrant investment. In addition, White Mountains recorded a $55 million pre-tax other-than-temporary impairment charge (reported as a realized investment loss) and a $42 million after-tax unrealized investment loss on its Montpelier Re common share investment during 2005. White Mountains’ original cost of its Montpelier common share investment was reduced.$106 million, which was subsequently increased by $65 million in equity in earnings recorded by White Mountains from 2001 to 2004, the period in which it accounted for the investment under the equity method of accounting. The impairment charge represented the difference between White Mountains’ GAAP cost of $171 million and the investment’s fair value of $116 million at December 31, 2005.

      During 2006, White Mountains recorded $4 million in pre-tax dividends from Montpelier Re in net investment income. During 2005, Montpelier Re declared a special dividend of $5.50 per share, payable to holders of both its common shares and warrants to acquire its common shares. White Mountains recorded pre-tax dividend income of $74 million in 2005 for this special dividend, in addition to $16 million in dividend income from Montpelier’s normal quarterly dividends.

      White Mountains sold a portion of its investment in Montpelier Re common shares during the first quarter of 2004 resulting in a $35 million pre-tax realized gain and, as a result, changed the method of accounting for its remaining Montpelier common shares to the fair value method, resulting in a $33 million increase in after-tax unrealized gains in the first quarter.quarter of 2004. During 2006, White Mountains sold an additional 5.4 million shares of its common share investment in Montpelier Re and realized a pre-tax gain of $5.5 million on the sale.

      At December 31, 2006 and 2005, White Mountains’ investment in Montpelier Re warrants and common stock totaled $67 million and $167 million, respectively.

      Impairment

      See Impairment

              SeeNote 5—Investments5 - “Investments” of the accompanying consolidated financial statements for White Mountains'Mountains analysis of impairment losses on investment securities.




      NON-GAAP FINANCIAL MEASURES

      This report includes twothree non-GAAP financial measures that have been reconciled to their most comparable GAAP financial measures. White Mountains believes these measures to be more relevant than comparable GAAP measures in evaluating White Mountains'Mountains’ financial performance.performance and capital position.

      Adjusted comprehensive net income is a non-GAAP financial measure that excludes the change in net unrealized gains and losses from Symetra'sSymetra’s fixed maturity portfolio from comprehensive net income. In the calculation of comprehensive net income under GAAP, requires these assets to befixed maturity investments are marked-to-market which results in gains during periods when interest rates fall and losses in periods when interest rates rise. Becausewhile the liabilities related to which those assets are matched are not. Symetra attempts to earn a “spread” between what it earns on its investments and what it pays out on its products. In order to try to fix this spread, Symetra invests in a manner that tries to match the duration and cash flows of its investments with the required cash outflows associated with its life insurance and structured settlements products. As a result, Symetra typically earns the same spread on in-force business whether interest rates fall or rise. Further, at any given time, some of Symetra’s structured settlement obligations may extend 40 or 50 years into the future, which is further out than the longest maturing fixed maturity investments regularly available for purchase in the market (typically 30 years). For these long-dated products, Symetra is unable to fully match the obligation with assets until the remaining expected payout schedule comes within the duration of securities available in the market. If at that time, these assets supportfixed maturity investments have yields that are not marked-to-market, it is likely thatlower than the economic impact onyields expected when the structured settlement product was originally priced, the spread for the product will shrink and Symetra will ultimately harvest lower returns for its shareholders. GAAP comprehensive net income increases when rates decline, which would besuggest an increase in the value of Symetra - the opposite of that shown under GAAP (i.e., in general, Symetra'swhat is happening to the intrinsic value increasesof the business. Therefore, White Mountains’ management and Board of Directors use adjusted comprehensive net income when interest rates riseassessing Symetra’s quarterly financial performance. In addition, this measure is typically the predominant component of growth in fully converted tangible book value per share, which is used in calculation of White Mountains’ performance for both short-term (annual bonus) and decreases when interest rates fall).long-term incentive plans. The reconciliation of adjusted comprehensive net income to comprehensive net income is included on page 43.45.

      Book value per share is derived by dividing the Company'sCompany’s total GAAP shareholders'shareholders’ equity as of a given date by the number of Common Sharescommon shares outstanding as of that date, including the dilutive effects of outstanding Options and warrants to acquire Common Shares,common shares, as well as the unamortized accretion of preferred stock. Fully converted tangible book value per common and equivalent share is a non-GAAP measure which is derived by expanding the GAAP book value per share calculation to include the effects of assumed conversion of all convertible securities and to exclude any unamortized goodwill and net unrealized gains from Symetra'sSymetra’s fixed maturity portfolio. The reconciliation of fully converted tangible book value per common and equivalent share to book value per share is included on page 42.44.

      Total capital at White Mountains is comprised of common shareholders’ equity, minority interest in OneBeacon Ltd., debt and, through December31, 2005, preferred stock subject to mandatory redemption. As a result of the OneBeacon Offering, the preferred stock was economically defeased and, therefore, was not included in total capital as of December 31, 2006. Tangible capital is a non-GAAP measure which excludes from total capital the unamortized goodwill and the equity in net unrealized gains from Symetra’s fixed maturity portfolio. The reconciliation of total capital to total tangible capital is included on page 62.


      LIQUIDITY AND CAPITAL RESOURCES

      Operating cash and short-term investments

      Holding company level.The primary sources of cash for the Company and certain of its intermediate holding companies are dividends and tax sharing payments received from its insurance and reinsurance operating subsidiaries, financing activities and net investment income and proceeds from sales and maturities of holding company investments. The primary uses of cash are interest payments on the Senior Notes,its debt obligations, dividend payments on the BerkshireCompany’s common shares and Zenith Preferred Stock as well as on Common Shares,minority interest holders of OneBeacon Ltd.’s common shares, purchases of investments and holding company operating expenses.

      Operating subsidiary level.The primary sources of cash for White Mountains'Mountains’ insurance and reinsurance operating subsidiaries are premium collections, net investment income and proceeds from sales and maturities of investments. The primary uses of cash are claim payments, policy acquisition costs, operating expenses, the purchase of investments and dividend and tax sharing payments made to parent holding companies.


      Both internal and external forces influence White Mountains'Mountains’ financial condition, results of operations and cash flows. Claim settlements, premium levels and investment returns may be impacted by changing rates of inflation and other economic conditions. In many cases, significant periods of time, ranging up to several years or more, may lapse between the occurrence of an insured loss, the reporting of the loss to White Mountains and the settlement of the liability for that loss. The exact timing of the payment of claims and benefits cannot be predicted with certainty. White Mountains'Mountains’ insurance and reinsurance operating subsidiaries maintain portfolios of invested assets with varying maturities and a substantial amount of short-term investments to provide adequate cashliquidity for the payment of claims.

      Management believes that White Mountains'Mountains’ cash balances, cash flows from operations, routine sales of investments and the liquidity provided by itsthe WTM Bank Facility and the FAC Bank Facility are adequate to meet expected cash requirements for the foreseeable future on both a holding company and insurance and reinsurance operating subsidiary level.




      Dividend Capacity

      Under the insurance laws of the states and jurisdictions under which White Mountains'Mountains’ insurance and reinsurance operating subsidiaries are domiciled, an insurer is restricted with respect to the timing or the amount of dividends it may pay without prior approval by regulatory authorities. Accordingly, there can be no assurance regarding the amount of such dividends that may be paid by such subsidiaries in the future. Following is a description of the ability of White Mountains'Mountains’ insurance and reinsurance operating subsidiaries to pay dividends to the Company and certain of its intermediate holding companies:

      OneBeacon:

      OneBeacon:

      Subsequent to the OneBeacon Offering, the Company and its intermediate holding companies expect to receive regular dividends from OneBeacon Ltd. The board of OneBeacon Ltd. has authorized quarterly dividend payments of $0.21 per share, commencing in the first quarter of 2007.

      Generally, OneBeacon'sOneBeacon’s regulated insurance operating subsidiaries have the ability to pay dividends during any 12 month12-month period without the prior approval of regulatory authorities in an amount equal to the greater of prior year statutory net income or 10% of prior year end statutory surplus, subject to the availability of unassigned funds. As a result, based on 20042006 statutory net income, OneBeacon'sOneBeacon’s top tier regulated insurance operating subsidiaries have the ability to pay $325approximately $234 million of dividends during 20052007 without prior approval of regulatory authorities, subject to the availability of unassigned funds. As of December 31, 2004, OneBeacon's2006, OneBeacon’s top tier regulated insurance operating subsidiaries had $1.3$1.6 billion of unassigned funds available for dividend distribution.funds.

      In addition, as of December 31, 2004,2006, OneBeacon had $195approximately $31 million of unrestricted cash and fixed maturity investments outside of its regulated insurance operating subsidiaries available for distribution during 2005.and OneBeacon Ltd. and its intermediate holding companies had an additional $66 million of unrestricted cash and fixed maturity investments at its intermediate holding companies. During 2004,2006, OneBeacon paid $305$90 million of cash dividends to Fund American.American and OneBeacon Ltd. paid $12 million of dividends to its immediate parent.

      White Mountains Re:Re:

              Folksamerica's principal regulated reinsurance operating subsidiaryFolksamerica Re has the ability to pay dividends during any 12 month12-month period without the prior approval of regulatory authorities in an amount equal to the lesser of net investment income, as defined by statute, or 10% of statutory surplus, in both cases as most recently reported to regulatory authorities, subject to the availability of earned surplus. As a result, basedBased upon December 31, 20042006 statutory surplus of $917$1,153 million, Folksamerica's principal regulated reinsurance operating subsidiaryFolksamerica Re would have the ability to pay approximately $92$115 million of dividends during 20052007 without prior approval of regulatory authorities, subject to the availability of earned surplus. As of December 31, 2004, Folksamerica's principal regulated reinsurance operating subsidiary2006, Folksamerica Re had $17$1 million of earned surplus, therefore it can pay dividends of $17 million plus additional earned surplus reported during 2005, subject to the $92 million limitation discussed above.surplus.

              AsIn addition, as of December 31, 2004, WMU2006, Folksamerica had $3approximately $31 million of unrestricted cash and fixed maturity investments available for distribution during 2005. In addition, WMU has the ability to distributeoutside of its 2005 earnings without restriction.regulated insurance operating subsidiaries. During 2004, WMU2006, Folksamerica Re paid $60$5 million of cashin dividends to its immediate parent.

              In addition,Sirius International has the ability to pay dividends subject to the availability of unrestricted statutory surplus. Historically, Sirius International has allocated the majority of its earnings to the Safety Reserve (see “Safety Reserve” below). As a result, as of December 31, 2004, White Mountains ReDecember31, 2006, Sirius International had approximately $97 million of cash and investments outside of its regulated insurance and reinsurance operating subsidiaries available for distribution during 2005.


      Safety Reserve
      no unrestricted statutory surplus.

      In accordance with the provisions of Swedish law, Sirius International can voluntarily transfer its pretax earnings,pre-tax income, or a portion thereof, subject to certain limitations, to its parent company to minimize taxes. In early 2007, Sirius International will transfer approximately $35 million of its 2006 pre-tax income to its parent company.

      WMRUS has the ability to distribute its 2007 earnings without restriction. At December 31, 2006, WMRUS had $7 million of unrestricted cash. During 2006, WMRUS paid $14 million of dividends to its immediate parent.


      In addition, as of December 31, 2006, White Mountains Re and its intermediate holding companies had an additional $26 million of unrestricted cash and fixed maturity investments outside of Folksamerica, Sirius and WMRUS. During 2006, White Mountains Re paid $46 million of dividends to its immediate parent.

      Esurance:

      Generally, Esurance’s regulated insurance operating subsidiaries have the ability to pay dividends during any 12-month period without the prior approval of regulatory authorities in an amount equal to the lesser of prior year statutory net income or 10% of prior year end statutory surplus, subject to the availability of unassigned funds. As a result, based on December 31, 2006 statutory surplus of $69 million, Esurance’s top tier regulated insurance operating subsidiary has the ability to pay $7 million of dividends during 2007 without prior approval of regulatory authorities, subject to the availability of unassigned funds. As of December 31, 2006, Esurance’s top tier regulated insurance operating subsidiary had $21 million of unassigned funds.

      In addition, as of December 31, 2006, Esurance had $3 million of unrestricted cash and fixed maturity investments outside of its regulated insurance operating subsidiaries. During 2006, Esurance did not pay any cash dividends to its immediate parent.

      Other operations:

      As of December 31, 2006, White Mountains had $497 million of unrestricted cash and fixed maturity investments at the Company and its intermediate holding companies included in its other operations segment.

      Safety Reserve

      In accordance with provisions of Swedish law, Sirius International is permitted to transfer up to the full amount of its pre-tax income, subject to certain limitations, into an untaxed reserve referred to as a safety reserve. The safety reserve, is a Swedish regulatory concept that has no equivalent under GAAP. Accordingly, underwhich amounted to $1.3 billion at December 31, 2006. Under GAAP, an amount equal to Sirius International'sthe safety reserve, of $1.1 billion at December 31, 2004, net of the related deferred tax liability established at the statutory Swedish tax rate of 28%, is classified as shareholders’ equity. Generally, this deferred tax liability is only required to be paid by Sirius



      International if it fails to maintain predetermined levels of premium writings and loss reserves in future years. As a result of the indefinite deferral of these taxes, Swedish regulatory authorities do not apply any taxes to the safety reserve when calculating solvency capital under Swedish insurance regulations. Accordingly, under local statutory requirements, an amount equal to the deferred tax liability on Sirius International’s safety reserve ($351 million at December 31, 2006) is included in solvency capital.


      Keep-Well
      Keep-Well

      On November 30, 2004, White Mountains completed a significant corporate reorganization, through which ownership of Folksamerica was transferred to White Mountains Re from Fund American. In order to effect the reorganization, White Mountains and Fund American entered into or amended certain agreements with respect to the Berkshire Preferred Stock. Under the terms of a Keep-Well Agreement dated November 30, 2004 between White Mountains and Fund American (the "Keep-Well"“Keep-Well”), White Mountains has agreed to return to Fund American up to approximately $1.1 billion, which equals the amount of net assets transferred out of Fund American as a result of the reorganization, if some or all of that amount is required by Fund American to meet its obligations to Berkshire under the Berkshire Preferred Stock. Additionally, the Keep-Well limits the aggregate amount of distributions that White Mountains may make to its shareholdersshareholders. This distribution limit, which as of December 31, 2006 was $2.2 billion, will increase or decrease by an amount equal to approximately $1.3 billion plus White Mountains' aggregateMountains’ consolidated net income after September 30, 2004.or loss over the remaining life of the agreement. The Keep-Well will expire when all obligations of the Berkshire Preferred Stock, which is redeemable in May 2008, have been satisfied, or when approximately $1.1 billion has been returned to Fund American.



      Insurance Float

      Insurance float is an important dynamic of White Mountains'Mountains’ operations that must be managed effectively. Float is money that an insurance company holds for a limited time. In an insurance operation, float arises because premiums are collected before losses are paid. This interval can extend over many years. During that time, the insurer invests the money.funds. When the premiums that an insurer collects do not cover the losses and expenses it eventually must pay, the result is an underwriting loss, which is considered to be the cost of float. The amount and cost of float for White Mountains is affected by underlying market conditions, as well as acquisitions or dispositions of insurance and reinsurance businesses.

      Although insurance float can be calculated using numbers determined under GAAP, insurance float is not a GAAP concept and, therefore, there is no comparable GAAP measure.


      One of the means by which White Mountains calculates its insurance float is by taking its net investment assets and subtracting its total tangible capital. The following table illustrates White Mountains'Mountains’ consolidated insurance float position as of the past five year-ends:



       December 31,
       

       

      December 31,

       

      ($ in millions)

      ($ in millions)

       

       

      2006(1)

       

      2005

       

      2004

       

      2003

       

      2002

       

      2004
       2003
       2002
       2001
       2000
       
      Total investmentsTotal investments $10,529.5 $8,547.5 $8,899.4 $9,005.7 $2,102.2 

       

      $

      11,332.7

       

      $

      9,866.4

       

      $

      10,529.5

       

      $

      8,547.5

       

      $

      8,899.4

       

      Investments held in trust

       

      (338.9

      )

       

       

       

       

       

       

      CashCash 243.1 89.9 121.5 67.4 4.4 

       

      159.0

       

      187.7

       

      243.1

       

      89.9

       

      121.5

       

      Investment in unconsolidated insurance affiliate(s)Investment in unconsolidated insurance affiliate(s) 466.6 515.9 399.9 311.1 130.6 

       

      335.5

       

      479.7

       

      466.6

       

      515.9

       

      399.9

       

      Equity in net unrealized gains from Symetra's fixed maturity portfolio (56.6)     

      Equity in net unrealized (gains) losses from Symetras fixed maturity portfolio

       

      4.1

       

      (24.2

      )

      (56.6

      )

       

       

      Accounts receivable on unsettled investment salesAccounts receivable on unsettled investment sales 19.9 9.1 160.8 75.2  

       

      8.5

       

      21.7

       

      19.9

       

      9.1

       

      160.8

       

      Accounts payable on unsettled investment purchasesAccounts payable on unsettled investment purchases (30.9) (371.6) (495.2) (311.2) (.2)

       

      (66.8

      )

      (43.4

      )

      (30.9

      )

      (371.6

      )

      (495.2

      )

      Interest-bearing funds held by ceding companies(1)(2)Interest-bearing funds held by ceding companies(1)(2) 516.9 70.4 50.1 42.9 23.4 Interest-bearing funds held by ceding companies(1)(2)

       

      268.5

       

      293.9

       

      516.9

       

      70.4

       

      50.1

       

      Interest-bearing funds held under reinsurance treaties(1)(3)Interest-bearing funds held under reinsurance treaties(1)(3) (105.1) (152.5) (236.2) (311.0) (400.6)Interest-bearing funds held under reinsurance treaties(1)(3)

       

      (94.5

      )

      (100.6

      )

      (105.1

      )

      (152.5

      )

      (236.2

      )

      Net investment assets

       

      $

      11,608.1

       

      $

      10,681.2

       

      $

      11,583.4

       

      $

      8,708.7

       

      $

      8,900.3

       

       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

      Net investment assets $11,583.4 $8,708.7 $8,900.3 $8,880.1 $1,859.8 
       
       
       
       
       
       
      Total common shareholders' equity $3,883.9 $2,979.2 $2,407.9 $1,444.6 $1,046.5 

      Total common shareholders equity

       

      $

      4,455.3

       

      $

      3,833.2

       

      $

      3,883.9

       

      $

      2,979.2

       

      $

      2,407.9

       

      Minority interest — OneBeacon Ltd.

       

      490.7

       

       

       

       

       

       

      DebtDebt 783.3 743.0 793.2 1,125.4 96.0 

       

      1,106.7

       

      779.1

       

      783.3

       

      743.0

       

      793.2

       

      Preferred stock subject to mandatory redemptionPreferred stock subject to mandatory redemption 211.9 194.5 180.9 170.3  

       

       

      234.0

       

      211.9

       

      194.5

       

      180.9

       

      Convertible preference sharesConvertible preference shares   219.0   

       

       

       

       

       

      219.0

       

      Less:           

      Total capital

       

      $

      6,052.7

       

      $

      4,846.3

       

      $

      4,879.1

       

      $

      3,916.7

       

      $

      3,601.0

       

      Unamortized deferred credits and goodwill

       

      (32.5

      )

      (24.4

      )

      (20.0

      )

      (20.3

      )

       

      Equity in net unrealized (gains) losses from Symetras fixed maturity portfolio

       

      4.1

       

      (24.2

      )

      (56.6

      )

       

       

      Total tangible capital

       

      $

      6,024.3

       

      $

      4,797.7

       

      $

      4,802.5

       

      $

      3,896.4

       

      $

      3,601.0

       

       Unamortized deferred credits and goodwill (20.0) (20.3)  660.2 66.8 

       

       

       

       

       

       

       

       

       

       

       

       Equity in net unrealized gains from Symetra's fixed maturity portfolio (56.6)     
       
       
       
       
       
       
      Total tangible capital $4,802.5 $3,896.4 $3,601.0 $3,400.5 $1,209.3 
       
       
       
       
       
       
      Insurance float $6,780.9 $4,812.3 $5,299.3 $5,479.6 $650.5 
       
       
       
       
       
       

      Insurance float

       

      $

      5,583.8

       

      $

      5,883.5

       

      $

      6,780.9

       

      $

      4,812.3

       

      $

      5,299.3

       

      Insurance float as a multiple of total tangible capitalInsurance float as a multiple of total tangible capital 1.4x 1.2x 1.5x 1.6x 0.5x

       

      0.9

      x

      1.2

      x

      1.4

      x

      1.2

      x

      1.5

      x

      Net investment assets as a multiple of total tangible capitalNet investment assets as a multiple of total tangible capital 2.4x 2.2x 2.5x 2.6x 1.5x

       

      1.9

      x

      2.2

      x

      2.4

      x

      2.2

      x

      2.5

      x

      Insurance float as a multiple of common shareholders' equity 1.7x 1.6x 2.2x 3.8x 0.6x
      Net investment assets as a multiple of common shareholders' equity 3.0x 2.9x 3.7x 6.1x 1.8x
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

      Insurance float as a multiple of common shareholders equity

       

      1.3

      x

      1.5

      x

      1.7

      x

      1.6

      x

      2.2

      x

      Net investment assets as a multiple of common shareholders equity

       

      2.6

      x

      2.8

      x

      3.0

      x

      2.9

      x

      3.7

                      x


      (1)

                   Excludes preferred stock subject to mandatory redemption, having an aggregate accreted liquidation preference at December 31, 2006 of $262 million, and $339 million of investments held in two irrevocable grantor trusts for the purpose of economically defeasing the preferredstock subject to mandatory redemption. The creation and funding of these trusts did not legally defease the preferred stock and therefore the preferred stock will continue to appear on White Mountains’ balance sheet until it is redeemed.

      (2)Excludes funds held by ceding companies from which White Mountains does not receive interest credits and excludescredits.

      (3)             Excludes funds held by White Mountains under reinsurance treaties for which White Mountains does not provide interest credits.

      White Mountains has historically obtained its insurance float primarily through acquisitions, as opposed to organic growth. For each of theIn recent years, in the three-year period ending December 31, 2004, White Mountains has had negative cash flows from operations but has generated significantgrown float from its insurance and reinsurance operations. This is due to the fact that White Mountains'Mountains’ cash flow from operations does


      not reflect cash and investments generated by the acquisition of insurance and



      reinsurance businesses in recent years. Post-acquisition, such companies are often placed into partial or complete run-off, thereby resulting in negative cash flows from operations as the investments acquired are liquidated over time to pay claims.

              In the case of OneBeacon, the substantial amount of float initially acquired with the OneBeacon Acquisition has shrunk as a result of OneBeacon's re-underwriting efforts and the effects of the Liberty Agreement. OneBeacon's float is expected to continue to shrink during 2005 as older, long-tailed loss reserves are paid and are not replaced with the same level of current writings as those written in the past. In the case of White Mountains Re, its float increased substantially in 2004 as a result of the Sirius and Sierra acquisitions. White Mountains Re's float is expected to increase during 2005 as a result of higher premium writings from its increased capital base and acquisitions over the past few years.

      It is White Mountains'Mountains’ intention to generate low-cost float over time through a combination of acquisitions and/or by organic growth in its existing insurance and reinsurance operations. However, White Mountains will seek to increase its insurance float organically only when market conditions allow for an expectation of generating an underwriting profits.


      Financing
      profit.

      Financing

      The following table summarizes White Mountains'Mountains’ capital structure as of December 31, 20042006 and 2003:2005:

       
       December 31,
       
      $ in millions

       
       2004
       2003
       
      Senior Notes, carrying value $698.3 $698.1 
      Bank Facility     
      Other debt of operating subsidiaries(1)  85.0  44.9 
        
       
       
       Total debt  783.3  743.0 
      Preferred stock subject to mandatory redemption  211.9  194.5 
      Total common shareholders' equity  3,883.9  2,979.2 
      Unamortized goodwill of consolidated limited partnerships  (20.0) (20.3)
      Equity in net unrealized gains from Symetra's fixed maturity portfolio  (56.6)  
        
       
       
       Total tangible capital $4,802.5 $3,896.4 
        
       
       
      Senior Notes to total tangible capital  15% 18%
      Total debt to total tangible capital  16% 19%
      Total debt and preferred stock to total tangible capital  21% 24%

       

       

      December 31,

       

      ($ in millions)

       

      2006

       

      2005

       

      Senior Notes, carrying value

       

      $698.7

       

      $698.5

       

      WTM Bank Facility

       

      320.0

       

       

      Other debt of operating subsidiaries (1)

       

      88.0

       

      80.6

       

      Total debt

       

      1,106.7

       

      779.1

       

       

       

       

       

       

       

      Preferred stock subject to mandatory redemption

       

      (2)

      234.0

       

      Minority interest — OneBeacon Ltd.

       

      490.7

      (3)

       

      Total common shareholders’ equity

       

      4,455.3

       

      3,833.2

       

      Total capital

       

      $6,052.7

       

      $4,846.3

       

      Unamortized goodwill

       

      (32.5

      )

      (24.4

      )

      Equity in net unrealized losses (gains) from Symetras fixed maturity portfolio

       

      4.1

       

      (24.2

      )

      Total tangible capital

       

      $6,024.3

       

      $4,797.7

       

       

       

       

       

       

       

      Total debt to total tangible capital

       

      18

      %

      16

      %

      Total debt and preferred stock to total tangible capital

       

      18

      %

      21

      %


      (1)

      SeeNote 6—Debt6 - “Debt” of the accompanying Consolidated Financial Statements for a discussion of operating subsidiary debt.

      (2)

                   The preferred stock subject to mandatory redemption, having an aggregate accreted liquidation preference $262 million, was not included in total capital at December 31, 2006 because it was economically defeased in connection with the OneBeacon Offering.

      (3)             The minority interest arising from White Mountains’ ownership in OneBeacon Ltd. has been included in White Mountains’ capitalization table because it supports debt service on the Senior Notes.

      Management believes that White Mountains'Mountains’ strong financial position provides it with the flexibility and capacity to obtain funds externally as needed through debt or equity financing on both a short-term and long-term basis.

      In May 2003,connection with the OneBeacon Offering, White Mountains reduced its cost of capital and significantly reduced its near-term obligations by fully prepaying its previous $740 million amortizing bank facility, principally through the net proceeds from the issuance of the Senior Notes, which were issued by Fund American through a public offering. The Senior Notes bear a fixed annual interest rate of 5.9%terminated their existing $400 million credit facility, under which they were both permitted borrowers, and mature in May 2013. replaced it with two distinct credit facilities, as described below.

      In July 2003,November 2006, White Mountains enhanced its access to the capital markets by havingand White Mountains Re Group, Ltd, as co-borrowers and co-guarantors,established a shelf registration declared effective by the SEC for offerings of up to $2.0 billion in debt and/or equity securities.



              In August 2004, Fund American restructured and re-syndicated its existing $300$500 million Bank Facility to increase the availability under the revolving credit facility to $400 million and to extend the maturity from September 2006 to August 2009. Under the Bank Facility, for which both Fund American and the Company are permitted borrowers, the Company guarantees all obligations of Fund American, and Fund American guarantees all borrowings of the Company, subject to certain limitations imposed by the terms of the Berkshire Preferred Stock.that matures in November 2011. As of December 31, 2004, the Bank Facility2006, White Mountains had $320 million outstanding on this facility, which bears interest at a current rate of 5.9%, and had accrued $2.5 million of interest expense on this borrowing during 2006.

      In November 2006, Fund American, a subsidiary of OneBeacon Ltd., established a $75 million revolving credit facility that matures in November 2011. All borrowings under this facility are guaranteed by OneBeacon Ltd. As of December 31, 2006, this facility was undrawn.

      In connection with its acquisition of the Sierra Group on March 31, 2004, Folksamerica entered into a $62 million purchase note (the "Sierra Note"“Sierra Note”), $58 million of which willmay be adjusted over its approximate six-year term to reflect favorable or adverse loss reserve development on the acquired reserve portfolio and run-off of remaining policies in force (mainly workers compensation business) as well as certain other balance sheet protections. During 2004,Since inception, the principal of the Sierra Note washas been reduced by $12$35 million, to an outstanding balance of $27 million as of December 31, 2006, as a result of adverse development on the acquired reserves and run-off of unearned premiums.

      In connection with its acquisitionpurchase of Atlantic Specialty on March 31, 2004,an office building in Canton, Massachusetts, OneBeacon issuedentered into a $20$41 million ten-year noteconstruction facility to fund renovations to the seller (the "Atlantic Specialty Note").new space that currently houses its U.S. headquarters. As of December 31, 2006, OneBeacon is required to repay $2had drawn the entire $41 million of principal onunder the notes per year, commencing with the first payment due on January 1, 2007.facility.


      Fund American'sAmerican’s Senior Notes are currently rated "Baa2" (Adequate,“Baa2” (Medium Grade, the 9thninth highest of 21 twenty-one ratings) with a stable outlook by Moody's and "BBB-"Moody’s, “BBB” (Adequate, the 10thninth highest of 24twenty-two ratings) with a positivestable outlook by S&PStandard & Poor’s, “bbb” (Very Good, the ninth highest of twenty-two ratings) with a stable outlook by A.M. Best and "BBB"“BBB” (Good, the 9thninth highest of 24twenty-three ratings) with a stable outlook by Fitch Ratings.

      It is possible that, in the future, one or more of the rating agencies may lower White Mountains'Mountains’ existing ratings. If one or more of its ratings were downgraded, White Mountains could incur higher borrowing costs and its ability to access the capital markets could be impacted. In addition, White Mountains'Mountains’ insurance and reinsurance operating subsidiaries could be adversely impacted by a downgrade in their financial strength ratings, including a possible reduction in demand for their products in certain markets.

      The Senior Notes were issued under an indenture which contains restrictive covenants that, among other things, limit the ability of the Company, Fund American and their respective subsidiaries to create liens and enter into sale and leaseback transactions and substantially limits the ability of Fund American and its respective subsidiaries to consolidate, merge or transfer their properties and assets. The indenture does not contain any financial ratios or specified levels of net worth or liquidity to which the Company or Fund American must adhere. At December 31, 2004,2006, White Mountains was in compliance with all of the covenants under the Senior Notes, and anticipates it will continue to remain in compliance with these covenants for the foreseeable future.

      The WTM Bank Facility containsand the FAC Bank Facility contain various affirmative, negative and financial covenantswhich White Mountains considers to be customary for such borrowings and include maintaining certain minimum net worth and maximum debt to capitalization standards for White Mountains.and in the case of the WTM Bank Facility minimum interest coverage standards. Failure to meet one or more of these covenants could result in an event of default, which ultimately could eliminate availability under the facilitythese facilities and result in acceleration of principal repayment on any amounts outstanding. At December 31, 2004,December31, 2006, White Mountains was in compliance with all of the covenants under the WTM Bank Facility and the FAC Bank Facility, and anticipates it will continue to remain in compliance with these covenants for the foreseeable future.




      Contractual Obligations and Commitments

      Below is a schedule of White Mountains'Mountains’ material contractual obligations and commitments as of December 31, 2004: 2006:

      Millions

      Millions

       Due in
      One Year
      or Less

       Due in
      Two to Three
      Years

       Due in
      Four to Five
      Years

       Due After
      Five
      Years

       Total

       

      Due in
      One Year
      or Less

       

      Due in
      Two to Three
      Years

       

      Due in
      Four to Five
      Years

       

      Due After
      Five
      Years

       

      Total

       

      DebtDebt $ $17.0 $4.0 $764.0 $785.0

       

      $

      2.0

       

      $

      31.9

       

      $

      325.6

       

      $

      748.5

       

      $

      1,108.0

       

      Mandatorily redeemable preferred stock(1)Mandatorily redeemable preferred stock(1)   300.0 20.0 320.0Mandatorily redeemable preferred stock(1)

       

      20.0

       

      300.0

       

       

       

      320.0

       

      Loss and LAE reserves(1)(2)Loss and LAE reserves(1)(2) 2,967.9 3,026.4 1,485.0 2,588.2 10,067.5Loss and LAE reserves(1)(2)

       

      2,921.4

       

      2,461.2

       

      1,194.7

       

      2,661.1

       

      9,238.4

       

      Reserves for structured contractsReserves for structured contracts 69.5 102.9 68.5 135.0 375.9

       

      43.1

       

      60.0

       

      44.0

       

       

      147.1

       

      Interest on debt and dividends and accretion on preferred stock subject to mandatory redemption 98.0 216.0 119.6 149.5 583.1

      Interest on debt and dividends on preferred stock subject to mandatory redemption

       

      71.3

       

      98.2

       

      88.1

       

      93.4

       

      351.0

       

      Long-term incentive compensationLong-term incentive compensation 248.1 250.3 6.2 61.3 565.9

       

      88.0

       

      161.7

       

      30.5

       

      41.0

       

      321.2

       

      Pension and other benefit plan obligations

       

      19.7

       

      2.8

       

      3.5

       

      12.7

       

      38.7

       

      Operating leasesOperating leases 41.8 71.8 26.3 28.6 168.5

       

      43.1

       

      58.9

       

      25.5

       

      21.3

       

      148.8

       

       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

      Total contractual obligations $3,425.3 $3,684.4 $2,009.6 $3,746.6 $12,865.9
       
       
       
       
       

      Total contractual obligations

       

      $

      3,208.6

       

      $

      3,174.7

       

      $

      1,711.9

       

      $

      3,578.0

       

      $

      11,673.2

       


      (1)

                   Economically defeased in connection with the OneBeacon Offering.

      (2)Represents expected future cash outflows resulting from loss and LAE payments. Accordingly, these balances excludeadd back the discount on OneBeacon'sOneBeacon’s workers compensation loss and LAE reserves of $259.4$191 million and the remaining purchase accounting fair value adjustment of $409.6$271 million related to the OneBeacon and Sirius acquisitionsacquisition as they are non-cash items. Further, the amounts presented includeare gross of reinsurance recoverables recordedon unpaid losses of $3,797.4 million.


      $4,016 million as of December 31, 2006.

      White Mountains'Mountains’ loss reserves do not have contractual maturity dates. However, based on historical payment patterns, the preceding table includes an estimate of when management expects White Mountains'Mountains’ loss reserves to be paid. The timing of claim payments is subject to significant uncertainty. White Mountains maintains a portfolio of marketable investments with varying maturities and a substantial amount of short-term investments to provide adequate cash flows for the payment of claims.


      The balances included in the table above regarding White Mountains'Mountains’ long-term incentive compensation plans include amounts payable for performance shares and units, as well as deferred compensation balances. Exact amounts to be paid cannot be predicted, for performance shares, with certainty, as the ultimate amounts of these liabilities are based on the future performance of the Company and the market price of Common Sharesthe Company’s common shares at the time the payments are made. The estimated payments reflected in the table are based on current accrual factors (Common Share(common share price and pay-out percentage) and assume that all outstanding balances were 100% vested as of December 31, 2004.2006.

      There are no provisions within White Mountains'Mountains’ leasing agreements that would trigger acceleration of future lease payments. White Mountains does not finance its operations through the securitization of its trade receivables, through special purpose entities or through synthetic leases. Further, except as noted in the following paragraph, White Mountains has not entered into any material arrangement requiring it to guarantee payment of third party debt, lease payments or to fund losses of an unconsolidated special purpose entity, except as noted in the following paragraph.entity.

      Through Sirius International, White Mountains has a long termlong-term investment as a stockholder in LUC Holdings, an entity that has entered into a head lease to rent the London Underwriting Center ("LUC"(“LUC”) through 2016. LUC Holdings in turn subleases space in the LUC. In the LUC Holdings stockholders agreement, the stockholders have guaranteed any shortfall between the head lease and the sub-leases on a joint and several basis. As a consequence, in recent years the stockholders have funded an operating shortfall of LUC. At December 31, 2004,2006, White Mountains has recorded a liability of $10$9 million for its share of the expected future shortfall between LUC Holdings'Holdings’ head lease payments



      and sub-lease receipts. White Mountains does not believe that future shortfalls, if any, will have a material impact on its results of operations.

      White Mountains also has future binding commitments to fund certain limited partnership investments. These commitments, which total approximately $25.9$109 million, do not have fixed funding dates and are therefore excluded from the table above.

      Detailed information concerning White Mountains'Mountains’ liquidity and capital resource activities during 2004, 20032006, 2005 and 20022004 follows:

      For the year ended December 31, 2006

      Financing and Other Capital Activities

      During 2006, White Mountains declared and paid cash dividends of $86 million, $28 million and $2 million to holders of White Mountains' common shares, the Berkshire Preferred Stock and the Zenith Preferred Stock, respectively.

      During 2006, OneBeacon Ltd. declared and paid a $12 million cash dividend to its immediate parent and OneBeacon paid $90 million of dividends to Fund American.. Also during 2006, White Mountains Re paid $46 million of dividends to its immediate parent.

      During 2006, the Company, through various intermediate holding companies, contributed $100 million in cash and investments to White Mountains Re and $125 million in cash to Esurance.

      During 2006, Fund American funded a trust account with $324 million of cash and investments to economically defease the Berkshire Preferred Stock and FAEH funded a trust account with $21 million of cash to economically defease the Zenith Preferred Stock.

      During 2006, White Mountains paid a total of $41 million in interest under the Senior Notes.

      During 2006, White Mountains borrowed and repaid $140 million under its previous credit facility and borrowed $320 million under its new WTM Bank Facility. In addition, OneBeacon drew an additional $22 million under its existing real estate construction loan.

      During 2006, OneBeacon and Folksamerica repaid $8 million and $7 million, respectively, of loans to Dowling and Partners Connecticut Fund III LP.

      During 2006, White Mountains Re received cash dividends from Symetra of $16 million on its common share investment and $9 million on its warrant investment.

      Acquisitions and Dispositions

      On December 22, 2006, White Mountains Re acquired Mutual Service for $34 million in cash.

      On November 14, 2006, White Mountains closed on the OneBeacon Offering and received $650 million in net proceeds for the sale of 27.6% of its ownership interest in OneBeacon Ltd.


      On August 2, 2006, White Mountains Re sold one of its subsidiaries, Sirius America, to an investor group for $139 million in cash. As part of the transaction, White Mountains acquired an equity interest of approximately 18% in the acquiring entity by investing $32 million into the investor group.

      On September 29, 2006, OneBeacon transferred certain assets and the right to renew existing policies of its Agri division to QBE Insurance Group for $32 million in cash.

      Other Liquidity and Capital Resource Activities

      During the third quarter of 2006, White Mountains sold 5.4 million common shares of Montpelier Re for proceeds of $104 million in cash.

      During 2006, the Company issued a total of 3,530 common shares to its employees through the exercise of Options during the period and received cash proceeds of $.6 million in connection with these Option exercises.

      During 2006, White Mountains made payments totaling $57 million, in cash or by deferral into certain non-qualified compensation plans of the Company or its subsidiaries, to participants in its long-term incentive compensation plans. These payments were made with respect to 64,100 target performance shares at payout levels ranging from 142% to 181% of target.

      For the year ended December 31, 2005

      Financing and Other Capital Activities

      During 2005, White Mountains declared and paid cash dividends of $86 million, $28 million and $2 million to holders of White Mountains' common shares, the Berkshire Preferred Stock and the Zenith Preferred Stock, respectively.

      During 2005, OneBeacon declared and paid dividends of $340 million to Fund American and White Mountains Re declared and paid $98 million of dividends to its immediate parent.

      During 2005, White Mountains contributed $250 million to White Mountains Re (which, in turn, contributed $250 million to Folksamerica) and $10 million to Esurance.

      During 2005, White Mountains paid a total of $41 million in interest under the Senior Notes.

      During 2005, OneBeacon drew down $18 million on an 18-year mortgage note that it entered into in connection with its purchase of land and a home office building.

      Acquisitions and Dispositions

      During 2005, OneBeacon sold two of its insurance subsidiaries, NFU and Traders and Pacific Insurance Company, to third parties for a total of $162 million in cash.

      During 2005, White Mountains Re sold one of its subsidiaries, California Indemnity Insurance Company, to a third party for a total of $20 million, $19 million of which was paid in cash.

      On April 29, 2005, OneBeacon purchased a 284,000 square foot office facility located in Canton, MA for $23 million.

      Other Liquidity and Capital Resource Activities

      During 2005, White Mountains received a total of $60 million in tax refunds and interest from the Internal Revenue Service related to the completion of an audit of White Mountains’ 1997-2000 tax years, the period during which the Company redomesticated to Bermuda.

      During 2005, the Company issued a total of 7,750 common shares to its employees through the exercise of Options during the period and received cash proceeds of $1 million in connection with these Option exercises.

      During the first quarter of 2005, White Mountains made payments totaling $235 million, in cash or by deferral into certain non-qualified compensation plans of the Company or its subsidiaries, to participants in its long-term incentive compensation plans. These payments were made with respect to 212,611 performance shares at payout levels ranging from 113% to 200% of target.

      During the first quarter of 2005, White Mountains received a $74 million special dividend related to its common share and warrant investment in Montpelier Re. This dividend represented $5.50 per share and was in addition to Montpelier Re’s normal quarterly dividend of $.36 per share.

      66




      For the year ended December 31, 2004

      Financing and Other Capital Activities

      On June 29, 2004, Berkshire exercised of all of its warrants to purchase 1,724,200 Common Sharescommon shares of White Mountains for $294 million. Berkshire acquired the warrants in connection with the financing of White Mountains'Mountains’ acquisition of OneBeacon in 2001. The warrants were exercisable at any time until May 2008 and callable by the Company on or after May 31, 2005. In consideration for the early exercise of the warrants, Berkshire and the Company agreed to reduce the exercise price by approximately 2%.

      During 2004, White Mountains declared and paid dividends of $9 million, $28 million and $2 million to holders of Common Shares,White Mountains’ common shares, the Berkshire Preferred Stock and the Zenith Preferred Stock, respectively.

      During 2004, Fund AmericanWhite Mountains restructured and re-syndicated the Bank Facility to extend its maturity and to increase the availability of the revolving credit facility to $400 million.

      During 2004, White Mountains paid a total of $41 million in interest under the Senior Notes.

      During 2004, OneBeacon declared and paid a total of $305 million in cash dividends to Fund American. Also during 2004, WMUWMRUS paid a total of $60 million of cash dividends to its immediate parent. On March 31, 2004, OneBeacon distributed Folksamerica to Fund American.

      During 2004, the Company issued a net total of 3,938 Common Sharescommon shares to its employees through the exercise of Options during the year and the Company received cash proceeds of $.5 million in connection with these Option exercises. In addition, during the first quarter of 2004, White Mountains issued 27,772 Common Sharescommon shares to employees of OneBeacon in connection with OneBeacon'sOneBeacon’s employee stock ownership plan. OneBeacon paid $13 million to the Company in consideration for these Common Shares.common shares.

      On August 27, 2004, White Mountains repaid the $25 million note that was issued as part of the financing of its 2001 acquisition of C-F Insurance Company.

      Acquisitions and Dispositions

      During 2004, White Mountains acquired Sirius for $428 million, 19% of Symetra for $195 million, Tryg-Baltica for $58 million, the Sierra Group for $14 million in cash and a $62 million note and Atlantic Specialty for $30 million in cash and a $20 million note.

      During 2004, White Mountains sold Potomac for $22 million, Western States, as well as its boiler inspection service business, for $15 million (both subsidiaries of OneBeacon) and Peninsula for $23 million.

      SeeNote 2—Significant Transactions2 - “Significant Transactions” of the accompanying Consolidated Financial Statements for further discussion of these transactions.



      Other Liquidity and Capital Resource Activities

      During the first quarter of 2004, White Mountains sold 4.5 million common shares of Montpelier Re to third parties for net proceeds of $155.3 million. Also during the first quarter of 2004, White Mountains purchased additional warrants to acquire 2.4 million common shares of Montpelier Re from an existing warrant holder for $54.1 million in cash.

      During the first quarter of 2004, White Mountains made payments amounting to $127 million, in cash or by deferral into certain non-qualified compensation plans of the Company or its subsidiaries, to participants in its long-term incentive compensation plans. These payments were made with respect to 167,782 performance shares at payout levels ranging from 93% to 200% of target.

      For the year ended December 31, 2003TRANSACTIONS WITH RELATED PERSONS

      Financing and Other Capital Activities

              In May 2003, Fund American issued the Senior Notes for net proceeds of $693 million. Using proceeds from the Senior Notes, Fund American repaid the entire $615 million of term loans outstanding under its previous bank facility. In addition, on May 27, 2003, using the remaining $78 million in proceeds from the Senior Notes and cash on hand, Fund American repaid the entire $125 million of revolving loans outstanding under its previous bank facility. In connectionSee Note 17 - “Transactions with the repayment of its previous bank facility, Fund American paid an aggregate $56 million to unwind all of its existing interest rate swap agreements.

              In September 2003, Fund American established its $300 million revolving Bank Facility. As discussed earlier, this Bank Facility was restructured and re-syndicated in August 2004.

              During 2003, White Mountains paid a total of $20 million in interest under the Senior Notes.

              During 2003, White Mountains made scheduled principal amortization payments of $7 million and paid a total of $23 million in interest under its previous bank facility, including $11 million paid under the interest rate swap agreements, prior to its repayment.

              During 2003, White Mountains declared and paid dividends of $8 million, $28 million and $2 million to holders of Common Shares, the Berkshire Preferred Stock and the Zenith Preferred Stock, respectively.

              During 2003, White Mountains filed a shelf registration statement, which was declared effective by the SEC in July 2003, for offerings of up to $2.0 billion in debt and/or equity securities.

              During 2003, OneBeacon declared and paid a total of $235 million in cash dividends to Fund American. Also during 2003, WMU paid a total of $35 million in cash dividends to its immediate parent, White Mountains Re, and WM Advisors paid a total of $10 million in cash dividends to Fund American.

              During 2003, the Company issued a total of 11,116 Common Shares to its employees through the exercise of Options and, as a result, the Company received cash proceeds of $1.5 million in connection with these Option exercises.

      Acquisitions and Dispositions

              During 2003, OneBeacon sold one of its subsidiaries, NFU Standard, for $22 million.

      Other Liquidity and Capital Resource Activities

              During the first quarter of 2003, White Mountains paid a total of 45,000 performance shares (relating to the 2000-2002 performance period) at 200%, amounting to $29 million, to its participants in



      cash, Common Shares or by deferral into certain non-qualified compensation plans of the Company or its subsidiaries. In the second quarter of 2003, White Mountains made performance share payments amounting to $13 million in cash or by deferral into certain non-qualified compensation plans of the Company. The payments on these additional performance shares in the second quarter represented accelerated payments to certain non-employee directors of the Company for performance periods originally scheduled to end on December 31, 2003, 2004 and 2005.

      For the year ended December 31, 2002

      Financing and Other Capital Activities

              During 2002, White Mountains sold $225 million of its equity securities in a private transaction and used the proceeds, along with cash on hand, to repay in full the $260 million Seller Note to Aviva, along with approximately $23 million of related accrued interest.

              During 2002, White Mountains made scheduled principal amortization payments of $78 million and interest payments of $55 million (including $18 million paid under related interest rate swap agreements) on its previous bank facility.

              During 2002, OneBeacon declared and paid a total of $173 million in cash dividends to Fund American.

              During 2002, White Mountains declared and paid a total of $31 million in dividends on the Berkshire Preferred Stock, the Zenith Preferred Stock and the Convertible Preference Shares. Also in 2002, the Company declared and paid an annual dividend of $8 million to its common shareholders

              During 2002, the Company issued a total of 23,200 Common Shares to its employees in satisfaction of performance share and Option obligations under White Mountains' Long-Term Incentive Plan (the "Incentive Plan"). The Company received proceeds of $1.3 million as a result of exercises of Options to acquire 11,500 Common Shares during the period.

              In December 2002, OBPP borrowed $8 million from a related third party.

      Acquisitions and Dispositions

              On April 25, 2002, Folksamerica acquired Imperial for $4 million including related expenses.

      Other Liquidity and Capital Resource Activities

              In July and August of 2002, White Mountains received federal tax refunds totaling $167 million representing accelerated recoveries of carryback losses from 2001 under the Job Creation and Worker Assistance Act of 2002.

              During 2002, White Mountains paid a total of 31,300 performance shares (relating to the 1999-2001 performance period) at a 200% value, amounting to $21 million, to its participants in cash, Common Shares or by deferral into certain non-qualified compensation plans of the Company or its subsidiaries.


      RELATED PARTY TRANSACTIONS

              SeeNote 17—"Related Party Transactions"Persons” in the accompanying Consolidated Financial Statements.



      CRITICAL ACCOUNTING ESTIMATES

              Management'sManagement’s Discussion and Analysis of Financial Condition and Results of Operations discusses the Company'sCompany’s consolidated financial statements, which have been prepared in accordance with GAAP.



      The financial statements presented herein include all adjustments considered necessary by management to fairly present the financial position, results of operations and cash flows of White Mountains. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.

      In the current year presentation of financial information, certain amounts in the prior period financial statements have been reclassified to conform with the current presentation. White Mountains has completed numerous significant transactions during the periods presented that have affected the comparability of the financial statement information presented herein.

      On an ongoing basis, management evaluates its estimates, including those related to loss and LAE reserves, purchase accounting, reinsurance estimates and its pension benefit obligations. Management bases its estimates on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgements about the carrying values of assets and liabilities that are not readily apparent from other sources.

      Management believes that its critical accounting policies affect its more significant estimates used in the preparation of its consolidated financial statements. The descriptions below are summarized and have been simplified for clarity.


      1. Loss and Loss Adjustment Expenses

      OneBeacon

        Non-AsbestosReserves other than Asbestos and Environmental Reserves and Construction Defect Claim Reserves

      OneBeacon establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. The process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain.

              ReservesLoss and LAE reserves are typically comprised of (1) case reserves for claims reported and (2) reserves for losses that have occurred but for which claims have not yet been reported, referred to as incurred but not reported ("IBNR"(“IBNR”) reserves, which include a provision for expected future development on case reserves. Case reserves are estimated based on the experience and knowledge of claims staff regarding the nature and potential cost of each claim and are adjusted as additional information becomes known or payments are made. IBNR reserves are derived by subtracting paid loss and LAE and case reserves from estimates of ultimate loss and LAE. Actuaries estimate ultimate loss and LAE using various generally accepted actuarial methods applied to known losses and other relevant information. Like case reserves, IBNR reserves are adjusted as additional information becomes known or payments are made.

      Ultimate loss and LAE are generally determined by extrapolation of claim emergence and settlement patterns observed in the past that can reasonably be expected to persist into the future. In forecasting ultimate loss and LAE with respect to any line of business, past experience with respect to that line of business is the primary resource, but cannot be relied upon in isolation. OneBeacon'sOneBeacon’s own experience, particularly claims development experience, such as trends in case reserves, payments on and closings of claims, as well as changes in business mix and coverage limits, is the most important information for estimating its reserves. External data, available from organizations such as statistical bureaus, consulting firms and reinsurance companies, is sometimes used to supplement or corroborate OneBeacon'sOneBeacon’s own experience, and can be especially useful for estimating costs of new business. For some lines of business, such as "long-tail"“long-tail” coverages discussed below, claims data reported in the most recent accident year is often too limited to provide a meaningful basis for analysis due to the typical delay in reporting of claims. For this type of business, OneBeacon uses a selected loss ratio method for the initial accident year or years. This is a standard and accepted actuarial reserve estimation method



      in these circumstances in which the loss ratio is selected based upon information used in pricing policies for that line of business, as well as any publicly available industry data, such as industry pricing, experience and trends, for that line of business.


      Uncertainties in estimating ultimate loss and LAE are magnified by the time lag between when a claim actually occurs and when it is reported and settled. This time lag is sometimes referred to as the "claim-tail"“claim-tail”. The claim-tail for most property coverages is typically short (usually a few days up to a few months). The claim-tail for liability/casualty coverages, such as automobile liability, general liability, products liability, multiple peril coverage, and workers compensation, can be especially long as claims are often reported and ultimately paid or settled years, even decades, after the related loss events occur. During the long claims reporting and settlement period, additional facts regarding coverages written in prior accident years, as well as about actual claims and trends may become known and, as a result, OneBeacon may adjust its reserves. If management determines that an adjustment is appropriate, the adjustment is booked in the accounting period in which such determination is made in accordance with GAAP. Accordingly, should reserves need to be increased or decreased in the future from amounts currently established, future results of operations would be negatively or positively impacted, respectively.

      In determining ultimate loss and LAE, the cost to indemnify claimants, provide needed legal defense and other services for insureds and administer the investigation and adjustment of claims are considered. These claim costs are influenced by many factors that change over time,overtime, such as expanded coverage definitions as a result of new court decisions, inflation in costs to repair or replace damaged property, inflation in the cost of medical services and legislated changes in statutory benefits, as well as by the particular, unique facts that pertain to each claim. As a result, the rate at which claims arose in the past and the costs to settle them may not always be representative of what will occur in the future. The factors influencing changes in claim costs are often difficult to isolate or quantify and developments in paid and incurred losses from historical trends are frequently subject to multiple and conflicting interpretations. Changes in coverage terms or claims handling practices may also cause future experience and/or development patterns to vary from the past. A key objective of actuaries in developing estimates of ultimate loss and LAE, and resulting IBNR reserves, is to identify aberrations and systemic changes occurring within historical experience and accurately adjust for them so that the future can be projected reliably. Because of the factors previously discussed, this process requires the use of informed judgment and is inherently uncertain.

              OneBeacon'sOneBeacon’s actuaries use several generally accepted actuarial methods to evaluate its loss reserves, each of which has its own strengths and weaknesses. OneBeacon places more or less reliance on a particular method based on the facts and circumstances at the time the reserve estimates are made. These methods generally fall into one of the following categories or are hybrids of one or more of the following categories:

        ·Historical paid loss development methods: These methods use historical loss payments over discrete periods of time to estimate future losses. Historical paid loss development methods assume that the ratio of losses paid in one period to losses paid in an earlier period will remain constant. These methods necessarily assume that factors that have affected paid losses in the past, such as inflation or the effects of litigation, will remain constant in the future. Because historical paid loss development methods do not use case reserves to estimate ultimate losses, they can be more reliable than the other methods discussed below that look to case reserves (such as actuarial methods that use incurred losses) in situations where there are significant changes in how case reserves are established by a company'scompany’s claims adjusters. However, historical paid loss development methods are more leveraged, (meaningmeaning that small changes in payments have a larger impact on estimates of ultimate losses)losses, than actuarial methods that use incurred losses because cumulative loss payments take much longer to equal the expected ultimate losses than cumulative incurred amounts. In addition, and for similar reasons, historical


          paid loss development methods are often slow to react to situations when new or different factors arise than those that have affected paid losses in the past.

        ·Historical incurred loss development methods: These methods, like historical paid loss development methods, assume that the ratio of losses in one period to losses in an earlier period will remain constant in the future. However, instead of using paid losses, these methods use incurred losses (i.e., the sum of cumulative historical loss payments plus outstanding case reserves) over discrete periods of time to estimate future losses. Historical incurred loss development methods can be preferable to historical paid loss development methods because they explicitly take into account open cases and the claims adjusters'adjusters’ evaluations of the cost to settle all known claims. However, historical incurred loss development methods necessarily assume that case reserving practices are consistently applied over time.overtime. Therefore, when there have been significant changes in how case reserves are established, using incurred loss data to project ultimate losses can be less reliable than other methods.



      ·Expected loss ratio methods: These methods are based on the assumption that ultimate losses vary proportionately with premiums. Expected loss ratios are typically developed based upon the information used in pricing, and are multiplied by the total amount of premiums written to calculate ultimate losses. Expected loss ratio methods are useful for estimating ultimate losses in the early years of long-tailed lines of business, when little or no paid or incurred loss information is available.

      ·Adjusted historical paid and incurred loss development methods: These methods take traditional historical paid and incurred loss development methods and adjust them for the estimated impact of changes from the past in factors such as inflation, the speed of claim payments or the adequacy of case reserves. Adjusted historical paid and incurred loss development methods are often more reliable methods of predicting ultimate losses in periods of significant change, provided the actuaries can develop methods to reasonably quantify the impact of changes.

        OneBeacon performs an actuarial review of its recorded reserves each quarter. OneBeacon’s actuaries compare the previous quarter’s estimates of paid loss and LAE, case reserves and IBNR to amounts indicated by actual experience. Differences between previous estimates and actual experience are evaluated to determine whether a given actuarial method for estimating loss and LAE should be relied upon to a greater or lesser extent than it had been in the past. While some variance is expected each quarter due to the inherent uncertainty in loss and LAE, persistent or large variances would indicate that prior assumptions and/or reliance on certain reserving methods may need to be revised going forward.

        In its selection of recorded reserves, OneBeacon historically gave greater weight to adjusted paid loss development methods, which are not dependent on the consistency of case reserving practices, over methods that rely on incurred losses. In recent years, the amount of weight given to methods based on incurred losses has increased with OneBeacon’s confidence that its case reserving practices have been more consistently applied.

        Upon completion of each quarterly review, OneBeacon’s actuaries select indicated reserve levels based on the results of the actuarial methods described previously, which are the primary consideration in determining management’s best estimate of required reserves. At December 31, 2006 and 2005, the differences between OneBeacon’s total held reserves, which represents management’s best estimate of required reserves, and the actuarially indicated reserve level were insignificant. However, in making its best estimate, management also considers other qualitative factors that may lead to a difference between held reserves and actuarially recommended levels in the future. Typically, these factors exist when management and OneBeacon’s actuaries conclude that there is insufficient historical incurred and paid loss information or that trends included in the historical incurred and paid loss information are unlikely to repeat in the future. Such factors include, among others, recent entry into new markets or new products, improvements in the claims department that are expected to lessen future ultimate loss costs and legal and regulatory developments.

        Construction Defect Claims Reserves

              OneBeacon'sConstruction defect claims are a non-A&E exposure that has proven to have a greater degree of uncertainty when estimating loss and LAE using generally accepted actuarial methods. OneBeacon’s general liability and multiple peril lines of business have been significantly impacted by an increasinga large number of construction defect claims. Construction defect is a liability allegation relating to defective work performed in the construction of structures such as apartments, condominiums, single family dwellings or other housing, as well as the sale of defective building materials. Such claims seek recovery due to damage caused by alleged deficient construction techniques or workmanship. Much of the increase inrecent claims activity has been generated by plaintiffs'plaintiffs’ lawyers who approach new homeowners, and in many cases homeowner associations with large numbers of homeowners in multi-residential complexes, about defects or other flaws in their homes. The increasing number of claimsClaims for construction defects began with claims relating to exposures in California. Then, as plaintiffs'plaintiffs’ lawyers organized suits in other states with high levels of multi-residential construction, construction defect claims were reported in nearby western states, such as Colorado and Nevada, and eventually throughout the country. The reporting of such claims can be quite delayed as the statute of limitations can be up to ten years. Court decisions have expanded insurers'insurers’ exposure to construction defect claims as well. For example, in 1995 California courts adopted a "continuous trigger"“continuous trigger” theory in which all companies that had ever insured a property that was alleged to have been damaged by defective construction must respond to the claimant, even if evidence of the alleged damage did not appear until after the insurance period had expired. As a result, construction defect claims may be reported more than ten years after a project has been completed as litigation can proceed for several years before an insurance company is identified as a potential contributor. Recently, claimsClaims have also emerged from parties claiming additional insured status on policies issued to other parties (e.g., such as contractors seeking coverage on a sub-contractor's policy).sub-contractor’s


      policy). Further, in reserving for these claims, there is additional uncertainty due to the potential for further unfavorable judicial rulings and regulatory actions. The primary actuarial methods that are used to estimate loss and LAE reserves for construction defect claims are frequency and severity methods. These methods separately project the frequency of future reported claims and the average cost, or severity, of individual claims. The reserve is the product of the projected number of reported claims and the severity.

      A large number of construction defect claims have been identified relating to coverages that OneBeacon had written in the past through Commercial Union Corporation and General Accident Corporation of America, which OneBeacon refers to as their legacy companies, and their subsidiaries in California, Colorado, Nevada, Washington and Oregon. ManagementOneBeacon’s management has sought to mitigate future construction defect risks in all states by no longer providing insurance to certain residential general contractors and sub-contractors involved in multi-habitational projects. Mitigating actions also included initiating the withdrawal from problematic sub-segments within OneBeacon'sOneBeacon’s construction book of business, such as street and road construction, water, sewer and pipeline construction, and dam, waterway, railroad and subway construction. Management has undertakenAs a result of these actions, to mitigate future risks related to construction defect claims andOneBeacon’s management believes that the number of reported construction defect claims relating to coverages written in the past peaked in 2004 and will begincontinue to decline. In addition, in reserving for these claims, there is additional uncertainty due to the potential for further unfavorable judicial rulings and regulatory actions.

        Asbestos and Environmental ("(“A&E"&E”) Reserves

              OneBeacon'sOneBeacon’s reserves include provisions made for claims that assert damages from A&E related exposures. Asbestos claims relate primarily to injuries asserted by those who allegedly came in contact with asbestos or products containing asbestos. Environmental claims relate primarily to pollution and related clean-up cost obligations, particularly as mandated by federal and state environmental protection agencies. In addition to the factors described above under"Non-Asbestos and Environmental Reserves" Reserves” regarding the reserving process, OneBeacon estimates its A&E reserves based upon, among other factors, facts surrounding reported cases and exposures to claims, such as policy limits and deductibles, current law, past and projected claim activity and past settlement values for similar claims, as well as analysis of industry studies and events, such as recent settlements and asbestos-related bankruptcies. The cost of administering A&E claims, which is an important factor in estimating loss and LAE reserves, tends to be higher than in the case of non-A&E claims due to the higher legal costs typically associated with A&E claims. Due to the inherent difficulties in estimating ultimate A&E exposures, OneBeacon does not estimate a range for A&E incurred losses.

              OneBeacon'sA large portion of OneBeacon’s A&E losses resulted primarily from the operations of the Employers Group, an entity acquired by one of the legacy companies in 1971. These operations, including business of Employers Surplus Lines Insurance Company and Employers Liability Assurance Corporation, provided primary and excess liability insurance for commercial insureds, including Fortune 500-sized accounts, some of whom subsequently experienced claims for A&E losses. OneBeacon stopped writing such coverage in 1984.

              OneBeacon'sOneBeacon’s liabilities for AforA&E losses from business underwritten in the recent past are substantially limited by the application of exclusionary clauses in the policy language that eliminated coverage offor such claims. After 1987 for pollution and 1992 for asbestos, most liability policies contained industry-standard absolute exclusions of such claims. In earlier years, various exclusions were also applied, but the wording of those exclusions was less strict and subsequent court rulings have reduced their effectiveness.

      OneBeacon also incurred A&E losses via its participation in industry pools and associations. The most significant of these pools was Excess Casualty Reinsurance Association ("ECRA"(“ECRA”), which provided excess liability reinsurance to U.S. insurers from 1950 until the early 1980s. ECRA incurred significant liabilities for AforA&E, of which OneBeacon bears approximately a 4.7% share, or $65 million at both December 31, 2004 (compared to $66 million at December 31, 2003),2006 and 2005, which is fully reflected in OneBeacon'sOneBeacon’s loss and LAE reserves.

      More recently, since the 1990s, OneBeacon has experienced an influx ofincrease in claims from commercial insureds, including many non-Fortune 500-sized accounts written during the 1970s and 1980s, who are named as defendants in asbestos lawsuits. As a number of large well-known manufacturers of asbestos



      and asbestos-containing products have gone into bankruptcy, plaintiffs have sought recoveries from peripheral defendants, such as installers, transporters or sellers of such products, or from owners of premises on which the plaintiffs'plaintiffs’ exposure to asbestos allegedly occurred. At December 31, 2004, 6642006, 520 policyholders had asbestos-related claims against OneBeacon. In 2004, 1122006, 121 new insureds with such peripheral involvement presented asbestos claims under prior OneBeacon policies.

      Historically, most asbestos claims have been asserted as product liability claims. Recently, insureds who have exhausted the available products liability limits of their insurance policies have sought from insurers such as OneBeacon payment for asbestos claims under the premises and operations coverage of their liability policies. It ispolicies, which may not be subject to similar aggregate limits. OneBeacon expects this trend to continue. However, to date there have been fewer of these premises and operations coverage claims than product liability coverage claims. This may


      be due to a variety of factors, including that it may be more difficult for underlying plaintiffs to establish losses as stemming from premises and operations exposures, which requires proof of the defendant'sdefendant’s negligence, rather than products liability under which strict legal liability applies. Hence, there are fewer ofPremises and operations claims may vary significantly and policyholders may seek large amounts, although such claims andfrequently settle for a fraction of the initial alleged amount. Accordingly, there is a great deal of variation in damages awarded for the actual injuries. Additionally, several accounts that seek such coverage find that previously paid losses exhausted the aggregate limits under their policies. In these situationsAs of December 31, 2006, there is no coverage for these claims. There are currently 148were approximately 323 active claims by insureds against OneBeaconus without product liability coverage asserting operations or premises coverage.coverage, which may not be subject to aggregate limits under the policies.

      Immediately prior to White Mountains' acquisition ofthe OneBeacon Acquisition, OneBeacon purchased a reinsurance contract with NICO under which OneBeacon is entitled to recover from NICO up to $2.5 billion in the future for asbestos claims arising from business written by OneBeacon in 1992 and prior, environmental claims arising from business written by OneBeacon in 1987 and prior, and certain other exposures.exposures, including mass torts. Under the terms of the NICO Cover, NICO receives the economic benefit of reinsurance recoverables from certain of OneBeacon'sOneBeacon’s third party reinsurers in existence at the time the NICO Cover was executed ("(“Third Party Recoverables"Recoverables”). As a result, the Third Party Recoverables serve to protect the $2.5 billion limit of NICO coverage for the benefit of OneBeacon. Any amounts uncollectible from third party reinsurers due to dispute or the reinsurers'reinsurers’ financial inability to pay are covered by NICO under its agreement with OneBeacon. Third Party Recoverables are typically for the amount of loss in excess of a stated level each year. Of claim payments in the past 11 years,from 1995 through 2006, approximately 63%50% of asbestos losses and 39% of environmental losses have been recovered under the historical third party reinsurance.

      In June 2005, OneBeacon completed an internal study of its A&E exposures. This study considered, among other items, (1) facts, such as policy limits, deductibles and available third party reinsurance, related to reported claims; (2) current law; (3) past and projected claim activity and past settlement values for similar claims; (4) industry studies and events, such as recent settlements and asbestos-related bankruptcies; and (5) collectibility of third-party reinsurance. Based on the study, OneBeacon increased its best estimate of its incurred losses ceded to NICO, net of underlying reinsurance, by $353 million ($841 million gross) to $2.1 billion, which is within the $2.5 billion coverage provided by the NICO Cover. Based on the study, OneBeacon estimated that the range of reasonable outcomes around its best estimate was $1.7 billion to $2.4 billion, versus a range of $1.5 billion to $2.4 billion from the previous study that was conducted in 2003. Due to the NICO Cover, there was no impact to income or equity from the change in estimate.

      The increase in the estimate of incurred A&E losses was principally driven by raised projections for claims related to asbestos (particularly from assumed reinsurance business), and for mass torts other than asbestos and environmental, particularly lead poisoning and sexual molestation. The increase was partially offset by reduced projections of ultimate hazardous waste losses.

      As part of its previously described actuarial review process, OneBeacon reviews A&E activity each quarter and compares that activity to what was assumed in the original internal study. As of December 31, 2006, OneBeacon estimated that the range of reasonable outcomes around its best estimate was $1.7 billion to $2.4 billion.

      As noted above, OneBeacon estimates that on an incurred basis it has exhaustedceded estimated incurred losses of approximately $1.7$2.1 billion of the coverage provided by NICO at December 31, 2004. At December 31, 2004, $14.3December31, 2006. Since entering into the NICO Cover, $29 million of the $1.7$2.1 billion of exhaustedutilized coverage relates to uncollected amounts from NICO related to uncollectible Third Party Recoverables. third party reinsurers through December 31, 2006.Net losses paid totaled approximately $682$847 million as of December 31, 2004,2006, with $95$146 million paid in 2004.2006. Asbestos payments during 20042006 reflect payments resulting from intensified efforts by claimants to resolve asbestos claims prior to the potential enactment of potential Federal asbestos legislation. To the extent that OneBeacon'sOneBeacon’s estimate of ultimate A&E losses as well as the estimate and collectibility of Third Party Recoverables differs from actual experience, the remaining protection under the NICO Cover may be more or less than the approximate $757$404 million that OneBeacon estimates remained at December 31, 2004.2006.

              For purposes of determining available reinsurance, product liability asbestos claims typically are aggregated as a single loss within each policy period. As a result, losses often exceed the retention level under the reinsurance agreement and reinsurance recoveries are obtained. However, for claims being asserted under premises and operations coverage, the losses are generally not aggregated for purposes of determining reinsurance recoveries, so OneBeacon expects that in the future a smaller percentage of these losses will be covered as Third Party Recoverables than has been true historically of products liability asbestos losses.

              OneBeacon'sOneBeacon’s reserves for A&E losses, net of Third Party Recoverables but prior to NICO recoveries, are $1.0were $1.2 billion at December 31, 2004.2006. An industry benchmark of reserve adequacy is the "survival ratio"“survival ratio”, computed as a company'scompany’s reserves divided by its historical average yearly loss



      payments. This ratio indicates approximately how many more years of payments the reserves can support, assuming future yearly payments are equal to historical levels. OneBeacon'sOneBeacon’s survival ratio was approximately 21.016.6 at December 31, 2004, which2006. This was computed as the ratio of A&E reserves, net of Third Party Recoverables prior to the NICO Cover of $1.0$1.2 billion plus the remaining unused portion of the NICO Cover of $757$404 million, to the average A&E loss payments inover the past three years. The average loss payments used to calculate OneBeacon'sthree-year period ended December 31, 2006, net of Third Party Recoverables. OneBeacon’s survival ratio were net of a large commutation ($64 million) in 2003 with a Third Party Reinsurer. White Mountainswas 18.6 at December 31, 2005. OneBeacon believes that as a result of the NICO Cover and its historical third party reinsurance programs, OneBeacon should not experience material financial loss from old A&E exposures under current coverage interpretations and that its survival ratio compares


      favorably to industry survival ratios. However, the survival ratio is a simplistic measure estimating the number of years it would be before the current ending loss reserves for these claims would be paid using recent annual average payments. Many factors, such as aggressive settlement procedures, mix of business and coverage provided, have a significant effect on the amount of A&E reserves and payments and the resultant survival ratio. Thus, caution should be exercised in attempting to determine reserve adequacy for these claims based simply on this survival ratio.

              OneBeacon'sOneBeacon’s reserves for A&E losses at December 31, 20042006 represent management'smanagement’s best estimate of its ultimate liability based on information currently available. Based on this estimate, OneBeacon believes the NICO Cover will be adequate to cover all of its A&E obligations. However, as case law expands, medical and clean-up costs increase and industry settlement practices change, OneBeacon may be subject to asbestos and environmentalA&E losses beyond currently estimated amounts. Therefore, OneBeacon cannot guarantee that its A&E loss and LAE reserves, plus the remaining coverage under the NICO Cover, will be sufficient to cover additional liability arising from any such unfavorable developments. See Note 3 to— “Reserves for Unpaid Loss and LAE—Asbestos and environmental loss and LAE reserve activity” of the accompanying historical consolidated financial statements for more information regarding White Mountains'its A&E reserves.

        OneBeacon A&E Claims Activity

              OneBeacon'sOneBeacon’s A&E claim activity for the last two years is illustrated in the table below.


       Year Ended
      December 31,

       

       

      Year Ended December 31,

       

      A&E Claims Activity

       
      2004
       2003
       

       

      2006

       

      2005

       

      Asbestos     

       

       

       

       

       

      Accounts with asbestos claims at the beginning of the year 642 615 

       

      592

       

      664

       

      Accounts reporting asbestos claims during the year 112 178 

       

      121

       

      128

       

      Accounts on which asbestos claims were closed during the year (90)(151)

       

      (193

      )

      (200

      )

       
       
       
      Accounts with asbestos claims at the end of the year 664 642 

       

      520

       

      592

       

       
       
       
      Environmental     

       

       

       

       

       

      Accounts with environmental claims at the beginning of the year 674 596 

       

      495

       

      644

       

      Accounts reporting environmental claims during the year 110 175 

       

      130

       

      180

       

      Accounts on which environmental claims were closed during the year (140)(97)

       

      (203

      )

      (329

      )

       
       
       
      Accounts with environmental claims at the end of the year 644 674 

       

      422

       

      495

       

       
       
       
      Total     

       

       

       

       

       

      Total accounts with A&E claims at the beginning of the year 1,316 1,211 

       

      1,087

       

      1,308

       

      Accounts reporting A&E claims during the year 222 353 

       

      251

       

      308

       

      Accounts on which A&E claims were closed during the year (230)(248)

       

      (396

      )

      (529

      )

       
       
       
      Total accounts with A&E claims at the end of the year 1,308 1,316 

       

      942

       

      1,087

       

       
       
       

        OneBeacon'sOneBeacon’s Loss and LAE Reserves by Line of Business

              OneBeacon'sThe process of establishing loss reserves is complex and imprecise as it must take into consideration many variables that are subject to the outcome of future events. As a result, informed subjective estimates and judgments as to OneBeacon’s ultimate exposure to losses are an integral component of its loss reserving process. OneBeacon, like other insurance companies, categorizes and tracks its insurance reserves by “line of business”, such as auto liability, multiple peril package business, and workers compensation. Furthermore, OneBeacon regularly reviews the appropriateness of reserve levels at the line of business level, taking into consideration the variety of trends that impact the ultimate settlement of claims for the subsets of claims in each particular line of business.


      For loss and allocated loss adjustment expense reserves, excluding asbestos and environmental, the key assumption as of December 31, 2006 was that the impact of the various reserving factors, as described below, on future paid losses would be similar to the impact of those factors on the historical loss data with the following exceptions:

      ·                  Recent increases in paid loss trends were inflated due to changes in claim handling procedures that decreased the settlement time for claims. This resulted in some increases in paid loss activity that OneBeacon believes will not continue into the future.

      ·                  Increases in case reserve adequacy over the 2001-2004 calendar periods have resulted in trends in case incurred activity that OneBeacon believes will not continue into the future. Case incurred activity can be the result of underlying changes in expected claim costs or changes in the adequacy of the case reserves relative to the underlying expected claim cost. If the activity is the result of underlying changes in expected costs, it is more likely to repeat in the future, and would likely result in prior year reserve development, as the change in ultimate claim costs would not have been considered when making the previous selection of IBNR reserves. If the activity is the result of changes in case reserve adequacy, it would not indicate any change in the ultimate claim costs and would not be expected to repeat in the future. In these cases, it is unlikely that prior year reserve development would occur, as the change in case reserves would be offset by a corresponding change in IBNR reserves (i.e., deficiency or redundancy in case reserves was implicitly captured when making the previous selection of IBNR reserves).

      ·                  In 2004, OneBeacon established a separate claim group to manage run-off claims. Due to the recent nature of this event, OneBeacon does not believe that the impacts of this group on future losses have been reflected in historical losses. Therefore, OneBeacon has given considerable weight to the most recent loss experience for this segment.

      The major causes of material uncertainty (“reserving factors”) generally will vary for each product line, as well as for each separately analyzed component of the product line. The following section details reserving factors by product line. There could be other reserving factors that may impact ultimate claim costs. Each reserving factor presented will have a different impact on estimated reserves. Also, reserving factors can have offsetting or compounding effects on estimated reserves. For example, in workers compensation, the use of expensive medical procedures that result in medical cost inflation may enable workers to return to work faster, thereby lowering indemnity costs. Thus, in almost all cases, it is impossible to discretely measure the effect of a single reserving factor and construct a meaningful sensitivity expectation. Actual results will likely vary from expectations for each of these assumptions, resulting in an ultimate claim liability that is different from that being estimated currently.

      Workers compensation

      Workers compensation is generally considered a long tail coverage, as it takes a relatively long period of time to finalize claims from a given accident year. While certain payments such as initial medical treatment or temporary wage replacement for the injured worker are made quickly, some other payments are made over the course of several years, such as awards for permanent partial injuries. In addition, some payments can run as long as the injured worker’s life, such as permanent disability benefits and ongoing medical care. Despite the possibility of long payment tails, the reporting lags are generally short, settlements are generally not complex, and most of the liability can be considered high frequency with moderate severity. The largest reserve risk generally comes from the low frequency, high severity claims providing lifetime coverage for medical expense arising from a worker’s injury. Examples of common reserving factors that can change and, thus, affect the estimated workers compensation reserves include:

      General workers compensation reserving factors

      ·                  Mortality trends of injured workers with lifetime benefits and medical treatment or dependents entitled to survivor benefits

      ·                  Degree of cost shifting between workers compensation and health insurance

      ·                  Changes in claim handling philosophies (e.g., case reserving standards)


      Indemnity reserving factors

      ·                  Time required to recover from the injury

      ·                  Degree of available transitional jobs

      ·                  Degree of legal involvement

      ·                  Changes in the interpretations and processes of various workers compensation bureaus’ oversight of claims

      ·                  Future wage inflation for states that index benefits

      ·                  Changes in the administrative policies of second injury funds

      ·                  Re-marriage rate for spouse in instances of death

      Medical reserving factors

      ·                  Changes in the cost of medical treatments, including prescription drugs, and underlying fee schedules

      ·                  Frequency of visits to health providers

      ·                  Number of medical procedures given during visits to health providers

      ·                  Types of health providers used

      ·                  Type of medical treatments received

      ·                  Use of preferred provider networks and other medical cost containment practices

      ·                  Availability of new medical processes and equipment

      ·                  Changes in the use of pharmaceutical drugs

      ·                  Degree of patient responsiveness to treatment

      Workers compensation book of business reserving factors

      ·                  Product mix

      ·                  Injury type mix

      ·                  Changes in underwriting standards

      Personal automobile liability

      The personal automobile product line is a mix of property and liability coverages and, therefore, includes both short and long tail coverages. The payments that are made quickly typically pertain to auto physical damage (property) claims and property damage (liability) claims. The payments that take longer to finalize and are more difficult to estimate relate to bodily injury claims. Personal automobile reserves are typically analyzed in three components: bodily injury liability, property damage liability, and collision/comprehensive claims. This last component has minimum reserve risk and fast payouts and, accordingly, separate factors are not presented. Reporting lags are relatively short and the claim settlement process for personal automobile liability generally is the least complex of the liability products. It is generally viewed as a high frequency, low to moderate severity product line.

      Examples of common reserving factors that can change and, thus, affect the estimated personal automobile liability reserves include:

      Personal automobile liability reserving factors

      ·                  Trends in jury awards

      ·                  Changes in the underlying court system and its philosophy

      ·                  Changes in case law

      ·                  Litigation trends

      ·                  Frequency of claims with payment capped by policy limits

      ·                  Change in average severity of accidents, or proportion of severe accidents

      ·                  Subrogation opportunities

      ·                  Degree of patient responsiveness to treatment

      ·                  Changes in claim handling philosophies (e.g., case reserving standards)


      Personal automobile liability book of business reserving factors

      ·                  Changes in policy provisions (e.g., deductibles, policy limits, or endorsements)

      ·                  Changes in underwriting standards

      Multiple peril

      Commercial multiple peril provides a combination of property and liability coverage typically for small businesses and, therefore, includes both short and long tail coverages. For property coverage, it generally takes a relatively short period of time to close claims, while for the other coverages, generally for the liability coverages, it takes a longer period of time to close claims. The reserving risk for this line is dominated by the liability coverage portion of this product, except occasionally in the event of catastrophic or large single losses.

      Multiple peril liability reserves here are generally analyzed as two components: bodily injury and property damage. Bodily injury payments reimburse the claimant for damages pertaining to physical injury as a result of the policyholder’s legal obligation arising from non-intentional acts such as negligence, subject to the insurance policy provisions. In some cases the damages can include future wage loss (which is a function of future earnings power and wage inflation) and future medical treatment costs. Property damage payments result from damages to the claimant’s private property arising from the policyholder’s legal obligation for non-intentional acts. In most cases, property damage losses are a function of costs as of the loss date, or soon thereafter. Defense costs are also a part of the insured costs covered by liability policies and can be significant, sometimes greater than the cost of the actual paid claims, though for some products this risk is mitigated by policy language such that the insured portion of defense costs erodes the amount of policy limit available to pay the claim.

      Multiple peril liability is generally considered a long tail line, as it takes a relatively long period of time to finalize and settle claims from a given accident year. The speed of claim reporting and claim settlement is a function of the specific coverage provided and the jurisdiction, among other factors. There are numerous components underlying the multiple peril liability product line. Some of these have relatively moderate payment patterns (with most of the claims for a given accident year closed within 5 to 7 years), while others can have extreme lags in both reporting and payment of claims (e.g., a reporting lag of a decade for “construction defect” claims).

      Examples of common reserving factors that can change and, thus, affect the estimated multiple peril liability reserves include:

      Multiple peril liability reserving factors

      ·                  Changes in claim handling philosophies (e.g., case reserving standards)

      ·                  Changes in policy provisions or court interpretations of such provisions

      ·                  New theories of liability

      ·                  Trends in jury awards

      ·                  Changes in the propensity to sue, in general with specificity to particular issues

      ·                  Changes in statutes of limitations

      ·                  Changes in the underlying court system

      ·                  Distortions from losses resulting from large single accounts or single issues

      ·                  Changes in tort law

      ·                  Shifts in law suit mix between federal and state courts

      ·                  Changes in settlement patterns

      Multiple peril liability book of business reserving factors

      ·                  Changes in policy provisions (e.g., deductibles, policy limits, or endorsements)

      ·                  Changes in underwriting standards

      ·                  Product mix (e.g., size of account, industries insured, or jurisdiction mix)


      Commercial automobile liability

      The commercial automobile product line is a mix of property and liability coverages and, therefore, includes both short and long tail coverages. The payments that are made quickly typically pertain to auto physical damage (property) claims and property damage (liability) claims. The payments that take longer to finalize and are more difficult to estimate relate to bodily injury claims. Commercial automobile reserves are typically analyzed in three components; bodily injury liability, property damage liability, and collision/comprehensive claims. This last component has minimum reserve risk and fast payouts and, accordingly, separate reserving factors are not presented. In general, claim reporting lags are minor, claim complexity is not a major issue, and the line is viewed as high frequency, low to moderate severity.

      Examples of common reserving factors that can change and, thus, affect the estimated commercial automobile liability reserves include:

      Bodily injury and property damage liability reserving factors

      ·                  Trends in jury awards

      ·                  Changes in the underlying court system

      ·                  Changes in case law

      ·                  Litigation trends

      ·                  Frequency of claims with payment capped by policy limits

      ·                  Change in average severity of accidents, or proportion of severe accidents

      ·                  Subrogation opportunities

      ·                  Changes in claim handling philosophies (e.g., case reserving standards)

      ·                  Frequency of visits to health providers

      ·                  Number of medical procedures given during visits to health providers

      ·                  Types of health providers used

      ·                  Types of medical treatments received

      ·                  Changes in cost of medical treatments

      ·                  Degree of patient responsiveness to treatment

      Commercial automobile liability book of business reserving factors

      ·                  Changes in policy provisions (e.g., deductibles, policy limits, or endorsements)

      ·                  Changes in mix of insured vehicles (e.g., long-haul trucks versus local and smaller vehicles, or fleet risks versus non-fleet risks)

      ·                  Changes in underwriting standards

      General liability

      See the above discussions under the liability product lines with regard to reserving factors for multiple peril.

      Homeowners/Farmowners

      Homeowners/Farmowners is generally considered a short tail coverage. Most payments are related to the property portion of the policy, where the claim reporting and settlement process is generally restricted to the insured and the insurer. Claims on property coverage are typically reported soon after the actual damage occurs, although delays of several months are not unusual. The resulting settlement process is typically fairly short term, although exceptions do exist. The liability portion of the homeowners/farmowners policy generates claims which take longer to pay due to the involvement of litigation and negotiation, but with generally small reporting lags. Overall, the line is generally high frequency, low to moderate severity (except for catastrophes), with simple to moderate claim complexity.


      Examples of common reserving factors that can change and, thus, affect the estimated homeowners/farmowners reserves include:

      Non-catastrophe reserving factors

      ·                  Salvage opportunities

      ·                  Amount of time to return property to residential use

      ·                  Changes in weather patterns

      ·                  Local building codes

      ·                  Litigation trends

      ·                  Trends in jury awards

      Catastrophe reserving factors

      ·                  Physical concentration of policyholders

      ·                  Availability and cost of local contractors

      ·                  Local building codes

      ·                  Quality of construction of damaged homes

      ·                  Amount of time to return property to residential use

      ·                  For the more severe catastrophic events, “demand surge” inflation, whereby the greatly increased demand for building materials such as plywood far surpasses the immediate supply, leading to short-term material increases in building material costs

      Homeowners/Farmowners book of business reserving factors

      ·                  Policy provisions mix (e.g., deductibles, policy limits, or endorsements)

      ·                  Degree of concentration of policyholders

      ·                  Changes in underwriting standards

      OneBeacon Loss and LAE Development

      Loss and LAE development—2006

      In 2006, OneBeacon experienced $23 million of unfavorable development on prior accident year loss and LAE reserves, primarily due to additional losses incurred on hurricanes Katrina, Rita and Wilma in OBSP.

      Loss and LAE development—2005

      In 2005, OneBeacon experienced $95 million of unfavorable development on prior accident year loss and LAE reserves, primarily due to higher than anticipated legal defense costs and higher damages from liability assessments in general liability and multiple peril reserves in its run-off operations.

      Specifically, OneBeacon’s management had assumed at December 31, 2004 that the IBNR and known case development would be approximately 26% of actual case reserves for the 2001 and prior accident years for multiple peril and general liability. During 2005, case incurred loss and LAE was 72% of the entire future expected development which was unusually large for these long tail lines of business. As a result, OneBeacon’s management increased IBNR reserves for these lines so that as of year end 2005 the IBNR was approximately 40% relative to the remaining case reserves.


      Loss and LAE development—2004

      OneBeacon experienced $99 million of net unfavorable development on prior accident year loss and LAE reserves during 2004, relating primarily to 2002 and prior accident years. The net unfavorable development related primarily to personal auto liability, general liability and multiple peril reserves due in part to emerging trends in claims experienced in its run-off operations, including national account and program claims administered by third parties. These claim trends principally included higher defense costs and higher damages from liability assessments.

      Prior to 2004, OneBeacon’s management had made assumptions that case reserving standards and settlement practices in the run-off operations would be consistent with the standards and practices that were observed in the ongoing operations. During 2004, multiple peril liability and general liability case incurred loss and LAE for run-off claims was double that for ongoing claims. As a result, OneBeacon’s management increased the overall level of reserves for run-off during 2004. In addition, OneBeacon’s management undertook a more in depth review of the standards and practices as they applied to run-off claims and formed a separate run-off claims unit.

      OneBeacon’s Case and IBNR Reserves by Line of Business

      OneBeacon’s net loss and LAE reserves by line of business at December 31, 20042006 and 20032005 were as follows:


       December 31, 2004
       December 31, 2003
      Net loss and LAE reserves by class of business

       

      December 31, 2006

       

      December 31, 2005

       

      Case
       IBNR
       Total
       Case
       IBNR
       Total

       ($ in millions)

      Workers compensation $362.1 $135.5 $497.6 $600.8 $176.6 $777.4

      Millions

       

      Case

       

      IBNR

       

      Total

       

      Case

       

      IBNR

       

      Total

       

      Workers compensation (1)

       

      $

      82.0

       

      $

      136.3

       

      $

      218.3

       

      $

      195.2

       

      $

      132.6

       

      $

      327.8

       

      Personal automobile liability  530.7  244.1  774.8  512.0  227.3  739.3

       

      378.6

       

      187.5

       

      566.1

       

      445.5

       

      174.7

       

      620.2

       

      Multiple peril  359.3  264.3  623.6  398.5  296.1  694.6

      Multiple peril (1)(2)

       

      237.9

       

      193.0

       

      430.9

       

      310.4

       

      236.0

       

      546.4

       

      Commercial automobile liability  203.8  82.8  286.6  290.2  132.1  422.3

       

      110.2

       

      66.2

       

      176.4

       

      140.2

       

      65.6

       

      205.8

       

      General liability  121.6  151.1  272.7  154.9  176.6  331.5

      General liability (2)

       

      77.0

       

      281.1

       

      358.1

       

      106.1

       

      227.2

       

      333.3

       

      Homeowners/Farmowners  82.2  41.8  124.0  102.1  68.0  170.1

       

      72.7

       

      33.4

       

      106.1

       

      81.1

       

      41.4

       

      122.5

       

      Other  97.5  84.0  181.5  63.8  58.2  122.0
       
       
       
       
       
       

      Other (1)

       

      105.2

       

      67.4

       

      172.6

       

      115.5

       

      59.9

       

      175.4

       

      Total $1,757.2 $1,003.6 $2,760.8 $2,122.3 $1,134.9 $3,257.2

       

      $

      1,063.6

       

      $

      964.9

       

      $

      2,028.5

       

      $

      1,394.0

       

      $

      937.4

       

      $

      2,331.4

       

       
       
       
       
       
       

              For OneBeacon, the(1)   Includes loss and LAE reserves related to A&E.

      (2)   Includes loss and LAE reserves related to construction defect claims.

      OneBeacon’s Range of Reserves by Line of Business

      OneBeacon’s range of reserve estimates at December 31, 20042006 was evaluated to consider the strengths and weaknesses of the actuarial methods applied against OneBeacon'sOneBeacon’s historical claims experience data. The following table shows the recorded reserves and the high and low ends of OneBeacon'sOneBeacon’s range of reasonable loss reserve estimates at December 31, 2004.2006. The high and low ends of OneBeacon'sOneBeacon’s range of reserve estimates in the table below are based on the results of various actuarial methods described above.

      OneBeacon net loss and LAE reserves by line of business
      Range and recorded reserves

       

      December 31, 2006

       

      Millions

       

      Low

       

      Recorded

       

      High

       

      Workers compensation

       

      $

      183

       

      $

      218.3

       

      $

      304

       

      Personal automobile liability

       

      502

       

      566.1

       

      582

       

      Multiple peril

       

      401

       

      430.9

       

      526

       

      Commercial automobile liability

       

      169

       

      176.4

       

      190

       

      General liability

       

      283

       

      358.1

       

      382

       

      Homeowners/Farmowners

       

      93

       

      106.1

       

      107

       

      Other

       

      159

       

      172.6

       

      174

       

      Total

       

      $

      1,790

       

      $

      2,028.5

       

      $

      2,265

       


      The recorded reserve for eachreserves represent management’s best estimate of unpaid loss and LAE by line of business. OneBeacon uses the results of several different actuarial methods to develop its estimate of ultimate reserves. While OneBeacon has not determined the statistical probability of actual ultimate paid losses falling within the range, OneBeacon believes that it is reasonably likely that actual ultimate paid losses will fall within the result ofranges noted above because the ranges were developed by using several different generally accepted actuarial method that management believes to be most appropriate based on known facts and trends.methods.

       
       December 31, 2004
      OneBeacon net loss and LAE reserves by line of business
      Range and recorded reserves

       Low
       Recorded
       High
       
       ($ in millions)

      Workers compensation $475 $498 $555
      Personal automobile liability  665  774  780
      Multiple peril  590  624  835
      Commercial automobile liability  265  286  310
      General liability  240  273  295
      Homeowners/Farmowners  105  124  125
      Other  155  182  185
        
       
       
      Total $2,495 $2,761 $3,085
        
       
       

      The probability that ultimate losses will fall outside of the ranges of estimates by line of business is higher for each line of business individually than it is for the sum of the estimates for all lines taken together due to the effects of diversification. The diversification effects result from the fact that losses across OneBeacon’s different lines of business are not completely correlated. Although managementOneBeacon believes OneBeacon'sits reserves are reasonably stated, ultimate losses may deviate, perhaps materially, from the recorded reserve amounts and could be above the high end of the range of actuarial projections. This is because ranges are developed based on known events as of the valuation date, whereas the ultimate disposition of losses is subject to the outcome of events and circumstances that may be unknown as of the valuation date.

      The recorded reservespercentages shown in the following table represent management's best estimatethe linear interpolation of unpaidwhere OneBeacon’s recorded loss and LAE reserves are within the range of reserves estimates by line of business. In its selection of recorded reserves, management has generally given greater weight to adjusted paid loss development methods, which are not dependent on the consistency of case reserving practices, rather than methods that rely on incurred losses, because of the increased adequacy of case reserving by OneBeacon's claim staff in the recent past. For multiple peril this resulted in OneBeacon recording reserves nearerbusiness at December 31, 2006 and 2005, where the low end of the range. range equals zero, the middle of the range equals 50% and the high end of the range equals 100%.

      OneBeacon net loss and LAE reserves by line of business

       

      December 31,

       

      (expressed as a percentage of the range)

       

      2006

       

      2005

       

      Workers compensation

       

      29

      %

      39

      %

      Personal automobile liability

       

      81

       

      61

       

      Multiple peril

       

      24

       

      30

       

      Commercial automobile liability

       

      33

       

      37

       

      General liability

       

      75

       

      57

       

      Homeowners/Farmowners

       

      93

       

      83

       

      Other

       

      91

       

      78

       

      Total

       

      50

      %

      46

      %

      For some types of claims, such as workers compensation, and construction defect, management also considered special purposeOneBeacon used forecasting models that its claims and actuarial staff have created that consider the unique loss development characteristics of these types of claims. As a result of the trends suggested by these models, OneBeacon chose a point estimate that was at a lower point in the range at December 31, 2006 as compared to the prior year. OneBeacon selected a point estimate higher in the range for newer and/or growing segments of business, in part based on OneBeacon’s view that actuarial methods that rely on historical loss and LAE patterns may have a higher degree of uncertainty for these businesses. As these segments accumulate more historical data, OneBeacon’s selections place greater reliance on the emerging experience. For personal automobile liability, this resulted in OneBeacon recording reserves at the higher end of the range in 2006, reflecting a more conservative view of recently emerging favorable loss experience. OneBeacon also selected a point estimate higher in the range for general liability in 2006 as the reserves in this line are increasingly related to OneBeacon’s growing professional liability business. For homeowners and "other"“other” (principally shorter



      tailed lines of business such as ocean and inland marine insurance) recorded reserves remain ratherat the high in theend of their respective ranges, as management'sOneBeacon’s selections reflect a conservative approach to recognition of recent favorable incurred loss development experiencedpatterns.

      80




      Sensitivity Analysis

      The following discussion includes disclosure of possible variations from current estimates of loss reserves due to a change in our ongoing businesses.certain key assumptions. Each of the impacts described below is estimated individually, without consideration for any correlation among key assumptions or among lines of business. Therefore, it would be inappropriate to take each of the amounts described below and add them together in an attempt to estimate volatility for OneBeacon’s reserves in total. It is important to note that the variations discussed are not meant to be a worst-case scenario, and therefore, it is possible that future variations may be more than amounts discussed below.

      ·                  Workers compensation: Recorded reserves for workers compensation were $218 million at December 31, 2006. The two most important assumptions for workers compensation reserves are loss development factors and loss cost trends, particularly medical cost inflation. Loss development patterns are dependent on medical cost inflation. Approximately half of the workers compensation net reserves are related to future medical costs. Across the entire reserve base, a 0.5 point change in calendar year medical inflation would have changed the estimated net reserve by $54 million at December 31, 2006, in either direction.

      ·                  Personal automobile liability: Recorded reserves for personal auto liability were $566 million across all lines at December 31, 2006. Personal auto liability reserves are shorter-tailed than other lines of business (such as workers compensation) and, therefore, less volatile. However, the size of the reserve base means that future changes in estimate could be material to OneBeacon’s results of operations in any given period. A key assumption for personal auto liability is the implicit loss cost trend, particularly the severity trend component of loss costs. A 2.0 point change in assumed annual severity for the two most recent accident years would have changed the estimated net reserve by $16 million at December31, 2006, in either direction. Assumed annual severity for accident years prior to the two most recent accident years is likely to have minimal variability.

      ·                  Multiple peril liability and general liability: Recorded reserves for multiple peril and general liability combined were $789 million at December 31, 2006. Reported loss development patterns are a key assumption for these lines of business, particularly for more mature accident years. Historically, assumptions on reported loss development patterns have been impacted by, among other things, emergence of new types of claims (e.g. construction defect claims) or a shift in the mixture between smaller, more routine claims and larger, more complex claims. If the severity trend for construction defect claims changed by 3.0 points this would have changed the estimated net reserve by $11 million at December 31, 2006, in either direction. Separately, if case reserve adequacy for non construction defect claims changed by 10.0 points this would have changed the estimated net reserve by $23 million at December 31, 2006, in either direction.

      White Mountains Re

        White Mountains Re A&E Reserves

      White Mountains ReRe’s A&E exposure is primarily from reinsurance contracts written between 1974 through 1985 by Folksamerica predecessor companies (MONY Reinsurance and Christiania General). The exposures are mostly higher layer excess of loss treaty and facultative coverages with relatively low limits exposed for each claim. Folksamerica has a specialized unit that handles claims emanating fromrelating to A&E exposures. The issues presented by these types of claims require specialization, expertise and an awareness of the various trends and jurisdictional developments.

              White Mountains Re's A&E exposure is primarily from reinsurance contracts written between 1974 through 1985 by predecessor companies (MONY Reinsurance and Christiania General). The exposures are predominately higher layer excess of loss treaty and facultative coverages with relatively low limits exposed for each claim. Net incurred loss activity for asbestos and environmental in the last two years was as follows:


       December 31,
      Net incurred loss and LAE activity

       

      December 31,

       

      2004
       2003

       ($ in millions)

      Millions

       

      2006

       

      2005

       

      Asbestos $2.6 $32.0

       

      $

      (0.1

      )

      $

      62.0

       

      Environmental .1 3.7

       

      (0.2

      )

      (3.4

      )

       
       
      Total $2.7 $35.7

       

      $

      (0.3

      )

      $

      58.6

       

       
       

       


      In recent years, most of2004, White Mountains Re's reported activityRe experienced an increase in the number and amount of reported asbestos area has relatedclaims, primarily due to (1) higher layer excess policies that are being reached by larger target defendants, (2) new notices for smaller regional defendants that are nowincreased claim filings from uninjured claimants who may have been exposed becauseto asbestos. This resulted in a change in its assumption regarding the level of the larger defendant bankruptcies, and (3) new notices on "premises" and "non-products" cases, where coverage is being sought by insureds against the non-aggregating portion of the underlying policy. WM Re expectsprojected future asbestos claims to see a smaller percentage of these losses exceed the retention level under reinsurance agreements.

              Approximately $25.0 million ofbe paid. During 2005, White Mountains Re's 2003 loss development forRe completed a detailed, ground up asbestos exposures wasstudy on all reported Folksamerica insureds that had over $250,000 of asbestos claims as well as a bulksignificant sample of all other insureds with reported asbestos claims of less than $250,000. Comparing estimates generated by the study to Folksamerica exposed limits by underwriting year led to an increase of approximately $50 million in IBNR resulting fromduring the completionthird quarter of a detailed A&E market share study. This study compared White Mountains Re's share of industry paid losses to estimated industry carried reserves.2005.

      Generally, White Mountains Re sets up claim files for each reported claim by each cedent for each individual insured. In many instances, a single claim notification from a cedent could involve several years and layers of coverage resulting in a file being set up for each involvement. Precautionary claim notices are submitted by the ceding companies in order to preserve their right to pursue coverage under the reinsurance contract. Such notices do not contain an incurred loss amount, to White Mountains Re, accordingly, an open claim file is not established. As of December 31, 2004,2006, White Mountains Re had approximately 1,3681,173 open claim files for asbestos and 786512 open claim files for environmental exposures.

      The costs associated with administering the underlying A&E claims by White Mountains Re'sRe’s clients tend to be higher than non-Anon A&E claims due to generally higher legal costs incurred by ceding companies in connection with A&E claims ceded to White Mountains Re under the reinsurance contracts.



        White Mountains Re A&E Claims Activity

      White Mountains Re'sRe’s A&E claim activity for the last two years is illustrated in the table below.

       
       Year ended
      December 31,

       
      A&E Claims Activity

       
       2004
       2003
       
      Asbestos     
      Total asbestos claims at the beginning of the year 1,185 1,069 
      Incoming asbestos claims due to Sirius Acquisition 199  
      Asbestos claims reported during the year 292 224 
      Asbestos claims closed during the year (308)(108)
        
       
       
      Total asbestos claims at the end of the year 1,368 1,185 
        
       
       
      Environmental     
      Total environmental claims at the beginning of the year 743 768 
      Incoming environmental claims due to Sirius Acquisition 106  
      Environmental claims reported during the year 138 47 
      Environmental claims closed during the year (201)(72)
        
       
       
      Total environmental claims at the end of the year 786 743 
        
       
       
      Total     
      Total A&E claims at the beginning of the year 1,928 1,837 
      Incoming A&E claims due to Sirius Acquisition 305  
      A&E claims reported during the year 430 271 
      A&E claims closed during the year (509)(180)
        
       
       
      Total A&E claims at the end of the year 2,154 1,928 
        
       
       

         

         

        Year ended

         

         

         

        December 31,

         

        A&E Claims Activity

         

        2006

         

        2005

         

        Asbestos

         

         

         

         

         

        Total asbestos claims at the beginning of the year

         

        1,339

         

        1,401

         

        Outgoing asbestos claims due to Sirius America divestiture

         

        (20

        )

         

        Incoming asbestos claims due to Mutual Service acquisition

         

        45

         

         

        Asbestos claims reported during the year

         

        186

         

        223

         

        Asbestos claims closed during the year

         

        (377

        )

        (285

        )

        Total asbestos claims at the end of the year

         

        1,173

         

        1,339

         

        Environmental

         

         

         

         

         

        Total environmental claims at the beginning of the year

         

        750

         

        900

         

        Incoming environmental claims due to Mutual Service acquisition

         

        43

         

         

        Environmental claims reported during the year

         

        46

         

        65

         

        Environmental claims closed during the year

         

        (327

        )

        (215

        )

        Total environmental claims at the end of the year

         

        512

         

        750

         

        Total

         

         

         

         

         

        Total A&E claims at the beginning of the year

         

        2,089

         

        2,301

         

        Outgoing A&E claims due to Sirius America divestiture

         

        (20

        )

         

        Incoming A&E claims due to Mutual Service acquisition

         

        88

         

         

        A&E claims reported during the year

         

        232

         

        288

         

        A&E claims closed during the year

         

        (704

        )

        (500

        )

        Total A&E claims at the end of the year

         

        1,685

         

        2,089

         


        Loss and LAE Reserves by Class of Business

      White Mountains Re establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for reinsured events that have already occurred. The estimation of net reinsurance loss and LAE reserves is subject to the same risk as the estimation of insurance loss and LAE reserves. In addition to those risk factors which give rise to inherent uncertainties in establishing insurance loss and LAE reserves, the inherent uncertainties of estimating such reserves are even greater for the reinsurer, due primarily to: (1) the claim-tail for reinsurers being further extended because claims are first reported to the cedingoriginal primary insurance company and then through one or more intermediary insurersintermediaries or reinsurers, (2) the diversity of loss development patterns among different types of reinsurance treaties or facultative contracts, (3) the necessary reliance on the ceding companies for information regarding reported claims and (4) the differing reserving practices among ceding companies.

      As with insurance reserves, the process of estimating reinsurance reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain. Based on the above, such uncertainty may be larger relative to the reserve for a reinsurer compared to an insurance company, and may take a longer time to emerge.

      In order to reduce the potential uncertainty of loss reserve estimation, White Mountains Re obtains information from numerous sources to assist in the process. White Mountains Re'sRe’s pricing actuaries devote considerable effort to understanding and analyzing a ceding company'scompany’s operations and loss history during the underwriting of the business, using a combination of ceding company and industry statistics. Such statistics normally include historical premium and loss data by class of business, individual claim information for larger claims, distributions of insurance limits provided, loss reporting



      and payment patterns, and rate change history. This analysis is used to project expected loss ratios for each treaty during the upcoming contract period. These expected ultimate loss ratios are aggregated across all treaties and are input directly into the loss reserving process to generate the expected loss ratios that are used to estimate IBNR.

      Upon notification of a loss from a ceding company, White Mountains Re establishes case reserves, including LAE reserves, based upon White Mountains Re'sRe’s share of the amount of reserves established by the ceding company and ourits independent evaluation of the loss. In cases where available information indicates that reserves established by the ceding company are inadequate, White Mountains Re establishes case reserves or IBNR in excess of its share of the reserves established by the ceding company. In addition, specific claim information reported by ceding companies or obtained through claim audits can alert us to emerging trends such as changing legal interpretations of coverage and liability, claims from unexpected sources or classes of business, and significant changes in the frequency or severity of individual claims. Such information is often used to supplement estimates of IBNR.

      As mentioned above, there can be a considerable time lag from the time a claim is reported to a ceding company to the time it is reported to the reinsurer. The lag can be several years in some cases. This lag can be due to a number of reasons, including the time it takes to investigate a claim, delays associated with the litigation process, the deterioration in a claimant'sclaimant’s physical condition many years after an accident occurs, etc. In its loss reserving process, White Mountains Re assumes that such lags are predictable, on average, over time and therefore the lags are contemplated in the loss reporting patterns used in its actuarial methods. This means that, as a reinsurer, White Mountains Re must rely on such actuarial estimates for a longer period of time after reserves are first estimated than does a primary insurance company.

      Backlogs in the recording of assumed reinsurance can also complicate the accuracy of loss reserve estimation. As of December 31, 2004,2006, there were no significant backlogs related to the processing of assumed reinsurance information at White Mountains Re.

      White Mountains Re relies heavily on information reported by ceding companies, as discussed above. In order to determine the accuracy and completeness of such information, White Mountains Re's U.S.Re underwriters, actuaries, and claims personnel perform regular audits of Folksamerica'scertain ceding companies. While regularcompanies where customary. Generally, ceding company audits are not customary outside the United States, Sirius International's staff regularlyStates. In such cases, White Mountains Re reviews information from ceding companies for unusual or unexpected results. Any material findings are discussed with the ceding companies. White Mountains Re sometimes encounters situations where we determine that a claim presentation from a ceding company is not in accordance with contract terms. In these situations, White Mountains Re attempts to resolve the dispute directly with the ceding company. Most situations are resolved amicably and without the need for litigation or arbitration. However, in the infrequent situations where a resolution is not possible, White Mountains Re will vigorously defend ourits position in such disputes.


              Although loss and LAE reserves are initially determined based on underwriting and pricing analysis, White Mountains Re constantly tests the accuracy of reserves using a variety of generally accepted actuarial methods, including historical incurred and paid loss development methods. If actual loss activity differs substantially from expectations based on historical information, an adjustment to loss reserves may be warranted. As time passes, loss reserve estimates for a given accident year will rely more on actual loss activity and historical patterns than on initial assumptions based on pricing indications.

      White Mountains Re also obtainobtains reinsurance whereby another reinsurer contractually agrees to indemnify White Mountains Re for all or a portion of the reinsurance risks underwritten by White Mountains Re. Such arrangements, where one reinsurer provides reinsurance to another reinsurer, are usually referred to as "retrocessional reinsurance"“retrocessional reinsurance” arrangements. White Mountains Re establishes estimates of amounts recoverable from retrocessional reinsurance in a manner consistent with the loss



      and LAE liability associated with reinsurance contracts offered to its customers (the "ceding companies"“ceding companies”), net of an allowance for uncollectible amounts, if any. Net reinsurance loss reserves represent loss and LAE reserves reduced by retrocessional reinsurance recoverable on unpaid losses.

      Although loss and LAE reserves are initially determined based on underwriting and pricing analyses, White Mountains Re'sRe regularly reviews the adequacy of its recorded reserves by using a variety of generally accepted actuarial methods, including historical incurred and paid loss development methods. If actual loss activity differs substantially from expectations, an adjustment to recorded reserves may be warranted. As time passes, loss reserve estimates for a given accident year will rely more on actual loss activity and historical patterns than on initial assumptions based on pricing indications.

      White Mountains Re’s expected annual loss reporting assumptions are updated once a year, at year end. These assumptions are applied to year-end IBNR to generate expected reported losses for the subsequent year. Interpolation methods are applied to estimate quarterly reported losses, which are then compared to actual reported losses each quarter. Significant differences may result in a change in estimates or a revision in the loss reporting pattern. Expected loss ratios underlying the current accident year are updated quarterly, to reflect new business that is underwritten by the company.

      During 2006, White Mountains Re increased its estimate for net losses from hurricanes Katrina, Rita, and Wilma by $86 million following the receipt of new claims information from several ceding companies and subsequent reassessment of ultimate loss exposures. The company also entered into an indemnity agreement with Olympus, which resulted in an additional $137 million in losses and loss expenses. Also in 2006, White Mountains Re increased prior year loss and LAE reserves by $55 million for casualty losses associated with the Risk Capital acquisition, primarily as a result of a detailed study of loss exposure by individual contract. Reserves for 2004 and prior years were decreased by $46 million at Sirius in 2006, as we have seen lower than expected loss emergence across all lines of business and have reduced IBNR accordingly.

      In 2005, White Mountains Re changed its assumptions relating to asbestos reserves, as discussed above in the A&E section. In 2004, White Mountains Re reduced its loss ratio assumptions for property and other short-tailed business written at Sirius in 2002 and 2003, resulting in a decrease of $35 million in loss reserves related to prior years. This was due to improved terms and conditions in reinsurance contracts written after the terrorist attacks of September 11, 2001, which had a greater impact on lowering loss ratios than had been expected in the original loss ratio assumptions. Also in 2004, White Mountains Re increased its estimates of prior year loss reserves by $55 million on long-tailed U.S. casualty contracts written between 1997 and 2001 at Folksamerica and Scandinavian Re. This was due to a higher than expected level of loss reporting, which caused White Mountains Re to raise its expected loss ratio assumptions and to lengthen the expected reporting tail for those contracts.

      White Mountains Re’s net loss and LAE reserves by class of business at December 31, 20042006 and 20032005 were as follows:


       December 31, 2004
       December 31, 2003
      Net loss and LAE reserves by class of business
      ($ in millions)

      Case
       IBNR
       Total
       Case
       IBNR
       Total

      Net loss and LAE reserves by class of business

       

      December 31, 2006

       

      December 31, 2005

       

      Millions

       

      Case

       

      IBNR

       

      Total

       

      Case

       

      IBNR

       

      Total

       

      Liability (excluding A&E) $920.4 $900.0 $1,820.4 $364.6 $276.4 $641.0

       

      $

      544.9

       

      $

      964.4

       

      $

      1,509.3

       

      $

      829.3

       

      $

      782.9

       

      $

      1,612.2

       

      Property  143.3  318.0  461.3  68.5  149.0  217.5

       

      332.3

       

      196.1

       

      528.4

       

      357.7

       

      342.2

       

      699.9

       

      Accident & Health and Other  279.5  187.5  467.0  25.9  66.4  92.3

      Specialty

       

      273.0

       

      143.3

       

      416.3

       

      233.9

       

      138.4

       

      372.3

       

      A&E  50.2  24.8  75.0  35.0  44.2  79.2

       

      44.0

       

      68.4

       

      112.4

       

      42.0

       

      75.4

       

      117.4

       

       
       
       
       
       
       
      Total $1,393.4 $1,430.3 $2,823.7 $494.0 $536.0 $1,030.0

       

      $

      1,194.2

       

      $

      1,372.2

       

      $

      2,566.4

       

      $

      1,462.9

       

      $

      1,338.9

       

      $

      2,801.8

       

       
       
       
       
       
       

      The actuarial methods described above are used to calculate a point estimate of loss and LAE reserves for each company within White Mountains Re establishes loss reserves based on a singleRe. These point estimates are then aggregated to produce an actuarial point estimate which is management's best estimate of ultimate losses and loss expenses. This "best estimate" is derived from a combination of methods as described above.for the entire segment. Once a point estimate is established, White Mountains Re'sRe’s actuaries estimate loss reserve ranges to measure the sensitivity of the actuarial assumptions used to set the point estimates. These ranges are calculated using similar methods to the point estimate calculation, but with different expected loss ratio and loss reporting pattern assumptions. For the low estimate, more optimistic loss ratios and faster reporting patterns are


      assumed, while the high estimate uses more conservative loss ratios and slower reporting patterns. These variable assumptions are derived from historical variations in loss ratios and reporting patterns by class and type of business. Due

      The actuarial point estimate is management’s primary consideration in determining its best estimate of loss and LAE reserves. In making its best estimate, management also considers other qualitative factors that may lead to a difference between its best estimate of loss and LAE reserves and the inherent difficultiesactuarial point estimate. Typically, these factors exist when management and the company’s actuaries conclude that there is insufficient historical incurred and paid loss information or that trends included in estimating ultimate A&E exposures, White Mountains Re does notthe historical incurred and paid loss information are unlikely to repeat in the future. These factors may include, among others, changes in the techniques used to assess underwriting risk, more accurate and detailed levels of data submitted with reinsurance applications, the uncertainty of the current reinsurance pricing environment, the level of inflation in loss costs, changes in ceding company reserving practices, and legal and regulatory developments. At December 31, 2006 and 2005, total carried reserves were 2.2% and 0.7% above the actuarial point estimate, ranges for these reserves. The growth in reserves from 2003 to 2004 was driven by acquisitions made during 2004.respectively.

      The following table illustrates White Mountains Re'sRe’s recorded net loss and LAE reserves and high and low estimates for those classes of business for which a range is calculated, at December 31, 2004.2006.


       December 31, 2004
      Net loss and LAE reserves by class of business
      ($ in millions)

      Low
       Recorded
       High

      Net loss and LAE reserves by class of business

       

      December 31, 2006

       

      Millions

       

      Low

       

      Recorded

       

      High

       

      Liability (excluding A&E)Liability (excluding A&E) $1,670 $1,821 $1,990

       

      $

      1,342

       

      $

      1,509.3

       

      $

      1,676

       

      PropertyProperty 420 461 490

       

      503

       

      528.4

       

      553

       

      Accident & Health and Other 400 467 550
       
       
       
      Sub-total $2,490 $2,749 $3,030
       
       
       

      Specialty

       

      354

       

      416.3

       

      486

       

      A&EA&E   75  

       

      80

       

      112.4

       

      154

       

         
        
      TotalTotal   $2,824  

       

      $

      2,279

       

      $

      2,566.4

       

      $

      2,869

       

         
        

       

      The probability that ultimate losses will fall outside of the rangesrange of estimates by class of business is higher for each class of business individually than it is for the sum of the estimates for all classes taken together due to the effects of diversification. While White Mountains Re has not determined the statistical probability of actual ultimate losses falling within the range, management believes that it is reasonably likely that actual ultimate losses will fall within the ranges noted above because the ranges were developed by using generally accepted actuarial methods.Although management believes reserves for White Mountains Re are reasonably stated, ultimate losses may deviate, perhaps materially, from the recorded reserve amounts and could be above the high end of the range of actuarial projections.


      2. White Mountains Re Reinsurance Estimates

      There is a time lag from the point when premium and related commission and expense activity is recorded by a ceding company to the point when such information is reported by the ceding company, through its reinsurance intermediary, to White Mountains Re. This time lag can vary from one to



      several contractual reporting periods (i.e. quarterly/monthly). This lag is common in the broker market reinsurance business.business, but slightly longer when a reinsurance intermediary is involved.

      As a result of this time lag in reporting, White Mountains Re estimates a portion of its written premium and related commissions and expenses. Given the nature of White Mountains Re'sRe’s business, estimated premium balances, net of related commissions and expenses, comprise a large portion of total premium balances receivable. The estimation process begins by identifying which major accounts have not reported activity at the most recent period end. In general, premium estimates for excess of loss business are based on minimum deposit premium information included in the contractual terms. For proportional business, White Mountains Re'sRe’s estimates are derived based on a variety of factors and assumptions, including: prior reporting from the broker or ceding company, historical reporting patterns, expected premium volume based on contractual terms or ceding company reports and other correspondence and communication with underwriters, brokers, intermediaries and ceding companies. companies, prior reporting from the intermediary or ceding company and historical reporting patterns. Once premium estimates are determined, related commission and expense estimates are derived using contractual terms.

      White Mountains Re closely monitors its estimation process on a quarterly basis and adjusts its estimates as more information and actual amounts become known. There is no assurance that the amounts estimated by White Mountains Re will not deviate from the amounts reported by the ceding company or reinsurance broker.intermediary. Any such deviations are reflected in the results of operations when they become known.


      The following table summarizes White Mountains Re'sRe’s premium estimates and related commissions and expenses:

       
       December 31, 2004
      Millions

       Liability
       Property
       Accident &
      Health

       Other
       Total
      Gross premium estimates $150.7 $234.8 $41.9 $72.9 $500.3
      Net premium estimates  148.5  129.1  33.6  65.5  376.7
      Net commission and expense estimates  43.3  12.9  8.4  15.9  80.5
        
       
       
       
       
      Net amount included in reinsurance balances receivable $105.2 $116.2 $25.2 $49.6 $296.2
        
       
       
       
       
       
       December 31, 2003
      Millions

       Liability
       Property
       Accident &
      Health

       Other
       Total
      Gross premium estimates $126.6 $159.1 $22.5 $21.0 $329.2
      Net premium estimates  126.6  75.5  22.5  10.4  235.0
      Net commission and expense estimates  41.5  6.0  7.1  2.1  56.7
        
       
       
       
       
      Net amount included in reinsurance balances receivable $85.1 $69.5 $15.4 $8.3 $178.3
        
       
       
       
       

       

       

      December 31, 2006

       

      Millions

       

      Liability

       

      Property

       

      Specialty

       

      Total

       

      Gross premium estimates

       

      $

      86.7

       

      $

      162.1

       

      $

      158.4

       

      $

      407.2

       

       

       

       

       

       

       

       

       

       

       

      Net premium estimates

       

      $

      86.0

       

      $

      93.7

       

      $

      140.4

       

      $

      320.1

       

      Net commission and expense estimates

       

      40.6

       

      29.4

       

      41.0

       

      111.0

       


      Net amount included in reinsurance balances receivable

       

      $

      45.4

       

      $

      64.3

       

      $

      99.4

       

      $

      209.1

       

       

       

      December 31, 2005

       

      Millions

       

      Liability

       

      Property

       

      Specialty

       

      Total

       

      Gross premium estimates

       

      $

      123.1

       

      $

      245.0

       

      $

      101.3

       

      $

      469.4

       

       

       

       

       

       

       

       

       

       

       

      Net premium estimates

       

      $

      111.2

       

      $

      123.0

       

      $

      77.5

       

      $

      311.7

       

      Net commission and expense estimates

       

      38.3

       

      26.0

       

      25.5

       

      89.8

       


      Net amount included in reinsurance balances receivable

       

      $

      72.9

       

      $

      97.0

       

      $

      52.0

       

      $

      221.9

       

      The net amounts recorded in reinsurance balances receivable may not yet be due from the ceding company at the time of the estimate since actual reporting from the ceding company has not yet occurred. Therefore, based on the process described above, White Mountains Re believes all of its estimated balances are collectible, and as such no allowance has been recorded.


      3.   Reinsurance Transactions

      White Mountains'Mountains’ insurance and reinsurance subsidiaries purchase reinsurance from time to time to protect their businesses from losses due to exposure aggregation, to manage their operating leverage ratios and to limit ultimate losses arising from catastrophic events. Amounts recoverable from reinsurers are estimated in a manner consistent with the claim liability associated with the reinsured



      policies. Amounts related to reinsurance contracts are recorded in accordance with SFAS No. 113, "Accounting“Accounting and Reporting for Reinsurance of Short-Duration and Long-Duration Contracts" ("Contracts” (“SFAS 113"113”).

      The collectibility of reinsurance recoverables is subject to the solvency and willingness to pay of the reinsurer. The Company is selective in choosing its reinsurers, placing reinsurance principally with those reinsurers with a strong financial condition, industry ratings and underwriting ability. Management monitors the financial condition and ratings of its reinsurers on an ongoing basis. SeeNote 4—Third4 - “Third Party ReinsuranceReinsurance” in the accompanying Consolidated Financial Statements for additional information on White Mountains'Mountains’ reinsurance programs.


      4.    Pension and Post-Retirement Medical Plans

              White Mountains accounts for its pension plans in accordance with SFAS No. 87, "Employers' Accounting for Pensions" ("SFAS 87") and accounts for its retiree medical plan in accordance with SFAS No. 106, "Employers' Accounting for Postretirement Benefits Other Than Pensions" ("SFAS 106"). SFAS 87 and SFAS 106 require that the cost of pension/retiree medical benefits be accrued over the period during which an employee provides service.

              The majority of OneBeacon's pension and retiree medical plans were curtailed in the fourth quarter of 2002. The OneBeacon Pension Plan no longer adds new participants or increases benefits for existing participants. Non-vested participants already in the plan continue to vest during their employment with OneBeacon. Retirees are also eligible for medical benefits if they meet certain age and service requirements. However, due to the curtailment, the plan no longer accepts new participants. The majority of retiree medical costs are capped at defined dollar amounts, with retirees contributing the remainder.

              The projected benefit obligation as of a particular date represents the actuarial present value of all benefits attributed by the plan's benefit formula to employee service rendered prior to that date. Therefore, future cash payments from pension and retiree medical plans are discounted using a discount rate based on published investment grade, long-term corporate bond yields. Many of the factors which are used to determine a plan's projected benefit obligation as of a particular date and the cost of pension/retiree medical benefits for a particular period are dependent upon future events, such as how long the employee and any survivors live, how many years of service the employee is expected to render and the employee's compensation in the years immediately before retirement or termination. Accordingly, the effects of such future factors are estimated. Further, since the projected benefit obligation and the periodic cost of pension/retiree medical benefits are based on actuarial present values, they are also sensitive to changes in the discount rate used to determine such amounts.

              A hypothetical 1% increase in the discount rate would result in a decrease in pension and retiree medical projected benefit obligations of approximately $63 million. A hypothetical 1% decrease in the discount rate would result in an increase in pension and retiree medical projected benefit obligations of approximately $63 million. The impact of a hypothetical 1% change to the discount rate on periodic cost of pension/retiree medical benefits is not significant.

              Additionally, the rate of return that is assumed on plan assets affects OneBeacon's pension expense during a particular period. Since the retiree medical plan is unfunded, it is not affected by changes in the rate of return assumption. OneBeacon performed an analysis of expected long-term rates of return based on the allocation of its pension plan assets as of both December 31, 2004 and December 31, 2003 to develop expected rates of return for each significant asset class or economic indicator. A range of returns was developed based both on forecasts and on broad-market historical benchmarks for expected return, correlation, and volatility for each asset class. Although the expected investment return assumption is long-term in nature, the range of reasonable returns has dropped over the past few years as a consequence of lower inflation and lower bond yields. As a result of the most



      recent review, for 2004 OneBeacon elected to keep the expected return on its pension assets at 7.0%, as was used in 2003. At December 31, 2004, 36% of plan assets were invested in fixed maturity securities, 45% in equities and the remainder in cash, cash equivalents and convertible securities. A hypothetical 1% increase or decrease in the assumed rate of return would result in a pretax change in OneBeacon's pension expense (or income as the case may be) for 2004 of approximately $4.7 million.

              During 2004, OneBeacon recognized pension expense of $3.3 million, which was comprised of net periodic benefit cost of $.4 million and special termination benefits of $2.9 million. Included in the net periodic benefit cost is $32.2 million of expected return on pension plan assets. OneBeacon contributed $4.2 million to the pension plan in 2004. No unrecognized losses on pension assets were recorded since the Company uses the market value method to value plan assets.


      5.   Purchase Accounting

      When White Mountains acquires another company, management must estimate the fair values of the assets and liabilities acquired, as prescribed by SFAS No. 141, "Business Combinations" ("SFAS 141").“Business Combinations.” Certain assets and liabilities require little judgment to estimate their fair values, particularly those that are quoted on a market exchange, such as publicly-traded investment securities. Other assets and liabilities, however, require a substantial amount of judgment to estimate their fair values. The most significant of these is the estimation required to fair value loss and LAE reserves.

      White Mountains estimates the fair value of loss and LAE reserves obtained in an acquisition following the principles contained within FASB Statement of Financial Accounting Concepts No. 7: "Using“Using Cash Flow Information and Present Value in Accounting Measurements" ("Measurements” (“CON 7"7”). Under CON 7, the fair value of a particular asset or liability essentially contains five elements: (1) an estimate of the future cash flows, (2) expectations about possible variations in the amount or timing of those cash flows; (3) the time value of money, represented by the risk-free rate of interest; (4) the


      price for bearing the uncertainty inherent in the asset or liability; and (5) other, sometimes unidentifiable, factors including illiquidity and market imperfections.

      White Mountains'Mountains’ actuaries estimate the fair value of loss and LAE reserves obtained in an acquisition by taking the acquired company'scompany’s recorded reserves and discounting them based on expected reserve payout patterns using the current risk-free rate of interest. Then, White Mountains'Mountains’ actuaries develop additional cash flow scenarios that use different payout and ultimate reserve assumptions deemed to be reasonably possible based upon the inherent uncertainties present in determining the amount and timing of payment of such reserves. In each scenario, the risk-free rate of interest is used to discount future cash flows. These scenarios are put in a statistical model that assigns a probability to each cash flow scenario. White Mountains'Mountains’ actuaries then choose the scenario that best represents the price for bearing the uncertainty inherent within the acquired company'scompany’s recorded reserves. The "price"“price” for bearing the uncertainty inherent within the acquired company'scompany’s reserves is measured as the difference between the selected cash flow scenario and the expected cash flow scenario. The scenario selected has typically been between 1.5 and 2 standard deviations from the expected cash flow outcome. The fair value of the acquired company'scompany’s loss and LAE reserves is determined to be the sum of the expected cash flow scenario (i.e., the acquired company'scompany’s discounted loss and LAE reserves) and the uncertainty "price"“price”.

      The difference between an acquired company'scompany’s loss and LAE reserves and White Mountains'Mountains’ best estimate of the fair value of such reserves at the acquisition date is amortized ratably over the payout period of the acquired loss and LAE reserves. Historically, the fair value of an acquired company'scompany’s loss and LAE reserves has been less than the it's recordedits nominal reserves at acquisition. Accordingly, the amortization has been and will continue to be recorded as an expense on White Mountains'Mountains’ income statement until fully amortized.




      FORWARD-LOOKING STATEMENTS

      The information contained in this report may contain "forward-looking statements"“forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E21 E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included or referenced in this report which address activities, events or developments which White Mountains expects or anticipates will or may occur in the future are forward-looking statements. The words "will"“will”, "believe," "intend," "expect," "anticipate," "project," "estimate," "predict"“believe,” “intend,” “expect,” “anticipate,” “project,” “estimate,” “predict” and similar expressions are also intended to identify forward-looking statements. These forward-looking statements include, among others, statements with respect to White Mountains'Mountains’:

        ·growth in book value per share or return on equity;

        ·business strategy;

        ·financial and operating targets or plans;

        ·incurred losses and the adequacy of its losslosses and LAE reserves;

        reserves and related reinsurance;

        ·projections of revenues, income (or loss), earnings (or loss) per share, dividends, market share or other financial forecasts;

        ·expansion and growth of its business and operations; and

        ·future capital expenditures.

      These statements are based on certain assumptions and analyses made by White Mountains in light of its experience and perception of historical trends, current conditions and expected future developments, as well as other factors believed to be appropriate in the circumstances. However, whether actual results and developments will conform with its expectations and predictions is subject to a number of risks and uncertainties that could cause actual results to differ materially from expectations, including:

        ·                 the risks discussed in Item 1A of this Form 10-K;

        ·claims arising from catastrophic events, such as hurricanes, earthquakes, floods or terrorist attacks;

        the continued availability of capital and financing;

        ·general economic, market or business conditions;

        ·business opportunities (or lack thereof) that may be presented to it and pursued;

        ·competitive forces, including the conduct of other property and casualty insurers and reinsurers;

        ·changes in domestic or foreign laws or regulations, or their interpretation, applicable to White Mountains, its competitors or its clients;

        ·an economic downturn or other economic conditions adversely affecting its financial position;

        recorded loss reserves established subsequently proving to have been inadequate; and

        ·other factors, most of which are beyond White Mountains'Mountains’ control.

      Consequently, all of the forward-looking statements made in this report are qualified by these cautionary statements, and there can be no assurance that the actual results or developments anticipated by White Mountains will be realized or, even if substantially realized, that they will have the expected consequences to, or effects on, White Mountains or its business or operations. White Mountains assumes no obligation to update publicly any such forward-looking statements, whether as a result of new information, future events or otherwise.




      Item 7A. Quantitative and Qualitative Disclosures About Market Risk

      White Mountains'Mountains’ consolidated balance sheet includes a substantial amount of assets and liabilities whose fair values are subject to market risk. The term market risk refers to the risk of loss arising from adverse changes in interest rates and other relevant market rates and prices. Due to White Mountains'Mountains’ sizable balances of interest rate sensitive instruments, market risk can have a significant effect on White Mountains'Mountains’ consolidated financial position.



      Interest Rate Risk

      Fixed Maturity Portfolio.In connection with the Company'sCompany’s consolidated insurance and reinsurance subsidiaries, White Mountains invests in interest rate sensitive securities, primarily debt securities. White Mountains'Mountains strategy is to purchase fixed maturity investments that are attractively priced in relation to perceived credit risks. White Mountains'Mountains’ fixed maturity investments are held as available for sale in accordance with SFAS No. 115, "Accounting“Accounting for Certain Investments in Debt and Equity Securities" ("Securities” (“SFAS 115"115”), whereby these investments are carried at fair value on the balance sheet with net unrealized gains or losses reported net of tax in a separate component of common shareholders'shareholders’ equity. White Mountains generally manages its interest rate risk associated with its portfolio of fixed maturity investments by monitoring the average duration of the portfolio, which allows White Mountains to achieve an adequate yield without subjecting the portfolio to an unreasonable level of interest rate risk. White Mountains'Mountains’ fixed maturity portfolio is comprised of primarily investment grade corporate securities, U.S. government and agency securities, municipal obligations and mortgage-backed securities (e.g., those receiving an investment grade rating from S&PStandard & Poor’s or Moody's)Moody’s).

      Increases and decreases in prevailing interest rates generally translate into decreases and increases in fair values of fixed maturity investments, respectively. Additionally, fair values of interest rate sensitive instruments may be affected by the credit worthinesscreditworthiness of the issuer, prepayment options, relative values of alternative investments, the liquidity of the instrument and other general market conditions.

      The table below summarizes the estimated effects of hypothetical increases and decreases in market interest rates on White Mountains'Mountains’ fixed maturity portfolio and fixed maturity investments in the pension plan.

      $ in millions

       Fair Value at
      December 31,
      2004

       Assumed Change in
      Relevant Interest Rate

       Estimated Fair Value
      After Change in
      Interest Rate

       After-Tax Increase
      (Decrease) in Carrying
      Value

       

      ($ in millions)

       

      Fair Value at
      December 31, 2006

       

      Assumed Change in
      Relevant Interest
      Rate

       

      Estimated Fair Value
      After Change in
      Interest Rate

       

      After-Tax Increase
      (Decrease) in
      Carrying Value

       

      Fixed maturity investments $7,900.0 100 bp decrease $8,110.6 $142.8 

       

      $

      7,911.5

       

      100 bp decrease

       

      $

      8,058.7

       

      $

      98.0

       

          50 bp decrease 8,005.8 71.7 

       

       

       

      50 bp decrease

       

      7,988.2

       

      51.1

       

          50 bp increase 7,795.8 (70.7)

       

       

       

      50 bp increase

       

      7,837.6

       

      (49.2

      )

          100 bp increase 7,706.0 (132.1)

       

       

       

      100 bp increase

       

      7,759.6

       

      (101.1

      )

      Pension fixed maturity investments $259.4 100 bp decrease $267.5 $5.3 

       

      $

      285.1

       

      100 bp decrease

       

      $

      293.6

       

      $

      5.6

       

          50 bp decrease 263.5 2.7 

       

       

       

      50 bp decrease

       

      289.3

       

      2.8

       

          50 bp increase 255.3 (2.7)

       

       

       

      50 bp increase

       

      280.8

       

      (2.8

      )

          100 bp increase 251.2 (5.3)

       

       

       

      100 bp increase

       

      276.5

       

      (5.5

      )

      Long-term obligations.As of December 31, 2004,2006, White Mountains'Mountains’ interest and dividend bearing long-term obligations consisted primarily of the Senior Notes, and the Berkshire Preferred Stock and the Zenith Preferred Stock obligations, which have fixed interest and dividend rates. As a result, White MountainsMountains’ exposure to interest rate risk resulting from variable interest rate obligations is insignificant.limited to the $320 million that it had drawn under the WTM Bank Facility as of December 31, 2006.

      The Senior Notes were issued in 2003 and mature on May 15, 2013. At December 31, 2004,December31, 2006, the fair value of White Mountains'the Senior Notes was approximately $714$693 million, which compared to a carrying value of $698$699 million.



      The Berkshire Preferred Stock and Zenith Preferred Stock obligations were issued in 2001 and mature on May 31, 2008 and May 31, 2011, respectively. At the Company's option, the Zenith Preferred Stock may be redeemed on June 30, 2007. At December 31, 2004,2006, the fair values of the Berkshire Preferred Stock and Zenith Preferred Stock obligations were approximately $341$320 million and $23$21 million, respectively, which compared to carrying values of $192$242 million and $20 million, respectively.

      The fair values of these obligations were estimated by discounting future cash flows using current market rates for similar obligations or using quoted market prices.



      Equity Price Risk

      The carrying values of White Mountains'Mountains’ common equity securities and its other investments are based on quoted market prices or management'smanagement’s estimates of fair value (which is based, in part, on quoted market prices) as of the balance sheet date. Market prices of common equity securities, in general, are subject to fluctuations which could cause the amount to be realized upon sale or exercise of the instruments to differ significantly from the current reported value. The fluctuations may result from perceived changes in the underlying economic characteristics of the investee, the relative price of alternative investments, general market conditions and supply and demand imbalances for a particular security.


      Foreign Currency Exchange Rates
      Risk

      White Mountains'Mountains’ foreign assets and liabilities are valued using period-end exchange rates and its foreign revenues and expenses are valued using average exchange rates. Foreign currency exchange rate risk is the risk that White Mountains will incur losses on a U.S. Dollardollar basis due to adverse changes in foreign currency exchange rates.

      At December 31, 2004,2006, OneBeacon held approximately $384$259 million in bonds denominated in foreign currencies, mostly those denominated in British Pounds.Pounds and Australian dollars. Assuming a hypothetical 10% increase or decrease in the rate of exchange from the British Pound and Australian dollar to the U.S. Dollardollar as of December 31, 2004,2006, the carrying value of OneBeacon'sOneBeacon’s foreign currency-denominated bond portfolio would have respectively decreased or increased by approximately $37$26 million.

              As a result of the Sirius Acquisition during 2004, White Mountains has a higher concentration of assets, liabilities, revenues and expenses denominated in foreign currencies than in prior periods. The functional currency of Sirius International is the Swedish Krona. Assuming a hypothetical 10% increase or decrease in the rate of exchange from the Swedish Krona to the U.S. Dollardollar as of December 31, 2004,2006, the carrying value of White Mountains'Mountains’ net assets denominated in Swedish Kronor would have respectively decreased or increased by approximately $40$58 million.

      Weather Derivative Risk

      Weather derivatives, which can be structured as either swaps or options, are typically purchased by corporations and governments exposed to volatility in earnings due to variable weather. Weather derivatives are products with financial settlements linked to an underlying index that measures a quantifiable weather element such as temperature, precipitation, snowfall and windspeed, typically over the course of a six-month summer or winter season. Galileo manages its exposure to weather and market risks based on guidelines established by senior management. Galileo manages its weather portfolio through the employment of a variety of strategies. These strategies include geographical diversification of risk exposures and economic hedging within the over-the-counter and exchange traded derivative markets. Additionally, Galileo economically hedges its risk exposure by buying and selling similar weather risk contracts with different counterparties. For example, Galileo may sell an option to protect a customer if it becomes too cold in a certain location and then purchase an option from another counterparty that pays Galileo if it becomes too cold in that same location. Galileo also diversifies its risk exposure by entering into contracts that protect different clients with opposite exposures to the same quantifiable weather element. For example, Galileo may sell an option to protect a customer if it becomes too cold in a certain location and then sell another option that protects a different customer if it becomes too warm in that same location. Risk management is undertaken on a product portfolio-wide basis, to maintain a portfolio that Galileo believes is well diversified and that remains within the aggregate risk tolerance established by senior management.

      Galileo uses value-at-risk (“VaR”) analysis to monitor the risks associated with its weather derivative contracts. VaR is a tool that measures the potential loss that could occur over a defined period of time, calculated at a given statistical confidence level. Galileo’s portfolio VaR analyses are calculated using a Monte Carlo simulation model that uses historical weather data, actual weather data since each contract’s inception, forecasted weather conditions and prevailing market rates as inputs. Galileo performs a VaR analysis for each of its portfolios using both a seasonal and 20-day holding period. The average, low and high of amounts produced by Galileo’s 20 day VaR analyses performed during the period ended December 31, 2006, calculated at a 99% confidence level, were approximately $3 million, zero, and $8 million, respectively. White Mountains did not offer weather risk management products prior to 2006.


      Variable Annuity Guarantee Risk

      White Mountains entered into an agreement to reinsure death and living benefit guarantees associated with certain variable annuities issued in Japan, commencing September 1, 2006. The reinsurance agreement assumes risk related to a shortfall between the account value and the guaranteed value that must be paid by the ceding company to an annuitant or to an annuitant’s beneficiary in accordance with the underlying annuity contracts. Generally, the liabilities associated with these guarantees increase with declines in the equity markets, interest rates and currencies against the Japanese Yen, as well as with increases in market volatilities. The liability is also affected by annuitant-related actuarial assumptions, including surrender and mortality rates. At December 31, 2006, the total liability for the reinsured variable annuity guarantees was $(14) million.

      White Mountains purchases derivative instruments, including futures and over-the counter option contracts on interest rates, major equity indices, and foreign currencies, to mitigate the risks associated with changes in the fair value of the reinsured variable annuity guarantees. At December 31, 2006, the fair value of these derivative instruments was $21 million and had an inception to date loss of $16 million.

      White Mountains measures its net exposure to changes in relevant interest rates, foreign exchange rates and equity markets on a daily basis and adjusts its economic hedge positions within risk guidelines established by senior management. At December 31, 2006, White Mountains’ modeled net exposure to a 10% change in each of these factors were as follows:

       

       

      ($ in millions)

       

       

       

       

       

       

       

      Foreign Exchange Rates

       

      Change

       

      Equity Markets

       

      Interest Rates

       

      Against the Japanese Yen

       

      + 10 Percent

       

      $

      .3

       

      $

      .4

       

      $

      (1.5

      )

      -10 Percent

       

      (1.8

      )

      (.3

      )

      (4.4

      )

      White Mountains also monitors the effects of annuitant-related experience against actuarial assumptions (including surrender and mortality rates) on a weekly basis and adjusts relevant assumptions and economic hedge positions if required. While White Mountains actively manages its economic hedge positions, several factors, including policyholder behavior and mismatches between underlying variable annuity funds and the hedge indices, may result in economic hedge ineffectiveness.


      Item 8.          Financial Statements and Supplementary Data

      The financial statements and supplementary data have been filed as a part of this Annual Report on Form 10-K as indicated in the Index to Consolidated Financial Statements and Financial Statement Schedules appearing on page 8897 of this report.


      Item 9.Changes in and Disagreements withWith Accountants on Accounting and Financial Disclosure

      None.

              None.


      Item 9A.       Controls and Procedures

      The Principal Executive Officer ("PEO"(“PEO”) and the Principal Financial Officer ("PFO"(“PFO”) of White Mountains have evaluated the effectiveness of its disclosure controls and procedures (as defined in Rule 13a-15(e)13a-1 5(e) of the Exchange Act) as of December 31, 2004.2006. Based on that evaluation, the PEO and



      PFO have concluded that White Mountains'Mountains’ disclosure controls and procedures are adequate and effective.

      The PEO and the PFO of White Mountains have evaluated the effectiveness of its internal control over financial reporting as of December 31, 2004.2006. Based on that evaluation, the PEO and PFO have concluded that White Mountains'Mountains’ internal control over financial reporting is effective. Management'sManagement’s annual report on internal control over financial reporting is included on page F-71F-97 of this report. The attestation report on management'smanagement’s assessment of its internal control over financial reporting by PricewaterhouseCoopers LLP is containedincluded on page F-72pages F-94 through F-95 of this report.


      There havehas been no significant changeschange in White Mountains'Mountains’ internal controls over financial reporting that occurred during the fourth quarter of 2006 that has materially affected, or in factors that could significantlyis reasonably likely to materially affect White Mountains’ internal controls, subsequent to their most recent evaluation of such controls.control over financial reporting.


      Item 9B. Other Information

      None.


      PART III

      Item 10. Directors, and Executive Officers
      and Corporate Governance

        a.
        Directors

      Reported under the caption "Electioncaptions “The Board Of Directors”, “Section 16(a) Beneficial Ownership Reporting Compliance” and “Corporate Governance - Committees of the Company's Directors" ofBoard - Audit Committee” in the Company's 2005Company’s 2007 Proxy Statement, herein incorporated by reference.

        b.
        Executivereference, and under the caption “Executive Officers

              Reported of the Registrant” in Part I pursuant to General Instruction G toof this Annual Report on Form 10-K.

        c.

        Audit Committee Financial Expert

              Reported under the caption "Committees of the Board—Audit Committee" of the Company's 2005 Proxy Statement, herein incorporated by reference.

        d.
        Code of Business Conduct and Ethics

      The Company'sCompany’s Code of Business Conduct, which applies to all directors, officers and employees in carrying out their responsibilities to and on behalf of the Company, has been filed hereinis available at www.whitemountains.com and is included as Exhibit 14.

        e.
        Compliance with Section 16(a)14 to the Company’s 2004 Annual Report on Form 10-K. The Company’s Code of Business Conduct is also available in print free of charge to any shareholder upon request.

        There have been no material changes to the Exchange Act

              Reportedprocedures by which shareholders may recommend nominees to the Company’s Board of Directors. The procedures for shareholders to nominate directors are reported under the caption "Compliance with Section 16(a)“Corporate Governance - Committees of the Exchange Act" ofBoard - Nominating and Governance Committee” in the Company's 2005Company’s 2007 Proxy Statement, herein incorporated by reference.


      Item 11. Executive Compensation

      Reported under the captions "Compensation of Executive Officers", "Reports of“Executive Compensation” and “Corporate Governance - Compensation Committee Interlocks and Insider Participation” in the Committee on Executive Compensation", "Member Return Graph" and "Compensation Plans" of the Company's 2005Company’s 2007 Proxy Statement, herein incorporated by reference.


      Item 12. Security Ownership of Certain Beneficial Owners and Management
      and Related Stockholder Matters

      Reported under the caption "Votingcaptions “Voting Securities and Principal Holders Thereof" ofThereof” and “Equity Compensation Plan Information” in the Company's 2005Company’s 2007 Proxy Statement, herein incorporated by reference.



      Item 13. Certain Relationships, and Related Transactions
      and Director Independence

      Reported under the captions "Other Compensation Arrangements", "Certain Relationshipscaption “Transactions with Related Persons, Promoters and Related Transactions"Certain Control Persons” and "Compensation Committee Interlocks and Insider Participation“Corporate Governance - Director Independence” in Compensation Decisions" of the Company's 2005Company’s 2007 Proxy Statement, herein incorporated by reference.


      Item 14. Principal Accountant Fees and Services

      Reported under the caption "Independent Registered Public“Principal Accountant Fees and Services" ofServices” in the Company's 2005Company’s 2007 Proxy Statement, herein incorporated by reference.



      PART IV

      Item 15. Exhibits and Financial Statement Schedules and Reports on Form 8-K

        a.

        Documents Filed as Part of the Report

      The financial statements and financial statement schedules and reports of independent auditors have been filed as part of this Annual Report on Form 10-K as indicated in the Index to Consolidated Financial Statements and Financial Statement Schedules appearing on page 8897 of this report. A listing of exhibits filed as part of the report appear on pages 8394 through 8595 of this report.

        93




      b.

      Exhibits

      Exhibit
      number

      Exhibit number


      Name


      2

      Plan of Reorganization (incorporated by reference herein to the Company'sCompanys Registration Statement on S-4 (No. 333-87649) dated September 23, 1999)


      3.1



      Memorandum of Continuance of the Company (incorporated by reference herein to Exhibit (3)(I) of the Company's Registration StatementCompanys Current Report on S-4 (No. 333-87649)Form 8-K dated September 23,November 1, 1999)


      3.2



      Bye-Laws of the Company (incorporated by reference herein to Annex III of the Company'sCompanys Registration Statement on Form S-4 (No. 333-87649) dated September 23, 1999)


      4



      Amended and Restated Certificate of Designation of Series A Preferred Stock of Fund American (incorporated by reference herein to Exhibit 99.1 of the Company'sCompanys Report on Form 8-K dated December 3, 2004)


      10.1



      Amendment Agreement dated as of November 30, 2004, between General Reinsurance Corporation, a Delaware corporation, the Company and Fund American (incorporated by reference herein to Exhibit 99.2 of the Company'sCompanys Report on Form 8-K dated December 3, 2004)


      10.2



      Keep-Well Agreement, dated as of November 30, 2004, by and between the Company and Fund American (incorporated by reference herein to Exhibit 99.3 of the Company'sCompanys Report on Form 8-K dated December 3, 2004)


      10.3



      Stock Purchase

      $500,000,000 Credit Agreement, bydated November14, 2006 among the Company and among Safeco Corporation, GeneralWhite Mountains Re Group, Ltd., as the Borrowers, Bank of America, Corporation, The Company, Occum Acquisition Corp. datedN.A., as of March 31, 2004 (incorporated by reference herein to Exhibit 10 ofAdministrative Agent, Swing Line Lender and Issuing Lender, and the Company's Report on Form 8-K dated March 15, 2004)other lenders party hereto. (*)


      10.4



      $400,000,00075,000,000 Credit Agreement, dated as of August 26, 2004,November14, 2006 among the Company and Fund American as the borrowers, the several lenders from time to time parties hereto, JP Morgan Chase Bank,Borrower, OneBeacon Insurance Group, Ltd., as Syndication Agent, andParent, Bank of America, NAN.A., as Administrative Agent. (incorporated by reference herein to Exhibit 10 ofAgent, Swing Line Lender and Issuing Lender, and the Company's Report on Form 10-Q dated November 2, 2004)other lenders party hereto. (*)

      10.5




      10.5


      Adverse Development Agreement of Reinsurance No. 8888 between Potomac Insurance Company and GRC dated April 13, 2001 (incorporated by reference herein to Exhibit 99(m) of the Company'sCompanys Report on Form 8-K dated June 1, 2001)1,2001)


      10.6



      Adverse Development Agreement of Reinsurance between NICO (and certain of its affiliates) and Potomac Insurance Company dated April 13, 2001 and related documents (incorporated by reference herein to Exhibits 99(n), 99(o), 99(p) and 99(q) of the Company'sCompanys Report on Form 8-K dated June 1, 2001)


      10.7



      Purchase Agreement between ABB Holding AG, as Seller, and Fund American Holdings AB, as Purchaser, dated December 8, 2003 (incorporated by reference herein to Exhibit 99(a) of the Company's Report on Form 8-K dated December 8, 2003)

      10.8


      Subscription Agreement among Berkshire, Fund American and the Registrant dated May 30, 2001 (incorporated by reference herein to Exhibits 99(t) of the Company'sCompanys Report on Form 8-K dated June 1, 2001)


      10.9

      10.8



      Master Agreement by and among the Company, OneBeacon and Liberty Mutual including the Liberty RRA and related documents (incorporated by reference herein to Exhibits 99(d), 99(e), 99(f), 99(g) and 99(h) of the Company'sCompanys Report on Form 8-K dated November 1, 2001)


      10.10

      10.9



      Folksamerica Holding Company, Inc. Long-Term Incentive Plan—2003

      Investment Management Agreement between Prospector Partners, LLC and Prior (*)


      10.11


      White Mountains Re Group, Ltd. Long-Term Incentive Unit Plan (*)

      10.12


      Folksamerica Holding Company, Inc. White Mountains Performance Share PlanAdvisors LLC (incorporated by reference herein to Exhibit 10(s)99.1 of the Company's 2002 AnnualCompanys Report on Form 10-K)8-K dated June 20, 2005)


      10.13

      10.10



      Amendment to the Investment Management Agreement between Prospector Partners, LLC and White Mountains Re Group Ltd./Folksamerica 2004 Bonus Plan (*)Advisors, LLC dated February 23, 2006 (incorporated by reference herein to the Companys Report on Form 8-K dated February 28, 2006)


      10.14

      10.11



      Investment Management Agreement between Prospector Partners, LLC and OneBeacon dated November14, 2006 (*)

      10.12

      Consulting Letter Agreement between Prospector Partners, LLC and White Mountains Advisors LLC (incorporated by reference herein to Exhibit 99.2 of the Companys Report on Form 8-K dated June 20, 2005)

      10.13

      Folksamerica Holding Company, Inc. Voluntary Deferred Compensation Plan (*)(incorporated by reference herein to Exhibit 10.14 of the Companys 2004 Annual Report on Form 10-K)


      10.15

      10.14



      Folksamerica Holding Company, Inc. Deferred Benefit Plan (*)(incorporated by reference herein to Exhibit 10.15 of the Companys 2004 Annual Report on Form 10-K)


      10.16

      10.15



      White Mountains Long-Term Incentive Plan as amended, (incorporated by reference to Appendix I of the Company's Notice of 2003 Annual General Meeting of Shareholders and Proxy Statement dated April 7, 2003)(*)


      10.17

      10.16



      White Mountains Bonus Plan (*)(incorporated by reference herein to Exhibit 10.17 of the Companys 2004 Annual Report on Form 10-K)


      10.18

      10.17



      The Company'sCompanys Voluntary Deferred Compensation Plan (incorporated by reference herein to Exhibit 4(c) of the Company'sCompanys Report on Form S-8 dated October 19, 1999)


      10.19

      10.18



      White Mountains Insurance Group Deferred Compensation Plan (incorporated by reference herein to Exhibit 10.14 of the Company'sCompanys 2003 Annual Report on Form 10-K)


      10.20

      10.19



      Fund American Deferred Compensation Plan (incorporated by reference herein to Exhibit 10.15 of the Company'sCompanys 2003 Annual Report on Form 10-K)



      10.21

      10.20



      OneBeacon Insurance Performance Unit Plan (incorporated by reference herein to Exhibit 10.16 of the Company's 2003 Annual Report on Form 10-K)(*)


      10.22

      10.21



      OneBeacon Insurance Supplemental Plan (incorporated by reference herein to Exhibit 4(c) of the Company's Report on Form S-8 dated August 27, 2001)


      10.23


      OneBeacon's 20042006 Management Incentive Plan (*)

      10.22



      10.24


      OneBeacon Insurance Deferred Compensation Plan (incorporated by reference herein to Exhibit 10.18 of the Company'sCompanys 2003 Annual Report on Form 10-K)


      10.25

      10.23



      Employment Agreement dated January 1, 2001 among John D. Gillespie and Fund American Companies, Inc. (incorporated by reference herein to Exhibit 10(y) of the Company's 2001 Annual Report on Form 10-K)

      OneBeacon Phantom WTM Share Plan (*)


      10.26

      10.24



      OneBeacon Long-Term Incentive Plan (*)

      10.25

      OneBeacon Insurance Group, Ltd. Non-Qualified Stock Option Agreement for T. Michael Miller (*)

      10.26

      Amended and Restated Revenue Sharing Agreement among John D. Gillespie, Fund American Companies, Inc. and Folksamerica Reinsurance Company (*)(incorporated by reference herein to Exhibit 10.26 of the Companys 2004 Annual Report on Form 10-K)


      11



      Statement Re Computation of Per Share Earnings (**)


      12



      Statement Re Computation of Ratio of Earnings to Fixed Charges (*)


      14



      The Company'sCompanys Code of Business Conduct, which applies to all directors, officers and employees in carrying out their responsibilities to and on behalf of the Company (*)(incorporated by reference herein to Exhibit 14 of the Companys 2004 Annual Report on Form 10-K)


      21



      Subsidiaries of the Registrant (*)


      23



      Consent of PricewaterhouseCoopers LLP dated March 1, 2005February 28, 2007 (*)


      24



      Powers of Attorney (*)


      31.1



      Principal Executive Officer Certification Pursuant to Rule 13a-14 (a) of the Securities Exchange Act of 1934 (*)


      31.2



      Principal Financial Officer Certification Pursuant to Rule 13a-14 (a) of the Securities Exchange Act of 1934 (*)


      32.1



      Principal Executive Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (*)


      32.2



      Principal Financial Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (*)


      99



      Text entitled "Non-AsbestosNon-Asbestos and Environmental Reserves"Reserves under the caption "LossLoss and Loss Adjustment Expense Reserves"Reserves (incorporated by reference herein to pages 31 through 43 of the Company'sCompanys Form S-3 dated March 14, 2003)


      (*)

      Included herein.

      (**)

      Not included herein as the information is contained elsewhere within report. See Note 1 of the Notes to Consolidated Financial Statements.

      c.

      Financial Statement Schedules

      The financial statement schedules and report of independent registered public accounting firm have been filed as part of this Annual Report on Form 10-K as indicated in the Index to Consolidated Financial Statements and Financial Statement Schedules appearing on page 8897 of this report.

      95





      SIGNATURES


      SIGNATURES

      Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.




      WHITE MOUNTAINS INSURANCE GROUP, LTD.



      Date: March 2, 2005February 28, 2007



      By:



      By:


      /s/ J. BRIAN PALMER


      Chief Accounting Officer

      Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Company and in the capacities and on the dates indicated.

      Signature


      Title


      Date







      /s/ RAYMOND BARRETTE


      Raymond Barrette

      Director, President

      Chairman and CEO (Principal Executive Officer)

      March 2, 2005

      February 28, 2007


      /s/  

      Raymond Barrette

      (Principal Executive Officer)

      BRUCE R. BERKOWITZ*      BERKOWITZ


      *

      Director

      February 28, 2007

      Bruce R. Berkowitz



      Director



      March 2, 2005


      /s/  
      JOHN J. BYRNE*      
      John J. Byrne


      Director


      March 2, 2005

      /s/  

      HOWARD L. CLARK, JR.*


      Director

      February 28, 2007

      Howard L. Clark, Jr.



      Director



      March 2, 2005


      /s/  

      ROBERT P. COCHRAN*      COCHRAN


      *

      Director

      February 28, 2007

      Robert P. Cochran



      Director



      March 2, 2005


      /s/  MORGAN W. DAVIS
      *

      Director

      February 28, 2007

      Morgan W. Davis

      STEVEN E. FASS*


      Director

      February 28, 2007

      Steven E. Fass



      Director



      March 2, 2005


      A. MICHAEL FRINQUELLI
      *

      Director

      February 28, 2007

      A. Michael Frinquelli

      /s/ DAVID T. FOY


      David T. Foy



      Executive Vice President and CFO (Principal

      February 28, 2007

      David T. Foy

      (Principal Financial Officer)



      March 2, 2005



      /s/  

      GEORGE J. GILLESPIE, III*


      Director

      February 28, 2007

      George J. Gillespie, III



      Chairman



      March 2, 2005


      /s/  

      JOHN D. GILLESPIE*


      Director

      February 28, 2007

      John D. Gillespie



      Director



      March 2, 2005


      /s/  

      EDITH E. HOLIDAY*      HOLIDAY


      *

      Director

      February 28, 2007

      Edith E. Holiday



      Director



      March 2, 2005


      /s/ FRANK A. OLSON*      


      Frank A. Olson


      Director


      March 2, 2005

      /s/  
      J. BRIAN PALMER

      Chief Accounting Officer

      February 28, 2007

      J. Brian Palmer



      Chief Accounting Officer (Principal

      (Principal Accounting Officer)



      March 2, 2005


      /s/  

      LOWNDES A. SMITH*


      Director

      February 28, 2007

      Lowndes A. Smith



      Director



      March 2, 2005


      /s/  
      JOSEPH S. STEINBERG*      
      Joseph S. Steinberg

      ALLAN L. WATERS*



      Director



      March 2, 2005

      February 28, 2007


      Allan L. Waters

      *By:

      /s/ ARTHUR ZANKEL*      


      Arthur ZankelRAYMOND BARRETTE



      Director

      Raymond Barrette, Attorney-in-Fact



      March 2, 2005


      *By:


      /s/  
      RAYMOND BARRETTE

      Raymond Barrette,Attorney-in-Fact





      96








      CONSOLIDATED BALANCE SHEETS



       December 31,
       

       

      December 31,

       

      in millions, except share amounts

       
      2004
       2003
       

      (Millions, except share and per share amounts)

       

      2006

       

      2005

       

      AssetsAssets     

       

       

       

       

       

      Fixed maturity investments, at fair value (cost $7,684.1 and $6,010.2) $7,900.0 $6,248.1 

      Fixed maturity investments, at fair value (amortized cost $7,812.9 and $7,548.4)

       

      $

      7,911.5

       

      $

      7,582.7

       

      Common equity securities, at fair value (cost $972.0 and $796.5)

       

      1,212.6

       

      967.8

       

      Short-term investments, at amortized cost (which approximates fair value)Short-term investments, at amortized cost (which approximates fair value) 1,058.2 1,546.6 

       

      1,344.9

       

      727.8

       

      Common equity securities, at fair value (cost $775.9 and $396.2) 1,043.9 513.6 
      Other investments (cost $442.7 and $184.0) 527.4 239.2 
       
       
       
       Total investments 10,529.5 8,547.5 

      Other investments (cost $467.1 and $510.8)

       

      524.8

       

      588.1

       

      Trust account investments, at amortized cost (fair value $337.9 and $0)

       

      338.9

       

       

      Total investments

       

      11,332.7

       

      9,866.4

       

      CashCash 243.1 89.9 

       

      159.0

       

      187.7

       

      Reinsurance recoverable on unpaid lossesReinsurance recoverable on unpaid losses 2,036.2 1,629.0 

       

      2,134.5

       

      3,003.6

       

      Reinsurance recoverable on unpaid losses—Berkshire Hathaway Inc. 1,761.2 1,844.8 

      Reinsurance recoverable on unpaid losses - Berkshire Hathaway Inc.

       

      1,881.2

       

      2,022.1

       

      Reinsurance recoverable on paid lossesReinsurance recoverable on paid losses 92.0 121.7 

       

      159.4

       

      77.0

       

      Insurance and reinsurance premiums receivable

       

      913.6

       

      1,014.3

       

      Securities lending collateral

       

      649.8

       

      674.9

       

      Funds held by ceding companiesFunds held by ceding companies 943.8 144.1 

       

      452.8

       

      620.4

       

      Securities lending collateral 593.3 911.0 

      Investments in unconsolidated insurance affiliates

       

      335.5

       

      479.7

       

      Deferred acquisition costs

       

      320.3

       

      288.4

       

      Deferred tax asset

       

      276.0

       

      341.2

       

      Ceded unearned premiums

       

      87.9

       

      200.7

       

      Accrued investment income

       

      87.4

       

      93.5

       

      Accounts receivable on unsettled investment salesAccounts receivable on unsettled investment sales 19.9 9.1 

       

      8.5

       

      21.7

       

      Insurance and reinsurance premiums receivable 942.2 779.0 
      Investments in unconsolidated insurance affiliates 466.6 515.9 
      Deferred tax asset 271.5 260.0 
      Deferred acquisition costs 308.2 233.6 
      Ceded unearned premiums 224.1 185.3 
      Investment income accrued 102.4 73.0 
      Other assetsOther assets 481.1 538.1 

       

      645.1

       

      526.5

       

       
       
       
      Total assets $19,015.1 $15,882.0 
       
       
       

      Total assets

       

      $

      19,443.7

       

      $

      19,418.1

       

      LiabilitiesLiabilities     

       

       

       

       

       

      Loss and loss adjustment expense reservesLoss and loss adjustment expense reserves $9,398.5 $7,728.2 

       

      $

      8,777.2

       

      $

      10,231.2

       

      Unearned insurance and reinsurance premiums

       

      1,584.9

       

      1,582.0

       

      Debt

       

      1,106.7

       

      779.1

       

      Securities lending payable

       

      649.8

       

      674.9

       

      Deferred tax liability

       

      311.5

       

      274.3

       

      Long-term incentive compensation payable

       

      285.2

       

      240.2

       

      Reserves for structured contractsReserves for structured contracts 375.9  

       

      147.1

       

      224.6

       

      Unearned insurance and reinsurance premiums 1,739.4 1,409.4 
      Securities lending payable 593.3 911.0 
      Debt 783.3 743.0 
      Deferred tax liability 316.3 .4 

      Funds held under reinsurance treaties

       

      141.6

       

      171.4

       

      Ceded reinsurance payableCeded reinsurance payable 201.4 158.3 

       

      138.4

       

      204.5

       

      Accounts payable on unsettled investment purchasesAccounts payable on unsettled investment purchases 30.9 371.6 

       

      66.8

       

      43.4

       

      Funds held under reinsurance treaties 155.4 211.9 
      Other liabilitiesOther liabilities 1,324.9 1,174.5 

       

      913.7

       

      828.9

       

      Preferred stock subject to mandatory redemption:Preferred stock subject to mandatory redemption:     

       

       

       

       

       

      Held by Berkshire Hathaway Inc. (redemption value $300.0)

       

      242.3

       

      214.0

       

      Held by others (redemption value $20.0)

       

      20.0

       

      20.0

       

      Total liabilities

       

      14,385.2

       

      15,488.5

       

      Held by Berkshire Hathaway Inc. (redemption value $300.0) 191.9 174.5 

       

       

       

       

       

      Minority interest- OneBeacon Insurance Group, Ltd.

       

      490.7

       

       

      Minority interest- consolidated limited partnerships

       

      112.5

       

      96.4

       

      Total minority interest

       

      603.2

       

      96.4

       

      Held by others (redemption value $20.0) 20.0 20.0 

       

       

       

       

       

       
       
       
       Total liabilities 15,131.2 12,902.8 
      Common shareholders' equity     
      Common Shares at $1 par per share—authorized 50,000,000 Shares; issued and outstanding 10,772,789 and 9,007,195 Shares 10.8 9.0 

      Common shareholders’ equity

       

       

       

       

       

      Common shares at $1 par value per share — authorized 50,000,000 shares; issued and outstanding 10,782,753 and 10,779,223 shares

       

      10.8

       

      10.8

       

      Paid-in surplusPaid-in surplus 1,719.2 1,399.6 

       

      1,716.7

       

      1,716.4

       

      Unearned compensation - restricted common share awards

       

       

      (1.9

      )

      Retained earningsRetained earnings 1,695.9 1,286.4 

       

      2,496.0

       

      1,899.8

       

      Accumulated other comprehensive income, after-tax:Accumulated other comprehensive income, after-tax:     

       

       

       

       

       

      Unrealized gains on investments 416.1 286.0 
      Unrealized foreign currency translation gains (losses) 48.5 (.3)
      Minimum pension liability (2.4)  
      Unearned compensation—restricted Common Share awards (4.2) (1.5)
       
       
       
       Total common shareholders' equity 3,883.9 2,979.2 
       
       
       
       Total liabilities and common shareholders' equity $19,015.1 $15,882.0 
       
       
       

      Net unrealized gains on investments

       

      194.0

       

      233.9

       

      Net unrealized foreign currency translation gains (losses)

       

      37.2

       

      (21.8

      )

      Other

       

      0.6

       

      (4.0

      )

      Total common shareholders’ equity

       

      4,455.3

       

      3,833.2

       

      Total liabilities, minority interest and common shareholders’ equity

       

      $

      19,443.7

       

      $

      19,418.1

       

      See Notes to Consolidated Financial Statements including Note 18 for Commitments and Contingencies.



      CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME

       

       

      Year Ended December 31,

       

      Millions, except per share amounts

       

      2006

       

      2005

       

      2004

       

      Revenues

       

       

       

       

       

       

       

      Earned insurance and reinsurance premiums

       

      $

      3,712.7

       

      $

      3,798.6

       

      $

      3,820.5

       

      Net investment income

       

      435.5

       

      491.5

       

      360.9

       

      Net realized investment gains

       

      272.7

       

      112.6

       

      181.1

       

      Gain on sale of shares of OneBeacon Insurance Group, Ltd.

       

      171.3

       

       

       

      Other revenue

       

      202.0

       

      229.2

       

      192.8

       

      Total revenues

       

      4,794.2

       

      4,631.9

       

      4,555.3

       

      Expenses

       

       

       

       

       

       

       

      Loss and loss adjustment expenses

       

      2,452.7

       

      2,858.2

       

      2,591.1

       

      Insurance and reinsurance acquisition expenses

       

      754.8

       

      761.2

       

      744.4

       

      Other underwriting expenses

       

      505.4

       

      424.7

       

      520.4

       

      General and administrative expenses

       

      218.3

       

      148.8

       

      301.0

       

      Accretion of fair value adjustment to loss and loss adjustment expense reserves

       

      24.5

       

      36.9

       

      43.3

       

      Interest expense on debt

       

      50.1

       

      44.5

       

      49.1

       

      Interest expense - dividends on preferred stock subject to mandatory redemption

       

      30.3

       

      30.3

       

      30.3

       

      Interest expense - accretion on preferred stock subject to mandatory redemption

       

      28.3

       

      22.1

       

      17.3

       

      Total expenses

       

      4,064.4

       

      4,326.7

       

      4,296.9

       

      Pre-tax income

       

      729.8

       

      305.2

       

      258.4

       

      Income tax provision

       

      (98.9

      )

      (36.5

      )

      (47.0

      )

      Income before minority interest, equity in earnings of unconsolidated affiliates and extraordinary item

       

      630.9

       

      268.7

       

      211.4

       

      Minority interest

       

      (16.0

      )

      (12.2

      )

      (10.6

      )

      Equity in earnings of unconsolidated affiliates

       

      36.9

       

      33.6

       

      37.4

       

      Income before extraordinary item

       

      651.8

       

      290.1

       

      238.2

       

      Excess of fair value of acquired net assets over cost

       

      21.4

       

       

      180.5

       

      Net income

       

      673.2

       

      290.1

       

      418.7

       

      Change in net unrealized gains and losses for investments held

       

      125.3

       

      (50.8

      )

      218.0

       

      Recognition of net unrealized gains and losses for investments sold

       

      (156.0

      )

      (131.4

      )

      (87.9

      )

      Change in foreign currency translation

       

      59.0

       

      (70.3

      )

      48.8

       

      Net change in minimum pension liability and other

       

      4.6

       

      (1.6

      )

      (2.4

      )

      Comprehensive net income

       

      $

      706.1

       

      $

      36.0

       

      $

      595.2

       

      Basic earnings per share

       

       

       

       

       

       

       

      Income before extraordinary item

       

      $

      60.52

       

      $

      26.96

       

      $

      24.05

       

      Net income

       

      62.51

       

      26.96

       

      42.28

       

      Diluted earnings per share

       

       

       

       

       

       

       

      Income before extraordinary item

       

      $

      60.33

       

      $

      26.56

       

      $

      22.67

       

      Net income

       

      62.32

       

      26.56

       

      39.92

       

      Dividends declared and paid per common share

       

      $

      8.00

       

      $

      8.00

       

      $

      1.00

       

      See Notes to Consolidated Financial Statements.

      F-2




      CONSOLIDATED STATEMENTS OF COMMON SHAREHOLDERS’ EQUITY

       
       Year Ended December 31,
       
      Millions, except per share amounts

       
       2004
       2003
       2002
       
      Revenues          
       Earned insurance and reinsurance premiums $3,820.5 $3,137.7 $3,576.4 
       Net investment income  360.9  290.9  366.0 
       Net realized investment gains  181.1  162.6  156.0 
       Other revenue  190.5  202.6  109.5 
        
       
       
       
        Total revenues  4,553.0  3,793.8  4,207.9 
        
       
       
       
      Expenses          
       Losses and loss adjustment expenses  2,591.1  2,138.1  2,638.2 
       Insurance and reinsurance acquisition expenses  743.5  615.0  804.3 
       Other underwriting expenses  521.3  347.1  401.7 
       General and administrative expenses  309.3  201.8  92.7 
       Accretion of fair value adjustment to loss and loss adjustment expense reserves  43.3  48.6  79.8 
       Interest expense on debt  49.1  48.6  71.8 
       Interest expense—dividends and accretion on preferred stock subject to mandatory redemption  47.6  22.3   
        
       
       
       
        Total expenses  4,305.2  3,421.5  4,088.5 
        
       
       
       
      Pretax income  247.8  372.3  119.4 
       Income tax provision  (47.0) (127.6) (11.7)
        
       
       
       
      Net income before minority interest, equity in earnings of affiliates, accounting changes and extraordinary items  200.8  244.7  107.7 
       Dividends on mandatorily redeemable preferred stock of subsidiaries    (15.1) (30.3)
       Accretion of preferred stock of subsidiaries to face value    (6.4) (10.6)
       Equity in earnings of unconsolidated affiliates  37.4  57.4  14.0 
        
       
       
       
      Net income before accounting changes and extraordinary items  238.2  280.6  80.8 
       Cumulative effect of changes in accounting principles      660.2 
       Excess of fair value of acquired net assets over cost  180.5    7.1 
        
       
       
       
      Net income  418.7  280.6  748.1 
        
       
       
       
       Net change in unrealized gains and losses for investments held  218.0  163.1  298.7 
       Net change in foreign currency translation  48.8  3.2  (1.4)
       Recognition of unrealized gains and losses for investments sold  (87.9) (87.3) (95.0)
       Net change in minimum pension liability  (2.4)    
        
       
       
       
      Comprehensive net income $595.2 $359.6 $950.4 
        
       
       
       
       Computation of net income available to common shareholders          
       Net income $418.7 $280.6 $748.1 
       Redemption value adjustment—Convertible Preference Shares    (49.5) (19.0)
       Dividends declared on Convertible Preference Shares      (.4)
        
       
       
       
      Net income available to common shareholders $418.7 $231.1 $728.7 
        
       
       
       
      Basic earnings per Common Share          
       Net income before accounting changes and extraordinary items $24.05 $26.48 $7.47 
       Net income  42.28  26.48  88.61 
      Diluted earnings per Common Share          
       Net income before accounting changes and extraordinary items $22.67 $23.63 $6.80 
       Net income  39.92  23.63  80.75 
        
       
       
       
      Dividends declared and paid per Common Share $1.00 $1.00 $1.00 
        
       
       
       

       

       

       

       

      Common

       

       

       

      Accum. other

       

       

       

       

       

      Common

       

      shares and

       

       

       

      comprehensive

       

       

       

       

       

      shareholders’

       

      paid-in

       

      Retained

       

      income,

       

      Unearned

       

      Millions

       

      equity

       

      surplus

       

      earnings

       

      after-tax

       

      compensation

       

      Balances at January 1, 2004

       

      $

      2,979.2

       

      $

      1,408.6

       

      $

      1,286.4

       

      $

      285.7

       

      $

      (1.5

      )

      Net income

       

      418.7

       

       

      418.7

       

       

       

      Net change in unrealized investment gains

       

      130.1

       

       

       

      130.1

       

       

      Net change in foreign currency translation

       

      48.8

       

       

       

      48.8

       

       

      Net change in minimum pension liability

       

      (2.4

      )

       

       

      (2.4

      )

       

      Dividends declared on common shares

       

      (9.1

      )

       

      (9.1

      )

       

       

      Exercise of warrants held by Berkshire Hathaway, Inc.

       

      294.0

       

      294.0

       

       

       

       

      Issuances of common shares

       

      13.7

       

      13.7

       

       

       

       

      Repurchases and retirements of common shares

       

      (.2

      )

      (.1

      )

      (.1

      )

       

       

      Issuance of restricted common shares

       

       

      4.7

       

       

       

      (4.7

      )

      Amortization of restricted common share awards

       

      2.0

       

       

       

       

      2.0

       

      Accrued Option expense

       

      9.1

       

      9.1

       

       

       

       

      Balances at December 31, 2004

       

      3,883.9

       

      1,730.0

       

      1,695.9

       

      462.2

       

      (4.2

      )

      Net income

       

      290.1

       

       

      290.1

       

       

       

      Net change in unrealized investment gains

       

      (182.2

      )

       

       

      (182.2

      )

       

      Net change in foreign currency translation

       

      (70.3

      )

       

       

      (70.3

      )

       

      Net change in minimum pension liability and other

       

      (1.6

      )

       

       

      (1.6

      )

       

      Dividends declared on common shares

       

      (86.2

      )

       

      (86.2

      )

       

       

      Issuances of common shares

       

      1.1

       

      1.1

       

       

       

       

      Repurchases and retirements of common shares

       

      (.1

      )

      (.1

      )

       

       

       

      Forfeiture of restricted common shares

       

       

      (.3

      )

       

       

      .3

       

      Amortization of restricted common share awards

       

      2.0

       

       

       

       

      2.0

       

      Accrued Option expense

       

      (3.5

      )

      (3.5

      )

       

       

       

      Balances at December 31, 2005

       

      3,833.2

       

      1,727.2

       

      1,899.8

       

      208.1

       

      (1.9

      )

      Cumulative effect adjustment - hybrid instruments

       

       

       

      9.2

       

      (9.2

      )

       

      Cumulative effect adjustment - share-based compensation

       

       

      (1.9

      )

       

       

      1.9

       

      Net income

       

      673.2

       

       

      673.2

       

       

       

      Net change in unrealized investment gains

       

      (30.7

      )

       

       

      (30.7

      )

       

      Net change in foreign currency translation

       

      59.0

       

       

       

      59.0

       

       

      Net change in other

       

      .5

       

       

       

      .5

       

       

      Dividends declared on common shares

       

      (86.2

      )

       

      (86.2

      )

       

       

      Issuances of common shares

       

      0.6

       

      0.6

       

       

       

       

      Amortization of restricted common share awards

       

      1.6

       

      1.6

       

       

       

       

      Adjustment for initial adoption of FAS 158, net of tax

       

      4.1

       

       

       

      4.1

       

       

      Balances at December 31, 2006

       

      $

      4,455.3

       

      $

      1,727.5

       

      $

      2,496.0

       

      $

      231.8

       

      $

       

      See Notes to Consolidated Financial Statements.



      CONSOLIDATED STATEMENTS OF COMMON SHAREHOLDERS' EQUITY
      CASH FLOWS

      Millions

       Total
       Common
      Shares and
      paid-in
      surplus

       Retained
      earnings

       Accumulated
      other
      comprehensive
      income

       Unearned
      compensation

       
      Balances at January 1, 2002 $1,444.6 $1,106.6 $355.1 $4.4 $(21.5)
        
       
       
       
       
       
      Net income  748.1    748.1     
      Net change in unrealized investment gains  203.7      203.7   
      Net change in foreign currency translation  (1.4)     (1.4)  
      Dividends declared on Convertible Preference Shares  (.4)   (.4)    
      Dividends declared on Common Shares  (8.3)   (8.3)    
      Issuances of Common Shares  30.2  30.2       
      Redemption value adjustment—Convertible Preference Shares  (19.0)   (19.0)    
      Repurchases and retirements of Common Shares  (6.5) (2.9) (3.6)    
      Amortization of Restricted Share awards  16.2        16.2 
      Accrued Option expense  .7  .7       
        
       
       
       
       
       
      Balances at December 31, 2002  2,407.9  1,134.6  1,071.9  206.7  (5.3)
        
       
       
       
       
       
      Net income  280.6    280.6     
      Net change in unrealized investment gains  75.8      75.8   
      Net change in foreign currency translation  3.2      3.2   
      Dividends declared on Common Shares  (8.3)   (8.3)    
      Issuances of Common Shares  270.1  270.1       
      Repurchases and retirements of Common Shares  (13.8) (5.5) (8.3)    
      Issuance of Restricted Shares    2.0      (2.0)
      Amortization of Restricted Share awards  5.8        5.8 
      Redemption value adjustment—Convertible Preference Shares  (49.5)   (49.5)    
      Accrued Option expense  7.4  7.4       
        
       
       
       
       
       
      Balances at December 31, 2003  2,979.2  1,408.6  1,286.4  285.7  (1.5)
        
       
       
       
       
       
      Net income  418.7    418.7     
      Net change in unrealized investment gains  130.1      130.1   
      Net change in foreign currency translation  48.8      48.8   
      Net change in minimum pension liability  (2.4)     (2.4)  
      Dividends declared on Common Shares  (9.1)   (9.1)    
      Exercise of warrants held by Berkshire Hathaway, Inc.  294.0  294.0       
      Issuances of Common Shares  13.7  13.7       
      Repurchases and retirements of Common Shares  (.2) (.1) (.1)    
      Issuances of Restricted Shares    4.7      (4.7)
      Amortization of Restricted Share awards  2.0        2.0 
      Accrued Option expense  9.1  9.1       
        
       
       
       
       
       
      Balances at December 31, 2004 $3,883.9 $1,730.0 $1,695.9 $462.2 $(4.2)
        
       
       
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Cash flows from operations:

       

       

       

       

       

       

       

      Net income

       

      $

      673.2

       

      $

      290.1

       

      $

      418.7

       

      Charges (credits) to reconcile net income to net cash used for operations:

       

       

       

       

       

       

       

      Excess of fair value of acquired net assets over cost

       

      21.4

       

       

      (180.5

      )

      Net realized investment gains

       

      (272.7

      )

      (112.6

      )

      (181.1

      )

      Gain on sale of shares of OneBeacon Insurance Group, Ltd.

       

      (171.3

      )

       

       

      Undistributed equity in earnings from unconsolidated insurance affiliates, after-tax

       

      48.7

       

      (33.6

      )

      (37.4

      )

      Deferred income tax provision (benefit)

       

      33.2

       

      28.2

       

      (59.0

      )

      Other operating items:

       

       

       

       

       

       

       

      Net Federal income tax receipts (payments)

       

      48.3

       

      35.3

       

      (86.5

      )

      Net change in insurance and reinsurance premiums receivable

       

      111.1

       

      (58.9

      )

      90.0

       

      Net change in reinsurance recoverable on paid and unpaid losses

       

      738.2

       

      (1,416.4

      )

      300.8

       

      Net change in loss and LAE reserves

       

      (1,300.2

      )

      1,188.0

       

      (750.4

      )

      Net change in reserves for structured contracts

       

      (77.5

      )

      (151.3

      )

      (56.3

      )

      Net change in unearned insurance and reinsurance premiums

       

      (4.5

      )

      (37.1

      )

      (54.0

      )

      Net change in funds held by ceding reinsurers

       

      177.3

       

      307.2

       

      12.2

       

      Net change in other assets and liabilities, net

       

      70.3

       

      (323.9

      )

      26.8

       

      Net cash provided from (used for) operations

       

      95.5

       

      (285.0

      )

      (556.7

      )

      Cash flows from investing activities:

       

       

       

       

       

       

       

      Net change in short-term investments

       

      (526.2

      )

      295.3

       

      768.2

       

      Sales of fixed maturity investments

       

      4,576.2

       

      5,785.6

       

      5,905.1

       

      Maturities, calls and paydowns of fixed maturity investments

       

      833.9

       

      597.2

       

      1,561.7

       

      Sales of common equity securities and other investments

       

      819.2

       

      581.1

       

      557.3

       

      Sales of trust account investments

       

      7.1

       

       

       

      Sales of consolidated and unconsolidated affiliates, net of cash sold

       

      771.4

       

      180.7

       

      220.9

       

      Sales of renewal rights

       

      32.0

       

       

       

      Purchases of trust account assets

       

      (344.0

      )

       

       

      Purchases of common equity securities and other investments

       

      (697.0

      )

      (589.8

      )

      (378.8

      )

      Purchases of fixed maturity investments

       

      (5,800.5

      )

      (6,484.7

      )

      (7,157.3

      )

      Purchases of consolidated and unconsolidated affiliates, net of cash acquired

       

      (33.0

      )

       

      (659.8

      )

      Net change in unsettled investment purchases and sales

       

      36.6

       

      10.7

       

      (337.2

      )

      Net acquisitions of property and equipment

       

      (19.8

      )

      (38.5

      )

      (13.6

      )

      Net cash (used for) provided from investing activities

       

      (344.1

      )

      337.6

       

      466.5

       

      Cash flows from financing activities:

       

       

       

       

       

       

       

      Issuance of debt

       

      482.4

       

      18.4

       

       

      Repayment of debt

       

      (155.0

      )

       

      (25.0

      )

      Cash dividends paid to common shareholders

       

      (86.2

      )

      (86.2

      )

      (9.1

      )

      Cash dividends paid to preferred shareholders

       

      (30.3

      )

      (30.3

      )

      (30.3

      )

      Proceeds from issuances of common shares

       

      .6

       

      1.1

       

      307.8

       

      Net cash provided from (used for) financing activities

       

      211.5

       

      (97.0

      )

      243.4

       

      Effect of exchange rate changes on cash

       

      8.4

       

      (11.0

      )

       

      Net (decrease) increase in cash during year

       

      (28.7

      )

      (55.4

      )

      153.2

       

      Cash balance at beginning of year

       

      187.7

       

      243.1

       

      89.9

       

      Cash balance at end of year

       

      $

      159.0

       

      $

      187.7

       

      $

      243.1

       

      See Notes to Consolidated Financial Statements.

      F-4






      CONSOLIDATED STATEMENTS OF CASH FLOWS

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Net income $418.7 $280.6 $748.1 
      Charges (credits) to reconcile net income to net cash used for operating activities:          
       Cumulative effect of changes in accounting principles      (660.2)
       Excess of fair value of acquired net assets over cost  (180.5)   (7.1)
       Net realized investment gains  (181.1) (162.6) (156.0)
       Undistributed equity in earnings from unconsolidated insurance affiliates, after-tax  (37.4) (57.4) (14.0)
       Deferred income tax (benefit) provision  (59.0) 105.0  163.9 
      Other operating items:          
       Net Federal income tax (payments) receipts  (86.5) 27.4  189.6 
       Net change in insurance and reinsurance balances receivable  90.0  51.5  273.0 
       Net change in reinsurance recoverable on paid and unpaid losses  300.8  636.2  110.3 
       Net change in deferred acquisition costs  (33.5) 11.3  68.4 
       Net change in loss and LAE reserves and reserves for structured contracts  (806.7) (1,147.1) (652.3)
       Net change in unearned insurance and reinsurance premiums  (54.0) (105.0) (300.1)
       Net change in other assets and liabilities, net  72.5  (148.4) (137.7)
        
       
       
       
      Net cash used for operating activities  (556.7) (508.5) (374.1)
        
       
       
       
      Cash flows from investing activities:          
       Net decrease in short-term investments  768.2  244.0  755.2 
       Sales of fixed maturity investments  5,905.1  17,290.5  13,531.9 
       Maturities of fixed maturity investments  1,561.7  1,372.0  411.9 
       Sales of common equity securities and other investments  557.3  160.1  98.4 
       Sales of consolidated and unconsolidated affiliates, net of cash sold  220.9  25.0   
       Purchases of fixed maturity investments  (7,157.3) (18,248.2) (14,066.6)
       Purchases of common equity securities and other investments  (378.8) (354.4) (244.5)
       Purchases of consolidated and unconsolidated affiliates, net of cash acquired  (659.8)   (.5)
       Net change in unsettled investment purchases and sales  (337.2) 28.1  98.4 
       Net (acquisitions) dispositions of property and equipment  (13.6) 43.4  (12.8)
        
       
       
       
      Net cash provided from investing activities  466.5  560.5  571.4 
        
       
       
       
      Cash flows from financing activities:          
       Proceeds from issuances of Common Shares and Convertible Preference Shares  307.8  1.5  226.4 
       Proceeds from issuances of debt    693.4  8.0 
       Repayments of debt  (25.0) (739.9) (338.6)
       Dividends paid on mandatorily redeemable preferred stock of subsidiaries  (30.3) (30.3) (30.3)
       Dividends paid on Common Shares  (9.1) (8.3) (8.3)
       Dividends paid on Convertible Preference Shares      (.4)
        
       
       
       
      Net cash provided from (used for) financing activities  243.4  (83.6) (143.2)
        
       
       
       
      Net increase (decrease) in cash during year  153.2  (31.6) 54.1 
      Cash balance at beginning of year  89.9  121.5  67.4 
        
       
       
       
      Cash balance at end of year $243.1 $89.9 $121.5 
        
       
       
       

      See Notes to Consolidated Financial Statements.



      NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

      NOTE 1. Summary of Significant Accounting Policies

      Basis of presentation

      The accompanying consolidated financial statements include the accounts of White Mountains Insurance Group, Ltd. (the “Company” or the Company“Registrant”) and its subsidiaries and have been prepared in accordance with GAAPGenerally Accepted Accounting Principles in the United States. Previously defined termsStates (“GAAP”). Within this report, the term “White Mountains” is used to refer to one or more entities within these financial statements have the same meaningconsolidated organization, as they have elsewhere within this report.the context requires. The Company is aan exempted Bermuda limited liability company withwhose principal businesses are conducted through its property and casualty insurance and reinsurance subsidiaries and affiliates. The Company’s headquarters are located at The Bank of Butterfield Building, 42 Reid Street, 6th Floor, Hamilton, Bermuda HM 12, Bermuda. The Company'sits principal executive office is located at 80 South Main Street, Hanover, New Hampshire 03755-2053 and its registered office is located at Clarendon House, 2 Church Street, Hamilton, Bermuda HM 11.

              The Company's White Mountains’ reportable segments are OneBeacon, White Mountains Re, Esurance and Other Operations.

      The OneBeacon segment consists of OneBeacon Insurance Group, Ltd. (“OneBeacon Ltd.”), a Bermuda-based company that owns a family of companies are U.S.-based property and casualty insurance writers,companies (collectively “OneBeacon”), substantially all of which wereoperate in a multi-company pool. OneBeacon offers a wide range of specialty, personal and commercial products and services sold primarily through select independent agents and brokers. OneBeacon was acquired by White Mountains from Aviva plc ("Aviva", formerly CGNU plc) on June 1,in 2001 (the "OneBeacon Acquisition"“OneBeacon Acquisition”). During the fourth quarter of 2006, White Mountains sold 27.6 million, or 27.6%, of OneBeacon Ltd.’s common shares in an initial public offering (the “OneBeacon Offering”). In connection with the OneBeacon Offering, White Mountains undertook an internal reorganization (the “Reorganization”) and formed OneBeacon Ltd. for the purpose of holding certain of its property and casualty insurance businesses. As a result of the Reorganization, certain of White Mountains’ businesses that have been historically reported as part of its Other Operations segment are now owned by OneBeacon Ltd., and accordingly have been included in the OneBeacon segment for all periods presented in this report. In addition, certain other businesses of White Mountains that had been historically reported as part of its OneBeacon segment and which were not held by OneBeacon Ltd. following the OneBeacon Offering are included in the Other Operations segment for all periods presented in this report.

      The White Mountains'Mountains Re segment consists of White Mountains Re Group, Ltd., a Bermuda-based company, and its subsidiaries (collectively “White Mountains Re”). White Mountains Re offers reinsurance operations are conducted primarilycapacity for property, liability, accident & health, aviation and certain marine exposures on a worldwide basis through its recently formed global reinsurance organization ("White Mountains Re"), which oversees the operations of Folksamerica, Sirius, and WMU, as described below.

      subsidiaries, Folksamerica Reinsurance Company (“Folksamerica Re”, together with its immediate parent, Folksamerica Holding Company ("Folksamerica"(“FHC”) became, “Folksamerica”), which has been a wholly-owned subsidiary of White Mountains in 1998. In connection with the OneBeacon Acquisition, Folksamerica was contributed to OneBeacon. On November 30, 2004, White Mountains completed a significant corporate reorganizationsince 1998, and as part of the reorganization, ownership of Folksamerica was transferred to White Mountains Re.

      Sirius International Insurance Corporation (“Sirius International”). On April 16, 2004, White Mountains acquired Sirius Insurance HoldingHoldings Sweden AB and its subsidiaries ("Sirius"(“Sirius”) (the “Sirius Acquisition”). The principal companies acquired were Sirius International, Sirius America Insurance Company (“Sirius America”), which provides primary insurance programs in the United States, and Scandinavian Reinsurance Company Ltd. (“Scandinavian Re”), a group of international insurers and reinsurersreinsurance company that focuses mainly onhas been in run-off since 2002. White Mountains Re also provides reinsurance advisory services, specializing primarily in property and other short-tailed lines from ABB Ltd. (See Note 2). Subsequent to White Mountains' acquisition of Sirius, Fund American Reinsurance Company Ltd. ("Fund American Re") was sold to Sirius by the Company. Accordingly, the results of Fund American Re are included in Sirius' results throughout this report. White Mountains' reinsurance, operations also include its wholly owned subsidiaries,through White Mountains Re Underwriting Limited (domiciled in Ireland) andServices Ltd. (“WMRUS”). On August 2, 2006, White Mountains Underwriting (Bermuda) LimitedRe sold Sirius America to an investor group. As part of the transaction, White Mountains acquired an equity interest of approximately 18% in the acquiring entity, Lightyear Delos Acquisition Corp. (“Delos”), and accounts for Delos on the equity method within its Other Operations segment.

      The Esurance segment consists of Esurance Holdings, Ltd., a Bermuda-based company, and certain of its subsidiaries (collectively, "WMU"“Esurance”). WMU is an reinsurance advisory company specializing in international property and marine excess reinsurance.

      Esurance, which has been a unit of White Mountains since October 2000. Esurance markets2000, sells personal auto insurance directly to customers online and through select online agents.

      White Mountains'Mountains’ Other Operations segment consists of the Company and its intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”), its weather risk management business (“Galileo”), its variable annuity reinsurance business (“WM Life Re”), as well as the International American Group, Inc. (the "International“International American Group"Group”). and various other entities not included in other segments. The International American Group, which was acquired by White Mountains in 1999, consists of American Centennial Insurance Company ("(“American Centennial"Centennial”) and British Insurance Company of Cayman ("(“British Insurance Company"Company”), both of which are in run-off. The Other Operations segment also includes White Mountains’ investments in warrants to purchase common shares of Montpelier Re Holdings, Ltd. (“Montpelier Re”), warrants to purchase common shares of Symetra Financial Corporation (“Symetra”) and prior to its sale in January 2004, also included Peninsula Insurance Company ("Peninsula").

              White Mountains has completed numerous significant transactions during the periods presented which have affected the comparabilitycommon and preferred shares of the financial statement information presented herein. White Mountains' consolidated statements of income and comprehensive income include the results of acquired businesses beginning as of the date each respective acquisition was completed. Net changes inDelos.



      assets and liabilities reported in the consolidated statements of cash flows exclude those assets and liabilities acquired or sold during the periods presented.

      All significant intercompany transactions have been eliminated in consolidation. The financial statements include all adjustments considered necessary by management to fairly present the Company's financial position, its results of operations and its cash flows.

              The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Certain amounts in the prior period financial statements have been reclassified to conform with the current presentation.

      Investment securities

      InvestmentWhite Mountains’ invested assets comprise securities and other investments held for general investment purposes and those held in two segregated trust accounts.

      White Mountains'Mountains’ portfolio of fixed maturity investments and common equity securities held for general investment purposes are classified as available for sale and are reported at fair value as of the balance sheet date as determined by quoted market values. Other investments principally include investments in limited partnership interests which are recorded using the equity method of accounting.prices. Net unrealized investment gains and losses after-tax, associated with such investmentson available for sale securities are reported as a net, amountafter-tax, as a separate component of shareholders'shareholders’ equity. Changes in net unrealized investment gains and losses, net of the effect of adjustments for minority interest and after-tax, are reported as a component of other comprehensive income.

      White Mountains’ portfolio of fixed maturity investments held in the segregated trust accounts are classified as held to maturity as the Company has the ability and intent to hold the investments until maturity. Securities classified as held to maturity are recorded at amortized cost.

      Investment securities are regularly reviewed for impairment based on criteria that include the extent to which cost exceeds market value, the duration of the market decline, the financial health of and specific prospects for the issuer and the ability and intent to hold the investment to maturity.recovery. Investment losses that are other than temporary are recognized in earnings. Realized gains and losses resulting from sales of investment securities are accounted for using the weighted average method.

      Premiums and discounts on all fixed maturity investments are accreted to income over the anticipated life of the investment.

      Short-term investments consist of money market funds, certificates of deposit and other securities which mature or become available for use within one year. Short-term investments are carried at amortized cost, which approximated fair value as of December 31, 20042006 and 2003.2005. Short-term investments held in the segregated trust account are included in the total of investments held in trust.

      Other investments comprise White Mountains’ investments in limited partnerships, warrants, equity method investments and an interest rate swap accounted for as a cash flow hedge.

      Investments in limited partners hips

      White Mountains has investments in a number of limited partnerships, which are recorded in other investments. Changes in White Mountains’ interest in limited partnership interests accounted for using the equity method are included in net realized investment gains. Changes in White Mountains’ interest in limited partnerships not accounted for under the equity method are reported, net of tax, as a component of shareholders’ equity, with changes therein reported, after-tax, as a component of other comprehensive income.

      Securities lending

      White Mountains participates in a securities lending program wherebyas a mechanism for generating additional investment income on its fixed maturity portfolio. Under the security lending arrangements, certain of its fixed maturity investments are loaned to other institutions for short periods of time through a lending agent. White Mountains maintains control over the securities it lends, retains the earnings and cash flows associated with the loaned securities and receives a fee from the borrower for the temporary use of the asset. Collateral, in the form of cash and United States government securities, is required at a rate of 102% of the fair value of the loaned securities, and is monitored and maintainedcontrolled by the lending agent.agent and may not be sold or re-pledged. The fair value of the securities lending collateral is recorded as both an asset and liability on the balance sheet. However, other than in the event of default by the borrower, this collateral is not available to White Mountains and will be remitted to the borrower by the lending agent upon the return of the loaned securities. Because of these restrictions, White Mountains considers the collateral transactions associated with its securities lending activities to be non-cash transactions. An indemnification agreement with the lending agent protects White Mountains in the event a borrower becomes insolvent or fails to return any of the securities on loan.


       

      Derivative financial instruments

      White Mountains holds a variety of derivative financial instruments for both risk management and investment purposes. White Mountains recognizes all derivatives as either assets or liabilities, measured at fair value, in the consolidated balance sheets.

      Convertible bonds

      White Mountains owns convertible bonds. The Company does not use derivatives for hedging, but does own convertible bonds withequity conversion option is considered an embedded derivatives. Inderivative. Prior to January 1, 2006, in accordance with SFASStatement of Financial Accounting Standard (“SFAS”) No. 133, "Accounting“Accounting for Derivative Instruments and Hedging Activities"Activities” (“SFAS 133”), the Company bifurcatesWhite Mountains bifurcated all equity option derivatives that are embedded in its convertible bonds. The original host instruments arewere reported, at fair value, in fixed maturity investments and the embedded derivatives arewere reported, at fair value, in other investments. Because these derivatives do not qualify as hedging instruments, changesChanges in the fair values of derivatives arethe equity options were included in realized gains and losses. Effective January 1, 2006, White Mountains adopted FAS No. 155, “Accounting for Certain Hybrid Instruments, an amendment to Statement Nos. 133 and 140” (“FAS 155”). FAS 155 eliminated the requirement to bifurcate financial instruments with embedded derivatives if the holder of the instrument elects to account for the entire instrument on a fair value basis with changes in fair value of the entire instrument recorded through income as realized gains. Prior to adoption of FAS 155, White Mountains had recorded $283.5 million related to the host instrument in fixed maturity investments and $99.8 million for the equity conversion option in other investments. Upon adoption of FAS 155, White Mountains recorded an adjustment of $9.2 million to reclassify net unrealized gains on investments (gross gains of $9.8 million and gross losses of $.6 million) to opening retained earnings to reflect the cumulative effect of adoption. The fair value of convertible bonds at December 31, 2006 was $429.5 million and was included in fixed maturity investments.

      Warrants

      White Mountains holds warrants to acquire common shares of Symetra and Montpelier Re. White Mountains also holds warrants that it has received in the restructuring (e.g., securities received from bankruptcy proceedings) of certain of its common equity and/or fixed maturity investments. White Mountains accounts for its investments in warrants in accordance with SFAS 133 as derivatives. The warrants are recorded in other investments at fair value with changes therein recorded in realized gains or losses in the period in which they occur.

      White Mountains holds warrants to acquire 7.2 million common shares of Montpelier Re and warrants to acquire 1.1 million common shares of Symetra. The Company uses a Black-Scholes valuation model to determine the fair value of the Montpelier Re and Symetra warrants. The major assumptions used in the valuation of the Montpelier Re warrants were a risk-free rate of 4.70%, volatility of 30% and an expected life of approximately 5 years. The major assumptions used in valuing the Symetra warrants were a risk-free rate of 4.70%, volatility of 25% and an expected life of approximately 5 years.

      Cash flow hedge

      Contemporaneously with entering into a variable rate mortgage note, OneBeacon entered into an interest rate swap agreement under which it pays a fixed rate and receives a variable rate to hedge its exposure to interest rate fluctuations. The notional amount of the swap is equal to the outstanding principal of the mortgage note it hedges and is adjusted at the same time as the mortgage note principal changes for drawdowns and repayments. The underlying index used to determine the variable interest paid under the swap is the same as that used for OneBeacon’s variable rate mortgage note. In accordance with SFAS 133, OneBeacon has accounted for the swap as a cash flow hedge and has recorded the interest rate swap at fair value on the balance sheet in other assets. Changes in the fair value of the interest rate swap, after tax, are reported as a component of other comprehensive income. OneBeacon monitors continued effectiveness of the hedge by monitoring the changes in the terms of the instruments as described above as compared to the actual changes in principal and notional amount in the mortgage note and interest rate swap.


      Weather contracts

      During 2006, White Mountains entered into the weather risk management business through its newly formed subsidiary, Galileo. Galileo offers weather risk management products, which, at December 31, 2006, were all in the form of derivative financial instruments. All weather derivatives are recognized as either assets or liabilities in the balance sheet. The fair value for exchange traded contracts are based upon quoted market prices, where available. Where quoted market prices are not available, management uses available market data and internal pricing models based upon consistent statistical methodologies to estimate the fair value. The gain or loss at the inception date for contracts valued based upon internal pricing models are deferred and amortized into income over the period at risk for each underlying contract. At December 31, 2006, Galileo has unamortized deferred gains of $4.7 million.

      Galileo’s weather derivatives are not designed to meet the GAAP criteria for hedge accounting. Accordingly, changes in the fair value subsequent to inception are recognized in the period in which they occur and are recorded in other revenues within the income statement. For the year ended December 31, 2006, Galileo recognized $2.1 million of net losses on its weather derivatives portfolio. The fair values of Galileo’s risk management products are subject to change in the near-term and reflect management’s best estimate based on various factors including, but not limited to, realized and forecasted weather conditions, changes in interest or foreign currency exchange rates and other market factors. Estimating the fair value of derivative instruments that do not have quoted market prices requires management’s judgment in determining amounts that could reasonably be expected to be received from or paid to a third party to settle the contracts. Such amounts could be materially different from the amounts that might be realized in an actual transaction to settle the contract with a third party.

      At December 31, 2006, Galileo had recorded a net liability of $2.1 million for exchange traded weather derivative contracts and a net liability of $10.0 million for weather derivative contracts valued based on internal pricing models. Galileo requires certain counterparties to provide cash collateral that it invests until the underlying contract has settled. At December 31, 2006, Galileo had recorded a $25.2 million liability for collateral received.

      Galileo’s weather risk management contracts, all of which mature within one year, are summarized in the following table:

      (Millions)

       

       

       

      Carrying value of net liability for weather derivative contracts at January 1, 2006

       

      $

       

      Net consideration received during the year for new contracts

       

      12.6

       

      Net payments made on contracts settled during the year

       

      (2.6

      )

      Net decrease in fair value on settled and unsettled contracts

       

      2.1

       

      Carrying value of net liability for weather derivative contracts at December 31, 2006 (1)

       

      $

      12.1

       


      (1)     Amount includes $4.7 million in unamortized deferred gains.

      Derivatives - Variable annuity reinsurance

      In August 2006, White Mountains entered into an agreement to reinsure death and living benefit guarantees associated with certain variable annuities in Japan through its wholly owned subsidiary, WM Life Re. The accounting for benefit guarantees differs depending on whether or not the guarantee is classified as a derivative or an insurance liability.

      Guaranteed minimum accumulation benefits (“GMABs”) are paid to an annuitant for any shortfall between accumulated account value at the end of the accumulation period and the annuitant’s total deposit, less any withdrawal payments made to the annuitant during the accumulation period. GMABs meet the definition of a derivative for accounting purposes and are accounted for under FAS 133. Therefore, GMABs are carried at fair value, with changes thereon recognized in income in the period of the change. The liability for the reinsured GMAB contracts has been determined using internal valuation models that use assumptions for interest rates, equity markets, foreign exchange rates and market volatilities at the valuation date, as well as annuitant-related actuarial assumptions, including surrender and mortality rates.

      If an annuitant dies during the accumulation period of an annuity contract, guaranteed minimum death benefits (“GMDBs”) are paid to the annuitant’s beneficiary for shortfalls between accumulated account value at the time of an annuitant’s death and the annuitant’s total deposit, less any living benefit payments or withdrawal payments previously made to the annuitant. GMDBs are accounted for in accordance with Statement of Position 03-1, “Accounting and Reporting by Insurance Enterprises for Certain Nontraditional Long-Duration Contracts and for Separate Accounts” (the


      “SOP”). The liability for the reinsured GMDB contracts has been calculated using the methodology prescribed within the SOP for variable annuity contracts and is based on investment returns, mortality, surrender rates and other assumptions.

      The valuation of these liabilities involve significant judgment and is subject to change based upon changes in capital market assumptions and emerging surrender and mortality experience of the underlying contracts in force. At December 31, 2006, the liability recorded for the variable annuity benefit guarantees was $(13.8) million, which is included in other investments was $33.9 millionliabilities.

      WM Life Re has entered into derivative contracts that are designed to economically hedge against changes in the fair value of living and death benefit liabilities associated with its variable annuity reinsurance arrangements. The derivatives include futures and over-the-counter option contracts on interest rates, major equity indices, and foreign currencies. All derivative instruments are recorded as assets or liabilities at fair value on the balance sheet. These derivative financial instruments do not meet the hedging criteria under FAS 133, and accordingly, changes in fair value are recognized in the current period as gains or losses in the income statement. At December 31, 20042006, the fair value of these derivative contracts, which is recorded in other assets, was $21.2 million and realized gains (losses) on derivatives was $7.3had inception to date losses of $15.7 million, for the period ending December 31, 2004.



      Cashwhich are included in other revenues. In connection with these derivative contracts, WM Life Re has deposited collateral comprising $2.2 million of cash and $7.7 million of securities with counterparties.

      Cash

      Cash includes amounts on hand and demand deposits with banks and other financial institutions. Amounts presented in the statement of cash flows are shown net of balances acquired and sold in the purchase or sale of the Company's Company’s consolidated subsidiaries.

      Insurance and reinsurance operations

      White Mountains accounts for insurance and reinsurance policies that it writes in accordance with SFAS No. 60, "Accounting“Accounting and Reporting by Insurance Enterprises" ("Enterprises” (“SFAS 60"60”). Premiums written are recognized as revenues and are earned ratably over the term of the related policy or reinsurance treaty. Unearned premiums represent the portion of premiums written that are applicable to future insurance or reinsurance coverage provided by policies or treaties in force. AutoOne Insurance, which acts as a limited assigned distribution ("LAD"(“LAD”) servicing carrier, enters into contractual arrangements with insurance companies to assume private passenger automobile assigned risk exposures in the state of New York. AutoOne Insurance receives LAD servicing fees for assuming these risks. LAD servicing fees are typically a percentage of the total premiums that AutoOne Insurance must write to fulfill the obligation of the transferor company. LAD servicing carriers may choose to write certain policies voluntarily by taking risks out of the NYAIP.New York Automobile Insurance Plan (“NYAIP”). These policies generate takeout credits which can be "sold"“sold” for fees to the transferor company ("(“takeout fees"fees”). These fees are also typically a percentage of the transferor company'scompany’s NYAIP premium assignments. AutoOne Insurance'sInsurance’s LAD servicing and takeout fees are recorded as written premium when billed and are earned ratably over the term of the related policy to which the fee relates.

      Deferred acquisition costs represent commissions, premium taxes, brokerage expenses and other costs which are directly attributable to and vary with the production of new business. These costs are deferred and amortized over the applicable premium recognition period as insurance and reinsurance acquisition expenses. Deferred acquisition costs are limited to the amount expected to be recovered from future earned premiums and anticipated investment income. This limitation is referred to as a premium deficiency. A premium deficiency is recognized if the sum of expected loss and LAE,loss adjustment expenses (“LAE”), expected dividends to policyholders, unamortized acquisition costs, and maintenance costs exceeds related unearned premiums. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in order to eliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs then a liability is accrued for the excess deficiency.


      Losses and LAE are charged against income as incurred. Unpaid insurance losses and LAE are based on estimates (generally determined by claims adjusters, legal counsel and actuarial staff) of the ultimate costs of settling claims, including the effects of inflation and other societal and economic factors. Unpaid reinsurance losses and LAE are based primarily on reports received from ceding companies and actuarial projections. Unpaid loss and LAE reserves represent management'smanagement’s best estimate of ultimate losses and LAE, net of estimated salvage and subrogation recoveries, if applicable. Such estimates are regularly reviewed and updated and any adjustments resulting therefrom are reflected in current operations. The process of estimating loss and LAE involves a considerable degree of judgment by management and the ultimate amount of expense to be incurred could be considerably greater than or less than the amounts currently reflected in the financial statements.

      OneBeacon discounts certain of its long-term workers compensation loss and LAE reserves when such liabilities constitute unpaid but settled claims under which the payment pattern and ultimate costs are fixed and determinable on an individual claim basis. OneBeacon discounts these reserves using an average discount rate which is determined based on the facts and circumstances applicable at the time the claims are settled (4.7%(5.3% and 5.0% at December 31, 20042006 and 2003)2005). As of December 31, 20042006 and 2003,2005, the discount on OneBeacon'sOneBeacon’s workers compensation loss and LAE reserves amounted to $259.4$190.7 million and $294.5 million, respectively.$214.3 million.



      In connection with purchase accounting for the OneBeacon Acquisition, White Mountains was required to adjust to fair value OneBeacon'sOneBeacon’s loss and LAE reserves and the related reinsurance recoverables by $646.9 million and $346.9 million, respectively, on OneBeacon'sOneBeacon’s acquired balance sheet as of June 1, 2001. This net reduction to loss and LAE reserves of $300.0 million is being accreted through an income statement charge ratably with and over the period that the claims to which such reserves relate are expected to be settled. See Note 3.

      In connection with purchase accounting for the Sirius, Acquisition, White Mountains was required to adjust to fair value the loss and LAE reserves on Sirius'Sirius’ acquired balance sheet by $58.1 million. This fair value adjustment is being recognizedaccreted through an income statement charge ratably with and over the period the claims are settled. See Note 3.

      White Mountains'Mountains’ insurance and reinsurance subsidiaries enter into ceded reinsurance contracts from time to time to protect their businesses from losses due to concentration of risk, to manage their operating leverage ratios and to limit losses arising from catastrophic events. The majority of suchSuch reinsurance contracts are executed through excess of loss treaties and catastrophe contracts under which the reinsurer indemnifies for a specified part or all of certain types of losses over stipulated amounts arising from any one occurrence or event. White Mountains has also entered into quota share treaties with reinsurers under which all risks meeting prescribed criteria are covered on a pro-rata basis. The amount of each risk ceded by White Mountains is subject to maximum limits which vary by line of business and type of coverage. Amounts related to reinsurance contracts are recorded in accordance with SFAS 113 and Emerging Issues Task Force Topic No. D-54, as applicable.

      Amounts recoverable from reinsurers are estimated in a manner consistent with the claim liability associated with the reinsured policies. The collectibility of reinsurance recoverables is subject to the solvency of the reinsurers. White Mountains is selective in regard to its reinsurers, principally placing reinsurance with those reinsurers with a strong financial condition, industry ratings and underwriting ability. Management monitors the financial condition and ratings of its reinsurers on an ongoing basis.

      Reinsurance premiums, commissions, expense reimbursements and reserves related to reinsured business are accounted for on a basis consistent with those used in accounting for the original policies issued and the terms of the reinsurance contracts. Premiums ceded to other companies are reported as a reduction of premiums written. Expense allowances received in connection with reinsurance ceded have been accounted for as a reduction of the related policy acquisition costs and are deferred and amortized accordingly. Funds held by ceding companies represent amounts due to White Mountains in connection with certain assumed reinsurance agreements in which the ceding company retains a portion of the premium to provide security against future loss payments. The funds held by ceding companies are generally invested by the ceding company and a contractually agreed interest amount is credited to the Company and recognized as investment income. Funds held under reinsurance treaties represent contractual payments due to the reinsurer that White Mountains has retained to secure obligations of the reinsurer. Such amounts are recorded as liabilities in the consolidated financial statements.


      Accounting for Mandatory Shared Market Mechanisms

      As a condition to its licenses to do business in certain states, White Mountains'Mountains’ insurance operations must participate in various mandatory shared market mechanisms commonly referred to as "residual"“residual” or "involuntary"“involuntary” markets. These markets generally consist of risks considered to be undesirable from a standard or routine underwriting perspective. Each state dictates the levels of insurance coverage that is mandatorily assigned to participating insurers within these markets. The total amount of such business an insurer must accept in a particular state is generally based on that insurer'sinsurer’s market share of voluntary business written within that state. In certain cases, White Mountains is obligated to write business from shared market mechanisms at a future date based on its historical market share of all voluntary policies written within that state. Involuntary business generated from



      mandatory shared market mechanisms is accounted for in accordance with SFAS 60 or as assumed reinsurance under SFAS 113, "Accounting“Accounting and Reporting for Reinsurance of Short-Duration and Long-Duration Contracts"Contracts” (hereafter referred to as structured contracts) depending upon the structure of the mechanism.

              OneBeacon'sOneBeacon’s market assignments are typically required to be written in the current period, however, in certain cases OneBeacon is required to accept policy assignments at a future date. OneBeacon'sOneBeacon’s residual market assignments to be written in the future primarily relate to private passenger automobile assigned risk exposures within the State of New York where several of OneBeacon'sOneBeacon’s insurance subsidiaries write voluntary automobile insurance. The share of involuntary written premium for policies assigned by the NYAIP to a particular insurer in a given year is based on the proportion of the total voluntary writings in New York two years prior. Anticipated losses associated with future market assignments are recognized in accordance with SFAS No. 5, "Accounting“Accounting for Contingencies"Contingencies”, when the amount of such anticipated losses is determined to be probable and can be reasonably estimated.

      Accounting for Insurance-Related Assessments

      Under existing guaranty fund laws in all states, insurers licensed to do business in those states can be assessed for certain obligations of insolvent insurance companies to policyholders and claimants. In accordance with Statement of Position 97-3, "Accounting“Accounting by Insurance and Other Enterprises for Insurance-Related Assessments" ("Assessments” (“SOP 97-3"97-3”), White Mountains'Mountains’ insurance subsidiaries record guaranty fund assessments when such assessments are billed by the respective guaranty funds. In addition, each insurance subsidiary's policy is to accrue for any significant insolvencies when the lossit is probable that an assessment will be made and the assessment amount can be reasonably estimated.

      Reserves for Structured Contracts

      The reserve for structured contracts represents deposit liabilities for reinsurance contracts that do not satisfy the conditions for reinsurance accounting established in SFAS 113.

      For insurance and reinsurance contracts that transfer only significant timing risk or that transfer neither significant timing risk nor significant underwriting risk, the amount of the deposit asset or liability is adjusted at the balance sheet date by calculating the effective yield on the deposit to reflect actual payments to date and expected future payments. Changes in the carrying amounts are reported as a component of net investment income. Fees related to these contracts are recorded as investment income and are earned using the effective yield method or evenly over the life of the contract dependent upon contract terms.

      Deferred Software Costs

      White Mountains capitalizes costs related to computer software developed for internal use during the application development stage of software development projects in accordance with Statement of Position 98-1, "Accounting“Accounting for the Costs of Computer Software Developed or Obtained for Internal Use"Use”. These costs generally consist of certain external, payroll and payroll-related costs. White Mountains begins amortization of these costs once the project is completed and ready for its intended use. Amortization is on a straight-line basis and over a useful life of three to five years. At December 31, 20042006 and 2003,2005, White Mountains had deferred software costs of $56.1$43.9 million and $51.7 million, respectively.$50.2 million.



      Federal and foreign income taxes

      The majority of White Mountains'Mountains’ subsidiaries file consolidated tax returns in the United States. Income earned or losses generated by companies outside the United States are generally subject to an overall effective tax rate lower than that imposed by the United States.

      Deferred tax assets and liabilities are recorded when a difference between an asset or liability'sthe carrying amounts of assets and liabilities for financial statement valuereporting purposes and itsthe amounts for tax reporting valuepurposes exists, and for other temporary differences as defined by SFAS No. 109, "Accounting“Accounting for Income Taxes"Taxes”. The deferred tax asset or liability is recorded based on tax rates expected to be in effect when the difference reverses. The deferred tax asset is recognized when it is more likely than not that it will be realized.

      Foreign currency exchange

      The U.S. dollar is the functional currency for all of the Company'sCompany’s businesses except for the foreign reinsurance operations of Folksamerica, Sirius and WMU, foreign investment securitiesWMRUS and certain other smaller international activities. The national currencies of the subsidiaries are their functional currencies since their business is primarily transacted in such local currency. White Mountains also invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are converted using the average exchange rates for the period. Net foreign exchange gains and losses arising from the translation are generally reported in shareholders'shareholders’ equity, in accumulated other comprehensive income or loss, net of tax.

      Assets and liabilities relating to foreign operations are translated into the functional currency using current exchange rates; revenues and expenses are translated into the functional currency using the exchange rate of the transaction day. The resulting exchange gains and losses are reported as a component of net income in the period in which they arise. As of December 31, 20042006 and 2003,2005, White Mountains had an after-tax unrealized foreign currency translation gain gain/(loss) of $48.5$37.2 million, net of minority interest of $.7 million and ($.3)$(21.8) million, respectively, recorded on its consolidated balance sheet. For the years ended December 31, 2004, 2003 and 2002, White Mountains' foreign currency gains and losses reported on its consolidated income statements were insignificant for all periods presented.

      The following rates of exchange for the U.S. dollar have been used for the most significant operations:

      Currency

       Opening Rate
      2004

       Closing Rate
      2004

      Swedish Krona 7.6466(1)6.6231
      British Pound .5600 .5218
      Canadian Dollar 1.2970 1.2132

      (1)
      Represents the exchange rate at April 16, 2004 as this is the date that White Mountains acquired Sirius, whose functional currency is the Swedish krona.

       

       

      Opening Rate

       

      Closing Rate

       

      Opening Rate

       

      Closing Rate

       

      Currency

       

      2006

       

      2006

       

      2005

       

      2005

       

      Swedish Krona

       

      7.9603

       

      6.8640

       

      6.6231

       

      7.9603

       

      British Pound

       

      .5798

       

      .5088

       

      .5218

       

      .5798

       

      Canadian Dollar

       

      1.1647

       

      1.1603

       

      1.2132

       

      1.1647

       

      Earnings (loss) per share

      Basic earnings (loss) per share amounts are based on the weighted average number of Common Shares outstanding.common shares outstanding excluding unearned restricted common shares (“Restricted Shares”), which are being fully expensed over the vesting period and were anti-dilutive for all periods presented. Diluted earnings per share amounts are based on the weighted average number of Common Sharescommon shares and the net effect of potentially dilutive Common Sharescommon shares outstanding, calculated using



      based on the treasury stock method. The following table outlines the Company'sCompany’s computation of earnings (loss) per share for the years ended December 31, 2004, 20032006, 2005 and 2002:2004:

       
       Year Ended December 31,
       
       
       2004
       2003
       2002
       
      Basic earnings per share numerators (in millions):          
      Net income before accounting changes and extraordinary items $238.2 $280.6 $80.8 
      Redemption value adjustment and dividends on Convertible Preference Shares    (49.5) (19.4)
        
       
       
       
      Net income before accounting changes and extraordinary items available to common shareholders $238.2 $231.1 $61.4 
        
       
       
       
       Cumulative effect of changes in accounting principles      660.2 
       Extraordinary income items  180.5    7.1 
        
       
       
       
      Net income available to common shareholders $418.7 $231.1 $728.7 
        
       
       
       
      Diluted earnings per share numerators (in millions):          
      Net income before accounting changes and extraordinary items available to common shareholders $238.2 $231.1 $61.4 
       Other effects on diluted earnings(1)  (.9) (2.6) (.1)
        
       
       
       
      Net income before accounting changes and extraordinary items available to common shareholders $237.3 $228.5 $61.3 
        
       
       
       
       Cumulative effect of changes in accounting principles      660.2 
       Extraordinary income items  180.5    7.1 
        
       
       
       
      Adjusted net income available to common shareholders $417.8 $228.5 $728.6 
        
       
       
       
      Earnings per share denominators (in thousands):          
      Basic earnings per share denominator (average Common Shares outstanding)  9,902  8,725  8,225 
      Average outstanding dilutive warrants to acquire Common Shares(2)  565  944  799 
        
       
       
       
      Diluted earnings per share denominator  10,467  9,669  9,024 
        
       
       
       
      Basic earnings per share (in dollars):          
      Net income before accounting changes and extraordinary items $24.05 $26.48 $7.47 
       Cumulative effect of changes in accounting principles      80.27 
       Extraordinary income items  18.23    .87 
        
       
       
       
      Net income $42.28 $26.48 $88.61 
        
       
       
       
      Diluted earnings per share (in dollars):          
      Net income before accounting changes and extraordinary items $22.67 $23.63 $6.80 
       Cumulative effect of changes in accounting principles      73.16 
       Extraordinary income items  17.25    .79 
        
       
       
       
      Net income $39.92 $23.63 $80.75 
        
       
       
       

       

       

      Year Ended December 31,

       

       

       

      2006

       

      2005

       

      2004

       

      Basic earnings per share numerators (in millions):

       

       

       

       

       

       

       

      Income before extraordinary item

       

      $

      651.8

       

      $

      290.1

       

      $

      238.2

       

      Extraordinary item - excess of fair value of acquired net assets over cost

       

      21.4

       

       

      180.5

       

      Net income

       

      $

      673.2

       

      $

      290.1

       

      $

      418.7

       

      Diluted earnings per share numerators (in millions):

       

       

       

       

       

       

       

      Income before extraordinary item

       

      $

      651.8

       

      $

      290.1

       

      $

      238.2

       

      Other effects on diluted earnings (1)

       

       

      (3.5

      )

      (0.9

      )

      Income before extraordinary item

       

      $

      651.8

       

      $

      286.6

       

      $

      237.3

       

      Extraordinary item - excess of fair value of acquired net assets over cost

       

      21.4

       

       

      180.5

       

      Adjusted net income

       

      $

      673.2

       

      $

      286.6

       

      $

      417.8

       

      Basic earnings per share denominators (in thousands):

       

       

       

       

       

       

       

      Average common shares outstanding during the period

       

      10,780

       

      10,774

       

      9,916

       

      Average unearned restricted common shares

       

      (11

      )

      (13

      )

      (14

      )

      Basic earnings per share denominator

       

      10,769

       

      10,761

       

      9,902

       

      Diluted earnings per share denominator (in thousands):

       

       

       

       

       

       

       

      Average common shares outstanding during the period

       

      10,780

       

      10,774

       

      9,916

       

      Average unearned restricted shares (2)

       

       

      (13

      )

      (14

      )

      Average outstanding dilutive options and warrants to acquire common shares (3)

       

      23

       

      33

       

      565

       

      Diluted earnings per share denominator

       

      10,803

       

      10,794

       

      10,467

       

      Basic earnings per share (in dollars):

       

       

       

       

       

       

       

      Income before extraordinary item

       

      $

      60.52

       

      $

      26.96

       

      $

      24.05

       

      Extraordinary item -excess of fair value of acquired net assets over cost

       

      1.99

       

       

      18.23

       

      Net income

       

      $

      62.51

       

      26.96

       

      $

      42.28

       

      Diluted earnings per share (in dollars):

       

       

       

       

       

       

       

      Income before extraordinary item

       

      $

      60.33

       

      26.56

       

      $

      22.67

       

      Extraordinary item - excess of fair value of acquired net assets over cost

       

      1.99

       

       

      17.25

       

      Net income

       

      $

      62.32

       

      26.56

       

      $

      39.92

       


      (1)

      The diluted earnings per share numeratorsnumerator for certain periods presented includethe year ended December 31, 2005 has been adjusted to exclude an adjustmentincome statement credit associated with outstanding options to acquire common shares (see footnote 3 below). The diluted earnings per share numerator for the year ended December 31, 2004 has been adjusted to exclude a portion of White Mountains'Mountains’ equity in earnings related to its investment in the common shares offrom Montpelier which is reflective of dilution in Montpelier's earningsRe brought about by outstanding warrants and options to acquire common shares of Montpelier Re that are in-the-money. As of March 31, 2004, White Mountains changed its method of accounting for thisits investment in Montpelier Re from equity accounting to

        fair value, therefore, this equity adjustment is not applicable to periods beginning after March 31, 2004.such date.

      (2)

                   Restricted Shares cliff vest on a stated anniversary date. In accordance with the adoption of FAS No. 123(R), the diluted earnings per share denominator adjustment is limited to unearned Restricted Shares measured as if such Restricted Shares are earned ratably.

      (3)The diluted earnings per share denominatorsdenominator for the yearsyear ended December 31, 2006 includes the effects of options to acquire 32,596 common shares at an average strike price of $154.05 per common share. The diluted earnings per share denominator for the year ended December 31, 2005 includes the effects of options to acquire 42,910 common shares at an average strike price of $145.33 per common share. The diluted earnings per share denominator for the year ended December 31, 2004 2003 and 2002 includeincludes the dilutive effects of average outstanding warrants to acquire 852,678 1,724,200 and 1,724,200 Common Shares, respectively,common shares at aan average strike price of $173.99 per Common Share.common share. The warrants were fully exercised on June 29, 2004. The diluted earnings per share denominators presented exclude the anti-dilutive effects of outstanding Options and unearned restricted Common Shares outstanding that are being fully expensed over the vesting period.

      2004, therefore this adjustment is not applicable for periods after such date.


      Recently Adopted Changes in Accounting Principles

      Variable Interest Entities

      Variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an entity has a variable interest, or a combination of variable interests, that will absorb a majority of the VIE’s expected losses, receive a majority of the VIE’s expected residual returns, or both. The entity with a controlling financial interest is the primary beneficiary and consolidates the VIE.

      In January 2003,accordance with the Financial Accounting Standards Board ("FASB"(“FASB”) issued Interpretation No. 46, "Consolidation46-R, “Consolidation of Variable Interest Entities" ("Entities” (“FIN 46"46-R”), White Mountains consolidates VIEs for which addresses consolidation issues surrounding special purpose entities and certain other entities, collectively termed variable interest entities ("VIE"), to which previous accounting guidance on consolidation doesit is the primary beneficiary. White Mountains determines whether or not apply. A VIEit is an entity in which the equity investors do not have the characteristics of a controlling interest or do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. Under FIN 46, the primary beneficiary of a VIE is required to consolidateby first performing a qualitative analysis of the VIE that includes a review of, among other factors, its capital structure, contractual terms, which interest creates or absorbs variability, related party relationships and the design of the VIE. Where qualitative analysis is not conclusive, White Mountains performs a quantitative analysis to calculate whether White Mountains’ financial interest in its financial statements. The primary beneficiarythe VIE is an entity that haslarge enough to absorb a variable interest that will absorb the majority of the VIE'sVIE’s expected losses, if they occur, receive a majority of the entity'sVIE’s expected residual returns, if they occur, or both. White Mountains adopted the disclosure provisions of FIN 46 beginning with its December 31, 2002 Form 10-K and its consolidation provisions as of March 31, 2004. See Note 15.


      Mandatorily Redeemable Preferred Stock

              In July 2003, White Mountains adopted the provisions of SFAS No. 150, "Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity" ("SFAS 150") and it subsequently adopted FASB Staff Position No. 150-3 ("FSP 150-3") in November 2003. SFAS 150, among other things, required an issuer of mandatorily redeemable financial instruments to classify such instruments as a liability and to initially measure the liability at its fair value. Subsequently, these instruments are to be measured at their present value, using the interest rate implicit at the inception of the contract. In addition, all future dividends paid to holders of those instruments, as well as any accretion related to those instruments, are to be reflected as interest expense. FSP 150-3 was released by the FASB in November 2003 and it indefinitely deferred the fair value measurement provisions of SFAS 150 for certain mandatorily redeemable noncontrolling interests. However, the presentation provisions of SFAS 150 are still applicable to those instruments.

      White Mountains has two classes of mandatorily redeemable preferred stock of subsidiaries which were previously classified as minority interests, that fell within the scope of SFAS 150 and are considered noncontrolling interests under FSP 150-3. Upon adoption of SFAS 150 in 2003, White Mountains reclassified these instruments from mezzanine equity toand have been recorded as liabilities at their historical carrying values. In addition, beginning in the third quarter of 2003, all dividendsDividends and accretion on White Mountains'Mountains’ mandatorily redeemable preferred stock have been recorded as interest expense. See(See Note 10.10).

      Minority Interest


      Minority interests consist of the ownership interests of noncontrolling shareholders in consolidated subsidiaries,Stock-Based Compensation
      and are presented separately on the balance sheet. The portion of income attributable to minority interests is presented net of related income taxes in the statement of income and comprehensive income. The change in unrealized investment gains, foreign currency translation and the change in the fair value of the cash flow hedge presented in accumulated other comprehensive income is net of the minority interest portion.

      Recently Adopted Changes in Accounting Principles

      Share-Based Compensation

      In December 2002,2004, the FASBFinancial Accounting Standards Board issued SFAS No. 148, "Accounting for Stock-Based Compensation—Transition and Disclosure" ("SFAS 148"Statement of Financial Accounting Standard (“FAS”), an amendment to SFAS No. 123 "Accounting for Stock-Based Compensation" ("SFAS 123"(Revised), “Share-Based Payment” (“FAS 123R”). Among other things, SFAS 148 amends the disclosure provisions



      of SFAS, which is a revision to FAS 123 to require prominent annual disclosure about the effects on reported net income in the Summary of Significant Accounting Policies and also requires disclosure about these effects in interim financial statements. Accordingly, the Company has adopted the applicable disclosure requirements of this statement for year-end and interim reporting.

              White Mountains' share-based compensation plans, consisting primarily of performance shares with limited use of restricted Common Share awards ("Restricted Shares") and a one-time grant of incentive stock options to acquire Common Shares ("Options"), are designed to maximize shareholder value over long periods of time by aligning the financial interests of its management with those of its owners. Performance shares are payable only upon achievement of pre-defined business goals and are valued based on the market value of Common Shares at the time awards are earned. Performance shares are typically paid in cash, though they may be paid in Common Shares at the election of the Board of Directors, or may be deferred in accordance with the terms of the Company's deferred compensation plans.

              White Mountains expenses the full cost of all its share-based compensation, including its outstanding Options. White Mountains' share-based compensation plans, consisting primarily of performance shares, are designed to maximize shareholder value over long periods of time by aligning the financial interests of its management with those of its owners. See Note 9. White Mountains accounts for these plans under the recognition and measurement principles ofsupersedes Accounting Principles Board Opinion No. 25, ("APB 25"), "Accounting“Accounting for Stock Issued to Employees"Employees” (“APB 25”), and related interpretations, including FASB Interpretation No. 28, "Accounting“Accounting for Stock Appreciation Rights and Other Variable Stock Options or Award Plans ("Plans” (“FIN 28"28”). The accounting treatmentEffective January 1, 2006, White Mountains adopted FAS 123R to account for White Mountains' Restricted Shareits share-based compensation under the modified prospective method of adoption. Under this method of adoption, FAS 123R applies to new grants of share-based awards, under APB 25 is identical toawards modified after the method prescribed by SFAS 123, wherebyeffective date and the Restricted Shares are valued based uponremaining portion of the fair value of the unvested awards at the dateadoption date. The unvested portion of issuanceWhite Mountains incentive stock options (“Incentive Options”), restricted common share awards (“Restricted Shares”) and charged to compensation expense ratably over the service period. Compensation expense charged to earnings for Restricted Shares was $2.0 million, $5.8 million and $16.2 million for the years ended December 31, 2004, 2003 and 2002, respectively. The accounting treatment for White Mountains' performance share awards outstanding as of January 1, 2006, as well as new awards, are subject to the fair value measurement and recognition requirements of FAS 123R.

      Prior to adoption of FAS 123R, White Mountains accounted for performance shares, Restricted Shares and Incentive Options under the recognition and measurement principles of APB 25 is also identical toand FIN 28, and adopted the method prescribed by SFAS 123, wherebydisclosure provisions of FAS 123. Under APB 25 and FIN 28, the liability for the compensation cost for performance share awards iswas measured each period based upon the current market price of the underlying Common Shares. During 2004, 2003 and 2002,common shares. The compensation cost recognized for White Mountains recorded compensation charges of $215.0 million, $206.6 million and $63.5 million, respectively, for outstanding performance shares.

              In 2000, the Company issued a one-time award of 81,000 Options. The Options were issued at an exercise price equal to the marketMountains’ Restricted Shares under APB 25 was based upon fair value of the underlying Common Shares on February 27, 2000 (the grant date).award at the date of issuance and was charged to compensation expense ratably over the service period. Forfeitures were recognized as they occurred. Upon adoption of FAS 123R, an estimate of future forfeitures was incorporated into the determination of the compensation cost for performance shares and Restricted Shares. The effect of this change was immaterial.


      White Mountains’ Incentive Options have an escalating exercise price escalatesand vest on a straight-linepro rata basis by 6% per annum over the ten-year life of the Options.service period. As a result, the Company'sCompany’s outstanding Incentive Options arewere accounted for as variable optionsawards under FIN 28, with compensation expense charged to earnings over the service period based on the intrinsic value of the underlying Common Shares. Compensationcommon shares and with forfeitures recognized as they occurred. Upon adoption of FAS 123R, the grant date fair value of the awards as originally disclosed for FAS 123, adjusted for estimated future forfeitures, became the basis for recognition of compensation expense charged to earnings for Options was $9.0 million, $7.4 million and $.7 million for the years ended December 31, 2004, 2003 and 2002, respectively. At December 31, 2004, the Company had 46,530 Options outstanding (10,530 of which were exercisable) with a weighted average exercise price of $140.80 per Common Share. During the year ended December 31, 2004, 4,035 Options were exercised at an average exercise price of $139.58 per Common Share.Incentive Options.

              White Mountains has adopted the disclosure-only provisions of SFAS 123 with respect to its outstanding Options and Restricted Shares. The following table illustrates the pro forma effect on net income and earnings per share for each period indicatedthe years ended December 31, 2005 and 2004 as if the Company had applied the fair value recognition provisions of SFASFAS 123 to its employee Option incentive compensation program. The effects of Restricted Share and performance share expense are not included below because theIncentive Options at those times.


       

      Year Ended December 31,

       

      Millions, except per share amounts

       

      2005

       

      2004

       

      Net income, as reported

       

      $

      290.1

       

      $

      418.7

       

      Incentive Option expense (income) included in reported net income

       

      (3.5

      )

      9.0

       

      Incentive Option expense determined under fair value based method

       

      (.1

      )

      (.1

      )

      Net income, pro forma

       

      $

      286.5

       

      $

      427.6

       

      Earnings per share:

       

       

       

       

       

      Basic - as reported

       

      $

      26.96

       

      $

      42.28

       

      Basic - pro forma

       

      26.63

       

      43.18

       

      Diluted - as reported

       

      26.56

       

      39.92

       

      Diluted - pro forma

       

      26.56

       

      40.77

       


      accounting treatment that the Company follows under APB 25 is identical to the fair value accounting prescribed by SFAS 123 for these instruments.

       
       Year Ended December 31,
       
      Millions, except per share amounts

       
       2004
       2003
       2002
       
      Net income, as reported $418.7 $280.6 $748.1 
       Add: Option expense included in reported net income  9.0  7.4  .7 
       Deduct: Option expense determined under fair value based method  (.1) (.1) (.1)
        
       
       
       
      Net income, pro forma $427.6 $287.9 $748.7 
        
       
       
       
      Earnings per share:          
       Basic—as reported $42.28 $26.48 $88.61 
       Basic—pro forma  43.18  27.32  88.67 
       Diluted—as reported  39.92  23.63  80.75 
       Diluted—pro forma  40.77  24.39  80.81 
        
       
       
       


      Business Combinations

              In 2001, White Mountains adopted the provisions of SFAS No. 141, "Business Combinations", which required the recognition of all existing deferred credits (defined as the excess of fair value of acquired assets over cost) arising from business combinations prior to July 1, 2001 through the income statement as a change in accounting principle on the first day of the fiscal year beginning after December 15, 2001. In accordance with SFAS 141, White Mountains recognized its entire December 31, 2001 unamortized deferred credit balance of $682.5 million on January 1, 2002 as a cumulative effect of a change in accounting principle. SFAS 141 also requires deferred credits arising from business combinations on or after July 1, 2001 to be immediately recognized through the income statement as an extraordinary gain. See Note 2.Hybrid Financial Instruments

      On January 1, 2002, White Mountains adopted the provisions of SFAS No. 142, "Goodwill and Other Intangible Assets", which calls for the amortization of existing and prospective goodwill (defined as the excess of cost over the fair value of acquired assets) only when the assets acquired are deemed to have been impaired rather than systematically over a perceived period of benefit. SFAS 142 specifically defines impairment as the condition that exists when the carrying amount of goodwill exceeds its implied fair value and requires goodwill to be evaluated for impairment periodically. Prior to the issuance of SFAS 142, little guidance existed as to how to determine and measure goodwill impairment. As a result of the issuance of SFAS 142, White Mountains performed a discounted cash flow analysis to determine the fair value of the net assets supporting its unamortized goodwill relating primarily to its 2000 acquisition of substantially all the reinsurance operations of Risk Capital Reinsurance Company ("Risk Capital") and recognized a transitional impairment loss of $22.3 million on January 1, 2002 as a cumulative effect of a change in accounting principle.


      Employer's Disclosures about Pensions and Other Post Retirement Benefits

              In December 2003,February 16, 2006, the FASB issued SFASFAS No. 132 (Revised 2003), "Employer's Disclosures about Pensions155, “Accounting for Certain Hybrid Instruments, an amendment to Statement Nos. 133 and Other Post Retirement Benefits," ("SFAS 132(R)"140” (“FAS 155”). This statement retainsThe Statement eliminates the disclosure requirements contained in SFAS No. 132, "Employers' Disclosures about Pensions and Other Postretirement Benefits," which it replaces. Additionally, SFAS 132(R) requires more detailed disclosures about pension plan assets, benefit obligations, cash flows, benefit costs and related information. White Mountains has includedrequirement to bifurcate financial instruments with embedded derivatives if the disclosures required by SFAS 132(R)holder of the instrument elects to account for the years ended December 31, 2004 and 2003. See Note 8.




      Other-Than-Temporary Impairment Disclosures

              In Decemberentire instrument on a fair value basis. Changes in fair value are recorded as realized gains. The fair value election may be applied upon adoption of 2003, White Mountains adopted FASB Emerging Issues Task Force ("EITF") Issue 03-01, "The Meaning of Other-Than-Temporary Impairment and Its Applicationthe statement for hybrid instruments that had been bifurcated under FAS 133 prior to Certain Investments" ("EITF 03-01"). EITF 03-01 provides new disclosure requirements for other-than-temporary impairments on debt and equity investments. Investors are required to disclose quantitative information about: (i) the aggregate amount of unrealized losses, and (ii) the aggregate related fair values of investments with unrealized losses, segregated into time periods during which the investment has been in an unrealized loss position of less than 12 months and greater than 12 months. In addition, investors are required to disclose the qualitative information that supports their conclusion that the impairments noted in the quantitative disclosures are not other-than temporary. See Note 5.

      Recently Issued Accounting Pronouncements

              In December 2004, the FASB issued SFAS No. 123 (Revised 2004), "Share-Based Payment," "(SFAS 123(R)". SFAS 123(R) is a revision of FASB Statement 123, "Accounting for Stock-Based Compensation" and supersedes APB Opinion No. 25, "Accounting for Stock Issued to Employees," and its related implementation guidance.adoption. The Statement focuses primarily on accountingis effective for transactions in which an entity obtains employee services in share-based payment transactions. SFAS No. 123 (R) requires a public entity to measure the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. That cost is to be recognized over the period during which an employee is required to provide service in exchange for the award. This statement is effectivefiscal years commencing after September 15, 2006 with early adoption permitted as of the beginning of an entity’s fiscal year.

      White Mountains adopted FAS 155 effective January 1, 2006. See Convertible bonds section of this note for discussion of effect of adoption.

      Defined Benefit Pension and Other Postretirement Plans

      In September 2006, the first interim or annual reporting periodFASB issued Statement of Financial Accounting Standards No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans (“FAS 158”) which amends FASB Statement Nos. 87, 88, 106 and 132(R). The Statement requires an employer that begins after June 15, 2005sponsors a defined benefit plan to recognize the funded status of a benefit plan, measured as the difference between plan assets at fair value and the Company will adoptprojected benefit obligation (for defined benefit pension plans) or the standardaccumulated benefit obligation (for other postretirement benefit plans) in its statement of financial position. The Statement also requires recognition of amounts previously deferred and amortized under FAS 87 and FAS 106 in other comprehensive income in the third quarterperiod in which they occur. Under the new Statement, plan assets and obligations must be measured as of the fiscal 2005.year end. The recognition provisions of the Statement are effective for fiscal years ending after December 15, 2006. The measurement provisions of the Statement are effective for fiscal years ending after December 15, 2008. White Mountains doesrecognized an increase to ending accumulated other comprehensive income of $4.1 million upon adoption of the recognition provisions of FAS 158 at December 31, 2006.

      F-15




      Recent Accounting Pronouncements

      Fair Value Measurements

      In September 2006, the FASB issued Statement of Financial Accounting Standards No. 157, Fair Value Measurements (“FAS 157”). The Statement provides a revised definition of fair value and guidance on the methods used to measure fair value. The Statement also expands financial statement disclosure requirements for fair value information. The Statement establishes a fair value hierarchy that distinguishes between assumptions based on market data from independent sources (“observable inputs”) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (“unobservable inputs”). The fair value hierarchy in FAS 157 prioritizes inputs within three levels. Quoted prices in active markets have the highest priority (Level 1) followed by observable inputs other than quoted prices (Level 2) and unobservable inputs having the lowest priority (Level 3). The guidance in FAS 157 is applicable to derivatives as well as other financial instruments measured at fair value and nullifies the guidance in EITF 02-3, FAS 133 and FAS 155 that provided for the deferral of gains at the date of initial measurement. The Statement is effective for financial statements issued for fiscal years beginning after November 15, 2007, with earlier application allowed for entities that have not expect a materialissued financial statements in the fiscal year of adoption. White Mountains has not yet determined the effect of adoption on its financial condition, results of operations or cash flowsflows.

      Accounting for Uncertainty in Income Taxes

      In July 2006, the FASB issued FASB Interpretation No. 48, “Accounting for Uncertainty in Income Taxes” (“FIN 48”). FIN 48 is an interpretation of FAS 109, “Accounting for Income Taxes.” The Interpretation prescribes when the benefit of a given tax position should be recognized and how it should be measured. FIN 48 also requires additional disclosures. Under the new guidance, recognition is based upon whether or not a company determines that it is more likely than not that a tax position will be sustained upon examination based upon the technical merits of the position. In evaluating the more-likely-than-not recognition threshold, a company should presume that the tax position will be subject to examination by a taxing authority with full knowledge of all relevant information. If the recognition threshold is met, then the tax position is measured at the largest amount of benefit that is more than 50% likely of being realized upon ultimate settlement. FIN 48 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. The Interpretation is effective for fiscal years beginning after December 15, 2006. White Mountains expects the effect of adoption to be modest and to consist of reclassification of certain income tax-related liabilities in our statement of financial position and an immaterial effect on the balance of retained earnings. White Mountains does not expect the adoption to have a material effect on its results of operations or cash flows.


      NOTE 2. Significant Transactions

      Mutual Service Casualty

      On December 22, 2006, White Mountains Re completed its acquisition of Mutual Service Casualty Insurance Company (“Mutual Service Casualty”), a runoff insurer formerly affiliated with Country Insurance & Financial Services. As part of a sponsored demutualization and conversion to a stock company, Mutual Service Casualty has been renamed Stockbridge Insurance Company (“Stockbridge”). White Mountains Re paid approximately $33.6 million for Stockbridge and recorded an after-tax extraordinary gain of $21.4 million, which represents the excess of fair value of acquired assets over the purchase price. The fair value of net assets acquired were $55.1 million, including $81.0million of cash and investments, $55.5 million of reinsurance recoverables, $12.2 million of deferred tax assets, $91.2 million of loss and LAE reserves and $2.3 million of deferred tax liabilities.

      OneBeacon

      On November 14, 2006, in connection with the OneBeacon Offering, White Mountains sold 27.6 million common shares, or 27.6%, of its subsidiary OneBeacon Ltd. for net proceeds of $650.3 million in cash. As a result of the sale, White Mountains recorded a gain of $171.3 million, which represents the excess of the offering proceeds over 27.6% of the book value of OneBeacon at the time of the sale.


      Main Street America

      On October 31, 2006, White Mountains’ investment in Main Street America Holdings, Inc. (“MSA”) was restructured. White Mountains received a $70 million cash dividend from MSA, following which White Mountains sold its 50% common stock investment in MSA to Main Street America Group, Inc. (“the MSA Group”) for (i) $70.0 million in 9.0% non-voting cumulative perpetual preferred stock of the MSA Group, and (ii) $24.5 million, or 4.9%, of the common stock of the MSA Group. These transactions resulted in a net after tax realized gain of $8.5 million.

      Sirius America

      On August 3, 2006, White Mountains Re sold its wholly-owned subsidiary, Sirius America, to an investor group for $138.8 million in cash, which was $16.9 million above the book value of Sirius America at the time of the sale. Sirius America is a U.S.-based insurer focused on primary insurance programs that was acquired as part of the Sirius Acquisition (defined below).

      As part of the transaction, White Mountains acquired an equity interest of approximately 18% in the acquiring Sirius
      entity, Delos, and
      accounts for Delos under the equity method. White Mountains recognized a gain of $14.0 million($9.1 million after tax) on the sale through other revenues and has deferred $2.9 million ($1.9 million after tax) of the gain related to its remaining equity interest in Delos (See Note 14).

      National Farmers Union Property and Casualty Company

      On September 30, 2005, OneBeacon sold National Farmers Union Property and Casualty Company (“NFU”) to QBE Insurance Group for $138.3 million in cash and recognized a gain of approximately $26.2 million ($21.7 million after-tax) on the sale through other revenues.

      Sirius

      On April 16, 2004, White Mountains acquired Sirius from ABB Ltd. (the "Sirius Acquisition") for SEK 3.27 billion (approximately $427.5 million based upon the foreign exchange spot rate at the date of acquisition), which includesincluded $10.5 million of expenses incurred in connection with the acquisition.acquisition. The principal companies acquired were Sirius International, Insurance Corporation ("Sirius International"), Sirius America Insurance Company ("Sirius America") and Scandinavian Reinsurance Company Ltd. ("Scandinavian Re").Re. Sirius International is domiciled in Sweden and has offices in Belgium, Hamburg, London, Singapore, Stockholm and Zurich. Sirius America is a U.S.-based insurer focused on primary insurance programs that was acquired by Folksamerica as part of the transaction. Scandinavian Re is a reinsurance company that has been in run-off since 2002.

      The Sirius Acquisition was accounted for byunder the purchase method of accounting and, therefore, the identifiable assets and liabilities of Sirius were recorded by White Mountains at their fair values on April 16, 2004. The process of determining the fair value of such assets and liabilities acquired was as follows: (1) the purchase price of Sirius was preliminarily allocated to the acquired assets and liabilities, based on their respective estimated fair values at April 16, 2004; (2) the excess of the estimated fair value of acquired net assets over the purchase price was used to reduce the estimated fair values of all non-current, non-financial assets acquired to zero; and (3) the remaining excess of the estimated fair value of net assets over the purchase price was recorded as an extraordinary gain.


      The fair value of identifiable assets and liabilities acquired on April 16, 2004 were as follows (in millions):

      Fair value of assets acquired

       

      $

      3,306.9

       

      Fair value of liabilities acquired

       

      2,768.0

       

       

       

       

       

      Fair value of net assets acquired

       

      538.9

       

       

       

       

       

      Total purchase price, including expenses

       

      (427.5

      )

       

       

       

       

      Resulting extraordinary gain

       

      $

      111.4

       

       

      Significant assets and liabilities acquired through Sirius included $1,851.9 million of cash and investments, $790.1$790.1 million of funds held by ceding companies, $286.2 million of reinsurance recoverable on paid and unpaid losses, $245.8 million of insurance and reinsurance balances receivable, $1,612.7 million of loss and loss adjustment expense reserves, $432.2 million of reserves for structured settlements, $276.5 million of unearned insurance premiums and $289.4 million of deferred tax liabilities.

      Supplementalunaudited pro forma condensed combined income statement information for the year ended December 31, 2004, which assumes that the Sirius Acquisition had occurred as of January 1, 2004 and for the year ended December 31, 2003, which assumes the Sirius Acquisition had occurred as of January 1, 2003, follows:

       
       Pro Forma Twelve Months Ended December 31, 2004
       Pro Forma Twelve Months Ended December 31, 2003
       
       (Unaudited)
      Millions, except per share amounts

      Total revenues $4,699.7 $4,408.3
      Income before extraordinary items $273.4 $262.0
      Net income $453.9 $347.5
      Earnings per share:      
       Pro forma net income—basic $45.83 $34.15
       Pro forma net income—diluted $43.28 $30.55
        
       

       

      (Unaudited)

       

      Pro Forma
      Twelve Months
      Ended
      December 31,

       

      Millions, except per share amounts

       

      2004

       

      Total revenues

       

      $

      4,699.7

       

       

       

       

       

      Income before extraordinary items

       

      $

      273.4

       

       

       

       

       

      Net income

       

      $

      453.9

       

       

       

       

       

      Earnings per share:

       

       

       

       

      Pro forma net income - basic

       

      $

      45.83

       

      Pro forma net income - diluted

       

      $

      43.28

       

      The unaudited pro forma information presented above for the yearsyear ended December 31, 2004 and 2003 has been suppliedfor comparative purposes only and does not purport to reflect the actual results that would have been reported had theSirius Acquisition been consummated at January 1, 2004 and 2003, respectively.2004. Additionally, such pro forma financial information does not purport to represent results that may occur in the future.


      Symetra

      Symetra

      On August 2, 2004, White Mountains, Berkshire Hathaway Inc. ("Berkshire"(“Berkshire”) and several other private investors capitalized Symetra Financial Corporation ("Symetra") in order to purchase the life and investments operations of Safeco Corporation for $1.35 billion. The acquired companies which are now operating under the Symetra brand, focus mainly on group insurance, individual life insurance, structured settlements and retirement services. Symetra had an initial capitalization of approximately $1.4 billion, consisting of $1,065 million of common equity and $315 million of bank debt. White Mountains invested $194.7 million in Symetra in exchange for 2.0 million common shares of Symetra. In addition, White Mountains and Berkshire each received warrants to acquire an additional 1.1 million common shares of Symetra at $100 per share. White Mountains owns approximately 19% of the



      outstanding common shares of Symetra, which are accounted for under the equity method, and approximately 24% of Symetra on a fully-converted basis including the warrants, which are accounted for under the provisions of SFAS No. 133, "Accounting for Derivative Instruments and Hedging Activities" ("FAS 133").133. Three White Mountains designees serve on Symetra'sSymetra’s eight member board of directors.

      White Mountains recorded its initial investment in Symetra in accordance with GAAP by allocating the $194.7 million purchase price between the common shares and the warrants. The allocation was determined by recording the warrants at their fair value of $35.4 million, with the remaining $159.3 million allocated to the common shares. White Mountains then recognized an extraordinary gain of $40.7 million, representing the difference between the initial cost of the common shares and the amount of White Mountains'Mountains’ equity in the underlying net assets of Symetra, as required by APB 18, "The “The Equity Method of Accounting for Investments in Common Stock"Stock”.

      Sierra Group


      Sierra

      On March 31, 2004, Folksamerica acquired the Sierra Insurance Group companies (the "Sierra Group"“Sierra Group”), consisting of California Indemnity Insurance Company and its three subsidiaries, from Nevada-based Sierra Health Services, Inc. Folksamerica paid $76.2 million for the Sierra Group, which included $14.2 million in cash and a $62.0$62.0 million purchase note (see Note 6), of which. $58.0 million willof the purchase note may be adjusted over its six-year term to reflect favorable or adverse loss reserve development on the acquired reserve portfolio and run-off of remaining policies in force (mainly workers compensation business), as well as certain other balance sheet protections. The acquired companies'companies’ net assets at the time of the close were $84.8 million, including $270.3 million of investments, $174.4 million of reinsurance balances recoverable, $406.9 million of loss and loss adjustment expense reserves and $25.1 million of unearned premium.premiums. The acquisition resulted in an $8.6 million extraordinary gain, which White Mountains recognized in the first quarter of 2004.


      Tryg-Baltica


      Tryg-Baltica

      On November 11, 2004, Sirius International acquired 100% of Denmark-based Tryg-Baltica Forsikring, internationalt forsikringsselskab A/S ("Tryg Baltica"(“Tryg-Baltica”). Under the terms of the agreement, Sirius paid approximately DKK 316.3 million ($57.7 million) and an additional $0.3 million of expenses incurred in connection with the acquisition.. Following the closing, White Mountains Re placed Tryg-Baltica into run-off, though it is anticipated that selectcertain business will bewas renewed by Sirius International. White Mountains Re did not acquire any infrastructure or employees and will managemanages the company'scompany’s run-off administration. The acquired companies'companies’ net assets at closing were $77.5 million, including $144.3 million of cash and investments, $86.7 million of receivables, $20.8 million of deposits with insurance companies, $150.8 million of loss and LAE reserves and $36.9 million of unearned insurance premiums. The acquisition resulted in a $19.8 million extraordinary gain, which White Mountains recognized in the fourth quarter of 2004.


      Other Acquisitions and Dispositions

      On September 29, 2006, OneBeacon transferred certain assets and the right to renew existing policies of its Agri division to QBE for $32.0 million in cash and recorded a gain of $30.4 million on the sale through other revenues.

      On September 30, 2005, White Mountains Re sold one of its subsidiaries, California Indemnity Insurance Company, for total proceeds of $19.8 million, $19.3 million of which was paid in cash, and recognized a gain of approximately $5.0 million ($3.3 million after-tax) on the sale through other revenues.

      On August 2, 2005, OneBeacon sold one of its subsidiaries, Traders and Pacific Insurance Company (“TPIC”), to Endurance Reinsurance for $23.4 million in cash and recognized a gain of approximately $8.0 million ($5.2 million after-tax) on the sale through other revenues.

      During the fourth quarter of 2004, OneBeacon sold two of its subsidiaries, Potomac Insurance Company of Illinois ("Potomac") for $21.7 million and Western States Insurance Company, ("Western States"), as well as its boiler inspection service business, for $15.1 million and recognized combined gains on the sales of $22.1 million through other revenues.

      During the third quarter of 2004, OneBeacon entered into an agreement to sell the renewal rights to most of its pre-Atlantic Mutual (defined below) New York commercial business to Tower Insurance Group. The transaction, effective with December 1, 2004 renewals, will impact approximately



      $110.0impacted $110.0 million of premiums. OneBeacon will retainretained the commercial business acquired from Atlantic Mutual (defined below).Mutual.

      On March 31, 2004, OneBeacon acquired Atlantic Specialty Insurance Company ("(“Atlantic Specialty"Specialty”), a subsidiary of Atlantic Mutual Insurance Company ("(“Atlantic Mutual"Mutual”), and the renewal rights to Atlantic Mutual's Mutual’s segmented commercial insurance business, including the unearned premiums on the acquired book (the "Atlantic“Atlantic Specialty Transaction"Transaction”). The overall gross written premium for this book of business totalstotaled approximately $400$404 million. Under the terms of the agreement, OneBeacon will pay Atlantic Mutual a renewal commission on the premiums renewed. In connection with its acquisition of Atlantic Specialty, OneBeacon paid $30.1 million in cash and issued a $20.0 million note to the seller. See Note 6.

      During the first quarter of 2004, White Mountains purchased additional warrants to acquire 2,390,786 common shares of Montpelier Re Holdings Ltd. ("Montpelier") from an existing warrant holder for $54.1 million in cash. Also during the first quarter of 2004, White Mountains sold 4.5 million common shares of Montpelier Re to third parties for net proceeds of $155.3 million. As a result of this sale, as well as changes to the composition of the Board of Directors of both Montpelier Re and White Mountains, White Mountains changed the method of accounting for its remaining common share investment in Montpelier Re as of March 31, 2004 from an equity method investment in an unconsolidated affiliate to a common equity security, which is classified as available for sale and carried at fair value. During the third quarter of 2006, White Mountains sold an additional 5.4 million shares of its common share investment in Montpelier Re to third parties, thereby reducing the total number of Montpelier Re common shares owned by White Mountains to 0.9 million. See Note 5.

      In January 2004, Folksamerica sold Peninsula Insurance Company to the Donegal Group for $23.3 million, or 107.5% of its GAAP book value, resulting in a pretaxpre-tax gain of $2.1 million whichthat White Mountains recognized in the first quarter of 2004.

              Effective October 1, 2003, Folksamerica acquired renewal rights to the property and casualty treaty reinsurance business of CNA Reinsurance ("CNA Re"), a division of CNA Financial Corporation. Under the terms of the transaction, Folksamerica will compensate CNA Re based upon the amount of premiums renewed by Folksamerica over the next two contract renewals. No reserves or liabilities were transferred. In connection with this transaction, Folksamerica established an underwriting office in Chicago staffed with a number of reinsurance professionals previously employed by CNA Re.

              In December 2003, OneBeacon sold one of its wholly-owned subsidiaries, NFU Standard, to Quanta U.S. Holdings, Inc., an indirect subsidiary of Quanta Capital Holdings Ltd. OneBeacon received total proceeds of $22.4 million and recorded an $8.7 million gain on the sale, which is included in other revenues. Concurrently, OneBeacon entered into an assumption reinsurance agreement to assume all in-force insurance contracts of NFU Standard, subject to regulatory and other approvals.

              In April 2002, Folksamerica acquired Imperial Casualty and Indemnity Insurance Company ("Imperial") for $4.2 million including related expenses ($.5 million net of cash acquired). Significant assets and liabilities acquired included investments of $22.8 million and gross loss and LAE reserves of $11.9 million. In accordance with SFAS 141, White Mountains recognized a $7.1 million extraordinary gain during 2002 representing the excess of the fair value of Imperial's net assets over its cost.



      NOTE 3. Reserves for Unpaid Losses and Loss Adjustment Expenses

      Insurance

      Insurance

      White Mountains'Mountains’ insurance subsidiaries establish loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. The process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain.



      Reserves are typically comprised of (1) case reserves for claims reported and (2) reserves for losses that have occurred but for which claims have not yet been reported, referred to as incurred but not reported ("IBNR"(“IBNR”) reserves, which include a provision for expected future development on case reserves. Case reserves are estimated based on the experience and knowledge of claims staff regarding the nature and potential cost of each claim and are adjustedas additional information becomes known or payments are made. IBNR reserves are derived by subtracting paid loss and LAE and case reserves from estimates of ultimate loss and LAE. Actuaries estimate ultimate loss and LAE using various generally accepted actuarial methods applied to known losses and other relevant information. Like case reserves, IBNR reserves are adjusted as additional information becomes known or payments are made.

      Ultimate loss and LAE are generally determined by extrapolation of claim emergence and settlement patterns observed in the past that can reasonably be expected to persist into the future. In forecasting ultimate loss and LAE with respect to any line of business, past experience with respect to that line of business is the primary resource, but cannot be relied upon in isolation. White Mountains'Mountains’ own experience, particularly claims development experience, such as trends in case reserves, payments on and closings of claims, as well as changes in business mix and coverage limits, is the most important information for estimating its reserves. External data, available from organizations such as statistical bureaus, consulting firms and reinsurance companies, is sometimes used to supplement or corroborate White Mountains'Mountains’ own experience, and can be especially useful for estimating costs of new business. For some lines of business, such as "long-tail"“long-tail” coverages discussed below, claims data reported in the most recent accident year is often too limited to provide a meaningful basis for analysis due to the typical delay in reporting of claims. For this type of business, White Mountains uses a selected loss ratio method for the initial accident year or years. This is a standard and accepted actuarial reserve estimation method in these circumstances in which the loss ratio is selected based upon information used in pricing policies for that line of business, as well as any publicly available industry data, such as industry pricing, experience and trends, for that line of business.

      Uncertainties in estimating ultimate loss and LAE are magnified by the time lag between when a claim actually occurs and when it is reported and settled. This time lag is sometimes referred to as the "claim-tail"“claim-tail”. The claim-tail for most property coverages is typically short (usually a few days up to a few months). The claim-tail for liability/casualty coverages, such as automobile liability, general liability, products liability, multiple peril coverage, and workers compensation, can be especially long as claims are often reported and ultimately paid or settled years,even decades, after the related loss events occur. During the long claims reporting and settlement period, additional facts regarding coverages written in prior accident years, as well as about actual claims and trends may become known and, as a result, White Mountains may adjust its reserves. If management determines that an adjustment is appropriate, the adjustment is booked in the accounting period in which such determination is made in accordance with GAAP. Accordingly, in the future should reserves need to be increased or decreased in the future from amounts currently established, future results of operations would be negatively or positively impacted, respectively.as applicable.

      In determining ultimate loss and LAE, the cost to indemnify claimants, provide needed legal defense and other services for insureds and administer the investigation and adjustment of claims are considered. These claim costs are influenced by many factors that change over time, such as expanded coverage definitions as a result of new court decisions, inflation in costs to repair or replace damaged property, inflation in the cost of medical services and legislated changes in statutory benefits, as well as by the particular, unique facts that pertain to each claim. As a result, the rate at which claims arose in the past and the costs to settle them may not always be representative of what will occur in the future. The factors influencing changes in claim costs are often difficult to isolate or quantify and developments in paid and incurred losses from historical trends are frequently subject to multiple and conflicting interpretations. Changes in coverage terms or claims handling practices may also cause future experience and/or development patterns to vary from the past. A key objective of actuaries in



      developing estimates of ultimate loss and LAE, and resulting IBNR reserves, is to identify aberrations and systemic changes occurring within historical experience and accurately adjust for them so that the future can be projected reliably. Because of the factors previously discussed, this process requires the use of informed judgment and is inherently uncertain.


      Reinsurance

      ReinsuranceWhite

              White Mountains' Mountains’ reinsurance subsidiaries establish loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for reinsured events that have already occurred. White Mountains' Mountains’ reinsurance subsidiaries also obtain reinsurance whereby another reinsurer contractually agrees to indemnify White Mountains for all or a portion of the reinsurance risks underwritten by White Mountains. Such arrangements, where one reinsurer provides reinsurance to another reinsurer, are usually referred to as "retrocessional reinsurance"“retrocessional reinsurance” arrangements. White Mountains establishes estimates of amounts recoverable from retrocessional reinsurance in a manner consistent with the loss and LAE liability associated with reinsurance contracts offered to its customers (the "ceding companies"“ceding companies”), net of an allowance for uncollectible amounts. Net reinsurance loss reserves represent loss and LAE reserves reduced by retrocessional reinsurance recoverable on unpaid losses.

      Reinsurance loss and LAE reserve estimates reflect the judgment of both the ceding companies and White Mountains, based on the experience and knowledge of their respective claims personnel, regarding the nature and value of the claims. The ceding companies may periodically adjust the amount of the case reserves as additional information becomes known or partial payments are made. Upon notification of a loss from a ceding company, White Mountains establishes case reserves, including LAE reserves, based upon White Mountains'Mountains’ share of the amount of reserves established by the ceding company and White Mountains'Mountains’ independent evaluation of the loss. Incases where available information indicates that reserves established by the ceding company are inadequate, White Mountains establishes reserves in excess of its share of the reserves established by the ceding company.

      The estimation of net reinsurance loss and LAE reserves is subject to the same factors as the estimation of insurance loss and LAE reserves. In addition to those factors which give rise to inherent uncertainties in establishing insurance loss and LAE reserves, the claim-tail for reinsurers is further extended because claims are first reported through one or more intermediary insurers or reinsurers.

      White Mountains establishes loss reserves for White Mountains Re based on a single point estimate, which is management'smanagement’s best estimate of ultimate losses and loss adjustment expenses. This "best estimate"“best estimate” is derived from a combination of generally accepted actuarial methods. For current accident year business, the estimate is based on an expected loss ratio method. The parameters underlying this method are developed during the underwriting and pricing process. Loss ratio expectations are derived for each contract and these are aggregated by class of business and type of contract. These loss ratios are then applied to the actual earned premiums by class and type of business to estimate ultimate losses. Paid losses are deducted to determine loss and loss expense reserves.

      For prior accident years, White Mountains Re gradually replaces this expected loss ratio approach with estimates based on historical loss reporting patterns. For both current and prior accident years, estimates alsochange when new information becomes available, such as changing loss emergence patterns, or as a result of claim and underwriting audits.

      Once a point estimate is established in the case ofby White Mountains Re, its actuaries estimate loss reserve ranges to measure the sensitivity of the actuarial assumptions used to set the point estimates. These ranges are calculated using similar methods to the point estimate calculation, but with different expected loss ratio and loss reporting pattern assumptions. For the low estimate, more optimistic loss ratios and faster reporting patterns are assumed, while the high estimate uses more conservative loss ratios and slower reporting patterns. These variable assumptions are derived from historical variations



      in loss ratios and reporting patterns by class and type of business. Due to the inherent difficulties in estimating ultimate A&E exposures, White Mountains Re does not estimate ranges of these reserves.



      Loss and loss adjustment expense reserve summary

      The following table summarizes the loss and LAE reserve activities of White Mountains'Mountains’ insurance and reinsurance subsidiaries for the years ended December 31, 2004, 20032006, 2005 and 2002:2004:

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Gross beginning balance $7,728.2 $8,875.3 $9,527.6 
       Less beginning reinsurance recoverable on unpaid losses  (3,473.8) (4,071.9) (4,203.5)
        
       
       
       
      Net loss and LAE reserves  4,254.4  4,803.4  5,324.1 
      Loss and LAE reserves acquired—Sirius(1)  1,328.9     
      Loss and LAE reserves acquired—Sierra Group(1)  244.4     
      Loss and LAE reserves acquired—Tryg-Baltica(1)  136.8     
      Loss and LAE reserves consolidated—NJ Skylands Reciprocal  62.1     
      Loss and LAE reserves sold—Peninsula  (17.0)    
      Loss and LAE reserves acquired—Imperial      11.0 
      Loss and LAE reserves acquired—Fund American Re      17.5 
      Loss and LAE reserves transferred(2)    (5.0) (22.4)

      Losses and LAE incurred relating to:

       

       

       

       

       

       

       

       

       

       
       Current year losses  2,476.0  1,948.7  2,548.2 
       Prior year losses  115.1  189.4  90.0 
        
       
       
       
      Total incurred losses and LAE  2,591.1  2,138.1  2,638.2 

      Accretion of fair value adjustment to loss and LAE reserves

       

       

      43.3

       

       

      48.6

       

       

      79.8

       
      Foreign currency translation adjustment to loss and LAE reserves  48.0     

      Loss and LAE paid relating to:

       

       

       

       

       

       

       

       

       

       
       Current year losses  (926.3) (825.3) (1,072.9)
       Prior year losses  (2,164.6) (1,905.4) (2,171.9)
        
       
       
       
      Total loss and LAE payments  (3,090.9) (2,730.7) (3,244.8)
      Net ending balance  5,601.1  4,254.4  4,803.4 
       Plus ending reinsurance recoverable on unpaid losses  3,797.4  3,473.8  4,071.9 
        
       
       
       
      Gross ending balance $9,398.5 $7,728.2 $8,875.3 
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Gross beginning balance

       

      $

      10,231.2

       

      $

      9,398.5

       

      $

      7,728.2

       

      Less beginning reinsurance recoverable on unpaid losses

       

      (5,025.7

      )

      (3,797.4

      )

      (3,473.8

      )

      Net loss and LAE reserves

       

      5,205.5

       

      5,601.1

       

      4,254.4

       

       

       

       

       

       

       

       

       

      Loss and LAE reserves sold - Sirius America

       

      (124.1

      )

       

       

      Loss and LAE reserves acquired - Stockbridge (3)

       

      38.3

       

       

       

      Loss and LAE reserves sold - NFU

       

       

      (95.9

      )

       

      Loss and LAE reserves sold - TPIC

       

       

      (11.8

      )

       

      Loss and LAE reserves acquired - Sirius (1)

       

       

       

      1,328.9

       

      Loss and LAE reserves acquired - Sierra Insurance Group (1)

       

       

       

      244.4

       

      Loss and LAE reserves acquired - Tryg-Baltica (1)

       

       

       

      136.8

       

      Loss and LAE reserves consolidated - New Jersey Skylands Insurance Association

       

       

       

      62.1

       

      Loss and LAE reserves sold - Peninsula Insurance Company

       

       

       

      (17.0

      )

       

       

       

       

       

       

       

       

      Losses and LAE incurred relating to:

       

       

       

       

       

       

       

      Current year losses

       

      2,208.7

       

      2,697.1

       

      2,476.0

       

      Prior year losses (2)

       

      244.0

       

      161.1

       

      115.1

       

      Total incurred losses and LAE

       

      2,452.7

       

      2,858.2

       

      2,591.1

       

       

       

       

       

       

       

       

       

      Accretion of fair value adjustment to net loss and LAE reserves

       

      24.5

       

      36.9

       

      43.3

       

      Foreign currency translation adjustment to net loss and LAE reserves

       

      35.2

       

      (39.4

      )

      48.0

       

       

       

       

       

       

       

       

       

      Loss and LAE paid relating to:

       

       

       

       

       

       

       

      Current year losses

       

      (845.5

      )

      (848.7

      )

      (926.3

      )

      Prior year losses

       

      (2,025.1

      )

      (2,294.9

      )

      (2,164.6

      )

      Total loss and LAE payments

       

      (2,870.6

      )

      (3,143.6

      )

      (3,090.9

      )

       

       

       

       

       

       

       

       

      Net ending balance

       

      4,761.5

       

      5,205.5

       

      5,601.1

       

      Plus ending reinsurance recoverable on unpaid losses

       

      4,015.7

       

      5,025.7

       

      3,797.4

       

      Gross ending balance

       

      $

      8,777.2

       

      $

      10,231.2

       

      $

      9,398.5

       


      (1)

      Reinsurance recoverables on unpaid losses acquired in the Sirius, Sierra Group and Tryg-Baltica acquisitions totalled $283.8 million, $162.5 million and $14.0 million.

      (2)          During the years ended December 31, 2005 and 2004, White Mountains Re recorded $22.8 million respectively.

      (2)
      Represents retroactive lossand $10.0 million of unfavorable development on its workers compensation reserves cededrelating to Imagine Re. Seeits Sierra Insurance Group acquisition, which was offset dollar-for-dollar by a reduction in the principal amount of the adjustable note that White Mountains Re issued as part of the financing of that acquisition (See Note 4.

      6).

      (3)          Reinsurance recoverables on unpaid losses acquired in the Stockbridge acquisition totalled $52.9 million.


      Loss and LAE development—2004development - 2006

      During the year ended December 31, 2006, White Mountains experienced $244.0 million of unfavorable development on prior accident loss reserves, of which $218.0 million was experienced by White Mountains Re and $22.9 million was experienced by OneBeacon. The adverse development was primarily related to adverse development on loss and LAE reserves previously established for Katrina, Rita and Wilma.

      During 2006, following the receipt of new claims information reported from several ceding companies and subsequent reassessment of the ultimate loss exposures, White Mountains Re increased its gross loss estimates for hurricanes Katrina, Rita and Wilma by $201 million.

      The vast majority of the newly reported claims were on off-shore energy and marine exposures, and as a result, Folksamerica Re set its gross loss and LAE reserves in 2006 on off-shore energy and marine exposures for hurricanes Katrina and Rita at full contract limits and also increased reserves on other exposures affected by hurricanes Katrina, Rita and Wilma.

      Under the terms of Folksamerica Re’s 2005 quota share reinsurance treaty with Olympus Reinsurance Company (“Olympus”), $139 million of these losses, net of reinstatement premiums, recorded in 2006 were ceded to Olympus. However, Folksamerica entered into an indemnity agreement with Olympus, under which it agreed to reimburse Olympus for up to $137 million of these losses, which was recorded as loss and LAE expense during 2006.

      Loss and LAE development - 2005

      During the year ended December 31, 2005, White Mountains experienced $161.1 million of unfavorable development on prior accident year loss reserves, of which $95.0 million was experienced at OneBeacon and approximately $51.8 million was experienced by White Mountains Re.

      The adverse development at OneBeacon was primarily due to higher than anticipated legal defense costs and higher damages from liability assessments in general liability and multiple peril reserves in OneBeacon’s run-off operations. Specifically, OneBeacon’s management had assumed at December 31, 2004 that the IBNR and known case development would be approximately 26% of actual case reserves for the 2001 and prior accident years for multiple peril and general liability. During 2005, case incurred loss and LAE was 72% of the entire future expected development, which was unusually large for these long tail lines of business. As a result, OneBeacon’s managementincreased IBNR reserves for these lines so that as of year end 2005 the IBNR was approximately 40% relative to the remaining case reserves.

      The majority of the adverse development at White Mountains Re resulted from actions taken in response to a ground-up study of Folksamerica’s exposure to asbestos claims that was completed in the third quarter of 2005. The study examined losses incurred by all insureds that had reported over $250,000 of asbestos claims to Folksamerica and a significant sample of all other insureds with reported asbestos claims of less than $250,000. Comparing estimates generated by the study to Folksamerica’s exposed limits by underwriting year led management to record an increase of approximately $50 million in IBNR during the third quarter of 2005. This unfavorable development was partially offset by favorable development in the Sirius International reserve portfolio of approximately $12.0 million, mainly from the three most recent underwriting years.

      Loss and LAE development - 2004

      White Mountains experienced $115.1 million of net unfavorable development on prior accident year loss and LAE reserves during 2004, of which approximately $100.3 million (relating primarily to 2002 and prior accident years) was experienced by OneBeacon and approximately $10.8 million was experienced by White Mountains Re.

      The 2004net unfavorable development at OneBeacon related primarily to personal auto liability, general liability and multiple peril reserves due in part to emerging trends in claims experienced in OneBeacon'sOneBeacon’s run-off operations,



      aswell as national account and program claims administered by third parties. These claim trends principally included higher legal defense costs and higher damages from liability assessments. Prior to 2004, OneBeacon’s management had made assumptions that case reserving standards and settlement practices in the run-off operations would be consistent with the standards and practices that were observed in the ongoing operations. During 2004, multiple peril liability and general liability case incurred loss and LAE for run-off claims was double that for ongoing operations claims. As a result, OneBeacon’s management increased the overall level of reserves for run-off during 2004. In addition, OneBeacon’s management undertook a more in depth review of the standards and practices as applicable to run-off claims and formed a separate run-off claims unit.


      The majority of the unfavorable development recorded at White Mountains Re resulted from certain discontinued lines at Folksamerica as well as run-off operations acquired as part of the Sirius Acquisition. This unfavorable development was partially offset by favorable development in the Sirius International reserve portfolio, mainly from the three most recent underwriting years, and is indicative of the favorable terms and conditions that have existed in the global reinsurance marketplace during that time. Additionally, White Mountains Re recorded $10.0 million of unfavorable loss development on its workers compensation reserves acquired as part of the Sierra Group acquisition in 2004. This unfavorable development was offset by a reduction to the purchase note issued in connection with the acquisition of the Sierra Group.

      Loss and LAE development—2003

              White Mountains recorded $189.4 million of net unfavorable loss reserve development on prior accident year loss and LAE reserves during 2003, of which approximately $146.9 million (relating primarily to 2000 and prior accident years) was experienced by OneBeacon and $45.5 million was experienced by White Mountains Re.

              The majority of the net unfavorable development at OneBeacon in 2003 was due to a $97.7 million increase related to construction defect claims in its run-off operations. The development at OneBeacon in 2003 also included approximately $12.0 million for a significant 1995 property claim from a pool in which OneBeacon had participated (the Industrial Risk Insurers pool) which was settled through an arbitration decision during 2003.

              White Mountains Re experienced approximately $45.5 million of unfavorable loss reserve development during 2003, primarily due to strengthening of A&E reserves and reserves on Risk Capital casualty lines. White Mountains Re's 2003 loss development for A&E exposures was due to the completion of a detailed A&E market share study. This study was based on White Mountains Re's share of industry paid losses to estimated industry carried reserves.

      Loss and LAE development—2002

              Prior accident year losses of $90.0 million incurred in 2002 consisted primarily of $57.4 million recorded during 2002 at OneBeacon, $17.0 million recorded at White Mountains Re, $10.5 million recorded at Fund American Re and $5.1 million recorded at White Mountains' other insurance subsidiaries.

              OneBeacon's prior year development recorded in 2002 was comprised of a $97.4 million increase related to accident years 2000 and prior, while reserves for accident year 2001 were reduced by $40.0 million. Reserve increases for 2000 and prior accident years primarily relate to increases in reserves for workers compensation coverages of $155.3 million (on reserves as of December 31, 2001 of $1.2 billion) reduced primarily by favorable development in general liability coverages and decreases in reserves for unallocated LAE totaling approximately $57.9 million. Workers compensation reserves for accident year 2000 and prior increased related primarily to a continuing unfavorable trend of increases in workers compensation medical claims and indemnity costs. Based on a study provided by the NCCI, workers compensation medical claims costs rose an average of 14% during 2002, compared with an average of 12% during 2001. Average workers compensation indemnity costs rose 11% during 2002 compared with an increase of 9% during 2001. Decreases in reserves for unallocated LAE resulted from completion of an activity-based-cost study which indicated future claim servicing costs were less than originally projected. This decrease primarily related to multiple peril and general liability coverages. The reduction in reserves for accident year 2001 was due in large part to favorable development on property losses from the Attacks.



              The prior year development recorded in 2002 at White Mountains Re consisted primarily of (i) additional losses of $9.7 million relating to the Attacks, (ii) additional losses of $7.3 million from aviation insurance coverage, in relation to the Risk Capital business, (iii) reserve additions relating to asbestos and environmental losses of $11.4 million, (iv) $3.5 million of adverse development relating to the remaining business from the USF Re acquisition, offset by (v) $17.0 million of net income recorded during the first quarter relating to the reversal of an allowance for doubtful reinsurance recoveries related to PCA. These losses, with exception of the those relating to the Attacks, are covered under the Imagine Cover, and were partially offset by amortization of the deferred gain related to retroactive reinsurance.

      Fair value adjustment

      In connection with purchase accounting for the acquisitions of OneBeacon, Acquisition, Sirius and Mutual Service Casualty, White Mountains was required to adjust to fair value OneBeacon's loss and LAE reserves and the related reinsurance recoverables by reducing them by $646.9 millionto fair value on OneBeacon’s, Sirius’ and $346.9 million, respectively, on OneBeacon'sMutual Service Casualty’s acquired balance sheet. Thissheets. The net reduction to net loss and LAE reserves of $300.0 million is being accreted through an income statement charge ratably over the period that the claims are expected to be settled. As a result, White Mountains recognized $33.2 million, $48.6 million and $79.8 million of accretion to loss and LAE reserves during 2004, 2003 and 2002, respectively. White Mountains will accrete the remaining $82.4 million over the future periods in which the claims are settled, which is expected to be seven or eight years from the OneBeacon Acquisition.

              In connection with purchase accounting for the Sirius Acquisition, White Mountains was required to adjust to fair value the loss and LAE reserves on Sirius' acquired balance sheet by $58.1 million. This fair value adjustment is being recognized through an income statement charge ratably with and over the period the claims are settled. As such,Accordingly, White Mountains recognized $10.1$24.5 million, $36.9 million and $43.3 million of such charges, for the year ended December 31,recorded as loss and LAE during 2006, 2005 and 2004.

      The fair values of OneBeacon'sOneBeacon’s loss and LAE reserves and related reinsurance recoverables acquired on June 1, 2001, and Sirius'Sirius’ loss and LAE reserves and related reinsurance recoverables acquired on April 16, 2004, and Mutual Service Casualty loss and LAE reserves and related recoverables acquired on December 22, 2006 were based on the present value of their expected cash flows with consideration for the uncertainty inherent in both the timing of, and the ultimate amount of, future payments for losses and receipts of amounts recoverable from reinsurers. In estimating fair value, management adjusted the nominal loss reserves of OneBeacon (net of the effects of reinsurance obtained from the NICO Cover, as defined below and the GRC Cover)Cover, as defined below), Sirius and SiriusMutual Service Casualty and discounted them to their present value using an applicable risk-free discount rate. The series of future cash flows related to such loss payments and reinsurance recoveries were developed using OneBeacon'sOneBeacon’s, Sirius’ and Sirius'Mutual Service Casualty’s historical loss data. The resulting discount was reduced by the "price"“price” for bearing the uncertainty inherent in OneBeacon'sOneBeacon’s, Sirius’ and Sirius'Mutual Service Casualty’s net loss reserves in order to estimate fair value. This was approximately 11%, 12% and 12%2% of the present value of the expected underlying cash flows of theloss reserves and reinsurance recoverables of OneBeacon, Sirius and Sirius,Mutual Service Casualty, respectively, which is believed to be reflective of the cost OneBeacon, Sirius and SiriusMutual Service Casualty would incur if they had attempted to reinsure the full amount of its net loss and LAE reserves with a third party reinsurer.


      Asbestos and environmental loss and loss adjustment expense reserve activity

      White Mountains'Mountains’ reserves include provisions made for claims that assert damages from asbestos and environmental (“A&E&E”) related exposures. Asbestos claims relate primarily to injuries asserted by those who came in contact with asbestos or products containing asbestos. Environmental claims relate primarily to pollution and related clean-up costs obligations, particularly as mandated by federal and state environmental protection agencies. In addition to the factors described above regarding the reserving process, White Mountains estimates its A&E reserves based upon, among other factors, facts surrounding reported cases and exposures to claims, such as policy limits and deductibles, current law, past and projected



      claim activity and past settlement values for similar claims, as well as analysis of industry studies and events, such as recent settlements and asbestos-related bankruptcies. The cost of administering A&E claims, which is an important factor in estimating loss reserves, tends to be higher than in the case of non-A&E claims due to the higher legal costs typically associated with A&E claims. Due to the inherent difficulties in estimating ultimate A&E exposures, OneBeacon does not estimate a range for A&E incurred losses.

      Immediately prior to White Mountains'Mountains’ acquisition of OneBeacon, OneBeacon purchased a reinsurance contract with NICONational Indemnity Company (“NICO”) under which OneBeacon is entitled to recover from NICO up to $2.5 billion in the future for asbestos claims arising from business written by OneBeacon in 1992 and prior, environmental claims arising from business written by OneBeacon in 1987 and prior, and certain other exposures.exposures (the “NICO Cover”). Under the terms of the NICO Cover, NICO receives the economic benefit of reinsurance recoverables from certain of OneBeacon'sOneBeacon’s third party reinsurers in existence at the time the NICO Cover was executed ("(“Third Party Recoverables"Recoverables”). As a result, the Third Party Recoverables serve to protect the $2.5 billion limit of NICO coverage for the benefit of OneBeacon. Any amounts uncollectible from third party reinsurers due to dispute or the reinsurers'reinsurers’ financial inability to pay are covered by NICO under its agreement with OneBeacon. Third Party Recoverables are typically for the amount of loss in excess of a stated level each year. Of claim payments in the past 11 years, approximately 63%50% of asbestos losses and 39% of environmental losses have been recovered under the historical third party reinsurance.


      In June 2005, OneBeacon completed an internal study of its A&E exposures. This study considered, among other items, (1) facts, such as policy limits, deductibles and available third party reinsurance, related to reported claims; (2) current law; (3) past and projected claim activity and past settlement values for similar claims; (4) industry studies and events, such as recent settlements and asbestos-related bankruptcies; and (5) collectibility of third-party reinsurance. Based on the study, OneBeacon increased its best estimate of its incurred losses ceded to NICO, net of underlying reinsurance, by $353 million ($841 million gross) to $2.1 billion, which is within the $2.5 billion coverage provided by the NICO Cover. OneBeacon estimates that the range of reasonable outcomes around its best estimate is $1.7 billion to $2.4 billion, versus a range of $1.5 billion to $2.4 billion from its previous study that was conducted in 2003. Due to the NICO Cover, there was no impact to income or equity from the change in estimate.

      The increase in the estimate of incurred A&E losses was principally driven by raised projections for claims related to asbestos (particularly from assumed reinsurance business), and for mass torts other than asbestos and environmental, particularly lead and sexual molestation. This increase was partially offset by reduced projections of ultimate hazardous waste losses.

      As noted above, OneBeacon estimates that on an incurred basis it has exhaustedused approximately $1.7$2.1 billion of the coverage provided by NICO at December 31, 2004. At December 31, 2004, $14.32006. Since entering into the NICO Cover, $29.2 million of the $1.7$2.1 billion of exhaustedutilized coverage relates to uncollected amounts from NICO related to uncollectible Third Party Recoverables.third party reinsurers through December 31, 2006. Net losses paid totaled approximately $682$847 million as of December 31, 2004,2006, with $95$146 million paid in 2004.2006. Asbestos payments during 20042006 reflect payments resulting from intensified efforts by claimants to resolve asbestos claims prior to enactment of potential Federal asbestos legislation. To the extent that OneBeacon'sOneBeacon’s estimate of ultimate A&E losses as well as the estimate and collectibility of Third Party Recoverables differs from actual experience, the remaining protection under the NICO Cover may be more or less than the approximate $757$404 million that OneBeacon estimates remained at December 31, 2004.2006.

              For purposes of determining available reinsurance, product liability asbestos claims typically are aggregated as a single loss within each policy period. As a result, losses often exceed the retention level under the reinsurance agreement and reinsurance recoveries are obtained. However, for claims being asserted under premises and operations coverage, the losses are generally not aggregated for purposes of determining reinsurance recoveries, so OneBeacon expects that in the future a smaller percentage of these losses will be covered as Third Party Recoverables than has been true historically of products liability asbestos losses.

      White Mountains'Mountains’ reserves for A&E losses at December 31, 20042006 represent management'smanagement’s best estimate of its ultimate liability based on information currently available. However, as case law expands, and medical and clean-up costs increase and industry settlement practices change, White Mountains may be subject to asbestos and environmental losses beyond currently estimated amounts. White Mountains cannot reasonably estimate at the present time loss reserve additions arising from any such future unfavorable developments and cannot be sure that allocated loss reserves, plus the remaining capacity under the NICO Cover and other reinsurance contracts, will be sufficient to cover additional liability arising from any such unfavorable developments.

      The following tables summarize reported asbestos and environmental loss and LAE reserve activities (gross and net of reinsurance) for OneBeacon, White Mountains Re and White Mountains'Mountains’ other operations, consisting of American Centennial and British Insurance Company, for the years ended December 31, 2004, 20032006, 2005 and 2002,2004, respectively.



      OneBeacon

      Net A&E Loss Reserve Activity

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       



       Period Ended December 31,
       

       

      Pre-NICO

       

      Pre-NICO

       

      Pre-NICO

       



       2004
       2003
       2002
       

       

      Gross

       

      Net (1)

       

      Net

       

      Gross

       

      Net (1)

       

      Net

       

      Gross

       

      Net (1)

       

      Net

       

      Net Asbestos and Environmental Loss Reserve Activity
      (in millions)

       
      Gross
       Net
       Gross
       Net
       Gross
       Net
       
      Asbestos:Asbestos:                   

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance $969.5 $4.2 $1,137.0 $4.9 $1,194.8 $5.8 

       

      $

      1,323.4

       

      $

      845.9

       

      $

      7.4

       

      868.9

       

      $

      599.2

       

      $

      8.5

       

      $

      969.5

       

      $

      641.6

       

      $

      4.2

       

      Incurred losses and LAE  6.7  5.9  (.6)      
      Paid losses and LAE  (107.3) (1.6) (166.9) (.7) (57.8) (.9)
       
       
       
       
       
       
       

      Incurred losses and LAE

       

      (4.0

      )

      (1.6

      )

       

      544.8

       

      307.5

       

       

      6.7

       

      1.5

       

      5.9

       

      Paid losses and LAE

       

      (91.8

      )

      (77.7

      )

      (.6

      )

      (90.3

      )

      (60.8

      )

      (1.1

      )

      (107.3

      )

      (43.9

      )

      (1.6

      )

      Ending balanceEnding balance  868.9  8.5  969.5  4.2  1,137.0  4.9 

       

      1,227.6

       

      766.6

       

      6.8

       

      1,323.4

       

      845.9

       

      7.4

       

      868.9

       

      599.2

       

      8.5

       

       
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Environmental:Environmental:                   

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance  559.8  8.6  701.3  17.1  749.8  18.4 

       

      729.7

       

      421.5

       

      6.5

       

      513.0

       

      408.4

       

      10.2

       

      559.8

       

      454.8

       

      8.6

       

      Incurred losses and LAE  9.6  6.7  (11.1)      
      Paid losses and LAE  (56.4) (5.1) (130.4) (8.5) (48.5) (1.3)
       
       
       
       
       
       
       

      Incurred losses and LAE

       

      (8.6

      )

      (7.8

      )

       

      265.7

       

      42.7

       

      2.0

       

      9.6

       

      4.7

       

      6.7

       

      Paid losses and LAE

       

      (43.1

      )

      (19.1

      )

      4.1

       

      (49.0

      )

      (29.6

      )

      (5.7

      )

      (56.4

      )

      (51.1

      )

      (5.1

      )

      Ending balanceEnding balance  513.0  10.2  559.8  8.6  701.3  17.1 

       

      678.0

       

      394.6

       

      10.6

       

      729.7

       

      421.5

       

      6.5

       

      513.0

       

      408.4

       

      10.2

       

       
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Total asbestos and environmental:Total asbestos and environmental:                   

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance  1,529.3  12.8  1,838.3  22.0  1,944.6  24.2 

       

      2,053.1

       

      1,267.4

       

      13.9

       

      1,381.9

       

      1,007.6

       

      18.7

       

      1,529.3

       

      1,096.4

       

      12.8

       

      Incurred losses and LAE  16.3  12.6  (11.7)      
      Paid losses and LAE  (163.7) (6.7) (297.3) (9.2) (106.3) (2.2)
       
       
       
       
       
       
       

      Incurred losses and LAE

       

      (12.6

      )

      (9.4

      )

       

      810.5

       

      350.2

       

      2.0

       

      16.3

       

      6.2

       

      12.6

       

      Paid losses and LAE

       

      (134.9

      )

      (96.8

      )

      3.5

       

      (139.3

      )

      (90.4

      )

      (6.8

      )

      (163.7

      )

      (95.0

      )

      (6.7

      )

      Ending balanceEnding balance $1,381.9 $18.7 $1,529.3 $12.8 $1,838.3 $22.0 

       

      $

      1,905.6

       

      $

      1,161.2

       

      $

      17.4

       

      $

      2,053.1

       

      $

      1,267.4

       

      $

      13.9

       

      $

      1,381.9

       

      $

      1,007.6

       

      $

      18.7

       

       
       
       
       
       
       
       

      (1)   Represents A&E reserve activity, net of third party reinsurance, but prior to the NICO Cover.

      White Mountains Re

      Net A&E Loss Reserve Activity

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       



       Year Ended December 31,
       

       

      Gross

       

      Net

       

      Gross

       

      Net

       

      Gross

       

      Net

       


       2004
       2003
       2002
       
      Net Asbestos and Environmental Loss Reserve Activity
      (in millions)

       
      Gross
       Net
       Gross
       Net
       Gross
       Net
       
      Asbestos:Asbestos:             

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance $69.7 $64.1 $52.7 $39.5 $48.9 $37.5 

       

      $

      147.7

       

      $

      109.1

       

      $

      68.1

       

      $

      59.3

       

      $

      69.7

       

      $

      64.1

       

      Incoming reserves due to the Sirius Acquisition 9.7 6.9     
      Incurred losses and LAE 8.0 2.6 27.7 32.0 9.7 6.5 
      Paid losses and LAE (19.3) (14.3) (10.7) (7.4) (5.9) (4.5)
       
       
       
       
       
       
       

      Incoming (Outgoing) asbestos reserves due to Sirius America acquisition/ divestiture

       

      (3.3

      )

      (0.9

      )

       

       

      9.7

       

      6.9

       

      Incoming asbestos reserves due to MSC acquisition

       

      1.3

       

      1.0

       

       

       

       

       

      Incurred losses and LAE

       

      (0.3

      )

      (0.1

      )

      91.3

       

      62.0

       

      8.0

       

      2.6

       

      Paid losses and LAE

       

      (9.8

      )

      (7.9

      )

      (11.7

      )

      (12.2

      )

      (19.3

      )

      (14.3

      )

      Ending balanceEnding balance 68.1 59.3 69.7 64.1 52.7 39.5 

       

      135.6

       

      101.2

       

      147.7

       

      109.1

       

      68.1

       

      59.3

       

       
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Environmental:Environmental:             

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance 17.4 15.1 14.4 12.5 13.8 11.4 

       

      13.5

       

      8.3

       

      21.9

       

      15.7

       

      17.4

       

      15.1

       

      Incoming reserves due to the Sirius Acquisition 3.2 1.9     
      Incurred losses and LAE 2.8 .1 4.7 3.7 3.8 4.0 
      Paid losses and LAE (1.5) (1.4) (1.7) (1.1) (3.2) (2.9)
       
       
       
       
       
       
       

      Incoming (Outgoing) environmental reserves due to Sirius America acquisition/ divestiture

       

      (1.5

      )

      (0.9

      )

       

       

      3.2

       

      1.9

       

      Incoming environmental reserves due to MSC acquisition

       

      5.2

       

      4.4

       

       

       

       

       

      Incurred losses and LAE

       

      (0.8

      )

      (0.2

      )

      (3.6

      )

      (3.4

      )

      2.8

       

      .1

       

      Paid losses and LAE

       

      (0.6

      )

      (0.5

      )

      (4.8

      )

      (4.0

      )

      (1.5

      )

      (1.4

      )

      Ending balanceEnding balance 21.9 15.7 17.4 15.1 14.4 12.5 

       

      15.8

       

      11.1

       

      13.5

       

      8.3

       

      21.9

       

      15.7

       

       
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Total asbestos and environmental:Total asbestos and environmental:             

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance 87.1 79.2 67.1 52.0 62.7 48.9 

       

      161.2

       

      117.4

       

      90.0

       

      75.0

       

      87.1

       

      79.2

       

      Incoming reserves due to the Sirius Acquisition 12.9 8.8     
      Incurred losses and LAE 10.8 2.7 32.4 35.7 13.5 10.5 
      Paid losses and LAE (20.8) (15.7) (12.4) (8.5) (9.1) (7.4)
       
       
       
       
       
       
       

      Incoming (Outgoing) A&E reserves due to Sirius America acquisition/ divestiture

       

      (4.8

      )

      (1.8

      )

       

       

      12.9

       

      8.8

       

      Incoming A&E reserves due to MSC acquisition

       

      6.5

       

      5.4

       

       

       

       

       

      Incurred losses and LAE

       

      (1.1

      )

      (0.3

      )

      87.7

       

      58.6

       

      10.8

       

      2.7

       

      Paid losses and LAE

       

      (10.4

      )

      (8.4

      )

      (16.5

      )

      (16.2

      )

      (20.8

      )

      (15.7

      )

      Ending balanceEnding balance $90.0 $75.0 $87.1 $79.2 $67.1 $52.0 

       

      $

      151.4

       

      $

      112.3

       

      $

      161.2

       

      $

      117.4

       

      $

      90.0

       

      $

      75.0

       

       
       
       
       
       
       
       

      Other operations

      Net A&E Loss Reserve Activity (1)

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       



       Year Ended December 31,
       

       

      Gross

       

      Net

       

      Gross

       

      Net

       

      Gross

       

      Net

       

      Net Asbestos and Environmental Loss Reserve
      Activity(1)
      (in millions)

       2004
       2003
       2002
       
      Gross
       Net
       Gross
       Net
       Gross
       Net
       
      Asbestos:Asbestos:             

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance $27.0 $25.7 $29.4 $28.4 $23.0 $21.9 

       

      $

      45.8

       

      $

      44.7

       

      $

      37.5

       

      $

      36.5

       

      $

      27.0

       

      $

      25.7

       

      Incurred losses and LAE 15.3 7.6 1.3 (2.1) 10.2 10.1 
      Paid losses and LAE (4.8) 3.2 (3.7) (.6) (3.8) (3.6)
       
       
       
       
       
       
       

      Incurred losses and LAE

       

      5.6

       

      3.8

       

      11.9

       

      9.7

       

      15.3

       

      7.6

       

      Paid losses and LAE

       

      (3.0

      )

      (1.4

      )

      (3.6

      )

      (1.5

      )

      (4.8

      )

      3.2

       

      Ending balanceEnding balance 37.5 36.5 27.0 25.7 29.4 28.4 

       

      48.4

       

      47.1

       

      45.8

       

      44.7

       

      37.5

       

      36.5

       

       
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Environmental:Environmental:             

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance 5.7 5.5 6.0 5.8 8.2 7.8 

       

      10.1

       

      9.7

       

      6.9

       

      6.8

       

      5.7

       

      5.5

       

      Incurred losses and LAE 2.0 .9 (.5) (.1) (1.5) (1.3)
      Paid losses and LAE (.8) .4 .2 (.2) (.7) (.7)
       
       
       
       
       
       
       

      Incurred losses and LAE

       

      (0.6

      )

      (0.4

      )

      4.1

       

      3.3

       

      2.0

       

      .9

       

      Paid losses and LAE

       

      (0.4

      )

      (0.2

      )

      (.9

      )

      (.4

      )

      (.8

      )

      .4

       

      Ending balanceEnding balance 6.9 6.8 5.7 5.5 6.0 5.8 

       

      9.1

       

      9.1

       

      10.1

       

      9.7

       

      6.9

       

      6.8

       

       
       
       
       
       
       
       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Total asbestos and environmental:Total asbestos and environmental:             

       

       

       

       

       

       

       

       

       

       

       

       

       

      Beginning balanceBeginning balance 32.7 31.2 35.4 34.2 31.2 29.7 

       

      55.9

       

      54.4

       

      44.4

       

      43.3

       

      32.7

       

      31.2

       

      Incurred losses and LAE 17.3 8.5 .8 (2.2) 8.7 8.8 
      Paid losses and LAE (5.6) 3.6 (3.5) (.8) (4.5) (4.3)
       
       
       
       
       
       
       

      Incurred losses and LAE

       

      5.0

       

      3.4

       

      16.0

       

      13.0

       

      17.3

       

      8.5

       

      Paid losses and LAE

       

      (3.4

      )

      (1.6

      )

      (4.5

      )

      (1.9

      )

      (5.6

      )

      3.6

       

      Ending balanceEnding balance $44.4 $43.3 $32.7 $31.2 $35.4 $34.2 

       

      $

      57.5

       

      $

      56.2

       

      $

      55.9

       

      $

      54.4

       

      $

      44.4

       

      $

      43.3

       

       
       
       
       
       
       
       

      (1)

      The asbestos and environmental reserve activity for White Mountains'Mountains’ other operations is comprised of American Centennial and British Insurance Company, two insurance subsidiaries that have been in run-off since 1985.The majority of the A&E reserves from other operations are recorded at American Centennial. At December 31, 2004,2006, American Centennial had 3348 insureds with open asbestos and environmental claims of which 19 were30 related to asbestos related claims and 14 were18 related to environmental related claims.

      F-27





      NOTE 4. Third Party Reinsurance

      In the normal course of business, White Mountains'Mountains’ insurance and reinsurance subsidiaries seek to limit losses that may arise from catastrophes or other events by reinsuring with third party reinsurers. White Mountains remains liable for risks reinsured even if the reinsurer does not honor its obligations



      under reinsurance contracts. The effects of reinsurance on White Mountains'Mountains’ insurance and reinsurance subsidiaries'subsidiaries’ written and earned premiums and on losslosses and LAE were as follows:

      Year ended December 31, 2004
      Millions

       OneBeacon
       White
      Mountains Re

       Esurance
       Other
      Insurance
      Operations

       Total
       
      Gross written premiums:                
       Direct $2,367.9 $367.4 $176.7 $ $2,912.0 
       Assumed  289.6  1,565.9  24.6    1,880.1 
       Ceded  (198.4) (687.0) (1.9)   (887.3)
        
       
       
       
       
       
      Net written premiums $2,459.1 $1,246.3 $199.4 $ $3,904.8 
        
       
       
       
       
       
      Gross earned premiums:                
       Direct $2,253.9 $310.4 $153.6 $ $2,717.9 
       Assumed  331.1  1,625.4  24.4    1,980.9 
       Ceded  (206.5) (670.3) (1.5)   (878.3)
        
       
       
       
       
       
      Net earned premiums $2,378.5 $1,265.5 $176.5 $ $3,820.5 
        
       
       
       
       
       
      Losses and LAE:                
       Direct $1,540.7 $196.3 $108.6 $2.4 $1,848.0 
       Assumed  681.7  1,159.7  14.0  11.0  1,866.4 
       Ceded  (677.2) (437.1) (.2) (8.8) (1,123.3)
        
       
       
       
       
       
      Net losses and LAE $1,545.2 $918.9 $122.4 $4.6 $2,591.1 
        
       
       
       
       
       
      Year ended December 31, 2003
      Millions

       OneBeacon(1)
       White
      Mountains Re

       Esurance
       Other
      Insurance
      Operations

       Total
       
      Gross written premiums:                
       Direct $2,016.2 $5.9 $87.4 $41.2 $2,150.7 
       Assumed  234.7  1,409.0  29.0    1,672.7 
       Ceded  (278.4) (529.2)   (8.1) (815.7)
        
       
       
       
       
       
      Net written premiums $1,972.5 $885.7 $116.4 $33.1 $3,007.7 
        
       
       
       
       
       
      Gross earned premiums:                
       Direct $2,234.2 $6.5 $69.2 $39.2 $2,349.1 
       Assumed  369.1  1,301.3  30.7  .1  1,701.2 
       Ceded  (443.0) (462.0)   (7.6) (912.6)
        
       
       
       
       
       
      Net earned premiums $2,160.3 $845.8 $99.9 $31.7 $3,137.7 
        
       
       
       
       
       
      Losses and LAE:                
       Direct $1,492.1 $(18.5)$55.6 $30.5 $1,559.7 
       Assumed  107.3  711.4  25.4  .1  844.2 
       Ceded  (123.8) (135.3)   (6.7) (265.8)
        
       
       
       
       
       
      Net losses and LAE $1,475.6 $557.6 $81.0 $23.9 $2,138.1 
        
       
       
       
       
       

      Year ended December 31, 2006
      Millions

       

      OneBeacon

       

      White
      Mountains Re

       

      Esurance

       

      Other
      Insurance
      Operations

       

      Total

       

      Gross written premiums:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,028.0

       

      $

      236.2

       

      $

      563.5

       

      $

       

      $

      2,827.7

       

      Assumed

       

      60.4

       

      1,388.4

       

      36.0

       

       

      1,484.8

       

      Ceded

       

      (130.8

      )

      (334.7

      )

      (3.6

      )

       

      (469.1

      )

      Net written premiums

       

      $

      1,957.6

       

      $

      1,289.9

       

      $

      595.9

       

      $

       

      $

      3,843.4

       

      Gross earned premiums:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,007.6

       

      $

      240.2

       

      $

      495.3

       

      $

       

      $

      2,743.1

       

      Assumed

       

      65.4

       

      1,448.8

       

      35.7

       

       

      1,549.9

       

      Ceded

       

      (129.0

      )

      (447.8

      )

      (3.5

      )

       

      (580.3

      )

      Net earned premiums

       

      $

      1,944.0

       

      $

      1,241.2

       

      $

      527.5

       

      $

       

      $

      3,712.7

       

      Losses and LAE:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      1,245.1

       

      $

      132.0

       

      $

      359.5

       

      $

      5.6

       

      $

      1,742.2

       

      Assumed

       

      54.1

       

      1,030.7

       

      25.0

       

      (0.1

      )

      1,109.7

       

      Ceded

       

      (118.9

      )

      (278.1

      )

      (0.7

      )

      (1.6

      )

      (399.3

      )

      Net losses and LAE

       

      $

      1,180.3

       

      $

      884.6

       

      $

      383.8

       

      $

      3.9

       

      $

      2,452.6

       

      Year ended December 31, 2005
      Millions

       

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon(1)

       

      White
      Mountains Re

       

      Esurance

       

      Other
      Insurance
      Operations

       

      Total

       

      Gross written premiums:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,177.0

       

      $

      338.0

       

      $

      320.9

       

      $

       

      $

      2,835.9

       

      Assumed

       

      89.6

       

      1,643.3

       

      31.0

       

      1.9

       

      1,765.8

       

      Ceded

       

      (145.5

      )

      (677.2

      )

      (2.8

      )

      (.1

      )

      (825.6

      )

      Net written premiums

       

      $

      2,121.1

       

      $

      1,304.1

       

      $

      349.1

       

      $

      1.8

       

      $

      3,776.1

       

      Gross earned premiums:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,175.8

       

      $

      347.6

       

      $

      280.1

       

      $

       

      $

      2,803.5

       

      Assumed

       

      102.7

       

      1,784.6

       

      29.1

       

      1.9

       

      1,918.3

       

      Ceded

       

      (160.1

      )

      (760.6

      )

      (2.4

      )

      (.1

      )

      (923.2

      )

      Net earned premiums

       

      $

      2,118.4

       

      $

      1,371.6

       

      $

      306.8

       

      $

      1.8

       

      $

      3,798.6

       

      Losses and LAE:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,220.5

       

      $

      224.2

       

      $

      186.2

       

      $

      13.7

       

      $

      2,644.6

       

      Assumed

       

      187.0

       

      2,113.9

       

      20.1

       

      1.9

       

      2,322.9

       

      Ceded

       

      (1,006.0

      )

      (1,100.2

      )

      (.1

      )

      (3.0

      )

      (2,109.3

      )

      Net losses and LAE

       

      $

      1,401.5

       

      $

      1,237.9

       

      $

      206.2

       

      $

      12.6

       

      $

      2,858.2

       


      Year ended December 31, 2002
      Millions

       OneBeacon(1)
       White
      Mountains Re

       Esurance
       Other
      Insurance
      Operations

       Total
       
      Gross written premiums:                
       Direct $2,782.6 $7.2 $20.2 $34.9 $2,844.9 
       Assumed  569.0  974.8  32.8  .1  1,576.7 
       Ceded  (828.8) (293.8)   (5.5) (1,128.1)
        
       
       
       
       
       
      Net written premiums $2,522.8 $688.2 $53.0 $29.5 $3,293.5 
        
       
       
       
       
       
      Gross earned premiums:                
       Direct $3,181.8 $7.1 $9.9 $34.8 $3,233.6 
       Assumed  504.6  922.4  30.9    1,457.9 
       Ceded  (815.5) (294.5)   (5.1) (1,115.1)
        
       
       
       
       
       
      Net earned premiums $2,870.9 $635.0 $40.8 $29.7 $3,576.4 
        
       
       
       
       
       
      Losses and LAE:                
       Direct $2,405.5 $(25.9)$7.8 $31.1 $2,418.5 
       Assumed  389.0  601.1  28.8  1.1  1,020.0 
       Ceded  (663.2) (133.0)   (4.1) (800.3)
        
       
       
       
       
       
      Net losses and LAE $2,131.3 $442.2 $36.6 $28.1 $2,638.2 
        
       
       
       
       
       

       

       

       

       

       

       

       

       

      Other

       

       

       

      Year ended December 31, 2004

       

       

       

      White

       

       

       

      Insurance

       

       

       

      Millions

       

      OneBeacon(1)

       

      Mountains Re

       

      Esurance

       

      Operations

       

      Total

       

      Gross written premiums:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,367.9

       

      $

      367.4

       

      $

      176.7

       

      $

       

      $

      2,912.0

       

      Assumed

       

      289.6

       

      1,565.9

       

      24.6

       

       

      1,880.1

       

      Ceded

       

      (198.4

      )

      (687.0

      )

      (1.9

      )

       

      (887.3

      )

      Net written premiums

       

      $

      2,459.1

       

      $

      1,246.3

       

      $

      199.4

       

      $

       

      $

      3,904.8

       

      Gross earned premiums:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      2,253.9

       

      $

      310.4

       

      $

      153.6

       

      $

       

      $

      2,717.9

       

      Assumed

       

      331.1

       

      1,625.4

       

      24.4

       

       

      1,980.9

       

      Ceded

       

      (206.5

      )

      (670.3

      )

      (1.5

      )

       

      (878.3

      )

      Net earned premiums

       

      $

      2,378.5

       

      $

      1,265.5

       

      $

      176.5

       

      $

       

      $

      3,820.5

       

      Losses and LAE:

       

       

       

       

       

       

       

       

       

       

       

      Direct

       

      $

      1,439.3

       

      $

      196.3

       

      $

      108.6

       

      $

      2.4

       

      $

      1,746.6

       

      Assumed

       

      221.3

       

      1,159.7

       

      14.0

       

      11.0

       

      1,406.0

       

      Ceded

       

      (115.4

      )

      (437.1

      )

      (.2

      )

      (8.8

      )

      (561.5

      )

      Net losses and LAE

       

      $

      1,545.2

       

      $

      918.9

       

      $

      122.4

       

      $

      4.6

       

      $

      2,591.1

       


      (1)

      On November 1, 2001, OneBeacon transferred its regional agency business, agents and operations in 42 states and the District of Columbia to Liberty Mutual pursuant to a renewal rights agreement (the “Liberty Agreement”). Assumed amounts principally relate to business assumed under the Liberty Agreement.

      OneBeacon

      OneBeacon

      In the ordinary course of its business, OneBeacon purchases reinsurance from high-quality, highly rated, third party reinsurers in order to provide diversification of its business and minimize loss from large risks or catastrophic events. OneBeacon uses PML forecasting to quantify its exposure to catastrophic losses.

      The timing and size of catastrophe losses are unpredictable and the level of losses experienced in any year could be material to OneBeacon'sOneBeacon’s operating results and financial position. Examples of catastrophes include losses caused by earthquakes, wildfires, hurricanes and other types of storms and terrorist acts. The extent of losses causedby catastrophes is both a function of the amount and type of insured exposure in an area affected by the event and the severity of the event. OneBeacon continually assesses and implements programsuses models (primarily AIR V.8) to estimate losses its exposures would generate under various scenarios as well as the probability of those losses occurring. OneBeacon uses this model output in conjunction with other data to manage its exposure to catastrophe losses through individual risk selection and by limiting its concentration of insurance written in catastrophe-prone areas, such as coastal regions. In addition, OneBeacon imposes wind deductibles on existing coastal windstorm exposures. OneBeacon'sOneBeacon believes that its largest single event natural catastrophe risk is Northeast windstorm. exposures are Northeastern United States windstorms and California earthquakes.

      OneBeacon seeks to further reduce its exposure topotential loss from catastrophe lossesexposures through the purchase of catastrophe reinsurance. Effective July 1, 2006, OneBeacon uses PML forecastingrenewed its property catastrophe reinsurance program through June 30, 2007. Under that cover, the first $200 million of losses resulting from any single catastrophe are retained by OneBeacon and losses from a single event in excess of $200 million and up to quantify its exposure$850 million are reinsured for 100% of the loss. OneBeacon anticipates this $850 million limit is sufficient to catastrophic losses. PMLcover Northeast windstorm losses with a 0.4%-0.5% probability of occurrence (1-in-250-year event to 1-in-200-year event). In the event of a catastrophe, OneBeacon’s property catastrophe reinsurance program is automatically reinstated for the remainder of the original contract term for a statistical modeling techniquereinstatement premium that measures a company's catastrophic exposure asis based on the maximum probable loss in a given time period.percentage of coverage reinstated and the original property catastrophe coverage premium.

      Since the terrorist attacks of September 11, 2001 (the "Attacks"“Attacks”), OneBeacon has sought to mitigate the risk associated with any future terrorist attacks by reducinglimiting the aggregate insured value of policies written in geographic areas with a high concentration of exposure to losses from terrorist attacksattacks. This is accomplished by either limiting the total insured values exposed, or, by seeking where applicable, through the use of terrorism exclusions.

      On December 22, 2005, the United States government extended the Terrorism Act, which was set to exclude coverageexpire on December 31, 2005, for such losses from their policies.

              Ontwo more years. The Terrorism Act, originally enacted on November 26, 2002, President Bush signed the Terrorism Risk Insurance Act (the "Terrorism Act") establishingestablishes a federal "backstop"Federal “backstop” for commercial property and casualty losses, including workers compensation, resulting from acts of terrorism by or on behalf of any foreign person or foreign interest. The Terrorism Act requireslaw limits the industry’s aggregate liability by requiring the Federal government to share 85% of certified losses in 2007 once a company meets a specific retention or


      deductible as determined by its prior year’s direct written premiums and limits the aggregate liability to be paid by the government and industry without further action by Congress at $100.0 billion. In exchange for this “back-stop,” primary commercial insurers are required to make terrorism coverage available


      immediately to commercial insureds for losses from acts of non-domestic terrorism as specified in the Terrorism Act. The following types of coverage are excluded from the program: commercial automobile, burglary and provides Federal protection above individual company retentiontheft, surety, farmowners multi-peril and aggregate industry retention levels.all professional liability coverage except directors and officers coverage. OneBeacon estimates its individual retention level for commercial policies subject to the Terrorism Act to be approximately $160.0$162 million in 2005. Aggregate2007. The aggregate industry retention levels are $15.0level is $27.5 billion for 2005.in 2007. The Federal government will pay 90%85% of covered terrorism losses that exceed either OneBeacon'sOneBeacon’s or the industry'sindustry’s retention levels in 2007 up to $100.0a total of $100 billion. The fate of the Terrorism Act beyond 2005 remains uncertain. It is anticipated that Congress will likely rule on a possible extension during the summer of 2005; however, there is a chance that the Terrorism Act could expire on December 31, 2005.

              Effective July 1, 2004, OneBeacon renewed its normalOneBeacon’s current propertyand casualty catastrophe reinsurance program to cover its full estimated PML (one-in-250 year) through June 30, 2005. Under that cover, the first $200.0 million of losses resulting from any single catastrophe are retained by OneBeacon and losses from a single event in excess of $200.0 million and up to $850.0 million are reinsuredprograms provide coverage for 100% of the loss. In the event of a catastrophe, OneBeacon can reinstate its property catastrophe reinsurance program for the remainder of the original contract term by paying a reinstatement premium which is based on the percentage of coverage reinstated and the original property catastrophe coverage premium.

              OneBeacon's property catastrophe reinsurance program does not cover personal or commercial property losses resulting from nuclear, biological or chemical terrorist attacks. The program covers personal property losses resulting from other types of terrorist attacks, and commercial property losses resulting from other types of domestic terrorist attacks or“non-certified” events not "certified" as defined under the Terrorism Act. The Terrorism Act, provides protection for commercial propertyprovided such losses for certified events including those arising fromare not the result of a nuclear, biological or chemical attacks.attack.

      OneBeacon also purchases individualindividual property reinsurance coverage for certain risks to reduce large loss volatility. The Property per Riskproperty-per-risk reinsurance program reinsures losses in excess of $5.0$5 million up to $75.0$75 million. Individual risk facultative reinsurance may be purchased above $75.0$75 million where OneBeaconit deems it appropriate. The Property per Riskproperty-per-risk treaty also reinsuresprovides one limit of reinsurance protection for losses in excess of $10.0$10 million up to $75.0$75 million on an individual risk basis for terrorism losses. However, nuclear, biological and chemical events are not covered.

      OneBeacon also maintains a casualty reinsurance program whichthat provides protection for individual risk or catastrophe losses involving workers compensation, general liability, automobile liability or automobileumbrella liability in excess of $5.0$6 million up to $60.0$81 million. This program provides one full $55.0 million limitcoverage for either "certified"“certified” or "non-certified"“non-certified” terrorism losses but does not provide coverage for losses resulting from nuclear, biological or chemical attacks.

      In connection with the2001, OneBeacon Acquisition, Aviva caused OneBeacon to purchasepurchased reinsurance contracts with two reinsurance companies rated "AAA" (Extremely Strong)“AAA” (“Extremely Strong”, the highest of twenty-one ratings) by Standard & Poor'sPoor’s and "A+“A++" (Superior)” (“Superior”, the highest of fifteen ratings) by A.M. Best:Best. One contract is a full risk-transferreinsurance cover from National Indemnity Company ("NICO") forwith NICO which entitles OneBeacon to recover up to $2.5 billion in oldultimate loss and LAE incurred related primarily to A&E claims arising from business written by OneBeacon’s predecessor prior to 1992 for asbestos claims and 1987 for environmental claims (the "NICO Cover") and an adverse developmentclaims. As of December 31, 2006, OneBeacon has ceded estimated incurred losses of approximately $2.1 billion to the NICO Cover. The other contract is a reinsurance cover fromwith General Reinsurance Corporation, ("GRC")or GRC, for up to $400.0$570 million onof additional losses occurring inon all claims arising from accident years 2000 and prior (the "GRC Cover").prior. As of December 31, 2006, OneBeacon has ceded estimated incurred losses of $550 million to the GRC Cover. Pursuant to the GRC Cover, OneBeacon is not entitled to recover losses to the full contract limit if such losses are reimbursed by GRC more quickly than anticipated at the time the contract was signed. OneBeacon intends to only seek reimbursement from GRC for claims which result in payment patterns similar to those supporting the recoverables recorded pursuant to the GRC Cover. The economic cost of not submitting certain other eligible claims to GRC is primarily the investment spread between the rate credited by GRC and the rate achieved by OneBeacon on its investments. This cost, if any, is expected to be immaterial.

      Reinsurance contracts do not relieve OneBeacon of its obligation to its ceding companies.policyholders. Therefore, collectibility of balances due from its reinsurers is critical to OneBeacon'sits financial strength. The following table provides a listing of OneBeacon's OneBeacon’stop reinsurers, excluding industry pools and



      associations and affiliates of White Mountains, based upon recoverable amounts, the percentage of total reinsurance recoverables and the reinsurer'sreinsurer’s A.M. Best rating.

      Top Reinsurers ($ in millions)

       Balance at
      December 31,
      2004

       % of Total
       A.M. Best
      Rating(2)

      Subsidiaries of Berkshire (NICO and GRC)(3) $2,109.2 76%A++
      Liberty Mutual and subsidiaries(1)  126.9 5%A
      Tokio Fire and Marine Insurance Company  57.0 2%A++
      American Re-Insurance Company  53.7 2%A+
      Swiss Re  25.9 1%A+
        
       
       

      Top Reinsurers (Millions)

       

      Balance at
      December 31, 2006

       

      % of Total

       

      A.M. Best
      Rating (1)

       

      Subsidiaries of Berkshire (NICO and GRC) (2)

       

      $

      2,217.2

       

      71

      %

      A++

       

      Munich RE America (formerly Amer Re)

       

      59.3

       

      2

      %

      A

       

      Nichido (formerly Tokio Fire and Marine Insurance Company)

       

      52.3

       

      2

      %

      A++

       

      Liberty Mutual and subsidiaries (3)

       

      42.5

       

      1

      %

      A

       

      Swiss Re

       

      22.7

       

      1

      %

      A+

       


      (1)

                A.M. Best ratings as detailed above are: “A++” (Superior, which is the highest of fifteen ratings), “A+” ( Superior, which is the second highest of fifteen ratings) and “A” (Excellent, which is the third highest of fifteen ratings).

      (2)          Includes $404.0 million of Third Party Recoverables, which NICO would pay under the terms of the NICO Cover if they are unable to collect from third party reinsurers. OneBeacon also has an additional $384 million of Third Party Recoverables from various reinsurers, the majority of which are rated “A” or better by A.M. Best.

      (3)At December 31, 2004,2006, OneBeacon had assumed balances payable and expenses payable of approximately $85.3$28.7 million under theits renewal rights agreement with Liberty Agreement.Mutual Insurance Group (“Liberty Mutual”), which expired on October 31, 2003. In the event of a Liberty Mutual'sMutual insolvency, OneBeacon has the right to offset these balances against its reinsurance recoverable due from Liberty Mutual.



      (2)
      A.M. Best ratings as detailed above are: "A++" (Superior, which

      WhiteMountains Re

      White Mountains Re’s reinsurance protection is the highest of fifteen ratings), "A+" (Superior, which is the second highest of fifteen ratings)provided through Folksamerica Re’s quota share retrocessional arrangements with Olympus and "A" (Excellent, which is the third highest of fifteen ratings).

      (3)
      Includes $420.1 million of Third Party Recoverables that NICO would pay under the terms of the NICO Cover if they are unable to collect from the Third Party Reinsurers.

      White Mountains Re

              White Mountains Re has exposure to losses caused by hurricanes, earthquakes, winter storms, windstorms, terrorist actsa newly-formed reinsurer, Helicon Reinsurance Company, Ltd. (“Helicon”) and other catastrophic events. In the normal course of business, White Mountains Re seeks to reduce the riskthrough excess of loss that may arise from catastrophes or other events that cause unfavorable underwriting resultsprotection purchased by reinsuring certain levels of risk in various areas of exposure with other insuranceSirius to cover Sirius’ property catastrophe and reinsurance enterprises and by closely monitoring aggregate property exposures and related PMLs. To manage and analyze aggregate exposures and PML, White Mountains Re utilizes a variety of tools and analyses, including catastrophe modeling software packages. White Mountains Re regularly assesses its concentration of underwriting exposures in catastrophe prone areas and develops strategies to manage this exposure, primarily through limiting accumulation of exposure to acceptable levels and, if deemed necessary, the purchase of catastrophe reinsurance.

              Folksamerica's primaryaviation exposures. These reinsurance protections are through quota share arrangements with Olympus. Folksamerica's retrocessional arrangements with Olympus are designed to increase Folksamerica'sWhite Mountains Re’s underwriting capacity, to capitalize on the improved pricing trends that accelerated after the Attackswhere appropriate, and to reduce its potential loss exposure to any large, or series of smaller, property catastrophe events.

      Under White Mountains Re’s 2006 arrangements with Olympus and Helicon, Folksamerica Re ceded 35% of its 2006 underwriting year short-tailed excess of loss business, mainly property and marine. Olympus and Helicon shared approximately 56% and 44%, respectively, in the quota share agreements2006 underwriting year cession. Under White Mountains Re’s 2005 arrangements with Olympus, Folksamerica cedesRe ceded up to 75% of substantially all of its 2005 underwriting year short-tailed excess of loss business, mainly property and marine, and 50% of its 2005 underwriting year proportional property business to Olympus and receives an override commission on the premiums ceded to Olympus.

              Effective April 1, 2004, Sirius International entered into a quota share reinsurance agreement with Olympus. Under this agreement, Sirius International cedesceded 25% of its new and renewal2005 underwriting year short-tailed proportional and excess of loss business to Olympus.business. White Mountains Re receives an override commissionreceived fee income based on the premiums ceded to Olympus.Olympus and Helicon.

      During 2007, Folksamerica Re will continue to cede 35% of its 2007 underwriting year short-tailed excess of lossbusiness, mainly property and marine, with Olympus and Helicon sharing approximately 55% and 45%, respectively, in 2007.

      White Mountains Re is also entitled to receive a profit commission with respect to the profitability of the business recommended to Olympus and Helicon. However, this profit commission arrangement is subject to a deficit carryforward whereby net underwriting losses from one year carryover to future years. As a result of the Gulf Coast hurricanes and several other significant loss events during 2005, Olympus recorded substantial net underwriting losses. Accordingly, White Mountains Re did not record a profit commission from Olympus or Helicon during 2006 or 2005 and does not expect to record profit commissions from Olympus or Helicon for the foreseeable future.

      At December 31, 2006 and 2005, White Mountains Re had $655.0 million and $871.8 million of reinsurance recoverables from Olympus. Included in the December 31, 2005 amount is $640.7 million related to hurricanes Katrina, Rita and Wilma. White Mountains Re’s reinsurance recoverables from Olympus recorded as of December 31, 2006, are fully collateralized in the form of assets in a trust, funds held and offsetting balances payable.

      In 2000, Folksamerica purchased a reinsurance contract from Imagine Re (the "Imagine Cover"“Imagine Cover”) to reduce its statutory operating leverage and protect its surplus from adverse development relating to A&E exposures as well asthe reserves assumed in severalcertain recent acquisitions. In accordance with



      SFAS 113, the amounts related to reserves transferred to Imagine Re for liabilities incurred as a result of past insurable events have been accounted for as retroactive reinsurance. At December 31, 20042006 and 2003, Folksamerica's2005, Folksamerica’s reinsurance recoverables included $260.4$186.9 million and $312.4$221.7 million respectively, recorded under the Imagine Re Cover. All balances due from Imagine are fully collateralized, either with Folksamerica as the beneficiary of invested assets in a trust, with funds held, or through a letter of credit. As of December 31, 2003, the entire $115.0 million limit available under this contract had been fully utilized. At December 31, 20042006 and 2003,2005, Folksamerica had recorded $42.5$29.3 million and $50.6$36.8 million in deferred gains respectively, related to retroactive reinsurance with Imagine Re. White Mountains Re is recognizing these deferred gains into income over the expected settlement period of the underlying claims, and accordingly recognized $8.1$7.5 million, $8.2$5.7 million and $8.5$8.1 million of such deferred gains during 2004, 20032006, 2005 and 2002, respectively.2004.

       ��      Reinsurance contracts do not relieve White Mountains Re of its obligation to its ceding companies. Therefore,collectibility of balances due from its retrocessional reinsurers is critical to White Mountains Re'sRe’s financial strength.The following table provides a listing of White Mountains Re'sRe’s top reinsurers based upon recoverable amounts, the percentage of total recoverables and the reinsurer'sreinsurer’s A.M. Best Rating.

      Top Reinsurers ($ in millions)

       Balance at
      December 31, 2004

       % of Total
       A.M. Best
      Rating(2)

      Olympus(1) $305.0 22%A-
      Imagine Re(1)  260.4 19%A-
      London Life(1)  135.6 10%A
      General Re  71.7 5%A++
      St. Paul Travelers  70.1 5%A
        
       
       

      Top Reinsurers (Millions)

       

      Balance at
      December 31, 2006

       

      % of Total

       

      A.M. Best
      Rating (2)

       

      % Collateralized

       

      Olympus (1)(3)

       

      $

      655.0

       

      52

      %

      N/A

       

      100

      %

      Imagine Re (1)

       

      186.9

       

      15

      %

      A-

       

      100

      %

      London Life (1)

       

      118.9

       

      9

      %

      A

       

      100

      %

      General Re

       

      71.2

       

      6

      %

      A++

       

      3

      %

      St. Paul Travelers Group

       

      63.3

       

      5

      %

      A+

       

      %


      (1)

      Represents non-U.S. insurance entities which balances are fully collateralized through Funds Held, Letters of Credit or Trust Agreements.

      (2)

      A.M. Best ratings as detailed above are: "A+“A++" (Superior, which is the highest of fifteen ratings), "A"“A” (Excellent, which is the third highest of fifteen ratings) and "A-", “A-” (Excellent, which is the fourth highest of fifteen ratings) and “B+” (Very Good, which is the sixth highest of fifteen ratings).

      (3)          Gross of amounts due to Olympus under its indemnity agreement with Folksamerica.



      NOTE 5. Investment Securities

      White Mountains'Mountains’ net investment income is comprised primarily of interest income associated with theWhite Mountains’ fixed maturity investments, of its consolidated insurance and reinsurance operations, dividend income from its equity investments and interest income from its short-termshort-term investments. Net investment income for 2004, 20032006, 2005 and 20022004 consisted of the following:

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Investment income:          
       Fixed maturity investments $304.3 $267.2 $333.9 
       Short-term investments  24.9  16.6  19.3 
       Common equity securities  25.1  9.5  6.6 
       Other  15.0  1.3  11.8 
        
       
       
       
      Total investment income  369.3  294.6  371.6 
       Less investment expenses and other charges  (8.4) (3.7) (5.6)
        
       
       
       
      Net investment income, before tax $360.9 $290.9 $366.0 
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Investment income:

       

       

       

       

       

       

       

      Fixed maturity investments

       

      $

      341.6

       

      $

      332.1

       

      $

      304.3

       

      Short-term investments

       

      63.3

       

      51.7

       

      24.9

       

      Common equity securities

       

      29.8

       

      54.5

       

      25.1

       

      Other

       

      14.7

       

      67.9

       

      15.0

       

      Total investment income

       

      449.4

       

      506.2

       

      369.3

       

      Less investment expenses

       

      (13.9

      )

      (14.7

      )

      (8.4

      )

      Net investment income, pre-tax

       

      $

      435.5

       

      $

      491.5

       

      $

      360.9

       

       

      During the first quarter of 2005, Montpelier Re declared a special dividend of $5.50 per share, payable to holders of both its common shares and warrants to acquire its common shares. White Mountains recorded pre-tax investment income of $74.1 million in the first quarter for this special dividend, of which $34.7 million (relating to its common share investment) was included in net investment income from common equity securities and $39.4 million(relating to its warrant investment) was included in net investment income from other investments. For the year ended December 31, 2006, White Mountains also recorded an aggregate of $3.6 million in pre-tax investment income from Montpelier Re’s regular quarterly dividend.

      The composition of realized investment gains (losses) consisted of the following:



       Year Ended December 31,
       

       

      Year Ended December 31,

       

      Millions

       
      2004
       2003
       2002
       

       

      2006

       

      2005

       

      2004

       

      Fixed maturity investmentsFixed maturity investments $32.2 $102.7 $156.0 

       

      $

      38.2

       

      $

      58.7

       

      $

      32.2

       

      Common equity securitiesCommon equity securities 65.1 37.8 (3.0)

       

      142.0

       

      93.5

       

      100.3

       

      Montpelier common shares 35.2   
      Other investmentsOther investments 48.6 22.1 3.0 

       

      92.5

       

      (39.6

      )

      48.6

       

       
       
       
       
      Net realized investment gains, before tax 181.1 162.6 156.0 

      Net realized investment gains, pre-tax

       

      272.7

       

      112.6

       

      181.1

       

      Income taxes attributable to realized investment gains and lossesIncome taxes attributable to realized investment gains and losses (56.7) (45.2) (33.1)

       

      (74.1

      )

      (54.2

      )

      (56.7

      )

       
       
       
       
      Net realized investment gains, after-tax $124.4 $117.4 $122.9 
       
       
       
       

      Net realized investment gains, after-tax

       

      $

      198.6

       

      $

      58.4

       

      $

      124.4

       

       

      Net realized gains from common equity securities include gains of $5.5 million and losses of $54.8 million on Montpelier Re common shares for 2006 and 2005. Net realized gains from other investments include losses of $.7 million, losses of $110.3 million and gains of $15.7 million on Montpelier Re warrants for 2006, 2005 and 2004 and investment gains of $6.2 million and $10.5 million for 2006 and 2005 on its Symetra warrants.

      White Mountains recognized gross realized investment gains of $229.7$344.4 million, $271.7$356.3 million and $265.2$229.7 million and gross realized investment losses of $48.6$71.7 million, $109.1$243.7 million and $109.2$48.6 million on sales of investment securities during 2004, 20032006, 2005 and 2002, respectively.2004. Of the $243.7 million in losses realized during 2005, $110.3 million related to the Company’s investment in Montpelier Re warrants, $54.8 million of other-than-temporary impairment related to White Mountains’ investment in Montpelier Re common shares and $11.4 million of foreign exchange losses.

      In 2001, the Company received warrants to acquire 4,781,572 common shares of Montpelier Re at $16.67 pershare (as adjusted for stock splits) that are exercisable until December 2011. During the first quarter of 2004, White Mountains sold 4.5 million common shares of Montpelier Re to third parties for net proceeds of $155.3 million, resulting in a pretax realized investment gain of $35.2 million. Also during the first quarter of 2004, White Mountains purchased additional warrants to acquire 2,390,786 common shares of Montpelier Re from an existing warrant holder for $54.1 million in cash, thereby raising the total number of such warrants owned by White Mountains to 7,172,358.


      The following table summarizes the carrying value of White Mountains'Mountains’ investment in Montpelier Re as of December 31, 20042006 and December 31, 2003:2005:

       

      As of December 31, 2006

       

      As of December 31, 2005

       


       As of December 31, 2004
       As of December 31, 2003

       

       

       

      Carrying

       

      Fair

       

       

       

      Carrying

       

      Fair

       

      Millions

       Shares
       Carrying
      Value

       Fair
      Value

       Shares
       Carrying
      Value

       Fair
      Value

      Millions

       

      Shares

       

      Value

       

      Value

       

      Shares

       

      Value

       

      Value

       

      Montpelier                

      Montpelier Re

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Common shares 6.3 $235.4 $235.4 10.8 $282.7 $396.3

      Common shares

       

      0.9

       

      $

      17.0

       

      $

      17.0

       

      6.3

       

      $

      115.9

       

      $

      115.9

       

      Warrants to acquire common shares 7.2  160.9  160.9 4.8  90.5  90.5

      Warrants to acquire common shares

       

      7.2

       

      49.9

       

      49.9

       

      7.2

       

      50.6

       

      50.6

       

       
       
       
       
       
       
      Total 13.5 $396.3 $396.3 15.6 $373.2 $486.8

      Total

       

      8.1

       

      $

      66.9

       

      $

      66.9

       

      13.5

       

      $

      166.5

       

      $

      166.5

       

       
       
       
       
       
       

       White Mountains accounts for its Montpelier and Symetra warrants (see Note 2) under FAS 133 as a component of other investments, recording the instruments at fair value with changes in fair value recognized through the income statement as a realized investment gain or loss. The Montpelier and Symetra warrants are valued using the Black-Scholes valuation method. The major assumptions used in valuing the Montpelier warrants were a risk-free rate of 3.25%, volatility of 30% and an expected life of approximately 3 years. The major assumptions used in valuing the Symetra warrants were a risk-free rate of 3.63%, volatility of 29% and an expected life of approximately 5 years.

              White Mountains recorded investment gains of $15.7 million, $32.5 million and $58.0 million for the years ended December 31, 2004, 2003 and December 31, 2002, respectively related to its Montpelier warrants. White Mountains recorded an investment gain of $1.9 million for the year ended December 31, 2004 related to its Symetra warrants.

      As of December 31, 20042006 and 2003,2005, White Mountains reported $30.9$66.8 million and $371.6$43.4 million respectively, in accounts payable on unsettled investment purchases and $19.9$8.5 million and $9.1$21.7 million respectively in accounts receivable on unsettled investment sales. The 2003 payable related primarily to



      an unsettled purchase of a Swedish Treasury Bill bought with funds used to purchase Sirius previous to the closing of the acquisition, which was included in short-term investments at December 31, 2003.

              Net realized investment gains were reduced by mark-to-market realized losses of $4.2 million and $47.4 million for the years ended December 31, 2003 and 2002, respectively in connection with White Mountains' interest rate swap agreements, which were undertaken to achieve a fixed interest rate on the Old Bank Facility. These interest rate swaps were terminated in May 2003 in connection with the repayment of the Old Bank Facility. Additionally, OneBeacon recorded a $5.4 million write-down of its surplus note investment in New Jersey Skylands Insurance Association during 2003, which is reflected in White Mountains' net realized investment gains.

      The components of White Mountains'Mountains’ change in unrealized investment gains, after-tax, as recorded on the statements of income and comprehensive income were as follows:

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Net change in pretax unrealized gains for investment securities held $250.0 $235.9 $448.2 
      Net change in pretax unrealized gains from investments in unconsolidated affiliates held  51.6  5.1  9.3 
        
       
       
       
       Net change in pretax unrealized investment gains for investments held  301.6  241.0  457.5 
      Income taxes attributable to investments held  (83.6) (77.9) (158.8)
        
       
       
       
       Net change in unrealized gains for investments held, after-tax  218.0  163.1  298.7 
        
       
       
       

      Recognition of pretax net unrealized gains for investments sold

       

       

      (129.6

      )

       

      (134.0

      )

       

      (144.8

      )
      Income taxes attributable to investments sold  41.7  46.7  49.8 
        
       
       
       
      Recognition of net unrealized gains for investments sold, after-tax  (87.9) (87.3) (95.0)
        
       
       
       

      Change in net unrealized investment gains, after-tax

       

       

      130.1

       

       

      75.8

       

       

      203.7

       

      Change in net unrealized foreign currency gains (losses), after-tax

       

       

      48.8

       

       

      3.2

       

       

      (1.4

      )
      Net realized investment gains, after-tax  124.4  117.4  122.9 
        
       
       
       
      Total investment gains recorded during the period, after-tax $303.3 $196.4 $325.2 
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Net change in pre-tax unrealized gains for investment securities held

       

      $

      225.7

       

      $

      (25.1

      )

      $

      250.0

       

      Net change in pre-tax unrealized gains (losses) from investments in unconsolidated affiliates

       

      (38.3

      )

      (45.3

      )

      51.6

       

      Net change in pre-tax unrealized investment gains (losses) for investments held

       

      187.4

       

      (70.4

      )

      301.6

       

      Income taxes attributable to investments held

       

      139.6

       

      19.6

       

      (83.6

      )

      Net change in unrealized gains (losses) for investments held, after-tax

       

      327.0

       

      (50.8

      )

      218.0

       

       

       

       

       

       

       

       

       

      Recognition of pre-tax net unrealized gains for investments sold

       

      (217.8

      )

      (190.1

      )

      (129.6

      )

      Income taxes attributable to investments sold

       

      61.8

       

      58.7

       

      41.7

       

      Recognition of net unrealized gains for investments sold, after-tax

       

      (156.0

      )

      (131.4

      )

      (87.9

      )

       

       

       

       

       

       

       

       

      Change in net unrealized investment gains (losses), after-tax

       

      171.0

       

      (182.2

      )

      130.1

       

       

       

       

       

       

       

       

       

      Change in net unrealized foreign currency gains (losses) on investments, after-tax

       

      77.6

       

      (39.5

      )

      23.7

       

      Net realized investment gains, after-tax

       

      198.6

       

      58.4

       

      124.4

       

      Total investment gains (losses) recorded during the period, after-tax

       

      $

      447.2

       

      $

      (163.3

      )

      $

      278.2

       

       

      The components of White Mountains'Mountains’ ending net unrealized investment gains and losses on its investment portfolio and its investments in unconsolidated insurance affiliates were as follows:



       December 31,
       

       

      December 31,

       

      Millions

      Millions

       

       

      2006

       

      2005

       

      2004
       2003
       
      Investment securities:Investment securities:     

       

       

       

       

       

      Gross unrealized investment gains $551.7 $410.4 
      Gross unrealized investment losses (26.3) (7.4)
       
       
       

      Gross unrealized investment gains

       

      $

      353.6

       

      $

      368.4

       

      Gross unrealized investment losses

       

      (52.2

      )

      (68.8

      )

      Net unrealized gains from investment securitiesNet unrealized gains from investment securities 525.4 403.0 

       

      301.4

       

      299.6

       

      Net unrealized gains from investments in unconsolidated insurance affiliatesNet unrealized gains from investments in unconsolidated insurance affiliates 67.2 17.6 

       

      .3

       

      32.5

       

       
       
       
      Total net unrealized investment gains, before tax 592.6 420.6 
       Income taxes attributable to such gains (176.5) (134.6)
       
       
       
      Total net unrealized investment gains, after-tax $416.1 $286.0 
       
       
       

      Total net unrealized investment gains, before tax

       

      301.7

       

      332.1

       

      Income taxes attributable to such gains

       

      (103.2

      )

      (98.2

      )

      Minority interest

       

      (4.5

      )

       

      Total net unrealized investment gains, after-tax

       

      $

      194.0

       

      $

      233.9

       


      The cost or amortized cost, gross unrealized investment gains and losses, and carrying values of White Mountains'Mountains’ fixed maturity available-for-sale investments as of December 31, 20042006 and 2003,2005, were as follows:

       
       December 31, 2004
      Millions

       Cost or
      amortized
      cost

       Gross
      unrealized
      gains

       Gross
      unrealized
      losses

       Net
      foreign
      currency
      gains

       Carrying
      value

      U.S. Government obligations $2,362.3 $40.5 $(8.2)$ $2,394.6
      Debt securities issued by industrial corporations  3,695.4  122.7  (6.2) 33.6  3,845.5
      Municipal obligations  91.3  1.8  (0.4)   92.7
      Asset-backed securities  681.9  1.0  (3.4)   679.5
      Foreign government obligations  780.3  15.2  (1.3)   794.2
      Preferred stocks  72.9  13.5    7.1  93.5
        
       
       
       
       
       Total fixed maturity investments $7,684.1 $194.7 $(19.5)$40.7 $7,900.0
        
       
       
       
       
       
       December 31, 2003
      Millions

       Cost or
      amortized
      cost

       Gross
      unrealized
      gains

       Gross
      unrealized
      losses

       Net
      foreign
      currency
      gains

       Carrying
      value

      U.S. Government obligations $2,089.3 $53.6 $(3.7)$ $2,139.2
      Debt securities issued by industrial corporations  2,686.7  160.7  (2.2)   2,845.2
      Municipal obligations  53.1  4.5      57.6
      Asset-backed securities  959.4  3.8  (.2)   963.0
      Foreign government obligations  141.1  3.8      144.9
      Preferred stocks  80.6  12.8  (.3) 5.1  98.2
        
       
       
       
       
       Total fixed maturity investments $6,010.2 $239.2 $(6.4)$5.1 $6,248.1
        
       
       
       
       

       

       

      December 31, 2006

       

      Millions

       

      Cost or
      amortized
      cost

       

      Gross
      unrealized
      gains

       

      Gross
      unrealized
      losses

       

      Net foreign
      currency
      gains
      (losses)

       

      Carrying
      value

       

      U.S. Government obligations

       

      $

      1,651.3

       

      $

      5.0

       

      $

      (11.9

      )

      $

       

      $

      1,644.4

       

      Debt securities issued by industrial corporations

       

      2,478.3

       

      21.8

       

      (23.6

      )

      25.4

       

      2,501.9

       

      Municipal obligations

       

      15.5

       

      .5

       

       

       

      16.0

       

      Asset-backed securities

       

      2,899.1

       

      10.8

       

      (7.5

      )

      2.3

       

      2,904.7

       

      Foreign government obligations

       

      657.2

       

      2.1

       

      (6.1

      )

      55.2

       

      708.4

       

      Preferred stocks

       

      111.5

       

      17.1

       

      (.4

      )

      7.9

       

      136.1

       

      Total fixed maturity investments

       

      $

      7,812.9

       

      $

      57.3

       

      $

      (49.5

      )

      $

      90.8

       

      $

      7,911.5

       

       

       

       

      December 31, 2005

       

      Millions

       

      Cost or
      amortized
      cost

       

      Gross
      unrealized
      gains

       

      Gross
      unrealized
      losses

       

      Net foreign
      currency
      gains
      (losses)

       

      Carrying
      value

       

      U.S. Government obligations

       

      $

      1,785.9

       

      $

      6.6

       

      $

      (16.5

      )

      $

       

      $

      1,776.0

       

      Debt securities issued by industrial corporations

       

      2,843.4

       

      78.2

       

      (28.5

      )

      (25.1

      )

      2,868.0

       

      Municipal obligations

       

      66.6

       

      .9

       

      (.6

      )

       

      66.9

       

      Asset-backed securities

       

      2,124.5

       

      3.4

       

      (16.1

      )

      5.1

       

      2,116.9

       

      Foreign government obligations

       

      683.0

       

      8.0

       

      (3.1

      )

      .2

       

      688.1

       

      Preferred stocks

       

      45.0

       

      17.8

       

      (.2

      )

      4.2

       

      66.8

       

      Total fixed maturity investments

       

      $

      7,548.4

       

      $

      114.9

       

      $

      (65.0

      )

      $

      (15.6

      )

      $

      7,582.7

       

      The trust account investments comprise $305.0 million of fixed maturity investments and $33.9 million of short-term investments, classified as held-to-maturity. The carrying value, gross unrealized investment gains and losses, and estimated fair values of these investments as of December 31, 2006, were as follows:

       

       

      December 31, 2006

       

      Millions

       

      Carrying
      value

       

      Gross
      unrealized
      gains

       

      Gross
      unrealized
      losses

       

      Net foreign
      currency
      gains
      (losses)

       

      Estimated
      fair
      value

       

      U.S. Government obligations - fixed maturities

       

      $

      305.0

       

      $

       

      $

      (1.0

      )

      $

       

      $

      304.0

       

      U.S. Government obligations - short-term

       

      $

      33.9

       

      $

       

      $

       

      $

       

      $

      33.9

       

      Total trust account investments

       

      $

      338.9

       

      $

       

      $

      (1.0

      )

      $

       

      $

      337.9

       

      The cost or amortized cost and carrying value of White Mountains'Mountains’ fixed maturity available-for-sale investments at December 31, 20042006 is presented below by contractual maturity. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.

       
       December 31, 2004
      Millions

       Cost or
      amortized
      cost

       Carrying
      value

      Due in one year or less $521.3 $522.6
      Due after one year through five years  4,123.5  4,200.0
      Due after five years through ten years  1,715.3  1,797.4
      Due after ten years  569.2  607.1
      Asset-backed securities  681.9  679.4
      Preferred stocks  72.9  93.5
        
       
      Total $7,684.1 $7,900.0
        
       

       

       

       

      December 31, 2006

       

      Millions

       

      Cost or
      amortized cost

       

      Carrying
      value

       

      Due in one year or less

       

      $

      432.4

       

      $

      449.2

       

      Due after one year through five years

       

      2,766.6

       

      2,810.7

       

      Due after five years through ten years

       

      1,135.7

       

      1,139.6

       

      Due after ten years

       

      467.6

       

      471.2

       

      Asset-backed securities

       

      2,899.1

       

      2,904.7

       

      Preferred stocks

       

      111.5

       

      136.1

       

      Total

       

      $

      7,812.9

       

      $

      7,911.5

       

      The carrying value and estimated fair value of White Mountains’ held-to-maturity, trust account investments at December 31, 2006 is presented below by contractual maturity.

       

       

      December 31, 2006

       

      Millions

       

      Carrying
      value

       

      Estimated
      fair value

       

      Due in one year or less

       

      $

      47.2

       

      $

      47.2

       

      Due after one year through five years

       

      291.7

       

      290.7

       

      Due after five years through ten years

       

       

       

      Due after ten years

       

       

       

      Total

       

      $

      338.9

       

      $

      337.9

       

      The cost or amortized cost, gross unrealized investment gains and losses, and carrying values of White Mountains'Mountains’ common equity securities and other investments as of December 31, 20042006 and 2003,2005, were as follows:

       
       December 31, 2004
      Millions

       Cost or
      amortized
      cost

       Gross
      unrealized
      gains

       Gross
      unrealized
      losses

       Net
      foreign
      currency
      gains

       Carrying
      value

      Common equity securities $775.9 $267.6 $(2.1)2.5 $1,043.9
        
       
       
       
       
      Other investments $442.7 $89.4 $(4.7) $527.4
        
       
       
       
       
       
       December 31, 2003
      Millions

       Cost or
      amortized
      cost

       Gross
      unrealized
      gains

       Gross
      unrealized
      losses

       Net
      foreign
      currency
      gains

       Carrying
      value

      Common equity securities $396.2 $115.4 $(.4)2.4 $513.6
        
       
       
       
       
      Other investments $184.0 $55.8 $(.6) $239.2
        
       
       
       
       

       

       

      December 31, 2006

       

      Millions

       

      Cost or
      amortized
      cost

       

      Gross
      unrealized
      gains

       

      Gross
      unrealized
      losses

       

      Net foreign
      currency
      gains

       

      Carrying
      Value

       

      Common equity securities

       

      $

      972.0

       

      $

      237.2

       

      $

      (1.3

      )

      $

      4.7

       

      $

      1,212.6

       

       

       

       

       

       

       

       

       

       

       

       

       

      Other investments

       

      $

      467.1

       

      $

      59.1

       

      $

      (1.4

      )

      $

       

      $

      542.8

       

       

       

       

      December 31, 2005

       

      Millions

       

      Cost or
      amortized
      cost

       

      Gross
      unrealized
      gains

       

      Gross
      unrealized
      losses

       

      Net foreign
      currency
      gains

       

      Carrying
      Value

       

      Common equity securities

       

      $

      796.5

       

      $

      175.3

       

      $

      (2.9

      )

      $

      (1.1

      )

      $

      967.8

       

       

       

       

       

       

       

       

       

       

       

       

       

      Other investments

       

      $

      510.8

       

      $

      78.2

       

      $

      (.9

      )

      $

       

      $

      588.1

       


      White Mountains'Mountains’ consolidated insurance and reinsurance operations are required to maintain deposits with certain insurance regulatory agencies in order to maintain their insurance licenses. The fair value of such deposits totalled $940.3$352.7 million and $592.7$473.2 million as of December 31, 20042006 and 2003, respectively.2005.

      Sales and maturities of investments, excluding short-term investments, totalled $7,466.8$6,236.4 million, $18,662.5$6,963.9 million and $13,943.8$8,024.1 million for the years ended December 31, 2004, 20032006, 2005 and 2002, respectively.2004. There were no non-cash exchanges or involuntary sales of investment securities during 2004, 20032006, 2005 or 2002.2004.

      The Company participates in a securities lending program whereby it loans investment securities to other institutions for short periods of time. The Company receives a fee from the borrower in return for the use of its assets and its policy is to require collateral equal to approximately 102% of the fair value of the loaned securities, which is held by a third party. All securities loaned can be redeemed on short notice. The total market value of the Company'sCompany’s securities on loan at December 31, 20042006 was $580.7$636.1 million with corresponding collateral of $593.3$649.8 million.

      Impairment

      Impairment

      White Mountains'Mountains’ portfolio of fixed maturity investments is comprised primarily of investment grade corporate debt securities, U.S. government and agency securities and mortgage-backed securities and are classified as available for sale. At December 31, 2004,2006, approximately 99% of White Mountains'Mountains’ fixed maturity investments received an investment grade rating from S&PStandard and Poor’s or from Moody'sMoody’s Investor Services if a given security iswas unrated by S&P.Standard & Poor’s. White Mountains expects to continue to invest primarily in high quality, fixed maturity investments. Nearly all the fixed maturity investments currently held by White Mountains are publicly traded, and as such are considered to be liquid.


      Temporary losses on investment securities are recorded as unrealized losses. Temporary losses do not impact net income and earnings per common share but serve to reduce comprehensive net income, shareholders'shareholders’ equity and tangible book value. Unrealized losses subsequently identified as other-than-temporary impairments are recorded as realized losses. Other-than-temporary impairments previously recorded as unrealized losses do not impact comprehensive net income, shareholders'shareholders’ equity and tangible book value but serve to reduce net income and earnings per common share.

      White Mountains'Mountains’ methodology of assessing other-than-temporary impairments is based on security-specific facts and circumstances as of the balance sheet date. As a result, subsequent adverse changes in an issuers'issuers’ credit quality or subsequent weakening of market conditions that differ from expectations could result in additional other-than-temporaryother­than-temporary impairments. In addition, the sale of a fixed maturity security with a previously recorded unrealized loss would result in a realized loss. Either of these situations would adversely impact net income and earnings per common share but would not impact comprehensive net income, shareholders'shareholders’ equity or tangible book value.

      The following table presents an analysis of the continuous periods during which White Mountains has heldinvestment positions which were carried at an unrealized loss as of December 31, 20042006 (excluding short-term investments):

       
       December 31, 2004
       
      $ in millions

       0-6
      Months

       6-12
      Months

       > 12
      Months

       Total
       
      Fixed maturity investments:             
       Number of positions  209  166  6  381 
       Market value $1,678.2 $787.0 $38.4 $2,503.6 
       Amortized cost $1,686.8 $797.0 $39.3 $2,523.1 
       Unrealized loss $(8.6)$(10.0)$(.9)$(19.5)
        
       
       
       
       
      Common equity securities:             
       Number of positions  10  2    12 
       Market value $8.9 $6.7 $ $15.6 
       Amortized cost $10.9 $6.8 $ $17.7 
       Unrealized loss $(2.0)$(.1)$ $(2.1)
        
       
       
       
       
      Other investments:             
       Number of positions  7  4    11 
       Market value $31.5 $7.2 $ $38.7 
       Amortized cost $35.8 $7.6 $ $43.4 
       Unrealized loss $(4.3)$(.4)$ $(4.7)
        
       
       
       
       
      Total:             
       Number of positions  226  172  6  404 
       Market value $1,718.6 $800.9 $38.4 $2,557.9 
       Amortized cost $1,733.5 $811.4 $39.3 $2,584.2 
       Unrealized loss $(14.9)$(10.5)$(.9)$(26.3)
        
       
       
       
       
      % of total gross unrealized losses  56.7% 39.9% 3.4% 100.0%
        
       
       
       
       

              During the year ended December 31, 2004, White Mountains experienced $3.0 million in pre-tax, other-than-temporary impairment charges, comprised of $2.5 million taken on equity securities, and $.5 million on several limited partnership investments included in other investments. Of the charge taken on equity securities, $1.3 million was related to White Mountains' investment in the common stock of Callaway Golf Company and the remaining $1.2 million related to two other equity positions, neither of which were individually significant. White Mountains recorded the other-than-temporary impairments primarily due to the fact that the unrealized loss position on these securities was greater



      than 20% of White Mountains' cost over the previous six-month period and also that certain factors have been reported by those companies which affect the likelihood that White Mountains will recover the original cost of its investment. White Mountains did not experience any other material impairment charges relating to any other individual investment security during the three years ended December 31, 2004.

       

       

      December 31, 2006

       

       

       

      0-6

       

      6-12

       

      > 12

       

       

       

      ($ in millions)

       

      Months

       

      Months

       

      Months

       

      Total

       

      Fixed maturity investments:

       

       

       

       

       

       

       

       

       

      Number of positions

       

      245

       

      79

       

      328

       

      652

       

      Market value

       

      $

      1,947.8

       

      $

      565.4

       

      $

      2,207.5

       

      $

      4,720.7

       

      Amortized cost

       

      $

      1,953.3

       

      $

      569.1

       

      $

      2,247.8

       

      $

      4,770.2

       

      Unrealized loss

       

      $

      (5.5

      )

      $

      (3.7

      )

      $

      (40.3

      )

      $

      (49.5

      )

      Common equity securities:

       

       

       

       

       

       

       

       

       

      Number of positions

       

      52

       

      3

       

       

      55

       

      Market value

       

      $

      64.4

       

      $

      .1

       

      $

       

      $

      64.5

       

      Amortized cost

       

      $

      65.7

       

      $

      .1

       

      $

       

      $

      65.8

       

      Unrealized loss

       

      $

      (1.3

      )

      $

       

      $

       

      $

      (1.3

      )

      Other investments:

       

       

       

       

       

       

       

       

       

      Number of positions

       

      1

       

      2

       

      2

       

      5

       

      Market value

       

      $

      3.8

       

      $

      17.6

       

      $

      2.9

       

      $

      24.3

       

      Amortized cost

       

      $

      3.8

       

      $

      18.4

       

      $

      3.5

       

      $

      25.7

       

      Unrealized loss

       

      $

       

      $

      (.8

      )

      $

      (.6

      )

      $

      (1.4

      )

      Total:

       

       

       

       

       

       

       

       

       

      Number of positions

       

      298

       

      84

       

      330

       

      712

       

      Market value

       

      $

      2,016.0

       

      $

      583.1

       

      $

      2,210.4

       

      $

      4,809.5

       

      Amortized cost

       

      $

      2,022.8

       

      $

      587.6

       

      $

      2,251.3

       

      $

      4,861.7

       

      Unrealized loss

       

      $

      (6.8

      )

      $

      (4.5

      )

      $

      (40.9

      )

      $

      (52.2

      )

      % of total gross unrealized losses

       

      13.0

      %

      8.6

      %

      78.4

      %

      100.0

      %

      White Mountains believes that the gross unrealized losses relating to its fixed maturity investments at December 31, 20042006 resulted primarily from increases in market interest rates from the dates that certain investments within that portfolio were acquired as opposed to fundamental changes in the credit quality of the issuers of such securities. Therefore,White Mountains views these decreases in value are viewed as being temporary because White Mountains it has the intent and ability to retain such investments foruntil recovery. However, should White Mountains determine that it no longer has the intent and ability to hold a period of time sufficient to allow for any anticipated recoveryfixed maturity investment that has an existing unrealized loss resulting from an increase in market value.interest rates until it recovers, this loss would be realized through the income statement at the time such determination is made. White Mountains also believes that the gross unrealized losses recorded on its common equity securities and its other investments at December 31, 20042006 resulted primarily from decreases in quoted market values from the dates that certain investments securities within that portfolio were acquired as opposed to fundamental changes in the issuer'sissuer’s financial performance and near-term financial prospects. Therefore, these decreases are also viewed as being temporary. However, due to the inherent risk involved in investing in the equity markets, it is possible that the decrease in market value of these investments may ultimately prove to be other than temporary. As ofAt December 31, 2004,2006, White Mountains'Mountains’ investment portfolio did not include any investment securities with an after-tax unrealized loss of more than $2.0 million.$3.0 million for more than a six-month period.

      F-37





      NOTE 6. Debt

              DebtWhite Mountains’ debt outstanding as of December 31, 20042006 and 20032005 consisted of the following:



       December 31,
       

       

      December 31,

       

      Millions

      Millions

       

       

      2006

       

      2005

       

      2004
       2003
       
      Senior Notes, face value $700.0 $700.0 

      Senior Notes, at face value

       

      $

      700.0

       

      $

      700.0

       

      Unamortized original issue discount

       

      (1.3

      )

      (1.5

      )

      Senior Notes, carrying value

       

      698.7

       

      698.5

       

      Unamortized original issue discount (1.7) (1.9)

       

       

       

       

       

       
       
       
       Senior Notes, carrying value 698.3 698.1 
       
       
       

      WTM Bank Facility

       

      320.0

       

       

      FAC Bank Facility

       

       

       

      Mortgage Note

       

      40.8

       

      18.4

       

      Sierra NoteSierra Note 50.0  

       

      27.2

       

      27.2

       

      Atlantic Specialty NoteAtlantic Specialty Note 20.0  

       

      20.0

       

      20.0

       

      C-F Seller Note  25.0 
      Fund III notes 15.0 15.0 
      Other debtOther debt  4.9 

       

       

      15.0

       

       
       
       
       Total debt $783.3 $743.0 
       
       
       

      Total debt

       

      $

      1,106.7

       

      $

      779.1

       

       

      A schedule of contractual repayments of White Mountains'Mountains’ debt as of December 31, 20042006 follows:

       

      December 31,

       

      Millions

       December 31,
      2004

       

      2006

       

      Due in one year or less $

       

      $

      2.0

       

      Due in two to three years 17.0

       

      31.9

       

      Due in four to five years 4.0

       

      325.6

       

      Due after five years 764.0

       

      748.5

       

       
      Total $785.0

       

      $

      1,108.0

       

       


      Senior Notes

      In May 2003, Fund American Companies, Inc. (“Fund American”), a wholly-owned subsidiary of OneBeacon Ltd., issued $700.0 million face value of senior unsecured debt through a public offering, at an issue price of 99.7% (the “Senior Notes”). The Senior Notes bear an annual interest rate of 5.9%,



      payable semi-annually in arrears on May 15 and November 15, until maturity onin May 15, 2013, and are2013. Pursuant to the offering of the Senior Notes, White Mountains fully and unconditionally guaranteed as to the payment of principal and interest byon the Company. Senior Notes. Following the OneBeacon Offering, White Mountains continues to guarantee the payment of principal and interest on the Senior Notes. OneBeacon Ltd. pays White Mountains a guarantee fee equal to 25 basis points per annum on the outstanding principal amount of the Senior Notes. If White Mountains’ voting interest in OneBeacon Ltd.’s common shares ceases to represent more than 50% of all their voting securities, OneBeacon Ltd. will seek to redeem, exchange or otherwise modify the senior notes in order to fully and permanently eliminate White Mountains’ obligations under its guarantee. In the event that White Mountains’ guarantee is not eliminated, the guarantee fee will increase over time up to a maximum of 450 basis points.

      Fund American incurred $7.3 million in expenses related to the issuance of the Senior Notes (including the $4.5 million underwriting discount), which have been deferred and are being recognized into interest expense over the life of the Senior Notes. Taking into effect the amortization of the original issue discount and all underwriting and issuance expenses, the Senior Notes have an effective yield to maturity of approximately 6.0% per annum.


      Bank Facility
      Facilities

      In September 2003,connection with the OneBeacon Offering, White Mountains and Fund American terminated their existing $400 million credit facility, under which they were both permitted borrowers, and replaced it with two credit facilities, as described below.

      In November 2006, White Mountains and White Mountains Re Group, Ltd., as co-borrowers and co-guarantors, established a $500 million revolving credit facility that matures in November 2011 (the “WTM Bank Facility”). As of December 31, 2006, White Mountains had $320 million outstanding on this facility, which bears interest at a current rate of 5.9%. White Mountains incurred $2.5 million of interest expense on this borrowing during 2006.


      In November 2006, Fund American established a $300.0$75 million revolving credit facility that matures in November 2011 (the "Bank Facility"“FAC Bank Facility”). All borrowings under this facility are guaranteed by OneBeacon Ltd. As of December 31, 2006, the FAC Bank Facility was undrawn.

      Mortgage Note

      In December 2005, OneBeacon entered into a $40.8 million, 18-year mortgage note, which both Fund Americanhas a variable interest rate based upon the lender’s 30-day LIBOR rate, to purchase land and its U.S. headquarters building in Canton, Massachusetts. As of December 31, 2006, OneBeacon had drawn down the entire $40.8 million available under the mortgage note. Repayment will commence on January 31, 2009.

      Concurrent with entering into the mortgage note, OneBeacon also entered into an interest rate swap to hedge its exposure to variability in the interest rate on the mortgage note. The notional amount of the swap is equal to the debt outstanding on the mortgage note and will be adjusted to match the drawdowns and repayments on the mortgage note so that the principal amount of the mortgage note and the Company are permitted borrowers. In August 2004, Fund American restructured and re-syndicated the Bank Facility to increase the availability under the revolving credit facility to $400.0 million and to extend the maturity from September 2006 to August 2009. Under the Bank Facility, the Company guarantees all obligations of Fund American, and Fund American guarantees all borrowingsnotional amount of the Company, subject to certain limitations imposed byswap are equal at all times. Under the terms of the Berkshire Preferred Stock. Asswap, OneBeacon pays a fixed interest rate of approximately 6% and receives a variable interest rate based on the same LIBOR index used for the mortgage note. Interest paid or received on the swap is reported in interest expense. Changes in the fair value of the interest rate swap, which was a $.6 million gain, after tax and net of minority interest, for the year ended December 31, 2004, the Bank Facility was undrawn.2006, is reported as a component of other comprehensive income.


      Sierra Note
      Other Debt of Operating Subsidiaries

      In connection with its acquisition of the Sierra Group on March 31, 2004, Folksamerica entered into a $62.0 million purchase note (the "Sierra Note"“Sierra Note”), $58.0 million of which willmay be adjusted over its approximate six-year term to reflect favorable or adverse loss reserve development on the acquired reserve portfolio and run-off of remaining policies in force (mainly workers compensation business), as well as certain other balance sheet protections. During 2004,Since the closing of this acquisition, the Sierra Note washas been reduced by $12.0$34.8 million as a result of adverse development on the acquired reserves and run-off of unearned premium.premium, $22.8 million of which occurred during 2005. Interest will accrueaccrues on the unpaid balance of the Sierra Note at a rate of 4.0% per annum, compounded quarterly, and will beis payable at its maturity.

      Atlantic Specialty Note

      In connection with its acquisition of Atlantic Specialty on March 31, 2004, OneBeacon issued a $20.0 million ten-year note to the seller (the "Atlantic“Atlantic Specialty Note"Note”). OneBeacon is required to repay $2.0 million of principal on the notes per year, commencing with the first payment due on January 1, 2007. The note accrues interest at a rate of 5.2%, except that the outstanding principal amount in excess of $15.0 million accrues interest at a rate of 3.6%.

              OBPPOther Debt

      OneBeacon Professional Partners (“OBPP”) and Folksamerica Specialty Underwriting, Inc. ("FSUI"(“FSUI”) havehad borrowed $8.0 million and $7.0 million, respectively, from Dowling & Partners Connecticut Fund III, LP ("(“Fund III"III”) in connection with an incentive program sponsored by the State of Connecticut known as the Connecticut Insurance Reinvestment Act (the "CIR Act"“CIR Act”). The CIR Act provides for Connecticut income tax credits to be granted for qualifying investments made by approved fund managers. TheThese loans made by Fund III to OBPP and FSUI are qualifying investments and, together, have the potential to generate up to $15 million of tax credits that would be shared equally between Fund III on the one hand and OBPP and FSUI on the other. The borrowings mature in April 2007 and bear interest at the option of OBPP and FSUI at either (1) the greater of (a) the prime rate minus 1% and (b) the federal funds rate minus 0.50% or (2) the eurodollar rate plus 0.325%.were repaid during 2006.

              In connection with its acquisition of C-F Insurance Company in September 2001, Folksamerica issued a $25.0 million note to the seller (the "C-F Seller Note".) On August 27, 2004, Folksamerica paid off the remaining balance of this note.



      Interest
      Interest

      Total interest expense incurred by White Mountains for its indebtedness was $50.1 million, $44.5 million and $49.1 million $48.6 millionin 2006, 2005 and $71.8 million in 2004, 2003 and 2002, respectively.2004. Total interest paid by White Mountains for its indebtedness was $47.5 million, $44.7 million and $48.9 million $45.8 millionin 2006, 2005 and $79.8 million in 2004, 2003 and 2002, respectively.2004.


      NOTE 7. Income Taxes

      The Company is domiciled in Bermuda and has subsidiaries domiciled in several countries. The majority of the Company'sCompany’s worldwide operations are taxed in the United States. Income earned or losses incurred by non-U.S. companies will generally be subject to an overall effective tax rate lower than that imposed by the United States.

      The total income tax provision (benefit) for the years ended December 31, 2004, 20032006, 2005 and 20022004 consisted of the following:

       
       Year Ended December 31,
      Millions

       2004
       2003
       2002
      U.S. income tax provision $19.5 $114.2 $4.7
      State and local income tax provision  1.0  .1  
      U.S. withholding tax and foreign income tax provision  26.5  13.3  7.0
        
       
       
       Total income tax provision $47.0 $127.6 $11.7
        
       
       
      Net Federal income tax receipts (payments) $(86.5)$27.4 $189.6
        
       
       

       The components of the income tax provision (benefit) on pretax earnings follow:

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Current $106.0 $22.6 $(152.2)
      Deferred  (59.0) 105.0  163.9 
        
       
       
       
       Total income tax provision on pretax earnings $47.0 $127.6 $11.7 
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Current tax provision (benefit):

       

       

       

       

       

       

       

      Federal

       

      $

      29.8

       

      $

      (30.0

      )

      $

      79.2

       

      State

       

      (1.8

      )

      (1.0

      )

      1.0

       

      Non-U.S.

       

      18.3

       

      39.3

       

      25.8

       

      Total current tax provision

       

      46.3

       

      8.3

       

      106.0

       

       

       

       

       

       

       

       

       

      Deferred tax provision (benefit):

       

       

       

       

       

       

       

      Federal

       

      (2.2

      )

      60.6

       

      (59.7

      )

      State

       

      —  

       

       

       

      Non-U.S.

       

      54.8

       

      (32.4

      )

      .7

       

      Total deferred tax provision (benefit)

       

      52.6

       

      28.2

       

      (59.0

      )

      Total income tax provision

       

      $

      98.9

       

      $

      36.5

       

      $

      47.0

       

       

      Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts for tax purposes. Deferred income tax assets and liabilities are shown net in circumstances where a consolidated income



      tax return is filed. An outline of the significant components of White Mountains'Mountains’ deferred tax assets and liabilities follows:



       December 31,

       

      December 31,

       

      Millions

      Millions

       

      2006

       

      2005

       

      2004
       2003
      Deferred income tax assets related to:Deferred income tax assets related to:    

       

       

       

       

       

      Discounting of loss reserves

       

      $

      155.7

       

      $

      197.9

       

      Incentive compensation

       

      90.9

       

      78.3

       

      Net unearned insurance and reinsurance premiums

       

      83.8

       

      90.2

       

      U.S. net operating loss and tax credit carryforwards

       

      67.2

       

      105.2

       

      Non-U.S. net operating losses and tax credit carryforwards

       

      53.5

       

      49.7

       

      Olympus reimbursement

       

      48.0

       

       

      Deferred Compensation

       

      31.0

       

      41.3

       

      Deferred gain on reinsurance contract

       

      20.9

       

      22.0

       

      Accrued interest

       

      18.9

       

      9.6

       

      Pension Compensation Plans

       

      11.0

       

      19.6

       

      Fixed assets

       

      9.6

       

      7.1

       

      Involuntary pool and guaranty fund accruals

       

      4.5

       

      5.2

       

      Allowance for doubtful accounts

       

      2.8

       

      3.8

       

      Foreign currency translation on investments and other assets

       

       

      1.8

       

      Other items

       

      22.5

       

      19.2

       

      Total deferred income tax assets

       

      $

      620.3

       

      $

      650.9

       

      Net operating loss and tax credit carryforwards $102.0 $84.2

       

       

       

       

       

      Discounting of loss reserves 152.3 149.5
      Compensation and benefit accruals 219.8 180.0
      Unearned insurance and reinsurance premiums 99.5 79.7
      Involuntary pool and guaranty fund accruals 5.3 12.2
      Fixed assets 2.2 3.6
      Allowance for doubtful accounts 7.0 12.2
      Deferred gain on reinsurance contract 20.7 21.5
      Other items 15.0 49.4
       
       
      Total deferred income tax assets $623.8 $592.3
      Deferred income tax liabilities related to:Deferred income tax liabilities related to:    

       

       

       

       

       

      Net unrealized investment gains 176.5 134.6
      Foreign currency translation on investments and other assets 14.4 3.8
      Equity in unconsolidated insurance affiliates 27.3 36.4
      Deferred acquisition costs 100.9 80.6
      Receivable from trust  24.1
      Safety reserve 310.6 
      Other items 35.6 52.8
       
       

      Safety reserve

       

      $

      350.8

       

      $

      260.2

       

      Net unrealized investment gains

       

      103.2

       

      98.2

       

      Deferred acquisition costs

       

      89.6

       

      95.8

       

      Purchase accounting

       

      14.8

       

      17.4

       

      Foreign currency translation on investments and other assets

       

      4.9

       

       

      Equity in unconsolidated insurance affiliates

       

       

      17.9

       

      Other items

       

      24.8

       

      14.0

       

      Total deferred income tax liabilitiesTotal deferred income tax liabilities 665.3 332.3

       

      $

      588.1

       

      $

      503.5

       

      Net deferred tax asset (liability) before valuation allowance (41.5) 260.0
      Valuation allowance (3.3) 
       
       

      Net deferred tax asset before valuation allowance

       

      $

      32.2

       

      $

      147.4

       

      Valuation allowance

       

      (67.7

      )

      (80.5

      )

      Net deferred tax asset (liability)Net deferred tax asset (liability) $(44.8)$260.0

       

      $

      (35.5

      )

      $

      66.9

       

       
       


      At December 31, 2006 and 2005, the total net deferred tax asset related to U.S. operations is $276.0 million and $299.3 million respectively. At December 31, 2006 and 2005, the total net deferred tax liability for non-U.S. operations (primarily Sweden) is $311.5 million and 232.4 million respectively.

      At December 31, 2006 and 2005, a valuation allowance of $54.8 million and $75.1 million, respectively, was recorded for certain assets applicable to Scandinavian Re (those relating to loss reserve discounting and net operating loss carryforwards). The Company believes that it is more likely than not that these assets will not be realized and has therefore established a full valuation allowance against them. The change in the valuation allowance from 2005 to 2006 primarily relates to current year NOL utilization of $(7.3) million and the effect of net operating loss carryforwards that expired in 2006 of $(12.0) million.

      At December 31, 2006 and 2005, a valuation allowance of $12.9 million and $5.4 million, respectively, was established for net deferred tax assets of consolidated insurance reciprocals, which file separate consolidated tax returns. The Company believes that it is more likely than not that results of future operations will generate sufficient taxable income to realize the deferred tax asset balances (net of valuation allowance) carried as ofat December 31, 20042006 and 2003. During 2003, the valuation allowance was reduced by $30.0 million due to the expiration of certain foreign tax credits that were previously recorded as deferred tax assets. During 2004, a valuation allowance of $3.3 million was established for net operating loss carryforwards of a consolidated insurance reciprocal.2005.



      A reconciliation of taxes calculated using the 35% U.S. statutory rate (the tax rate at which the majority of the Company'sCompany’s worldwide operations are taxed) to the income tax provision on pretaxpre-tax earnings follows:



       Year Ended December 31,
       

       

      Year Ended December 31,

       

      Millions

       
      2004
       2003
       2002
       

       

      2006

       

      2005

       

      2004

       

      Tax provision at the U.S. statutory rateTax provision at the U.S. statutory rate $86.7 $130.3 $41.8 

       

      $

      255.4

       

      $

      102.6

       

      $

      86.7

       

      Differences in taxes resulting from:Differences in taxes resulting from:       

       

       

       

       

       

       

       

      Interest expense—dividends and accretion on preferred stock 16.7 7.8  
      Tax reserve adjustments (7.6) 4.3 15.4 
      Restructuring 16.6   
      Non-U.S. earnings, net of foreign taxes (18.5) (11.4) (27.2)
      Foreign tax credit (38.8)   
      Tax exempt interest and dividends (4.1) (4.1) (4.5)
      Deferred credit amortization and purchase price adjustments (5.0)  (7.0)
      Change in valuation allowance 3.3  (10.0)
      Non deductible interest expense 1.4  4.3 
      Other, net (3.7) .7 (1.1)
       
       
       
       
      Total income tax provision on pretax earnings $47.0 $127.6 $11.7 
       
       
       
       

      Interest expense - dividends and accretion on preferred stock

       

      20.5

       

      18.3

       

      16.7

       

      Tax reserve adjustments

       

      (15.6

      )

      3.5

       

      (7.6

      )

      Tax exempt interest and dividends

       

      (20.3

      )

      (3.2

      )

      (4.1

      )

      Purchase price adjustments

       

       

      (8.0

      )

      (5.0

      )

      Change in valuation allowance

       

      0.2

       

      (9.2

      )

      3.3

       

      Non-U.S. earnings, net of foreign taxes

       

      (140.8

      )

      (68.5

      )

      (18.5

      )

      Restructuring

       

       

       

      16.6

       

      Foreign tax credit

       

       

       

      (38.8

      )

      Non deductible interest expense

       

       

       

      1.4

       

      Other, net

       

      (0.5

      )

      1.0

       

      (3.7

      )

      Total income tax provision on pre-tax earnings

       

      $

      98.9

       

      $

      36.5

       

      $

      47.0

       

       

      The non-U.S. component of pretaxpre-tax earnings was $100.0$629.7 million, $70.5$247.6 million and $97.8$100.0 million for the years ended December 31, 2004, 20032006, 2005 and 2002,2004, respectively.

      At December 31, 2004,2006, there were U.S. net operating loss carryforwards of approximately $46.3$122.7 million available the majority of which will begin to expire in 2011. TheseIncluded in these tax losses are losses of $54.3 million subject to an annual limitation on utilization under Internal Revenue Code Section 382. In addition, at December 31, 2004, thereAlso included in these losses are net operating losses of $22.7 million related to the insurance reciprocals which file separate consolidated tax returns. There were Swedish$50.2 million of net operating loss carryforwards of approximately $25.1available to reduce Swedish taxable income relating to Scandinavian Re. These net operating loss carryforwards expire as follows: $12.3 million available which do not expire.in 2007, $14.9 million in 2008 and $23.0 million in 2009.

      At December 31, 2004, there were credits for increasing research activities of $2.3 million which will begin to expire in 2020.

              At December 31, 2004,2006, there were alternative minimum tax credit carryforwards available of approximately $30.8$6.1 million. The alternative minimum tax credit does not expire.

      Subsequent to the passage of the Jobs Creation Act of 2004, which extended the carryforward period for utilization of a foreign tax credit, the Company filed amended United States tax returns to claim a credit rather than a deduction for foreign taxes paid. At December 31, 2004, $45.72006, $18.2 million of the credit remained which will expire in 2010. During 2004, as a result of the Company's reorganization to align its legal organization with its main operating businesses, certain subsidiaries were removed from the existing consolidated Federal income tax group, resulting in $16.6 million of income tax.


      The U.S. federal income tax returns of the Company’s U.S. Companiessubsidiaries are routinely audited by taxing authorities. For federal income tax purposes, years 2003 through 2005 are currently under examination. All years prior to 2003 have been settled. During 2006, White Mountains recognized $26.3 million in tax benefits related to the settlement of U.S. Federal income tax audits for years prior to 2003. In management'smanagement’s opinion, adequate tax liabilities have been established for all open tax years. These liabilities could be revised in the future if estimates of White Mountains'Mountains’ ultimate liability changes.


      NOTE 8. Retirement and Postretirement Plans

              Certain subsidiaries of the Company offer various retirementOneBeacon sponsors a qualified, non-contributory defined benefit pension plan and postretirement benefits to its employees. Under the terms of these plans, White Mountains reserves the right to change, modify or discontinue the plans.



              Certain subsidiaries of the Company sponsor qualified anda non-qualified, non-contributory defined benefit planspension plan covering substantially all employees. Currentof OneBeacon’s employees who were employed as of December 31, 2001 and who remain actively employed. OneBeacon’s pension plans include a OneBeacon qualified pensionwere curtailed in the fourth quarter of 2002 so that they no longer added new participants or increased benefits for existing participants. Non-vested plan a OneBeacon non-qualified pension plan, and an NFU qualified pension plan.participants continue to vest during their employment with OneBeacon. The benefits for the plans are based primarily on years of service and employees'employees’ pay near retirement.through December 31, 2002. Participants generally vest after five years of continuous service. White Mountains'OneBeacon’s funding policy is consistent with the funding requirements of federal laws and regulations. OneBeacon uses a December 31st measurement date for its defined benefit pension plans.

      In addition to the defined benefit pension plans, certain of the Company's subsidiaries have multipleOneBeacon had a contributory postretirement benefit plansplan which provideprovided medical and life insurance benefits to pensioners and survivors. White Mountains' funding policy is to make contributions to the plan that are necessary to cover its current obligations.

              The majority of OneBeacon's pension and retiree medical plans were curtailed inIn the fourth quarter of 2002. The2005, OneBeacon Insurance Pension Plan will no longer add new participants or increasesettled its retiree medical obligation through the funding of an independent trust to provide benefits for existing participants. Non-vestedcovered participants already in the plan will continue to vest during their employment withamount of $31.2 million. Upon completing the funding of the independent trust, OneBeacon which this effectively causesterminated the projectedpostretirement benefit plan. OneBeacon’s settlement of its postretirement benefit obligation to equal the accumulated benefit obligation. Retirees are also eligible for medical benefits if they meet certain age and service requirements. However, due to the curtailment,termination of the plan no longer accepts new retirees afterresulted in recognition of a grace period ended May 31, 2003. The majority of retiree medical costs are capped at defined dollar amounts, with retirees contributing the remainder. OneBeacon uses a December 31st measurement date for its plans.$53.6 million gain.

              The Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (the "Medicare Act") made significant changes to the federal Medicare Program by increasing coverage for prescription drugs. As a result, OneBeacon's retiree medical benefit obligations have been reduced. In the third quarter of 2004, OneBeacon adopted FASB Staff Position No. 106-2 entitled "Accounting and Disclosure Requirements Related to the Medicare Prescription Drug, Improvement and Modernization Act of 2003", which reduced OneBeacon's accumulated benefit obligation by less than $1 million. Accordingly, the impact of the Medicare Act is immaterial to White Mountains' consolidated financial position.



      The following tables set forth the obligations and funded status, assumptions, plan assets and cash flows associated with the various pension plan and postretirement benefits as ofat December 31, 20042006 and 2003:2005:


      Obligations and Funded Status

       

       

      Pension Benefits

       

      Other Postretirement
      Benefits

       

      Millions

       

      2006

       

      2005

       

      2006

       

      2005

       

      Change in projected benefit obligation:

       

       

       

       

       

       

       

       

       

      Projected benefit obligation at beginning of year

       

      $

      507.3

       

      $

      525.5

       

      $

       

      $

      50.9

       

      Service cost

       

      2.6

       

      1.5

       

       

      .1

       

      Interest cost

       

      27.7

       

      29.7

       

       

      2.8

       

      Curtailment

       

       

      (4.9

      )

       

      (31.2

      )

      Plan amendments

       

      1.6

       

      2.8

       

       

       

      Assumption changes

       

      36.9

       

      24.4

       

       

       

      Actuarial (gain) loss

       

      3.3

       

      7.6

       

       

      (14.0

      )

      Benefits and expenses paid, net of participant contributions

       

      (42.2

      )

      (50.6

      )

       

      (8.1

      )

      Benefits paid directly by OneBeacon

       

      (3.1

      )

      (3.0

      )

       

       

       

       

      Effect of disposition (1)

       

       

      (25.7

      )

       

      (.5

      )

      Projected benefit obligation at end of year

       

      $

      534.1

       

      $

      507.3

       

      $

       

      $

       

      Change in plan assets:

       

       

       

       

       

       

       

       

       

      Fair value of plan assets at beginning of year

       

      $

      488.0

       

      $

      492.5

       

      $

       

      $

       

      Actual return on plan assets

       

      83.4

       

      68.9

       

       

       

      Employer contributions

       

       

      3.0

       

       

      39.3

       

      Benefits and expenses paid, net of participant contributions

       

      (40.6

      )

      (50.8

      )

       

      (39.3

      )

      Effect of disposition (1)

       

       

      (22.8

      )

       

       

      Special termination benefits

       

      (1.6

      )

      (2.8

      )

       

       

       

       

      Other adjustments

       

      3.5

       

       

       

       

      Fair value of plan assets at end of year

       

      $

      532.7

       

      $

      488.0

       

      $

       

      $

       

      Funded status

       

      $

      (1.4

      )

      $

      (19.3

      )

      $

       

      $

       


      (1)          The effect of disposition includes the sale of NFU to a third party on September 30, 2005.


       
       Pension
      Benefits

       Other Postretirement
      Benefits

       
      Millions

       
       2004
       2003
       2004
       2003
       
      Change in projected benefit obligation:             
      Projected benefit obligation at beginning of year $501.5 $494.6 $69.7 $70.0 
      Service cost  1.9  1.9  .1  .2 
      Interest cost  30.7  30.5  3.2  4.6 
      Curtailment          
      Plan amendments         (13.4)
      Assumption changes      (.6) 3.5 
      Actuarial (gain) loss  40.8  44.5  (12.8) 13.8 
      Liability net loss         
      Benefits and expenses paid, net of participant contributions  (49.4) (70.0) (8.7) (9.0)
        
       
       
       
       
      Projected benefit obligation at end of year $525.5 $501.5 $50.9 $69.7 
        
       
       
       
       
      Change in plan assets:             
      Fair value of plan assets at beginning of year $478.8 $471.1 $ $ 
      Actual return on plan assets  61.8  82.0     
      Employer contributions  4.2  5.4  8.7  9.0 
      Special termination benefits  (2.9) (9.7)      
      Benefits and expenses paid, net of participant contributions  (49.4) (70.0) (8.7) (9.0)
        
       
       
       
       
      Fair value of plan assets at end of year $492.5 $478.8 $ $ 
        
       
       
       
       
      Funded status $(33.0)$(22.7)$(50.9)$(69.7)
      Unrecognized net loss(gain)  17.6  6.4  3.3  16.7 
      Unrecognized prior service benefit      (46.8) (50.9)
        
       
       
       
       
      Net amount accrued as a liability $(15.4)$(16.3)$(94.4)$(103.9)
        
       
       
       
       

      At December 31, 2006, the qualified pension plan was overfunded by $27.4 million and the non-qualified plan was underfunded by $28.8 million. The non-qualified plan does not hold any assets. OneBeacon has established $20.1 million in irrevocable rabbi trusts for the benefit of non-qualified pension plan participants that are recorded in other assets at December 31, 2006. The assets held in the rabbi trusts are not reflected in the funded status of the consolidated pension plans is ($33.0) million, of which ($3.8) million relates to the qualified pension plans and ($29.2) million is related to the non-qualified plan which is unfunded.as presented.

      Amounts recognized in the financial statements consist of:

       
        
        
       Other Postretirement Benefits
       
       
       Pension Benefits
       
      Millions

       
       2004
       2003
       2004
       2003
       
      Prepaid benefit cost $15.0 $15.4 $ $ 
      Accrued benefit cost  (34.1) (31.7) (94.4) (103.9)
      Intangible assets         
      Accumulated other comprehensive income (pre-tax)  3.7       
        
       
       
       
       
      Net amount accrued as a liability $(15.4)$(16.3)$(94.4)$(103.9)
        
       
       
       
       

       

       

      Pension Benefits

       

      Other
      Postretirement Benefits

       

      Millions

       

      2006

       

      2005

       

      2006

       

      2005

       

      Prepaid benefit cost

       

      $

      27.4

       

      $

      14.9

       

      $

       

      $

       

      Accrued benefit cost

       

      (28.8

      )

      (29.6

      )

       

       

      Accumulated other comprehensive income (pre-tax)

       

       

      5.2

       

       

       

      Net amount accrued as a liability

       

      $

      (1.4

      )

      $

      (9.5

      )

      $

       

      $

       

      Because OneBeacon’s defined benefit pension plans have been curtailed, the accumulated benefit obligation is equal to the projected benefit obligation for both the qualified and non-qualified defined benefit pension plans. The accumulated benefit obligation and projected benefit obligation for allthe qualified defined benefit pension plans was $521.2 million and $497.4 millionplan at December 31, 20042006 and 2003, respectively.

              Information2005 was $505.3 million and $477.6 million. The accumulated benefit obligation and projected benefit obligation for the OneBeacon non-qualified pensiondefined benefit plan at December 31, 2006 and 2005 was $28.8 million and $29.6 million. The fair value of the NFU qualified pension plan which had accumulated benefit obligations in excess of plan assets were as follows:for the qualified defined benefit plan at December 31, 2006 and 2005 was $532.7 million and $488.0 million. The non-qualified defined benefit plan did not hold any assets at December 31, 2006 and 2005.

       
       December 31,
      Millions

       2004
       2003
      Projected benefit obligation $57.6 $52.5
      Accumulated benefit obligation  53.3  48.4
      Fair value of plan assets  21.1  18.9
        
       

      At December 31, 2006 White Mountains adopted FAS 158 and accordingly recognized the funded status of OneBeacon’s defined benefit plans upon adoption. The following summarizes the incremental effect of adoption on individual line items in the statement of financial position:

      Millions

       

      Before
      Adoption of
      FAS 158

       

      Adjustments

       

      After Adoption
      of FAS 158

       

      Prepaid benefit cost recorded in other assets

       

      $

      18.6

       

      $

      8.8

       

      $

      27.4

       

      Accrued benefit cost recorded in other liabilities

       

      28.8

       

       

      28.8

       

      Deferred federal income taxes

       

      314.6

       

      (3.1

      )

      311.5

       

      Net effect of adoption before adjustment for minority interest

       

      n/a

       

      5.7

       

      n/a

       

      Minority interest

       

      604.8

       

      (1.6

      )

      603.2

       

      Accumulated other comprehensive income

       

      227.7

       

      4.1

       

      231.8

       

      Total shareholders’ equity

       

      $

      4,451.2

       

      $

      4.1

       

      $

      4,455.3

       

       


      The components of net periodic benefit costs for the years ended December 31, 2004, 20032006, 2005 and 20022004 were as follows:


       Pension Benefits
       Other Postretirement Benefits
       

       

      Pension Benefits

       

      Other Postretirement Benefits

       

      Millions

       
      2004
       2003
       2002
       2004
       2003
       2002
       

       

      2006

       

      2005

       

      2004

       

      2006

       

      2005

       

      2004

       

      Service cost $1.9 $1.9 $14.6 $.1 $.2 $1.8 

       

      $

      2.6

       

      $

      1.5

       

      $

      1.9

       

      $

       

      $

      .1

       

      $

      .1

       

      Interest cost  30.7  30.5  36.3  3.2  4.6  8.3 

       

      27.7

       

      29.7

       

      30.7

       

       

      2.8

       

      3.2

       

      Expected return on plan assets  (32.2) (30.5) (38.4)      

       

      (30.6

      )

      (31.7

      )

      (32.2

      )

       

       

       

      Amortization of prior service cost (benefit)      1.5  (4.1) (3.6) (.5)

      Amortization of prior service benefit

       

       

       

       

       

      (4.2

      )

      (4.1

      )

      Amortization of unrecognized loss        .1  .5   

       

      .3

       

       

       

       

       

      .1

       

      Recognized actuarial loss      .1      .1 

       

       

       

       

       

       

       

       
       
       
       
       
       
       
      Net periodic pension cost before settlements, curtailments and special termination benefits  .4  1.9  14.1  (.7) 1.7  9.7 

       

       

      (.5

      )

      .4

       

       

      (1.3

      )

      (.7

      )

      Settlement expense(gain)    (1.6) 3.5       
      Curtailment (gain)      (20.7)     (14.4)
      Special termination benefits expense(1)  2.9  9.7  3.4       
       
       
       
       
       
       
       
      Total settlements, curtailments and special termination benefits  2.9  8.1  (13.8)     (14.4)
       
       
       
       
       
       
       

      Settlement gain

       

       

       

       

       

       

       

      Curtailment gain (1)

       

       

      (1.6

      )

       

       

       

       

      Special termination benefits expense (2)

       

      1.6

       

      2.8

       

      2.9

       

       

       

       

      Effect of disposition

       

       

      (3.6

      )

       

       

      (.6

      )

       

      Total settlements, curtailments, special termination benefits, and effect of disposition

       

       

      (2.4

      )

      2.9

       

       

      (.6

      )

       

      Total net periodic benefit cost (income) $3.3 $10.0 $.3 $(.7)$1.7 $(4.7)

       

      $

      1.6

       

      $

      (2.9

      )

      $

      3.3

       

      $

       

      $

      (1.9

      )

      $

      (.7

      )

       
       
       
       
       
       
       

      (1)
      Special termination benefits are additional payments made from the pension plan when a vested participant terminates employment due to a reduction in force.

      (1)

      During June 2005, NFU froze its pension plan and recognized a $1.6 million curtailment gain. NFU was sold to a third party on September 30, 2005.

      (2)

      Special termination benefits are additional payments made from the pension plan when a vested participant terminates employment due to a reduction in force.


      Assumptions
      Assumptions

      The weighted average assumptionsdiscount rate used to determine benefit obligations at December 31, 20042006 and 2003 were:2005 was:

       
       Pension Benefits
       Other Postretirement Benefits
       
       
       2004
       2003
       2004
       2003
       
      Discount rate 5.875%6.000%5.875%6.000%
      Rate of compensation increase(1) 0.190%0.180%0.034%0.026%

      (1)
      The rate of compensation increase affects only the NFU qualified pension plan as both the OneBeacon qualified and non-qualified pensions plans are frozen.

       

       

      Pension Benefits

       

      Other Postretirement
      Benefits

       

       

       

      2006

       

      2005

       

      2006

       

      2005

       

      Discount rate

       

      5.027

      %

      5.500

      %

       

       

       

      The weighted average assumptions used to determine net periodic benefit cost for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 were:


       Pension Benefits
       Other Postretirement Benefits
       

       

      Pension Benefits

       

      Other Postretirement
      Benefits

       


       2004
       2003
       2002
       2004(1)
       2003(2)
       2002
       

       

      2006

       

      2005

       

      2004

       

      2006

       

      2005 (1)

       

      2004 (2)

       

      Discount rate 6.000%6.500%6.500%6.125%6.250%6.500%

       

      5.500

      %

      5.875

      %

      6.000

      %

       

       

      6.125

      %

      Expected long-term rate of return on plan assets 7.000%7.000%7.500%   

       

      6.500

      %

      6.750

      %

      7.000

      %

       

       

       

      Rate of compensation increase(3) 0.190%0.206%0.300%0.034%0.026%0.026%
       
       
       
       
       
       
       

      Rate of compensation increase (3)

       

       

       

      .190

      %

       

       

      .034

      %


      (1)

      (1)

      The discount rate in effect from January 1 through June 30, 2005 was 6.25%. The retiree medical plan was re-measured on June 30 due to plan changes that became effective on July 1. The plan formally terminated December 31, 2005.

      (2)

      The discount rate in effect from January 1 through June 30, 2004 was 6.0%. The retiree medical plan was re-measured on June 30 due to plan changes that became effective on July 1. The discount rate was raised to 6.25% for the re-measurement and remained in effect through December 31, 2004.

      (3)

      The rate of compensation increase affects only the NFU qualified pension plan for 2004. OneBeacon sold NFU to a third party on September 30, 2005. Both the OneBeacon qualified and non-qualified pensions plans are frozen.


      OneBeacon’s discount rate in effect from January 1 through June 30, 2004 was 6.0%. The postretirement health plan was re-measured on June 30 dueassumptions used to plan changes that became effective on July 1. The discount rate was raised to 6.25%account for the re-measurement and remained in effect through December 31, 2004.

      (2)
      The discount rate in effect from January 1 through June 30, 2003 was 6.5%. The postretirement health plan was re-measured on June 30 due to plan changes that became effective on July 1. The discount rate was lowered to 6.0% for the re-measurement and remained in effect through December 31, 2003.

      (3)
      The rate of compensation increase affects only the NFU qualified pension plan as both the OneBeaconits qualified and non-qualified pensionspension plans are frozen.
      reflect the rates at which the benefit obligations could be effectively settled. These rates were determined based on consideration of published yields for high quality long-term corporate bonds and U.S. Treasuries, as well as settlement rates from insurance company annuity contracts.

      OneBeacon performed an analysis of expected long-term rates of return based on the allocation of its pension plan assets as ofat both December 31, 20042006 and December 31, 20032005 to develop expected rates of return for each significant asset class or economic indicator. A range of returns was developed based both on forecasts and on broad-market historical benchmarks for expected return, correlation, and volatility for each asset class. Although the expected investment return assumption is long-term in nature, the range of reasonable returns had dropped over the past few years as a consequence of lower inflation and lower bond yields.

              The assumed health care cost trend rates at December 31, 2004 and 2003 were:

       
       2004
       2003
       
      Health care cost trend rate assumed for next year 10.0%9.5%
      Rate to which the cost trend rate is assumed to decline 5.0%5.0%
      Year that the rate reaches the ultimate trend rate 2014 2013 

              Assumed health care cost trend rates typically have a significant effect on the amounts reported for the health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following pre-tax effects:

      Millions

       One-
      Percentage
      Point
      Increase

       One-
      Percentage
      Point
      Decrease

       
      Effect on total service and interest cost $ $ 
      Effect on postretirement benefit obligation  .3  (.2)
        
       
       


      Plan Assets

              OneBeacon'sOneBeacon’s pension plans weighted-average asset allocations at December 31, 20042006 and 2003,2005, by asset category were as follows:


       Plan Assets at December 31,
       

       

      Plan Assets
      at December 31,

       

      Asset Category

       
      2004
       2003
       

       

      2006

       

      2005

       

      Equity securities 45%44%

       

      42

      %

      38

      %

      Debt securities 36%37%

       

      32

      %

      31

      %

      Convertible securities 13%11%

       

      20

      %

      22

      %

      Cash and cash equivalents 6%8%

       

      6

      %

      9

      %

       
       
       
      Total 100%100%

       

      100

      %

      100

      %

       
       
       

       

      The majority of the plans'plans’ assets are invested by White MountainsWM Advisors, LLC, a subsidiary of White Mountains Insurance Group, Ltd.Mountains. The investment policy places an emphasis on preserving invested assets through a diversified portfolio of high-quality income producing investments and equity investments.

      The investment management process integrates the risks and returns available in the investment arena with the risks and returns available to the plan in establishing the proper allocation of invested assets. The asset classes include fixed income, equity, convertible securities, and cash and cash equivalents. The factors examined in establishing the appropriate investment mix include: the outlook for risk and return in the various investment markets and sectors, and the long term need for capital growth.


      Cash Flows

      OneBeacon expectsdoes not expect to contribute $4.2 millionmake a contribution to its pension plans and $6.9in 2007. OneBeacon expects to pay $2.8 million of benefit payments in 2007 related to its other postretirement benefits plans in 2005. The majority of OneBeacon's expected pension contributions in 2005 relate tothe non-qualified pension plans,plan, for which OneBeacon has established assets held in rabbi trusts.

      The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:


       Pension Benefits
       Other Benefits
      Millions

       Expected Benefit
      Payments

       Expected Benefits
      Payments

       Expected Medicare
      Part D
      Subsidies

       

      Expected Benefit
      Payments

       

      2005 $39.1 $6.9 $
      2006 38.6 6.5 .1
      2007 38.4 6.1 .1

       

      $

      37.7

       

      2008 38.1 5.6 .1

       

      37.1

       

      2009 38.4 5.2 .1

       

      36.3

       

      2010-2014 184.4 20.7 .4

      2010

       

      35.9

       

      2011

       

      35.5

       

      2012-2016

       

      173.9

       


      Other Benefit Plans

      Certain of the Company'sCompany’s subsidiaries sponsor various employee savings plans (defined contribution plans) covering the majority of employees. The contributory plans provide qualifying employees with matching contributions of up to six percent of qualifying employees'employees’ salary (subject to federal limits on allowable contributions in a given year). Total expense for the plans was $4.9 million, $4.7 million and $5.8 million $5.5 millionin 2006, 2005 and $7.4 million in 2004, 2003 and 2002, respectively.


      2004.

      OneBeacon had a post-employment benefit liability of $13.2$9.6 million and $14.4$12.2 million related to its long-term disability plan at December 31, 20042006 and 2003, respectively.2005.


              Effective January 1, 2003, OneBeacon replaced its defined benefit pension plan with an employee stock ownership plan ("ESOP"). See Note 9.


      NOTE 9. Employee Share-Based Incentive Compensation Plans

      White Mountains'Mountains’ share-based incentive compensation expenses, consisting primarily of performance share expense,plans are designed to maximizewith one goal in mind, maximization of shareholder value over long periods of timetime. White Mountains believes that this goal is best pursued by aligningutilising a pay-for-performance program for its key employees that closely aligns the financial interests of its management with those of its owners. The Board believesshareholders. White Mountains accomplishes this by emphasizing highly variable long-term compensation that share-based compensationis contingent on performance over a number of years rather than entitlements (such as base salary, pensions and employee benefits). To that end, the Company’s Compensation Committee has established base salaries and target annual bonuses for its key employees shouldthat tend to be payable in full only iflower than those paid by other property and casualty (re)insurers, while granting the Company achieves superior returns for its owners. bulk of target compensation as long-term, share-based incentive compensation.

      White Mountains expenses all its share-based compensation, including its outstanding Options.compensation. As a result, the Company'sWhite Mountains’ calculation of such returnits owners’ returns includes the full expense of all outstanding share-based compensation awards. See Note 1 for a summary of White Mountains’ accounting policies regarding its share-based compensation plans.


      Incentive Compensation Plans

      White Mountains'Mountains’ Long-Term Incentive Plan (the "Incentive Plan"“Incentive Plan”)

              The Incentive Plan provides for granting various types of share-based and non share-based incentive awards to certain officerskey employees of the Company and certain of its subsidiaries, various types of share-based incentive awards including performance shares, Restricted Shares and Options.subsidiaries. The Incentive Plan was adopted by the Board, and was approved by the Company'sCompany’s sole shareholder in 1985 and was subsequently amended by its shareholders in 1995, 2001, 2003 and 2001.

      Performance2005. Share-based incentive awards that may be granted under the plan include performance shares, Restricted Shares,

      Incentive Options and non-qualified stock options (“Non-Qualified Options”). Performance shares are conditional grants of a specified maximum number of Common Sharescommon shares or an equivalent amount of cash. In general, grants are earned, subject to the attainment of pre-specified performance goals, at the end of a three-year period or as otherwise determined by the Compensation Committee of the Board and are valued based on the market value of Common Sharescommon shares at the time awards are paid. Results that significantly exceed pre-specified targets can result in a

      The OneBeacon Long-Term Incentive Plan (the “OneBeacon Incentive Plan”) provides for granting to key employees of OneBeacon Ltd., and certain of its subsidiaries, various types of share-based incentive awards, including performance share payoutshares, Restricted Shares, Incentive Options and Non-Qualified Options.

      Certain of up to 200%White Mountains’ subsidiary incentive plans, consisting of value whereas results significantly below target result in no payout. The Company's principal performance share goal is its after-tax corporate return on equity as measured by growth in its intrinsic value per share ("ROE"). The Company calculates intrinsic value per share based on its growth in economic value per share (weighted 50%), growth in tangible GAAP book value per share (weighted 25%) and growth in market value per share (weighted 25%).This proprietary measure is viewed by managementthe OneBeacon Phantom White Mountains Share Plan, the White Mountains Re Performance Plan, the Folksamerica Performance Plan and the Board as being an objectiveEsurance Performance Plan, provide for granting phantom White Mountains performance shares (the “Phantom Share Plans”) to certain key employees of OneBeacon, White Mountains Re, Folksamerica and conservative measureEsurance. The performance goals for full payment of performance shares issued under these plans are identical to those of the value of White Mountains and includes the projected cost of all outstanding compensation awards. At December 31, 2004, 69,250, 75,200 and 53,500 performanceIncentive Plan. Performance shares had been granted at targetearned under the Incentive Plan for the three-year performance periods beginning 2004, 2003 and 2002, respectively.

              During 2004, White Mountains made payments with respect to 63,480 performance shares (relating to the 2001-2003 performance period) at an average 137% payout level, amounting to $40.7 million, to its participantsPhantom Share Plans are payable solely in cash or by deferral into certain non-qualified compensation plans of White Mountains.

      In addition, the Company or its subsidiaries. During the first quarteroffers certain types of 2003, White Mountains made payments with respect to 39,500 performance shares (relating to the 2000-2002 performance period) at a 200% payout level, amounting to $25.7 million, to its participants in cash or by deferral into certain non-qualifiedshare-based compensation plans of the Company or its subsidiaries. In the second quarter of 2003, White Mountains made payments with respect to 21,725 performance shares, amounting to $13.1 million, in cash or by deferral into certain non-qualified compensation plans of the Company. The performance share payments in the second quarter were the result of an agreed upon cancellation of performance shares held by certain non-employee directors of the Company for performance periods scheduled to end on December 31, 2003, 2004 and 2005. During 2002, White Mountains paid a total of 31,300 performance shares (relating to the 1999-2001 performance period) at a 200% value, amounting to



      $20.7 million, to its participants in cash, Common Shares or by deferral into certain non-qualified compensation plans of the Company or its subsidiaries.

              The targeted performance goal for full payment of performance shares granted during 2004 to non-investment personnel is the attainment of an ROE of 13%. At an ROE of 6% or less, no such performance shares would be earned and at an ROE of 20% or more, 200% of such performance shares would be earned. With respect to the 2004 performance shares granted investment personnel, the performance goals for full payment are based in part on the ROE criteria described above and in part on the attainment of an annual return on invested assets of the greater of 1.5% or 150 basis points over the applicable total return on the constant maturity ten-year United States treasury note (the "2004 Treasury Return"). At an annual return on invested assets less than or equal to the greater of 0% or the 2004 Treasury Return, no such performance shares would be earned and at an annual return on invested assets of the greater of 3.25% or 325 basis points over the 2004 Treasury Return, 200% of such performance shares would be earned. With respect to the 2004 performance shares granted to investment personnel, the Compensation Committee of the Board generally retains the authority to weigh each performance goal as they deem appropriate at the end of the cycle.

              The targeted performance goal for full payment of performance shares granted during 2003 to non-investment personnel is the attainment of an ROE of 11%. At an ROE of 4% or less, no such performance shares would be earned and at an ROE of 21% or more, 200% of such performance shares would be earned. With respect to the 2003 performance shares granted to investment personnel, the performance goals for full payment are based in part on the ROE criteria described above and in part on the attainment of an annual return on invested assets of 150 basis points over the applicable total return on the constant maturity ten-year United States treasury note (the "2003 Treasury Return"). At an annual return on invested assets equal to the 2003 Treasury Return, no such performance shares would be earned and at an annual return on invested assets of 325 basis points over the 2003 Treasury Return, 200% of such performance shares would be earned. With respect to the 2003 performance shares granted to investment personnel, the Compensation Committee of the Board generally retains the authority to weigh each performance goal as they deem appropriate at the end of the cycle.

              The targeted performance goal for full payment of performance shares granted during 2002 to certain holding company personnel is based on the attainment of an ROE of 12%. At an ROE of 5% or less, no such performance shares would be earned and at an ROE of 23% or more, 200% of such performance shares would be earned. With respect to the 2002 performance shares granted to OneBeacon personnel (including certain officers of the holding company), the targeted performance goal for full payment is based in part on the ROE criteria described above and in part on the attainment of an insurance trade ratio of 102% on OneBeacon's core insurance operations. At a trade ratio of 106% or more, no such performance shares would be earned and at a trade ratio of 96% or less, 200% of such performance shares would be earned. With respect to the 2002 performance shares granted to investment personnel, the performance goals for full payment are based in part on the ROE criteria described above and in part on the attainment of an annual return on invested assets of 150 basis points over the applicable total return on the constant maturity ten-year United States treasury note (the "2002 Treasury Return"). At an annual return on invested assets equal to the 2002 Treasury Return, no such performance shares would be earned and at an annual return on invested assets of 300 basis points over the 2002 Treasury Return, 200% of such performance shares would be earned. With respect to the 2002 performance shares granted to OneBeacon personnel (including certain officers of the holding company) and investment personnel, in general the Compensation Committee of the Board generally retains the authority to weigh each performance goal as they deem appropriate at the end of the cycle.



      Restricted Shares

              In 2001 White Mountains' Compensation Committee issued 94,500 Restricted Shares, of which 21,000 vested in December, 2002 and 73,500 vested in June 2003. During 2002 and 2003, the Company repurchased 20,750 and 34,000, respectively, of these Restricted Shares and in return granted an equivalent value in various non-qualified deferred compensation plans of the Company and its subsidiaries. During 2004 and 2003, certain key officers were awarded 10,000 and 6,000 Restricted Shares, respectively. No Restricted Shares were awarded during 2002. These Restricted Shares vest either ratably or entirely over a three year period from the date of grant and vesting of Restricted Share awards is dependent on continuous service by the employee throughout the award period. There are no other restrictions on the Restricted Shares once they have become fully vested. As of December 31, 2004, the Company had 15,000 Restricted Shares that were unvested.

      Options

              At December 31, 2004 and 2003, the Company had 46,530 Options outstanding (10,530 of which were exercisable) and 50,565 Options outstanding (7,365 of which were exercisable), respectively. These Options were issued in 2000 to certain key employees as a one-time incentive and vest ratably over a ten-year period. The Options had a weighted average exercise price of $140.80 and $132.83 per Common Share at December 31, 2004 and 2003, respectively. During 2004 and 2003, 4,035 and 11,400 Options, respectively, were exercised at an average exercise price of $139.58 and $129.01 per Common Share, respectively.


      OneBeacon Performance Plan

              OneBeacon's Performance Plan (the "OB Performance Plan") provides for granting of performance shares to certain key employees of OneBeacon. The performance goals for full payment of performance shares issued under the OB Performance Plan are similar to those of the Incentive Plan. The OB Performance Plan was approved by the Board but was not subject to shareholder approval.

              At December 31, 2004, there were 3,500, none and 150,896 performance shares outstanding under the OB Performance Plan for the three-year performance periods beginning 2004, 2003 and 2002, respectively. During 2004, OneBeacon made payments with respect to 101,802 performance shares (relating to the 2001-2003 performance period) at an average 182% payout level, amounting to $84.6 million, to its participants in cash. No performance shares were paid during 2003 and 2002.


      Folksamerica Performance Plan

              Folksamerica's Performance Plan provides for granting of performance shares to certain key employees of Folksamerica. The performance goals for full payment of performance shares issued under the Folksamerica Performance Plan are similar to those of the Incentive Plan. The Folksamerica Performance Plan was approved by the Board but was not subject to shareholder approval.

              At December 31, 2004, there were 2,000, 4,900 and 9,400 performance shares outstanding under the Folksamerica Performance Plan for the three-year performance periods beginning 2004, 2003 and 2002, respectively. Folksamerica made payments with respect to 2,500 performance shares (relating to the 2001-2003 performance period) at a 93% payout level, amounting to $1.1 million, to its participants in cash. Folksamerica made payments with respect to 5,500 performance shares (relating to the 2000-2002 performance period) at a 200% payout level, amounting to $2.9 million, to its participants in cash. No performance shares were paid during 2002.


      Other Share-Based Compensation

      qualified retirement plans. The defined contribution plans of OneBeacon, Folksamerica and FolksamericaEsurance (the "401(k) Plans"“401(k) Plans”) offer its participants the ability to invest their balances in several different investment options, including the



      Company's Common Shares. As of December 31, 2004 and 2003, the 401(k) Plans owned less than 1% of the total Common Shares outstanding. In connection with the OneBeacon Acquisition, during 2001 eligible OneBeacon employees received a one-time contribution of two Common Shares which resulted in the issuance of 11,980 Common Shares.

              Effective January 1, 2003, OneBeacon adopted an Company’s common shares. OneBeacon’s employee stock ownership plan ("ESOP"(“ESOP”), which is a OneBeacon-funded benefit plan. The ESOPplan that provides all of its participants with an annual base contribution in Common Sharescommon shares equal to 3% of their salary, up to the applicable Social Security wage base (or $87,900$94,200 with respect to 2004)2006). Additionally, those participants not otherwise eligible to receive certain other OneBeacon benefits under OneBeacon's Management Incentive Plan can earn a variable contribution up to an additional 6% of their salary, up to the applicable Social Security wage base, contingent upon OneBeacon’s performance.


      Performance Shares

      Performance shares reward company-wide performance as their level of payout, which can be from 0x to 2x the number initially granted, is dependent upon the Company’s financial performance. Performance shares become payable at the conclusion of a performance cycle (typically three years) if pre-defined financial targets are met.

      The Company’s principal performance measure used for performance shares is its after-tax corporate growth in intrinsic business value per share. In measuring growth in intrinsic business value per share, for many years the Company’s Compensation Committee has looked to growth in economic value per share (which is weighted 50%), growth in tangible book value per share (which is weighted 25%) and growth in market value per share (which is weighted 25%), in each case including dividends. Economic value is calculated by starting with GAAP book value, then adjusting White Mountains’ assets and liabilities to their underlying economic value (such as through the discounting of reserves).

      White Mountains’ share-based compensation expense consists primarily of performance share expense. The following summarizes performance share activity for the years ended December 31, 2006, 2005 and 2004 for performance shares granted under the Incentive Plan and performance shares and phantom performance shares granted under subsidiary plans (“Phantom Share Plans”):

       

      Year Ended December 31,

       

       

       

      2006

       

      2005

       

      2004

       

       

       

      Target
      Performance

       

       

       

      Target
      Performance

       

       

       

      Target
      Performance

       

       

       

      Millions, except share amounts

       

      Shares
      Outstanding

       

      Accrued
      Expense

       

      Shares
      Outstanding

       

      Accured
      Expense

       

      Shares
      Outstanding

       

      Accrued
      Expense

       

      Beginning of period

       

      183,031

       

      $

      100.5

       

      368,646

       

      $

      340.0

       

      462,187

       

      $

      257.7

       

      Payments and deferrals

       

      (64,100

      )

      (57.0

      )(1)

      (212,611

      )

      (234.5

      )(2)

      (167,445

      )

      (132.6

      )(3)

      Forfeitures and cancellations

       

      (4,753

      )

      (2.7

      )

      (57,621

      )

      (27.1

      )

      (1,346

      )

      (1.1

      )

      New Awards

       

      71,185

       

       

      84,617

       

       

      75,250

       

       

      Expense Recognized

       

       

      61.6

       

       

      22.1

       

       

      216.0

       

      Ending December 31,

       

      185,363

       

      $

      102.4

       

      183,031

       

      $

      100.5

       

      386,646

       

      $

      340.0

       


      (1)          Performance share payments in 2006 for the 2003-2005 performance cycle ranged from 142% to 181% of target.

      (2)          Performance share payments in 2005 for the 2002-2004 performance cycle ranged from 160% to 180% of target.

      (3)          Performance share payments in 2004 for the 2001-2003 performance cycle ranged from 93% to 200% of target.

      If 100% of the outstanding performance shares had been vested on December 31, 2006, the total additional compensation cost to be recognized would have been $59.2 million, based on current accrual factors (common share price and payout assumptions).

      All performance shares earned for the 2003-2005, 2002-2004 and 2001-2003 performance cycles were settled in cash or by deferral into certain non-qualified deferred compensation plans of the Company or its subsidiaries.


      Performance shares granted under the Incentive Plan

      The following summarizes performance shares outstanding and accrued performance share expense for performance shares awarded under the Incentive Plan at December 31, 2006 for each performance cycle:

      Millions, except share amounts

       

      Target
      Performance
      Shares
      Outstanding

       

      Accrued
      Expense

       

      Performance cycle:

       

       

       

       

       

      2004 - 2006

       

      58,100

       

      $

      53.7

       

      2005 - 2007

       

      47,770

       

      21.1

       

      2006 - 2008

       

      62,915

       

      20.1

       

      Sub-total

       

      168,785

       

      $

      94.9

       

      Assumed forfeitures

       

      (4,220

      )

      (2.4

      )

      Total at December 31, 2006

       

      164,565

       

      $

      92.5

       

      The targeted performance goal for full payment of outstanding performance shares granted under the Incentive Plan to non-investment personnel is a 13% growth in intrinsic business value per share. Growth of 6% or less would result in a payout of 0% and growth of 20% or more would result in a payout of 200%.

      For investment personnel, the targeted performance goal for full payment of outstanding performance shares granted under the Incentive Plan is based in part on growth in intrinsic business value per share (as described above) and in part on achieving a total return on invested assets as measured against metrics based on United States treasury note and/or industry benchmark returns.

      Phantom performance shares granted under Phantom Share Plans

      The following summarizes performance shares outstanding and accrued phantom performance share
      expense for awards made under the Phantom Share Plans at December 31, 2006 for each performance cycle:

       

      Target
      Performance

       

       

       

       

       

      Shares

       

      Accrued

       

      Millions, except share amounts

       

      Outstanding

       

      Expense

       

      Performance cycle:

       

       

       

       

       

      2004 - 2006

       

      5,200

       

      $

      4.5

       

      2005 - 2007

       

      7,861

       

      3.1

       

      2006 - 2008

       

      8,270

       

      2.6

       

      Sub-total

       

      21,331

       

      $

      10.2

       

      Assumed forfeitures

       

      (533

      )

      (0.3

      )

      Total at December 31, 2006

       

      20,798

       

      $

      9.9

       

      The targeted performance goal for full payment of outstanding performance shares granted under the Phantom Share Plans is a 13% growth in intrinsic business value per share. Growth of 6% or less would result in a payout of 0% and growth of 20% or more would result in a payout of 200%.


      Restricted Shares

      At December 31, 2006, 2005 and 2004, the Company had 10,000, 13,000 and 15,000 unvested Restricted Shares outstanding under the Incentive Plan, respectively, which were granted to certain key employees during 2004. The following outlines the unrecognized compensation cost associated with the outstanding Restricted Share awards under the Incentive Plan for the years ended December 31, 2006, 2005 and 2004:

       

       

      Year Ended December 31,

       

       

       

      2006

       

      2005

       

      2004

       

       

       

      Restricted 

       

      Unamortized
      Grant Date
      Fair

       

      Restricted 

       

      Unamortized
      Grant Date
      Fair

       

      Restricted 

       

      Unamortized
      Grant Date
      Fair

       

      Millions, except share amounts

       

      Shares

       

      Value

       

      Shares

       

      Value

       

      Shares

       

      Value

       

      Non-vested, beginning of year

       

      13,000

       

      $

      1.9

       

      15,000

       

      $

      4.2

       

      6,000

       

      $

      1.5

       

      Granted

       

       

       

       

       

      10,000

       

      4.7

       

      Vested

       

      (3,000

      )

       

      (1,000

      )

       

      (1,000

      )

       

      Forfeited

       

       

       

      (1,000

      )

      (0.3

      )

       

       

      Expense recognized

       

       

      (1.6

      )

       

      (2.0

      )

       

      (2.0

      )

      Non-vested at end of year

       

      10,000

       

      $

      .3

       

      13,000

       

      $

      1.9

       

      15,000

       

      $

      4.2

       

      The 10,000 Restricted Shares outstanding at December 31, 2006 are scheduled to cliff vest on February 23, 2007. The unrecognized compensation cost of $.3 million at December 31, 2006 is expected to be recognized over the remaining vesting period. Vesting is dependent on continuous service by the employee throughout the award period. Upon vesting, all restrictions initially placed upon the common shares lapse.

      Upon adopting FAS 123R, on January 1, 2006 White Mountains recorded an adjustment of $1.9 million to reclassify unearned compensation in common shareholders’ equity relating to its outstanding Restricted Shares to opening paid-in surplus to reflect the cumulative effect of adoption.

      Stock Options

      Incentive Options

      At December 31, 2006, 2005 and 2004, the Company had 29,550, 34,280 and 46,530 Incentive Options outstanding which were granted to certain key employees on February 28, 2000 (the grant date) under the Incentive Plan. The 81,000 Incentive Options originally granted were issued at an exercise price equal to the market price of the Company’s underlying common shares on February 27, 2000. The exercise price escalates by 6% per annum over the life of the Incentive Options. The Incentive Options vest ratably over a ten-year service period. The fair value of each Incentive Option award at the grant date was estimated using a closed-form option model using an expected volatility assumption of 18.5%, a risk-free interest rate assumption of 6.4% and an expected term of ten years.


      The following summarizes the Company’s Incentive Option activity for the years ended December 31, 2006, 2005 and 2004:

       

       

      Year ending December 31,

       

      Millions, except share and per share amounts

       

      2006

       

      2005

       

      2004

       

      Opening balance - outstanding Incentive Options

       

      34,280

       

      46,530

       

      50,565

       

      Forfeited

       

      (1,200

      )

      (4,500

      )

       

      Exercised

       

      (3,530

      )

      (7,750

      )

      (4,035

      )

      Ending balance - outstanding Incentive Options

       

      29,550

       

      34,280

       

      46,530

       

       

       

       

       

       

       

       

       

      Opening balance - exercisable Incentive Options

       

      9,080

       

      10,530

       

      7,365

       

      Vested

       

      6,000

       

      6,300

       

      7,200

       

      Exercised

       

      (3,530

      )

      (7,750

      )

      (4,035

      )

      Ending balance - exercisable Incentive Options

       

      11,550

       

      9,080

       

      10,530

       

       

       

       

       

       

       

       

       

      Intrinsic value of Incentive Options exercised

       

      $

      1.5

       

      $

      3.4

       

      $

      1.9

       

      Exercise price - beginning of year

       

      $

      149.25

       

      $

      140.80

       

      $

      132.83

       

      Exercise price - end of year

       

      $

      158.21

       

      $

      149.25

       

      $

      140.80

       

       

       

       

       

       

       

       

       

      Compensation expense (income)

       

      $

       

      $

      (3.5

      )

      $

      9.0

       

      The total in-the-money value of all outstanding Incentive Options and those Incentive Options currently exercisable at December 31, 2006 was $12.5 million and $4.9 million. The Incentive Options expire in February of 2010. White Mountains expects approximately 6,000 Incentive Options to become exercisable in 2007 and will issue common shares when the Incentive Options are exercised.

      Non-Qualified Options

      In November 2006, in connection with the Offering, OneBeacon Ltd. issued to its key employees 1,420,000 fixed-price Non-Qualified Options to acquire OneBeacon Ltd. common shares. The exercise price of the Non-Qualified Options were set at 20% above the middle of the price range in OneBeacon’s preliminary prospectus for the OneBeacon Offering or $30.00. The Non-Qualified Options vest in equal installments on each of the third, fourth and fifth anniversaries of the date of the OneBeacon Offering and have a 5.5 year term. The fair value of each Non-Qualified Option award at the grant date was estimated using a closed-form option model using an expected volatility assumption of 30%, a risk-free interest rate assumption of 4.6%, a forfeiture assumption of 5%, an expected dividend rate assumption of 3.4% and an expected term assumption of 5.5 years. OneBeacon Ltd. recognized $.2 million of expense during 2006 associated with its Non-Qualified Options.

      Share-Based Compensation Under Qualified Retirement Plans

      As of December 31, 2006 and 2005, the 401(k) Plans owned less than 1% of the total Company’s common shares outstanding. For 2007, OneBeacon expects to offer its employees the ability to invest their balances in several different investment options, including the Company’s and OneBeacon Ltd.’s common shares.

      The variable contribution amounts earned by eligible participants of the ESOP contingent upon OneBeacon's performance.constituted approximately 6%, 3% and 4.5% of salary for the years ended 2006, 2005 and 2004. OneBeacon accruedrecorded $15.5 million, $7.8 million and $13.3 million in compensation expense to pay benefits and allocate common shares of stock to participant'sparticipant’s accounts infor the first quarter ofyears ended 2006, 2005 and paid $13.2 million in benefits2004. The contributions made to allocatethe ESOP with respect to the years ended 2004 and 2005 were made with the Company’s common shares of stockand the contributions made to participant's accounts during the first quarter of 2004.ESOP with respect to the year ended 2006 were made with OneBeacon Ltd. common shares.

      F-50





      NOTE 10. Mandatorily Redeemable Preferred Stock of Subsidiaries and Convertible Preference Shares

      Mandatorily Redeemable Preferred Stock

              In July 2003, White Mountains adopted the provisions of SFAS 150 and it subsequently adopted FSP 150-3 in November 2003 (See Note 1).         White Mountains has two classes of mandatorily redeemable preferred stock of subsidiaries which were previously classified as minority interests, that fellfall within the scope of SFAS No. 150, “Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity” and are considered noncontrolling interests under FSPFASB Staff Position No. 150-3. Upon adoption of SFAS 150 in 2003,Accordingly, White Mountains reclassifiedclassifies these instruments from mezzanine equity toas liabilities and has recorded them at their historical carrying values. In addition, beginning in the third quarter of 2003, allAll dividends and accretion on White Mountains'Mountains’ mandatorily redeemable preferred stock have been recorded as interest expense. During the years ended December 31, 20042006, 2005 and 20032004, White Mountains recorded $47.6$58.6 million, $52.4 million and $22.3$47.6 million respectively as interest expense on preferred stock (of which $17.3 million and $7.2 million, respectively, represented accretion of discount).stock.

      Berkshire Preferred Stock

               As part of the financing for the OneBeacon Acquisition, Berkshire invested a total of $300 million in cash, of which (i)(1) $225 million was for the purchase of the Berkshirecumulative non-voting preferred stock of Fund American (the “Berkshire Preferred Stock,Stock”), which has a $300 million redemption value; and (ii)(2) $75 million was for the purchase of warrants to acquire 1,724,200 common shares of the Warrants.Company. The Berkshire Preferred Stock is entitled to a dividend of no less than 2.35% per quarter and is mandatorily redeemable on May 31, 2008. The Berkshire Preferred Stock was initially recorded at $145.2 million, as the aggregate proceeds received from Berkshire of $300 million were originally allocated between the Berkshire Preferred Stock and the Warrants,warrants, based on their relative fair values, in accordance with Accounting Principles Board Opinion No. 14, "Accounting“Accounting for Convertible Debt and Debt Issued with Stock Purchase Warrants"Warrants”. The difference between the redemption value and the amount initially recorded for the Berkshire Preferred Stock will be accreted through the income statement as interest expense. Through December 31, 2004,2006, the carrying value of the Berkshire Preferred Stock had been accreted up to $191.9$242.3 million.

      During each of 2004, 2003the years ended December 31, 2006, 2005 and 2002,2004, White Mountains declared and paid dividends of $28.2 million on the Berkshire Preferred StockStock. During the years ended December 31, 2006, 2005 and 2004, White Mountains recorded $17.3$28.3 million, $13.6$22.1 million and $10.6 million, respectively, of related accretion charges. In accordance with SFAS 150, $28.2 million and $14.1 million, respectively of the dividends and $17.3 million and $7.2 million, respectivelyof accretion charges related to the Berkshire Preferred Stock.

      Zenith Preferred Stock

               Also as part of the accretion recorded duringfinancing for the year ended December 31, 2004 and during the second half of 2003 are presented as interest expense on mandatorily redeemable preferred stock.

      Zenith Preferred Stock

              On June 1, 2001,OneBeacon Acquisition, Zenith Insurance Company ("Zenith"(“Zenith”) purchased $20.0 million in cumulative non-voting preferred stock of a subsidiary of the Company (the "Zenith“Zenith Preferred Stock"Stock”). The Zenith



      Preferred Stock is entitled to a dividend of no less than a 2.5% per quarter through June 30, 2007 and a dividend of no less than 3.5% per quarter thereafter and is mandatorily redeemable on May 31, 2011. At the Company'sWhite Mountains’ option, which it expects to exercise, the Zenith Preferred Stock may be redeemed on June 30, 2007. During 2004, 20032006, 2005 and 2002,2004, White Mountains declared and paid dividends of $2.0 million, $2.0 million and $2.1$2.0 million respectively, on the Zenith Preferred Stock.

      Economic Defeasance

               In accordanceconnection with SFAS 150, $2.0 millionthe OneBeacon Offering, White Mountains established two irrevocable grantor trusts to economically defease the Berkshire Preferred Stock and $1.0 million, respectivelythe Zenith Preferred Stock. The assets of each trust are solely dedicated to the satisfaction of the payment of dividends recorded duringand redemption amounts on the year ended$300 million liquidation preference of the Berkshire Preferred Stock and the $20 million liquidation preference of the Zenith Preferred Stock. Concurrently with the closing of the OneBeacon Offering, White Mountains funded the trusts with cash that was used to purchase a portfolio of fixed maturity securities issued by the U.S. government or government-sponsored enterprises. The scheduled interest and principal payments of the portfolio of fixed maturity securities in each trust is sufficient to pay when due all amounts required under the terms of the Berkshire Preferred Stock and the Zenith Preferred Stock, including the mandatory redemption of the Berkshire Preferred Stock in May 2008 and the optional redemption of the Zenith Preferred Stock in June 2007. As of December 31, 2004 and during2006, the second half of 2003 are presented as interest expense on mandatorily redeemable preferred stock.

      Convertible Preference Shares

              In October of 2002, White Mountains sold $200.0 million of convertible preference shares in a private transaction. Investment funds managed by Franklin Mutual Advisers, LLC purchased 677,966 convertible preference shares of the Company at a price of $200.0 million ($295.00 per share). Upon shareholder approval at the Company's Annual Meeting held on May 19, 2003, the convertible preference shares were repurchased and cancelled in consideration of 677,966 Common Shares. Because the redemptioncarrying value of the convertible preference sharesinvestments held in trust was in excess of the cash received upon their issuance, they were required to be marked-to-market until the date they were converted to shareholders' equity, resulting in a cumulative $68.5 million charge to retained earnings ($49.5 million of which was recognized during the year ended December 31, 2003), with an offsetting increase to paid-in surplus.$338.9 million.



      NOTE 11. Common Shareholders'Shareholders’ Equity

      Common Sharesshares repurchased and retired

       

      During 2006 and 2005, the Company did not repurchase any common shares. During 2004, 2003 and 2002, the Company repurchased for cash 97 Common Sharescommon shares for $.1 million, 284 Common Shares for $.1 million and 489 Common Shares for $.2 million respectively.million. In addition, during 2004, 20032006, 2005 and 20022004 the Company repurchased 0, 316 39,274 and 20,750, respectively,316 outstanding Restricted Shares held by certain key employees who were instead granted the market value of such shares in various non-qualified deferred compensation plans of the Company and its subsidiaries (See Note 9). During 2005, the Company cancelled and retired 1,000 Restricted Shares that were forfeited by a former employee. In conformance with Bermuda law, the Company retires all Common Sharescommon shares it repurchases.



      Common Sharesshares issued

       

      On June 29, 2004, Berkshire exercised all of its warrants to purchase 1,724,200 Common Sharescommon shares of White Mountains for $294 million. As a result, Berkshire now holds approximately 16.0% of White Mountains'Mountains’ outstanding common stock.stock at December 31, 2006 and 2005. Berkshire acquired the warrants in connection with the financing of White Mountains'Mountains’ acquisition of OneBeacon in 2001. The warrants were exercisable at any time until May 2008 and callable by the Company on or after May 31, 2005. In consideration for the early exercise of the warrants, Berkshire and the Company agreed to reduce the exercise price by approximately 2%.

              InDuring 2006, the Company issued a total of 3,530 common shares, which consisted of shares issued in satisfaction of Options exercised. During 2005, the Company issued a total of 7,750 common shares, which consisted of shares issued in satisfaction of Options exercised. During 2004, in addition to the Berkshire warrant exercise, during the year ended December 31, 2004, the Company issued a total of 41,807 Common Shares,common shares, which consisted of 27,772 shares issued to the OneBeacon employee stock ownership plan, 10,000 Restricted Shares issued to key management personnel, and 4,035 shares issued in satisfaction of Options exercised. During 2003, the Company issued a total of 695,366 Common Shares, which consisted of 677,966 Common Shares issued in connection with the repurchase and cancellation of Convertible Preference Shares and 17,400 Common Shares issued to employees in connection with various White Mountains share-based compensation plans. During 2002, the Company issued a total of 107,945 Common Shares, which consisted of 84,745 Common Shares issued in a private equity transaction with Highfields for $25.0 million ($295.00 per



      Common Share) and 23,200 Common Shares issued to employees in connection with various White Mountains share-based compensation plans.

      Dividends on Common Sharescommon shares

      During 2004, 20032006, 2005 and 2002,2004, the Company declared and paid cash dividends totalling $86.2 million (or $8.00 per common share), $86.2 million (or $8.00 per common share) and $9.1 million (or $1.00 per Common Share), $8.3 million (or $1.00 per Common Share) and $8.3 million (or $1.00 per Common Share)common share), respectively.


      NOTE 12. Statutory Capital and Surplus

       

      White Mountains'Mountains’ insurance and reinsurance operations are subject to regulation and supervision in each of the jurisdictions where they are domiciled and licensed to conduct business. Generally, regulatory authorities have broad supervisory and administrative powers over such matters as licenses, standards of solvency, premium rates, policy forms, investments, security deposits, methods of accounting, form and content of financial statements, reserves for unpaid loss and LAE, reinsurance, minimum capital and surplus requirements, dividends and other distributions to shareholders, periodic examinations and annual and other report filings. In general, such regulation is for the protection of policyholders rather than shareholders. Over the last several years most states have implemented laws that establish standards for current, as well as continued, state accreditation. In addition, the NAIC uses risk-based capital ("RBC"(“RBC”) standards for property and casualty insurers as a means of monitoring certain aspects affecting the overall financial condition of insurance companies. At December 31, 2004,2006, White Mountains'Mountains’ active insurance and reinsurance operating subsidiaries met their respective RBC requirements.

       OneBeacon's

      OneBeacon’s consolidated combined policyholders'policyholders’ surplus (which includes Folksamerica and its subsidiaries at December 31, 2003), as reported to various regulatory authorities as of December 31, 20042006 and 2003,2005, was $1,773.4$2,013.1 million and $2,810.8 million, respectively. OneBeacon's$1,675.9 million. OneBeacon’s consolidated combined statutory net income (loss) for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 was $314.2$372.0 million, $472.1$212.7 million and $342.6 million, respectively.$381.9 million. The principal differences between OneBeacon'sOneBeacon’s combined statutory amounts and the amounts reported in accordance with GAAP include deferred acquisition costs, deferred taxes, gains recognized under retroactive reinsurance contracts, market value adjustments for debt securities and recognition of pension plan curtailment gains. OneBeacon'sOneBeacon’s insurance subsidiaries'subsidiaries’ statutory policyholders'policyholders’ surplus at December 31, 20042006 was in excess of the minimum requirements of relevant state insurance regulations.


      Folksamerica Reinsurance Company's, ("Folksamerica Re") policyholders'Re’s policyholders’ surplus, as reported to various regulatory authorities as of December 31, 20042006 and 2003,2005, was $917.4$1,153.3 million and $912.8 million, respectively.$1,074.2 million. Folksamerica Re'sRe’s statutory net income (loss) for the years ended December 31, 2006, 2005 and 2004 2003 and 2002 was $(1.0)$46.9 million, $33.0$(81.7) million and $58.2 million, respectively.$(1.0) million. The principal differences between Folksamerica Re'sRe’s statutory amounts and the amounts reported in accordance with GAAP include deferred acquisition costs, deferred taxes, gains recognized under retroactive reinsurance contracts and market value adjustments for debt securities. Folksamerica Re'sRe’s statutory policyholders'policyholders’ surplus at December 31, 20042006 was in excess of the minimum requirements of relevant state insurance regulations.

       

      In accordance with Swedish regulations, Sirius International holds restricted reserves of $902 million, which represents 72% of untaxed reserves, as a component Swedish statutory shareholders’ equity. These restricted reserves cannot be paid as dividends. Sirius International’s regulatory capital at December 31, 2006, which includes Scandinavian Re and its other subsidiaries, was $1.4 billion.

      Dividend Capacity

      Under the insurance laws of the states and jurisdictions under which White Mountains' regulatedMountains’ insurance and reinsurance operating subsidiaries are domiciled, an insurer is restricted with respect to the timing andor the amount of dividends it may pay without prior approval by regulatory authorities. Accordingly, there can be no assurance regarding the amount of such dividends that may be paid by such subsidiaries in the future. Following is a description of the ability of White MountainsMountains’ insurance and reinsurance operating



      subsidiaries to make pay dividends during 2005 to the Company and certain of its intermediate holding companies:

      OneBeacon:

      Subsequent to the OneBeacon Offering, the Company and its intermediate holding companies expect to receive regular shareholder dividends from OneBeacon, Ltd. The board of OneBeacon Ltd. has authorized quarterly dividend payments of $0.21 per share, commencing in the first quarter of 2007.

      Generally, OneBeacon'sOneBeacon’s regulated insurance operating subsidiaries have the ability to pay dividends during any 12 month period without the prior approval of regulatory authorities in an amount equal to the greater of prior year statutory net income or 10% of prior year end statutory surplus, subject to the availability of unassigned funds. As a result, based upon 20042006 statutory net income OneBeacon'sOneBeacon’s top tier regulated insurance operating subsidiaries have the ability to pay $325.2approximately $234.3 million of dividends during 20052007 without prior approval of regulatory authorities, subject to the availability of unassigned funds. As ofAt December 31, 2004, OneBeacon's2006, OneBeacon’s top tier regulated insurance operating subsidiaries had $1.3$1.6 billion of unassigned funds available for dividend distribution. funds.

      In addition, as of December 31, 2004,2006, OneBeacon had $195.0approximately $30.7 million of unrestricted cash and fixed maturity investments outside of its regulated insurance operating subsidies available for distribution during 2005.subsidiaries and OneBeacon Ltd. and its intermediate holding companies had an additional $65.8 million of unrestricted cash and fixed maturity investments. During 2004,2006, OneBeacon paid $305$90.1 million of cash dividends to Fund American.American and OneBeacon Ltd. paid $12.0 million of dividends to its immediate parent.

       

      White Mountains Re:

      Folksamerica Re has the ability to pay dividends during any 12 month period without the prior approval of regulatory authorities in an amount equal to the lesser of net investment income, as defined by statute, or 10% of statutory surplus, in both cases as most recently reported to regulatory authorities, subject to the availability of earned surplus. As a result, based upon December 31, 20042006 statutory surplus of $917.4$1,153.3 million, Folksamerica Re would have the ability to pay approximately $91.7$115.3 million of dividends during 20052007 without prior approval of regulatory authorities, subject to the availability of earned surplus. As of December 31, 2004,2006, Folksamerica Re had $16.8$0.6 million of earned surplus, therefore it can pay dividends of $16.8 million plus additional earned surplus reported during 2005, subject to the $91.7 million limitation discussed above.surplus.

       As

      In addition, as of December 31, 2004, WMU2006, Folksamerica had $3.2approximately $31.0 million of unrestricted cash and fixed maturity investments available for distribution during 2005. In addition, WMU has the ability to distributeoutside of its 2005 earnings without restriction.regulated insurance operating subsidiaries. During 2004, WMU2006, Folksamerica Re paid $60.0$5.0 million of cashin dividends to its immediate parent.

              In addition,Sirius International has the ability to pay dividends subject to the availability of unrestricted statutory surplus. Historically, Sirius International has allocated the majority of its earnings to the Safety Reserve (see “Safety Reserve” below). As a result, as of December 31, 2004, White Mountains ReDecember31, 2006, Sirius International had approximately $97 million of cash and investments outside of its regulated insurance and reinsurance operating subsidiaries available for distribution during 2005.no unrestricted statutory surplus.

      In accordance with Swedish regulations, Sirius International holds restricted reserves of $808.1 million, which represents 72% of its untaxed reserves (See Liquidity and Capital Resources within the Management Discussion and Analysis for information). These restrictions are based on stockholder's equity determined on a Swedish statutory basis. These restricted reserves can not be paid as dividends. At December 31, 2004 Sirius International is in compliance with these restrictions. Sirius International's actual statutory surplus at December 31, 2004, which includes Scandinavian Re and its other subsidiaries is $1.3 billion.

      Safety Reserve

              In accordance with provisions of Swedish law, Sirius International can voluntarily transfer its pretax earnings,pre-tax income, or a portion thereof, subject to certain limitations, to its parent company to minimize taxes. In early 2007, Sirius International will transfer approximately $35.0 million of its 2006 pre-tax income to its parent company.

      WMRUS has the ability to distribute its 2007 earnings without restriction. At December 31, 2006, WMRUS had $7.0 million of unrestricted cash. During 2006, WMRUS paid $14.0 million of cash dividends to its immediate parent.

      In addition, as of December 31, 2006, White Mountains Re and its intermediate holding companies had an additional $25.8 million of unrestricted cash and fixed maturity investments outside of Folksamerica, Sirius and WMRUS. During 2006, White Mountains Re paid $45.9 million of dividends to its immediate parent.

      Esurance:

      Generally, Esurance’s regulated insurance operating subsidiaries have the ability to pay dividends during any 12 month period without the prior approval of regulatory authorities in an amount equal to the lesser of prior year statutory net income or 10% of prior year end statutory surplus, subject to the availability of unassigned funds. As a result, based on December 31, 2006 statutory net income, Esurance’s top tier regulated insurance operating subsidiary has the ability to pay $4.2 million of dividends during 2007 without prior approval of regulatory authorities, subject to the availability of unassigned funds. As of December 31,2006, Esurance’s top tier regulated insurance operating subsidiary had $21.2 million of unassigned funds.


      In addition, as of December 31, 2006, Esurance had $2.5 million of unrestricted cash and fixed maturity investments outside of its regulated insurance operating subsidiaries. During 2006, Esurance did not pay any cash dividends to its immediate parent.

      Other Operations:

      As of December 31, 2006, White Mountains had $496.7 million of unrestricted cash and fixed maturity investments at the Company and its intermediate holding companies included in its other operations segment.

      Safety Reserve

      In accordance with provisions of Swedish law, Sirius International is permitted to transfer up to the full amount of its pre-tax income, subject to certain limitations, into an untaxed reserve referred to as a safety reserve. The safety reserve, is a Swedish regulatory concept that has no equivalent under GAAP. Accordingly, underwhich amounted to $1.3 billion at December 31, 2006. Under GAAP, an amount equal to Sirius International'sthe safety reserve, of $1.1 billion at December 31, 2004, net of the related deferred tax liability established at the statutory Swedish tax rate of 28%, is classified as shareholders’ equity. Generally, this deferred tax liability is only required to be paid by Sirius International if it fails to maintain predetermined levels of premium writings and loss reserves in future years. As a result of the indefinite deferral of these taxes, Swedish regulatory authorities do not apply any taxes to the safety reserve when calculating solvency capital under Swedish insurance regulations. Accordingly, under local statutory requirements, an amount equal to the deferred tax liability on Sirius International’s safety reserve ($351 million at December 31, 2006) is included in solvency capital.



      NOTE 13. Segment Information

      White Mountains has determined that its reportable segments are "OneBeacon", "White Mountains Re" (consisting of the operations of Folksamerica, Sirius and WMU), "Esurance" and "Other Operations" (consisting of White Mountains' investments in Montpelier and Symetra warrants, the International American Group, the Company and its intermediate subsidiary holding companies). During 2004,OneBeacon, White Mountains expanded its segment disclosure to includeRe, Esurance as a separate segment. As a result, amounts presented in prior periods have been reclassified to conform with the current presentation.

      and Other Operations. White Mountains has made its segment determination based on consideration of the following criteria: (i) the nature of the business activities of each of the Company'sCompany’s subsidiaries and affiliates; (ii) the manner in which the Company'sCompany’s subsidiaries and affiliates are organized; (iii) the existence of primary managers responsible for specific subsidiaries and affiliates; and (iv) the organization of information provided to the Board of Directors. Significant intercompany transactions among White Mountains'Mountains’ segments have been eliminated herein. Certain amounts in theSegment information for all prior periods havehas been reclassified to conform withrestated for the current presentation.effect of the Reorganization (See Note 1). Financial information for White Mountains'Mountains’ segments follows:

       
       OneBeacon
       White
      Mountains Re

       Esurance
       Other
      Operations

       Total
       
       Millions

      Year ended December 31, 2004               
      Earned insurance and reinsurance premiums $2,378.5 $1,265.5 $176.5 $ $3,820.5
      Net investment income  221.4  98.5  3.5  37.5  360.9
      Net realized gains  129.6  29.6  1.1  20.8  181.1
      Other revenue  141.8  36.1  2.2  10.4  190.5
        
       
       
       
       
      Total revenues  2,871.3  1,429.7  183.3  68.7  4,553.0
        
       
       
       
       
      Loss and LAE  1,545.2  918.9  122.4  4.6  2,591.1
      Insurance and reinsurance acquisition expenses  442.3  271.8  29.4    743.5
      Other underwriting expenses  369.2  122.9  27.7  1.5  521.3
      General and administrative expenses  122.2  15.1    172.0  309.3
      Accretion of fair value adjustment to loss and LAE reserves    10.1    33.2  43.3
      Interest expense on debt  1.0  3.8    44.3  49.1
      Interest expense—dividends and accretion on preferred stock subject to mandatory redemption        47.6  47.6
        
       
       
       
       
      Total expenses  2,479.9  1,342.6  179.5  303.2  4,305.2
        
       
       
       
       
      Pretax earnings (loss) $391.4 $87.1 $3.8 $(234.5)$247.8
        
       
       
       
       


       

       

      OneBeacon


       

      White
      Mountains Re


       

      Esurance


       

      Other
      Operations


       

      Total

       
       Millions

      Year ended December 31, 2003               
      Earned insurance and reinsurance premiums $2,160.3 $845.8 $99.9 $31.7 $3,137.7
      Net investment income  223.7  50.4  1.3  15.5  290.9
      Net realized gains (losses)  127.0  7.7  .2  27.7  162.6
      Other revenue  90.5  75.5  .3  36.3  202.6
        
       
       
       
       
      Total revenues  2,601.5  979.4  101.7  111.2  3,793.8
        
       
       
       
       
      Loss and LAE  1,475.6  557.6  81.0  23.9  2,138.1
      Insurance and reinsurance acquisition expenses  394.2  198.0  18.8  4.0  615.0
      Other underwriting expenses  258.7  57.8  20.4  10.2  347.1
      General and administrative expenses  67.6  19.6    114.6  201.8
      Accretion of fair value adjustment to loss and LAE reserves        48.6  48.6
      Interest expense on debt  .3  2.0    46.3  48.6
      Interest expense—dividends and accretion on preferred stock subject to mandatory redemption        22.3  22.3
        
       
       
       
       
      Total expenses  2,196.4  835.0  120.2  269.9  3,421.5
        
       
       
       
       
      Pretax earnings (loss) $405.1 $144.4 $(18.5)$(158.7)$372.3
        
       
       
       
       
      Year ended December 31, 2002               
      Earned insurance and reinsurance premiums $2,870.9 $635.0 $40.8 $29.7 $3,576.4
      Net investment income  314.0  51.5  1.2  (.7) 366.0
      Net realized gains (losses)  113.0  30.3    12.7  156.0
      Amortization of deferred credits and other revenue  14.4  53.6  1.6  39.9  109.5
        
       
       
       
       
      Total revenues  3,312.3  770.4  43.6  81.6  4,207.9
        
       
       
       
       
      Loss and LAE  2,131.3  442.2  36.6  28.1  2,638.2
      Insurance and reinsurance acquisition expenses  629.6  161.2  9.7  3.8  804.3
      Other underwriting expenses  329.2  41.0  22.4  9.1  401.7
      General and administrative expenses  22.4  20.6    49.7  92.7
      Accretion of fair value adjustment to loss and LAE reserves        79.8  79.8
      Interest expense on debt    2.0    69.8  71.8
        
       
       
       
       
      Total expenses  3,112.5  667.0  68.7  240.3  4,088.5
        
       
       
       
       
      Pretax loss $199.8 $103.4 $(25.1)$(158.7)$119.4
        
       
       
       
       

       

       

       

       

      White

       

       

       

      Other

       

       

       

      Millions

       

       

      OneBeacon

       

      Mountains Re

       

      Esurance

       

      Operations

       

      Total

       

      Year ended December 31, 2006

       

       

       

       

       

       

       

       

       

       

       

      Earned insurance and reinsurance premiums

       

      $

      1,944.0

       

      $

      1,241.2

       

      $

      527.5

       

      $

       

      $

      3,712.7

       

      Net investment income

       

      187.6

       

      182.7

       

      18.4

       

      46.8

       

      435.5

       

      Net realized investment gains

       

      156.4

       

      59.0

       

      6.9

       

      50.4

       

      272.7

       

      Gain on sale of shares of OneBeacon Insurance Group, Ltd.

       

       

       

       

      171.3

       

      171.3

       

      Other revenue

       

      38.8

       

      47.8

       

      7.4

       

      108.0

       

      202.0

       

      Total revenues

       

      2,326.8

       

      1,530.7

       

      560.2

       

      376.5

       

      4,794.2

       

      Losses and LAE

       

      1,180.3

       

      884.6

       

      383.9

       

      3.9

       

      2,452.7

       

      Insurance and reinsurance acquisition expenses

       

      332.3

       

      287.2

       

      135.3

       

       

      754.8

       

      Other underwriting expenses

       

      360.1

       

      94.7

       

      48.8

       

      1.8

       

      505.4

       

      General and administrative expenses

       

      15.3

       

      24.2

       

      .2

       

      178.6

       

      218.3

       

      Accretion of fair value adjustment to loss and LAE reserves

       

      23.0

       

      1.5

       

       

       

      24.5

       

      Interest expense on debt

       

      45.6

       

      1.5

       

       

      3.0

       

      50.1

       

      Interest expense - dividends and accretion on preferred stock

       

      58.6

       

       

       

       

      58.6

       

      Total expenses

       

      2,015.2

       

      1,293.7

       

      568.2

       

      187.3

       

      4,064.4

       

      Pretax income (loss)

       

      $

      311.6

       

      $

      237.0

       

      $

      (8.0

      )

      $

      189.2

       

      $

      729.8

       

      Year ended December 31, 2005

      Earned insurance and reinsurance premiums

       

      $

      2,118.4

       

      $

      1,371.6

       

      $

      306.8

       

      $

      1.8

       

      $

      3,798.6

       

      Net investment income

       

      242.4

       

      148.9

       

      9.8

       

      90.4

       

      491.5

       

      Net realized investment gains (losses)

       

      122.8

       

      76.8

       

      2.1

       

      (89.1

      )

      112.6

       

      Other revenue

       

      50.3

       

      33.5

       

      3.0

       

      142.4

       

      229.2

       

      Total revenues

       

      2,533.9

       

      1,630.8

       

      321.7

       

      145.5

       

      4,631.9

       

      Losses and LAE

       

      1,401.5

       

      1,237.9

       

      206.2

       

      12.6

       

      2,858.2

       

      Insurance and reinsurance acquisition expenses

       

      390.7

       

      279.6

       

      90.8

       

      0.1

       

      761.2

       

      Other underwriting expenses

       

      278.9

       

      107.0

       

      37.2

       

      1.6

       

      424.7

       

      General and administrative expenses

       

      8.4

       

      12.4

       

       

      128.0

       

      148.8

       

      Accretion of fair value adjustment to loss and LAE reserves

       

      26.0

       

      10.9

       

       

       

      36.9

       

      Interest expense on debt

       

      44.1

       

      0.4

       

       

       

      44.5

       

      Interest expense - dividends and accretion on preferred stock

       

      52.4

       

       

       

       

      52.4

       

      Total expenses

       

      2,202.0

       

      1,648.2

       

      334.2

       

      142.3

       

      4,326.7

       

      Pretax income (loss)

       

      $

      331.9

       

      $

      (17.4

      )

      $

      (12.5

      )

      $

      3.2

       

      $

      305.2

       



      Selected Balance Sheet Data


       

      OneBeacon


       

      White
      Mountains Re


       

      Esurance


       

      Other
      Operations


       

      Total

       
       Millions

      December 31, 2004               
      Total investments $5,391.6 $4,292.2 $111.9 $733.8 $10,529.5
      Reinsurance recoverable on paid and unpaid losses  2,757.2  1,388.7  .2  (256.7) 3,889.4
      Total assets  9,979.6  8,152.5  241.7  641.9  19,015.1
      Loss and LAE reserves  5,475.5  4,170.3  63.0  (310.3) 9,398.5
      Total liabilities  7,686.8  6,471.1  132.7  840.6  15,131.2
      Total equity  2,292.2  1,681.4  109.0(1) (198.7) 3,883.9
        
       
       
       
       
      December 31, 2003               
      Total investments $5,552.3 $1,951.1 $80.9 $963.2 $8,547.5
      Reinsurance recoverable on paid and unpaid losses  3,048.6  791.5    (244.6) 3,595.5
      Total assets  11,286.0  3,644.1  195.7  756.2  15,882.0
      Loss and LAE reserves  6,241.2  1,777.2  39.1  (329.3) 7,728.2
      Total liabilities  9,064.5  2,611.9  102.7  1,123.7  12,902.8
      Total equity  2,221.5  1,032.2  93.0  (367.5) 2,979.2
        
       
       
       
       

      (1)
      Esurance equity includes approximately $44 million of inception to date losses. Total GAAP capital committed from White Mountains to Esurance is approximately $153 million.

       

       

       

       

       

      White 

       

       

       

      Other

       

       

       

      Millions

       

       

      OneBeacon

       

      Mountains Re

       

      Esurance

       

      Operations

       

      Total

       

      Year ended December 31, 2004

       

       

       

       

       

       

       

       

       

       

       

      Earned insurance and reinsurance premiums

       

      $

      2,378.5

       

      $

      1,265.5

       

      $

      176.5

       

      $

       

      $

      3,820.5

       

      Net investment income

       

      219.9

       

      98.5

       

      3.5

       

      39.0

       

      360.9

       

      Net realized investment gains

       

      129.4

       

      29.6

       

      1.1

       

      21.0

       

      181.1

       

      Other revenue

       

      59.5

       

      36.1

       

      2.2

       

      95.0

       

      192.8

       

      Total revenues

       

      2,787.3

       

      1,429.7

       

      183.3

       

      155.0

       

      4,555.3

       

      Losses and LAE

       

      1,545.2

       

      918.9

       

      122.4

       

      4.6

       

      2,591.1

       

      Insurance and reinsurance acquisition expenses

       

      442.3

       

      271.8

       

      30.3

       

       

      744.4

       

      Other underwriting expenses

       

      369.2

       

      122.9

       

      26.8

       

      1.5

       

      520.4

       

      General and administrative expenses

       

      81.9

       

      15.1

       

       

      204.0

       

      301.0

       

      Accretion of fair value adjustment to loss and LAE reserves

       

      33.2

       

      10.1

       

       

       

      43.3

       

      Interest expense on debt

       

      45.0

       

      3.8

       

       

      .3

       

      49.1

       

      Interest expense - dividends and accretion on preferred stock

       

      47.6

       

       

       

       

      47.6

       

      Total expenses

       

      2,564.4

       

      1,342.6

       

      179.5

       

      210.4

       

      4,296.9

       

      Pretax income (loss)

       

      $

      222.9

       

      $

      87.1

       

      $

      3.8

       

      $

      (55.4

      )

      $

      258.4

       

      Millions

       

       

       

      White

       

       

       

      Other

       

       

       

      Selected Balance Sheet Data

       

      OneBeacon

       

      Mountains Re

       

      Esurance

       

      Operations

       

      Total

       

      December 31, 2006

       

       

       

       

       

       

       

       

       

       

       

      Total investments

       

      $

      5,212.2

       

      $

      4,568.7

       

      $

      518.8

       

      $

      1,033.0

       

      $

      11,332.7

       

      Reinsurance recoverable on paid and unpaid losses

       

      2,875.0

       

      1,269.1

       

      .7

       

      30.3

       

      4,175.1

       

      Total assets

       

      9,866.8

       

      7,344.9

       

      723.6

       

      1,508.4

       

      19,443.7

       

      Loss and LAE reserves

       

      4,837.7

       

      3,708.8

       

      167.4

       

      63.3

       

      8,777.2

       

      Total liabilities

       

      8,089.6

       

      5,239.6

       

      415.1

       

      640.9

       

      14,385.2

       

      Minority interest

       

       

       

       

      603.2

       

      603.2

       

      Total common shareholders’ equity

       

      1,777.2

       

      2,105.3

       

      308.5

       

      264.3

       

      4,455.3

       

      December 31, 2005

      Total investments

       

      $

      4,793.0

       

      $

      4,231.0

       

      $

      289.7

       

      $

      552.7

       

      $

      9,866.4

       

      Reinsurance recoverable on paid and unpaid losses

       

      3,145.2

       

      1,931.0

       

      .2

       

      26.3

       

      5,102.7

       

      Total assets

       

      9,768.0

       

      8,458.2

       

      414.2

       

      777.7

       

      19,418.1

       

      Loss and LAE reserves

       

      5,395.9

       

      4,680.3

       

      94.1

       

      60.9

       

      10,231.2

       

      Total liabilities

       

      8,423.3

       

      6,519.7

       

      237.5

       

      308.0

       

      15,488.5

       

      Minority interest

       

       

       

       

      96.4

       

      96.4

       

      Total common shareholders’ equity

       

      1,344.7

       

      1,938.5

       

      176.7

       

      373.3

       

      3,833.2

       


      The following tables provide net written premiums and earned insurance premiums for OneBeacon'sOneBeacon’s ongoing businesses and in total for the years ended December 31, 2004, 2003,2006, 2005 and 2002:2004:

      Twelve Months Ended December 31, 2004

       Specialty
       Personal
       Commercial
       Total(1)
       
       Dollars in millions

      Net written premiums $848.5 $724.7 $807.1 $2,459.1
      Earned insurance premiums $812.0 $723.8 $703.3 $2,378.5
        
       
       
       
      Twelve Months Ended December 31, 2003            
      Net written premiums $733.7 $676.8 $426.7 $1,972.5
      Earned insurance premiums $694.9 $744.7 $432.0 $2,160.3
        
       
       
       
      Twelve Months Ended December 31, 2002            
      Net written premiums $696.6 $845.2 $454.6 $2,522.8
      Earned insurance premiums $564.3 $871.3 $527.4 $2,870.9
        
       
       
       

      Millions

       

       

       

       

       

       

       

       

       

       

      Twelve Months Ended December 31, 2006

       

       

      Specialty

       

      Personal (1)

       

      Commercial

       

      Total (2)

       

      Net written premiums

       

      $

      437.6

       

      $

      800.6

       

      $

      718.3

       

      $

      1,957.6

       

      Earned insurance premiums

       

      $

      432.3

       

      $

      822.3

       

      $

      689.3

       

      $

      1,944.0

       

      Twelve Months Ended December 31, 2005

       

       

       

       

       

       

       

       

       

      Net written premiums

       

      $

      548.8

       

      $

      910.2

       

      $

      654.4

       

      $

      2,121.1

       

      Earned insurance premiums

       

      $

      521.9

       

      $

      933.7

       

      $

      654.7

       

      $

      2,118.4

       

      Twelve Months Ended December 31, 2004

       

       

       

       

       

       

       

       

       

      Net written premiums

       

      $

      565.7

       

      $

      1,063.3

       

      $

      826.8

       

      $

      2,459.1

       

      Earned insurance premiums

       

      $

      539.0

       

      $

      1,070.9

       

      $

      710.3

       

      $

      2,378.5

       


      (1)

        Includes results of consolidated reciprocals.

      (2)  Includes results from reciprocals (consolidated beginning April 1, 2004)runoff operations and run-off operations. Results from reciprocals are net of business assumed by OneBeacon, which is contained in Personal Lines.

      eliminations between underwriting units.


      NOTE 14. Investments in Unconsolidated Insurance Affiliates

      White Mountains'Mountains’ investments in unconsolidated insurance affiliates represent operating investments in other insurers in which White Mountains has a significant voting and economic interest but does not own more than 50.0% ofcontrol the entity. White Mountains' voting percentages and directorships in its unconsolidated affiliates do not provide White Mountains the ability to exercise significant influence over the operating and financial policies of its investees.



      Investment in Symetra

       

      Symetra

      On August 2, 2004, White Mountains invested $194.7 million in Symetra in exchange for 2.0 million common shares and 1.1 million warrants to purchase additional common shares of Symetra (See Note 2). As of December 31, 2004,2006, White Mountains owned 19% of the total of Symetra'sSymetra’s common shares outstanding and 24% of Symetra'sSymetra’s common shares on a fully-dilutedfully converted basis. White Mountains accounts for its investment in Symetra's common shares of Symetra using the equity method while itof accounting and accounts for its investment in Symetra'Symetra warrants as a derivative instrument,under SFAS 133, recording them at fair value and recognizing the changes in the fair value of the warrants through the income statement as a realized investment gain or loss.

      The following table summarizes amounts recorded by White Mountains relating to its investment in Symetra:

      Millions

       

       

      Common
      shares

       

      Warrants

       

      Total

       

      Initial value of investment in Symetra at closing, August 2, 2004

       

      $

      159.3

       

      $

      35.4

       

      $

      194.7

       

      Extraordinary gain - excess of fair value of acquired net assets over cost

       

      40.7

       

       

      40.7

       

      Equity in earnings of Symetra (1)

       

      10.2

       

       

      10.2

       

      Net unrealized gains from Symetra’s equity portfolio

       

      .9

       

       

      .9

       

      Increase in value of warrants

       

       

      1.9

       

      1.9

       

      Net unrealized gains from Symetra’s fixed maturity portfolio

       

      56.6

       

       

      56.6

       

      Carrying value of investment in Symetra as of December 31, 2004 (2)

       

      $

      267.7

       

      $

      37.3

       

      $

      305.0

       

      Equity in earnings of Symetra (1)

       

      28.0

       

       

      28.0

       

      Net unrealized gains from Symetra’s equity portfolio

       

      .6

       

       

      .6

       

      Increase in value of warrants

       

       

      10.5

       

      10.5

       

      Net unrealized gains (losses) from Symetra’s fixed maturity portfolio

       

      (32.4

      )

       

      (32.4

      )

      Carrying value of investment in Symetra as of December 31, 2005 (2)

       

      $

      263.9

       

      $

      47.8

       

      $

      311.7

       

      Equity in earnings of Symetra (1)

       

      26.6

       

       

      26.6

       

      Net unrealized gains from Symetra’s equity portfolio

       

      2.7

       

       

      2.7

       

      Dividends

       

      (15.6

      )

       

      (15.6

      )

      Increase in value of warrants

       

       

      6.2

       

      6.2

       

      Net unrealized gains (losses) from Symetra’s fixed maturity portfolio

       

      (28.3

      )

       

      (28.3

      )

      Carrying value of investment in Symetra as of December 31, 2006 (2)

       

      $

      249.3

       

      $

      54.0

       

      $

      303.3

       


      (1) Equity in earnings is net of tax of $0.

      (2) Includes equity in net unrealized gains (losses) from Symetra’s fixed maturity portfolio at December 31, 2006, 2005 and 2004 of $(4.1) million, $24.2 million and $56.6 million.


      During 2006, White Mountains received cash dividends from Symetra of $15.6 million on its common share investment which is accounted for as a reduction of White Mountains’ investment in Symetra in accordance with equity accounting. During 2006, White Mountains also received cash dividends from Symetra of $8.5 million on its investment in Symetra warrants that was recorded as net investment income.

      The following table summarizes financial information for Symetra as of December 31, 2006 and 2005:

      Millions

       

       

      2006

       

      2005

       

      Symetra balance sheet data:

       

       

       

       

       

      Total cash and investments

       

      $

      17,558.6

       

      $

      18,443.8

       

      Separate account assets

       

      1,233.9

       

      1,188.8

       

      Total assets

       

      20,115.3

       

      20,980.1

       

      Funds held under deposit contracts

       

      15,986.2

       

      16,697.9

       

      Long-term debt

       

      298.7

       

      300.0

       

      Separate account liabilities

       

      1,233.9

       

      1,188.8

       

      Total liabilities

       

      18,787.9

       

      19,575.2

       

      Common shareholders’ equity

       

      1,327.4

       

      1,404.9

       

      The following table summarizes financial information for Symetra for the years ended December 31, 2006, 2005 and 2004:

      Millions

       

       

      2006

       

      2005

       

      2004

       

      Symetra income statement data:

       

       

       

       

       

       

       

      Net premiums earned

       

      $

      525.7

       

      $

      575.5

       

      $

      263.2

       

      Net investment income

       

      983.5

       

      994.2

       

      411.5

       

      Total revenues

       

      1,564.4

       

      1,628.2

       

      702.2

       

      Policy benefits

       

      1,030.1

       

      1,138.4

       

      484.4

       

      Total expenses

       

      1,323.3

       

      1,436.7

       

      618.7

       

      Net income

       

      158.7

       

      145.5

       

      57.9

       

      Comprehensive net income (loss)

       

      22.5

       

      (30.9

      )

      269.3

       

      MSA

      On October 31, 2006, White Mountains’ investment in MSA was restructured. White Mountains received a $70 million cash dividend from MSA, following which White Mountains sold its 50% common stock investment in MSA to the MSA Group for (i) $70.0 million in 9.0% non-voting cumulative perpetual preferred stock of the MSA Group, and (ii) 4.9%, of the common stock of the MSA Group, which was recorded at an initial carrying value of $24.5 million. These transactions resulted in a net after tax realized gain of $8.5 million.

      Effective October 31, 2006, White Mountains accounts for its remaining investment in the MSA Group in accordance with FAS 115. Prior to the sale, White Mountains owned 50% of the total common shares outstanding of MSA and accounted for this investment using the equity method of accounting. The following table provides summary financial amounts recorded by White Mountains relating to its investment in Symetra:

       
       Common
      Shares

       Warrants
       Total
       
       Millions

      Initial value of investment in Symetra at closing, August 2, 2004 $159.3 $35.4 $194.7
      Extraordinary gain—excess of fair value of acquired net assets over cost  40.7    40.7
      Equity in earnings of Symetra(1)  10.2    10.2
      Equity in net unrealized gains from Symetra's equity portfolio  .9    .9
      Increase in value of warrants    1.9  1.9
      Equity in net unrealized gains from Symetra's fixed maturity portfolio  56.6    56.6
        
       
       
      Carrying value of investment in Symetra as of December 31, 2004 $267.7 $37.3 $305.0
        
       
       

      (1)
      Equity in earnings is net of tax of $0.

              The following table summarizes financial information for Symetra for the approximately five-month period ended December 31, 2004:

       
       Period ended
      December 31, 2004

       
       $ in millions

      Symetra balance sheet data:   
      Total cash and investments $19,430.0
      Separate account assets  1,228.4
      Total assets  22,130.1
      Funds held under deposit contracts  17,541.0
      Long-term debt  300.0
      Separate account liabilities  1,228.4
      Total liabilities  20,704.7
      Common shareholders' equity  1,425.4
      Symetra income statement data:   
      Net premiums earned $263.2
      Net investment income  410.9
      Policy benefits  485.3
      Net income  54.3
      Comprehensive net income  360.5
        

      Investment in MSA

              At December 31, 2004, 2003 and 2002, White Mountains owned 222,093 shares of the common stock of MSA. This represented 50% of the total shares of MSA common stock outstanding at those times. White Mountains' investment in MSA is accounted for usingunder the equity method. The following



      table provides summary financial amounts recorded by White Mountainsmethod relating to its investment in MSA common stock:

       
       2004
       2003
       2002
       
       
       $ in millions

       
      Amounts recorded by White Mountains:          
      Investment in MSA common stock $161.6 $142.8 $128.1 
      Equity in earnings (losses) from MSA common stock(1)(2)  16.4  12.3  (5.9)
      Equity in net unrealized investment gains from MSA's investment portfolio(3)  1.3  1.5  3.5 
        
       
       
       

      Millions

       

       

      2006

       

      2005

       

      2004

       

      Amounts recorded by White Mountains under the equity method:

      Investment in MSA common stock

       

      $

       

      $

      168.0

       

      $

      161.6

       

      Equity in earnings from MSA common stock (1)

       

      10.3

       

      5.6

       

      16.4

       

      Equity in net unrealized investment gains (losses) from MSA’s investment portfolio (2)

       

      .3

       

      (4.0

      )

      1.3

       


      (1)

      2002 recorded net of related amortization of goodwill.

      (2)
      Equity in earnings amounts are net of taxes of $1.2$5.6 million, $.9$3.0 million and $(3.2)$1.2 million for the ten months ended October 31, 2006 and the years ended December 31, 2005 and 2004, 2003 and 2002, respectively.

      (3)

      (2) Recorded directly to shareholders'shareholders’ equity (after-tax) as a component of other comprehensive income.

       The following table summarizes financial information for MSA for the years ended December 31, 2004, 2003 and 2002:

       
       Period ended December 31,
       
       
       2004
       2003
       2002
       
       
       $ in millions

       
      MSA balance sheet data:          
      Total cash and investments $677.6 $589.7 $510.7 
      Premiums receivable  116.5  109.3  93.1 
      Total assets  978.1  875.1  759.5 
      Unearned premium  288.3  264.7  223.9 
      Loss and lae reserves  325.6  281.3  253.5 
      Total liabilities  654.8  584.7  505.7 
      Common shareholders' equity  323.3  290.4  253.8 
      MSA income statement data:          
      Net premiums written $454.5 $427.6 $357.3 
      Net premiums earned  435.6  396.0  334.1 
      Net investment income  26.4  23.3  22.9 
      Loss and lae  298.8  263.8  241.9 
      Net income  29.6  29.3  (13.2)
      Comprehensive net income  32.1  36.6  (8.5)
        
       
       
       

      At December 31, 2005 and 2004, and 2003, White Mountains'Mountains’ consolidated retained earnings included $51.0 million, $33.4$59.7 million and $20.2$51.0 million respectively, of accumulated undistributed earnings of MSA. No dividends were declared or paid by MSA during 2004, 20032005 and 2002.2004.


      Investment in MontpelierDelos

       

      On August 3, 2006, White Mountains Re sold its wholly-owned subsidiary, Sirius America, to an investor group led by Lightyear Capital for $138.8 million in cash (See Note 2). As part of the transaction, White Mountains acquired an equity interest of approximately 18% in the acquiring entity, Delos. White Mountains accounts for its investment in Delos under the equity method. For the year ended December 31, 2004,2006, White Mountains'Mountains recorded $.2 million of equity in earnings from its investment in Delos. White Mountains’ investment in Delos at December 31, 2006 totalled $32.2 million.

      Montpelier consisted of 6.3 million common shares and warrants to acquire 7.2 million common shares at $16.67 per share that are exercisable until December 6, 2011. Through its holdings of common shares and warrants, White Mountains owns approximately 17% of Montpelier on a fully-converted basis.Re

       

      During the first quarter of 2004, White Mountains sold a portion of its investment in Montpelier Re common shares to third parties. As a result of this sale, as well as changes to the composition of the



      Board of Directors of both Montpelier Re and White Mountains, White Mountains changed the method of accounting for its remaining common share investment in Montpelier Re as of March 31, 2004 from an equity method investment in an unconsolidated affiliate to a common equity security classified as available for sale and carried at fair value. White Mountains accounts for its warrants in Montpelier Re as derivative instruments and recognizes changes in the fair value of the warrants during a given period in its income statement as a realized gain or loss. (See Note 5 for details of White Mountains'Mountains’ investment in Montpelier Re as of December 31, 2004)2005).

       

      White Mountains'Mountains’ equity in earnings of Montpelier Re was $10.8 million $45.1 million and $19.9 million (net of tax of $6.1 million $24.4 million and $10.7 million)tax) for the yearsyear ended 2004, 2003 and 2002, respectively.December 31, 2004.


      NoteNOTE 15. Variable Interest Entities

      New Jersey Skylands

              As part of a restructuring of its New Jersey personal lines, OneBeacon formed New Jersey Skylands Management LLC andReciprocals

      Reciprocals are not-for-profit, policyholder owned insurance carriers organized as unincorporated associations. Each policyholder insured by the New Jersey Insurance Department approved the formation of New Jersey Skylands Insurance Association and its wholly owned subsidiary New Jersey Skylands Insurance Company (together, the "Association") during the third quarter of 2002. New Jersey Skylands Insurance Association (the "NJ Skylands Reciprocal"), is a not-for-profit, policyholder-owned reciprocal insurance carrier. A reciprocal is an unincorporated association with each insured sharingshares risk with the others in the association. Thus, each participant in this pool is both an insurer and an insured.other policyholders. Policyholders share profits and losses in the same proportion as the amount of insurance purchased by that member. However, policyholders in the reciprocalbut are not subject to assessmentadditional assessments for losses of the reciprocal.

       An attorney-in-fact administers the reciprocal. Such administration entails paying losses, investing premium inflow, recruiting new members, underwriting new and renewal business, receiving premiums and exchanging reinsurance contracts. New Jersey Skylands Management LLC is the attorney-in-fact

      OneBeacon has capitalized three reciprocals by loaning money to them in exchange for all the business affairs of the NJ Skylands Reciprocal. Accordingly, New Jersey Skylands Insurance Company, the stock insurance company, has a management agreement with New Jersey Skylands Management LLC to manage its business affairs.

              The NJ Skylands Reciprocal was capitalized by OneBeacon with a $31.3 million surplus note.notes. Principal and interest on the surplus notenotes are repayable to OneBeacon only with regulatory approval. As defined in the surplus note agreement, the NJ Skylands Reciprocal'sThe obligation to payrepay principal underon the surplus note agreementnotes is subordinated to all other liabilities andincluding obligations to policyholders toand claimants for benefits under contracts of insurance it issued, to all other classes of creditors other than surplus note holders, and to the State of New Jersey and any governmental or quasi-governmental entity. The Association began writing personal automobile coverage for new customers in August 2002.policies.

       

      OneBeacon has no ownership interest in the Association. As a result of its adoptionthree reciprocals. However, under the provisions of FIN 46, White Mountains' future economic income derived from46(R), OneBeacon has determined that each of the New Jersey automobile insurance market will differ from the operating resultsreciprocals qualify as a VIE. Further, OneBeacon has determined that it will record on a consolidated GAAP basis. On an economic basis,is the primary beneficiary and is required to consolidate all three reciprocals.

      In 2002, OneBeacon will realize income from management and service fees charged byformed New Jersey Skylands Management LLC to provide management services for a fee to New Jersey Skylands Insurance Association, a reciprocal, and its wholly owned subsidiary New Jersey Skylands Insurance Company (together, “New Jersey Skylands Insurance”). New Jersey Skylands Insurance was capitalized with a $31.3 million surplus note issued to OneBeacon in 2002. At December 31, 2006 and 2005, consolidated amounts related to New Jersey Skylands Insurance included total assets of $89.2 million and $105.6 million and total liabilities of $113.7 million and $119.6 million. At December 31, 2006, the Association and interest onnet amount of capital at risk is equal to the surplus note. On a consolidated GAAP basis, White Mountains will recognize profits from the insurance operationsnote of the Association until such time that the Association's equity is greater than zero or until$31.3 million less the accumulated losses into date of $24.5 million.

      In 2004, OneBeacon formed Houston General Management Company to provide management services for a fee to another reciprocal, Houston General Insurance Exchange. During 2004, OneBeacon contributed $2.0 million of capital to Houston General Insurance Exchange. In 2005, OneBeacon contributed one of its subsidiaries, Houston General Insurance Company, with assets of $149.4 million and liabilities of $127.6 million, to Houston General Insurance Exchange (together “Houston General Insurance”). Subsequent to the Association exceed OneBeacon's initialcontribution of Houston General Insurance Company, Houston General Insurance Exchange issued a surplus note investment. of $23.7 million to OneBeacon. At December 31, 2006 and 2005, consolidated amounts related to Houston General Insurance included total assets of $167.2 million and $187.3 million and total liabilities of $148.8 million and $165.3 million. At December 31, 2006 the net amount of capital at risk is equal to the surplus note of $23.7 million.


      In 2006, Adirondack AIF, LLC, a wholly owned subsidiary of OneBeacon, entered into an agreement to provide management services for a fee to Adirondack Insurance Exchange (“Adirondack Insurance”), a reciprocal. Adirondack Insurance was capitalized with a $70.7 million surplus note issued to OneBeacon in May 2006. At December 31, 2006, consolidated amounts related to Adirondack Insurance included total assets of $124.8 million and total liabilities of $130.3 million. At December 31, 2006, the net amount of capital at risk is equal to the surplus note of $70.7 million less the accumulated losses to date of $5.5 million.

      Prospector Offshore Fund

      White Mountains has determined that the Association qualifies asProspector Offshore Fund, Ltd. (“the Prospector Fund”) is a VIE underfor which White Mountains is the provisions of FIN 46. Upon adoption of FIN 46 on Marchprimary beneficiary and is required to consolidate the Prospector Fund. At December 31, 2004,2006 and 2005, White Mountains consolidated the Association, which had total assets of $211.1 million and $177.3 million and total liabilities with a carrying value of $138.5$70.0 million and $111.6$38.8 million respectively. The resulting $26.9 million difference between the carrying values of the total assetsProspector Fund. In addition, at December 31, 2006 and liabilities2005, White Mountains recorded a minority interest liability of $82.4 million and $83.5 million representing the Association wasnoncontrolling interests in the Prospector Fund. For the years ended December 31, 2006 and 2005, White Mountains recorded $5.6 million and $4.2 million of minority interest expense related to the Fund. At December 31, 2006, the net amount of capital at risk is equal to the March 31, 2004 carrying value of the surplus noteWhite Mountains’ investment at OneBeacon. Therefore, the adoption of FIN 46 did not have an effect on the Company's financial condition. The Company's exposure to the New Jersey auto market remains limited to the surplus notes invested in the reciprocal.


      Fund of $58.7 million, which represents White Mountains’ ownership interest of 41.6% in the Prospector Fund.


      Tuckerman LP,
      Prospector Offshore Fund
      I

       

      White Mountains has determined that oneTuckerman Limited Partnership, I (“Tuckerman I”) is a VIE for which White Mountains is the primary beneficiary and is required to consolidate Tuckerman I. At December 31, 2006 and 2005, White Mountains consolidated total assets of its ownership$35.6 million and $38.5 million and total liabilities of $15.1 million and $12.6 million of Tuckerman I. In addition, at December 31, 2006 and 2005, White Mountains recorded a minority interest liability of $3.5 million and $2.4 million representing the noncontrolling interests in a limited partnership, Prospector Offshore Fund, Ltd. ("Tuckerman I. For the Fund"), qualifies as a VIE underyears ended December 31, 2006 and 2005, White Mountains recorded $1.9 million and $1.3 million of minority interest expense related to Tuckerman I. At December 31, 2006, the provisionsnet amount of FIN 46. The Company's economic exposure to the Fundcapital at risk is equal to $51.1White Mountains’ investment in Tuckerman I of $17.0 million, which represents White Mountains’ ownership interest of 95.9% in Tuckerman I.

      Tuckerman LP, II

      White Mountains has determined that Tuckerman Limited Partnership, II (“Tuckerman II”) is a VIE for which White Mountains is the Company's 49.3%primary beneficiary and is required to consolidate Tuckerman II. At December 31, 2006 and 2005, White Mountains consolidated total assets of $65.4 million and $25.2 million and total liabilities of $17.4 million and $4.8 million. In addition, at December 31, 2006 and 2005, White Mountains recorded a minority interest liability of $26.7 million and $10.4 million representing the noncontrolling interest in Tuckerman II. For the years ended December 31, 2006 and 2005, White Mountains recorded $3.6 million and $6.7 million of minority interest expense related to Tuckerman II. At December 31, 2006, the net amount of capital at risk is equal to White Mountains’ investment in Tuckerman II of $21.3 million, which represents White Mountains’ ownership interest of 49.6% in the Fund's total equity. Any creditor of the Fund would not have recourse against the Company beyond the Company's investment.Tuckerman II.


      NOTE 16. Fair Value of Financial Instruments

       

      SFAS No. 107, "Disclosure“Disclosure about Fair Value of Financial Instruments" ("Instruments” (“SFAS 107"107”), requires disclosure of fair value information of financial instruments. For certain financial instruments where quoted market prices are not available, other independent valuation techniques and assumptions are used.the fair values of these financial instruments were estimated by discounting future cash flows using current market rates for similar obligations or using quoted market prices. Because considerable judgment is used, these estimates are not necessarily indicative of amounts that could be realized in a current market exchange. SFAS 107 excludes certain financial instruments from disclosure, including insurance contracts, other than financial guarantees and investment contracts. White Mountains carries its financial instruments on its balance sheet at fair value with the exception of its fixed-rate, long-term indebtedness.indebtedness and its mandatorily redeemable preferred stock.


      At December 31, 20042006 and 2003, the2005, White Mountains’ fixed-rate, long-term indebtedness consisted of its Senior Notes. The fair value of White Mountains'Mountains’ Senior Notes (its only fixed-rate, long-term indebtedness) was $714.0$692.7 million and $710.6$705.4 million, respectively, which compared to a carrying value of $698.3$698.7 million and $698.1$698.5 million, respectively.

       

      At December 31, 2004,2006, the fair values of the Berkshire Preferred Stock and the Zenith Preferred Stock were $340.5$319.5 million and $22.7$20.6 million, respectively, which compared to carrying values of $191.9$242.3 million and $20.0 million, respectively. At December 31, 2005, the fair values of the Berkshire Preferred Stock and the Zenith Preferred Stock were $331.5 million and $21.6 million, respectively, which compared to carrying values of $214.0 million and $20.0 million, respectively.

       The fair values of these obligations were estimated by discounting future cash flows using current market rates for similar obligations or using quoted market prices. Considerable judgment is required to develop such estimates of fair value. Therefore, the estimate provided herein is not necessarily indicative

      NOTE 17. Transactions with Related Persons

      Prospector

      Mr. John Gillespie, a director of the amounts that could be realized inCompany, is the founder and Managing Member of Prospector. Prospector serves as a current market exchange.


      NOTE 17. Related Party Disclosures

      Berkshire

              Berkshire owned approximately 16% of the Common Sharesdiscretionary adviser with respect to specified assets, primarily equity securities, managed by WM Advisors on behalf of White Mountains as(including, prior to its IPO, OneBeacon) and other clients of WM Advisors, including the defined benefit and defined contribution plans of OneBeacon. Pursuant to an investment management agreement with WM Advisors (the “WMA Agreement”), through March 1, 2006, Prospector charged WM Advisors fees based on the following schedule: 100 basis points on the first $200 million of assets under management; 50 basis points on the next $200 million; and 15 basis points on amounts over $400 million. Effective March 1, 2006, pursuant to an amendment to the WMA Agreement, Prospector charged WM Advisors fees based on the following schedule: 100 basis points on the first $200 million; 50 basis points on the next $200 million; and 25 basis points on amounts over $400 million. At December 31, 2004. Berkshire acquired the Common Shares through its June 2004 exercise2006, Prospector managed approximately $1.2 billion of warrants to purchase 1,724,200 Common Sharesassets for $294 million. Berkshire bought the warrantsWM Advisors under this arrangement.

      Effective November 14, 2006, in connection with the financingOneBeacon Offering, OneBeacon entered into a separate investment management agreement with Prospector pursuant to which Prospector supervises and directs specified assets, primarily equity securities. Pursuant to this investment management agreement (the “OneBeacon Agreement”), Prospector charged OneBeacon fees based on the following schedule: 100 basis points on the first $200 million; 50 basis points on the next $200 million; and 25 basis points on amounts over $400 million. At December 31, 2006, Prospector managed approximately $1.1 billion of White Mountains' acquisition ofassets for OneBeacon in 2001. The warrants were exercisable at any time until May 2008 and callable by the Company on or after May 31, 2005. Berkshire and the Company agreed to reduce the exercise price by approximately 2% ($6 million) to induce Berkshire's early exercise of the warrants.under this arrangement.

       In November 2004,

      During 2006, Prospector earned $9.0 million in fees pursuant to the WMA Agreement and $.5 million in fees pursuant to the OneBeacon Agreement.

      Prospector also advises White Mountains completedon matters including capital management, asset allocation, private equity investments and mergers and acquisitions. Pursuant to a significant corporate reorganization that madeConsulting Agreement for those services, Prospector was granted 8,000 performance shares for the legal organization of White Mountains' subsidiaries consistent2007-2009 performance cycle, 8,400 performance shares for the 2006-2008 performance cycle and 7,000 performance shares for the 2005-2007 performance cycle. In accordance with its main operating businesses. In order to effect the reorganization, White Mountains and Fund American entered into or amended certain agreements with respect to the Series A Preferred Stock of Fund American (the "Series A Preferred Stock"), which is owned by subsidiaries of Berkshire. Under the terms of the Incentive Plan, performance against target governing the performance shares will be confirmed by the Compensation Committee of the Board following the end of each performance cycle and the number of performance shares actually awarded at that time will range from 0% to 200% of the target number granted. Unless and until the Consulting Agreement has been terminated, and subject to the approval of the Compensation Committee, at the beginning of each performance cycle Prospector is to be granted performance shares with a Keep-Well Agreement dated November 30, 2004 between White Mountains and Fund American (the "Keep-Well"), White Mountainsvalue of approximately $4.5 million. The Compensation Committee establishes the performance target for such performance shares.

      Pursuant to a revenue sharing agreement, Prospector has agreed to return to Fund American up to approximately $1.1 billion, which equals the amount of net assets transferred out of Fund American as a resultpay White Mountains 6% of the reorganization, if some or allrevenues in excess of that amount is required by Fund American to meet its obligations to Berkshire under the Series A Preferred Stock. Additionally, the Keep-Well limits the aggregate amount$500,000 of distributions thatcertain of Prospector’s funds in return for White Mountains may make to its shareholders to approximately $1.3 billion plus



      White Mountains' aggregate consolidated net income after September 30, 2004. The Keep-Well will expire when all obligations of the Series A Preferred Stock, which is redeemablehaving made a founding investment in May 2008, have been satisfied, or when approximately $1.1 billion has been returned to Fund American.

              NICO and GRC, which have provided the NICO Cover and the GRC Cover to subsidiaries of White Mountains, are wholly-owned subsidiaries of Berkshire (see Note 4). Reinsurance recoverable from, and preferred stock of White Mountains' subsidiaries owned by, Berkshire are shown as separate line items in White Mountains' consolidated balance sheet. In addition, in the ordinary course of its business, White Mountains has, and in the future may, enter into other insurance and reinsurance transactions with Berkshire on arm's length terms and conditions.

              White Mountains and Berkshire co-led the investor group that acquired Symetra for $1.35 billion on August 2, 2004. See "Symetra" below.


      Olympus

              Folksamerica and Sirius have entered into quota share retrocessional arrangements with Olympus. Under these arrangements with Olympus, Folksamerica ceded up to 75% of substantially all of its short-tailed excess of loss business, mainly property and marine, and 50% of its proportional property business to Olympus and received an override commission on the premiums ceded to Olympus. Effective April 1, 2004, Sirius International entered into a quota share reinsurance agreement with Olympus. Under this agreement, Sirius International ceded 25% of its new and renewal short-tailed proportional and excess of loss business to Olympus. During 2004, 2003 and 2002, White Mountains ceded $465.6 million, $449.1 million and $229.7 million, respectively, in written premiums and $269.5 million, $107.0 million and $54.4 million, respectively, in losses and LAE to Olympus. White Mountains receives fee income on reinsurance placements referred to Olympus and is entitled to additional fees based on net underwriting profits on referred business. During 2004, 2003 and 2002,1997. White Mountains earned $68.7$.7 million $98.4 million and $48.9 million of fee income from Olympus.during 2006 under this arrangement.

      At December 31, 2006, White Mountains does not own or control any common shareshad $133.1 million invested in limited partnership investment interests managed by Prospector. In addition, Messrs. Barrette, George Gillespie and John Gillespie, each directors of Olympus Holdings.the Company, owned limited partnership investment interests managed by Prospector as of such date.

       Joseph Steinberg,

      FSA

      In May 2006, White Mountains was required to sell its 1% economic interest in Financial Security Assurance Holdings Ltd. (“FSA”) back to FSA’s parent, Dexia S.A., at its fair value of $56.6 million. Mr. Robert Cochran, a director of the Company, is Chairman and CEO of Olympus Holdings (the parent company of Olympus) and is President of Leucadia. Leucadia owns approximately 19% of the common shares of Olympus Holdings. Investment funds managed by Franklin Mutual Advisors LLC ("Franklin Mutual"), which own approximately 19% of the common shares of White Mountains, own approximately 13% of Olympus Holdings. Bruce Berkowitz, a director of the Company, is Founder and Managing Member of Fairholme Capital Management, L.L.C., a registered investment adviser. Through Fairholme Capital Management, Mr. Berkowitz controls approximately 11% of the common shares of Olympus Holdings. John Gillespie, a director and executive officer of the Company, through investment management arrangements including Prospector, controls approximately .1% of the common shares of Olympus Holdings. In addition, other directors and executive officers of White Mountains (consisting of Jack Byrne, John Cavoores, Steven Fass and Arthur Zankel) own approximately 3% of the common shares of Olympus Holdings.


      Symetra

              As of December 31, 2004, through its holdings of common shares and warrants, White Mountains owned approximately 24% of Symetra on a fully-converted basis. Berkshire, who co-led the investor group that acquired Symetra, also owns approximately 24% of Symetra on a fully-converted basis. White Mountains is entitled to appoint three persons to Symetra's eight member board of directors (currently Jack Byrne, John Gillespie and David Foy). In addition, Mr. Foy serves as Chairman of Symetra.

              In connection with the acquisition of Symetra, the following entities were among the investors in the investor group that was co-led by White Mountains and Berkshire Hathaway. Investment fundsFSA.



      managed by Franklin Mutual own approximately 10% of common shares of Symetra on a fully converted basis. Bruce Berkowitz, through Fairholme Capital Management controls approximately 2% of the common shares of Symetra on a fully converted basis. John Gillespie, through investment management arrangements including Prospector, controls approximately 3% of the common shares of Symetra on a fully converted basis.


      Other relationships
      and transactions

      Mr. Howard Clark, a director of the Company, is Vice Chairman of Lehman.Lehman Brothers, Inc. (“Lehman”). Lehman has, from time to time, provided various services to White Mountains including investment banking services, brokerage services, underwriting of debt and equity securities and financial consulting services. During 2006, Lehman wasserved as sole book-running manager for the lead underwriter of Fund American's $700.0 million Senior Notes.OneBeacon Offering. Also during 2006, Lehman was also the arranger, the administrative agent andserved as a lender under the Old Bank Facility and is a lender underjoint book-running manager for two new revolving credit facilities for White Mountains' current Bank Facility. See Note 6.Mountains.

      Mr. George Gillespie, a director and Chairman of the Company, is a Partner atserves as Special Counsel to Cravath, Swaine & Moore LLP ("(“CS&M"&M”), which. CS&M has been retained by White Mountains from time to time to perform legal services.

              John Gillespie, pursuant to his employment agreement entered into with the Company During 2006, among other services rendered, CS&M acted as of January 1, 2001, may continue his active involvement with Prospector so long as he devotes the requisite time required to fulfill his responsibilities to WM Advisors. The agreement specifies procedures pursuant to which Prospector's funds have the ability to invest first in opportunities generated by Mr. Gillespie that are appropriate for both White Mountains and such funds. In addition, pursuant to a revenue sharing agreement established in connection with his employment by the Company, Mr. Gillespie has agreed to pay White Mountains 33% of certain revenues of Prospector in return for White Mountains agreeing to pay its operational expenses. For 2004, White Mountains' received total revenues of approximately $4.2 million and paid total expenses of approximately $2.8 million under the revenue sharing agreement. Pursuant to another revenue sharing agreement with Prospector, Mr. Gillespie has agreed to pay White Mountains 6% of the revenues in excess of $500,000 of certain of Prospector's funds in return for White Mountains having made a founding investment in Prospector in 1997. For 2004, White Mountains' received a payment of approximately $.8 million under the second revenue sharing agreement. Mr. Gillespie's share of Prospector's revenues for 2004 was approximately $4.2 million. Mr. Gillespie's employment contract and the revenue sharing arrangements are filed as exhibits to this Form 10-K.

              At December 31, 2004, White Mountains had approximately $115.9 million invested in funds managed by Prospector. In addition, Messrs. Byrne, George Gillespie and John Gillespie owned investments in funds managed by Prospector as of such date.

              In September 2001, White Mountains Advisors entered into a five-year lease at a market-based rate for a building partially owned by John Gillespie and trustsMountains’ counsel for the benefit of members of his family (the "Gillespie Trusts"). For 2004, the rental payments attributable to John Gillespie's ownership in the building totalled approximately $16,000 and the rental payments attributable to the Gillespie Trusts' ownership in the building totalled approximately $127,000.OneBeacon Offering.

      Mr. John Gillespie indirectly through general and limited partnership interests holds a 44% interest in Dowling & Partners Connecticut Fund III, LP ("Fund III").III. Two of the Company’s indirect subsidiaries, OBPP and Folksamerica Specialty Underwriting, Inc. ("FSUI") haveFSUI, had previously borrowed approximately $8 million and $7 million, respectively, from Fund III in connection with an incentive program sponsored by the State of Connecticut known as the Connecticut Insurance Reinvestment Act (the "CIR Act").CIR Act. The CIR Act provides for Connecticut income tax credits to be granted for qualifying investments made by approved fund managers. Both loans were repaid in full during 2006. The loans made by Fund III to OBPP and FSUI arewere qualifying investments and, together, have the potential to generate up to $15 million ofwhich generated tax credits that wouldto be shared equally between Fund III on the one



      hand and OBPP and FSUI on the other. As a result of his interest in Fund III, during 2006 Mr. Gillespie generated approximately $.3 million in such tax credits.

      WM Advisors currently leases a building partially owned by Mr. John Gillespie could realize upand trusts for the benefit of members of his family (the “Gillespie Trusts”). For 2006, the rental payments attributable to $3.3 millionMr. Gillespie’s ownership in the building totalled approximately $26,000 and the rental payments attributable to the Gillespie Trusts’ ownership in the building totalled approximately $208,000. In addition, WM Advisors currently sublets a portion of the building it leases from the tax credits, although any such amount would be subjectGillespie Trusts to the revenue sharing agreements with White Mountains described above.

              Arthur Zankel, a director of the Company, is Senior Managing Member of High Rise CapitalProspector and, for 2006, Prospector paid WM Advisors LLC, which is the General Partner of High Rise Partners II, L.P. and Cedar Bridge Realty Fund, L.P. At December 31, 2004, White Mountains had a total of approximately $80.8 million in investments that were managed by these entities.$102,000.

              In connection with acquisitions or other transactions led or sponsored by the Company in which it obtains equity financing, entities affiliated with directors from time to time may participate in such financings on the same terms as unaffililated third parties that participate in such financings.


      NOTE 18. Commitments and Contingencies

      White Mountains leases certain office space under noncancellable operating leases expiring atthat expire on various dates through 2010. Rental expense for all of White Mountains'Mountains’ locations was approximately $46.5$49.1 million, $42.9$49.1 million and $45.9$46.5 million for the years ended December 31, 2004, 20032006, 2005 and 2002, respectively.2004. White Mountains also has various other lease obligations whichthat are immaterial in the aggregate.

       

      White Mountains'Mountains’ future annual minimum rental payments required under noncancellable leases, which are primarily for office space, are $41.8$43.1 million, $37.7$37.5 million, $34.1$21.4 million, $26.3$13.7 million and $28.6$33.0 million for 2005, 2006, 2007, 2008, 2009, 2010 and 20092011 and thereafter, respectively.

      Assigned Risks

       

      As a condition of its license to do business in certain states, White Mountains'Mountains’ insurance operations are required to participate in mandatory shared market mechanisms. Each state dictates the types of insurance and the level of coverage that must be provided. The total amount of such business an insurer is required to accept is based on its market share of voluntary business in the state. In certain cases, White Mountains is obligated to write business from mandatory shared market mechanisms at some time in the future based on the market share of voluntary policies it is currently writing. Underwriting results related to assigned risk plans are typically adverse and are not subject to the predictability associated with White Mountains'Mountains’ voluntarily written business.

       

      Under existing guaranty fund laws in all states, insurers licensed to do business in those states can be assessed for certain obligations of insolvent insurance companies to policyholders and claimants. In accordance with SOP 97-3, White Mountains' insurance subsidiaries record guaranty fund assessments when such assessments are billed by the respective guaranty funds. In addition, each insurance subsidiary's policy is to accrue forMountains accrues any significant insolvencies when the loss is probable and the assessment amount can be reasonably estimated. The actual amount of such assessments will depend upon the final outcome of rehabilitation proceedings and will be paid over several years. At December 31, 2004,2006, the reserve for such assessments at White Mountains' insurance subsidiaries totalled $18.3$17.3 million.

      General LitigationLegal Contingencies

       

      White Mountains, and the insurance and reinsurance industry in general, are subject to litigation and arbitration in the normal course of its business. Other than those items listed below, White Mountains was not a party to any material litigation or arbitration other than as routinely encountered in claims activity, none of which is expected by management to have a material adverse effect on its financial condition and/or cash flows asflows.


      On November 1, 2001, OneBeacon transferred its regional agency business, agents and operations in 42 states and the District of Columbia to Liberty Mutual Insurance Group (“Liberty Mutual”) pursuant to a renewal rights agreement (the “Liberty Agreement”), which expired on October 31, 2003. OneBeacon is in a dispute with Liberty Mutual over certain costs Liberty Mutual claims it incurred in connection with the Liberty Agreement. Liberty Mutual asserts that these costs are part of unallocated loss adjustment expenses (“ULAE”) due Liberty Mutual under the Liberty Agreement. Liberty Mutual further asserts that ULAE on charges previously billed to and settled by OneBeacon since the inception of the Liberty Agreement should be retroactively recast in addition to changing the calculation of ULAE charges for the period not yet settled. OneBeacon believes that the recast charges, which are significantly higher than prior ULAE calculations, and the calculation of ULAE charges for the period not yet settled are inconsistent with the terms of the Liberty Agreement and with standard industry definitions of ULAE. The amount of additional ULAE Liberty Mutual claims that it incurred under the Liberty Agreement totals approximately $68.4 million. Liberty Mutual has netted amounts billed under the ULAE dispute against amounts otherwise payable to OneBeacon. As of December 31, 2004.



              On May 15, 2002, The Robert Plan Corporation and several of its subsidiaries filed a lawsuit against the Company, certain of its subsidiaries and several individuals employed by such subsidiaries. The suit alleges that the defendants misappropriated confidential information of the plaintiffs and used such information to enter into the New York automobile assigned risk business in direct competition with the plaintiffs. The plaintiffs seek approximately $185 million in damages which they allege represents two years of their lost profits in the subject business. The Company, its named subsidiaries and its named employees do not believe they engaged in any improper or actionable conduct. White Mountains and its subsidiaries have no reason to believe they have any liability to The Robert Plan Corporation and intend to vigorously defend the lawsuit. In addition,2006, OneBeacon has broughtrecorded in its loss and LAE reserves an estimate of ULAE expenses due Liberty Mutual on a counterclaim against the plaintiffsbasis that it believes to be meritorious. OneBeacon is seeking compensatory damages of $8.8 million as a resultconsistent with the terms of the breach by Liberty Agreement and with standard industry definitions of ULAE. In January 2006, Liberty Mutual initiated an arbitration proceeding against OneBeacon with respect to this dispute (“the plaintiffsULAE Arbitration”). The initial organizational meeting on the ULAE Arbitration was held in February 2007 and the final hearing is scheduled for April 2008.

      In September 2006, OneBeacon initiated an arbitration against Liberty Mutual (and Peerless Insurance Company) seeking payment of approximately $57 million relating to reinsurance premiums, ceding commissions, recoveries and commutations due to OneBeacon from Liberty Mutual pursuant to the terms and conditions of the LAD servicing contract that OneBeacon had entered into with them.

              In December 2001, American Centennial filed for arbitration against Gerling, a reinsurer of American Centennial, based on Gerling's failurerewritten indemnity reinsurance agreement. To date, Liberty Mutual has refused to pay, American Centennialasserting that it is entitled to an offset against the ULAE amounts due under a reinsurance contract. Gerling had requesteddisputed by OneBeacon and subject to the ULAE Arbitration. The parties are in the process of selecting an arbitration panel and the dates for the arbitration panel to rescindhearing have not yet been scheduled. In January 2007, this arbitration was consolidated into the contract asULAE arbitration.

      OneBeacon Insurance Group LLC and OBIC also have asserted claims against Liberty Mutual (and Peerless Insurance Company) in the Court of December 31, 2000 based upon, among other things, White Mountains' acquisition of American Centennial in 1999. A preliminary judgement was handed down in December 2003Common Pleas for Philadelphia County, Pennsylvania, or the Court, in which they assert that Liberty Mutual (and Peerless Insurance Company) breached the arbitrator ruled that Gerling had been harmedPre-Closing Administrative Services Agreement, handled claims files negligently, breached fiduciary duties and they are entitled to a discount on certain amounts that it owes American Centennial underwere unjustly enriched. The Court has stayed those claims pending the resolution of the arbitration between OBIC and Liberty Mutual for breach of contract. The impactarbitration hearing commenced in November 2006 and will continue in May 2007.

      OneBeacon believes that its loss and LAE reserves are sufficient to cover reasonably anticipated outcomes of this discount is immaterial to White Mountains' financial results. A final judgement handed down in January 2004 confirmed that the reinsurance contract will remain in-force. At December 31, 2003, American Centennial had recorded $22.7 million in recoverables from Gerling under this reinsurance contract, of which $9.8 million was for losses paid by American Centennial. Gerling has subsequently reimbursed American Centennial early in 2004 for the $9.8 million in paid recoverables. The remaining obligation on unpaid recoverables is fully collateralized.

              In August 2000, Aramarine, a former insurance broker of OneBeacon's, filed a lawsuit alleging that OneBeacon had wrongfully terminated its business relationshipall related disputes with Aramarine. The suit originally claimed $410 million in compensatory damages for lost commissions. However, Aramarine has recently reduced its demand to $158 million. OneBeacon does not believe it has engaged in any actionable conduct. During 2004, OneBeacon prevailed on a motion for summary judgment to dismiss the plaintiff's claim. OneBeacon expects the plaintiff to appeal the summary judgment upon resolution of OneBeacon's counterclaim for return commission.

              In June 1999, White Mountains sold VGI to Unitrin. As part of the VGI Sale, White Mountains has provided Unitrin with adverse loss development protection of up to $50.0 million on loss reserves sold to Unitrin. During 2004, White Mountains paid Unitrin $47 million for a full release of its obligation in this matter.


      NOTE 19. Consolidating Financial Information

              The Company will fully and unconditionally guarantee any debt securities, preference shares or trust preferred securities issued by Fund American pursuant to its December 2001 shelf registration statement, including Fund American's May 2003 issuance of the Senior Notes (see Note 6). The following tables present White Mountains' consolidating balance sheets as of December 31, 2004 and December 31, 2003 and statements of income and cash flows for the years then ended. These financial statements reflect the Company's financial position, results of operations and cash flows on a stand-alone basis, that of Fund American and of the Company's other entities, as well as the necessary adjustments to eliminate intercompany balances and transactions.Liberty Mutual.


      Consolidating Balance Sheet as of December 31, 2004

       The Company
       Other Entities
       Fund American
       Eliminations
       Total
       
       (Dollars in Millions)

      ASSETS               
      Fixed maturity investments, at fair value $246.8 $3,457.6 $4,195.6 $ $7,900.0
      Short-term investments, at amortized cost  16.2  632.9  409.1    1,058.2
      Common equity securities, at fair value    327.7  716.2    1,043.9
      Other investments    367.0  160.4    527.4
        
       
       
       
       
       Total investments  263.0  4,785.2  5,481.3    10,529.5
      Cash    195.8  47.3    243.1
      Reinsurance recoverable on paid and unpaid losses    1,388.9  2,500.5    3,889.4
      Funds held by ceding companies    943.8      943.8
      Securities lending collateral     308.4  284.9    593.3
      Accounts receivable on unsettled investment sales    0.2  19.7    19.9
      Insurance and reinsurance premiums receivable    392.0  550.2    942.2
      Investment in unconsolidated insurance affiliates  37.3  267.6  161.7    466.6
      Deferred tax asset    92.4  179.1    271.5
      Deferred acquisition costs    108.0  200.2    308.2
      Ceded unearned premiums    182.5  41.6    224.1
      Investment income accrued  1.6  41.3  59.5    102.4
      Investments in subsidiaries  3,665.1      (3,665.1) 
      Other assets  12.3  87.7  381.1    481.1
        
       
       
       
       
       Total assets $3,979.3 $8,793.8 $9,907.1 $(3,665.1)$19,015.1
        
       
       
       
       
      LIABILITIES AND COMMON SHAREHOLDERS' EQUITY               
      Loss and LAE reserves $ $4,277.8 $5,120.7 $ $9,398.5
      Reserves for structured contracts    375.9      375.9
      Unearned insurance and reinsurance premiums    672.6  1,066.8    1,739.4
      Securities lending liability    308.4  284.9    593.3
      Debt    57.0  726.3    783.3
      Deferred tax liability    316.3      316.3
      Ceded reinsurance payable    121.4  80.0    201.4
      Accounts payable on unsettled investment purchases    11.8  19.1    30.9
      Funds held under reinsurance treaties    149.3  6.1    155.4
      Other liabilities  95.4  409.8  819.7    1,324.9
      Preferred stock subject to mandatory redemption    19.9  192.0    211.9
        
       
       
       
       
       Total liabilities  95.4  6,720.2  8,315.6    15,131.2
        
       
       
       
       
      Common shareholders' equity  3,883.9  2,073.6  1,591.5  (3,665.1) 3,883.9
        
       
       
       
       
      Total liabilities and common shareholders' equity $3,979.3 $8,793.8 $9,907.1 $(3,665.1)$19,015.1
        
       
       
       
       

      Consolidating Balance Sheet as of December 31, 2003

       The Company
       Other Entities
       Fund American
       Eliminations
       Total
       
       (Dollars in Millions)

      ASSETS               
      Fixed maturity investments, at fair value $ $71.0 $6,177.1 $ $6,248.1
      Short-term investments, at amortized cost  11.1  682.2  854.6  (1.3) 1,546.6
      Common equity securities, at fair value      513.6    513.6
      Other investments    89.9  149.3    239.2
        
       
       
       
       
       Total investments  11.1  843.1  7,694.6  (1.3) 8,547.5
      Cash  .3  27.1  62.5    89.9
      Reinsurance recoverable on paid and unpaid losses    8.8  3,586.7    3,595.5
      Funds held by ceding companies    5.9  138.2    144.1
      Securities lending collateral      911.0    911.0
      Accounts receivable on unsettled investment sales      9.1    9.1
      Insurance and reinsurance premiums receivable    44.6  744.4  (10.0) 779.0
      Investment in unconsolidated insurance affiliates    90.5  425.4    515.9
      Deferred tax asset    (8.2) 361.6  (93.4) 260.0
      Deferred acquisition costs    3.6  230.0    233.6
      Ceded unearned premiums    .9  184.4    185.3
      Investment income accrued      73.0    73.0
      Investments in subsidiaries  3,021.0      (3,021.0) 
      Other assets  5.0  80.9  477.9  (25.7) 538.1
        
       
       
       
       
       Total assets $3,037.4 $1,097.2 $14,898.8 $(3,151.4)$15,882.0
        
       
       
       
       
      LIABILITIES AND COMMON SHAREHOLDERS' EQUITY               
      Loss and LAE reserves $ $75.9 $7,652.3 $ $7,728.2
      Unearned insurance and reinsurance premiums    23.3  1,386.1    1,409.4
      Securities lending liability      911.0    911.0
      Debt    12.9  730.1    743.0
      Deferred tax liability     .2  .2     .4
      Ceded reinsurance payable      158.3    158.3
      Accounts payable on unsettled investment purchases    302.0  69.6    371.6
      Funds held under reinsurance treaties      211.9    211.9
      Other liabilities  58.2  318.6  928.1  (130.4) 1,174.5
      Preferred stock subject to mandatory redemption    20.0  174.5    194.5
        
       
       
       
       
       Total liabilities  58.2  752.9  12,222.1  (130.4) 12,902.8
        
       
       
       
       
      Common shareholders' equity $2,979.2 $344.3 $2,676.7 $(3,021.0)$2,979.2
        
       
       
       
       
      Total liabilities common shareholders' equity $3,037.4 $1,097.2 $14,898.8 $(3,151.4)$15,882.0
        
       
       
       
       

      Consolidating Statement of Income for the Year Ended December 31, 2004

       The Company
       Other Entities
       Fund American
       Eliminations
       Total
       
       
       (Dollars in Millions)

       
      Earned insurance and reinsurance premiums $ $768.5 $3,052.0 $ $3,820.5 
      Net investment income  1.8  72.6  286.5    360.9 
      Net realized investment gains (losses)  1.9  40.9  138.3    181.1 
      Other revenue    (39.6) 230.1    190.5 
        
       
       
       
       
       
       Total revenues  3.7  842.4  3,706.9    4,553.0 
        
       
       
       
       
       
      Loss and LAE    494.1  2,097.0    2,591.1 
      Insurance and reinsurance acquisition expenses    135.4  608.1    743.5 
      Other underwriting expenses    55.2  466.1    521.3 
      General and administrative expenses  65.0  59.5  184.8    309.3 
      Accretion of fair value adjustment to loss and LAE reserves    10.1  33.2    43.3 
      Interest expense on debt  0.3  2.7  46.1    49.1 
      Interest expense on preferred shares    2.0  45.6    47.6 
        
       
       
       
       
       
       Total expenses  65.3  759.0  3,480.9    4,305.2 
        
       
       
       
       
       
      Pretax income (loss)  (61.6) 83.4  226.0    247.8 
      Income tax benefit (provision)  9.3  74.6  (130.9)   (47.0)
      Equity in earnings of subsidiaries  430.3      (430.3)  
      Equity in earnings of unconsolidated insurance affiliates    10.0  27.4    37.4 
      Excess of fair value of acquired net assets over cost  40.7  130.7  9.1    180.5 
        
       
       
       
       
       
      Net income $418.7 $298.7 $131.6 $(430.3)$418.7 
        
       
       
       
       
       

      Consolidating Statement of Income for the Year Ended December 31, 2003

       The Company
       Other Entities
       Fund American
       Eliminations
       Total
       
       
       (Dollars in millions)

       
      Earned insurance and reinsurance premiums $ $78.3 $3,059.4 $ $3,137.7 
      Net investment income  .2  4.9  285.8    290.9 
      Net realized investment gains (losses)  (1.1) 34.8  128.9    162.6 
      Other revenue (loss)  (.5) 80.6  153.2  (30.7) 202.6 
        
       
       
       
       
       
       Total revenues  (1.4) 198.6  3,627.3  (30.7) 3,793.8 
        
       
       
       
       
       
      Losses and LAE    53.3  2,084.8    2,138.1 
      Insurance and reinsurance acquisition expenses    16.9  618.0  (19.9) 615.0 
      Other underwriting expenses    3.2  343.9    347.1 
      General and administrative expenses  70.7  22.3  120.8  (12.0) 201.8 
      Accretion of fair value adjustment to loss and LAE reserves      48.6    48.6 
      Interest expense on debt    .3  48.3    48.6 
      Interest expense on preferred shares    1.0  21.3    22.3 
        
       
       
       
       
       
       Total expenses  70.7  97.0  3,285.7  (31.9) 3,421.5 
        
       
       
       
       
       
      Pretax income (loss)  (72.1) 101.6  341.6  1.2  372.3 
      Income tax benefit (provision)  (.1) .2  (126.5) (1.2) (127.6)
      Accretion and dividends on preferred stock of subsidiaries    (1.0) (20.5)   (21.5)
      Equity in earnings of subsidiaries  352.8      (352.8)  
      Equity in earnings of unconsolidated insurance affiliates      57.4    57.4 
      Cumulative effect of changes in accounting principles           
        
       
       
       
       
       
      Net income $280.6 $100.8 $252.0 $(352.8)$280.6 
        
       
       
       
       
       

      Consolidating Statement of Cash Flows
      for the Year Ended December 31, 2004

       The Company
       Other Entities
       Fund American
       Total
       
       
       (Dollars in Millions)

       
      Net income (loss), excluding undistributed equity in earnings of subsidiaries $(1.4)$288.5 $131.6 $418.7 
      Charges (credits) to reconcile net income to cash flows from operating activities:             
       Excess of fair value of acquired net assets over cost  (40.7) (130.7) (9.1) (180.5)
       Net realized investment gains  (1.9) (40.9) (138.3) (181.1)
       Undistributed equity in earnings from unconsolidated affiliates, net of tax    (10.0) (27.4) (37.4)
       Deferred income tax (benefit) provision    (181.8) 122.8  (59.0)
      Other operating items:             
       Net Federal income tax payments    (58.8) (27.7) (86.5)
       Net change in insurance and reinsurance balances receivable    199.9  (109.9) 90.0 
       Net change in reinsurance recoverable on paid and unpaid losses    121.6  179.2  300.8 
       Net change in deferred acquisition costs    9.8  (43.3) (33.5)
       Net change in loss and LAE reserves and reserves for structured contracts    (277.6) (529.1) (806.7)
       Net change in unearned insurance and reinsurance premiums    (177.0) 123.0  (54.0)
       Net change in other assets and liabilities, net  (7.8) 293.9  (213.6) 72.5 
        
       
       
       
       
      Net cash flows provided from (used for) operating activities  (51.8) 36.9  (541.8) (556.7)
        
       
       
       
       
      Cash flows from investing activities:             
      Net (increase) decrease in short-term investments  (5.1) 509.0  264.3  768.2 
      Sales of fixed maturity investments    921.9  4,983.2  5,905.1 
      Maturities of fixed maturity investments    560.0  1,001.7  1,561.7 
      Sales of common equity securities and other investments    268.9  288.4  557.3 
      Sales of consolidated and unconsolidated affiliates, net of cash sold    (32.6) 253.5  220.9 
      Purchases of fixed maturity investments  (242.1) (1,430.5) (5,484.7) (7,157.3)
      Purchases of common equity securities and other investments    (128.0) (250.8) (378.8)
      Purchases of consolidated and unconsolidated affiliates, net of cash acquired    (516.6) (143.2) (659.8)
      Net change in unsettled investment purchases and sales    (299.8) (37.4) (337.2)
      Net acquisitions of property and equipment    (1.1) (12.5) (13.6)
        
       
       
       
       
      Net cash flows provided from (used for) investing activities  (247.2) (148.8) 862.5  466.5 
        
       
       
       
       
      Cash flows from financing activities:             
      Proceeds from issuance of Common Shares  307.8      307.8 
      Proceeds from issuance of debt    (27.0) 27.0   
      Repayments of debt      (25.0) (25.0)
      Dividends paid on mandatorily redeemable preferred stock of subsidiaries    (2.0) (28.3) (30.3)
      Dividends paid on Common Shares  (9.1)     (9.1)
      Intercompany dividends and distributions    309.6  (309.6)  
        
       
       
       
       
      Net cash provided from (used for) financing activities  298.7  280.6  (335.9) 243.4 
        
       
       
       
       
      Net increase (decrease) in cash during period  (.3) 168.7  (15.2) 153.2 
      Cash balances at beginning of period  .3  27.1  62.5  89.9 
        
       
       
       
       
      Cash balances at end of period $ $195.8 $47.3 $243.1 
        
       
       
       
       

      Consolidating Statement of Cash Flows
      for the Year Ended December 31, 2003

       The Company
       Other Entities
       Fund American
       Total
       
       
       (Dollars in Millions)

       
      Net income (loss), excluding equity in earnings of subsidiaries $(72.2)$100.8 $252.0 $280.6 
      Charges (credits) to reconcile net income to cash flows from operating activities:             
       Net realized investment (gains) losses  1.1  (34.8) (128.9) (162.6)
       Undistributed equity in earnings from unconsolidated affiliates, net of tax      (57.4) (57.4)
       Deferred income tax provision (benefit)    47.2  57.8  105.0 
      Other operating items:             
       Net Federal income tax receipts (payments)  32.0  (4.6)   27.4 
       Net change in insurance and reinsurance balances receivable    (6.0) 57.5  51.5 
       Net change in reinsurance recoverable on paid and unpaid losses    (3.6) 639.8  636.2 
       Net change in deferred acquisition costs  (.3) (.4) 12.0  11.3 
       Net change in loss and LAE reserves and reserves for structured contracts    14.5  (1,161.6) (1,147.1)
       Net change in unearned insurance and reinsurance premiums    6.0  (111.0) (105.0)
       Net change in other assets and liabilities, net  43.0  (61.5) (129.9) (148.4)
        
       
       
       
       
      Net cash flows (used for) provided from operating activities  3.6  57.6  (569.7) (508.5)
        
       
       
       
       
      Cash flows from investing activities:             
      Net decrease (increase) in short-term investments  4.5  (460.9) 700.4  244.0 
      Sales of fixed maturity investments    69.6  17,220.9  17,290.5 
      Maturities of fixed maturity investments      1,372.0  1,372.0 
      Sales of common equity securities and other investments      160.1  160.1 
      Sales of consolidated and unconsolidated affiliates, net of cash sold      25.0  25.0 
      Purchases of fixed maturity investments    (93.1) (18,155.1) (18,248.2)
      Purchases of common equity securities and other investments  (.2)   (354.2) (354.4)
      Net change in unsettled investment purchases and sales    302.0  (273.9) 28.1 
      Net dispositions (acquisitions) of property and equipment    (.1) 43.5  43.4 
        
       
       
       
       
      Net cash flows provided from (used for) investing activities  4.3  (182.5) 738.7  560.5 
        
       
       
       
       
      Cash flows from financing activities:             
      Proceeds from issuance of Common Shares  1.5      1.5 
      Proceeds from issuance of debt      693.4  693.4 
      Repayments of debt      (739.9) (739.9)
      Dividends paid on mandatorily redeemable preferred stock of subsidiaries    (2.0) (28.3) (30.3)
      Dividends paid on Common Shares  (8.3)     (8.3)
      Intercompany dividends and distributions    112.6  (112.6)  
        
       
       
       
       
      Net cash (used for) provided from financing activities  (6.8) 110.6  (187.4) (83.6)
        
       
       
       
       
      Net (decrease) increase in cash during period  1.1  (14.3) (18.4) (31.6)
      Cash balances at beginning of period  (.8) 41.4  80.9  121.5 
        
       
       
       
       
      Cash balances at end of period $.3 $27.1 $62.5 $89.9 
        
       
       
       
       


      MANAGEMENT'SMANAGEMENT’S RESPONSIBILITY FOR FINANCIAL STATEMENTS

       

      Management is responsible for the preparation and fair presentation of the financial statements included in this report. The financial statements have been prepared in conformity with GAAP in the United States. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

       

      The Audit Committee of the Board, which is comprised entirely of independent, qualified directors, is responsible for the oversight of our accounting policies, financial reporting and internal control including the appointment and compensation of our independent registered public accounting firm. The Audit Committee meets periodically with management, our independent registered public accounting firm and our internal auditors to ensure they are carrying out their responsibilities. The Audit Committee is also responsible for performing an oversight role by reviewing our financial reports. Our independent registered public accounting firm and internal auditors have full and unlimited access to the Audit Committee, with or without management present, to discuss the adequacy of internal control over financial reporting and any other matters which they believe should be brought to their attention.


      MANAGEMENT'SMANAGEMENT’S ANNUAL REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

       

      Management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934. There are inherent limitations in the effectiveness of any internal control over financial reporting, including the possibility of human error and the circumvention or overriding of internal control. Accordingly, even effective internal control over financial reporting can provide only reasonable assurance with respect to financial statement preparation. Further, an effective internal control environment as of a point in time may become inadequate in the future because of changes in conditions, or deterioration in the degree of compliance with the policies and procedures.

       

      We assessed the effectiveness of White Mountains'Mountains’ internal control over financial reporting as of December 31, 2004.2006. Our assessment did not include an assessment of the internal control over financial reporting for certain recent acquisitions. These acquisitions were Sirius, the Sierra group, Tryg-Baltica and Atlantic SpecialtyMutual Service Casualty Insurance Company which represent 17.0%, 2.4%, .9% and ..5%was acquired on December 22, 2006. This acquisition represents less than 1% of White Mountains'Mountains’ total assets as of December 31, 2004, respectively,2006 and 11.3%, .5%, .6%, and 6.1%, respectively,less than 1% of White Mountains'Mountains’ total revenue for the year ended December 31, 2004.2006. In making our assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework. Based on this assessment, we have concluded that White Mountains maintained effective internal control over financial reporting as of December 31, 2004.2006.

       

      PricewaterhouseCoopers LLP, the Company'sCompany’s independent registered public accounting firm, has audited management'smanagement’s assessment of the effectiveness of White Mountains'Mountains’ internal control over financial reporting as of December 31, 20042006 as stated in their report which appears on page F-72.pages F-65 through F-66.

      March 1, 2005

      February 28, 2007

      /s/ RAYMOND BARRETTE


      Raymond Barrette

      /s/ DAVID T. FOY



      Raymond Barrette
      Director, President and CEO
      (Principal Executive Officer)


      David T. Foy

      Chairman and CEO

      Executive Vice President and CFO

      (Principal Executive Officer)

      (Principal Financial Officer)


      Report of Independent Registered Public Accounting Firm


      REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

      To the Board of Directors and Shareholders of White Mountains Insurance Group, Ltd.:

      We have completed an integrated auditaudits of White Mountains Insurance Group, Ltd.'s 2004’s consolidated financial statements and of its internal control over financial reporting as of December 31, 2004 and audits of its 2003 and 2002 consolidated financial statements2006 in accordance with the standards of the Public Company Accounting Oversight Board (United States). Our opinions, based on our audits, are presented below.

      Consolidated financial statements and financial statement schedules

      In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the financial position of White Mountains Insurance Group, Ltd. and its subsidiaries at December 31, 20042006 and 2003,2005, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 20042006 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedules listed in the accompanying index present fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. These financial statements and financial statement schedules are the responsibility of the Company'sCompany’s management. Our responsibility is to express an opinion on these financial statements and financial statement schedules based on our audits. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit of financial statements includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

      Internal control over financial reporting

      Also, in our opinion, management'smanagement’s assessment, appearing under Item 9A and included in Management'sManagement’s Annual Report on Internal Control Over Financial Reporting appearing under item 9A which appears on page F-71,F-64, that the Company maintained effective internal control over financial reporting as of December 31, 20042006 based on criteria established inInternal Control—Control - Integrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), is fairly stated, in all material respects, based on those criteria. Furthermore, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2004,2006, based on criteria established inInternal Control—Control - Integrated Frameworkissued by the COSO. The Company'sCompany’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting. Our responsibility is to express opinions on management'smanagement’s assessment and on the effectiveness of the Company'sCompany’s internal control over financial reporting based on our audit. We conducted our audit of internal control over financial reporting in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. An audit of internal control over financial reporting includes obtaining an understanding of internal control over financial reporting, evaluating management'smanagement’s assessment, testing and evaluating the design and operating effectiveness of internal control, and performing such otherprocedures as we consider necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinions.



       

      A company'scompany’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company'scompany’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company'scompany’s assets that could have a material effect on the financial statements.

      Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may becomeinadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

      As described in Management'sManagement’s Annual Report on Internal Control Over Financial Reporting, management has excluded Sirius, Sierra group, Tryg-Baltica and Atlantic SpecialtyMutual Service Casualty Insurance Company from its assessment of internal control over financial reporting as of December 31, 20042006 because they wereit was acquired by the Company in purchase business combinations during 2004.2006. As a result, we have also excluded Sirius, Sierra group, Tryg-Baltica and Atlantic SpecialtyMutual Service Casualty Insurance Company from our audit of internal control over financial reporting. Sirius, Sierra group, Tryg-Baltica and Atlantic Specialty areMutual Service Casualty Insurance Company is a wholly-owned subsidiariessubsidiary whose total assets and total revenues represent 17.0%, 2.4%, .9%, .5%, and 11.3%, .5%, .6%, 6.1%, respectively,less than 1% of the related consolidated financial statement amounts as of and for the year ended December 31, 2004.2006.

      /s/ PricewaterhouseCoopers LLP


      Boston, Massachusetts
      March 1, 2005February 28, 2007



      SELECTED QUARTERLY FINANCIAL DATA
      (Unaudited)

                      Selected quarterly financial data for 20042006 and 20032005 is shown in the following table. The quarterly financial data includes, in the opinion of management, all recurring adjustments necessary for a fair presentation of the results of operations for the interim periods. Certain reclassifications have been made to prior quarterly results to conform with the 2004 annual presentation.



       2004 Three Months Ended
       2003 Three Months Ended
       

       

      2006 Three Months Ended

       

      2005 Three Months Ended

       


       Dec. 31
       Sept. 30
       June 30
       Mar. 31
       Dec. 31
       Sept. 30
       June 30
       Mar. 31
       

       Millions, except per share amounts

       

      Millions, except per share amounts

       

      Dec. 31

       

      Sept. 30

       

      June 30

       

      Mar. 31

       

      Dec. 31

       

      Sept. 30

       

      June 30

       

      Mar. 31

       

      RevenuesRevenues $1,248.1 $1,163.6 $1,119.1 $1,022.2 $951.3 $911.6 $961.4 $969.5 

       

      $

      1,349.3

       

      $

      1,186.2

       

      $

      1,200.9

       

      $

      1,057.8

       

      $

      1,058.1

       

      $

      1,177.6

       

      $

      1,170.9

       

      $

      1,225.3

       

      ExpensesExpenses  1,132.4  1,241.7  1,022.5  908.6  885.5  875.2  837.3  823.5 

       

      1,036.4

       

      957.7

       

      1,129.3

       

      941.0

       

      1,044.4

       

      1,306.4

       

      974.9

       

      1,001.0

       

       
       
       
       
       
       
       
       
       
      Pretax earnings (loss)  115.7  (78.1) 96.6  113.6  65.8  36.4  124.1  146.0 

      Pre-tax earnings (loss)

       

      312.9

       

      228.5

       

      71.6

       

      116.8

       

      13.7

       

      (128.8

      )

      196.0

       

      224.3

       

      Tax benefit (provision)Tax benefit (provision)  18.7(1) 23.6  (44.4) (44.9) (22.4) (14.4) (44.7) (46.1)

       

      (32.0

      )

      (69.3

      )

      29.3

       

      (26.9

      )

      19.6

       

      55.6

       

      (55.4

      )

      (56.3

      )

      Minority interest in consolidated subsidiaries

       

      (10.5

      )

      (2.7

      )

      0.1

       

      (2.9

      )

      (5.9

      )

      (2.0

      )

      (2.9

      )

      (1.4

      )

      Equity in earnings of unconsolidated affiliatesEquity in earnings of unconsolidated affiliates  10.6  3.7  4.9  18.2  15.1  13.6  15.8  12.9 

       

      7.5

       

      5.6

       

      14.8

       

      9.0

       

      5.9

       

      8.9

       

      9.1

       

      9.7

       

      Accretion and dividends on preferred stock of subsidiaries              (10.8) (10.7)
       
       
       
       
       
       
       
       
       
      Net income (loss) before accounting changes and extraordinary items $145.0 $(50.8)$57.1 $86.9 $58.5 $35.6 $84.4 $102.1 
       
       
       
       
       
       
       
       
       
      Net income (loss) before accounting changes and extraordinary items per share:                         
      Basic $13.48 $(4.72)$6.30 $9.64 $6.50 $3.96 $5.38 $10.94 
      Diluted  13.48  (4.72) 5.56  8.52  5.75  3.50  4.77  9.92 
       
       
       
       
       
       
       
       
       

      Income (loss) before extraordinary items

       

      $

      277.9

       

      $

      162.1

       

      $

      115.8

       

      $

      96.0

       

      $

      33.3

       

      $

      (66.3

      )

      $

      146.8

       

      $

      176.3

       

      Income (loss) before extraordinary items
      per share:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Basic

       

      $

      60.52

       

      $

      15.05

       

      $

      10.75

       

      $

      8.92

       

      $

      3.10

       

      $

      (6.16

      )

      $

      13.64

       

      $

      16.38

       

      Diluted

       

      60.33

       

      15.01

       

      10.72

       

      8.89

       

      2.82

       

      (6.16

      )

      13.64

       

      16.24

       

      Fully converted tangible book value per shareFully converted tangible book value per share $342.52 $319.98 $312.82 $309.39 $291.27 $282.24 $280.88 $266.96 

       

      $

      406.00

       

      $

      373.33

       

      $

      355.16

       

      $

      352.01

       

      $

      342.51

       

      $

      345.02

       

      $

      359.11

       

      $

      347.89

       

       
       
       
       
       
       
       
       
       

      F-67



      (1)
      Includes $38.8 million related to foreign tax credits that resulted from an extension to the carryforward period under the Jobs Creation Act of 2004.



      SCHEDULE I

      WHITE MOUNTAINS INSURANCE GROUP, LTD.

      SUMMARY OF INVESTMENTS—INVESTMENTS — OTHER THAN
      INVESTMENTS IN RELATED PARTIES
      At December 31, 20042006

       

       

       

       

      Carrying

       

      Fair

       

      Millions

       

      Cost

       

      Value

       

      Value

       

      Fixed maturities (1):

       

       

       

       

       

       

       

      Bonds:

       

       

       

       

       

       

       

      U.S. Government and government agencies and authorities (2)

       

      $

      1,956.3

       

      $

      1,949.4

       

      $

      1,948.4

       

      Corporate bonds and asset-backed securities

       

      4,947.9

       

      4,977.1

       

      4,977.1

       

      States, municipalities and political subdivisions

       

      15.5

       

      16.0

       

      16.0

       

      Convertibles and bonds with warrants attached

       

      429.5

       

      429.5

       

      429.5

       

      Foreign governments

       

      657.2

       

      708.4

       

      708.4

       

      Redeemable preferred stocks

       

      111.5

       

      136.1

       

      136.1

       

      Total fixed maturities

       

      8,117.9

       

      8,216.5

       

      8,215.5

       

       

       

       

       

       

       

       

       

      Short-term investments

       

      1,378.8

       

      1,378.8

       

      1,378.8

       

       

       

       

       

       

       

       

       

      Common equity securities:

       

       

       

       

       

       

       

      Banks, trust and insurance companies

       

      197.5

       

      232.2

       

      232.2

       

      Public utilities

       

      34.2

       

      64.4

       

      64.4

       

      Industrial, miscellaneous and other

       

      740.3

       

      916.0

       

      916.0

       

      Total common equity securities

       

      972.0

       

      1,212.6

       

      1,212.6

       

       

       

       

       

       

       

       

       

      Other investments

       

      467.1

       

      524.8

       

      524.8

       

       

       

       

       

       

       

       

       

      Total investments

       

      $

      10,935.8

       

      $

      11,332.7

       

      $

      11,331.7

       


      (1)     White Mountains’ portfolio of fixed maturity investments held for general investment purposes are classified as available for sale and are reported at fair value at December 31, 2006. White Mountains’ portfolio of fixed maturity investments held in the segregated trust accounts are classified at held to maturity and are reported at amortized cost

      Millions

       Cost
       Fair
      Value

      Fixed maturities:      
       Bonds:      
        U.S. Government and government agencies and authorities(1) $2,444.7 $2,475.5
        Corporate bonds and asset-backed securities  4,210.7  4,349.8
        States, municipalities and political subdivisions  91.3  92.7
        Convertibles and bonds with warrants attached  84.2  94.3
        Foreign governments  780.3  794.2
        Redeemable preferred stocks  72.9  93.5
        
       
       Total fixed maturities  7,684.1  7,900.0
        
       
      Short-term investments  1,058.2  1,058.2

      Common equity securities:

       

       

       

       

       

       
        Banks, trust and insurance companies  291.2  400.2
        Public utilities  138.1  180.4
        Industrial, miscellaneous and other  346.6  463.3
        
       
       Total common equity securities  775.9  1,043.9
      Other investments  442.7  527.4
        
       
       Total investments $9,960.9 $10,529.5
        
       

      (1)

      (2)  Includes mortgage-backed securities issued by GNMA, FNMA and FHLMC.

      Note—fair value was equal to carrying value at December 31, 2004.

      FS-1





      SCHEDULE II

      WHITE MOUNTAINS INSURANCE GROUP, LTD.
      (Registrant Only)

      CONDENSED BALANCE SHEETS



       December 31,

       

      December 31,

       

      Millions

      Millions

       

      2006

       

      2005

       

      2004
       2003
      Assets:Assets:    

       

       

       

       

       

      Common equity securities and other investments $246.8 $
      Short-term investments, at amortized cost 16.2 11.1
      Other assets 13.9 5.3
      Investments in consolidated and unconsolidated affiliates 3,702.4 3,021.0
       
       
       Total assets $3,979.3 $3,037.4
       
       

      Fixed maturity investments, at fair value

       

      $

      194.3

       

      $

      193.5

       

      Short-term investments, at amortized cost

       

      85.6

       

      .4

       

      Other assets

       

      81.1

       

      4.6

       

      Investments in consolidated and unconsolidated affiliates

       

      4,486.2

       

      3,669.7

       

      Total assets

       

      $

      4,847.2

       

      $

      3,868.2

       

      Liabilities:Liabilities:    

       

       

       

       

       

      Long-term debt $ $
      Accounts payable and other liabilities 95.4 58.2
       
       
      Total liabilities 95.4 58.2
      Convertible preference shares  
      Common shareholders' equity 3,883.9 2,979.2
       
       
       Total liabilities, convertible preference shares and common shareholders' equity $3,979.3 $3,037.4
       
       

      Long-term debt

       

      $

      320.0

       

      $

       

      Accounts payable and other liabilities

       

      71.9

       

      35.0

       

      Total liabilities

       

      391.9

       

      35.0

       

      Common shareholders’ equity

       

      4,455.3

       

      3,833.2

       

      Total liabilities, convertible preference shares and common shareholders’ equity

       

      $

      4,847.2

       

      $

      3,868.2

       

      CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Revenues (including realized gains and losses) $3.7 $(1.4)$84.7 
      Expenses  65.3  70.7  24.9 
        
       
       
       
      Pretax income (loss)  (61.6) (72.1) 59.8 
      Income tax provision  9.3  (.1)  
        
       
       
       
      Net income (loss)  (52.3) (72.2) 59.8 
      Earnings (losses) from consolidated affiliates  430.3  352.8  672.0 
      Cumulative effect of changes in accounting principles      16.3 
      Excess of fair value of acquired net assets over cost  40.7     
        
       
       
       
      Consolidated net income (loss)  418.7  280.6  748.1 
      Other comprehensive net income (loss) items, after-tax  176.5  79.0  202.3 
        
       
       
       
      Consolidated comprehensive net income (loss) $595.2 $359.6 $950.4 
        
       
       
       
      Computation of net income (loss) available to common shareholders:          
      Consolidated net income (loss) $418.7 $280.6 $748.1 
      Redemption value adjustment—Convertible Preference Shares    (49.5) (19.0)
      Dividends on Convertible Preference Shares      (.4)
        
       
       
       
      Net income (loss) available to common shareholders $418.7 $231.1 $728.7 
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Revenues (including realized gains and losses)

       

      $

      22.9

       

      $

      47.1

       

      $

      3.7

       

      Expenses

       

      41.1

       

      1.1

       

      65.3

       

      Pre-tax income (loss)

       

      (18.2

      )

      46.0

       

      (61.6

      )

      Income tax benefit (provision)

       

      (2.6

      )

      (.6

      )

      9.3

       

      Net income (loss)

       

      (20.8

      )

      45.4

       

      (52.3

      )

      Earnings from consolidated affiliates

       

      694.0

       

      244.7

       

      430.3

       

      Excess of fair value of acquired net assets over cost

       

       

       

      40.7

       

      Consolidated net income

       

      673.2

       

      290.1

       

      418.7

       

      Other comprehensive net income items, after-tax

       

      32.9

       

      (254.1

      )

      176.5

       

      Consolidated comprehensive net income

       

      $

      706.1

       

      $

      36.0

       

      $

      595.2

       

      Computation of net income available to common shareholders:

       

       

       

       

       

       

       

      Consolidated net income

       

      $

      673.2

       

      $

      290.1

       

      $

      418.7

       

      Redemption value adjustment — Convertible Preference Shares

       

       

       

       

      Net income available to common shareholders

       

      $

      673.2

       

      $

      290.1

       

      $

      418.7

       

      FS-2




      SCHEDULE II
      (continued)

      WHITEWHITE MOUNTAINS INSURANCE GROUP, LTD.
      (Registrant Only)

      CONDENSED STATEMENTS OF CASH FLOWS

       
       Year Ended December 31,
       
      Millions

       
       2004
       2003
       2002
       
      Net income (loss) $418.7 $280.6 $748.1 
      Reconciliation of net income to net cash from operating activities:          
       Excess of fair value of acquired net assets over cost  (40.7)    
       Cumulative effect of change in accounting principles      (16.3)
       Net realized (gains) losses on sales of investments  (1.9) 1.1  (57.9)
       Undistributed current earnings from consolidated subsidiaries  (420.1) (352.8) (648.7)
       Net Federal income tax receipts    32.0   
       Net change in other assets and other liabilities  (7.8) 42.7  17.7 
        
       
       
       
      Net cash (used for) provided from operating activities  (51.8) 3.6  42.9 
        
       
       
       
      Cash flows from investing activities:          
       Net (increase) decrease in short-term investments  (5.1) 4.5  39.0 
       Purchases of investment securities  (242.1) (.2) (.2)
       Contributions to subsidiaries      (300.0)
        
       
       
       
      Net cash (used for) provided from investing activities  (247.2) 4.3  (261.2)
        
       
       
       
      Cash flows from financing activities:          
      Proceeds from issuances of Common Shares and Convertible Preference Shares  307.8  1.5  226.4 
      Dividends paid on Common Shares  (9.1) (8.3) (8.3)
      Dividends paid on Convertible Preference Shares      (.4)
        
       
       
       
      Net cash provided from (used for) financing activities  298.7  (6.8) 217.7 
        
       
       
       
      Net change in cash during year  (.3) 1.1  (.6)
      Cash balance at beginning of year  .3  (.8) (.2)
        
       
       
       
      Cash balance at end of year $ $.3 $(.8)
        
       
       
       

       

       

      Year Ended December 31,

       

      Millions

       

      2006

       

      2005

       

      2004

       

      Net income

       

      $

      673.2

       

      $

      290.1

       

      $

      418.7

       

      Charges (credits) to reconcile net income to net cash from operations:

       

       

       

       

       

       

       

      Excess of fair value of acquired net assets over cost

       

       

       

      (40.7

      )

      Net realized gains on sales of investments

       

      (8.6

      )

      (8.8

      )

      (1.9

      )

      Undistributed current earnings from consolidated subsidiaries

       

      (694.0

      )

      (209.7

      )

      (420.1

      )

      Net Federal income tax receipts

       

       

      11.1

       

       

      Net change in other assets and other liabilities

       

      15.4

       

      (64.0

      )

      (7.8

      )

      Net cash (used for) provided from operations

       

      (14.0

      )

      18.7

       

      (51.8

      )

      Cash flows from investing activities:

       

       

       

       

       

       

       

      Net (increase) decrease in short-term investments

       

      (85.2

      )

      15.8

       

      (5.1

      )

      Purchases of investment securities

       

      (243.2

      )

      (99.3

      )

      (242.1

      )

      Sales and maturities of investment securities

       

      158.8

       

      149.9

       

       

      Net change in unsettled investment purchases and sales

       

      8.1

       

       

       

      Net cash (used for) provided from investing activities

       

      (161.5

      )

      66.4

       

      (247.2

      )

      Cash flows from financing activities:

       

       

       

       

       

       

       

      Issuance of debt

       

      460.0

       

       

       

      Repayment of debt

       

      (140.0

      )

       

       

      Issuance of debt to affiliates

       

      (448.7

      )

       

       

      Repayment of debt from affiliates

       

      477.3

       

       

       

      Contributions to affiliates

       

      (87.5

      )

       

       

      Proceeds from issuances of common shares

       

      .6

       

      1.1

       

      307.8

       

      Dividends paid on common shares

       

      (86.2

      )

      (86.2

      )

      (9.1

      )

      Net cash provided from (used for) financing activities

       

      175.5

       

      (85.1

      )

      298.7

       

      Net decrease in cash during the year

       

       

       

      (.3

      )

      Cash balance at beginning of year

       

       

       

      .3

       

      Cash balance at end of year

       

      $

       

      $

       

      $

       

      FS-3





      SCHEDULE III

      WHITE MOUNTAINS INSURANCE GROUP, LTD.


      SUPPLEMENTARY INSURANCE INFORMATION
      (Millions)

      Column A

       

      Column B

       

      Column C

       

      Column D

       

      Column E

       

      Column F

       

      Column G

       

      Column H

       

      Column I

       

      Column J

       

      Column K

       

       

       

       

       

      Future policy

       

       

       

      Other

       

       

       

       

       

      Benefits,

       

      Amortization

       

       

       

       

       

       

       

       

       

      benefits,

       

       

       

      policy

       

       

       

       

       

      claims,

       

      of deferred

       

       

       

       

       

       

       

      Deferred

       

      losses, claims

       

       

       

      claims and

       

       

       

      Net

       

      losses, and

       

      policy

       

      Other

       

       

       

       

       

      acquisition

       

      and loss

       

      Unearned

       

      benefits

       

      Premiums

       

      investment

       

      settlement

       

      acquisition

       

      operating

       

      Premiums

       

      Segment

       

      costs

       

      expenses

       

      premiums

       

      payable

       

      earned

       

      income (1)

       

      expenses

       

      costs

       

      expenses

       

      written

       

      Years ended:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2006:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon

       

      $

      183.8

       

      $

      4,837.7

       

      $

      985.2

       

      $

       

      $

      1,944.0

       

      $

      176.1

       

      $

      1,180.4

       

      $

      332.2

       

      $

      360.1

       

      $

      1,957.6

       

      WM Re

       

      99.8

       

      3,708.8

       

      431.6

       

       

      1,241.2

       

      182.7

       

      884.6

       

      287.3

       

      94.7

       

      1,290.0

       

      Esurance

       

      36.6

       

      167.5

       

      168.1

       

       

      527.5

       

      18.4

       

      383.9

       

      135.3

       

      48.8

       

      595.9

       

      Other insurance operations

       

       

      63.2

       

       

       

       

      1.0

       

      3.9

       

       

      1.8

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2005:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon

       

      $

      180.1

       

      $

      5,395.9

       

      $

      960.3

       

      $

       

      $

      2,118.4

       

      $

      238.1

       

      $

      1,401.5

       

      $

      390.7

       

      $

      278.9

       

      $

      2,121.1

       

      WM Re

       

      87.2

       

      4,680.3

       

      521.9

       

       

      1,371.6

       

      148.9

       

      1,237.9

       

      279.6

       

      107.0

       

      1,304.1

       

      Esurance

       

      21.1

       

      94.0

       

      99.8

       

       

      306.8

       

      9.8

       

      206.2

       

      90.8

       

      37.2

       

      349.1

       

      Other insurance operations

       

       

      61.0

       

       

       

      1.8

       

      29.4

       

      12.6

       

      0.1

       

      1.6

       

      1.8

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2004:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon

       

      $

      200.2

       

      $

      5,114.0

       

      $

      1,066.8

       

      $

       

      $

      2,378.5

       

      $

      222.9

       

      $

      1,545.2

       

      $

      442.3

       

      $

      369.2

       

      $

      2,459.1

       

      WM Re

       

      99.1

       

      4,170.3

       

      615.5

       

       

      1,265.5

       

      98.5

       

      918.9

       

      271.8

       

      122.9

       

      1,246.3

       

      Esurance

       

      8.9

       

      63.0

       

      57.2

       

       

      176.5

       

      3.5

       

      122.4

       

      30.3

       

      26.8

       

      199.4

       

      Other insurance operations

       

       

      51.2

       

       

       

       

      6.4

       

      4.6

       

       

      1.5

       

       


      (1)

      Column A
       Column B
       Column C
       Column D
       Column E
       Column F
       Column G
       Column H
       Column I
       Column J
       Column K
      Segment

       Deferred acquisition costs
       Future policy benefits, losses, claims and loss expenses
       Unearned premiums
       Other policy claims and benefits payable
       Premiums earned
       Net investment income(1)
       Benefits, claims, losses, and settlement expenses
       Amortization of deferred policy acquisition costs
       Other operating expenses
       Premiums written
      Years ended:                              
       December 31, 2004:                              
        OneBeacon $200.2 $5,475.5 $1,066.8 $ $2,378.5 $221.4 $1,545.2 $442.3 $369.2 $2,459.1
        WM Re  99.1  4,170.3  615.5    1,265.5  98.5  918.9  271.8  122.9  1,246.3
        Esurance  8.9  63.0  57.2    176.5  3.5  122.4  29.4  27.7  199.4
        Other insurance operations    (310.3)       37.5  4.6    1.5  
       December 31, 2003:                              
        OneBeacon $163.3 $6,241.2 $1,035.1 $ $2,160.3 $223.7 $1,475.6 $394.2 $258.7 $1,972.5
        WM Re  67.4  1,777.2  326.3    845.8  50.4  557.6  198.0  57.8  885.7
        Esurance  1.9  39.1  33.9    99.9  1.3  81.0  18.8  20.4  116.4
        Other insurance operations  1.0  (329.3) 14.1     31.7  15.5  23.9  4.0  10.2  33.1
       December 31, 2002:                              
        OneBeacon $188.4 $7,626.6 $1,265.1 $ $2,870.9 $314.0 $2,131.3 $629.6 $329.2 $2,522.8
        WM Re  55.8  1,693.9  219.8    635.0  51.5  442.2  161.2  41.0  688.2
        Esurance    15.5  17.4    40.8  1.2  36.6  9.7  22.4  53.0
        Other insurance operations  0.7  (460.7) 12.1    29.7  (0.7) 28.1  3.8  9.1  29.5

      (1)
      The amounts shown exclude net investment income (expense) relating to non-insurance operations of $29.6$48.0 million, $12.7$65.3 million and $(5.7)$29.6 million for the twelve months ended December 31, 2006, 2005 and 2004, 2003 and 2002, respectively.

      FS-4





      SCHEDULE IV

      WHITE MOUNTAINS INSURANCE GROUP, LTD.

      REINSURANCE
      REINSURANCE($ in millions)

      Column A

      Column A

       Column B
       Column C
       Column D
       Column E
       Column F
       

       

      Column B

       

      Column C

       

      Column D

       

      Column E

       

      Column F

       

      Premiums earned
      (Millions)

       Gross
      amount

       Ceded to
      other
      companies

       Assumed
      from other
      companies

       Net
      amount

       Percentage
      of amount
      assumed to net

       
      Years ended:           

      December 31, 2004:

       

       

       

       

       

       

       

       

       

       

       
      OneBeacon $2,253.9 $(206.5)$331.1 $2,378.5 13.9%

       

       

       

      Ceded to

       

      Assumed

       

       

       

      Percentage

       

      WM Re 310.4 (670.3) 1,625.4 1,265.5 128.4%

       

      Gross

       

      other

       

      from other

       

      Net

       

      of amount

       

      Premiums earned

       

      amount

       

      companies

       

      companies

       

      amount

       

      assumed to net

       

      Years ended:

       

       

       

       

       

       

       

       

       

       

       

      Esurance 153.6 (1.5) 24.4 176.5 13.8%

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2006:

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon

       

      $

      2,007.6

       

      $

      (129.0

      )

      $

      65.4

       

      $

      1,944.0

       

      3.4

      %

      WM Re

       

      240.2

       

      (447.8

      )

      1,448.8

       

      1,241.2

       

      116.7

      %

      Esurance

       

      495.3

       

      (3.5

      )

      35.7

       

      527.5

       

      6.8

      %

      Other insurance operations

       

       

       

       

       

      %

      Other insurance operations  (.1) .1  %

       

       

       

       

       

       

       

       

       

       

       


      December 31, 2003:

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2005:

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon

       

      $

      2,175.8

       

      $

      (160.1

      )

      $

      102.7

       

      $

      2,118.4

       

      4.8

      %

      WM Re

       

      347.6

       

      (760.6

      )

      1,784.6

       

      1,371.6

       

      130.1

      %

      Esurance

       

      280.1

       

      (2.4

      )

      29.1

       

      306.8

       

      9.5

      %

      Other insurance operations

       

       

      (.1

      )

      1.9

       

      1.8

       

      105.6

      %

      OneBeacon $2,234.2 $(443.0)$369.1 $2,160.3 17.1%

       

       

       

       

       

       

       

       

       

       

       

      WM Re 6.5 (462.0) 1,301.3 845.8 153.9%
      Esurance 69.2  30.7 99.9 30.7%
      Other insurance operations 39.2 (7.6) .1 31.7 .3%

      December 31, 2002:

       

       

       

       

       

       

       

       

       

       

       
      OneBeacon $3,181.8 $(815.5)$504.6 $2,870.9 17.6%
      WM Re 7.1 (294.5) 922.4 635.0 145.3%
      Esurance 9.9  30.9 40.8 75.7%
      Other insurance operations 34.8 (5.1)  29.7 %

      December 31, 2004:

       

       

       

       

       

       

       

       

       

       

       

      OneBeacon

       

      $

      2,253.9

       

      $

      (206.5

      )

      $

      331.1

       

      $

      2,378.5

       

      13.9

      %

      WM Re

       

      310.4

       

      (670.3

      )

      1,625.4

       

      1,265.5

       

      128.4

      %

      Esurance

       

      153.6

       

      (1.5

      )

      24.4

       

      176.5

       

      13.8

      %

      Other insurance operations

       

       

       

       

       

      %

      FS-5




      SCHEDULE V

      WHITE MOUNTAINS INSURANCE GROUP, LTD.

      VALUATION AND QUALIFYING ACCOUNTS

      Column A

      Column A

       Column B

       Column C

       Column D

       Column E

       

      Column B

       

      Column C

       

      Column D

       

      Column E

       

       

       

       

      Additions (subtractions)

       

       

       

       

       

       

      Balance at

       

      Charged to

       

      Charged

       

       

       

      Balance at

       



        
       Additions (subtractions)
        
        

       

      beginning

       

      costs and

       

      to other

       

      Deductions

       

      end

       

      Millions

      Millions

       Balance at
      beginning
      of period

       Charged to
      costs and
      expenses

       Charged
      to other
      accounts

       Deductions
      described(1)

       Balance
      at end
      of period

       

      of period

       

      expenses

       

      accounts

       

      described (1)

       

      of period

       

      Years ended:Years ended:          

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2006:

       

       

       

       

       

       

       

       

       

       

       

      Reinsurance recoverable on paid losses:

       

       

       

       

       

       

       

       

       

       

       

      Allowance for reinsurance balances

       

      $

      41.6

       

      $

      (16.9

      )

      $

       

      $

      4.3

       

      $

      29.0

       

      Property and casualty insurance and reinsurance premiums receivable:

       

       

       

       

       

       

       

       

       

       

       

      Allowance for uncollectible accounts

       

      20.7

       

      (4.3

      )

       

      6.5

       

      22.9

       

       

       

       

       

       

       

       

       

       

       

       

      December 31, 2005:

       

       

       

       

       

       

       

       

       

       

       

      Reinsurance recoverable on paid losses:

       

       

       

       

       

       

       

       

       

       

       

      Allowance for reinsurance balances

       

      $

      36.9

       

      $

      5.0

       

      $

      (4.6

      )

      $

      4.3

       

      $

      41.6

       

      Property and casualty insurance and reinsurance premiums receivable:

       

       

       

       

       

       

       

       

       

       

       

      Allowance for uncollectible accounts

       

      27.0

       

      1.9

       

      (8.8

      )

      .6

       

      20.7

       

       

       

       

       

       

       

       

       

       

       

       


      December 31, 2004:

      December 31, 2004:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Reinsurance recoverable on paid losses:          
       Allowance for reinsurance balances $15.9 $5.7 $3.2 $15.3(2)$40.1
      Property and casualty insurance and reinsurance premiums receivable:          
       Allowance for uncollectible accounts 23.0 (12.1)  12.9(2) 23.8

      December 31, 2003:

       

       

       

       

       

       

       

       

       

       
      Reinsurance recoverable on paid losses:          
       Allowance for reinsurance balances $18.5 $ $ $(2.6)$15.9
      Property and casualty insurance and reinsurance premiums receivable:          
       Allowance for uncollectible accounts 69.1 (26.0)  (20.1) 23.0

      December 31, 2002:

       

       

       

       

       

       

       

       

       

       
      Reinsurance recoverable on paid losses:          
       Allowance for reinsurance balances $25.2 $(6.1)$ $(.6)$18.5
      Property and casualty insurance and reinsurance premiums receivable:          
       Allowance for uncollectible accounts 96.9 (22.0)  (5.8) 69.1

      Reinsurance recoverable on paid losses:

       

       

       

       

       

       

       

       

       

       

       

      Allowance for reinsurance balances

       

      $

      15.9

       

      $

      5.7

       

      $

       

      $

      15.3

      (2)

      $

      36.9

       

      Property and casualty insurance and reinsurance premiums receivable:

       

       

       

       

       

       

       

       

       

       

       

      Allowance for uncollectible accounts

       

      23.0

       

      (12.1

      )

      3.2

       

      12.9

      (2)

      27.0

       


      (1)

      Represents net reinstatements (charge-offs) of balances receivables.

      (2)

      Includes $17.8 million and $2.2 million of reinsurance recoverable on unpaid losses and property and casualty insurance and reinsurance premiums receivable, respectively, acquired from Sirius.

      FS-6




      SCHEDULE VI

      WHITE MOUNTAINS INSURANCE GROUP, LTD.

      SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS
      (Millions)

      Column A
       Column B
       Column C
       Column D
       Column E
       Column F
       Column G
       Column H
       Column I
       Column J
       Column K
       
        
        
        
        
        
        
       Claims and Claims Adjustment Expenses Incurred Related to
        
        
        
       
        
       Reserves for
      Unpaid Claims
      and Claims
      Adjustment
      Expenses

        
        
        
        
       Amortization
      of deferred
      policy
      acquisition
      costs

        
        
       
        
       Discount, if
      any,
      deducted in
      Column C

        
        
        
       Paid Claims
      and Claims
      Adjustment
      Expenses

        
      Affiliation with registrant

       Deferred
      acquisition
      costs

       Unearned
      Premiums

       Earned
      Premiums

       Net
      investment
      income

       (1)
      Current
      Year

       (2)
      Prior
      Year

       Premiums
      written

      OneBeacon:                                 
       2004 $200.2 $5,475.5 $259.4(2)$1,066.8 $2,378.5 $221.4 $1,444.9 $100.3 $442.3 $2,085.9 $2,459.1
       2003  163.3  6,241.2  294.5(2) 1,035.1  2,160.3  223.7  1,337.2  138.4  394.2  2,284.5  1,972.5
       2002  188.4  7,626.6  299.5(2) 1,265.1  2,870.9  314.0  2,064.8  57.4  629.6  2,870.8  2,522.8

      WM Re:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       
       2004 $99.1 $4,170.3 $58.1(3)$615.5 $1,265.5 $98.5 $903.8 $15.1 $271.8 $910.6 $1,246.3
       2003  67.4  1,777.2    326.3  845.8  50.4  541.7  14.9  198.0  373.8  885.7
       2002  55.8  1,693.9    219.8  635.0  51.5  440.8  10.5  161.2  341.7  688.2

      Esurance:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       
       2004 $8.9 $63.0   $57.2 $176.5 $3.5 $127.5 $(5.1)$29.4 $96.6 $199.4
       2003  1.9  39.1    33.9  99.9  1.3  46.9  34.1  18.8  57.4  116.4
       2002    15.5    17.4  40.8  1.2  36.6    9.7  25.0  53.0

      Other insurance operations:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       
       2004 $ $(310.3) 361.5(4)$ $ $37.5 $ $4.6 $ $(2.2)$
       2003  1.0  (329.3) 413.1(4) 14.1  31.7  15.5  23.1  2.0  4.0  15.0  33.1
       2002  0.7  (460.7) 481.0(4) 12.1  29.7  (0.7) 6.0  22.1  3.8  7.3  29.5

      50%-or-less owned propertyand casualty investees:(1)

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       
       2004 $30.8 $162.8   $144.2 $217.8 $13.2 $144.7 $4.7 $60.0 $132.7 $227.3
       2003  28.2  140.6    132.4  198.0  11.7  127.5  4.4  55.2  119.6  213.8
       2002  24.5  126.7    112.0  167.0  11.5  113.2  7.8  47.6  106.1  178.7

      Column A

       

      Column B

       

      Column C

       

      Column D

       

      Column E

       

      Column F

       

      Column G

       

      Column H

       

      Column I

       

      Column J

       

      Column K

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Claims and 
      Claims

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Adjustment
      Expenses

       

       

       

       

       

       

       

       

       

       

       

      Reserves for
      Unpaid Claims

       

      Discount, if

       

       

       

       

       

       

       

      Incurred
      Related to

       

      Amortization
      of deferred

       

      Paid Claims

       

       

       

       

       

      Deferred

       

      and Claims

       

      any,

       

       

       

       

       

      Net

       

      (1)

       

      (2)

       

      policy

       

      and Claims

       

       

       

       

       

      acquisition

       

      Adjustment

       

      deducted in

       

      Unearned

       

      Earned

       

      investment

       

      Current

       

      Prior

       

      acquisition

       

      Adjustment

       

      Premiums

       

      Affiliation with registrant

       

      costs

       

      Expenses

       

      Column C

       

      Premiums

       

      Premiums

       

      income

       

      Year

       

      Year

       

      costs

       

      Expenses

       

      written

       

      OneBeacon:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      2006

       

      $

      183.8

       

      $

      4,837.7

       

      $

      461.2

      (2)

      $

      985.2

       

      $

      1,944.0

       

      $

      176.1

       

      $

      1,169.0

       

      $

      11.3

       

      $

      332.2

       

      $

      1,553.0

       

      $

      1,957.6

       

      2005

       

      180.1

       

      5,395.9

       

      531.8

      (2)

      960.3

       

      2,118.4

       

      238.1

       

      1,306.5

       

      95.0

       

      390.7

       

      1,839.8

       

      2,121.1

       

      2004

       

      200.2

       

      5,114.0

       

      620.9

      (2)

      1,066.8

       

      2,378.5

       

      222.9

       

      1,444.9

       

      100.3

       

      442.3

       

      2,085.9

       

      2,459.1

       

      WM Re:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      2006

       

      $

      99.8

       

      $

      3,708.8

       

      $

      39.1

      (3)

      $

      431.6

       

      $

      1,241.2

       

      $

      182.7

       

      $

      666.6

       

      $

      218.0

       

      $

      287.2

       

      $

      1,070.9

       

      $

      1,290.0

       

      2005

       

      87.2

       

      4,680.3

       

      39.5

      (3)

      521.9

       

      1,371.6

       

      148.9

       

      1,186.8

       

      51.0

       

      279.6

       

      1,229.7

       

      1,304.1

       

      2004

       

      99.1

       

      4,170.3

       

      48.0

      (3)

      615.5

       

      1,265.5

       

      98.5

       

      903.8

       

      15.1

       

      271.8

       

      910.6

       

      1,246.3

       

      Esurance:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      2006

       

      $

      36.6

       

      $

      167.5

       

      $

       

      $

      168.1

       

      $

      527.5

       

      $

      18.4

       

      $

      380.9

       

      $

      3.0

       

      $

      135.3

       

      $

      309.6

       

      $

      595.9

       

      2005

       

      21.1

       

      94.0

       

       

      99.8

       

      306.8

       

      9.8

       

      213.9

       

      (7.7

      )

      90.8

       

      175.0

       

      349.1

       

      2004

       

      8.9

       

      63.0

       

       

      57.2

       

      176.5

       

      3.5

       

      127.5

       

      (5.1

      )

      30.3

       

      96.6

       

      199.4

       

      Other insurance operations:

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      2006

       

      $

       

      $

      63.2

       

      $

       

      $

       

      $

       

      $

      1.0

       

      $

      3.9

       

      $

       

      $

       

      $

      4.1

       

      $

       

      2005

       

       

      61.1

       

       

       

      1.8

       

      29.4

       

       

      12.6

       

      0.1

       

      6.5

       

      1.8

       

      2004

       

       

      51.2

       

       

       

       

      6.4

       

       

      4.6

       

       

      (2.2

      )

       

      50%-or-less owned property and casualty investees(1):

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      Delos(4):

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      2006

       

      $

      0.2

       

      $

      68.2

       

      $

       

      $

      8.8

       

      $

      2.1

       

      $

      0.4

       

      $

      1.3

       

      $

       

      $

       

      $

      2.1

       

      $

      0.7

       

      MSA(5):

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      2005

       

      31.2

       

      190.2

       

       

      154.5

       

      233.8

       

      13.6

       

      149.3

       

      18.0

       

      62.8

       

      143.9

       

      240.8

       

      2004

       

      30.8

       

      162.8

       

       

      144.2

       

      217.8

       

      13.2

       

      144.7

       

      4.7

       

      60.0

       

      132.7

       

      227.3

       


      (1)

      The amounts shown represent White Mountains'Mountains’ share of MSA, its 50% owned unconsolidated property and casualty insurance affiliate. Excludes White Mountains' share of Montpelier, its 21% owned unconsolidated property and casualty reinsurance affiliate whose information is available publicly.
      affiliates.

      (2)

      The amounts shown represent OneBeacon'sOneBeacon’s discount on its long-term workers compensation loss and LAE reserves, as such liabilities constitute unpaid but settled claims under which the payment pattern and ultimate costs are fixed and determinable on an individual basis. OneBeacon discounts these reserves using a discount rate which is determined based on the facts and circumstances applicable at the time the claims are settled (4.7%(5.3%, 5.0% and 4.7% at December 31, 2004, 20032006, 2005 and 2002)2004).
      (3)
      The amount Also the amounts shown excludesexclude unamortized fair value adjustments to reserves of $10.1 million for unpaid claims and claims adjustment expenses made in purchase accounting as a result of White Mountains'Mountains’ purchase of Sirius during 2004.
      (4)
      OneBeacon for the years ended December 31, 2006, 2005 and 2004, respectively

      (3)            The amountsamount shown excluderepresents unamortized fair value adjustments to reserves of $43.3 million, $48.6 million and $79.8 million for unpaid claims and claims adjustment expenses made in purchase accounting as a result of White Mountains'Mountains’ purchase of OneBeacon for the years ended DecemberSirius during 2004.

      (4)            On August 3, 2006 White Mountains acquired an equity interest of approximately 18% in Delos. See Note 2

      (5)            On October 31, 2004, 2003 and 2002, respectively.

      2006 White Mountains restructured its investment in MSA. See Note 2.

      FS-7