UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K
(Mark One) 
xANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20162017
or
oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                                  to                                 
Commission File Number:    001-31911

American Equity Investment Life Holding Company
(Exact name of registrant as specified in its charter)
Iowa
(State or other jurisdiction of Incorporation)
42-1447959
(I.R.S. Employer Identification No.)
6000 Westown Parkway
West Des Moines, Iowa
(Address of principal executive offices)
50266
(Zip Code)
Registrant's telephone number, including area code:    (515) 221-0002
Securities registered pursuant to Section 12(b) of the Act:
Title of each className of each exchange on which registered
Common stock, par value $1New York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: Common Stock, par value $1
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 15(d) of the 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 x    No o
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x    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 registrant'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. ox
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer"filer," "smaller reporting company," and "smaller reporting"emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer x
Accelerated filer o
Non-accelerated filer o
(Do not check if a smaller
reporting company)
Smaller reporting
company o
Emerging growth company o
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act.) Yes o    No x
Aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant was $1,133,734,418$2,299,993,170 based on the closing price of $14.25$26.28 per share, the closing price of the common stock on the New York Stock Exchange on June 30, 2016.2017.
Shares of common stock outstanding as of February 22, 2017: 88,279,84521, 2018: 89,880,222
Documents incorporated by reference: Portions of the registrant's definitive proxy statement for the annual meeting of shareholders to be held June 1, 2017,7, 2018, which will be filed within 120 days after December 31, 2016,2017, are incorporated by reference into Part III of this report.

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY
FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 20162017
TABLE OF CONTENTS
 
 
 
 
 
Exhibit 12.1Ratio of Earnings to Fixed Charges 
Exhibit 21.2Subsidiaries of American Equity Investment Life Holding Company 
Exhibit 23.1Consent of Independent Registered Public Accounting Firm 
Exhibit 31.1Certification 
Exhibit 31.2Certification 
Exhibit 32.1Certification 
Exhibit 32.2Certification 


PART I

Item 1.    Business
Introduction
We are a leader in the development and sale of fixed index and fixed rate annuity products. We were incorporated in the state of Iowa on December 15, 1995. We issue fixed annuity and life insurance products through our wholly-owned life insurance subsidiaries, American Equity Investment Life Insurance Company ("American Equity Life"), American Equity Investment Life Insurance Company of New York and Eagle Life Insurance Company ("Eagle Life"). We have one business segment which represents our core business comprised of the sale of fixed index and fixed rate annuities. Our business strategy is focused on growing our policyholder funds and earning predictable returns by managing investment spreads and investment risk. We are licensed to sell our products in 50 states and the District of Columbia. Throughout this report, unless otherwise specified or the context otherwise requires, all references to "American Equity", the "Company", "we", "our" and similar references are to American Equity Investment Life Holding Company and its consolidated subsidiaries.
Investor related information, including periodic reports filed on Forms 10-K, 10-Q and 8-K and any amendments may be found on our internet website at www.american-equity.com as soon as reasonably practicable after such reports are filed with the Securities and Exchange Commission ("SEC"). In addition, we have available on our website our: (i) code of business conduct and ethics; (ii) audit committee charter; (iii) compensation committee charter; (iv) nominating and corporate governance committee charter and (v) corporate governance guidelines. The information incorporated herein by reference is also electronically accessible from the SEC's website at www.sec.gov.
Annuity Market Overview
Our target market includes the group of individuals ages 45-75 who are seeking to accumulate tax-deferred savings or create guaranteed lifetime income. We believe that significant growth opportunities exist for annuity products because of favorable demographic and economic trends. According to the U.S. Census Bureau, there were approximately 39 million Americans age 65 and older in 2010, representing 13% of the U.S. population and this group has grown to 44.749.2 million in 2013.2016. By 2030, this sector of the population is expected to increase to 20% of the total population. Our fixed index and fixed rate annuity products are particularly attractive to this group due to their principal protection, competitive rates of credited interest, tax-deferred growth, guaranteed lifetime income and alternative payout options. Our competitive fixed index and fixed rate annuity products have enabled us to enjoy favorable growth in recent years and since our formation.
According to Wink's Sales and Market Report published by Wink, Inc., total industry sales of fixed index annuities increased 19.8%decreased 10.0% to $40.4 billion for the first three quarters of 2017 from $44.9 billion for the first three quarters of 2016 from $37.5 billion for the first three quarters of 2015.2016. Total industry sales of fixed index annuities have increased 64%71% over the five yearfive-year period from 20102011 to 20152016 (data provided in the following table according to Wink's Sales and Market Report published by Wink, Inc.), which we believe is attributable to more Americans reaching retirement age and seeking products that will provide principal protection and guaranteed lifetime income.
For the Year Ended December 31,For the Year Ended December 31,
2015 2014 2013 2012 20112016 2015 2014 2013 2012
(Dollars in thousands)(Dollars in thousands)
Total industry sales of fixed index annuities$53,069,850
 $46,896,350
 $38,646,864
 $33,975,442
 $32,387,045
$58,235,265
 $53,069,850
 $46,896,350
 $38,646,864
 $33,975,442
Increase from prior year6,173,500
 8,249,486
 4,671,422
 1,588,397
 41,481
5,165,415
 6,173,500
 8,249,486
 4,671,422
 1,588,397
Increase from prior year13.2% 21.3% 13.7% 4.9% 0.1%9.7% 13.2% 21.3% 13.7% 4.9%
Strategy
Key elements of executing our strategy include the following:
Expand and Enhance our Distribution Network.  We currently distribute through a number ofseveral distribution channels, including independent agents, broker/dealers, banks and registered investment advisors. American Equity Life has relationships with approximately 3532 national marketing organizations, through which nearly 25,000more than 23,000 independent agents are under contract. Eagle Life has relationships with 9 wholesale distribution partners, though which there are 58 selling agreements and nearly 6,000 representatives. Fourteen of these selling agreements are with broker/dealers affiliated with banks. Our objective is to improve the productivity and efficiency of our independent agent distribution channel by focusing our marketing and recruiting efforts on those independent agents capable of selling $1 million or more of annuity premium annually. We will also be alert for opportunities to establish relationships with successful national marketing organizations and agents not presently associated with us. We continue to grow distribution through broker/dealers, banks and registered investment advisors. According to Wink's Sales and Market Report published by Wink, Inc., sales of fixed index annuities through broker/dealers and banks represented almost 35% of industry sales in the third quarter of 2016.2017. Eagle Life is focused solely on the broker/dealer, bank and registered investment advisor channel and is developing a network of broker/dealers, banks and registered investment advisors that have the ability to distribute fixed index and fixed rate annuity products in large volume. We also offer broker/dealer and bank friendly products for those broker/dealers and banks that choose to associate with us through American Equity Life. We continue to strive to provide all of our distribution partners with the highest quality service possible.

Continue to Introduce Innovative and Competitive Products.  We intend to be at the forefront of the fixed index and fixed rate annuity industry in developing and introducing innovative and competitive products. We were one of the first companies to offer a fixed index annuity that allows a choice among interest crediting strategies including both equity and bond indices as well as a traditional fixed rate strategy. We were one of the first companies to include a lifetime income benefit rider with our fixed index annuities and first to have a lifetime income benefit rider with gender-based income payments. We believe that our continued focus on anticipating and being responsive to the product needs of the ever-growing population of retirees will lead to increased customer loyalty, revenues and profitability.
Use our Expertise to Achieve Targeted Spreads on Annuity Products.  We have had a successful track record in achieving the targeted spreads on our annuity products. This historical success has been challenged in the current extended low interest rate environment. However, we intend to continue to leverage our experience and expertise in managing the investment spread during a range of interest rate environments to achieve, or work towards achieving, our targeted spreads.
Maintain our Profitability Focus and Improve Operating Efficiency.  We are committed to improving our profitability by advancing the scope and sophistication of our investment management and spread capabilities and continuously seeking out efficiencies within our operations. The expanded use of technological resources will continue to allow us to improve our processes, scalability and response times.
Take Advantage of the Growing Popularity of Index Products.  We believe that the growing popularity of fixed index annuity products that allow equity and bond market participation without the risk of loss of the premium deposit presents an attractive opportunity to grow our business. The popularity of fixed index annuity products has increased in recent years with the availability of lifetime income benefit riders that provide an attractive alternative for converting accumulated retirement savings into lifetime income. We intend to capitalize on our reputation as a leading provider of fixed index annuities in this expanding segment of the annuity market.
Focus on High Quality Service to Agents and Policyholders.  We have maintained high quality personal service as one of our highest priorities since theour inception of our company and continue to strive for an unprecedented level of timely and accurate service to both our agents and policyholders. Examples of our high quality service include a live person answering phone calls and issuing policies within 24 hours of receiving the application if the paperwork is in good order. We believe high quality service is one of our strongest competitive advantages.
Be Proactive in the Changing Regulatory Environment. We have been a strong and vocal defender of our products and our industry through continued regulatory challenges and have long been an advocate for appropriate regulation. We intend to remain flexible and responsive to the ever changing regulatory environment and will continue to engage with our key regulators to ensure policyholder protections are in place and adequate while permitting continued access to our much needed retirement products.
Products
Annuities offer our policyholders a tax-deferred means of accumulating retirement savings, as well as a reliable source of income during the payout period. When our policyholders deposit cash to annuities, we account for these receipts as policy benefit reserves in the liability section of our consolidated balance sheet. The annuity deposits collected, by product type, during the three most recent fiscal years are as follows:
 Year Ended December 31, Year Ended December 31,
 2016 2015 2014 2017 2016 2015
Product Type 
Deposits
Collected
 
Deposits
as a % of
Total
 
Deposits
Collected
 
Deposits
as a % of
Total
 
Deposits
Collected
 
Deposits
as a % of
Total
 
Deposits
Collected
 
Deposits
as a % of
Total
 
Deposits
Collected
 
Deposits
as a % of
Total
 
Deposits
Collected
 
Deposits
as a % of
Total
 (Dollars in thousands) (Dollars in thousands)
Fixed index annuities $5,724,758
 80% $6,791,689
 96% $3,999,439
 96% $3,966,839
 95 % 5,724,758
 80% $6,791,689
 96%
Annual reset fixed rate annuities 64,317
 1% 45,182
 1% 57,273
 1% 74,829
 2 % 64,317
 1% 45,182
 1%
Multi-year fixed rate annuities 1,303,273
 18% 214,356
 3% 103,293
 2% 110,596
 3 % 1,303,273
 18% 214,356
 3%
Single premium immediate annuities 35,851
 1% 32,752
 % 24,580
 1% 24,946
  % 35,851
 1% 32,752
 %
 $7,128,199
 100% $7,083,979
 100% $4,184,585
 100% $4,177,210
 100 % $7,128,199
 100% $7,083,979
 100%
Fixed Index Annuities
Fixed index annuities allow policyholders to earn index credits based on the performance of a particular index without the risk of loss of their principal. Most of these products allow policyholders to transfer funds once a year among several different crediting strategies, including one or more index based strategies and a traditional fixed rate strategy. ApproximatelyBonus products represented 87%, 88%, 89% and 89% of our fixed indexnet annuity sales for the years endedaccount values at December 31, 2017, 2016 and 2015, and 2014, respectively, were "premium bonus" products.respectively. The initial annuity deposit on these policies is increased at issuance by a specified premium bonus ranging from 3% to 10%. Generally, the surrender charge and bonus vesting provisions of our policies are structured such that we have comparable protection from early termination between bonus and non-bonus products.

The annuity contract value is equal to the sum of premiums paid, premium bonuses and interest credited ("index credits" for funds allocated to an index based strategy), which is based upon an overall limit (or "cap") or a percentage (the "participation rate") of the annual appreciation (based in certain situations on monthly averages or monthly point-to-point calculations) in a recognized index or benchmark. Caps and participation rates limit the amount of annual interest the policyholder may earn in any one contract year and may be adjusted by us annually subject to stated minimums. Caps generally range from 1% to 12% and participation rates range from 10% to 100%. In addition, some products have a spread or "asset fee" generally ranging from 0.75% to 4.0%4%, which is deducted from annual interest to be credited. For products with asset fees, if the annual appreciation in the index does not exceed the asset fee, the policyholder's index credit is zero. The minimum guaranteed surrender values are equal to no less than 87.5% of the premium collected plus interest credited at an annual rate ranging from 1% to 3%.
The initial caps and participation rates are largely a function of the cost of the call options we purchase to fund the annual index credits, the interest rate we can earn on invested assets acquired with new annuity deposits and the rates offered on similar products by our competitors. For subsequent adjustments to caps and participation rates, we take into account the cost of the call options we purchase to fund the annual index credits, yield on our investment portfolio, annuity surrender and withdrawal assumptions and crediting rate history for particular groups of annuity policies with similar characteristics.
Fixed Rate Annuities
Fixed rate deferred annuities include annual reset and multi-year rate guaranteed products. Our annual reset fixed rate annuities have an annual interest rate (the "crediting rate") that is guaranteed for the first policy year. After the first policy year, we have the discretionary ability to change the crediting rate once annually to any rate at or above a guaranteed minimum rate. Our multi-year rate guaranteed annuities are similar to our annual reset products except that the initial crediting rate is guaranteed for up to seven years before it may be changed at our discretion. The minimum guaranteed rate on our annual reset fixed rate deferred annuities ranges from 1% to 4% and the initial guaranteed rate on our multi-year rate guaranteed policies ranges from 1.7% to 3.75%3.3%.
The initial crediting rate is largely a function of the interest rate we can earn on invested assets acquired with new annuity deposits and the rates offered on similar products by our competitors. For subsequent adjustments to crediting rates, we take into account the yield on our investment portfolio, annuity surrender and withdrawal assumptions and crediting rate history for particular groups of annuity policies with similar characteristics. As of December 31, 2016,2017, crediting rates on our outstanding fixed rate deferred annuities generally ranged from 1.0% to 4.0%. The average crediting rates on our outstanding annual reset and multi-year rate guaranteed fixed rate deferred annuities at December 31, 20162017 were 1.99%1.87% and 2.74%2.72%, respectively.
We also sell single premium immediate annuities ("SPIAs"). Our SPIAs are designed to provide a series of periodic payments for a fixed period of time or for life, according to the policyholder's choice at the time of issue. The amounts, frequency and length of time of the payments are fixed at the outset of the annuity contract. SPIAs are often purchased by persons at or near retirement age who desire a steady stream of payments over a future period of years. The implicit interest rate on SPIAs is based on market conditions when the policy is issued. The implicit interest rate on our outstanding SPIAs averaged 2.61% at December 31, 2016.
Withdrawal Options—Fixed Index and Fixed Rate Annuities
Policyholders are typically permitted penalty-free withdrawals up to 10% of the contract value in each year after the first year, subject to limitations. Withdrawals in excess of allowable penalty-free amounts are assessed a surrender charge during a penalty period which ranges from 6 to 17 years for fixed index annuities and 5 to 15 years for fixed rate annuities from the date the policy is issued. This surrender charge initially ranges from 7% to 20% for fixed index annuities and 8% to 20% for fixed rate annuities of the contract value and generally decreases by approximately one-half to two percentage points per year during the surrender charge period. For certain policies, the premium bonus is considered in the establishment of the surrender charge percentages. For other policies, there is a vesting schedule ranging from 10 to 14 years that applies to the premium bonus and any interest earned on that premium bonus. Surrender charges and bonus vesting are set at levels aimed at protecting us from loss on early terminations and reducing the likelihood of policyholders terminating their policies during periods of increasing interest rates. This practice enhances our ability to maintain profitability on such policies. Policyholders may elect to take the proceeds of the annuity either in a single payment or in a series of payments for life, for a fixed number of years or a combination of these payment options. Information on surrender charge protection and net account values are as follows:
 For the Year Ended December 31, December 31,
 2016 2015 2014 2017 2016 2015
 (Dollars in thousands) (Dollars in thousands)
Annuity Surrender Charges:            
Average years at issue 13.5 13.7 13.8 13.4 13.5 13.7
Average years remaining 8.6 9.1 9.2 8.1 8.6 9.1
Average surrender charge percentage remaining 13.8% 14.3% 14.7% 13.0% 13.8% 14.3%
Annuity Account Value (net of coinsurance) $45,204,015
 $41,249,647
 $35,363,041
 $48,400,755
 $45,204,015
 $41,249,647

Beginning in July 2007, substantially all of our fixed index annuity policies and many of our annual reset fixed rate deferred annuities were issued with a lifetime income benefit rider. This rider provides an additional liquidity option to policyholders. With the lifetime income benefit rider, a policyholder can elect to receive guaranteed payments for life from their contract without requiring them to annuitize their contract value. The amount of the livinglifetime income benefit available is determined by the growth in the policy's income account value as defined in the rider (3.0% to 8.0%), which is selected by the policyholder at the time of purchase, and the policyholder's age at the time the policyholder elects to begin receiving livinglifetime income benefit payments. The growth in the policy's income account value is based on the growth rate specified in the policy which ranges from 3% to 8% and the time period over which that growth rate is applied which ranges from 5 to 20 years. Generally, the time period consists of an initial period of up to 10 years and the policyholder has the option to elect to continue the time period for an additional period of up to 10 years. We have the option to increase the rider fee at the time the policyholder elects to continue the time period. Lifetime income benefit payments may be stopped and restarted at the election of the policyholder. During 2013, we introduced new versions of our lifetime income benefit rider that had an optional wellbeing benefit or optional death benefit. Policyholders have the choice of selecting a rider with a base level of benefit for no explicit fee or paying a fee for a rider that has a higher level of benefits, and beginning in 2013 we introduced products where the addition of a rider to the policy is completely optional. Rider fees range from 0.30% to 1.00% of the policy's account value. The additional value to the policyholder provided by this rider through the income account value.

Life Insurance
These products include traditional ordinaryvalue is not transferable to other contracts and term, universal life and other interest-sensitive life insurance products. We have approximately $2.0 billionwe believe will improve the persistency of life insurance in force as of December 31, 2016. Premiums related to this business accounted for less than 1% of revenues for the years ended December 31, 2016, 2015 and 2014.contract.
Investments/Spread Management
Investment activities are an integral part of our business, and net investment income is a significant component of our total revenues. Profitability of our annuity products is significantly affected by spreads between interest yields on investments, the cost of options to fund the annual index credits on our fixed index annuities and rates credited on our fixed rate annuities and the fixed rate strategy in our fixed index annuities. We manage the index-based risk component of our fixed index annuities by purchasing call options on the applicable indices to fund the annual index credits on these annuities and by adjusting the caps, participation rates and asset fees on policy anniversary dates to reflect the change in the cost of such options which varies based on market conditions. All options are purchased on the respective policy anniversary dates, and new options are purchased on each of the anniversary dates to fund the next annual index credits. All credited rates on annual reset fixed rate deferred annuities and the fixed rate strategy in fixed index annuities may be changed annually, subject to minimum guarantees. Changes in caps, participation rates and asset fees on fixed index annuities and crediting rates on fixed rate and fixed index annuities may not be sufficient to maintain targeted investment spreads in all economic and market environments. In addition, competition and other factors, including the potential for increases in surrenders and withdrawals, may limit our ability to adjust or to maintain caps, participation rates, asset fees and crediting rates at levels necessary to avoid narrowing of spreads under certain market conditions.
For additional information regarding the composition of our investment portfolio and our interest rate risk management, see Management's Discussion and Analysis of Financial Condition and Results of Operations—Financial Condition—Investments, Quantitative and Qualitative Disclosures About Market Risk and Note 3 to our audited consolidated financial statements.
Marketing/Distribution
We market our products through a variable cost distribution network, including independent agents through national marketing organizations, broker/dealers, banks and registered investment advisors. We emphasize high quality service to our agents, distribution partners and policyholders along with the prompt payment of commissions to our agents.agents and distribution partners. We believe this has been significant in building excellent relationships with our distribution network.
Our independent agents and agencies range in profile from national sales organizations to personal producing general agents. We actively recruit new agents and terminate those agents who have not produced business for us in recent periods and are unlikely to sell our products in the future. In our recruitment efforts, we emphasize that agents have direct access to our executive officers,senior leadership, giving us an edge in recruiting over larger and foreign-owned competitors. We also emphasize our products, service and our focused fixed rate and fixed index annuity expertise. We also have favorable relationships with our national marketing organizations, which have enabled us to efficiently sell through an expanded number of independent agents.
The independent agent distribution system is comprised of insurance brokers and marketing organizations. We are pursuing a strategy to increase the efficiency of our independent agent distribution network by strengthening our relationships with key national and regional marketing organizations and are alert for opportunities to establish relationships with organizations not presently associated with us. These organizations typically recruit agents for us by advertising our products and our commission structure through direct mail advertising or seminars for insurance agents and brokers. These organizations bear most of the cost incurred in marketing our products. We compensate marketing organizations by paying them a percentage of the commissions earned on new annuity policy sales generated by the agents recruited by such organizations. We also conduct incentive programs for marketing organizations and agents from time to time. We generally do not enter into exclusive arrangements with these marketing organizations.
Agents contracted with us through two national marketing organizations accounted for more than 29%24% of the annuity deposits and insurance premiums collected during 20162017 by American Equity Life, and we expect these organizations to continue as marketers for American Equity Life with a focus on selling our products. The states with the largest share of direct premium collected during 20162017 were: Florida (9.6%(7.9%), Texas (7.1%), California (8.6%), Texas (7.2%(6.1%), Pennsylvania (6.1%(5.9%) and North Carolina (5.3%(5.6%).
Eagle Life's fixed index and fixed rate annuities are distributed pursuant to selling agreements with the applicable broker/dealers, banks and registered investment advisors. Relationships with these firms are facilitated by wholesalers who promote Eagle Life and are compensated based upon the sales of the firms that they have contracted with Eagle Life. At December 31, 2016, we had 53 selling agreements in place with broker/dealers. Fourteen of these selling agreements are with broker/dealers affiliated with banks. American Equity Life to a lesser extent also is sellingsells through broker/dealers and we have introduced products specifically for this distribution channel.

Competition and Ratings
We operate in a highly competitive industry. Our annuity products compete with fixed index, fixed rate and variable annuities sold by other insurance companies and also with mutual fund products, traditional bank products and other investment and retirement funding alternatives offered by asset managers, banks, and broker/dealers. Our insurance products compete with products of other insurance companies, financial intermediaries and other institutions based on a number of features, including crediting rates, index options, policy terms and conditions, service provided to distribution channels and policyholders, ratings, reputation and distributor compensation.

The sales agents for our products use the ratings assigned to an insurer by independent rating agencies as one factor in determining which insurer's annuity to market. The degree to which ratings adjustments have affected and will affect our sales and persistency is unknown. Following is a summary of American Equity Life's financial strength ratings:
 Financial Strength Rating Outlook Statement
A.M. Best Company   
January 2011—2011 - currentA- Stable
Standard & Poor's   
August 2015—2015 - currentA- Stable
June 2013—2013 - August 2015BBB+ Positive
October 2011—2011 - June 2013BBB+ Stable
Fitch Ratings   
May 2013—2013 - CurrentBBB+ Stable
Financial strength ratings generally involve quantitative and qualitative evaluations by rating agencies of a company's financial condition and operating performance. Generally, rating agencies base their ratings upon information furnished to them by the insurer and upon their own investigations, studies and assumptions. Ratings are based upon factors of concern to policyholders, agents and intermediaries and are not directed toward the protection of investors and are not recommendations to buy, sell or hold securities.
In addition to the financial strength ratings, rating agencies use an "outlook statement" to indicate a medium or long-term trend which, if continued, may lead to a rating change. A positive outlook indicates a rating may be raised and a negative outlook indicates a rating may be lowered. A stable outlook is assigned when ratings are not likely to be changed. Outlook statements should not be confused with expected stability of the insurer's financial or economic performance. A rating may have a "stable" outlook to indicate that the rating is not expected to change, but a "stable" outlook does not preclude a rating agency from changing a rating at any time without notice.
In December 2016,2017, A.M. Best changedaffirmed its rating outlook on the U.S. life/annuity sector from stable to negative citing increased volatility across economicas 'negative', reflecting its view that factors including a flattening yield curve, low treasury yields, declining annuity sales and evolving regulatory fronts, which includes continuing interest rate pressures.issues could negatively impact the U.S. life/annuity sector. In January 2016, Standard & Poor's affirmedDecember 2017, Fitch changed its outlook on the U.S. life insurance sector to 'stable' from 'negative', reflecting its view that better than expected operating performance and a benign credit environment are likely to continue into 2018. In January 2018, Standard & Poor affirmed its rating outlook on the U.S. life insurance sector as stable. The rating agencies have heightened'stable', reflecting its view that insurers continue to exhibit strong balance sheet fundamentals and good earnings and liquidity, partially mitigating concerns over evolving issues that could negatively impact the level of scrutiny they apply toU.S. life insurance companies, increased the frequency and scope of their credit reviews and may adjust upward the capital and other requirements employed in the rating agency models for maintenance of certain ratings levels.sector.
A.M. Best Company ratings currently range from "A++" (Superior) to "F" (In Liquidation), and include 16 separate ratings categories. Within these categories, "A++" (Superior) and "A+" (Superior) are the highest, followed by "A" (Excellent) and "A-" (Excellent) then followed by "B++" (Good) and "B+" (Good). Publications of A.M. Best Company indicate that the "A-" rating is assigned to those companies that, in A.M. Best Company's opinion, have demonstrated an excellent ability to meet their ongoing obligations to policyholders.
Standard & Poor's insurer financial strength ratings currently range from "AAA (extremely strong)" to "R (under regulatory supervision)", and include 21 separate ratings categories, while "NR" indicates that Standard & Poor's has no opinion about the insurer's financial strength. Within these categories, "AAA" and "AA" are the highest, followed by "A" and "BBB". Publications of Standard & Poor's indicate that an insurer rated "A-" is regarded as having strong financial security characteristics, but is somewhat more likely to be affected by adverse business conditions than are higher rated insurers.
Fitch Rating's insurer financial strength ratings currently range from "AAA (exceptionally strong)" to "C (distressed)." Ratings of "BBB-" and higher are considered to be "secure," and those of "BB+" and lower are considered to be "vulnerable."
A.M. Best Company, Standard & Poor's and Fitch review their ratings of insurance companies from time to time. There can be no assurance that any particular rating will continue for any given period of time or that it will not be changed or withdrawn entirely if, in their judgment, circumstances so warrant. If our ratings were to be negatively adjusted for any reason, we could experience a material decline in the sales of our products and the persistency of our existing business, as well as an increase in the cost of debt or equity financing.

Reinsurance
We follow the industry practice of reinsuring a portion of our annuity risks with unaffiliated reinsurers. Our reinsurance agreements play a part in managing our regulatory capital.
Coinsurance
American Equity Life has three coinsurance agreements with Athene Life Re Ltd. ("Athene"), an unauthorized life reinsurer domiciled in Bermuda. One agreement ceded 20% of certain of American Equity Life's fixed index annuities issued from January 1, 2009 through March 31, 2010. The business reinsured under this agreement is notno longer eligible for recapture until the end of the month following seven years after the date of issuance of the policy.recapture. The second agreement ceded 80% of American Equity Life's multi-year rate guaranteed annuities issued from July 1, 2009 through December 31, 2013 and 80% of Eagle Life's multi-year rate guaranteed annuities issued from November 20, 2013 through December 31, 2013. The business reinsured under this agreement may not be recaptured. The third agreement cedes 80% of American Equity Life's and Eagle Life's multi-year rate guaranteed annuities issued on or after January 1, 2014, 80% of Eagle Life's fixed index annuities issued on or afterprior to January 1, 20142017, 50% of Eagle Life's fixed index annuities issued from January 1, 2017 through December 31, 2018 and 80% of certain of American Equity Life's fixed index annuities issued from August 1, 2016 through December 31, 2016. The reinsurance agreement specifies that the coinsurance percentage for Eagle Life's fixed index annuities decreases to 50% for policies issued between January 1, 2017 and December 31, 2018, and to 20% for policies issued on or after January 1, 2019. The business reinsured under this agreement may not be recaptured. American Equity Life is an intermediary for reinsurance of Eagle Life's business ceded to Athene. American Equity Life and Eagle Life remain liable to policyholders with respect to the policy liabilities ceded to Athene should Athene fail to meet the obligations it has coinsured. The annuity deposits that have been ceded to Athene are held in trusts and American Equity Life is named as the sole beneficiary of the trusts. The assets in the trusts are required to remain at a value that is sufficient to support the current balance of policy benefit liabilities of the ceded business on a statutory basis. If the value of the trust accounts would ever be less than the amount of the ceded policy benefit liabilities on a statutory basis, Athene is required to either establish a letter of credit or deposit securities in the trusts for the amount of any shortfall. Athene has received a financial strength rating of "A" (Excellent) with a stable outlook from A.M. Best Company. None of the coinsurance deposits with Athene are deemed by management to be uncollectible.
American Equity Life has two coinsurance agreements with EquiTrust Life Insurance Company ("EquiTrust"), covering 70% of certain of American Equity Life's fixed index and fixed rate annuities issued from August 1, 2001 through December 31, 2001, 40% of those contracts issued during 2002 and 2003, and 20% of those contracts issued from January 1, 2004 to July 31, 2004. The business reinsured under these agreements may not be recaptured. We remain liable to policyholders with respect to the policy liabilities ceded to EquiTrust should EquiTrust fail to meet the obligations it has coinsured. EquiTrust has received a financial strength rating of "B++" (Good) with a stable outlook from A.M. Best Company. None of the coinsurance deposits with EquiTrust are deemed by management to be uncollectible.
Financing Arrangements
American Equity Life has a reinsurance agreement with Hannover Life Reassurance Company of America, ("Hannover"), which is treated as reinsurance under statutory accounting practices and as a financing arrangement under U.S. generally accepted accounting principles ("GAAP"). The statutory surplus benefit under this agreement is eliminated under GAAP and the associated charges are recorded as risk charges and included in other operating costs and expenses in the consolidated statements of operations. The agreement became effective July 1, 2013 and is a yearly renewable term reinsurance agreement for statutory purposes covering 45.6% of waived surrender charges related to penalty free withdrawals, deaths and lifetime income benefit rider payments as well as lifetime income benefit rider payments in excess of policy fund values on certain business. We may recapture the risks reinsured under this agreement as of the end of any quarter after December 31, 2020 and the agreement, as amended, makes it punitive to us if we do not recapture the business ceded by the first quarter of 2021.
Indemnity Reinsurance
Consistent with the general practice of the life insurance industry, American Equity Life enters into agreements of indemnity reinsurance with other insurance companies in order to reinsure portions of the coverage provided by its annuity, life and accident and health insurance products. Indemnity reinsurance agreements are intended to limit a life insurer's maximum loss on a large or unusually hazardous risk or to diversify its risks. Indemnity reinsurance does not discharge the original insurer's primary liability to the insured.
The maximum loss retained by us on any one life insurance policy we have issued was $0.1 million or less as of December 31, 2016. American Equity Life's reinsured business under indemnity reinsurance agreements is primarily ceded to two reinsurers. Reinsurance related to life and accident and health insurance that was ceded by us to these reinsurers was immaterial.
We believe the assuming companies will be able to honor all contractual commitments, based on our periodic review of their financial statements, insurance industry reports and reports filed with state insurance departments.
For more information regarding reinsurance, see Note 7 to our audited consolidated financial statements. For risks involving reinsurance see "Item 1A. Risk Factors - Our reinsurance program involves risks because we remain liable with respect to the liabilities ceded to reinsurers if the reinsurers fail to meet the obligations assumed by them.Factors."

Regulation
Life insurance companies are subject to regulation and supervision by the states in which they transact business. State insurance laws establish supervisory agencies with broad regulatory authority, including the power to:
grant and revoke licenses to transact business;
regulate and supervise trade practices and market conduct;
establish guaranty associations;
license agents;
approve policy forms;
approve premium rates for some lines of business;
establish reserve requirements;
prescribe the form and content of required financial statements and reports;
determine the reasonableness and adequacy of statutory capital and surplus;
perform financial, market conduct and other examinations;
define acceptable accounting principles for statutory reporting;
regulate the type and amount of permitted investments; and
limit the amount of dividends and surplus note payments that can be paid without obtaining regulatory approval.

Our life subsidiaries are subject to periodic examinations by state regulatory authorities. In 2015, the Iowa Insurance Division completed financial examinations of American Equity Life and Eagle Life for the five yearfive-year period ending December 31, 2013. There were no adjustments to American Equity Life's or Eagle Life's statutory financial statements as a result of these examinations. TheIn 2017, the New York Insurance Department is currently conducting acompleted its financial examination of American Equity Investment Life Insurance Company of New York for the three yearthree-year period ending December 31, 2013. There were no adjustments to American Equity Investment Life Insurance Company of New York's statutory financial statements as a result of this examination.
The payment of dividends or the distributions, including surplus note payments, by our life subsidiaries is subject to regulation by each subsidiary's state of domicile's insurance department. Currently, American Equity Life may pay dividends or make other distributions without the prior approval of the Iowa Insurance Commissioner, unless such payments, together with all other such payments within the preceding twelve months, exceed the greater of (1) American Equity Life's statutory net gain from operations for the preceding calendar year, or (2) 10% of American Equity Life's statutory surplus at the preceding December 31. For 2017,2018, up to $272.7$377.1 million can be distributed as dividends by American Equity Life without prior approval of the Iowa Insurance Commissioner. In addition, dividends and surplus note payments may be made only out of earned surplus, and all surplus note payments are subject to prior approval by regulatory authorities. American Equity Life had $1.4$1.7 billion of statutory earned surplus at December 31, 2016.2017.
Most states have also enacted regulations on the activities of insurance holding company systems, including acquisitions, extraordinary dividends, the terms of surplus notes, the terms of affiliate transactions and other related matters. We are registered pursuant to such legislation in Iowa. A number of state legislatures have also considered or have enacted legislative proposals that alter and, in many cases, increase the authority of state agencies to regulate insurance companies and holding company systems.
Most states, including Iowa and New York where our life subsidiaries are domiciled, have enacted legislation or adopted administrative regulations affecting the acquisition of control of insurance companies as well as transactions between insurance companies and persons controlling them. The nature and extent of such legislation and regulations currently in effect vary from state to state. However, most states require administrative approval of the direct or indirect acquisition of 10% or more of the outstanding voting securities of an insurance company incorporated in the state. The acquisition of 10% of such securities is generally deemed to be the acquisition of "control" for the purpose of the holding company statutes and requires not only the filing of detailed information concerning the acquiring parties and the plan of acquisition, but also administrative approval prior to the acquisition. In many states, the insurance authority may find that "control" in fact does not exist in circumstances in which a person owns or controls more than 10% of the voting securities.
Historically, the federal government has not directly regulated the business of insurance. However, federal legislation and administrative policies in several areas, including pension regulation, age and sex discrimination, financial services regulation, securities regulation and federal taxation can significantly affect the insurance business. Additionally, the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the "Dodd-Frank Act") generally provides for enhanced federal supervision of financial institutions, including insurance companies in certain circumstances, and financial activities that represent a systemic risk to financial stability or the U.S. economy. Under the Dodd-Frank Act, a Federal Insurance Office has been established within the U.S. Treasury Department to monitor all aspects of the insurance industry and its authority may extend to our business, although the Federal Insurance Office is not empowered with any general regulatory authority over insurers. The director of the Federal Insurance Office serves in an advisory capacity to the Financial Stability Oversight Council ("FSOC") and has the ability to recommend that an insurance company be subject to heightened prudential standards by the Federal Reserve, if it is determined that financial distress at the company could pose a threat to financial stability in the U.S. The Dodd-Frank Act also provides for the preemption of state laws when inconsistent with certain international agreements..
On April 6, 2016, the U.S. Department of Labor (“DOL”) released a final regulation which substantially expands the range of activities that will be considered to be fiduciary advice under the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code of 1986. IfAs released, the final regulation is not overturned by pending lawsuits or otherwise delayed, repealed or revised,provided for a phased implementation is scheduled to phase in beginning April 10, 2017. The success2017, with full implementation by January 1, 2018. On April 7, 2017, the DOL issued a final rule delaying the applicability date of efforts to overturn, delay, repeal or revise the regulation cannot be predicted. We believe it could materially impact our business and have an adverse effect on sales of annuity products to individual retirement account (“IRAs”) holders, particularly index annuity products sold in the independent insurance agent distribution channel. A significant portion of our annuity sales are to IRAs.related exemptions. The new regulation deems advisors, including independent insurance agents, who sell fixed index annuities to IRAs, IRA rollovers or 401(k) plans fiduciariesdefinition of fiduciary and

prohibits them from receiving compensation unless they comply with a prohibited transaction exemption. Although the precise impactimpartial conduct standards became effective on June 9, 2017. Following the issuance of thean additional final regulation is difficult to assess,rule on November 29, 2017, compliance with the remaining conditions and related exemptions is not required until July 1, 2019. Insurance agents are permitted to rely on Prohibited Transaction Exemption 84-24 until July 1, 2019 for all annuity sales. Additionally, the DOL issued a temporary enforcement policy covering the transition period between June 9, 2017 and July 1, 2019, during which the DOL will not pursue claims against advisers who are working diligently and in good faith to comply with their fiduciary duties and the conditions of the prohibited transaction exemptions will likely result in increased regulatory burdens, decreases in sales,exemptions. Additional changes to our compensation practices and product offerings and increased litigation risk, which could negatively impact our business, results of operations or financial condition.the regulation’s requirement are possible prior to full implementation on July 1, 2019.
State insurance regulators and the National Association of Insurance Commissioners ("NAIC") are continually reexamining existing laws and regulations and developing new legislation for passage by state legislatures and new regulations for adoption by insurance authorities. Proposed laws and regulations or those still under development pertain to insurer solvency and market conduct and in recent years have focused on:
insurance company investments;
risk-based capital ("RBC") guidelines, which consist of regulatory targeted surplus levels based on the relationship of statutory capital and surplus, with prescribed adjustments, to the sum of stated percentages of each element of a specified list of company risk exposures;
suitability/best interest standard;
the implementation of non-statutory guidelines and the circumstances under which dividends may be paid;
principles-based reserving;
own risk solvency and enterprise risk management assessment;
cybersecurity assessments;
product approvals;
agent licensing;
underwriting and suitability practices; and
life insurance and annuity sales practices.

The NAIC's RBC requirements are intended to be used by insurance regulators as an early warning tool to identify deteriorating or weakly capitalized insurance companies for the purpose of initiating regulatory action. The RBC formula defines a minimum capital standard which supplements low, fixed minimum capital and surplus requirements previously implemented on a state-by-state basis. Such requirements are not designed as a ranking mechanism for adequately capitalized companies.
The NAIC's RBC requirements provide for four levels of regulatory attention depending on the ratio of a company's total adjusted capital to its RBC. Adjusted capital is defined as the total of statutory capital and surplus, asset valuation reserve and certain other adjustments. Calculations using the NAIC formula at December 31, 2016,2017, indicated that American Equity Life's ratio of total adjusted capital to the highest level at which regulatory action might be initiated was 342%378%.
Our life subsidiaries also may be required, under the solvency or guaranty laws of most states in which they do business, to pay assessments up to certain prescribed limits to fund policyholder losses or liabilities of insolvent insurance companies. These assessments may be deferred or forgiven under most guaranty laws if they would threaten an insurer's financial strength and, in certain instances, may be offset against future premium taxes.
Federal Income Tax
The annuity and life insurance products that we market generally provide the policyholder with a federal income tax advantage, as compared to certain other savings investments such as certificates of deposit and taxable bonds, in that federal income taxation on any increases in the contract values (i.e., the "inside build-up") of these products is deferred until it is received by the policyholder. With other savings investments, the increase in value is generally taxed each year as it is realized. Additionally, life insurance death benefits are generally exempt from income tax.
From time to time, various tax law changes have been proposed that could have an adverse effect on our business, including the elimination of all or a portion of the income tax advantage described above for annuities and life insurance. If legislation were enacted to eliminate the tax deferral for annuities, such a change would have an adverse effect on our ability to sell non-qualified annuities. Non-qualified annuities are annuities that are not sold to an individual retirement account or other qualified retirement plan.
Since 2013, distributions from non-qualified annuity policies are considered "investment income" for purposes of the Medicare tax on investment income contained in the Health Care and Education Reconciliation Act of 2010. As a result, in certain circumstances a 3.8% tax ("Medicare Tax") may be applied to some or the entire taxable portion of distributions from non-qualified annuities to individuals whose income exceeds certain threshold amounts. This tax may have an adverse effect on our ability to sell non-qualified annuities to individuals whose income exceeds these threshold amounts.
Employees
As of December 31, 2016,2017, we had 530515 full-time employees. We have experienced no work stoppages or strikes and consider our relations with our employees to be excellent. None of our employees are represented by a union.
Item 1A.    Risk Factors
We are exposed to significant financial and capital risk, including changing interest rates and credit spreads which may have an adverse effect on sales of our products, profitability, investment portfolio and reported book value per share.
Future changes in interest rates and credit spreads may result in fluctuations in the income derived from our investments. These and other factors could have a materialan adverse effect on our financial condition, results of operations or cash flows.

Interest rate and credit spread risk. Our interest rate risk is related to market price and changes in cash flow. Substantial and sustained increases and decreases in market interest rates can materially and adversely affect the profitability of our products, our ability to earn predictable returns, the fair value of our investments and the reported value of stockholders' equity. A rise in interest rates, in the absence of other countervailing changes, will decrease the unrealized gain position of our investment portfolio and may result in an unrealized loss position. With respect to our available for sale fixed maturity securities, such declines in value (net of income taxes and certain adjustments for assumed changes in amortization of deferred policy acquisition costs and deferred sales inducements) reduce our reported stockholders' equity and book value per share.
If interest rates rise dramatically within a short period of time, our business may be exposed to disintermediation risk. Disintermediation risk is the risk that our policyholders may surrender all or part of their contracts in a rising interest rate environment, which may require us to sell assets in an unrealized loss position. Alternatively, we may increase crediting rates to retain business and reduce the level of assets that may need to be sold at a loss. However, such action would reduce our investment spread and net income.
Due to the long-term nature of our annuity liabilities, sustained declines in long-term interest rates may result in increased redemptions of our fixed maturity securities that are subject to call redemption prior to maturity by the issuer or prepayments of commercial mortgage loans and expose us to reinvestment risk. If we are unable to reinvest the proceeds from such redemptions into investments with credit quality and yield characteristics of the redeemed or prepaid investments, our net income and overall financial performance may be adversely affected. We have a certain ability to mitigate this risk by lowering crediting rates on our products subject to certain restrictions as discussed below.
Our exposure to credit spreads is related to market price and changes in cash flows related to changes in credit spreads. If credit spreads widen significantly it could result in greater investment income on new investments but would also indicate growing concern about the ability of credit issuers to service their debt which could result in additional other than temporary impairments. If credit spreads tighten significantly it could result in reduced net investment income from new purchases of fixed maturity securities or fundings of commercial mortgage loans.
Credit risk. We are subject to the risk that the issuers of our fixed maturity securities and other debt securities and borrowers on our commercial mortgages, will default on principal and interest payments, particularly if a major downturn in economic activity occurs. An increase in defaults on our fixed maturity securities and commercial mortgage loan portfolios could harm our financial strength and reduce our profitability.

Credit and cash flow assumption risk is the risk that issuers of securities, mortgagees on mortgage loans or other parties, including derivatives counterparties, default on their contractual obligations or experience adverse changes to their contractual cash flow streams. We attempt to minimize the adverse impact of this risk by monitoring portfolio diversification and exposure by asset class, creditor, industry, and by complying with investment limitations governed by state insurance laws and regulations as applicable. We also consider all relevant objective information available in estimating the cash flows related to residential and commercial mortgage backed securities.
We use derivative instruments to fund the annual credits on our fixed index annuities. We purchase derivative instruments, consisting primarily of one-year call options, from a number of counterparties. Our policy is to acquire such options only from counterparties rated "A-"or better by a nationally recognized rating agency and the maximum credit exposure to any single counterparty is subject to concentration limits. In addition, we have entered into credit support agreements with our counterparties which allow us to require our counterparties to post collateral to secure their obligations to us under the derivative instruments. If our counterparties fail to honor their obligations under the derivative instruments, our revenues may not be sufficient to fund the annual index credits on our fixed index annuities. Any such failure could harm our financial strength and reduce our profitability.
Liquidity risk. We could have difficulty selling our private placementcertain investments such as privately placed securities and commercial mortgage loans because they are less liquid than our publicly traded securities. If we require significant amounts of cash on short notice, we may have difficulty selling these securities and loans at attractive prices or in a timely manner, or both.
Fluctuations in interest rates and investment spread could adversely affect our financial condition, results of operations and cash flows.
A key component of our net income is the investment spread. A narrowing of investment spreads may adversely affect operating results. Although we have the right to adjust interest crediting rates (cap, participation or asset fee rates for fixed index annuities) on most products, changes to crediting rates may not be sufficient to maintain targeted investment spreads in all economic and market environments. In general, our ability to lower crediting rates is subject to minimum crediting rates filed with and approved by state regulators. In addition, competition and other factors, including the potential for increases in surrenders and withdrawals, may limit our ability to adjust or maintain crediting rates at levels necessary to avoid the narrowing of spreads under certain market conditions. Our policy structure generally provides for resetting of policy crediting rates at least annually and imposes withdrawal penalties for withdrawals during the first 5 to 17 years a policy is in force.
Managing the investment spread on our fixed index annuities is more complex than it is for fixed rate annuity products. We manage the index-based risk component of our fixed index annuities by purchasing call options on the applicable indices to fund the annual index credits on these annuities and by adjusting the caps, participation rates and asset fees on policy anniversary dates to reflect changes in the cost of such options which varies based on market conditions. The price of such options generally increases with increases in the volatility in both the indices and interest rates, which may either narrow the spread or cause us to lower caps or participation rates. Thus, the volatility of the cost of the indices adds an additional degree of uncertainty to the profitability of the index products. We attempt to mitigate this risk by resetting caps, participation rates and asset fees annually on the policy anniversaries.

Persistent environment of low interest rates affects and may continue to negatively affect our results of operations and financial condition.
Prolonged periods of low interest rates may have a negative impact on our ability to sell our fixed index annuities as consumers look for other financial instruments with potentially higher yieldsreturns to fund retirement. In times of low interest rates, such as we have been experiencing since 2010 and which we may continue to experience in 2017,2018, it is difficult to offer attractive rates and benefits to customers while maintaining profitability, which may limit sales growth of interest sensitive products.
Sustained declines in interest rates may subject us to lower returns on our invested assets, and we have had to and may have to continue to invest the cash we receive from premiums and interest or return of principal on our investments in instruments with yields less than those we currently own. This may reduce our future net investment income and compress the spread on our annuity products. Further, borrowers may prepay fixed maturity securities and commercial mortgage loans in order to borrow at lower market rates. Any related prepayment fees are recorded in net investment income and may create income statement volatility.
An environment of rising interest rates may materiallyadversely affect our liquidity and financial condition.
Periods of rising interest rates may cause increased policy surrenders and withdrawals as policyholders seek financial instruments with higher returns, commonly referred to as disintermediation. This may lead to net cash outflows and the resulting liquidity demands may require us to sell investment assets when the prices of those assets are adversely affected by the increase in interest rates, which may result in realized investment losses. Further, a portion of our investment portfolio consists of commercial mortgage loans and privately placed securities, which are relatively illiquid, thus increasing our liquidity risk in the event of disintermediation. We may also be required to accelerate the amortization of deferred policy acquisition costs and deferred sales inducements related to surrendered contracts, which would adversely affect our results of operations.
During such times, we may offer higher crediting rates on new sales of annuity products and increase crediting rates on existing annuity products to maintain or enhance product competitiveness. We may not be able to purchase enough higher yielding assets necessary to fund higher crediting rates and maintain our desired spread, which could result in lower profitability on our business. Alternatively, if we seek to maintain profitability of our products in rising interest rate environments it may be difficult to position our products to offer attractive rates and benefits to customers which may limit sales growth of interest sensitive products.

Our valuation of fixed maturity securities may include methodologies, estimates and assumptions which are subject to differing interpretations and could result in changes to investment valuations that may materially adversely affect our results of operations or financial condition.
Fixed maturity securities are reported at fair value in our consolidated balance sheets. During periods of market disruption including periods of significantly rising or high interest rates, rapidly widening credit spreads or illiquidity, it may be difficult to value certain of our securities if trading becomes less frequent and/or market data becomes less observable. Prices provided by independent broker quotespricing services or independent pricing servicesbroker quotes that are used in the determination of fair value can vary significantly for a particular security. There may be certain asset classes that were in active markets with significant observable data that become illiquid due to changes in the current financial environment. As such, valuations may include inputs and assumptions that are less observable or require greater judgment as well as valuation methods that require greater judgment. Further, rapidly changing and unprecedented credit conditions could materiallynegatively impact the valuation of securities as reported in our consolidated financial statements and the period-to-period changes in value could vary significantly. Decreases in value may have a materialan adverse effect on our results of operations or financial condition.
Defaults on commercial mortgage loans and volatility in performance may adversely affect our business, financial condition and results of operations.
Commercial mortgage loans have the potential to face heightened delinquency and default risk depending on economic conditions which could have a negative impact on the performance of the underlying collateral, resulting in declining values and an adverse impact on the obligors of such instruments. An increase in the default rate of our commercial mortgage loan investments could have an adverse effect on our business, financial condition and results of operations.
In addition, the carrying value of commercial mortgage loans is negatively impacted by such factors. The carrying value of commercial mortgage loans is stated as outstanding principal less any loan loss allowances recognized. Considerations in determining allowances include, but are not limited to, the following: (i) declining debt service coverage ratios and increasing loan to value ratios; (ii) bankruptcy filings of major tenants or affiliates of the borrower on the property; (iii) catastrophic events at the property; and (iv) other subjective events or factors, including whether the terms of the debt will be restructured. There can be no assurance that management's assessment of loan loss allowances on commercial mortgage loans will not change in future periods, which could lead to investment losses.
Conditions in the U.S. and global capital markets and economies could deteriorate in the near future and affect our financial position and our level of earnings from our operations.
TheDespite modest economic improvement in 2017, the U.S. government has continuedremains accommodative in policy to keep interestsupport the economic expansion, however signs have developed that indicate the Federal Reserve may need to raise short-term rates low as a strategy to stimulatemaintain inflation within their target range. In addition, the economy.U.S. government remains accommodative in regard to its security purchases program, reinvesting principal payments from its investment portfolio. While these strategies have appearedappear to be successful, any future economic downturn or market disruption could negatively impact our ability to invest funds. Specifically, if market conditions deteriorate in 20172018 or beyond:

our investment portfolio could incur additional other than temporary impairments;
our commercial mortgage loans could experience a greater amount of loss;
due to potential downgrades in our investment portfolio, we could be required to raise additional capital to sustain our current business in force and new sales of our annuity products, which may be difficult in a distressed market. If capital would be available, it may be at terms that are not favorable to us;
we may be required to limit growth in sales of our annuity products; and/or
our liquidity could be negatively affected and we could be forced to limit our operations and our business could suffer, as we need liquidity to pay our policyholder benefits, operating expenses, dividends on our capital stock, and to service our debt obligations.
The principal sources of our liquidity are annuity deposits, investment income and proceeds from the sale, maturity and call of investments. Sources of additional capital in normal markets include the issuance by us of a variety of short and long-term instruments, including equity, debt or other types of securities.
We face competition from companies that have greater financial resources, broader arrays of products and higher ratings, which may impair our ability to retain existing customers, attract new customers and maintain our profitability and financial strength.
We operate in a highly competitive industry. Many of our competitors are substantially larger and enjoy substantially greater financial resources, higher ratings by rating agencies, broader and more diversified product lines and more widespread agency relationships. Our annuity products compete with fixed index, fixed rate and variable annuities sold by other insurance companies and also with mutual fund products, traditional bank products and other retirement funding alternatives offered by asset managers, banks and broker/dealers. Our insurance products compete with those of other insurance companies, financial intermediaries and other institutions based on a number of factors, including premium rates, policy terms and conditions, service provided to distribution channels and policyholders, ratings by rating agencies, reputation and distributor compensation.

While we compete with numerous other companies, we view the following as our most significant competitors:
AIG Companies;
Allianz Life Insurance Company of North America;
Security Benefit Life;Athene USA Corp;
Great American Life Insurance Company;
AIG Companies;
Athene USA Corp; and
Midland National Life Insurance Company.Company;
Nationwide; and
Security Benefit Life.
Our ability to compete depends in part on returns and other benefits we make available to our policyholders through our annuity contracts. We will not be able to accumulate and retain assets under management for our products if our investment results underperform the market or the competition, since such underperformance likely would result in lower rates to policyholders which could lead to withdrawals and reduced sales.
Our ability to compete also depends on financial strength ratings we receive from rating agencies. A ratings downgrade, or the potential for a ratings downgrade, could have a number of adverse effects on our business. For example, distributors and sales agents for life insurance and annuity products use the ratings as one factor in determining which insurer's annuities to market. A ratings downgrade could cause those distributors and agents to seek alternative carriers.
We compete for distribution sources for our products. We believe that our success in competing for distributors depends on our financial strength, the services we provide to and the relationships we develop with these distributors, as well as offering competitive commission structures. Our distributors are generally free to sell products from whichever providers they wish, which makes it important for us to continually offer distributors products and services they find attractive. If our products or services fall short of distributors' needs, we may not be able to establish and maintain satisfactory relationships with distributors of our products. Our ability to compete in the past has also depended in part on our ability to develop innovative new products and bring them to market more quickly than our competitors. In order for us to compete in the future, we will need to continue to bring innovative products to market in a timely fashion. Otherwise, our revenues and profitability could suffer.
Our reinsurance program involves risks because we remain liable with respect to the liabilities ceded to reinsurers if the reinsurers fail to meet the obligations assumed by them.
Our life insurance subsidiaries cede certain policies to other insurance companies through reinsurance agreements. American Equity Life has three coinsurance agreements with Athene covering $3.9$4.2 billion of policy benefit reserves at December 31, 20162017 and American Equity Life has entered into two coinsurance agreements with EquiTrust covering $0.7$0.6 billion of policy benefit reserves at December 31, 2016.2017. Since Athene is an unauthorized reinsurer, the annuity deposits that have been ceded to Athene are held in trusts and American Equity Life is named as the sole beneficiary of the trusts. The assets in the trusts are required to remain at a value that is sufficient to support the current balance of policy benefit liabilities of the ceded business on a statutory basis. If the value of the assets in the trusts would ever be less than the amount of the ceded policy benefit liabilities on a statutory basis, Athene is required to either establish a letter of credit or deposit securities in the trusts for the amount of any shortfall. We remain liable with respect to the policy liabilities ceded to EquiTrust and Athene should either fail to meet the obligations assumed by them.
In addition, we have entered into other types of reinsurance contracts including indemnity reinsurance and financing arrangements. Should any of these reinsurers fail to meet the obligations assumed under such contracts, we remain liable with respect to the statutory liabilities ceded.
Any disruption in our ability to maintain our reinsurance program may hinder our ability to manage our regulatory capital.
No assurances can be made that reinsurance will remain continuously available to us to the same extent and on the same terms as are currently available. If we were unable to maintain our current level of reinsurance or purchase new reinsurance protection in amounts that we consider sufficient and at prices that we consider acceptable, we would have to accept an increase in our net liability exposure or a decrease in our statutory surplus, reduce the amount of business we write or develop other alternatives to reinsurance.

We may experience volatility in net income due to the application of fair value accounting to our derivative instruments.
All of our derivative instruments, including certain derivative instruments embedded in other contracts, are recognized in the balance sheet at their fair values and changes in fair value are recognized immediately in earnings. This impacts certain revenues and expenses we report for our fixed index annuity business as follows:
We must present the call options purchased to fund the annual index credits on our fixed index annuity products at fair value. The fair value of the call options is based upon the amount of cash that would be required to settle the call options obtained from the counterparties adjusted for the nonperformance risk of the counterparty. We record the change in fair value of these options as a component of our revenues. The change in fair value of derivatives includes the gains or losses recognized at expiration of the option term or upon early termination and changes in fair value for open positions.
The contractual obligations for future annual index credits are treated as a "series of embedded derivatives" over the expected life of the applicable contracts. Increases or decreases in the fair value of embedded derivatives generally correspond to increases or decreases in equity market performance and changes in the interest rates used to discount the excess of the projected policy contract values over the projected minimum guaranteed contract values. We record the change in fair value of these embedded derivatives as a component of our benefits and expenses in our consolidated statements of operations.
The application of fair value accounting for derivatives and embedded derivatives in future periods to our fixed index annuity business may cause substantial volatility in our reported net income.
Our results of operations and financial condition depend on the accuracy of management assumptions and estimates.
Assumptions and estimates are made regarding expenses and interest rates, tax liability, contingent liabilities, investment performance and other factors related to our business and anticipated results. We rely on these assumptions and estimates when determining period end accruals, future earnings and various components of our consolidated balance sheet. All assumptions and estimates utilized incorporate many factors, none of which can be predicted with certainty. Our actual experiences, as well as changes in estimates, are used to prepare our consolidated statement of operations. To the extent our actual experience and changes in estimates differ from original estimates, our results of operations and financial condition could be materially adversely affected.
The calculations we use to estimate various components of our consolidated balance sheet and consolidated statement of operations are necessarily complex and involve analyzing and interpreting large quantities of data. The assumptions and estimates required for these calculations involve judgment and by their nature are imprecise and subject to changes and revisions over time. Accordingly, our results may be adversely affected from time to time by actual results differing from assumptions, by changes in estimates and by changes resulting from implementing more sophisticated administrative systems and procedures that facilitate the calculation of more precise estimates.
We may face unanticipated losses if there are significant deviations from our assumptions regarding the probabilities that our annuity contracts will remain in force from one period to the next and our assumptions regarding policyholders' utilization of lifetime income benefit riders.
The expected future profitability of our annuity products is based in part upon expected patterns of premiums, expenses and benefits using a number of assumptions, including those related to the probability that a policy or contract will remain in force, or persistency, and mortality. Since no insurer can precisely determine persistency or mortality, actual results could differ significantly from assumptions, and deviations from estimates and assumptions could have a materialan adverse effect on our business, financial condition or results of operations. For example, actual persistency that is lower than our assumptions could have an adverse impact on future profitability, especially in the early years of a policy or contract primarily because we would be required to accelerate the amortization of expenses we deferred in connection with the acquisition of the policy.
In addition, we set initial crediting rates for our annuity products based upon expected claims and payment patterns,benefit payments using assumptions for, among other factors, mortality rates of our policyholders. The long-term profitability of these products depends upon how our actual experience compares with our pricing assumptions. For example, if mortality rates are lower than our pricing assumptions, we could be required to make more payments under certain annuity contracts in addition to what we had projected.
In determining the liability from period to period of our lifetime income benefit riders, we must make significant assumptions such as expected index credits, the age when a policyholder may begin to utilize the rider and the number of policyholders that may not utilize the rider at all. Changes in these assumptions can be material.significant. Our experience regarding policyholder activity is limited as we began issuing policies with this rider in 2007. Accordingly, our results of operations could be adversely affected from time to time by actual index credits being different than expected, actual policyholder behavior varying from what we have assumed in determining the liability associated with these riders and by changes in estimates based on this policyholder behavior.

If our estimated gross profits decrease significantly from initial expectations we may be required to expense our deferred policy acquisition costs and deferred sales inducements in an accelerated manner, which would reduce our profitability.
Deferred policy acquisition costs are costs that vary with and primarily relate to the successful acquisition of new business. Deferred sales inducements are contract enhancements such as first-year premium and interest bonuses that are credited to policyholder account balances. These costs are capitalized when incurred and are amortized over the life of the contracts. Current amortization of these costs is generally in proportion to expected gross profits from interest margins and, to a lesser extent, from surrender charges and rider fees. Unfavorable experience with regard to expected expenses, investment returns, mortality or withdrawals may cause acceleration of the amortization of these costs resulting in an increase of expenses and lower profitability.

If we do not manage our growth effectively, our financial performance could be adversely affected; our historical growth rates may not be indicative of our future growth.
We have experienced rapid growth since our formation in December 1995. We intend to continue to grow and further growth will impose significant added responsibilities on our management, including the need to identify, recruit, maintain and integrate additional employees, including management. There can be no assurance that we will be successful in expanding our business or that our systems, procedures and controls will be adequate to support our operations as they expand. In addition, due to our rapid growth and resulting increased size, it may be necessary to expand the scope of our investing activities to asset classes in which we historically have not invested or have not had significant exposure. If we are unable to adequately manage our investments in these classes, our financial condition or operating results in the future could be less favorable than in the past. Further, we have utilized reinsurance in the past to support our growth. The future availability and cost of reinsurance is uncertain. Our failure to manage growth effectively, or our inability to recruit, maintain and integrate additional qualified employees and independent agents, could have a materialan adverse effect on our business, financial condition or results of operations. In addition, our historical growth rates are not likely to accurately reflect our future growth rates or our growth potential. We cannot assure you that our future revenues will increase or that we will continue to be profitable.
Our operations support complex transactions and are highly dependent on the proper functioning of information technology and communication systems. Any failure of our information technology or communications systems may result in a materiallyan adverse effect on our results of operations and corporate reputation.
While systems and processes are designed to support complex transactions and avoid systems failure, fraud, information security failures, processing errors and breaches of regulation, any failure could lead to a materiallyhave an adverse effect on our business, results of operations and corporate reputation.financial condition. In addition, we must commit significant resources to maintain and enhance our existing systems in order to keep pace with industry standards and customer preferences. If we fail to keep up-to-date information systems, we may not be able to rely on information for product pricing, risk management and underwriting decisions. In addition, even though backup and recovery systems and contingency plans are in place, we cannot assure investors that interruptions, failures or breaches in security of these processes and systems will not occur, or if they do occur, that they can be remediated promptly. The occurrence of any of these events could have a materiallyan adverse effect on our business, results of operations and financial condition.
An information technology failure or security breach may disrupt our business, damage our reputation and adversely affect our results of operations, financial condition and cash flows.
We use information technology ("IT") to store, retrieve, evaluate and utilize customer and company data and information. Our business is highly dependent on our ability to access IT systems to perform necessary business functions such as providing customer support, making changes to existing policies, filing and paying claims, managing our investment portfolios and producing financial statements. While we havemaintain comprehensive policies, procedures, automation and backup plans, and a broad range of information security technical and human controls designed to prevent or limit the effect of a failure, ourall IT may besystems are vulnerable to disruptions or data breaches as athe result of natural disasters,or man-made disasters, criminal activity, pandemics or other events beyond ouran organization's control. The failure of our IT for any reasonof these reasons could disrupt our operations, resultcause reputational harm resulting in the loss of customers, and may adversely affector otherwise negatively impact our business results of operations and financial condition.
We retain confidential information within our IT, and we rely on sophisticated commercial control technologies to maintain the security of those systems. Anyone who is able to circumvent our security measures and penetrate our IT could access, view, misappropriate, alter, or delete any information incontained with the accessed systems, including personally identifiable policyholder information and proprietary business information. In addition,The NAIC has adopted the Insurance Data Security Model Law which established the standards for data security and investigation and notification of a breach of data security for insurance companies, and an increasing number of states require that affected persons be notified if a security breach results in the disclosure of their personally identifiable customer information. Any compromise of the security of our computer systems that results in the inappropriate disclosure of personally identifiable customer information could damage our reputation in the marketplace, deter people from purchasing our products, subject us to significant civil and criminal liability and require us to incur significant technical, legal and other expenses. While there have been attempts to penetrate our IT security defenses, there is evidence that the attacks have been blocked and there is no evidence that any the attacks have been successful or that an IT breach has occurred.

If we are unable to attract and retain national marketing organizations, independent agents, broker/dealers, banks and registered investment advisors, sales of our products may be reduced.
We must attract and retain marketing organizations and distributors, including agents to sell our products. Insurance companies compete vigorously for productive agents. We compete with other life insurance companies for marketers and agents primarily on the basis of our financial position, support services, compensation and product features. Such marketers and agents may promote products offered by other life insurance companies that may offer a larger variety of products than we do. Our competitiveness for such marketers and agents also depends upon the long-term relationships we develop with them. We are developing a network of broker/dealers, banks and registered investment advisors to distribute our products. If we are unable to attract and retain sufficient marketers, agents, broker/dealers, banks and registered investment advisors to sell our products, our ability to compete and our sales would suffer.

We may require additional capital to support our business and sustain future growth which may not be available when needed or may be available only on unfavorable terms.
Our long-term strategic capital requirements will depend on many factors including the accumulated statutory earnings of our life insurance subsidiaries and the relationship between the statutory capital and surplus of our life insurance subsidiaries and various elements of required capital. For the purpose of supporting long-term capital requirements, we may need to increase or maintain the statutory capital and surplus of our life insurance subsidiaries through additional financings, which could include debt, equity, financing arrangements and/or other surplus relief transactions. Adverse market conditions have affected and continue to affect the availability and cost of capital. Such financings, if available at all, may be available only on terms that are not favorable to us. If we cannot maintain adequate capital, we may be required to limit growth in sales of new annuity products, and such action could adversely affect our business, financial condition or results of operations.
Changes in state and federal regulation may affect our profitability.
We are subject to regulation under applicable insurance statutes, including insurance holding company statutes, in the various states in which our life insurance subsidiaries transact business. Our life insurance subsidiaries are domiciled in Iowa and New York. We are currently licensed to sell our products in 50 states and the District of Columbia. Insurance regulation is intended to provide safeguards for policyholders rather than to protect shareholders of insurance companies or their holding companies. As increased scrutiny has been placed upon the insurance regulatory framework, a number of state legislatures have considered or enacted legislative proposals that alter, and in many cases increase, state authority to regulate insurance companies and holding company systems.
Regulators oversee matters relating to trade practices, policy forms, claims practices, guaranty funds, types and amounts of investments, reserve adequacy, insurer solvency, minimum amounts of capital and surplus, transactions with related parties, changes in control and payment of dividends.
The NAIC and state insurance regulators continually reexamine existing laws and regulations. The NAIC may develop and recommend adoption of new or modify existing Model Laws and Regulations. State insurance regulators may impose those recommended changes, or others, in the future.
Our life insurance subsidiaries are subject to state insurance regulations based on the NAIC's risk-based capital requirements which are intended to be used by insurance regulators as an early warning tool to identify deteriorating or weakly capitalized insurance companies for the purpose of initiating regulatory action. Our life insurance subsidiaries also may be required, under solvency or guaranty laws of most states in which they do business, to pay assessments up to certain prescribed limits to fund policyholder losses or liabilities for insolvent insurance companies.
Although the federal government does not directly regulate the insurance business, federal legislation and administrative policies in several areas, including pension regulation, age and sex discrimination, financial services regulation, securities regulation and federal taxation, can significantly affect the insurance business. In addition, legislation has been enacted which could result in the federal government assuming some role in the regulation of the insurance industry.
In July 2010, the Dodd-Frank Act was enacted and signed into law. The Dodd-Frank Act made extensive changes to the laws regulating the financial services industry and requires various federal agencies to adopt a broad range of new rules and regulations. Among other things, the Dodd-Frank Act imposes a comprehensive new regulatory regime on the over-the-counter ("OTC") derivatives marketplace. It also requires central clearing for certain derivatives transactions that the U.S. Commodities Futures Trading Commission ("CFTC") determines must be cleared and are accepted for clearing by a "derivatives clearing organization" (subject to certain exceptions) and provides the CFTC with authority to impose position limits across markets. The Dodd-Frank Act and any such regulations may subject us to additional restrictions on our hedging positions which may have an adverse effect on our ability to hedge risks associated with our business, including our fixed index annuity business, or on the cost of our hedging activity.
The Dodd-Frank Act also created Financial Stability Oversight Council ("FSOC"). The FSOC may designate whether certain insurance companies and insurance holding companies pose a grave threat to the financial stability of the United States, in which case such companies would become subject to prudential regulation by the Board of Governors of the U.S. Federal Reserve. The Dodd-Frank Act also established a Federal Insurance Office under the U.S. Treasury Department to monitor all aspects of the insurance industry other than certain health insurance, certain long-term care insurance and crop insurance. It is not possible at this time to assess the impact on our business of the establishment of the Federal Insurance Office and the FSOC. However, the regulatory framework at the state and federal level applicable to our insurance products is evolving. The changing regulatory framework could affect the design of such products and our ability to sell certain products. Any changes in these laws and regulations could materially and adversely affect our business, financial condition or results of operations.

On April 6, 2016, the U.S. Department of LaborDOL released a final regulation which substantially expands the range of activities that will be considered to be fiduciary advice under the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code of 1986. IfAs released, the final regulation is not overturned by pending lawsuits or otherwise delayed, repealed or revised,provided for a phased implementation will phase in beginning April 10, 2017, with full implementation by January 1, 2018. On April 7, 2017, the DOL issued a final rule delaying the applicability date of the regulation and related exemptions. The new definition of fiduciary and the impartial conduct standards became effective on June 9, 2017. Following the issuance of an additional final rule on November 29, 2017, compliance with the remaining conditions and related exemptions is not required until July 1, 2019. Insurance agents are permitted to rely on Prohibited Transaction Exemption 84-24 until July 1, 2019 for all annuity sales. Additionally, the DOL issued a temporary enforcement policy covering the transition period between June 9, 2017 and July 1, 2019, during which the DOL will not pursue claims against advisers who are working diligently and in good faith to comply with their fiduciary duties and the conditions of the prohibited transaction exemptions.  Additional changes to the regulation’s requirement are possible prior to full implementation on July 1, 2019.

Lawsuits are pending challenging the regulation and efforts continue to delay, repeal or revise the regulation. The success of efforts to overturn, delay, repeal or revise the regulation cannot be predicted. We believe it could materiallynegatively impact our business and have an adverse effect on sales of annuity products to individual retirement account (“IRA”) holders, particularly fixed index annuity products sold in the independent insurance agent distribution channel. A significant portion of our annuity sales are to IRAs. The new regulation deems advisors, including independent insurance agents, who sell fixed index annuities to IRAs, IRA rollovers or 401(k) plans fiduciaries and prohibits them from receiving compensation unless they comply with a prohibited transaction exemption.
Although the precise impact of the final regulation is difficult to assess, compliance with the prohibited transaction exemptions will likely result in increased regulatory burdens, decreases in sales, changes to our compensation practices and product offerings and increased litigation risk, which could negatively impact our business, financial condition or results of operations or financial condition.operations.
The regulatory framework at the state and federal level applicable to our insurance products is evolving. The changing regulatory framework could affect the design of such products and our ability or the ability of our agents to sell certain products. Any changes in these laws and regulations could materially and adversely affect our business, financial condition or results of operations.
Changes in federal income taxation laws, including any reduction in individual income tax rates, may affect sales of our products and profitability.
The annuity and life insurance products that we market generally provide the policyholder with certain federal income tax advantages. For example, federal income taxation on any increases in non-qualified annuity contract values (i.e., the "inside build-up") is deferred until it is received by the policyholder. With other savings instruments, such as certificates of deposit and taxable bonds, the increase in value is generally taxed each year as it is realized. Additionally, life insurance death benefits are generally exempt from income tax. Decreases in individual income tax rates would decrease the advantage of deferring the inside build-up.
From time to time, various tax law changes have been proposed that could have an adverse effect on our business, including the elimination of all or a portion of the income tax advantages described above for annuities and life insurance. If legislation were enacted to eliminate all or a portion of the tax deferral for annuities, such a change would have an adverse effect on our ability to sell non-qualified annuities. Non-qualified annuities are annuities that are not sold to a qualified retirement plan.
Beginning in 2013, distributions from non-qualified annuity policies are now considered "investment income" for purposes of the Medicare tax on investment income contained in the Health Care and Education Reconciliation Act of 2010. As a result, in certain circumstances a 3.8% tax (“Medicare Tax”) may be applied to some or all of the taxable portion of distributions from non-qualified annuities to individuals whose income exceeds certain threshold amounts. This tax may have an adverse effect on our ability to sell non-qualified annuities to individuals whose income exceeds these threshold amounts.
We face risks relating to litigation and regulatory examination, including the costs of such litigation or examination, management distraction and the potential for damage awards, fines, penalties or other required remediation, which may adversely impact our business.
We are occasionally involved in litigation, both as a defendant and as a plaintiff. In addition, state regulatory bodies, such as state insurance departments, the SEC, the Financial Industry Regulatory Authority, Inc. ("FINRA"), the Department of Labor and other regulatory bodies regularly make inquiries and conduct examinations or investigations concerning our compliance with, among other things, insurance laws, securities laws, the Employee Retirement Income Security Act of 1974, as amended, and laws governing the activities of broker/dealers. Companies in the life insurance and annuity business have faced litigation, including class action lawsuits, alleging improper product design, improper sales practices and similar claims.
A downgrade in our credit or financial strength ratings may increase our future cost of capital, reduce new sales, adversely affect relationships with distributors and increase policy surrenders and withdrawals.
Currently, our senior unsecured indebtedness carries a "BBB-" rating with a stable outlook from Standard & Poor's, a BBB-BB+ rating with a stable outlook from Fitch Ratings, and a "bbb-" rating with a stable outlook from A.M. Best Company. Our ability to maintain such ratings is dependent upon the results of operations of our subsidiaries and our financial strength. If we fail to preserve the strength of our balance sheet and to maintain a capital structure that rating agencies deem suitable, it could result in a downgrade of the ratings applicable to our senior unsecured indebtedness. A downgrade would likely reduce the fair value of the common stock and may increase our future cost of capital.
Financial strength ratings are important factors in establishing the competitive position of life insurance and annuity companies. In recent years, the market for annuities has been dominated by those insurers with the highest ratings. A ratings downgrade, or the potential for a ratings downgrade, could have a number of adverse effects on our business. For example, distributors and sales agents for life insurance and annuity products use the ratings as one factor in determining which insurer's annuities to market. A ratings downgrade could cause those distributors and agents to seek alternative carriers. In addition, a ratings downgrade could materially increase the number of policy or contract surrenders we experience, as well as our ability to obtain reinsurance or obtain reasonable pricing on reinsurance.
Financial strength ratings are measures of an insurance company's ability to meet contractholder and policyholder obligations and generally involve quantitative and qualitative evaluations by rating agencies of a company's financial condition and operating performance. Generally, rating agencies base their ratings upon information furnished to them by the insurer and upon their own investigations, studies and assumptions. Ratings are based upon factors of concern to agents, policyholders and intermediaries and are not directed toward the protection of investors and are not recommendations to buy, sell or hold securities.

Item 1B.    Unresolved Staff Comments
None.


Item 2.    Properties
We lease commercial office space in two buildings in West Des Moines, Iowa, one for our principal offices under an operating lease that expires on November 30, 2026 and one for our investment operations under a lease that expires on March 31,15, 2023. We also lease our office in Pell City, Alabama, pursuant to an operating lease that expires on December 31, 2017. We are fully utilizing these facilities and believe these locations to be sufficient to house our operations for the foreseeable future.
Item 3.    Legal Proceedings
See Note 13 to our audited consolidated financial statements.
Item 4.    Mine Safety Disclosures
None

PART II

Item 5.    Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Our common stock is traded on the New York Stock Exchange ("NYSE") under the symbol AEL. The following table sets forth the high and low sales prices of our common stock for each quarterly period within the two most recent fiscal years as quoted on the NYSE.
High LowHigh Low
2017   
First Quarter$28.00 $21.66
Second Quarter$26.65 $22.23
Third Quarter$29.43 $25.43
Fourth Quarter$32.54 $28.06
2016    
First Quarter$23.65 $12.65$23.65 $12.65
Second Quarter$16.96 $12.77$16.96 $12.77
Third Quarter$18.32 $13.07$18.32 $13.07
Fourth Quarter$23.41 $15.39$23.41 $15.39
2015 
First Quarter$29.62 $25.46
Second Quarter$29.90 $25.06
Third Quarter$30.02 $22.36
Fourth Quarter$28.30 $22.55
As of December 31, 2016,February 14, 2018, there were approximately 14,10025,500 holders of our common stock. In 20162017 and 20152016, we paid an annual cash dividend of $0.24$0.26 and $0.22,$0.24, respectively, per share on our common stock. We intend to continue to pay an annual cash dividend on such shares so long as we have sufficient capital and/or future earnings to do so. However, we anticipate retaining most of our future earnings, if any, for use in our operations and the expansion of our business. Any further determination as to dividend policy will be made by our board of directors and will depend on a number of factors, including our future earnings, capital requirements, financial condition and future prospects and such other factors as our board of directors may deem relevant.
Since we are a holding company, our ability to pay cash dividends depends in large measure on our subsidiaries' ability to make distributions of cash or property to us. Iowa insurance laws restrict the amount of distributions American Equity Life and Eagle Life can pay to us without the approval of the Iowa Insurance Commissioner. See Management's Discussion and Analysis of Financial Condition and Results of Operations and Note 12 to our audited consolidated financial statements, which are incorporated by reference in this Item 5.
Issuer Purchases of Equity Securities
There were no issuer purchasesThe following table presents the amount of equity securitiesour share purchase activity for the quarter ended December 31, 2016.periods indicated:
Period 
Total Number of
Shares Purchased
 
Average Price
Paid Per Share
January 1, 2017 - January 31, 2017 
 $
February 1, 2017 - February 28, 2017 
 $
March 1, 2017 - March 31, 2017 (a) 269
 $26.69
April 1, 2017 - April 30, 2017 
 $
May 1, 2017 - May 31, 2017 
 $
June 1, 2017 - June 30, 2017 
 $
July 1, 2017 - July 31, 2017 
 $
August 1, 2017 - August 31, 2017 
 $
September 1, 2017 - September 30, 2017 
 $
October 1, 2017 - October 31, 2017 
 $
November 1, 2017 - November 30, 2017 
 $
December 1, 2017 - December 31, 2017 (b) 15,058
 $31.00
Total 15,327
  
(a)Includes the number of shares of common stock utilized to execute certain stock incentive awards.
(b)The shares purchased in December 2017 were purchased from American Equity Life, which held the shares to fund a deferred compensation plan no longer in effect.


Item 6.    Selected Consolidated Financial Data
The summary consolidated financial and other data should be read in conjunction with Management's Discussion and Analysis of Financial Condition and Results of Operations and our audited consolidated financial statements and related notes appearing elsewhere in this report. The results for past periods are not necessarily indicative of results that may be expected for future periods.
Year ended December 31,Year ended December 31,
2016 2015 2014 2013 20122017 2016 2015 2014 2013
(Dollars in thousands, except per share data)(Dollars in thousands, except per share data)
Consolidated Statements of Operations Data:                  
Revenues                  
Premiums and other considerations$43,767
 $36,048
 $32,623
 $45,347
 $76,675
$34,228
 $43,767
 $36,048
 $32,623
 $45,347
Annuity product charges173,579
 136,168
 118,990
 103,591
 89,006
200,494
 173,579
 136,168
 118,990
 103,591
Net investment income1,849,872
 1,692,192
 1,531,667
 1,383,927
 1,286,923
1,991,997
 1,849,872
 1,692,192
 1,531,667
 1,383,927
Change in fair value of derivatives164,219
 (336,146) 504,825
 1,076,015
 221,138
1,677,871
 164,219
 (336,146) 504,825
 1,076,015
Net realized gains (losses) on investments, excluding other than temporary impairment ("OTTI") losses11,524
 10,211
 (4,003) 40,561
 (6,454)10,509
 11,524
 10,211
 (4,003) 40,561
Net OTTI losses recognized in operations(22,679) (19,536) (2,627) (6,234) (14,932)(4,630) (22,679) (19,536) (2,627) (6,234)
Total revenues2,220,282
 1,518,937
 2,168,973
 2,610,692
 1,652,356
3,891,652
 2,220,282
 1,518,937
 2,168,973
 2,610,692
Benefits and expenses                  
Insurance policy benefits and change in future policy
benefits
52,483
 45,458
 41,815
 53,071
 81,481
43,219
 52,483
 45,458
 41,815
 53,071
Interest sensitive and index product benefits725,472
 968,053
 1,473,700
 1,272,867
 808,479
2,023,668
 725,472
 968,053
 1,473,700
 1,272,867
Change in fair value of embedded derivatives543,465
 (464,698) 32,321
 133,968
 286,899
919,735
 543,465
 (464,698) 32,321
 133,968
Amortization of deferred sales inducements and policy acquisition costs625,178
 495,504
 294,997
 618,581
 252,076
432,576
 625,178
 495,504
 294,997
 618,581
Interest expense on notes and loan payable and subordinated debentures41,206
 41,088
 48,492
 50,958
 41,937
44,492
 41,206
 41,088
 48,492
 50,958
Other operating costs and expenses102,231
 96,218
 81,584
 91,915
 95,495
111,691
 102,231
 96,218
 81,584
 91,915
Total benefits and expenses2,090,035
 1,181,623
 1,972,909
 2,221,360
 1,566,367
3,575,381
 2,090,035
 1,181,623
 1,972,909
 2,221,360
Income before income taxes130,247
 337,314
 196,064
 389,332
 85,989
316,271
 130,247
 337,314
 196,064
 389,332
Income tax expense47,004
 117,484
 70,041
 136,049
 28,191
141,626
 47,004
 117,484
 70,041
 136,049
Net income$83,243
 $219,830
 $126,023
 $253,283
 $57,798
$174,645
 $83,243
 $219,830
 $126,023
 $253,283
                  
Per Share Data:                  
Earnings per common share$0.98
 $2.78
 $1.69
 $3.86
 $0.94
$1.96
 $0.98
 $2.78
 $1.69
 $3.86
Earnings per common share—assuming dilution0.97
 2.72
 1.58
 3.38
 0.89
Earnings per common share - assuming dilution1.93
 0.97
 2.72
 1.58
 3.38
Dividends declared per common share0.24
 0.22
 0.20
 0.18
 0.15
0.26
 0.24
 0.22
 0.20
 0.18
                  
Non-GAAP Financial Measures (a):                  
Reconciliation of net income to operating income:         
Reconciliation from net income to non-GAAP operating income:         
Net income$83,243
 $219,830
 $126,023
 $253,283
 $57,798
$174,645
 $83,243
 $219,830
 $126,023
 $253,283
Net realized investment (gains) losses, including OTTI7,188
 5,737
 4,429
 (18,170) 13,397
(5,093) 7,188
 5,737
 4,429
 (18,170)
Change in fair value of derivatives and embedded derivatives - index annuities56,634
 (44,055) 79,053
 (153,267) 48,406
Change in fair value of derivatives and embedded derivatives - fixed index annuities121,846
 56,634
 (44,055) 79,053
 (153,267)
Change in fair value of derivatives and embedded derivatives - debt(1,265) 1,296
 104
 (2,038) 4,983
(1,224) (1,265) 1,296
 104
 (2,038)
Extinguishment of debt
 
 12,503
 32,515
 

 
 
 12,503
 32,515
Litigation reserve(1,957) 
 (1,418) 30
 14,876

 (1,957) 
 (1,418) 30
Income taxes(21,499) 13,012
 (30,048) 51,067
 (29,273)(5,124) (21,499) 13,012
 (30,048) 51,067
Operating income (a non-GAAP financial measure)$122,344
 $195,820
 $190,646
 $163,420
 $110,187
Operating income per common share$1.44
 $2.48
 $2.56
 $2.49
 $1.80
Operating income per common share—assuming dilution1.43
 2.42
 2.39
 2.18
 1.69
Non-GAAP operating income$285,050
 $122,344
 $195,820
 $190,646
 $163,420
Non-GAAP operating income per common share$3.20
 $1.44
 $2.48
 $2.56
 $2.49
Non-GAAP 0perating income per common share - assuming dilution3.16
 1.43
 2.42
 2.39
 2.18



As of and for the Year Ended December 31,As of and for the Year Ended December 31,
2016 2015 2014 2013 20122017 2016 2015 2014 2013
(Dollars in thousands, except per share data)(Dollars in thousands, except per share data)
Consolidated Balance Sheet Data:                  
Total investments$44,757,568
 $39,570,332
 $35,981,858
 $30,346,654
 $27,537,210
$50,300,705
 $44,757,568
 $39,570,332
 $35,981,858
 $30,346,654
Total assets56,053,472
 49,029,392
 43,976,689
 39,605,843
 35,122,673
62,030,736
 56,053,472
 49,029,392
 43,976,689
 39,605,843
Policy benefit reserves51,637,026
 45,495,431
 39,802,861
 35,789,655
 31,773,988
56,142,673
 51,637,026
 45,495,431
 39,802,861
 35,789,655
Notes and loan payable493,755
 393,227
 413,805
 539,639
 304,473
494,093
 493,755
 393,227
 413,805
 539,639
Subordinated debentures241,853
 241,452
 241,072
 240,713
 240,460
242,565
 241,853
 241,452
 241,072
 240,713
Accumulated other comprehensive income ("AOCI")339,966
 201,663
 721,401
 46,196
 686,807
724,599
 339,966
 201,663
 721,401
 46,196
Total stockholders' equity2,291,595
 1,944,535
 2,139,876
 1,384,687
 1,720,237
2,850,157
 2,291,595
 1,944,535
 2,139,876
 1,384,687
         
��         
Other Data:                  
Life subsidiaries' statutory capital and surplus and asset valuation reserve2,933,193
 2,593,472
 2,327,335
 1,995,658
 1,741,638
3,260,328
 2,933,193
 2,593,472
 2,327,335
 1,995,658
Life subsidiaries' statutory net gain from operations before income taxes and realized capital gains (losses)144,159
 227,865
 467,923
 305,628
 182,057
565,295
 144,159
 227,865
 467,923
 305,628
Life subsidiaries' statutory net income80,699
 132,723
 344,666
 205,112
 79,644
386,274
 80,699
 132,723
 344,666
 205,112
Book value per share (b)26.04
 23.83
 27.93
 19.40
 27.46
31.91
 26.04
 23.83
 27.93
 19.40
Book value per share, excluding AOCI (b)22.17
 21.36
 18.52
 18.75
 16.49
23.79
 22.17
 21.36
 18.52
 18.75

(a)In addition to net income, we have consistently utilized non-GAAP operating income, non-GAAP operating income per common share and non-GAAP operating income per common share—assuming dilution, non-GAAP financial measures commonly used in the life insurance industry, as economic measures to evaluate our financial performance. OperatingNon-GAAP operating income equals net income adjusted to eliminate the impact of items that fluctuate from year to year in a manner unrelated to core operations and we believe measures excluding their impact are useful in analyzing operating trends. The most significant adjustments to arrive at non-GAAP operating income eliminate the impact of fair value accounting for our fixed index annuity business and are not economic in nature burbut rather impact the timing of reported results. In addition, 2017 includes a $35.9 million adjustment to arrive at non-GAAP operating income resulting from the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017 and required a revaluation of our net deferred tax assets from 35% to 21%. We believe the combined presentation and evaluation of non-GAAP operating income together with net income provides information that may enhance an investor's understanding of our underlying results and profitability. The amounts included in the reconciliation of net income to non-GAAP operating income are presented net of related adjustments to amortization of deferred sales inducements and deferred policy acquisition costs.
(b)Book value per share and book value per share excluding AOCI, non-GAAP financial measures, are calculated as total stockholders' equity and total stockholders' equity excluding AOCI divided by the total number of shares of common stock outstanding. Since AOCI fluctuates from year to year due to unrealized changes in the fair value of available for sale investments, we believe these non-GAAP financial measures provide useful supplemental information. Common shares outstanding include shares held by the NMO Deferred Compensation Trust and exclude unallocated shares held by our employee stock ownership plan—see Note 11 to our audited consolidated financial statements.

Item 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations
Management's discussion and analysis reviews our consolidated financial position at December 31, 20162017 and 2015,2016, and our consolidated results of operations for the three years in the period ended December 31, 2016,2017, and where appropriate, factors that may affect future financial performance. This analysis should be read in conjunction with our audited consolidated financial statements, notes thereto and selected consolidated financial data appearing elsewhere in this report.
Cautionary Statement Regarding Forward-Looking Information
All statements, trend analyses and other information contained in this report and elsewhere (such as in filings by us with the SEC, press releases, presentations by us or our management or oral statements) relative to markets for our products and trends in our operations or financial results, as well as other statements including words such as "anticipate", "believe", "plan", "estimate", "expect", "intend" and other similar expressions, constitute forward-looking statements. We caution that these statements may and often do vary from actual results and the differences between these statements and actual results can be material. Accordingly, we cannot assure you that actual results will not differ materially from those expressed or implied by the forward-looking statements. Factors that could contribute to these differences include, among other things:
general economic conditions and other factors, including prevailing interest rate levels and stock and credit market performance which may affect (among other things) our ability to sell our products, our ability to access capital resources and the costs associated therewith, the fair value of our investments, which could result in impairments and other than temporary impairments, and certain liabilities, and the lapse rate and profitability of policies;
customer response to new products and marketing initiatives;
changes in Federal income tax laws and regulations which may affect the relative income tax advantages of our products;
increasing competition in the sale of annuities;
regulatory changes or actions, including those relating to regulation of financial services affecting (among other things) bank sales and underwriting of insurance products and regulation of the sale, underwriting and pricing of products; and
the risk factors or uncertainties listed from time to time in our filings with the SEC.
For a detailed discussion of these and other factors that might affect our performance, see Item 1A of this report.
Executive Summary
Excellent customer service teamed with our ability to offer innovative insurance products that provide principal protection and lifetime income continued to result in significant sales of our annuity products. In 2016,2017, our sales increased 1% to $7.1were $4.2 billion which has resulted in cash and investments in excess of $45$51 billion at December 31, 2016.2017. Our sales for the last five years have ranged from $3.9$4.2 billion to $7.1 billion and we have exceeded $4 billion in sales in four of those years.billion. We have applied a conservative investment strategy to the annuity deposits we continue to manage which has provided reliable returns on our invested assets. Our profitability has also been driven by maintaining an efficient operation.
The economic and personal investing environments continued to be conducive for high sales levels as retirees and others look to put their money in instruments that will protect their principal and provide them with consistent cash flow sources in their retirement years. However, our sales slowed in the last half of 2016 as competition inand throughout 2017 due to continued competitive pressures within each of our distribution channels escalated and an industry wide slowdown in fixed index annuity sales. We continue to face headwinds from low interest rates, from severalstrong equity markets and the DOL conflict of our competitors were appreciably above prior levels. Sales of our products by independent agents may come under pressure during 2017 if the U.S. Department of Laborinterest fiduciary rule is not delayed, repealed, revised or overturned through litigation.rule.
We are currently in the midst of an unprecedented period of low interest rates and low yields for investments with the credit quality we prefer which presents a strong headwind to achieving our target rate for investment spread. In response to this persistent low interest rate environment, we have been reducing policyholder crediting rates for new annuities and existing annuities since the fourth quarter of 2011.2011 and starting in 2017 have begun focusing on investments with less liquidity that provide higher yields and have a track record of positive credit performance over time. Spread results for 2017, 2016 2015 and 20142015 reflect the benefit from these reductions;actions; however, the reductions in cost of money have been less than and were offset by continued lower yields from investment purchases.
In August 2015,On June 16, 2017, we completed an underwritten public offeringissued $500 million aggregate principal amount of 9,890,000 shares of our common stocksenior unsecured notes due 2027 which bear interest at a public offering price of $25.255.0% per share, of which 5,590,000 shares were subject to forward sale agreements.year and will mature on June 15, 2027 (the “2027 Notes”). We physically settledused the forward sales agreements on August 1, 2016 by delivery of those shares of our common stock and contributed the $134.7 million in net proceeds from the settlementissuance of the 2027 Notes to the capital and surplus of American Equity Life to support continued growth and maintain desired financial strength ratings.
On September 30, 2016, we entered into a credit agreement providing for aprepay our $100 million term loan that matureswas scheduled to mature in 2019 on September 30, 2019June 16, 2017, and to redeem our $400 million notes due 2021 (the “2021 Notes”) on July 17, 2017. We paid $413.3 million to redeem the 2021 Notes which included a $150redemption premium equal to 3.313% of the $400 million unsecured revolving lineprincipal amount of credit that maturesthe 2021 Notes. We incurred a loss of $18.4 million on September 30, 2021. The $100 millionthe redemption of loan proceeds were contributed to the capital and surplus of American Equity Life on October 3, 2016.

2021 Notes.
Our Business and Profitability
We specialize in the sale of individual annuities (primarily fixed index deferred annuities) and, to a significantly lesser extent, we also sell life insurance policies.. Under U.S. generally accepted accounting principles ("GAAP"), premium collections for deferred annuities are reported as deposit liabilities instead of as revenues. Similarly, cash payments to policyholders are reported as decreases in the liabilities for policyholder account balances and not as expenses. Sources of revenues for products accounted for as deposit liabilities are net investment income, surrender charges assessed against policy withdrawals and fees deducted from policyholder account balances for lifetime income benefit riders, net realized gains (losses) on investments and changes in fair value of derivatives. Components of expenses for products accounted for as deposit liabilities are interest sensitive and index product benefits (primarily interest credited to account balances)balances and changes in lifetime income benefit rider reserves), changes in fair value of embedded derivatives, amortization of deferred sales inducements and deferred policy acquisition costs, other operating costs and expenses and income taxes.

Our business model contemplates continued growth in invested assets and non-GAAP operating income while maintaining a high quality investment portfolio that will not experience significant losses from impairments of invested assets. We are committed to maintaining a high quality investment portfolio with limited exposure to below investment grade securities and other riskier assets. Growth in invested assets is predicated on a continuation of our high sales achievements of the last five years while at the same time maintaining a high level of retention of the funds received. The economic and personal investing environments continued to be conducive for high sales levels as retirees and others look to put their money in instruments that will protect their principal and provide them with consistent cash flow sources in their retirement years. However, our sales have slowed since the first half of 2016 as competition in our distribution channels escalated, rates from several of our competitors were appreciably above prior levels, and there continues to be uncertainty regarding the DOL conflict of interest fiduciary rule.
Our profitability depends in large part upon:
the amount of assets under our management,
investment spreads we earn on our policyholder account balances,
our ability to manage our investment portfolio to maximize returns and minimize risks such as interest rate changes and defaults or impairment of investments,
our ability to manage interest rates credited to policyholders and costs of the options purchased to fund the annual index credits on our fixed index annuities,
our ability to manage the costs of acquiring new business (principally commissions paid to agents and distribution partners and bonuses credited to policyholders), and
our ability to manage our operating expenses.expenses and
Income taxes.
Earnings from products accounted for as deposit liabilities are primarily generated from the excess of net investment income earned over the interest credited or the cost of providing index credits to the policyholder, or the "investment spread." Our investment spread is summarized as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Average yield on invested assets4.51% 4.73% 4.90%4.46% 4.51% 4.73%
Aggregate cost of money1.90% 1.96% 2.10%1.74% 1.90% 1.96%
Aggregate investment spread2.61% 2.77% 2.80%2.72% 2.61% 2.77%
  
Impact of:  
Investment yield - additional prepayment income0.06% 0.08% 0.07%0.08% 0.06% 0.08%
Cost of money benefit from over-hedging0.01% 0.04% 0.03%0.06% 0.01% 0.04%
The cost of money for fixed index annuities and average crediting rates for fixed rate annuities are computed based upon policyholder account balances and do not include the impact of amortization of deferred sales inducements. See Critical Accounting Policies—Deferred Policy Acquisition Costs and Deferred Sales Inducements. With respect to our fixed index annuities, the cost of money includes the average crediting rate on amounts allocated to the fixed rate strategy, expenses we incur to fund the annual index credits and where applicable, minimum guaranteed interest credited. Proceeds received upon expiration or early termination of call options purchased to fund annual index credits are recorded as part of the change in fair value of derivatives, and are largely offset by an expense for interest credited to annuity policyholder account balances. See Critical Accounting Policies—Policies - Policy Liabilities for Fixed Index Annuities and Financial Condition—Condition - Derivative Instruments.
RenewalWe are currently in the midst of an unprecedented period of low interest rates and low yields for investments with the credit quality we prefer which presents a strong headwind to achieving our target rate adjustments covering $16 - 17 billionfor investment spread. In response to this persistent low interest rate environment, we have been reducing policyholder crediting rates for new annuities and existing annuities since the fourth quarter of policyholder account values began2011 and starting in 2017 have begun focusing on September 1,investments with less liquidity that provide higher yields and have a track record of positive credit performance over time. Spread results for the 2017 and 2016 periods reflect the benefits from these actions. We continue to have flexibility to reduce our crediting rates if necessary and should lower the overallcould decrease our cost of money by 8approximately 49 basis points when fully implemented. In addition,if we began applying renewal rate adjustments on $7.4 billion of policyholder account values beginning on December 6, 2016. These adjustments will be implemented over the next 12reduce current rates to 15 months on policy anniversary dates and are expected to reduce a portion of the 0.49% cost of money differential between existing rates and guaranteed minimum rates we had at December 31, 2016.
We reduced new money rates on many of our fixed index annuity products by approximately 10 basis points in April 2016 and reduced new money rates on many of our non-bonus fixed index annuity products by approximately 10-25 basis points in August 2016. We also reduced rates three times on our multi-year rate guaranteed annuity products for a total of 55-85 basis points during the second and third quarters of 2016.minimums. Investment yields available to us in the third and fourth quarters of2017 increased compared to 2016, were significantly lower than the first six months of the year.however they remain below our portfolio rate. Investment yields at these levels will continue to put downward pressure on our investment spread and product returns.

Results of Operations for the Three Years Ended December 31, 20162017
Annuity deposits by product type collected during 2016,2017, 20152016 and 20142015, were as follows:
 Year Ended December 31, Year Ended December 31,
Product Type 2016 2015 2014 2017 2016 2015
 (Dollars in thousands) (Dollars in thousands)
Fixed index annuities $5,724,758
 $6,791,689
 $3,999,439
 $3,966,839
 $5,724,758
 $6,791,689
Annual reset fixed rate annuities 64,317
 45,182
 57,273
 74,829
 64,317
 45,182
Multi-year fixed rate annuities 1,303,273
 214,356
 103,293
 110,596
 1,303,273
 214,356
Single premium immediate annuities 35,851
 32,752
 24,580
 24,946
 35,851
 32,752
Total before coinsurance ceded 7,128,199
 7,083,979
 4,184,585
 4,177,210
 7,128,199
 7,083,979
Coinsurance ceded 1,736,054
 471,822
 171,124
 387,280
 1,736,054
 471,822
Net after coinsurance ceded $5,392,145
 $6,612,157
 $4,013,461
 $3,789,930
 $5,392,145
 $6,612,157
Annuity deposits before coinsurance ceded increased 1% during 2016 compared to 2015 and increased 69% during 2015 compared to 2014. Over these years, we have remained consistently in the top threefour companies for sales of fixed index annuities according to Wink's Sales and Market Report published by Wink, Inc. We attribute the continuing significant salesour leading position to our attractive product offerings, our consistent presence in the fixed index annuity market, our continued strong relationships with and excellent service provided to our distribution partners, the increased attractiveness of safe money products in volatile markets and lower interest rates on competing products such as bank certificates of deposit.
Annuity deposits before coinsurance ceded decreased 41% during 2017 compared to 2016 and increased 1% during 2016 compared to 2015. Annuity deposits after coinsurance ceded decreased 30% during 2017 as compared to 2016 and decreased 18% in 2016 as compared to 2015. The decrease in sales in 2017 primarily reflects continued competitive pressures within each of our distribution channels. In addition, low interest rates, strong equity markets and uncertainty surrounding the DOL conflict of interest fiduciary rule continue to be headwinds for sales of guaranteed income products. The relatively smaller decline in net sales compared to gross sales is due to a decrease in coinsurance ceded premiums as a result of significantly lower sales of multi-year rate guaranteed ("MYGA") fixed annuity product which are substantially coinsured, a reduction in the portion of Eagle Life's fixed index annuity sales that are coinsured and lower sales of Eagle Life's fixed index annuity products.
2016 sales levels were supported by sales of multi-year rate guaranteed (MYGA)MYGA fixed annuity products. These products are often emphasized by banks which are an expanding source of distribution for Eagle Life. Our rates on these products were more competitive during the first half of 2016 and together with the larger number of bank distribution relationships, translated into a significant increase in sales of those products.
Annuity deposits before coinsurance ceded from fixed index annuities decreased 16% as compared to 2015. We In 2015, we had robust sales of fixed index annuities by independent agents during the final three quarters of 2015 following the withdrawal in the first quarter of 2015 of a competitor’s guaranteed income product that had been the source of significant competition. This competitor has returned to the market in 2016 and in general the market in the independent agent distribution channel has beenwas more competitive in 2016. Declines2017 and 2016 than it was in fixed index annuity sales from independent agents has been partially offset by increases in sales from banks and broker-dealers which were up 65% in 2016 to $610.6 million. These increases were attributable to an expansion in the number of distribution relationships selling Eagle Life's fixed index annuities from 42 relationships as of December 31, 2015 to 53 relationships as of December 31, 2016 and increased sales from many of the relationships that were selling Eagle Life's fixed index annuities in both periods.2015.
We coinsure 80% of the premiumsannuity deposits received from (1) MYGA fixed annuity products (2)and 50% of the fixed index annuities sold by Eagle Life through broker/dealers and banksbanks. Prior to January 1, 2017, we coinsured 80% of the annuity deposits received from MYGA fixed annuity products and (3) certain non-bonus80% of the fixed index annuity productsannuities sold by American Equity Life from August 1, 2016 through December 31, 2016.Eagle Life. The increaseschanges in coinsurance ceded premiums are attributable to the increaseschanges in premiums from these sources. The premiums ceded for American Equity Life's non-bonus fixed index annuities issued from August 1, 2016 through December 31, 2016 were $198.1 million.
Net income, in general, has been positively impacted by the growth in the volume of business in force and the investment spread earned on this business. The average amount of annuity account balances outstanding (net of annuity liabilities ceded under coinsurance agreements) increased 14%8% to $46.8 billion for the year ended December 31, 2017 compared to $43.5 billion in 2016 and 14% for the year ended December 31, 2016 compared to $38.1 billion in 2015 and 14% for the year ended December 31, 2015 compared to $33.4 billion in 2014.2015. Our investment spread measured in dollars was $1.2 billion, $1.0 billion, $924.8 million, and $809.5$924.8 million for the years ended December 31, 2017, 2016 2015 and 2014,2015, respectively. As previously mentioned, our investment spread has been negatively impacted by the extended low interest rate environment (see Net investment income).
Net income for the year ended December 31, 2017 was negatively impacted by $35.9 million related to the revaluation of our net deferred tax assets using the newly enacted federal tax rate as a result of the Tax Cuts and Jobs Act of 2017.
Net income for the year ended December 31, 2017 was also negatively impacted by an $18.4 million pretax loss on the extinguishment of our 2021 Notes, which reduced net income by $10.8 million. See Note 9 to our audited consolidated financial statements.
Net income is also impacted by the change in fair value of derivatives and embedded derivatives which fluctuates from year to year based upon changes in fair values of call options purchased to fund the annual index credits for fixed index annuities and changes in interest rates used to discount the embedded derivative liability. Net income for the years ended December 31, 20162017 and 20142016 was negatively impacted by decreases in the discount rates used to estimate our embedded derivative liabilities, while net income for the year ended December 31, 2015 was positively impacted by increases in the discount rates used to estimate our embedded derivative liabilities. Net income for the year ended December 31, 2014 was also positively impacted by revisions of assumptions used in determining fixed index annuity embedded derivatives that were made in the second quarter of 2014. These revisions, which consisted of changes in the lapse and expected costs of annual call options assumptions, decreased the change in the fair value of embedded derivatives for the year ended December 31, 2014 by $62.6 million, which after related adjustments to deferred sales inducements and deferred policy acquisition costs and income taxes, increased net income for the year ended December 31, 2014 by $14.8 million (see Change in fair value of embedded derivatives).

We periodically revise the key assumptions used in the calculation of amortization of deferred policy acquisition costs and deferred sales inducements retrospectively through an unlocking process when estimates of current or future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products are revised. In addition, we periodically revise the assumptions used in determining reserves held for lifetime income benefit riders as experience develops that is different from our assumptions.
Net income includes effects from unlocking and revisions to assumptions used in determining reserves for lifetime income benefit riders as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Increase (decrease) in amortization of deferred sales inducements$35,760
 $(5,612) $(12,595)$(34,274) $35,760
 $(5,612)
Increase (decrease) in amortization of deferred policy acquisition costs48,164
 (10,970) (35,527)(48,198) 48,164
 (10,970)
Increase in interest sensitive and index product benefits42,002
 18,313
 12,428
21,608
 42,002
 18,313
Increase (decrease) in net income(81,224) (1,117) 22,986
39,196
 (81,224) (1,117)
We review these assumptions quarterly and as a result of these reviews, we madeThe unlocking adjustments to assumptions used in the calculation of2017 decreased amortization of deferred policy acquisition costs by $48.2 million and amortization of deferred sales inducements by $34.3 million. During the third quarter of 2017, the most significant revisions to such assumptions were account balance true-ups which were favorable to us due to stronger index credits than we assumed due to strong equity market performance and adjustments to generally decrease lapse rate assumptions to reflect better persistency experienced than assumed. The favorable impact of the account balance true-ups and lapse rate assumption changes was partially offset by reductions in the firstestimated future gross profits attributable to revisions to assumptions used in determining reserves held for lifetime income benefit riders as well as an increase in estimated expenses associated with a reinsurance agreement with an unaffiliated reinsurer.
The unlocking adjustments in 2016 increased amortization of deferred policy acquisition costs by $48.2 million and third quartersamortization of 2016.deferred sales inducements by $35.8 million. During the first quarter of 2016, we made adjustments to lower future spread assumptions after comparing investment spread assumptions toas actual investment spreads being earned showed investment spread and gross profits being less than what we were assuming in the three months ended December 31, 2015 and March 31, 2016 and determining thatour models due to decreases in the average yield earned on invested assets resulting from the continued low interest rate environment were creating shortfallsenvironment. We made further adjustments in investment spread and gross profits. During the third quarter of 2016 we made adjustments to extend the period of time in which we assume investment spread will grade up to our long-term spread targets by an additional two years as yields obtained on investments purchased in the third quarter of 2016 were much lower than we had anticipated as a result of the overall decline in investment yields that followed the Brexit vote. In addition, during the third quarter of 2016, revisions to assumptions used in determining reserves held for lifetimeliving income benefit riders described below resulted in a decrease in estimated future gross profits.

The most significant revisions to assumptions usedunlocking adjustments in the calculation2015 decreased amortization of deferred policy acquisition costs by $11.0 million and amortization of deferred sales inducements in 2015by $5.6 million and 2014 wereincluded the impact of account balance true-ups as of September 30, 2015, which were favorable to us due to stronger equity market performance than we assumed, favorable adjustments to lapse assumptions to reflect better persistency experienced than assumed and unfavorable adjustments to investment spread to reflect lower spreads being earned than assumed. In 2015, theThe favorable impact of the account balance true-up and lapse assumption change was largely offset by reductions in estimated future gross profits attributable to revisions to the assumptions used in determining reserves held for the lifetime income benefit rider liability described below.riders.
The 2017, 2016 2015 and 20142015 revisions to reserves for lifetime income benefit riders were consistent with unlocking for deferred policy acquisition costs and deferred sales inducements described above. The 2017 revisions were primarily due to the lapse rate assumption changes described above and changes to our account value growth projections. The 2016 revisions were primarily due to actual index credits on policies being lower than projected over the past four quarters. The most significant assumption change generating the 2015 negative impact on net income was an increase to the primary election age to begin receiving lifetime income from 67 to 70 as our experience has shown that age 70 is the most popular age at which policyholders elect to begin receiving lifetime income benefit payments. The lifetime income benefit payments are determined by applying a payout factor to the rider's benefit base. The payout factors vary by the age at the time the lifetime income is elected. In early versions of the rider, the age band for payout factors was 10 years (i.e. 60-69; 70-79). As a result, policyholders have an incentive to defer their lifetime income election until age 70, when the payout factor stepped up. Subsequent versions of the rider reduced the age bands between payout factors to five years and the rider we currently sell has a different payout factor for every age. With these structures, assumption revisions from any further developments in our experience for primary election age should have a smaller impact than what was experienced in 2015.
In 2014, we retired $138 million aggregate principal amount of two issues of convertible notes. The loss on retirement was $12.5 million ($11.5 million after income taxes). In connection with the retirement of the 2015 notes, we entered into early termination agreements for a corresponding amount of the related 2015 notes hedges and the 2015 warrants. The impact of these partial unwinds decreased the change in fair value of derivatives and net income for the year ended December 31, 2014 by $6.3 million and $3.7 million, respectively (see Note 5 to our audited consolidated financial statements).
OperatingNon-GAAP operating income, a non-GAAP financial measure (see reconciliation to net income in Item 6. Selected Consolidated Financial Data) increased 133% to $285.1 million in 2017 and decreased 38% to $122.3 million in 2016 and increased 3% tofrom $195.8 million in 2015 from $190.6 million in 2014.2015.
In addition to net income, we have consistently utilized non-GAAP operating income, a non-GAAP financial measure commonly used in the life insurance industry, as an economic measure to evaluate our financial performance. OperatingNon-GAAP operating income equals net income adjusted to eliminate the impact of items that fluctuate from year to year in a manner unrelated to core operations, and we believe measures excluding their impact are useful in analyzing operating trends. The most significant adjustments to arrive at non-GAAP operating income eliminate the impact of fair value accounting for our fixed index annuity business and are not economic in nature but rather impact the timing of reported results. In addition, 2017 includes a $35.9 million adjustment to arrive at non-GAAP operating income resulting from the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017 and required a revaluation of our net deferred tax assets from 35% to 21%. We believe the combined presentation and evaluation of non-GAAP operating income together with net income provides information that may enhance an investor's understanding of our underlying results and profitability.

OperatingNon-GAAP operating income is not a substitute for net income determined in accordance with GAAP. The adjustments made to derive non-GAAP operating income are important to understanding our overall results from operations and, if evaluated without proper context, non-GAAP operating income possesses material limitations. As an example, we could produce a low level of net income in a given period, despite strong operating performance, if in that period we experience significant net realized losses from our investment portfolio. We could also produce a high level of net income in a given period, despite poor operating performance, if in that period we generate significant net realized gains from our investment portfolio. As an example of another limitation of non-GAAP operating income, it does not include the decrease in cash flows expected to be collected as a result of credit loss OTTI. Therefore, our management reviews net realized investment gains (losses) and analyses of our net investment income, including impacts related to OTTI write-downs, in connection with their review of our investment portfolio. In addition, our management examines net income as part of their review of our overall financial results.
OperatingNon-GAAP operating income in 2017, 2016 2015 and 20142015 includes effects from unlocking and revisions to assumptions used in determining reserves for living income benefit riders as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Increase (decrease) in amortization of deferred sales inducements$36,127
 $(478) $(10,713)$(31,317) $36,127
 $(478)
Increase (decrease) in amortization of deferred policy acquisition costs47,765
 (4,260) (33,027)(43,716) 47,765
 (4,260)
Increase in interest sensitive and index product benefits42,002
 18,313
 12,428
21,608
 42,002
 18,313
Increase (decrease) in operating income(81,202) (8,756) 20,165
Increase (decrease) in non-GAAP operating income34,405
 (81,202) (8,756)
Annuity product charges (surrender charges assessed against policy withdrawals and fees deducted from policyholder account balances for lifetime income benefit riders) increased 16% to $200.5 million in 2017 and 27% to $173.6 million in 2016 and 14% tofrom $136.2 million in 2015 from $119.0 million in 2014.2015. The components of annuity product charges are set forth in the table that follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Surrender charges$51,577
 $46,614
 $47,500
$54,624
 $51,577
 $46,614
Lifetime income benefit riders (LIBR) fees122,002
 89,554
 71,490
145,870
 122,002
 89,554
$173,579
 $136,168
 $118,990
$200,494
 $173,579
 $136,168
          
Withdrawals from annuity policies subject to surrender charges$429,090
 $373,166
 $387,274
$456,084
 $429,090
 $373,166
Average surrender charge collected on withdrawals subject to surrender charges12.0% 12.5% 12.3%12.0% 12.0% 12.5%
          
Fund values on policies subject to LIBR fees$17,809,659
 $14,296,046
 $12,250,068
$20,440,431
 $17,809,659
 $14,296,046
Weighted average per policy LIBR fee0.69% 0.63% 0.58%0.71% 0.69% 0.63%
The increases in annuity product charges were primarily attributable to increases in fees assessed for lifetime income benefit riders due to a larger volume of business in force subject to the fee and and an increase in the average fees being charged due to higher fees on new products as compared to prior periods. See Interest sensitive and index product benefits below for corresponding expense recognized on lifetime income benefit riders. Surrender charges increased in 2017 and 2016 due to an increase in withdrawals from annuity policies subject to surrender charges. Surrender charges decreased in 2015 as withdrawals from annuity policies subject to surrender charges decreased as compared to 2014.prior years.
Net investment income increased 8% to $2.0 billion in 2017 and 9% to $1.8 billion in 2016 and 10% tofrom $1.7 billion in 2015 from $1.5 billion in 2014.2015. The increases were principally attributable to the growth in our annuity business and corresponding increases in our invested assets. Average invested assets excluding derivative instruments (on an amortized cost basis) increased 9% to $44.8 billion in 2017 and 15% to $41.1 billion in 2016 and 14%compared to $35.9 billion in 2015 compared to $31.3 billion in 2014.2015. The average yield earned on average invested assets was 4.51%4.46%, 4.51% and 4.73% for 2017, 2016 and 4.90% for 2016, 2015, and 2014, respectively.
The decrease in yield earned on average invested assets in 2017, 2016 2015 and 20142015 was attributable to investment of new premiums and portfolio cash flows during those periods and 2013 at rates below the overall portfolio yield and higher cash balances.yield. The average yield on fixed income securities purchased and commercial mortgage loans funded was 3.66%4.16%, 3.87%3.66% and 4.22%3.87% for the years ended December 31, 2017, 2016 2015 and 2014,2015, respectively. The average balance for cash and short-term investments was $0.2 billion, $0.9 billion and $0.3 billion in 2017, 2016 and $0.4 billion in 2016, 2015, and 2014, respectively. The average yield on our cash and short-term investments was 0.05%0.55%, 0.07%0.05% and 0.07% in 2017, 2016 2015 in 2014,2015, respectively. The unfavorable impact from these items was partially offset by prepayment and fee income received resulting in additional netnon-trendable investment income of $23.8 million, $26.9 millionitems which added eight, six and $22.3 million,eight basis points to the average yield on invested assets in 2017, 2016 2015 and 2014,2015, respectively.

Change in fair value of derivatives consists of call options purchased to fund annual index credits on fixed index annuities, the 2015 notes hedges related to our 2015 notes and an interest rate swap and interest rate caps that hedge our floating rate subordinated debentures. The components of change in fair value of derivatives are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Call options:          
Gain (loss) on option expiration$(282,574) $(464,027) $707,520
$1,062,328
 $(282,574) $(464,027)
Change in unrealized gains/losses447,603
 136,106
 (185,573)615,955
 447,603
 136,106
2015 notes hedges
 (4,516) (8,934)
 
 (4,516)
Interest rate swap(482) (2,341) (4,863)255
 (482) (2,341)
Interest rate caps(328) (1,368) (3,325)(667) (328) (1,368)
$164,219
 $(336,146) $504,825
$1,677,871
 $164,219
 $(336,146)
The differences between the change in fair value of derivatives between years for call options are primarily due to the performance of the indices upon which our call options are based. A substantial portion of our call options are based upon the S&P 500 Index with the remainder based upon other equity and bond market indices. The range of index appreciation (after applicable caps, participation rates and asset fees) for options expiring during these years is as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
S&P 500 Index  
Point-to-point strategy0.0 - 8.2% 0.0 - 8.9% 1.0 - 11.5%1.0 - 13.3% 0.0 - 8.2% 0.0 - 8.9%
Monthly average strategy0.0 - 8.3% 0.0 - 9.0% 0.8 - 11.1%0.1 - 10.6% 0.0 - 8.3% 0.0 - 9.0%
Monthly point-to-point strategy0.0 - 5.0% 0.0 - 12.1% 0.0 - 19.9%0.0 - 17.0% 0.0 - 5.0% 0.0 - 12.1%
Fixed income (bond index) strategies0.0 - 10.0% 0.0 - 10.0% 0.0 - 10.0%0.0 - 5.9% 0.0 - 10.0% 0.0 - 10.0%
The change in fair value of derivatives is also influenced by the aggregate costs of options purchased. The aggregate cost of options has increased primarily due to an increased amount of fixed index annuities in force. The aggregate cost of options is also influenced by the amount of policyholder funds allocated to the various indices and market volatility which affects option pricing. See Critical Accounting Policies - Policy Liabilities for Fixed Index Annuities.
Our 2015 notes matured and were extinguished on September 15, 2015, and the 2015 notes hedges expired on that same date. The fair value of the 2015 notes hedges changed based upon changes in the price of our common stock, interest rates, stock price volatility, dividend yield and the time to expiration of the 2015 notes hedges. Similarly, the fair value of the conversion option obligation to the holders of the 2015 notes changed based upon these same factors and the conversion option obligation was accounted for as an embedded derivative liability with changes in fair value reported in the Change in fair value of embedded derivatives. The amount of the change in fair value of the 2015 notes hedges was typically equal to the amount of the change in the related embedded derivative liability and there typically was an offsetting expense in the change in fair value of embedded derivatives. Due to the partial unwind agreements we entered into in 2014, the decrease in the change in the fair value of the 2015 notes embedded derivative conversion liability exceeded the decrease in the fair value of the 2015 notes hedges by $10.1 million for the year ended December 31, 2014. See Note 5 to our audited consolidated financial statements for a discussion of the unwind agreements, the 2015 notes hedges and the 2015 notes embedded derivative conversion liability.
Net realized gains (losses) on investments, excluding OTTI losses include gains and losses on the sale of securities and impairment losses on mortgage loans on real estate which fluctuate from year to year due to changes in the interest rate and economic environment and the timing of the sale of investments, as well as gains (losses) recognized on real estate owned due to any sales and impairments on long-lived assets. See Note 3 to our audited consolidated financial statements for a detailed presentation of the types of investments that generated the gains (losses).
Losses on available for sale fixed maturity securities were realized primarily due to strategies to reposition the fixed maturity security portfolio that resulted in improved net investment income, risk or duration profiles as they pertain to our asset liability management. Securities were sold at losses in 2017, 2016 and 2015 due to our long-term fundamental concern with the issuers' ability to meet their future financial obligations. See Note 4 to our audited consolidated financial statements for additional discussion of allowance for credit losses recognized on mortgage loans on real estate.
Net OTTI losses recognized in operations decreased to $4.6 million in 2017 and increased to $22.7 million in 2016 and increased tofrom $19.5 million in 2015 from $2.6 million2015. The impairments recognized in 2014.2017 were primarily on a corporate security with exposure to the industrial sector in Latin America and additional impairments on previously impaired residential mortgage backed securities. The impairments recognized in 2016 were primarily on three corporate securities with exposure to the telecommunications, materials and energy sectors and two asset-backed securities with exposure to the energy sector. The impairments recognized in 2015 were primarily on two corporate securities with exposure to the metals and mining sector and one asset-backed security with exposure to the energy sector. The impairments recognized in 2014 were on residential mortgage backed securities and were principally due to changes of assumptions regarding loss severity of a number of securities we hold which affected our ongoing analysis of expected cash flow projections. See Financial Condition—InvestmentsCondition - Other Than Temporary Impairments and Note 3 to our audited consolidated financial statements for additional discussion of write downs of securities for other than temporary impairments.

Interest sensitive and index product benefits increased 179% to $2.0 billion in 2017 and decreased 25% to $0.7 billion in 2016 and decreased 34% tofrom $1.0 billion in 2015 from $1.5 billion in 2014.2015. The components of interest sensitive and index product benefits are summarized as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Index credits on index policies$267,995
 $587,705
 $1,096,504
$1,594,722
 $267,995
 $587,705
Interest credited (including changes in minimum guaranteed interest for fixed index annuities)276,032
 258,870
 284,577
257,896
 276,032
 258,870
Lifetime income benefit riders181,445
 121,478
 92,619
171,050
 181,445
 121,478
$725,472
 $968,053
 $1,473,700
$2,023,668
 $725,472
 $968,053
The changes in index credits were attributable to changes in the level of appreciation of the underlying indices (see discussion above under Change in fair value of derivatives) and the amount of funds allocated by policyholders to the respective index options. Total proceeds received upon expiration of the call options purchased to fund the annual index credits were $1.6 billion, $272.3 million and $602.4 million and $1.1 billion for the years ended December 31, 2017, 2016 and 2015, and 2014, respectively. The decrease in interest credited in 2017 was primarily due to a decrease in the average rate credited to the annuity liabilities outstanding receiving a fixed rate of interest. The increase in interest credited in 2016 was primarily due to an increase in the total account value of annuity liabilities outstanding receiving a fixed rate of interest. The decrease in interest credited in 2015 was primarily due to a decrease in the average rate credited to the annuity liabilities outstanding receiving a fixed rate of interest. The average amount of annuity liabilities outstanding (net of annuity liabilities ceded under coinsurance agreements) increased 8% to $46.8 billion in 2017 and 14% to $43.5 billion in 2016 and 14% tofrom $38.1 billion in 2015 from $33.4 billion in 2014.2015. The increasesdecrease in benefits recognized for lifetime income benefit riders werein 2017 was due to the impact of revisions to assumptions used in determining reserves held for lifetime income benefit riders being less in 2017 than it was in 2016 which was partially offset by an increase in the number of policies with lifetime income benefit riders which correlates to the increase in fees discussed in Annuity product charges. The 2016 increase in benefits recognized for lifetime income benefit riders was due to increases in the number of policies with lifetime income benefit riders and correlates to the increase in fees discussed in Annuity product charges, and the impact of revisions to assumptions used in determining reserves held for lifetime income benefit riders. See Net income above for discussion of the impact of changes in the assumptions used in determining reserves for lifetime income benefit riders for the years ended December 31, 2016, 2015 and 2014.
The reserve (net of coinsurance ceded) held for lifetime income benefit riders was $533.4 million and $352.0 million at December 31,2017, 2016 and 2015, respectively.2015.
Amortization of deferred sales inducements, in general, has been increasing each year due to growth in our annuity business and the deferral of sales inducements incurred with respect to sales of premium bonus annuity products. Bonus products represented 88%87%, 89%88% and 89% of our net annuity deposits duringaccount values at December 31, 2017, 2016 2015 and 2014,2015, respectively. The increases in amortization from these factors have been affected by amortization associated with (1) fair value accounting for derivatives and embedded derivatives utilized in our fixed index annuity business, (2) net realized gains (losses) on investments and net OTTI losses recognized in operations and (3) changes in litigation reserves. Fair value accounting for derivatives and embedded derivatives utilized in our fixed index annuity business creates differences in the recognition of revenues and expenses from derivative instruments including the embedded derivative liabilities in our fixed index annuity contracts. The change in fair value of the embedded derivatives will not correspond to the change in fair value of the derivatives (purchased call options), because the purchased call options are one-year options while the options valued in the fair value of embedded derivatives cover the expected lives of the contracts which typically exceed ten years. Amortization of deferred sales inducements is summarized as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Amortization of deferred sales inducements before gross profit adjustments$274,309
 $209,051
 $174,799
$240,562
 $274,309
 $209,051
Gross profit adjustments:          
Fair value accounting for derivatives and embedded derivatives(21,678) 1,976
 (42,865)(64,219) (21,678) 1,976
Net realized gains (losses) on investments, net OTTI losses recognized in operations
and changes in litigation reserves
(1,465) (1,637) (515)269
 (1,465) (1,637)
Amortization of deferred sales inducements after gross profit adjustments$251,166
 $209,390
 $131,419
$176,612
 $251,166
 $209,390
See Net income and OperatingNon-GAAP operating income, a non-GAAP financial measure, above for discussion of the impact of unlocking on amortization of deferred sales inducements for the years ended December 31, 2017, 2016 2015 and 2014.2015. See Critical Accounting Policies—Deferred Policy Acquisition Costs and Deferred Sales Inducements.

Change in fair value of embedded derivatives includes changes in the fair value of our fixed index annuity embedded derivatives and changes in the fair value of the embedded derivative related to the conversion option of our 2015 notes and, in 2014, our 2029 notes (see Notes 5 and 9 to our audited consolidated financial statements). The components of change in fair value of embedded derivatives are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Fixed index annuities—embedded derivatives$145,045
 $(825,668) $(532,337)$174,154
 $145,045
 $(825,668)
Other changes in difference between policy benefit reserves computed using derivative accounting vs. long-duration contracts accounting398,420
 365,486
 579,885
745,581
 398,420
 365,486
2015 notes embedded conversion derivative
 (4,516) (19,036)
 
 (4,516)
2029 notes embedded conversion derivative
 
 3,809
$543,465
 $(464,698) $32,321
$919,735
 $543,465
 $(464,698)
The change in fair value of the fixed index annuity embedded derivatives resulted from (i) changes in the expected index credits on the next policy anniversary dates, which are related to the change in fair value of the call options acquired to fund those index credits discussed above in Change in fair value of derivatives; (ii) changes in discount rates used in estimating our embedded derivative liabilities; and (iii) the growth in the host component of the policy liability. The amounts presented as "Other changes in difference between policy benefit reserves computed using derivative accounting vs. long-duration contracts accounting" represents the total change in the difference between policy benefit reserves for fixed index annuities computed under the derivative accounting standard and the long-duration contracts accounting standard at each balance sheet date, less the change in fair value of our fixed index annuities embedded derivative. See Critical Accounting Policies—Policy Liabilities for Fixed Index Annuities. The primary reasons for the increase in the change in fair value of the fixed index annuity embedded derivatives for 2017 were a higher level on index credits during 2017 as compared to 2016 and larger decreases in the discount rates used in estimating the fair value of the liability during 2017 as compared to 2016. The primary reasons for the increase in the change in fair value of the fixed index annuity embedded derivatives for 2016 were decreases in the discount rates used in estimating our embedded derivative liabilities and increases in the expected index credits on the next policy anniversary dates resulting from increases in the fair value of the call options acquired to fund these index credits during 2016 as compared to 2015. The primary reasons for the decrease in the change in fair value of the fixed index annuity embedded derivatives for 2015 were increases in the discount rates used in estimating our embedded derivative liabilities and decreases in the expected index credits on the next policy anniversary dates resulting from decreases in the fair value of the call options acquired to fund these index credits during 2015 as compared to 2014. The discount rates used in estimating our embedded derivative liabilities fluctuate from year to year based on changes in the general level of interest rates. See Net income above for discussion of the impact of assumption changes for the fixed index annuity embedded derivatives in 2014.rates and credit spreads.
As discussed above under Change in fair value of derivatives, the fair value of the 2015 notes embedded conversion derivative changes based upon the same factors effecting the changes in the 2015 notes hedges and, in general, the amount for the change in the fair value of the 2015 notes embedded conversion derivative was equal to the amount for the change in fair value of the 2015 notes hedges. See discussion above for explanation of the difference in these amounts for 2014. Prior to November 2014, the conversion option in the 2029 convertible notes was expected to be settled in net shares of our common stock and the conversion option in the 2029 notes was accounted for as equity. In November 2014, we issued a notice of mandatory redemption of all of the 2029 notes that were outstanding at the time the notice was issued and amended the terms of the indenture governing the 2029 notes to provide the holders with the option of receiving the conversion value of their notes entirely in cash rather than cash for the principal amount and net shares for the portion of the conversion value that exceeds the principal amount. As a result of this mandatory redemption and the change in terms, $32.1 million principal amount of the 2029 notes was converted into $69.4 million in cash and $24.6 million in shares of our common stock (897,548 shares). The amendment to the conversion terms resulted in a reclassification of the fair value of the conversion premium for the 2029 notes from equity to an embedded conversion derivative liability. The fair value of the conversion premium on the date of reclassification was $58.1 million. We applied fair value accounting to the embedded derivative liability from the date of reclassification to the dates of settlement of the conversions of the 2029 notes and recognized as expense the $3.8 million increase in the fair value of the embedded derivative liability.
Interest expense on notes and loan payable increased 8% to $30.4 million in 2017 and decreased 2% to $28.2 million in 2016 and decreased 21% tofrom $28.8 million in 2015 from $36.42015. Interest expense by debt instrument is as follows:
 Year Ended December 31,
 2017 2016 2015
 (Dollars in thousands)
2027 Notes$13,801
 $
 $
2021 Notes15,024
 27,540
 27,465
Convertible senior notes due 2015
 
 1,384
Term loan due 20191,543
 708
 
 $30,368
 $28,248
 $28,849
The increase in interest expense in 2017 was attributable to interest expense on the $100 million variable rate term loan originated on September 30, 2016 and prepaid on June 16, 2017 and interest expense on the 2027 Notes issued on June 16, 2017 which were partially offset by a decrease in 2014.interest expense as a result of the redemption of the 2021 Notes on July 17, 2017. The decreasesdecrease in interest expense in 2016 and 2015 arewas primarily attributable to the extinguishment of $22 million and $138 million aggregate principal amount of our convertible senior notes in 2015, and 2014, respectively, which was partially offset in 2016 by interest expense on the $100 million variable rate term loan originated on September 30, 2016. See Note 9 to our audited consolidated financial statements.


Amortization of deferred policy acquisition costs, in general, has been increasing each year due to the growth in our annuity business and the deferral of policy acquisition costs incurred with respect to sales of annuity products. The increases in amortization from these factors have been affected by amortization associated with (1) fair value accounting for derivatives and embedded derivatives utilized in our fixed index annuity business, (2) net realized gains (losses) on investments and net OTTI losses recognized in operations and (3) changes in litigation reserves. As discussed above, fair value accounting for derivatives and embedded derivatives utilized in our fixed index annuity business creates differences in the recognition of revenues and expenses from derivative instruments including the embedded derivative liabilities in our fixed index annuity contracts. Amortization of deferred policy acquisition costs is summarized as follows:

Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Amortization of deferred policy acquisition costs before gross profit adjustments$387,089
 $293,676
 $239,369
$340,191
 $387,089
 $293,676
Gross profit adjustments:          
Fair value accounting for derivatives and embedded derivatives(11,447) (5,611) (74,900)(84,744) (11,447) (5,611)
Net realized gains (losses) on investments, net OTTI losses recognized in operations
and changes in litigation reserves
(1,630) (1,951) (891)517
 (1,630) (1,951)
Amortization of deferred policy acquisition costs after gross profit adjustments$374,012
 $286,114
 $163,578
$255,964
 $374,012
 $286,114
See Net income and Operatingnon-GAAP operating income, a non-GAAP financial measure, above for discussion of the impact of unlocking on amortization of deferred policy acquisition costs for the years ended December 31, 2017, 2016 2015 and 2014.2015. See Critical Accounting Policies—Deferred Policy Acquisition Costs and Deferred Sales Inducements.
Other operating costs and expenses increased 9% to $111.7 million in 2017 and increased 6% to $102.2 million in 2016 and increased 18% tofrom $96.2 million in 2015 from $81.6 million in 2014 and are summarized as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Salary and benefits$53,479
 $48,328
 $43,018
$58,043
 $53,479
 $48,328
Risk charges28,276
 21,950
 17,159
29,104
 28,276
 21,950
Other20,476
 25,940
 21,407
24,544
 20,476
 25,940
Total other operating costs and expenses$102,231
 $96,218
 $81,584
$111,691
 $102,231
 $96,218
Salary and benefits expense increased in 2017 as compared to 2016 as a result of an increase in salary and benefits of $3.3 million due to an increased number of employees related to our growth, an increase of $3.7 million related to expense recognized under our short-term incentive compensation program and other bonus programs as a result of the short-term incentive compensation program being paid out at a higher percentage of target than in 2016 and an increase of $0.8 million related to a deferred compensation liability that is based on the value of our common stock. These increases were partially offset by a decrease of $3.2 million in expenses related to a retirement agreement with our former executive chairman.
Salary and benefits expense increased in 2016 as compared to 2015 as a result of increase in salary and benefits of $6.6 million due to an increased number of employees related to our growth as well as an expense of $2.6 million related to assumption changes and the execution of an amended and restated retirement agreement with our Executive Chairman. These 2016 increases were partially offset by a decrease of $3.9 million related to expense recognized under our short-term incentive compensation program and other bonus programs during 2016 as compared to 2015 primarily as a result of the short-term incentive compensation program being paid out at a lower percentage of target in 2016 than in 2015. Salary and benefits expense increased in 2015 as compared to 2014 as a result of an increase in salary and benefits of $2.9 million due to an increased number of employees related to our growth. In addition, salary and benefits expense increased in 2015 as compared to 2014 as a result of an increase of $3.0 million related to expense recognized under our short-term incentive compensation program and other bonus programs primarily as a result of the short-term incentive compensation program being paid out at a higher percentage of target in 2015 than in 2014. These 2015 increases were offset by a decrease of $0.8 million related to compensation costs that vary based on the Company's stock price.
The increases in reinsurance risk charges expense during 20162017 and 20152016 were due to the growth in our policyholder liabilities subject to a reinsurance agreement pursuant to which we cede excess regulatory reserves to an unaffiliated reinsurer. The increase in risk charge expense in 2017 due to growth in the policyholder liabilities subject to the reinsurance was partially offset by a lower risk charge percentage which was included in an October 1, 2016 amendment to the reinsurance agreement. The regulatory reserves ceded at December 31, 2017, 2016 and 2015 and 2014 were $737.3 million, $638.1 million and $480.7 million, respectively.
Other expenses increased in 2017 as compared to 2016 due primarily to 2016 benefiting from the release of a litigation liability of $2.8 million and $322.5 million, respectively.the release of a guaranty fund assessment liability of $2.3 million. Other expenses adjusted for these nonrecurring items from 2016 decreased in 2017 as compared to 2016 due to decreases in general expenses that vary from period to period based on the level of annuity deposits collected.
Other expenses decreased in 2016 as compared to 2015 as 2016 benefited from the release of a litigation liability of $2.8 million and the release of a guaranty fund assessment liability of $2.3 million.
Other expenses increased in 2015 as compared to 2014 due to an increase in general expenses related to our growth and strong sales levels achieved in 2015. In addition, 2015 other expenses increased as compared to 2014, as 2014 benefited from reductions in accrued liabilities for litigation and guaranty fund assessment accruals of $3.2 million.
Income tax expense increased in 2017 due to changes in income before income taxes and the impact of the Tax Cuts and Jobs Act of 2017 ("Tax Reform") and decreased in 2016 and increased in 2015 primarily because of thedue to changes in income before income taxes. The effective income tax rates were 36.1%44.8%, 36.1% and 34.8% for 2017, 2016 and 35.7% for 2016, 2015, and 2014, respectively.

Income tax expense and the resulting effective tax rate are based upon two components of income before income taxes ("pretax income") that are taxed at different tax rates. Life insurance income is generally taxed at an effective rate of approximately 35.4%35.6% reflecting the absence of state income taxes for substantially all of the states that the life insurance subsidiaries do business in. The income (loss) for the parent company and other non-life insurance subsidiaries (the "non-life insurance group") is generally taxed at an effective tax rate of 41.5% reflecting the combined federal / state income tax rates. The effective tax rates resulting from the combination of the income tax provisions for the life / non-life sources of income (loss) vary from year to year based primarily on the relative size of pretax income (loss) from the two sources.
Tax expense for the year ended December 31, 2017 was increased by $35.9 million related to the revaluation of our net deferred tax assets using the newly enacted federal tax rate as a result of Tax Reform. The effective tax rate for 2017 adjusted to exclude the impact of Tax Reform was 32.3%
The effective tax rate adjusted to exclude the impact of Tax Reform decreased in 2017 as compared to 2016 as the portion of taxable income from the non-life insurance group decreased significantly and the level of permanent tax adjustments, including tax exempt investment income, compared to pretax income increased as compared to 2016. In addition, the effective income tax rate for 2017 was impacted by a change in accounting for income taxes related to share-based compensation that reduced income tax expense by approximately $2.8 million during 2017. The effective income tax rate increased in 2016 because the portion of total taxable income from non-life insurance subsidiaries increased significantly, as well as tax exempt investment income decreasing significantly from the prior two years. The effective income tax rate decreased in 2015 because a portion of the 2014 parent company's loss on extinguishment of debt was not deductible resulting in an effective tax rate on the parent company's pretax loss that was less than 41.5%.year.

Financial Condition
Investments
Our investment strategy is to maintain a predominantly investment grade fixed income portfolio, provide adequate liquidity to meet our cash obligations to policyholders and others and maximize current income and total investment return through active investment management. Consistent with this strategy, our investments principally consist of fixed maturity securities and mortgage loans on real estate.
Insurance statutes regulate the type of investments that our life subsidiaries are permitted to make and limit the amount of funds that may be used for any one type of investment. In light of these statutes and regulations and our business and investment strategy, we generally seek to invest in United States government and government-sponsored agency securities, corporate securities, residential and commercial mortgage backed securities, other asset backed securities and United States municipalities, states and territories securities rated investment grade by established nationally recognized statistical rating organizations ("NRSRO's") or in securities of comparable investment quality, if not rated and commercial mortgage loans on real estate.
The composition of our investment portfolio is summarized as follows:
December 31,December 31,
2016 20152017 2016
Carrying
Amount
 Percent 
Carrying
Amount
 Percent
Carrying
Amount
 Percent 
Carrying
Amount
 Percent
(Dollars in thousands)(Dollars in thousands)
Fixed maturity securities:              
United States Government full faith and credit$11,805
 % $471,256
 1.2%$11,876
 % $11,805
 %
United States Government sponsored agencies1,344,787
 3.0% 1,398,611
 3.5%1,305,017
 2.6% 1,344,787
 3.0%
United States municipalities, states and territories3,926,950
 8.8% 3,755,367
 9.5%4,166,812
 8.3% 3,926,950
 8.8%
Foreign government obligations232,233
 0.5% 212,565
 0.5%239,360
 0.5% 236,341
 0.5%
Corporate securities27,195,351
 60.8% 23,879,016
 60.3%29,956,012
 59.6% 27,191,243
 60.8%
Residential mortgage backed securities1,254,835
 2.8% 1,462,072
 3.7%1,105,567
 2.2% 1,254,835
 2.8%
Commercial mortgage backed securities5,365,235
 12.0% 4,174,396
 10.5%5,544,850
 11.0% 5,365,235
 12.0%
Other asset backed securities1,806,123
 4.0% 1,145,178
 2.9%3,120,536
 6.2% 1,806,123
 4.0%
Total fixed maturity securities41,137,319
 91.9% 36,498,461
 92.1%45,450,030
 90.4% 41,137,319
 91.9%
Mortgage loans on real estate2,480,956
 5.5% 2,435,257
 6.2%2,665,531
 5.3% 2,480,956
 5.5%
Derivative instruments830,519
 1.9% 337,256
 0.9%1,568,380
 3.1% 830,519
 1.9%
Other investments308,774
 0.7% 299,358
 0.8%616,764
 1.2% 308,774
 0.7%
$44,757,568
 100.0% $39,570,332
 100.0%$50,300,705
 100.0% $44,757,568
 100.0%
Fixed Maturity Securities
Our fixed maturity security portfolio is managed to minimize risks such as interest rate changes and defaults or impairments while earning a sufficient and stable return on our investments. The largest portion of our fixed maturity securities are in investment grade (NAIC designation 1 or 2) publicly traded or privately placed corporate securities.

A summary of our fixed maturity securities by NRSRO ratings is as follows:
 December 31, December 31,
 2016 2015 2017 2016
Rating Agency Rating 
Carrying
Amount
 Percent of Fixed Maturity Securities 
Carrying
Amount
 Percent of Fixed Maturity Securities 
Carrying
Amount
 Percent of Fixed Maturity Securities 
Carrying
Amount
 Percent of Fixed Maturity Securities
 (Dollars in thousands) (Dollars in thousands)
Aaa/Aa/A $26,431,700
 64.3% $23,724,648
 65.0% $27,909,879
 61.4% $26,431,700
 64.3%
Baa 13,002,964
 31.6% 11,491,609
 31.5% 16,048,610
 35.3% 13,002,964
 31.6%
Total investment grade 39,434,664
 95.9% 35,216,257
 96.5% 43,958,489
 96.7% 39,434,664
 95.9%
Ba 1,048,379
 2.5% 657,760
 1.8% 1,035,676
 2.3% 1,048,379
 2.5%
B 155,619
 0.4% 68,712
 0.2% 130,857
 0.3% 155,619
 0.4%
Caa 79,763
 0.2% 91,998
 0.3% 134,586
 0.3% 79,763
 0.2%
Ca and lower 418,894
 1.0% 463,734
 1.2% 190,422
 0.4% 418,894
 1.0%
Total below investment grade 1,702,655
 4.1% 1,282,204
 3.5% 1,491,541
 3.3% 1,702,655
 4.1%
 $41,137,319
 100.0% $36,498,461
 100.0% $45,450,030
 100.0% $41,137,319
 100.0%
The NAIC's Securities Valuation Office ("SVO") is responsible for the day-to-day credit quality assessment and the valuation of fixed maturity securities owned by state regulated insurance companies. The purpose of such assessment and valuation is for determining regulatory capital requirements and regulatory reporting. Insurance companies report ownership to the SVO when such securities are eligible for regulatory filings. The SVO conducts credit analysis on these securities for the purpose of assigning aan NAIC designation and/or unit price. Typically, if a security has been rated by aan NRSRO, the SVO utilizes that rating and assigns aan NAIC designation based upon the following system:
NAIC Designation NRSRO Equivalent Rating
1 Aaa/Aa/A
2 Baa
3 Ba
4 B
5 Caa
6 Ca and lower
For most of the bonds held in our portfolio the NAIC designation matches the NRSRO equivalent rating. However, for certain loan-backed and structured securities, as defined by the NAIC, the NAIC rating is not always equivalent to the NRSRO rating presented in the previous table. The NAIC has adopted revised rating methodologies for certain loan-backed and structured securities comprised of non-agency residential mortgage backed securities ("RMBS") and commercial mortgage backed securities ("CMBS"). The NAIC’s objective with the revised rating methodologies for these structured securities is to increase the accuracy in assessing expected losses and use the improved assessment to determine a more appropriate capital requirement for such structured securities. The revised methodologies reduce regulatory reliance on rating agencies and allow for greater regulatory input into the assumptions used to estimate expected losses from structured securities.
The use of this process by the SVO may result in certain non-agency RMBS and CMBS being assigned aan NAIC designation that is higher than the equivalent NRSRO rating. The NAIC designations for non-agency RMBS and CMBS are based on security level expected losses as modeled by an independent third party (engaged by the NAIC) and the statutory carrying value of the security, including any purchase discounts or impairment charges previously recognized. Evaluation of non-agency RMBS and CMBS held by insurers using the revised NAIC rating methodologies is performed on an annual basis.
As stated previously, our fixed maturity security portfolio is managed to minimize risks such as defaults or impairments while earning a sufficient and stable return on our investments. Our strategy has been to invest primarily in investment grade fixed maturity securities. Investment grade is NAIC 1 and 2 securities and Baa3/BBB- and better securities on the NRSRO scale. This strategy meets the objective of minimizing risk while also managing asset capital charges on a regulatory capital basis.

A summary of our fixed maturity securities by NAIC designation is as follows:
 December 31, 2016 December 31, 2015 December 31, 2017 December 31, 2016
NAIC
Designation
 
Amortized
Cost
 Fair Value 
Carrying
Amount
 
Percentage
of Total
Carrying
Amount
 
Amortized
Cost
 Fair Value 
Carrying
Amount
 
Percentage
of Total
Carrying
Amount
 
Amortized
Cost
 Fair Value 
Carrying
Amount
 
Percentage
of Total
Carrying
Amount
 
Amortized
Cost
 Fair Value 
Carrying
Amount
 
Percentage
of Total
Carrying
Amount
 (Dollars in thousands)   (Dollars in thousands)   (Dollars in thousands)   (Dollars in thousands)  
1 $25,607,268
 $26,507,798
 $26,507,798
 64.5% $23,363,259
 $24,207,801
 $24,207,801
 66.3% $26,669,427
 $28,274,379
 $28,274,379
 62.2% $25,607,268
 $26,507,798
 $26,507,798
 64.5%
2 13,037,592
 13,295,648
 13,295,648
 32.3% 11,709,730
 11,589,325
 11,589,325
 31.8% 15,198,551
 15,869,219
 15,869,219
 34.9% 13,037,592
 13,295,648
 13,295,648
 32.3%
3 1,201,059
 1,155,702
 1,163,761
 2.8% 758,531
 643,293
 654,538
 1.8% 1,161,737
 1,157,420
 1,158,001
 2.5% 1,201,059
 1,155,702
 1,163,761
 2.8%
4 154,226
 137,188
 137,188
 0.3% 60,480
 44,312
 44,312
 0.1% 134,838
 117,542
 117,542
 0.3% 154,226
 137,188
 137,188
 0.3%
5 17,475
 24,664
 24,664
 0.1% 
 
 
 % 17,015
 20,927
 20,927
 0.1% 17,475
 24,664
 24,664
 0.1%
6 13,160
 8,260
 8,260
 % 8,332
 2,485
 2,485
 % 12,232
 9,962
 9,962
 % 13,160
 8,260
 8,260
 %
 $40,030,780
 $41,129,260
 $41,137,319
 100.0% $35,900,332
 $36,487,216
 $36,498,461
 100.0% $43,193,800
 $45,449,449
 $45,450,030
 100.0% $40,030,780
 $41,129,260
 $41,137,319
 100.0%
The amortized cost and fair value of fixed maturity securities at December 31, 2016,2017, by contractual maturity are presented in Note 3 to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.

Unrealized Losses
The amortized cost and fair value of fixed maturity securities that were in an unrealized loss position were as follows:
Number of
Securities
 
Amortized
Cost
 
Unrealized
Losses
 Fair Value
Number of
Securities
 
Amortized
Cost
 
Unrealized
Losses
 Fair Value
(Dollars in thousands)
December 31, 2017       
Fixed maturity securities, available for sale:       
United States Government full faith and credit4
 $8,443
 $(147) $8,296
United States Government sponsored agencies18
 1,035,489
 (31,730) 1,003,759
United States municipalities, states and territories48
 176,831
 (3,596) 173,235
Foreign government obligations2
 64,313
 (2,025) 62,288
Corporate securities:  
    
Finance, insurance and real estate92
 1,090,077
 (33,178) 1,056,899
Manufacturing, construction and mining55
 468,505
 (14,324) 454,181
Utilities and related sectors63
 657,599
 (13,000) 644,599
Wholesale/retail trade31
 344,196
 (12,620) 331,576
Services, media and other165
 1,693,343
 (72,565) 1,620,778
Residential mortgage backed securities20
 75,159
 (2,471) 72,688
Commercial mortgage backed securities310
 2,473,034
 (69,840) 2,403,194
Other asset backed securities146
 996,531
 (13,405) 983,126
954
 $9,083,520
 $(268,901) $8,814,619
Fixed maturity securities, held for investment:       
Corporate security:       
Insurance1
 $77,041
 $(581) $76,460
(Dollars in thousands)       
December 31, 2016              
Fixed maturity securities, available for sale:              
United States Government full faith and credit3
 $7,693
 $(288) $7,405
3
 $7,693
 $(288) $7,405
United States Government sponsored agencies18
 1,042,461
 (46,913) 995,548
18
 1,042,461
 (46,913) 995,548
United States municipalities, states and territories113
 485,802
 (22,393) 463,409
113
 485,802
 (22,393) 463,409
Foreign government obligations4
 54,626
 (5,080) 49,546
4
 54,626
 (5,080) 49,546
Corporate securities:  
      
    
Finance, insurance and real estate208
 2,501,744
 (88,911) 2,412,833
175
 2,101,158
 (78,144) 2,023,014
Manufacturing, construction and mining315
 3,407,651
 (148,526) 3,259,125
155
 1,568,588
 (57,577) 1,511,011
Utilities and related sectors170
 1,871,090
 (69,263) 1,801,827
137
 1,511,082
 (50,835) 1,460,247
Wholesale/retail trade48
 469,190
 (15,172) 454,018
63
 687,650
 (20,810) 666,840
Services, media and other90
 1,036,586
 (46,901) 989,685
301
 3,417,783
 (161,407) 3,256,376
Residential mortgage backed securities25
 87,169
 (3,554) 83,615
25
 87,169
 (3,554) 83,615
Commercial mortgage backed securities407
 3,266,304
 (117,014) 3,149,290
407
 3,266,304
 (117,014) 3,149,290
Other asset backed securities112
 918,403
 (20,703) 897,700
112
 918,403
 (20,703) 897,700
1,513
 $15,148,719
 $(584,718) $14,564,001
1,513
 $15,148,719
 $(584,718) $14,564,001
Fixed maturity securities, held for investment:              
Corporate security:              
Insurance1
 $76,825
 $(8,059) $68,766
1
 $76,825
 $(8,059) $68,766
       
December 31, 2015       
Fixed maturity securities, available for sale:       
United States Government full faith and credit4
 $38,029
 $(299) $37,730
United States Government sponsored agencies21
 971,462
 (14,409) 957,053
United States municipalities, states and territories76
 273,297
 (8,628) 264,669
Foreign government obligations6
 69,364
 (10,935) 58,429
Corporate securities:  
    
Finance, insurance and real estate145
 2,201,597
 (74,462) 2,127,135
Manufacturing, construction and mining334
 4,271,655
 (377,459) 3,894,196
Utilities and related sectors216
 2,499,341
 (161,505) 2,337,836
Wholesale/retail trade43
 537,720
 (25,988) 511,732
Services, media and other101
 1,112,071
 (43,010) 1,069,061
Residential mortgage backed securities34
 172,697
 (3,489) 169,208
Commercial mortgage backed securities222
 2,796,286
 (105,281) 2,691,005
Other asset backed securities43
 523,592
 (19,880) 503,712
1,245
 $15,467,111
 $(845,345) $14,621,766
Fixed maturity securities, held for investment:       
Corporate security:       
Insurance1
 $76,622
 $(11,245) $65,377
Unrealized losses decreased $263.8 million from $856.6 million at December 31, 2015 to $592.8 million at December 31, 2016. The decrease in unrealized losses from December 31, 2016 to 2017 was primarily due to a decrease in interest rates in addition to price improvements in the energy and metals & mining securitiesdue to tighter credit spreads during the year ended December 31, 2016.2017. The 10-year U.S. Treasury yield rates at December 31, 2017 and 2016 were 2.40% and 20152.45%, respectively. The 30-year U.S. Treasury yields at December 31, 2017 and 2016 were 2.45%2.74% and 2.27%3.06%, respectively.

The following table sets forth the composition by credit quality (NAIC designation) of fixed maturity securities with gross unrealized losses:
NAIC Designation 
Carrying Value of
Securities with
Gross Unrealized
Losses
 
Percent of
Total
 
Gross
Unrealized
Losses
 
Percent of
Total
 
Carrying Value of
Securities with
Gross Unrealized
Losses
 
Percent of
Total
 
Gross
Unrealized
Losses
 
Percent of
Total
 (Dollars in thousands)
December 31, 2017        
1 $5,433,608
 61.1% $(158,991) 59.0%
2 2,809,981
 31.6% (64,369) 23.9%
3 540,320
 6.1% (23,166) 8.6%
4 94,004
 1.1% (17,972) 6.7%
5 11,130
 0.1% (1,460) 0.5%
6 2,617
 % (3,524) 1.3%
 $8,891,660
 100.0% $(269,482) 100.0%
 (Dollars in thousands)        
December 31, 2016                
1 $8,754,856
 59.8% $(330,920) 55.8% $8,754,856
 59.8% $(330,920) 55.8%
2 5,091,437
 34.8% (176,557) 29.8% 5,091,437
 34.8% (176,557) 29.8%
3 657,549
 4.5% (60,689) 10.3% 657,549
 4.5% (60,689) 10.3%
4 119,986
 0.8% (17,786) 3.0% 119,986
 0.8% (17,786) 3.0%
5 8,744
 0.1% (1,920) 0.3% 8,744
 0.1% (1,920) 0.3%
6 8,254
 % (4,905) 0.8% 8,254
 % (4,905) 0.8%
 $14,640,826
 100.0% $(592,777) 100.0% $14,640,826
 100.0% $(592,777) 100.0%
        
December 31, 2015        
1 $8,278,102
 56.3% $(280,209) 32.7%
2 5,813,570
 39.6% (436,543) 51.0%
3 560,199
 3.8% (117,814) 13.7%
4 44,041
 0.3% (16,168) 1.9%
5 
 % 
 %
6 2,476
 % (5,856) 0.7%
 $14,698,388
 100.0% $(856,590) 100.0%
Our investments' gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities (consisting of 1,514955 and 1,2461,514 securities, respectively) have been in a continuous unrealized loss position at December 31, 20162017 and 2015,2016, along with a description of the factors causing the unrealized losses is presented in Note 3 to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.

The amortized cost and fair value of fixed maturity securities in an unrealized loss position and the number of months in a continuous unrealized loss position (fixed maturity securities that carry an NRSRO rating of BBB/Baa or higher are considered investment grade) were as follows:
Number of
Securities
 
Amortized
Cost
 Fair Value 
Gross
Unrealized
Losses
Number of
Securities
 
Amortized
Cost
 Fair Value 
Gross
Unrealized
Losses
  (Dollars in thousands)  (Dollars in thousands)
December 31, 2016       
December 31, 2017       
Fixed maturity securities:              
Investment grade:              
Less than six months1,265
 $12,767,396
 $12,374,177
 $(393,219)409
 $3,550,774
 $3,520,164
 $(30,610)
Six months or more and less than twelve months69
 669,022
 621,784
 (47,238)27
 257,924
 249,690
 (8,234)
Twelve months or greater90
 970,424
 901,674
 (68,750)430
 4,668,838
 4,486,239
 (182,599)
Total investment grade1,424
 14,406,842
 13,897,635
 (509,207)866
 8,477,536
 8,256,093
 (221,443)
Below investment grade:              
Less than six months15
 132,087
 126,236
 (5,851)32
 201,885
 194,821
 (7,064)
Six months or more and less than twelve months10
 80,535
 72,830
 (7,705)12
 36,595
 34,619
 (1,976)
Twelve months or greater65
 606,080
 536,066
 (70,014)45
 444,545
 405,546
 (38,999)
Total below investment grade90
 818,702
 735,132
 (83,570)89
 683,025
 634,986
 (48,039)
1,514
 $15,225,544
 $14,632,767
 $(592,777)955
 $9,160,561
 $8,891,079
 $(269,482)
December 31, 2015       
December 31, 2016       
Fixed maturity securities              
Investment grade:              
Less than six months588
 $7,395,125
 $7,193,059
 $(202,066)1,265
 $12,767,396
 $12,374,177
 $(393,219)
Six months or more and less than twelve months484
 6,799,113
 6,388,844
 (410,268)69
 669,022
 621,784
 (47,238)
Twelve months or greater44
 592,600
 484,646
 (107,954)90
 970,424
 901,674
 (68,750)
Total investment grade1,116
 14,786,838
 14,066,549
 (720,288)1,424
 14,406,842
 13,897,635
 (509,207)
Below investment grade:              
Less than six months87
 297,879
 279,947
 (17,933)15
 132,087
 126,236
 (5,851)
Six months or more and less than twelve months15
 175,603
 148,337
 (27,266)10
 80,535
 72,830
 (7,705)
Twelve months or greater28
 283,413
 192,310
 (91,103)65
 606,080
 536,066
 (70,014)
Total below investment grade130
 756,895
 620,594
 (136,302)90
 818,702
 735,132
 (83,570)
1,246
 $15,543,733
 $14,687,143
 $(856,590)1,514
 $15,225,544
 $14,632,767
 $(592,777)

The amortized cost and fair value of fixed maturity securities (excluding United States Government and United States Government sponsored agency securities) segregated by investment grade (NRSRO rating of BBB/Baa or higher) and below investment grade that had unrealized losses greater than 20% and the number of months in a continuous unrealized loss position were as follows:
Number of
Securities
 
Amortized
Cost
 
Fair
Value
 
Gross
Unrealized
Losses
Number of
Securities
 
Amortized
Cost
 
Fair
Value
 
Gross
Unrealized
Losses
  (Dollars in thousands)
December 31, 2017       
Investment grade:       
Less than six months3
 $8,597
 $6,931
 $(1,666)
Six months or more and less than twelve months
 
 
 
Twelve months or greater
 
 
 
Total investment grade3
 8,597
 6,931
 (1,666)
Below investment grade:       
Less than six months1
 11,021
 8,275
 (2,746)
Six months or more and less than twelve months1
 3,523
 2,674
 (849)
Twelve months or greater4
 55,647
 37,591
 (18,056)
Total below investment grade6
 70,191
 48,540
 (21,651)
  (Dollars in thousands)9
 $78,788
 $55,471
 $(23,317)
December 31, 2016              
Investment grade:              
Less than six months
 $
 $
 $

 $
 $
 $
Six months or more and less than twelve months
 
 
 

 
 
 
Twelve months or greater
 
 
 

 
 
 
Total investment grade
 
 
 

 
 
 
Below investment grade:              
Less than six months1
 19,930
 15,961
 (3,969)1
 19,930
 15,961
 (3,969)
Six months or more and less than twelve months
 
 
 

 
 
 
Twelve months or greater10
 85,831
 58,436
 (27,395)10
 85,831
 58,436
 (27,395)
Total below investment grade11
 105,761
 74,397
 (31,364)11
 105,761
 74,397
 (31,364)
11
 $105,761
 $74,397
 $(31,364)11
 $105,761
 $74,397
 $(31,364)
December 31, 2015       
Investment grade:       
Less than six months37
 $460,894
 $339,047
 $(121,847)
Six months or more and less than twelve months13
 122,794
 82,149
 (40,645)
Twelve months or greater1
 2,856
 1,999
 (857)
Total investment grade51
 586,544
 423,195
 (163,349)
Below investment grade:       
Less than six months13
 73,412
 44,976
 (28,436)
Six months or more and less than twelve months13
 145,886
 88,308
 (57,578)
Twelve months or greater3
 30,930
 14,213
 (16,717)
Total below investment grade29
 250,228
 147,497
 (102,731)
80
 $836,772
 $570,692
 $(266,080)

The amortized cost and fair value of fixed maturity securities, by contractual maturity, that were in an unrealized loss position are shown below. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. All of our mortgage and other asset backed securities provide for periodic payments throughout their lives, and are shown below as a separate line.
 Available for sale Held for investment
 
Amortized
Cost
 Fair Value 
Amortized
Cost
 Fair Value
 (Dollars in thousands)
December 31, 2016       
Due in one year or less$
 $
 $
 $
Due after one year through five years177,550
 172,375
 
 
Due after five years through ten years4,943,504
 4,806,216
 
 
Due after ten years through twenty years2,736,298
 2,621,945
 
 
Due after twenty years3,019,491
 2,832,860
 76,825
 68,766
 10,876,843
 10,433,396
 76,825
 68,766
Residential mortgage backed securities87,169
 83,615
 
 
Commercial mortgage backed securities3,266,304
 3,149,290
 
 
Other asset backed securities918,403
 897,700
 
 
 $15,148,719
 $14,564,001
 $76,825
 $68,766
December 31, 2015       
Due in one year or less$
 $
 $
 $
Due after one year through five years257,994
 247,957
 
 
Due after five years through ten years6,111,139
 5,802,168
 
 
Due after ten years through twenty years2,816,752
 2,693,742
 
 
Due after twenty years2,788,651
 2,513,974
 76,622
 65,377
 11,974,536
 11,257,841
 76,622
 65,377
Residential mortgage backed securities172,697
 169,208
 
 
Commercial mortgage backed securities2,796,286
 2,691,005
 
 
Other asset backed securities523,592
 503,712
 
 
 $15,467,111
 $14,621,766
 $76,622
 $65,377
Energy and Metals & Mining
The tables below summarize our publicly issued corporate fixed maturity securities in the energy and metals & mining sectors. Our privately placed available for sale fixed maturity securities at December 31, 2016 total $169.6 million fair value ($172.2 million amortized cost) in Energy and $41.9 million fair value ($43.1 million amortized cost) in Metals & Mining and are not included in the following tables.
  December 31, 2016
Sector and Subsector 
Amortized
Cost
 Fair Value Unrealized Gain (Loss) Average Credit Rating
  (Dollars in thousands)  
Energy        
Independent $510,403
 $509,599
 $(804) Baa
Integrated 507,277
 520,721
 13,444
 A
Oil field services 403,265
 386,865
 (16,400) Baa
Refining 119,537
 123,131
 3,594
 Baa
Midstream 775,709
 792,578
 16,869
 Baa
Government owned no guarantee 308,684
 318,805
 10,121
 A
Metals & Mining 559,162
 574,473
 15,311
 Baa
Total Energy and Metals & Mining $3,184,037
 $3,226,172
 $42,135
 Baa

  Amortized Cost at December 31, 2016
  Energy    
NRSRO Rating Independent Integrated Oil field services Refining Midstream Government Owned No Guarantee Metals & Mining Total
  (Dollars in thousands)
Aaa $
 $
 $
 $
 $
 $
 $
 $
Aa 
 228,203
 
 
 
 19,918
 
 248,121
A 94,496
 94,732
 90,629
 12,091
 90,820
 238,946
 76,596
 698,310
Baa 369,692
 149,138
 185,217
 107,446
 656,099
 25,266
 287,800
 1,780,658
Ba 46,215
 35,204
 58,311
 
 28,790
 
 129,914
 298,434
B 
 
 60,491
 
 
 24,554
 54,051
 139,096
Below B 
 
 8,617
 
 
 
 10,801
 19,418
  $510,403
 $507,277
 $403,265
 $119,537
 $775,709
 $308,684
 $559,162
 $3,184,037
  Fair Value at December 31, 2016
  Energy    
NRSRO Rating Independent Integrated Oil field services Refining Midstream Government Owned No Guarantee Metals & Mining Total
  (Dollars in thousands)
Aaa $
 $
 $
 $
 $
 $
 $
 $
Aa 
 236,662
 
 
 
 21,002
 
 257,664
A 96,301
 96,198
 95,508
 12,612
 96,116
 252,015
 79,824
 728,574
Baa 369,032
 153,685
 181,876
 110,519
 668,128
 25,401
 295,751
 1,804,392
Ba 44,266
 34,176
 52,670
 
 28,334
 
 128,825
 288,271
B 
 
 49,745
 
 
 20,387
 50,382
 120,514
Below B 
 
 7,066
 
 
 
 19,691
 26,757
  $509,599
 $520,721
 $386,865
 $123,131
 $792,578
 $318,805
 $574,473
 $3,226,172
 Available for sale Held for investment
 
Amortized
Cost
 Fair Value 
Amortized
Cost
 Fair Value
 (Dollars in thousands)
December 31, 2017       
Due in one year or less$
 $
 $
 $
Due after one year through five years463,667
 454,062
 
 
Due after five years through ten years1,996,166
 1,945,474
 
 
Due after ten years through twenty years1,937,009
 1,881,162
 
 
Due after twenty years1,141,954
 1,074,913
 77,041
 76,460
 5,538,796
 5,355,611
 77,041
 76,460
Residential mortgage backed securities75,159
 72,688
 
 
Commercial mortgage backed securities2,473,034
 2,403,194
 
 
Other asset backed securities996,531
 983,126
 
 
 $9,083,520
 $8,814,619
 $77,041
 $76,460
December 31, 2016       
Due in one year or less$
 $
 $
 $
Due after one year through five years177,550
 172,375
 
 
Due after five years through ten years4,943,504
 4,806,216
 
 
Due after ten years through twenty years2,736,298
 2,621,945
 
 
Due after twenty years3,019,491
 2,832,860
 76,825
 68,766
 10,876,843
 10,433,396
 76,825
 68,766
Residential mortgage backed securities87,169
 83,615
 
 
Commercial mortgage backed securities3,266,304
 3,149,290
 
 
Other asset backed securities918,403
 897,700
 
 
 $15,148,719
 $14,564,001
 $76,825
 $68,766
International Exposure
We hold fixed maturity securities with international exposure. As of December 31, 2016, 18%2017, 20% of the carrying value of our fixed maturity securities was comprised of corporate debt securities of issuers based outside of the United States and debt securities of foreign governments. Our investment professionals analyze each holding for credit risk by economic and other factors of each country and industry. The following table presents our international exposure in our fixed maturity portfolio by country or region:
December 31, 2016December 31, 2017
Amortized
Cost
 Fair Value 
Percent of
Total
Fair Value
Amortized
Cost
 
Carrying Amount/
Fair Value
 Percent
of Total
Carrying
Amount
(Dollars in thousands)  (Dollars in thousands)  
GIIPS (1)$245,327
 $262,272
 0.6%$265,641
 $291,464
 0.6%
Asia/Pacific434,249
 443,717
 1.1%433,851
 455,671
 1.0%
Non-GIIPS Europe2,978,930
 3,043,505
 7.4%3,146,233
 3,298,662
 7.3%
Latin America261,516
 254,276
 0.6%294,041
 310,952
 0.7%
Non-U.S. North America1,277,542
 1,293,018
 3.2%1,348,686
 1,428,786
 3.2%
Australia & New Zealand711,576
 712,207
 1.7%767,307
 780,403
 1.7%
Other1,288,879
 1,299,827
 3.2%2,526,985
 2,560,051
 5.6%
$7,198,019
 $7,308,822
 17.8%$8,782,744
 $9,125,989
 20.1%
(1)
Greece, Ireland, Italy, Portugal and Spain continue to cause credit risk as economic conditions in these countries continue to be volatile, especially within the financial and banking sectors.("GIIPS"). All of our exposure in GIIPS are corporate securities with issuers domiciled in these countries. None of our foreign government obligations were held in any of these countries.

All of the securities presented in the table above are denominated in U.S. dollars and all are investment grade (NAIC designation of either 1 or 2), except for the following:
December 31, 2016December 31, 2017
Amortized Cost 
Carrying Amount/
Fair Value
Amortized Cost 
Carrying Amount/
Fair Value
(Dollars in thousands)(Dollars in thousands)
GIIPS (1)$28,746
 $29,267
$19,512
 $22,072
Asia/Pacific11,499
 9,768
11,000
 9,663
Non-GIIPS Europe98,302
 93,411
157,501
 157,259
Latin America55,640
 44,449
61,594
 58,855
Non-U.S. North America120,524
 115,832
89,770
 93,825
$314,711
 $292,727
$339,377
 $341,674
Watch List
At each balance sheet date, we identify invested assets which have characteristics (i.e. significant unrealized losses compared to amortized cost and industry trends) creating uncertainty as to our future assessment of an other than temporary impairment. As part of this assessment we review not only a change in current price relative to its amortized cost but the issuer's current credit rating and the probability of full recovery of principal based upon the issuer's financial strength. Specifically for corporate issues we evaluate the financial stability and quality of asset coverage for the securities relative to the term to maturity for the issues we own. A security which has a 25% or greater change in market price relative to its amortized cost and a possibility of a loss of principal will be included on a list which is referred to as our watch list. We exclude from this list securities with unrealized losses which are related to market movements in interest rates and which have no factors indicating that such unrealized losses may be other than temporary as we do not intend to sell these securities and it is more likely than not we will not have to sell these securities before a recovery is realized. In addition, we exclude our residential and commercial mortgage backed securities as we monitor all of our residential and commercial mortgage backed securities on a quarterly basis for changes in default rates, loss severities and expected cash flows for the purpose of assessing potential other than temporary impairments and related credit losses to be recognized in operations. At December 31, 2016,2017, the amortized cost and fair value of securities on the watch list (all fixed maturity securities) are as follows:
General Description 
Number of
Securities
 
Amortized
Cost
 
Unrealized
Losses
 Fair Value 
Months in
Continuous
Unrealized
Loss Position
 
Months
Unrealized
Losses
Greater
Than 20%
 
Number of
Securities
 
Amortized
Cost
 
Unrealized
Losses
 Fair Value 
Months in
Continuous
Unrealized
Loss Position
 
Months
Unrealized
Losses
Greater
Than 20%
 (Dollars in thousands)  (Dollars in thousands) 
Below investment grade              
Corporate securities:              
Energy 6 $53,615
 $(10,278) $43,337
 18 - 44 0 - 24 4 $29,055
 $(4,966) $24,089
 7 - 56 0 - 36
Industrials 1 4,982
 (2,076) 2,906
 26 17 1 2,500
 (150) 2,350
 38 
Materials 4 29,703
 (1,724) 27,979
 18 - 47  1 3,990
 770
 4,760
  
Telecommunications 1 2,324
 (442) 1,882
 30  1 2,100
 480
 2,580
  
Utilities 1 4,423
 (797) 3,626
 16 5
Other asset backed securities:              
Financials 2 6,845
 (4,244) 2,601
 43 - 69 20 - 24 2 6,141
 (3,524) 2,617
 55 - 81 0 - 36
Utilities 1 1,830
 
 1,830
 4 4
 16 $103,722
 $(19,561) $84,161
  9 $43,786
 $(7,390) $36,396
 
We have determined that the unrealized losses of the securities on the watch list are temporary as we do not intend to sell these securities and it is more likely than not we will not have to sell these securities before recovery of their amortized cost. Our analysis of these securities and their credit performance at December 31, 20162017 is as follows:
Corporate securities:
Energy, Industrials and Materials: The decline in the value of these securities relates to ongoingcontinued operational issues relatedpressure due to thea decline in certain commodity prices specific to their businesses. The decline in these commodity prices creates financial challenges as the industriescompanies realign to accommodate the lower prices. These issuers will be stressed greater than the average company due to their price sensitivity and the specific position they hold in the chain of supply.supply chain. While values have declined, improving commodity prices have provided better financial performance for these companies. We recognized an other than temporary impairment on one security during the fourth quarter of 2017 and one security during the third quarter of 2016 due to our evaluation of the operating performance and the credit worthiness of the issuer.issuers. While the remaining issuers have seen their financial and profitability profile weakened, we have determined that the remaining securities were not other than temporarily impaired due to our evaluation of the operating performance and the credit worthiness of the issuer.

Telecommunications:  The decline in the value of this security is the result of regional economic recessionary pressure in Brazil and an increase in competition in the markets it operates. This issuer has seen weakened performance and heightened risk. We recognized an other than temporary impairment on this security during the first quarter of 2016 due to our evaluation of the operating performance and the credit worthiness of the issuer.
Utilities: The decline in the value of this security is due to the company's parent announcing a strategic decision to attempt to become a fully regulated utility by 2018. This issuer is part of the unregulated business of the parent and concerns have arisen about its ability to become regulated. This uncertainty has stressed market prices for this bond. Due to the company's parent announcing that it is committed to exiting the power generation business and could potentially enter the facility into bankruptcy, we recognized an other than temporary impairment on this security during the fourth quarter of 2016.
Other asset backed securities:
Financials:  The decline in value of one of the asset backed securities is due to poor performance in the underlying pool of student loans. The investment is backed by a guarantee from the for-profit education services provider. We have determined that this security was not other than temporarily impaired, because the guarantee is in good standing and all required payments have been made, including hyper-amortization payments triggered by the performance of the student loan portfolio. The decline in value of the the other asset backed security is related directly to the decline in oil prices and the financial stability of its operator. The issuer has direct exposure to the oil market as its primary business is deep water drilling. As oil prices have declined the operator of the deep water vessel has experienced financial pressure on its balance sheet. We recognized other than temporary impairments on this security during the second quarter of 2017, the second quarter of 2016 and the third quarter of 2015.
Utilities:  The decline in the value of this security is due to the company's parent announcing a strategic decision to attempt to become a fully regulated utility by 2018.  This issuer is part of the unregulated business of the parent and concerns have arisen about its ability to become regulated.  This uncertainty has stressed market prices for this bond.  Due to the company's parent announcing that it is committed to exiting the power generation business and could potentially enter the facility into bankruptcy, we recognized an other than temporary impairment on this security during the fourth quarter of 2016.
Other Than Temporary Impairments
We have a policy and process to identify securities in our investment portfolio for which we should recognize impairments. See Critical Accounting Policies—Evaluation of Other Than Temporary Impairments. During the years ended December 31, 2017, 2016 2015 and 2014,2015, we recognized other than temporary impairment on corporate securities, residential mortgage backed securities, commercial mortgage backed securities and other asset backed securities, all of which are available for sale fixed maturity securities. In addition, in all periods presented we recognized credit losses on residential mortgage backed securities, and on one other asset backed security in 2016, that resulted in a reclassification of OTTI loss from accumulated other comprehensive income to net income.
In 2017, we recognized a $2.5 million OTTI loss in operations due to our concern regarding a corporate security issued by a Latin America engineering and construction company as developments in 2017 led us to the conclusion that we will not be able to recover our amortized cost basis. We recognized an OTTI of $0.3 million on a residential mortgage backed security that had not been previously impaired and we recognized additional credit losses on previously impaired residential mortgage backed securities during 2017 as several factors led us to believe the full recovery of amortized cost is not expected on the residential mortgage backed securities. Also in 2017, we recognized an additional impairment of $0.3 million on an asset backed security as sales of similar assets during 2017 led us to conclude that the asset backing our security was worth less than our previous estimates.
In 2016, we recognized a $3.9 million OTTI loss in operations due to our concern regarding a corporate security issued by a Brazilian telecommunications company as developments in 2016 led us to the conclusion that we will not be able to fully recover our amortized cost basis due to liquidity concerns. A $3.0 million OTTI loss was recognized in operations due to our concern regarding a corporate security issued by a Brazilian metals and mining company as developments during 2016 led us to the conclusion that we will not be able to fully recover our amortized cost basis. We recognized a $9.2 million OTTI loss in operations on a corporate security and an other asset backed security as a result of the parent of both entities announcement that it is committed to exiting the power generation business and could potentially enter the facilities into bankruptcy. In 2016, we recognized an additional impairment of $3.5 million on an other asset backed security due to the asset supporting the cash flows being taken out of production which was first impaired during 2015. The OTTI that we recognized in 2016 on commercial mortgage backed securities were due to our intent to sell the securities, which were in an unrealized loss position at the reporting date of the period in which the decision to sell these securities was made.
In 2015, we recognized a $4.9 million OTTI loss in operations on an other asset backed security due to the asset supporting the cash flows being taken out of production. A total of $12.4 million was recognized as OTTI loss in operations on corporate securities issued by a company in iron ore production that had long standing contract issues that gave us concern as to their future cash flow and liquidity.
Several factors led us to believe that full recovery of amortized cost is not expected on the securities for which we recognized credit losses and reclassified OTTI from accumulated other comprehensive income to net income. A discussion of these factors, our policy and process to identify securities that could potentially have impairment that is other than temporary and a summary of OTTI is presented in Note 3 to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.

Mortgage Loans on Real Estate
Our commercial mortgage loan portfolio consists of mortgage loans collateralized by the related properties and diversified as to property type, location and loan size. Our mortgage lending policies establish limits on the amount that can be loaned to one borrower and other criteria to attempt to reduce the risk of default. Our commercial mortgage loans on real estate are reported at cost, net of loan loss allowances and deferred prepayment fees. At December 31, 20162017 and 2015,2016, the largest principal amount outstanding for any single mortgage loan was $20.9$21.2 million and $17.9$20.9 million, respectively, and the average loan size was $3.2$3.5 million and $2.9$3.2 million, respectively. In addition, the average loan to value ratio for the overall portfolio was 53.6% and 53.7%, at both December 31, 20162017 and 2015,2016, respectively, based upon the underwriting and appraisal at the time the loan was made. This loan to value is indicative of our conservative underwriting policies and practices for making commercial mortgage loans and may not be indicative of collateral values at the current reporting date. Our current practice is to only obtain market value appraisals of the underlying collateral at the inception of the loan unless we identify indicators of impairment in our ongoing analysis of the portfolio, in which case, we either calculate a value of the collateral using a capitalization method or obtain a third party appraisal of the underlying collateral. The commercial mortgage loan portfolio is summarized by geographic region and property type in Note 4 of our audited consolidated financial statements of this Form 10-K, which is incorporated by reference in this Item 7.

In the normal course of business, we commit to fund commercial mortgage loans up to 90 days in advance. At December 31, 2016,2017, we had commitments to fund commercial mortgage loans totaling $75.5$62.0 million, with fixed interest rates ranging from 3.90%4.00% to 4.88%6.09%. During 20162017 and 2015,2016, due to historically low interest rates, the commercial mortgage loan industry has been very competitive. This competition has resulted in a number of borrowers refinancing with other lenders. For the year ended December 31, 2016,2017, we received $301.7$230.4 million in cash for loans being paid in full compared to $371.0$301.7 million for the year ended December 31, 2015.2016. Some of the loans being paid off have either reached their maturity or are nearing maturity; however, some borrowers are paying the prepayment fee and refinancing at a lower rate.
See Note 4 to our audited consolidated financial statements for a presentation of our specific and general loan loss allowances, impaired loans, foreclosure activity and troubled debt restructure analysis.
We have a process by which we evaluate the credit quality of each of our commercial mortgage loans. This process utilizes each loan's debt service coverage ratio as a primary metric. A summary of our portfolio by debt service coverage ratio (based on most recent information collected) follows:
December 31, 2016 December 31, 2015December 31, 2017 December 31, 2016
Principal Outstanding Percent of Total Principal Outstanding Principal Outstanding Percent of Total Principal OutstandingPrincipal Outstanding Percent of Total Principal Outstanding Principal Outstanding Percent of Total Principal Outstanding
(Dollars in thousands)   (Dollars in thousands)  (Dollars in thousands)   (Dollars in thousands)  
Debt Service Coverage Ratio:              
Greater than or equal to 1.5$1,781,928
 71.5% $1,772,226
 72.3%$1,826,596
 68.3% $1,781,928
 71.5%
Greater than or equal to 1.2 and less than 1.5517,697
 20.8% 414,482
 16.9%638,299
 23.9% 517,697
 20.8%
Greater than or equal to 1.0 and less than 1.2122,115
 4.9% 141,799
 5.8%148,881
 5.6% 122,115
 4.9%
Less than 1.068,879
 2.8% 121,402
 5.0%60,539
 2.2% 68,879
 2.8%
$2,490,619
 100.0% $2,449,909
 100.0%$2,674,315
 100.0% $2,490,619
 100.0%
AllApproximately 94% of our mortgage loans (based on principal outstanding) that have a debt service coverage ratio of less than 1.0 are performing under the original contractual loan terms at December 31, 2016.2017.
Mortgage loans summarized in the following table represent all loans that we are either not currently collecting or those we feel it is probable we will not collect all amounts due according to the contractual terms of the loan agreements (all loans that we have worked with the borrower to alleviate short-term cash flow issues, loans delinquent for 60 days or more at the reporting date, loans we have determined to be collateral dependent and loans that we have recorded specific impairments on that we feel may continue to have performance issues).
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Impaired mortgage loans with an allowance$4,640
 $21,277
$5,445
 $4,640
Impaired mortgage loans with no related allowance1,591
 8,859
1,436
 1,591
Allowance for probable loan losses(1,327) (7,842)(1,418) (1,327)
Net carrying value of impaired mortgage loans$4,904
 $22,294
$5,463
 $4,904
At December 31, 2016,2017, we had no commercial mortgage loans that were delinquent (60 days or more past due at the reporting date) in their principal and interest payments.

Derivative Instruments
Our derivative instruments primarily consist of call options purchased to provide the income needed to fund the annual index credits on our fixed index annuity products. The fair value of the call options is based upon the amount of cash that would be required to settle the call options obtained from the counterparties adjusted for the nonperformance risk of the counterparty. The nonperformance risk for each counterparty is based upon its credit default swap rate. We have no performance obligations related to the call options.
None of our derivatives qualify for hedge accounting, thus, any change in the fair value of the derivatives that are not classified as equity is recognized immediately in the consolidated statements of operations. A presentation of our derivative instruments along with a discussion of the business strategy involved with our derivatives is included in Note 5 to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.

Liabilities
Our liability for policy benefit reserves increased to $56.1 billion at December 31, 2017 compared to $51.6 billion at December 31, 2016, compared to $45.5 billion at December 31, 2015, primarily due to additional annuity sales as discussed above.above and interest and index credits credited to policyholders during 2017. Substantially all of our annuity products have a surrender charge feature designed to reduce the risk of early withdrawal or surrender of the policies and to compensate us for our costs if policies are withdrawn early. Our lifetime income benefit rider also reduces the risk of early withdrawal or surrender of the policies as it provides an additional liquidity option to policyholders as the policyholder can elect to receive guaranteed payments for life from their contract without requiring them to annuitize their contract value and the rider is not transferable to other contracts. Notwithstanding these policy features, the withdrawal rates of policyholder funds may be affected by changes in interest rates and other factors.
See Note 9 to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7 for discussion of our notes and loan payable and borrowings under repurchase agreements.
See Note 10 to our audited consolidated financial statements for additional information concerning our subordinated debentures payable to, and the preferred securities issued by, our subsidiary trusts.
Liquidity and Capital Resources
Liquidity for Insurance Operations
Our insurance subsidiaries' primary sources of cash flow are annuity deposits, investment income, and proceeds from the sale, maturity and calls of investments. The primary uses of funds are investment purchases, payments to policyholders in connection with surrenders and withdrawals, policy acquisition costs and other operating expenses.
Liquidity requirements are met primarily by funds provided from operations. Our life subsidiaries generally receive adequate cash flow from annuity deposits and investment income to meet their obligations. Annuity and life insurance liabilities are generally long-term in nature. However, a primary liquidity concern is the risk of an extraordinary level of early policyholder withdrawals. We include provisions within our annuity policies, such as surrender charges and bonus vesting, thatwhich help limit and discourage early withdrawals. Our lifetime income benefit rider also limits the risk of early withdrawals as it provides an additional liquidity option to policyholders as the policyholder can elect to receive guaranteed payments for life from their contract without requiring them to annuitize their contract value and the rider is not transferable to other contracts. At December 31, 2016,2017, approximately 94% of our annuity liabilities were subject to penalty upon surrender, with a weighted average remaining surrender charge period of 8.68.1 years and a weighted average surrender charge percentage of 13.8%13.0%.
Our insurance subsidiaries continue to have adequate cash flows from annuity deposits and investment income to meet their policyholder and other obligations. Net cash flows from annuity deposits and funds returned to policyholders as surrenders, withdrawals and death claims were $1.3 billion for the year ended December 31, 2017 compared to $3.2 billion for the year ended December 31, 2016 compared to $4.7 billion for the year ended December 31, 2015 with the decrease attributable to a $1.2$1.6 billion decrease in net annuity deposits after coinsurance and a $236.3$311.6 million (after coinsurance) increase in funds returned to policyholders. We continue to invest the net proceeds from policyholder transactions and investment activities in high quality fixed maturity securities and fixed rate commercial mortgage loans.
Liquidity of Parent Company
We, as the parent company, are a legal entity separate and distinct from our subsidiaries, and have no business operations. We need liquidity primarily to service our debt (senior notes term loan and subordinated debentures issued to subsidiary trusts), pay operating expenses and pay dividends to stockholders. Our assets consist primarily of the capital stock and surplus notes of our subsidiaries. Accordingly, our future cash flows depend upon the availability of dividends, surplus note interest payments and other statutorily permissible payments from our subsidiaries, such as payments under our investment advisory agreements and tax allocation agreement with our subsidiaries. These sourcesPayments under our investment advisory agreements and tax allocation agreement with our subsidiaries provide adequate cash flow for us to meet our current and reasonably foreseeable future obligations and we expect they will be adequate to fund our parent company cash flow requirements in 2017.2018.
The ability of our life insurance subsidiaries to pay dividends or distributions, including surplus note payments, will be limited by applicable laws and regulations of the states in which our life insurance subsidiaries are domiciled, which subject our life insurance subsidiaries to significant regulatory restrictions. These laws and regulations require, among other things, our insurance subsidiaries to maintain minimum solvency requirements and limit the amount of dividends these subsidiaries can pay.

Currently, American Equity Life may pay dividends or make other distributions without the prior approval of the Iowa Insurance Commissioner, unless such payments, together with all other such payments within the preceding twelve months, exceed the greater of (1) American Equity Life's net gain from operations for the preceding calendar year, or (2) 10% of American Equity Life's statutory capital and surplus at the preceding December 31. For 2017,2018, up to $272.7$377.1 million can be distributed as dividends by American Equity Life without prior approval of the Iowa Insurance Commissioner. In addition, dividends and surplus note payments may be made only out of statutory earned surplus, and all surplus note payments are subject to prior approval by regulatory authorities in the life subsidiary's state of domicile. American Equity Life had $1.4$1.7 billion of statutory earned surplus at December 31, 2016.2017.

The maximum distribution permitted by law or contract is not necessarily indicative of an insurer's actual ability to pay such distributions, which may be constrained by business and regulatory considerations, such as the impact of such distributions on surplus, which could affect the insurer's ratings or competitive position, the amount of premiums that can be written and the ability to pay future dividends or make other distributions. Further, state insurance laws and regulations require that the statutory surplus of our life subsidiaries following any dividend or distribution must be reasonable in relation to their outstanding liabilities and adequate for their financial needs. Along with solvency regulations, the primary driver in determining the amount of capital used for dividends is the level of capital needed to maintain desired financial strength ratings from A.M. Best and Standard and Poor's. Both regulators and rating agencies could become more conservative in their methodology and criteria, including increasing capital requirements for our insurance subsidiaries which, in turn, could negatively affect the cash available to us from insurance subsidiaries. As of December 31, 2016,2017, we estimate American Equity Life has sufficient statutory capital and surplus, combined with capital available to the holding company, to meet this rating objective. However, this capital may not be sufficient if significant future losses are incurred or a rating agency modifies its rating criteria and access to additional capital could be limited.
The transfer of funds by American Equity Life is also restricted by a covenant in our line of credit agreement which requires American Equity Life to maintain a minimum risk-based capital ratio of 275% and a minimum level of statutory surplus equal to the sum of 1) 80% of statutory surplus at June 30, 2016, 2) 50% of the statutory net income for each fiscal quarter ending after June 30, 2016, and 3) 50% of all capital contributed to American Equity Life after June 30, 2016. American Equity Life's risk-based capital ratio was 342%378% at December 31, 2016.2017. Under this agreement, we are also required to maintain a maximum ratio of adjusted debt to total adjusted capital of 0.35.
In August 2015, we completed an underwritten public offering of 9,890,000 shares of our common stock at a public offering price of $25.25 per share, of which 5,590,000 shares were subject to forward sale agreements. During the third quarter of 2015, we contributed $120 million to the capital and surplus of American Equity Life which included $104.5 million of initial net proceeds from the issuance of 4.3 million shares of common stock in our August 2015 public stock offering. We settled the forward sale agreements on August 1, 2016, and issued 5,590,000 shares of our common stock and received $134.7 million in net proceeds which was contributed to the capital and surplus of American Equity Life.
In 2015 and 2014, we retired $344 million aggregate principal amount of three convertible note issues. The total consideration paid to retire the convertible notes included $486 million of cash and 9.45 million shares of our common stock. We have now extinguished all of our convertible notes.
Cash and cash equivalents of the parent holding company at December 31, 2016,2017, were $36.4$21.0 million. In addition, as discussed in Note 9 to our audited consolidated financial statements we have a $150 million revolving line of credit agreement.agreement, with no borrowings outstanding at December 31, 2017. This revolving line of credit terminates on September 30, 2021, and borrowings are available for general corporate purposes of the parent company and its subsidiaries. We also have the ability to issue equity, debt or other types of securities through one or more methods of distribution under a currently effective shelf registration statement on Form S-3. The terms of any offering would be established at the time of the offering, subject to market conditions.
On August 5, 2015, Standard & Poor's raised its counterparty credit ratingAs discussed above under Executive Summary, we issued the 2027 Notes on American Equity Investment Life Holding CompanyJune 16, 2017. We used the net proceeds from the issuance of the 2027 Notes to BBB- from BB+prepay our $100 million term loan that was scheduled to mature in 2019 on June 16, 2017, and its financial strength ratingto redeem the 2021 Notes on American Equity LifeJuly 17, 2017. We paid $413.3 million to A- from BBB+. On August 7, 2015, Fitch Ratings upgradedredeem the issuer default rating2021 Notes which included an early redemption premium equal to 3.313% of American Equity Investment Life Holding Company to BBB- from BB+.the $400 million principal amount of the 2021 Notes.
Statutory accounting practices prescribed or permitted for our life subsidiaries differ in many respects from those governing the preparation of financial statements under GAAP. Accordingly, statutory operating results and statutory capital and surplus may differ substantially from amounts reported in the GAAP basis financial statements for comparable items. Information as to statutory capital and surplus and statutory net income for our life subsidiaries as of December 31, 20162017 and 20152016 and for the years ended December 31, 2017, 2016 2015 and 20142015 is included in Note 12 to our audited consolidated financial statements.

In the normal course of business, we enter into financing transactions, lease agreements, or other commitments. These commitments may obligate us to certain cash flows during future periods. The following table summarizes such obligations as of December 31, 2016.2017.
Payments Due by PeriodPayments Due by Period
Total 
Less Than
1 year
 1–3 Years 4–5 Years 
After
5 Years
Total 
Less Than
1 year
 1–3 Years 4–5 Years 
After
5 Years
(Dollars in thousands)(Dollars in thousands)
Annuity and single premium universal life products (1)$51,628,372
 $2,872,877
 $11,385,699
 $7,625,528
 $29,744,268
$59,219,810
 $3,683,218
 $12,071,486
 $8,221,285
 $35,243,821
Notes and loan payable, including interest payments (2)628,428
 29,537
 158,419
 440,472
 
739,197
 25,463
 50,925
 50,309
 612,500
Subordinated debentures, including interest payments (3)550,997
 12,575
 25,152
 25,152
 488,118
558,297
 13,721
 27,443
 27,443
 489,690
Operating leases16,871
 1,890
 3,813
 3,704
 7,464
15,374
 1,998
 4,014
 3,517
 5,845
Mortgage loan funding and other investments158,248
 118,822
 25,626
 13,800
 
121,038
 73,177
 47,861
 
 
Total$52,982,916
 $3,035,701
 $11,598,709
 $8,108,656
 $30,239,850
$60,653,716
 $3,797,577
 $12,201,729
 $8,302,554
 $36,351,856
(1)Amounts shown in this table are projected payments through the year 20362037 which we are contractually obligated to pay to our annuity policyholders. The payments are derived from actuarial models which assume a level interest rate scenario and incorporate assumptions regarding mortality and persistency, when applicable. These assumptions are based on our historical experience.
(2)Period that principal amounts are due is determined by the earliest of the call/put date or the maturity date of each note payable.
(3)Amount shown is net of equity investments in the capital trusts due to the contractual right of offset upon repayment of the notes.
Inflation
Inflation does not have a significant effect on our consolidated balance sheet. We have minimal investments in property, equipment or inventories. To the extent that interest rates may change to reflect inflation or inflation expectations, there would be an effect on our balance sheet and operations. It is not possible to calculate the effect such changes in interest rates, if any, have had on our operating results.

Critical Accounting Policies
The increasing complexity of the business environment and applicable authoritative accounting guidance require us to closely monitor our accounting policies. We have identified six critical accounting policies that are complex and require significant judgment. The following summary of our critical accounting policies is intended to enhance your ability to assess our financial condition and results of operations and the potential volatility due to changes in estimates.
Valuation of Investments
Our fixed maturity securities (bonds and redeemable preferred stocks maturing more than one year after issuance) and equity securities classified as available for sale are reported at fair value. Unrealized gains and losses, if any, on these securities are included directly in stockholders' equity as a component of accumulated other comprehensive income (loss), net of income taxes and certain adjustments for assumed changes in amortization of deferred policy acquisition costs and deferred sales inducements. Unrealized gains and losses represent the difference between the amortized cost or cost basis and the fair value of these investments. We use significant judgment within the process used to determine fair value of these investments.
GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants at the measurement date. We categorize our investments into three levels of fair value hierarchy based on the priority of inputs used in determining fair value. The hierarchy defines the highest priority inputs (Level 1) as quoted prices in active markets for identical assets or liabilities. The lowest priority inputs (Level 3) are our own assumptions about what a market participant would use in determining fair value such as estimated future cash flows. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, a financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the financial instrument.

We categorize investments recorded at fair value in the consolidated balance sheets as follows:
Level 1 —Quoted prices are available in active markets for identical financial instruments as of the reporting date. We do not adjust the quoted price for these financial instruments, even in situations where we hold a large position and a sale could reasonably impact the quoted price.
Level 2 —Quoted prices in active markets for similar financial instruments, quoted prices for identical or similar financial instruments in markets that are not active; and models and other valuation methodologies using inputs other than quoted prices that are observable.
Level 3 —Models and other valuation methodologies using significant inputs that are unobservable for financial instruments and include situations where there is little, if any, market activity for the financial instrument. The inputs into the determination of fair value require significant management judgment or estimation. Financial instruments that are included in Level 3 are securities for which no market activity or data exists and for which we used discounted expected future cash flows with our own assumptions about what a market participant would use in determining fair value.
The following table presents the fair value of fixed maturity and equity securities, available for sale, by pricing source and hierarchy level as of December 31, 20162017 and 2015,2016, respectively:
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 Total
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 Total
(Dollars in thousands)(Dollars in thousands)
December 31, 2016       
December 31, 2017       
Priced via third party pricing services$5,387
 $41,016,054
 $
 $41,021,441
$290,645
 $45,150,229
 $
 $45,440,874
Priced via independent broker quotations
 36,436
 
 36,436

 34,750
 
 34,750
Priced via matrices
 
 
 
Priced via other methods
 10,617
 
 10,617

 189,794
 
 189,794
$5,387
 $41,063,107
 $
 $41,068,494
$290,645
 $45,374,773
 $
 $45,665,418
% of Total% 100.0% % 100.0%0.6% 99.4% % 100.0%
              
December 31, 2015       
December 31, 2016       
Priced via third party pricing services$438,719
 $35,785,649
 $
 $36,224,368
$5,387
 $41,016,054
 $
 $41,021,441
Priced via independent broker quotations
 164,314
 
 164,314

 36,436
 
 36,436
Priced via matrices
 
 
 
Priced via other methods
 40,985
 
 40,985

 10,617
 
 10,617
$438,719
 $35,990,948
 $
 $36,429,667
$5,387
 $41,063,107
 $
 $41,068,494
% of Total1.2% 98.8% % 100.0%% 100.0% % 100.0%
Management's assessment of all available data when determining fair value of our investments is necessary to appropriately apply fair value accounting.

We utilize independent pricing services in estimating the fair values of investment securities. The independent pricing services incorporate a variety of observable market data in their valuation techniques, including:
reported trading prices,
benchmark yields,
broker-dealer quotes,
benchmark securities,
bids and offers,
credit ratings,
relative credit information, and
other reference data.
The independent pricing services also take into account perceived market movements and sector news, as well as a security's terms and conditions, including any features specific to that issue that may influence risk and marketability. Depending on the security, the priority of the use of observable market inputs may change as some observable market inputs may not be relevant or additional inputs may be necessary.

The independent pricing services provide quoted market prices when available. Quoted prices are not always available due to market inactivity. When quoted market prices are not available, the third parties use yield data and other factors relating to instruments or securities with similar characteristics to determine fair value for securities that are not actively traded. We generally obtain one value from our primary external pricing service. In situations where a price is not available from this service, we may obtain further quotes or prices from additional parties as needed. In addition, for our callable United States Government sponsored agencies we obtain multiple broker quotes and take the average of the broker prices received. Market indices of similar rated asset class spreads are considered for valuations and broker indications of similar securities are compared. Inputs used by the broker include market information, such as yield data and other factors relating to instruments or securities with similar characteristics. Valuations and quotes obtained from third party commercial pricing services are non-binding and do not represent quotes on which one may execute the disposition of the assets.
We validate external valuations at least quarterly through a combination of procedures that include the evaluation of methodologies used by the pricing services, analytical reviews and performance analysis of the prices against trends, and maintenance of a securities watch list. Additionally, as needed we utilize discounted cash flow models or perform independent valuations on a case-by-case basis using inputs and assumptions similar to those used by the pricing services. Although we do identify differences from time to time as a result of these validation procedures, we did not make any significant adjustments as of December 31, 20162017 and 2015.2016.
Evaluation of Other Than Temporary Impairments and Allowance for Loan Loss
The evaluation of investments for other than temporary impairments involves significant judgment and estimates by management. We review and analyze all investments on an ongoing basis for changes in market interest rates and credit deterioration. This review process includes analyzing our ability to recover the amortized cost or cost basis of each investment that has a fair value that is materially lower than its amortized cost and requires a high degree of management judgment and involves uncertainty. The evaluation of securities for other than temporary impairments is a quantitative and qualitative process, which is subject to risks and uncertainties.
We have a policy and process to identify securities that could potentially have an impairment that is other than temporary. This process involves monitoring market events and other items that could impact issuers. The evaluation includes but is not limited to such factors as:
the length of time and the extent to which the fair value has been less than amortized cost or cost;
whether the issuer is current on all payments and all contractual payments have been made as agreed;
the remaining payment terms and the financial condition and near-term prospects of the issuer;
the lack of ability to refinance due to liquidity problems in the credit market;
the fair value of any underlying collateral;
the existence of any credit protection available;
our intent to sell and whether it is more likely than not we would be required to sell prior to recovery for debt securities;
our assessment in the case of equity securities including perpetual preferred stocks with credit deterioration that the security cannot recover to cost in a reasonable period of time;
our intent and ability to retain equity securities for a period of time sufficient to allow for recovery;
consideration of rating agency actions; and
changes in estimated cash flows of mortgage and asset backed securities.
We determine whether other than temporary impairment losses should be recognized for debt and equity securities by assessing all facts and circumstances surrounding each security. Where the decline in fair value of debt securities is attributable to changes in market interest rates or to factors such as market volatility, liquidity and spread widening, and we anticipate recovery of all contractual or expected cash flows, we do not consider these investments to be other than temporarily impaired because we do not intend to sell these investments and it is not more likely than not we will be required to sell these investments before a recovery of amortized cost, which may be maturity. For equity securities, we recognize an impairment charge in the period in which we do not have the intent and ability to hold the securities until recovery of cost or we determine that the security will not recover to book value within a reasonable period of time. We determine what constitutes a reasonable period of time on a security-by-security basis by considering all the evidence available to us, including the magnitude of any unrealized loss and its duration.

Other than temporary impairment losses on equity securities are recognized in operations. If we intend to sell a debt security or if it is more likely than not that we will be required to sell a debt security before recovery of its amortized cost basis, other than temporary impairment has occurred and the difference between amortized cost and fair value will be recognized as a loss in operations.
If we do not intend to sell and it is not more likely than not we will be required to sell the debt security but also do not expect to recover the entire amortized cost basis of the security, an impairment loss would be recognized in operations in the amount of the expected credit loss. We determine the amount of expected credit loss by calculating the present value of the cash flows expected to be collected discounted at each security's acquisition yield based on our consideration of whether the security was of high credit quality at the time of acquisition. The difference between the present value of expected future cash flows and the amortized cost basis of the security is the amount of credit loss recognized in operations. The remaining amount of the other than temporary impairment is recognized in other comprehensive income.

The determination of the credit loss component of a mortgage backed security is based on a number of factors. The primary consideration in this evaluation process is the issuer's ability to meet current and future interest and principal payments as contractually stated at time of purchase. Our review of these securities includes an analysis of the cash flow modeling under various default scenarios considering independent third party benchmarks, the seniority of the specific tranche within the structure of the security, the composition of the collateral and the actual default, loss severity and prepayment experience exhibited. With the input of third party assumptions for default projections, loss severity and prepayment expectations, we evaluate the cash flow projections to determine whether the security is performing in accordance with its contractual obligation.
We utilize the models from a leading structured product software specialist serving institutional investors. These models incorporate each security's seniority and cash flow structure. In circumstances where the analysis implies a potential for principal loss at some point in the future, we use our "best estimate" cash flow projection discounted at the security's effective yield at acquisition to determine the amount of our potential credit loss associated with this security. The discounted expected future cash flows equates to our expected recovery value. Any shortfall of the expected recovery when compared to the amortized cost of the security will be recorded as the credit loss component of an other than temporary impairment.
The cash flow modeling is performed on a security-by-security basis and incorporates actual cash flows on the residential mortgage backed securities through the current period, as well as the projection of remaining cash flows using a number of assumptions including default rates, prepayment rates and loss severity rates. The default curves we use are tailored to the Prime or Alt-A residential mortgage backed securities that we own, which assume lower default rates and loss severity for Prime securities versus Alt-A securities. These default curves are scaled higher or lower depending on factors such as current underlying mortgage loan performance, rating agency loss projections, loan to value ratios, geographic diversity, as well as other appropriate considerations.
The determination of the credit loss component of a corporate bond (including redeemable preferred stocks) is based on the underlying financial performance of the issuer and their ability to meet their contractual obligations. Considerations in our evaluation include, but are not limited to, credit rating changes, financial statement and ratio analysis, changes in management, significant changes in credit spreads, breaches of financial covenants and a review of the economic outlook for the industry and markets in which they trade. In circumstances where an issuer appears unlikely to meet its future obligation, or the security's price decline is deemed other than temporary, an estimate of credit loss is determined. Credit loss is calculated using default probabilities as derived from the credit default swaps markets in conjunction with recovery rates derived from independent third party analysis or a best estimate of credit loss. This credit loss rate is then incorporated into a present value calculation based on an expected principal loss in the future discounted at the yield at the date of purchase and compared to amortized cost to determine the amount of credit loss associated with the security.
In addition, for debt securities which we do not intend to sell and it is not more likely than not we will be required to sell, but our intent changes due to changes or events that could not have been reasonably anticipated, an other than temporary impairment charge is recognized in net income and amortized cost is written down to fair value. Once an impairment charge has been recorded, we then continue to review the other than temporarily impaired securities for appropriate valuation on an ongoing basis. Unrealized losses may be recognized in future periods through a charge to earnings should we later conclude that the decline in fair value below amortized cost is other than temporary pursuant to our accounting policy described above. The use of different methodologies and assumptions to determine the fair value of investments and the timing and amount of impairments may have a material effect on the amounts presented in our consolidated financial statements.
We evaluate our mortgage loan portfolio for the establishment of a loan loss allowance by specific identification of impaired loans and the measurement of an estimated loss for each individual loan identified. A mortgage loan is impaired when it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement. If we determine that the value of any specific mortgage loan is impaired, the carrying amount of the mortgage loan will be reduced to its fair value, based upon the present value of expected future cash flows from the loan discounted at the loan's effective interest rate, or the fair value of the underlying collateral less estimated costs to sell.
In addition, we analyze the mortgage loan portfolio for the need of a general loan allowance for probable losses on all other loans on a quantitative and qualitative basis. The amount of the general loan allowance is based upon management's evaluation of the collectability of the loan portfolio, historical loss experience, delinquencies, credit concentrations, underwriting standards and national and local economic conditions.
We rate each of the mortgage loans in our portfolio based on factors such as historical operating performance, loan to value ratio and economic outlook, among others. We calculate a loss factor to apply to each rating based on historical losses we have recognized in our mortgage loan portfolio. We apply the loss factors to the total principal outstanding within each rating category to determine an appropriate estimate of the general loan loss allowance. We also assess the portfolio quantitatively and apply a loss rate to all loans without a specific allowance based on management's assessment of economic conditions, and we apply an additional amount of loss allowance to a group of loans that we have identified as having higher risk of loss.

Policy Liabilities for Fixed Index Annuities
We offer a variety of fixed index annuities with crediting strategies linked to the S&P 500 Index and other equity and bond market indices. We purchase call options on the applicable indices as an investment to provide the income needed to fund the annual index credits on the index products. See Financial Condition—Derivative Instruments. Certain derivative instruments embedded in the fixed index annuity contracts are recognized in the consolidated balance sheet at their fair values and changes in fair value are recognized immediately in our consolidated statements of operations in accordance with accounting standards for derivative instruments and hedging activities.
Accounting for derivatives prescribes that the contractual obligations for future annual index credits are treated as a "series of embedded derivatives" over the expected life of the applicable contracts. Policy liabilities for fixed index annuities are equal to the sum of the "host" (or guaranteed) component and the embedded derivative component for each fixed index annuity policy. The host value is established at inception of the contract and accreted over the policy's life at a constant rate of interest. We estimate the fair value of the embedded derivative component at each valuation date by (i) projecting policy contract values and minimum guaranteed contract values over the expected lives of the contracts and (ii) discounting the excess of the projected contract value amounts at the applicable risk free interest rates adjusted for our nonperformance risk related to those liabilities. The projections of policy contract values are based on our best estimate assumptions for future policy growth and future policy decrements. Our best estimate assumptions for future policy growth include assumptions for the expected index credits on the next policy anniversary date which are derived from the fair values of the underlying call options purchased to fund such index credits and the expected costs of annual call options we will purchase in the future to fund index credits beyond the next policy anniversary. The projections of minimum guaranteed contract values include the same best estimate assumptions for policy decrements as were used to project policy contract values. The amounts reported in the consolidated statements of operations as "Interest sensitive and index product benefits" represent amounts credited to policy liabilities pursuant to accounting by insurance companies for certain long-duration contracts which include index credits through the most recent policy anniversary. The amounts reported in the consolidated statements of operations as "Changes in fair value of embedded derivatives" equal the change in the difference between policy benefit reserves for fixed index annuities computed under the derivative accounting standard and the long-duration contracts accounting standard at each balance sheet date.
In general, the change in the fair value of the embedded derivatives will not correspond to the change in fair value of the purchased call options because the purchased call options are one year options while the options valued in the embedded derivatives represent the rights of the contract holder to receive index credits over the entire period the fixed index annuities are expected to be in force, which typically exceeds 10 years.
The most sensitive assumption in determining policy liabilities for fixed index annuities is the rates used to discount the excess projected contract values. As indicated above, the discount rate reflects our nonperformance risk. If the discount rates used to discount the excess projected contract values at December 31, 20162017 were to increase by 100 basis points, our reserves for fixed index annuities would decrease by $451.4$579.5 million recorded through operations as a decrease in the change in fair value of embedded derivatives and there would be a corresponding decrease of $276.4$339.4 million to our combined balance for deferred policy acquisition costs and deferred sales inducements recorded through operations as an increase in amortization of deferred policy acquisition costs and deferred sales inducements. A decrease by 100 basis points in the discount rate used to discount the excess projected contract values would increase our reserves for fixed index annuities by $504.5$645.8 million recorded through operations as an increase in the change in fair value of embedded derivatives and increase our combined balance for deferred policy acquisition costs and deferred sales inducements by $299.5$374.8 million recorded through operations as a decrease in amortization of deferred policy acquisition costs and deferred sales inducements.
Liability for Lifetime Income Benefit Riders
Beginning in July 2007, substantially all of our fixed index annuity policies and many of our annual reset fixed rate deferred annuities were issued with a lifetime income benefit rider.
The liability for lifetime income benefit riders is based on estimates of the value of benefit payments expected to be paid in excess of projected policy values recognizing the excess over the expected lives of the underlying policies based on actual and expected assessments including spreads and product charges and fees. The inputs used in the calculation of the liability for lifetime income benefit riders include actual policy values, actual income account values, actual payout factors, actual roll-up rates and our best estimate assumptions for future policy growth, future policy decrements, the ages at which policyholders are expected to elect to begin to receive lifetime income benefit payments, the percentage of policyholders who elect to receive lifetime income benefit payments and the type of income benefit payments selected upon election. The assumptions are reviewed quarterly and revisions to the assumptions are made based on historical results and our best estimates of future experience. The liability for lifetime income benefit riders is included in policy benefit reserves in the consolidated balance sheets and the change in the liability is included in interest sensitive and index product benefits in the consolidated statements of operations. See Results of Operations for the Three Years Ended December 31, 20162017 in this Item 7. for a discussion and presentation of the actual effects of assumption revisions.
A key assumption in the calculation of the liability for lifetime income benefit riders is the percentage of policyholders who elect to receive lifetime income benefit payments. If the percentage of policyholders who elect to receive lifetime income benefit payments under our fee based rider was increased by an additional 10% at December 31, 2017, our liability for lifetime income benefit riders would increase by $94 million recorded through operations as an increase in interest sensitive and index product benefits. A decrease by an additional 10% in the percentage of policyholders who elect to receive lifetime income benefit payments under our fee based rider would decrease our liability for lifetime income benefit riders by $92 million recorded through operations as a decrease in interest sensitive and index product benefits.


Deferred Policy Acquisition Costs and Deferred Sales Inducements
Costs relating to the successful production of new business are not expensed when incurred but instead are capitalized as deferred policy acquisition costs or deferred sales inducements. Only costs which are expected to be recovered from future policy revenues and gross profits may be deferred.
Deferred policy acquisition costs and deferred sales inducements are subject to loss recognition testing on a quarterly basis or when an event occurs that may warrant loss recognition. Deferred policy acquisition costs consist principally of commissions and certain costs of policy issuance. Deferred sales inducements consist of premium and interest bonuses credited to policyholder account balances.

For annuity products, these costs are being amortized generally in proportion to expected gross profits from investment spreads, including the cost of hedging the fixed indexed annuity obligations, and, to a lesser extent, from product charges net of expected excess payments for lifetime income benefit riders, and mortality and expense margins. Current and future period gross profits/margins for fixed index annuities also include the impact of amounts recorded for the change in fair value of derivatives and the change in fair value of embedded derivatives. Current period amortization is adjusted retrospectively through an unlocking process when estimates of current or future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products are revised. Our estimates of future gross profits/margins are based on actuarial assumptions related to the underlying policies terms, lives of the policies, yield on investments supporting the liabilities and level of expenses necessary to maintain the polices over their entire lives. Revisions are made based on historical results and our best estimates of future experience. See Results of Operations for the Three Years Ended December 31, 20162017 in this Item 7. for a discussion and presentation of the actual effects of unlocking.
Estimated future gross profits vary based on a number of sources including investment spread margins, lifetime income benefit rider fees and benefits, surrender charge income, policy persistency, policy administrative expenses and realized gains and losses on investments including credit related other than temporary impairment losses. Estimated future gross profits are most sensitive to changes in investment spread margins which are the most significant component of gross profits. If estimated gross profits for all future years on business in force at December 31, 20162017 were to increase by 10%, our combined balance for deferred policy acquisition costs and deferred sales inducements at December 31, 20162017 would increase by $182.2$194.1 million recorded through operations as a decrease to amortization of deferred policy acquisition costs and deferred sales inducements. Correspondingly, a 10% decrease in estimated gross profits for all future years would result in a $202.7$215.1 million decrease in the combined December 31, 20162017 balances recorded through operations as an increase to amortization of deferred policy acquisition costs and deferred sales inducements.
Deferred Income Taxes
We account for income taxes using the liability method. This method provides for the tax effects of transactions reported in the audited consolidated financial statements for both taxes currently due and deferred. Deferred income taxes reflect the impact of temporary differences between the amount of assets and liabilities recognized for financial reporting purposes and such amounts recognized for tax purposes. A temporary difference is a transaction, or amount of a transaction, that is recognized currently for financial reporting purposes but will not be recognized for tax purposes until a future tax period, or is recognized currently for tax purposes but will not be recognized for financial reporting purposes until a future reporting period. Deferred income taxes are measured by applying enacted tax rates for the years in which the temporary differences are expected to be recovered or settled to the amount of each temporary difference.
The realization of deferred income tax assets is primarily based upon management's estimates of future taxable income. Valuation allowances are established when management estimates, based on available information, that it is more likely than not that deferred income tax assets will not be realized. Significant judgment is required in determining whether valuation allowances should be established, as well as the amount of such allowances. When making such determination, consideration is given to, among other things, the following:
future taxable income of the necessary character exclusive of reversing temporary differences and carryforwards;
future reversals of existing taxable temporary differences;
taxable capital income in prior carryback years; and
tax planning strategies.
Actual realization of deferred income tax assets and liabilities may materially differ from these estimates as a result of changes in tax laws as well as unanticipated future transactions impacting related income tax balances.
The realization of deferred income tax assets related to unrealized losses on our available for sale fixed maturity securities is also based upon our intent to hold these securities for a period of time sufficient to allow for a recovery in fair value and not realize the unrealized loss.
New Accounting Pronouncements
See Note 1 to our audited consolidated financial statements in this Form 10-K beginning on page F-9, which is incorporated by reference in this Item 7, for new accounting pronouncement disclosures.

Item 7A.    Quantitative and Qualitative Disclosures About Market Risk
We seek to invest our available funds in a manner that will maximize shareholder value and fund future obligations to policyholders and debtors, subject to appropriate risk considerations. We seek to meet this objective through investments that: (i) consist substantially of investment grade fixed maturity securities, (ii) have projected returns which satisfy our spread targets and (iii) have characteristics which support the underlying liabilities. Many of our products incorporate surrender charges, market interest rate adjustments or other features to encourage persistency.
We seek to maximize the total return on our available for sale investments through active investment management. Accordingly, we have determined that our available for sale portfolio of fixed maturity securities is available to be sold in response to: (i) changes in market interest rates; (ii) changes in relative values of individual securities and asset sectors; (iii) changes in prepayment risks; (iv) changes in credit quality outlook for certain securities; (v) liquidity needs; and (vi) other factors.

Interest rate risk is our primary market risk exposure. Substantial and sustained increases and decreases in market interest rates can affect the profitability of our products, the fair value of our investments and the amount of interest we pay on our floating rate term loan and subordinated debentures. See Note 9 to our consolidated financial statements, which is incorporated by reference to this Item 7A, for information regarding the floating interest rate on our term loan. Our floating rate trust preferred securities bear interest at the three month LIBOR plus 3.50% - 4.00%. Our outstanding balance of floating rate trust preferred securities was $164.5 million at December 31, 2016,2017, of which $85.5 million has been swapped to a fixed rate for seven years which began in March 2014 and $79.0 million has been capped for a term of seven years which began in July 2014 (See Note 5 to our consolidated financial statements in this Form 10-K). The profitability of most of our products depends on the spreads between interest yield on investments and rates credited on insurance liabilities. We have the ability to adjust crediting rates (caps, participation rates or asset fee rates for fixed index annuities) on substantially all of our annuity liabilities at least annually (subject to minimum guaranteed values). In addition, substantially all of our annuity products have surrender and withdrawal penalty provisions designed to encourage persistency and to help ensure targeted spreads are earned. However, competitive factors, including the impact of the level of surrenders and withdrawals, may limit our ability to adjust or maintain crediting rates at levels necessary to avoid narrowing of spreads under certain market conditions.
A major component of our interest rate risk management program is structuring the investment portfolio with cash flow characteristics consistent with the cash flow characteristics of our insurance liabilities. We use models to simulate cash flows expected from our existing business under various interest rate scenarios. These simulations enable us to measure the potential gain or loss in fair value of our interest rate-sensitive financial instruments, to evaluate the adequacy of expected cash flows from our assets to meet the expected cash requirements of our liabilities and to determine if it is necessary to lengthen or shorten the average life and duration of our investment portfolio. The "duration" of a security is the time weighted present value of the security's expected cash flows and is used to measure a security's sensitivity to changes in interest rates. When the durations of assets and liabilities are similar, exposure to interest rate risk is minimized because a change in value of assets should be largely offset by a change in the value of liabilities.
If interest rates were to increase 10% (31(27 basis points) from levels at December 31, 2016,2017, we estimate that the fair value of our fixed maturity securities would decrease by approximately $1.0 billion. The impact on stockholders' equity of such decrease (net of income taxes and certain adjustments for changes in amortization of deferred policy acquisition costs and deferred sales inducements) would be a decrease of $291.7$306.8 million in accumulated other comprehensive income and a decrease in stockholders' equity. The models used to estimate the impact of a 10% change in market interest rates incorporate numerous assumptions, require significant estimates and assume an immediate and parallel change in interest rates without any management of the investment portfolio in reaction to such change. Consequently, potential changes in value of our financial instruments indicated by the simulations will likely be different from the actual changes experienced under given interest rate scenarios, and the differences may be material. Because we actively manage our investments and liabilities, our net exposure to interest rates can vary over time. However, any such decreases in the fair value of our fixed maturity securities (unless related to credit concerns of the issuer requiring recognition of an other than temporary impairment) would generally be realized only if we were required to sell such securities at losses prior to their maturity to meet our liquidity needs, which we manage using the surrender and withdrawal provisions of our annuity contracts and through other means. See Financial Condition—Liquidity for Insurance Operations for a further discussion of the liquidity risk.
At December 31, 2016, 35%2017, 37% of our fixed income securities have call features, of which 0.1%2.7% ($55.7 million)1.2 billion) were subject to call redemption. Another 3.1%0.2% ($1.3 billion)90.1 million) will become subject to call redemption during 2017.2018. Approximately 70%73% of our fixed income securities that have call features are not callable until within six months of their stated maturities. During the years ended December 31, 20162017 and 2015,2016, we received $1.2$0.6 billion and $0.7$1.2 billion, respectively, in net redemption proceeds related to the exercise of such call options. We have reinvestment risk related to these redemptions to the extent we cannot reinvest the net proceeds in assets with credit quality and yield characteristics similar to the redeemed bonds. Such reinvestment risk typically occurs in a declining rate environment. Should rates decline to levels which tighten the spread between our average portfolio yield and average cost of interest credited on annuity liabilities, we have the ability to reduce crediting rates (caps, participation rates or asset fees for index annuities) on most of our annuity liabilities to maintain the spread at our targeted level. At December 31, 2016,2017, approximately 98%99% of our annuity liabilities were subject to annual adjustment of the applicable crediting rates at our discretion, limited by minimum guaranteed crediting rates specified in the policies. At December 31, 2017, approximately 5% of our annuity liabilities were at minimum guaranteed crediting rates.
We purchase call options on the applicable indices to fund the annual index credits on our fixed index annuities. These options are primarily one-year instruments purchased to match the funding requirements of the underlying policies. Fair value changes associated with those investments are substantially offset by an increase or decrease in the amounts added to policyholder account balances for fixed index products. The difference between proceeds received at expiration of these options and index credits, as shown in the following table, is primarily due to over-hedging as a result of policyholder behavior being different than our expectations.

Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Annual index credits to policyholders on their anniversaries$267,995
 $587,705
 $1,096,504
$1,594,722
 $267,995
 $587,705
Proceeds received at expiration of options related to such credits272,277
 602,436
 1,103,710
1,623,346
 272,277
 602,436
On the anniversary dates of the index policies, we purchase new one-year call options to fund the next annual index credits. The risk associated with these prospective purchases is the uncertainty of the cost, which will determine whether we are able to earn our spread on our index business. We manage this risk through the terms of our fixed index annuities, which permit us to change caps, participation rates and asset fees, subject to contractual features. By modifying caps, participation rates or asset fees, we can limit option costs to budgeted amounts, except in cases where the contractual features would prevent further modifications. Based upon actuarial testing which we conduct as a part of the design of our index products and on an ongoing basis, we believe the risk that contractual features would prevent us from controlling option costs is not material.

Item 8.    Consolidated Financial Statements and Supplementary Data
The audited consolidated financial statements are included as a part of this report on Form 10-K on pages F-1 through F-54.F-52.

Item 9.    Changes in and Disagreements With Accountants on Accounting and Financial Disclosure
None.

Item 9A.    Controls and Procedures
(a)Evaluation of Disclosure Controls and Procedures.
In accordance with the Securities Exchange Act Rules 13a-15(e) and 15d-15(e), our management, under the supervision of our Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this report on Form 10-K. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the design and operation of our disclosure controls and procedures were effective as of December 31, 2016.2017 in recording, processing, summarizing and reporting, on a timely basis, information required to be disclosed by us in the reports that we file or submit under the Exchange Act.
(b)Management's Report on Internal Control over Financial Reporting.
The management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in the Exchange Act Rules 13a-15(f) and 15d-15(f). 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 risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
The Company's management assessed the effectiveness of the Company's internal control over financial reporting as of December 31, 20162017 based upon criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on the assessment, management has determined that we maintained effective internal control over financial reporting as of December 31, 2016.2017.
The Company's independent registered public accounting firm, KPMG LLP, who audited the consolidated financial statements included in this annual report on Form 10-K, has issued an attestation report on the effectiveness of management's internal control over financial reporting as of December 31, 2016.2017. This report appears on page F-2 of this annual report on Form 10-K.
(c)Changes in Internal Control over Financial Reporting.
Other than the remediation described below, thereThere were no changes in our internal control over financial reporting that occurred during the quarter ended December 31, 2016,2017, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
(d) Remediation of the Material Weakness in Internal Control Over Financial Reporting.
A material weakness is defined as a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of a company's annual or interim financial statements will not be prevented or detected on a timely basis. As previously reported, we did not have adequate controls designed and in place to ensure that we correctly implemented changes made to the calculation of lifetime income benefit reserves in the third quarter of 2015. Specifically, the design of our control relating to the review of the implementation of code changes to reflect revised assumptions and the impact of those changes (the “review control”) on the lifetime income benefit reserves was not modified given the complex nature and volume of code changes we made as part of the third quarter review. As a result, we failed to identify an immaterial after-tax calculation error. This amount was corrected in the fourth quarter of 2015 prior to issuing our consolidated financial statements. The control deficiency related to the lifetime income benefit reserves created a reasonable possibility that a material misstatement to the consolidated financial statements would not be prevented or detected on a timely basis and therefore we concluded that the deficiency represented a material weakness in the Company's internal control over financial reporting as of December 31, 2015.
With the oversight of our audit committee, we took corrective steps during 2016 to remediate the underlying causes of the material weakness. The corrective steps we have taken, which are intended to ensure that code changes to the lifetime income benefit reserves calculation function as intended, are:
- The “review control” over the implementation of code changes to our lifetime income benefit reserves was enhanced to ensure that all code changes are reviewed by an individual who is not responsible for the implementation of the code changes.
- The scope of the “review control” over the implementation of code changes to our lifetime income benefit reserves was expanded to include detailed testing of our lifetime income benefit reserves calculation to ensure any code changes are implemented accurately.
The enhanced “review control” as described above was implemented during the fourth quarter of 2015. During the fourth quarter of 2016 and prior to the issuance of our consolidated financial statements for the year ended December 31, 2016, we completed sufficient instances of

testing of the operating effectiveness of the enhanced “review control” and concluded that the above identified material weakness in our internal controls over financial reporting has been fully remediated.

Item 9B.    Other Information
There is no information required to be disclosed on Form 8-K for the quarter ended December 31, 20162017 which has not been previously reported.


PART III
The information required by Part III is incorporated by reference from our definitive proxy statement for our annual meeting of shareholders to be held June 1, 20177, 2018 to be filed with the Commission pursuant to Regulation 14A within 120 days after December 31, 2016.2017.
PART IV

Item 15.    Exhibits and Financial Statement Schedules
Financial Statements and Financial Statement Schedules.    See Index to Consolidated Financial Statements and Schedules on page F-1 for a list of financial statements and financial statement schedules included in this report.
All other schedules to the audited consolidated financial statements required by Article 7 of Regulation S-X are omitted because they are not applicable, not required, or because the information is included elsewhere in the audited consolidated financial statements or notes thereto.
Exhibits.    See Exhibit Index immediately preceding the Exhibits for a list of Exhibits filed with this report.
Exhibit No.Description
3.1
3.2
3.3
3.4
3.5
3.6
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14

Exhibit No.Description
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22
4.23
4.24
10.1 *
10.2 *
10.3 *
10.4 *
10.5 *
10.6 *
10.7
10.8 *
10.9
10.10 *
10.11
10.12 *
10.13 *
10.14 *
10.15 *
10.16 *
10.17 *
10.18 *
10.19
10.20

Exhibit No.Description
10.21
10.22 *
10.23 *
10.24 *
10.25 *
10.26 *
10.27 *
12.1
21.2
23.1
31.1
31.2
32.1
32.2

*Denotes management contract or compensatory plan.

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, this 27th23rd day of February 2017.2018.
 AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY
 By: /s/ JOHN M. MATOVINA
   
John M. Matovina,
Chief Executive Officer and President
Pursuant to the requirements of the Securities Exchange Act of 1934, this registration statement has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated:
Signature Title (Capacity) Date
     
/s/ JOHN M. MATOVINA 
Chairman of the Board, Chief Executive Officer President and DirectorPresident
(Principal Executive Officer)
 February 27, 201723, 2018
John M. Matovina   
     
/s/ TED M. JOHNSON 
Chief Financial Officer and Treasurer
(Principal Financial Officer)
 February 27, 201723, 2018
Ted M. Johnson   
     
/s/ SCOTT A. SAMUELSON 
Vice President—ControllerPresident and Chief Accounting Officer
(Principal Accounting Officer)
 February 27, 201723, 2018
Scott A. Samuelson
/s/ D.J. NOBLEChairman of the Board and DirectorFebruary 27, 2017
D.J. Noble   
     
/s/ JOYCE A. CHAPMAN Director February 27, 201723, 2018
Joyce A. Chapman    
     
/s/ ALEXANDER M. CLARK Director February 27, 201723, 2018
Alexander M. Clark
/s/ BRENDA J. CUSHINGDirectorFebruary 23, 2018
Brenda J. Cushing    
     
/s/ JAMES M. GERLACH Director February 27, 201723, 2018
James M. Gerlach    
     
/s/ ROBERT L. HOWE Director February 27, 201723, 2018
Robert L. Howe    
     
/s/ WILLIAM R. KUNKEL Director February 27, 201723, 2018
William R. Kunkel    
     
/s/ ALAN D. MATULA Director February 27, 201723, 2018
Alan D. Matula    
     
/s/ DAVID S. MULCAHY Director February 27, 201723, 2018
David S. Mulcahy    
     
/s/ GERARD D. NEUGENT Director February 27, 201723, 2018
Gerard D. Neugent    
     
/s/ DEBRA J. RICHARDSON Director February 27, 201723, 2018
Debra J. Richardson    
     
/s/ A.J. STRICKLAND, III Director February 27, 201723, 2018
A.J. Strickland, III    
     

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS AND SCHEDULES
YEARS ENDED DECEMBER 31, 2016,2017, 20152016 and 20142015
Consolidated Financial Statements: 
Notes to Consolidated Financial Statements 
Schedules: 





Report of Independent Registered Public Accounting Firm
TheTo the Stockholders and Board of Directors and Stockholders
American Equity Investment Life Holding Company:
Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting
We have audited the accompanying consolidated balance sheets of American Equity Investment Life Holding Company and subsidiaries (the Company) as of December 31, 20162017 and 2015,2016, and the related consolidated statements of operations, comprehensive income (loss), changes in stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2016. In connection with our audits of2017, and the consolidated financial statements, we also have audited therelated notes and financial statement schedules listed in the Index on page F-1.F-1 (collectively, the consolidated financial statements). We also have audited the Company’s internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of their operations and their cash flows for each of the years in the three-year period ended December 31, 2017, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Commission.
Basis for Opinion
The Company’s management is responsible for these consolidated financial statements, and financial statement schedules, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on thesethe Company’s consolidated financial statements and financial statement schedules and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.
Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the consolidated financial statements, assessingstatements. Our audits also included evaluating the accounting principles used and significant estimates made by management, andas well as evaluating the overall presentation of the consolidated financial statement presentation.statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.
Definition and Limitations of Internal Control Over Financial Reporting
A company’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’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) 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 (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’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 become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the American Equity Investment Life Holding Company and subsidiaries as of December 31, 2016 and 2015, and the results of their operations and their cash flows for each of the years in the three-year period ended December 31, 2016, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the related financial statement schedules, when considered in relation to the basic consolidated financial statements taken as a whole, present fairly, in all material respects, the information set forth therein. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).
/s/ KPMG LLP
We have served as the Company’s auditor since 2005.
Des Moines, Iowa
February 27, 201723, 2018


AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Dollars in thousands, except share and per share data)

December 31,December 31,
2016 20152017 2016
Assets      
Investments:      
Fixed maturity securities:      
Available for sale, at fair value (amortized cost: 2016 - $39,953,955; 2015 - $35,823,710)$41,060,494
 $36,421,839
Held for investment, at amortized cost (fair value: 2016 - $68,766; 2015 - $65,377)76,825
 76,622
Available for sale, at fair value (amortized cost: 2017 - $43,116,759; 2016 - $39,953,955)$45,372,989
 $41,060,494
Held for investment, at amortized cost (fair value: 2017 - $76,460; 2016 - $68,766)77,041
 76,825
Mortgage loans on real estate2,480,956
 2,435,257
2,665,531
 2,480,956
Derivative instruments830,519
 337,256
1,568,380
 830,519
Other investments308,774
 299,358
616,764
 308,774
Total investments44,757,568
 39,570,332
50,300,705
 44,757,568
      
Cash and cash equivalents791,266
 397,749
1,434,045
 791,266
Coinsurance deposits4,639,492
 3,187,470
4,858,289
 4,639,492
Accrued investment income397,773
 362,104
429,008
 397,773
Deferred policy acquisition costs2,905,377
 2,905,136
2,714,523
 2,905,377
Deferred sales inducements2,208,218
 2,232,148
2,001,892
 2,208,218
Deferred income taxes168,578
 232,683
38,147
 168,578
Income taxes recoverable11,474
 29,599

 11,474
Other assets173,726
 112,171
254,127
 173,726
Total assets$56,053,472
 $49,029,392
$62,030,736
 $56,053,472
      
Liabilities and Stockholders' Equity      
Liabilities:      
Policy benefit reserves$51,637,026
 $45,495,431
$56,142,673
 $51,637,026
Other policy funds and contract claims298,347
 324,850
282,884
 298,347
Notes and loan payable493,755
 393,227
494,093
 493,755
Subordinated debentures241,853
 241,452
242,565
 241,853
Income taxes payable34,285
 
Other liabilities1,090,896
 629,897
1,984,079
 1,090,896
Total liabilities53,761,877
 47,084,857
59,180,579
 53,761,877
      
Stockholders' equity:      
Preferred stock, par value $1 per share, 2,000,000 shares authorized,
2016 and 2015 - no shares issued and outstanding

 
Common stock, par value $1 per share, 200,000,000 shares authorized; issued and outstanding:
2016 - 88,001,130 shares (excluding 2,887,082 treasury shares);
2015 - 81,354,079 shares (excluding 3,448,750 treasury shares)
88,001
 81,354
Preferred stock, par value $1 per share, 2,000,000 shares authorized,
2017 and 2016 - no shares issued and outstanding

 
Common stock, par value $1 per share, 200,000,000 shares authorized; issued and outstanding:
2017 - 89,331,087 shares (excluding 2,064,727 treasury shares);
2016 - 88,001,130 shares (excluding 2,887,082 treasury shares)
89,331
 88,001
Additional paid-in capital770,344
 630,367
791,446
 770,344
Accumulated other comprehensive income339,966
 201,663
724,599
 339,966
Retained earnings1,093,284
 1,031,151
1,244,781
 1,093,284
Total stockholders' equity2,291,595
 1,944,535
2,850,157
 2,291,595
Total liabilities and stockholders' equity$56,053,472
 $49,029,392
$62,030,736
 $56,053,472
See accompanying notes to consolidated financial statements.


AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS
(Dollars in thousands, except per share data)


Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Revenues:          
Premiums and other considerations$43,767
 $36,048
 $32,623
$34,228
 $43,767
 $36,048
Annuity product charges173,579
 136,168
 118,990
200,494
 173,579
 136,168
Net investment income1,849,872
 1,692,192
 1,531,667
1,991,997
 1,849,872
 1,692,192
Change in fair value of derivatives164,219
 (336,146) 504,825
1,677,871
 164,219
 (336,146)
Net realized gains (losses) on investments, excluding other than temporary
impairment ("OTTI") losses
11,524
 10,211
 (4,003)
Net realized gains on investments, excluding other than temporary impairment ("OTTI") losses10,509
 11,524
 10,211
OTTI losses on investments:          
Total OTTI losses(21,349) (25,547) 
(2,758) (21,349) (25,547)
Portion of OTTI losses recognized in (from) other comprehensive income(1,330) 6,011
 (2,627)(1,872) (1,330) 6,011
Net OTTI losses recognized in operations(22,679) (19,536) (2,627)(4,630) (22,679) (19,536)
Loss on extinguishment of debt
 
 (12,502)(18,817) 
 
Total revenues2,220,282
 1,518,937
 2,168,973
3,891,652
 2,220,282
 1,518,937
          
Benefits and expenses:          
Insurance policy benefits and change in future policy benefits52,483
 45,458
 41,815
43,219
 52,483
 45,458
Interest sensitive and index product benefits725,472
 968,053
 1,473,700
2,023,668
 725,472
 968,053
Amortization of deferred sales inducements251,166
 209,390
 131,419
176,612
 251,166
 209,390
Change in fair value of embedded derivatives543,465
 (464,698) 32,321
919,735
 543,465
 (464,698)
Interest expense on notes and loan payable28,248
 28,849
 36,370
30,368
 28,248
 28,849
Interest expense on subordinated debentures12,958
 12,239
 12,122
14,124
 12,958
 12,239
Amortization of deferred policy acquisition costs374,012
 286,114
 163,578
255,964
 374,012
 286,114
Other operating costs and expenses102,231
 96,218
 81,584
111,691
 102,231
 96,218
Total benefits and expenses2,090,035
 1,181,623
 1,972,909
3,575,381
 2,090,035
 1,181,623
Income before income taxes130,247
 337,314
 196,064
316,271
 130,247
 337,314
Income tax expense47,004
 117,484
 70,041
141,626
 47,004
 117,484
Net income$83,243
 $219,830
 $126,023
$174,645
 $83,243
 $219,830
          
Earnings per common share$0.98
 $2.78
 $1.69
$1.96
 $0.98
 $2.78
Earnings per common share - assuming dilution$0.97
 $2.72
 $1.58
$1.93
 $0.97
 $2.72
     
Weighted average common shares outstanding (in thousands):          
Earnings per common share84,793
 78,937
 74,431
88,982
 84,793
 78,937
Earnings per common share - assuming dilution85,605
 80,961
 79,894
90,311
 85,605
 80,961
See accompanying notes to consolidated financial statements.

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(Dollars in thousands)

Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Net income$83,243
 $219,830
 $126,023
$174,645
 $83,243
 $219,830
Other comprehensive income (loss):          
Change in net unrealized investment gains/losses (1)207,994
 (797,374) 1,038,604
556,384
 207,994
 (797,374)
Noncredit component of OTTI losses (1)556
 (2,927) 1,265
915
 556
 (2,927)
Reclassification of unrealized investment gains/losses to net income (1)4,224
 703
 (1,092)4,496
 4,224
 703
Other comprehensive income (loss) before income tax212,774
 (799,598) 1,038,777
561,795
 212,774
 (799,598)
Income tax effect related to other comprehensive income (loss)(74,471) 279,860
 (363,572)(177,162) (74,471) 279,860
Other comprehensive income (loss)138,303
 (519,738) 675,205
384,633
 138,303
 (519,738)
Comprehensive income (loss)$221,546
 $(299,908) $801,228
$559,278
 $221,546
 $(299,908)
(1)Net of related adjustments to amortization of deferred sales inducements and deferred policy acquisition costs.
See accompanying notes to consolidated financial statements.



AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
(Dollars in thousands, except per share data)


Common
Stock
 
Additional
Paid-in
Capital
 
Unallocated
Common
Stock Held
by ESOP
 
Accumulated
Other
Comprehensive
Income
 
Retained
Earnings
 
Total
Stockholders'
Equity
Common
Stock
 
Additional
Paid-in
Capital
 
Accumulated
Other
Comprehensive
Income
 
Retained
Earnings
 
Total
Stockholders'
Equity
Balance at December 31, 2013$70,535
 $550,400
 $(631) $46,196
 $718,187
 $1,384,687
Net income for the year
 
 
 
 126,023
 126,023
Other comprehensive income
 
 
 675,205
 
 675,205
Allocation of 58,618 shares of common stock by ESOP, including excess income tax benefits
 721
 631
 
 
 1,352
Share-based compensation, including excess income tax benefits
 7,705
 
 
 
 7,705
Issuance of 1,567,607 shares of common stock under compensation plans, including excess income tax benefits1,568
 13,137
 
 
 
 14,705
Extinguishment of convertible senior notes, net of tax, including 3,959,396 shares of common stock issued upon conversion3,959
 (7,488) 
 
 
 (3,529)
Warrants reclassified to embedded derivative liability to be settled in cash
 (51,257) 
 
 
 (51,257)
Dividends on common stock ($0.20 per share)
 
 
 
 (15,015) (15,015)
Balance at December 31, 201476,062
 513,218
 
 721,401
 829,195
 2,139,876
$76,062
 $513,218
 $721,401
 $829,195
 $2,139,876
Net income for the year
 
 
 
 219,830
 219,830

 
 
 219,830
 219,830
Other comprehensive loss
 
 
 (519,738) 
 (519,738)
 
 (519,738) 
 (519,738)
Share-based compensation, including excess income tax benefits
 9,976
 
 
 
 9,976

 9,976
 
 
 9,976
Issuance of common stock via public offering4,300
 100,179
 
 
 
 104,479
4,300
 100,179
 
 
 104,479
Issuance of 944,504 shares of common stock under compensation plans, including excess income tax benefits944
 7,042
 
 
 
 7,986
944
 7,042
 
 
 7,986
Issuance of 47,868 shares of common stock to settle warrants that have reached their expiration48
 (48) 
 
 
 
48
 (48) 
 
 
Dividends on common stock ($0.22 per share)
 
 
 
 (17,874) (17,874)
 
 
 (17,874) (17,874)
Balance at December 31, 201581,354
 630,367
 
 201,663
 1,031,151
 1,944,535
81,354
 630,367
 201,663
 1,031,151
 1,944,535
Net income for the year
 
 
 
 83,243
 83,243

 
 
 83,243
 83,243
Other comprehensive income
 
 
 138,303
 
 138,303

 
 138,303
 
 138,303
Share-based compensation, including excess income tax benefits
 7,218
 
 
 
 7,218

 7,218
 
 
 7,218
Issuance of common stock via settlement of forward sale agreements5,590
 129,072
 
 
 
 134,662
5,590
 129,072
 
 
 134,662
Issuance of 964,053 shares of common stock under compensation plans, including excess income tax benefits964
 3,781
 
 
 
 4,745
964
 3,781
 
 
 4,745
Issuance of 92,998 shares of common stock to settle warrants that have reached their expiration93
 (94) 
 
 
 (1)93
 (94) 
 
 (1)
Dividends on common stock ($0.24 per share)
 
 
 
 (21,110) (21,110)
 
 
 (21,110) (21,110)
Balance at December 31, 2016$88,001
 $770,344
 $
 $339,966
 $1,093,284
 $2,291,595
88,001
 770,344
 339,966
 1,093,284
 2,291,595
Net income for the year
 
 
 174,645
 174,645
Other comprehensive income
 
 384,633
 
 384,633
Share-based compensation
 6,464
 
 
 6,464
Issuance of 1,329,957 shares of common stock under compensation plans1,330
 14,638
 
 
 15,968
Dividends on common stock ($0.26 per share)
 
 
 (23,148) (23,148)
Balance at December 31, 2017$89,331
 $791,446
 $724,599
 $1,244,781
 $2,850,157
See accompanying notes to consolidated financial statements.

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Dollars in thousands)

Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Operating activities          
Net income$83,243
 $219,830
 $126,023
$174,645
 $83,243
 $219,830
Adjustments to reconcile net income to net cash provided by operating activities:          
Interest sensitive and index product benefits725,472
 968,053
 1,473,700
2,023,668
 725,472
 968,053
Amortization of deferred sales inducements251,166
 209,390
 131,419
176,612
 251,166
 209,390
Annuity product charges(173,579) (136,168) (118,990)(200,494) (173,579) (136,168)
Change in fair value of embedded derivatives543,465
 (464,698) 32,321
919,735
 543,465
 (464,698)
Increase in traditional life and accident and health insurance reserves12,724
 5,097
 2,385
(33) 12,724
 5,097
Policy acquisition costs deferred(543,325) (657,639) (426,882)(406,641) (543,325) (657,639)
Amortization of deferred policy acquisition costs374,012
 286,114
 163,578
255,964
 374,012
 286,114
Provision for depreciation and other amortization3,879
 4,610
 9,490
3,948
 3,879
 4,610
Amortization of discounts and premiums on investments1,070
 (8,464) (14,960)15,431
 1,070
 (8,464)
Loss on extinguishment of debt
 
 12,502
18,817
 
 
Realized gains (losses) on investments and net OTTI losses recognized in operations11,155
 9,325
 6,630
(5,879) 11,155
 9,325
Change in fair value of derivatives(165,727) 334,300
 (506,328)(1,678,956) (165,727) 334,300
Deferred income taxes (benefits)(10,408) 41,916
 (46,504)(46,730) (10,408) 41,916
Share-based compensation6,692
 7,373
 3,544
6,464
 6,692
 7,373
Change in accrued investment income(35,669) (35,545) (24,918)(31,235) (35,669) (35,545)
Change in income taxes recoverable/payable18,125
 (20,027) (19,405)45,759
 18,125
 (20,027)
Change in other assets1,812
 71
 (2,771)448
 1,812
 71
Change in other policy funds and contract claims(34,411) (49,092) (60,931)(23,101) (34,411) (49,092)
Change in collateral held for derivatives414,655
 (269,474) 27,839
772,181
 414,655
 (269,474)
Change in other liabilities(55,940) 75,794
 (51,008)(84,416) (55,940) 75,794
Other(14,089) (15,962) (8,948)(13,794) (14,089) (15,962)
Net cash provided by operating activities1,414,322
 504,804
 707,786
1,922,393
 1,414,322
 504,804
          
Investing activities          
Sales, maturities, or repayments of investments:          
Fixed maturity securities—available for sale2,746,510
 1,612,121
 1,490,906
Fixed maturity securities - available for sale1,911,991
 2,746,510
 1,612,121
Mortgage loans on real estate383,763
 468,102
 453,937
351,255
 383,763
 468,102
Derivative instruments284,470
 640,467
 1,169,874
1,697,948
 284,470
 640,467
Other investments14,045
 16,792
 23,165
10,571
 14,045
 16,792
Acquisitions of investments:          
Fixed maturity securities—available for sale(6,883,895) (7,256,137) (5,191,781)
Fixed maturity securities - available for sale(5,026,640) (6,883,895) (7,256,137)
Mortgage loans on real estate(428,833) (455,286) (327,654)(535,249) (428,833) (455,286)
Derivative instruments(602,349) (588,859) (492,296)(691,428) (602,349) (588,859)
Other investments(11,559) (13,092) (72,548)(305,575) (11,559) (13,092)
Purchases of property, furniture and equipment(1,197) (1,313) (1,352)(4,809) (1,197) (1,313)
Net cash used in investing activities(4,499,045) (5,577,205) (2,947,749)(2,591,936) (4,499,045) (5,577,205)

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)
(Dollars in thousands)

Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Financing activities          
Receipts credited to annuity and single premium universal life policyholder account balances$7,092,348
 $7,051,227
 $4,160,005
Receipts credited to annuity policyholder account balances$4,152,264
 $7,092,348
 $7,051,227
Coinsurance deposits(1,317,555) (80,777) 109,184
(6,597) (1,317,555) (80,777)
Return of annuity policyholder account balances(2,535,669) (2,271,950) (2,025,203)(2,809,486) (2,535,669) (2,271,950)
Financing fees incurred and deferred(1,456) 
 (100)(5,817) (1,456) 
Proceeds from issuance of notes payable499,650
 
 
Repayment of notes payable
 (48,152) (219,094)(413,252) 
 (48,152)
Proceeds from issuance of debt100,000
 
 
Repayment of loan payable(100,000) 
 
Proceeds from issuance of loan payable
 100,000
 
Net proceeds from settlement of notes hedges and warrants
 25,775
 16,558

 
 25,775
Acquisition of common stock
 (16) 

 
 (16)
Excess tax benefits realized from share-based compensation plans527
 3,649
 5,184

 527
 3,649
Proceeds from issuance of common stock139,654
 112,481
 13,681
14,028
 139,654
 112,481
Change in checks in excess of cash balance21,501
 (5,727) (1,252)4,680
 21,501
 (5,727)
Dividends paid(21,110) (17,874) (15,015)(23,148) (21,110) (17,874)
Net cash provided by financing activities3,478,240
 4,768,636
 2,043,948
1,312,322
 3,478,240
 4,768,636
Increase (decrease) in cash and cash equivalents393,517
 (303,765) (196,015)642,779
 393,517
 (303,765)
Cash and cash equivalents at beginning of year397,749
 701,514
 897,529
791,266
 397,749
 701,514
Cash and cash equivalents at end of year$791,266
 $397,749
 $701,514
$1,434,045
 $791,266
 $397,749
          
Supplemental disclosures of cash flow information          
Cash paid during the year for:          
Interest expense$39,647
 $39,118
 $42,989
$55,445
 $39,647
 $39,118
Income taxes39,066
 91,887
 132,754
142,627
 39,066
 91,887
Non-cash operating activity:          
Deferral of sales inducements353,966
 486,924
 330,079
216,172
 353,966
 486,924
Non-cash investing activity:          
Real estate acquired in satisfaction of mortgage loans
 
 14,555
Mortgage loan on real estate sold
 4,879
 

 
 4,879
Non-cash financing activity:          
Common stock issued in extinguishment of debt
 
 95,993
Common stock issued to settle warrants that have expired93
 48
 

 93
 48
See accompanying notes to consolidated financial statements.


AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1.     Significant Accounting Policies
Nature of Operations
American Equity Investment Life Holding Company ("we", "us", "our" or "parent company"), through its wholly-owned subsidiaries, American Equity Investment Life Insurance Company ("American Equity Life"), American Equity Investment Life Insurance Company of New York ("American Equity Life of New York") and Eagle Life Insurance Company ("Eagle Life"), is licensed to sell insurance products in 50 states and the District of Columbia at December 31, 2016.2017. We operate solely in the insurance business.
We primarily market fixed index and fixed rate annuities and to a lesser extent, life insurance. Premiums and annuityannuities. Annuity deposits (net of coinsurance) collected in 2016,2017, 20152016 and 20142015, by product type were as follows:
 Year Ended December 31, Year Ended December 31,
Product Type 2016 2015 2014 2017 2016 2015
 (Dollars in thousands) (Dollars in thousands)
Fixed index annuities $5,035,818
 $6,491,981
 $3,911,109
 $3,668,121
 $5,035,818
 $6,491,981
Annual reset fixed rate annuities 63,582
 44,715
 56,647
 74,572
 63,582
 44,715
Multi-year fixed rate annuities 256,894
 42,709
 21,125
 22,291
 256,894
 42,709
Single premium immediate annuities (SPIA) 35,851
 32,752
 24,580
 24,946
 35,851
 32,752
Life insurance 9,946
 10,917
 10,810
 $5,402,091
 $6,623,074
 $4,024,271
 $3,789,930
 $5,392,145
 $6,612,157
Agents contracted with us through two national marketing organizations accounted for more than 10% of the annuity deposits and insurance premium collectionswe collected during 2016 by American Equity Life2017 representing 19%14% and 10%, individually, of the annuity deposits and insurance premiums collected by American Equity Life.collected. Agents contracted with us through one national marketing organization accounted for more than 10% of the annuity deposits and insurance premium collectionswe collected during 2015 by American Equity Life,2016 representing 24%15% of the annuity deposits and insurance premiums collected by American Equity Life.collected. Agents contracted with us through twoone national marketing organizationsorganization accounted for more than 10% of the annuity deposits and insurance premium collectionswe collected during 2014 by American Equity Life, each2015 representing 10%22% individually, of the annuity deposits and insurance premiums collected by American Equity Life.collected.
Consolidation and Basis of Presentation
The consolidated financial statements include our accounts and our wholly-owned subsidiaries: American Equity Life, American Equity Life of New York, Eagle Life, AERL, L.C., American Equity Capital, Inc., American Equity Investment Properties, L.C., American Equity Advisors, Inc. and American Equity Investment Service Company. All significant intercompany accounts and transactions have been eliminated.
Estimates and Assumptions
The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates and assumptions are utilized in the calculation of deferred policy acquisition costs, deferred sales inducements, policy benefit reserves, valuation of derivatives, including embedded derivatives on index annuity reserves, contingent convertible senior notes, valuation of investments, other than temporary impairment of investments, allowances for loan losses on mortgage loans and valuation allowances on deferred tax assets. A description of each critical estimate is incorporated within the discussion of the related accounting policies which follow. It is reasonably possible that actual experience could differ from the estimates and assumptions utilized.
Investments
Fixed maturity securities (bonds and redeemable preferred stocks maturing more than one year after issuance) that may be sold prior to maturity are classified as available for sale. Available for sale securities are reported at fair value and unrealized gains and losses, if any, on these securities are included directly in a separate component of stockholders' equity, net of income taxes and certain adjustments for assumed changes in amortization of deferred policy acquisition costs and deferred sales inducements. Fair values, as reported herein, of fixed maturity and equity securities are based on quoted market prices in active markets when available, or for those fixed maturity securities not actively traded, yield data and other factors relating to instruments or securities with similar characteristics are used. See Note 2 for more information on the determination of fair value. Premiums and discounts are amortized/accrued using methods which result in a constant yield over the securities' expected lives. Amortization/accrual of premiums and discounts on residential and commercial mortgage backed securities incorporate prepayment assumptions to estimate the securities' expected lives. Interest income is recognized as earned.

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Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Fixed maturity securities that we have the positive intent and ability to hold to maturity are classified as held for investment. Such securities may, at times, be called prior to maturity. Held for investment securities are reported at cost adjusted for amortization of premiums and discounts. Changes in the fair value of these securities, except for declines that are other than temporary, are not reflected in our consolidated financial statements.

F-9

Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The carrying amounts of our impaired investments in fixed maturity and equity securities are adjusted for declines in value that are other than temporary. Other than temporary impairment losses are reported as a component of revenues in the consolidated statements of operations, which presents the amount of noncredit impairment losses for certain fixed maturity securities that is reported in accumulated other comprehensive income (loss). See Note 3 for further discussion of other than temporary impairment losses.
Deterioration in credit quality of the companies or assets backing our investment securities, deterioration in the condition of the financial services industry, imbalances in liquidity recurring in the marketplace or declines in real estate values may further affect the fair value of these investment securities and increase the potential that certain unrealized losses will be recognized as other than temporary impairments in the future.
Mortgage loans on real estate are reported at cost, adjusted for amortization of premiums and accrual of discounts. Interest income is recorded when earned; however, interest ceases to accrue for loans on which interest is more than 90 days past due based upon contractual terms and/or when the collection of interest is not considered probable. We evaluate the mortgage loan portfolio for the establishment of a loan loss allowance by specific identification of impaired loans and the measurement of an estimated loss, if any, for each impaired loan identified and an analysis of the mortgage loan portfolio for the need of a general loan allowance for probable losses on all loans. If we determine that the value of any specific mortgage loan is impaired, the carrying amount of the mortgage loan will be reduced to its fair value, based upon the present value of expected future cash flows from the loan discounted at the loan's contractual interest rate, or the fair value of the underlying collateral, less costs to sell. The amount of the general loan allowance, if any, is based upon our evaluation of the probability of collection, historical loss experience, delinquencies, credit concentrations, underwriting standards and national and local economic conditions. The carrying value of impaired loans is reduced by the establishment of an allowance for loan losses, changes to which are recognized as realized gains or losses on investments. Interest income on impaired loans is recorded on a cash basis.
Other invested assets include company owned life insurance, equity securities, real estate, limited partnerships accounted for using the equity method and policy loans. Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the end of the reporting period, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. Equity securities are classified as available for sale and are reported at fair value. Unrealized gains and losses are included directly in a separate component of stockholders' equity, net of income taxes and certain adjustments for assumed changes in amortization of deferred policy acquisition costs and deferred sales inducements. Dividends are recognized when declared. Policy loans are stated at current unpaid principal balances.
Real estate owned is reported at cost less accumulated depreciation. Cost is determined at the time ownership is acquired in satisfaction of mortgage loans and is the lower of the carrying value of the mortgage loan or fair value of the real estate less its estimated cost to sell. Buildings and improvements are depreciated using the straight-line method over their estimated useful lives. Impairment losses on real estate owned are recognized when there are indicators of impairment present and the expected future undiscounted cash flows are not sufficient to recover the real estate's carrying value. Any impairment losses are reported as realized losses and are part of net income.
Derivative Instruments
Our derivative instruments include call options used to fund fixed index annuity credits, interest rate swap and caps used to manage interest rate risk associated with the floating rate component on certain of our subordinated debentures, call options to hedge the conversion spread on our convertible senior notes (see Note 9) and certain other derivative instruments embedded in other contracts. All of our derivative instruments are recognized in the balance sheet at fair value and changes in fair value are recognized immediately in operations. See Note 5 for more information on derivative instruments.
Cash and Cash Equivalents
We consider all highly liquid debt instruments purchased with an original maturity of three months or less to be cash equivalents.
We also consider reverse repurchase agreements, which typically have an initial maturity of 6 weeks or less, to be cash equivalents. Amounts advanced under these agreements represent short-term loans that carry a fixed rate of interest. Borrowers under these agreements are required to post collateral that is investment grade debt securities with fair value in excess of the amount advanced.
Book Overdrafts
Under our cash management system, checks issued but not yet presented to banks frequently result in overdraft balances for accounting purposes and are classified as Other liabilities on our consolidated balance sheets. We report the changes in the amount of the overdraft balance as a financing activity in our consolidated statement of cash flows as Change in checks in excess of cash balance.

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Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Deferred Policy Acquisition Costs and Deferred Sales Inducements
To the extent recoverable from future policy revenues and gross profits, certain costs that are incremental or directly related to the successful production of new business are not expensed when incurred but instead are capitalized as deferred policy acquisition costs or deferred sales inducements. Deferred policy acquisition costs and deferred sales inducements are subject to loss recognition testing on a quarterly basis or when an event occurs that may warrant loss recognition. Deferred policy acquisition costs consist primarily of commissions and certain costs of policy issuance. Deferred sales inducements consist of premium and interest bonuses credited to policyholder account balances.

F-10

Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


For annuity products, these capitalized costs are being amortized generally in proportion to expected gross profits from investment spreads, including the cost of hedging the fixed indexed annuity obligations, and, to a lesser extent, from product charges net of expected excess payments for lifetime income benefit riders, and mortality and expense margins. Current and future period gross profits/margins for fixed index annuities also include the impact of amounts recorded for the change in fair value of derivatives and the change in fair value of embedded derivatives. That amortization is adjusted retrospectively through an unlocking process when estimates of current or future gross profits/margins (including the impact of net realized gains on investments and net OTTI losses recognized in operations) to be realized from a group of products are revised. Deferred policy acquisition costs and deferred sales inducements are also adjusted for the change in amortization that would have occurred if available for sale fixed maturity securities and equity securities had been sold at their aggregate fair value at the end of the reporting period and the proceeds reinvested at current yields. The impact of this adjustment is included in accumulated other comprehensive income within consolidated stockholders' equity, net of applicable taxes. See Note 6 for more information on deferred policy acquisition costs and deferred sales inducements.
Policy Benefit Reserves
Policy benefit reserves for fixed index annuities with returns linked to the performance of a specified market index are equal to the sum of the fair value of the embedded derivatives and the host (or guaranteed) component of the contracts. The host value is established at inception of the contract and accreted over the policy's life at a constant rate of interest. Future policy benefit reserves for fixed index annuities earning a fixed rate of interest and other deferred annuity products are computed under a retrospective deposit method and represent policy account balances before applicable surrender charges. For the years ended December 31, 2017, 2016 2015 and 2014,2015, interest crediting rates for these products ranged from 1.00% to 3.30%.
The liability for lifetime income benefit riders is based on estimates of the value of benefit payments expected to be paid in excess of projected policy values recognizing the excess over the expected lives of the underlying policies based on actual and expected assessments including spreads and product charges and fees. The inputs used in the calculation of the liability for lifetime income benefit riders include actual policy values, actual income account values, actual payout factors, actual roll-up rates and our best estimate assumptions for future policy growth, future policy decrements, the ages at which policyholders are expected to elect to begin to receive lifetime income benefit payments, the percentage of policyholders who elect to receive lifetime income benefit payments and the type of income benefit payments selected upon election. See Note 6 for more information on lifetime income benefit rider reserves.
Policy benefit reserves are not reduced for amounts ceded under coinsurance agreements which are reported as coinsurance deposits on our consolidated balance sheets. See Note 7 for more information on reinsurance.
The liability for future policy benefits for traditional life insurance is based on net level premium reserves, including assumptions as to interest, mortality, and other assumptions underlying the guaranteed policy cash values. Reserve interest assumptions are level and range from 3.00% to 5.50%. Policy benefit claims are charged to expense in the period that the claims are incurred.
Deferred Income Taxes
Deferred income tax assets or liabilities are computed based on the temporary differences between the financial statement and income tax bases of assets and liabilities using the enacted marginal tax rate. The effect on deferred income tax assets and liabilities resulting from a change in the enacted marginal tax rate is recognized in income in the period that includes the enactment date. Deferred income tax expenses or benefits are based on the changes in the asset or liability from period to period. Deferred income tax assets are subject to ongoing evaluation of whether such assets will more likely than not be realized. The realization of deferred income tax assets primarily depends on generating future taxable income during the periods in which temporary differences become deductible. Deferred income tax assets are reduced by a valuation allowance if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. In making such a determination, all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations, is considered. The realization of deferred income tax assets related to unrealized losses on available for sale fixed maturity securities is also based upon our intent and ability to hold those securities for a period of time sufficient to allow for a recovery in fair value and not realize the unrealized loss.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Recognition of Premium Revenues and Costs
Revenues for annuity products include surrender and living income benefit rider charges assessed against policyholder account balances during the period. Interest sensitive and index product benefits related to annuity products include interest credited or index credits to policyholder account balances pursuant to accounting by insurance companies for certain long-duration contracts. The change in fair value of the embedded derivatives for fixed index annuities equals the change in the difference between policy benefit reserves for fixed index annuities computed under the derivative accounting standard and the long-duration contracts accounting standard at each balance sheet date.
Considerations from immediate annuities and supplemental contract annuities with life contingencies are recognized as revenue when the policy is issued.
Traditional life insurance premiums are recognized as revenues over the premium-paying period. Certain group policies include provisions for annual experience refunds of premiums equal to net premiums received less an administrative fee and less claims incurred. Such amounts (2016 - $1.5 million; 2015 - $1.5 million; and 2014 - $1.7 million) are reported as a reduction of traditional life insurance premiums in the consolidated statements of operations. Future policy benefits are recognized as expenses over the life of the policy by means of the provision for future policy benefits.
All insurance-related revenues, including the change in the fair value of derivatives for call options related to the business ceded under coinsurance agreements (see Note 7), benefits, losses and expenses are reported net of reinsurance ceded.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Other Comprehensive Income (Loss)
Other comprehensive income (loss) includes all changes in stockholders' equity during a period except those resulting from investments by and distributions to stockholders. Other comprehensive income (loss) excludes net realized investment gains (losses) included in net income which merely representrepresents transfers from unrealized to realized gains and losses.
Adopted Accounting Pronouncements
In April 2015,March 2016, the Financial Accounting Standards Board ("FASB") issued an accounting standards update ("ASU") which requires that debt issuance costs related to athe accounting for share-based payment transactions. The aspects of accounting guidance affected by this ASU are income taxes, classification of awards as either equity or liabilities, and classification on the statement of cash flows. We adopted this ASU on January 1, 2017. The adoption of this ASU resulted in an income tax benefit of $2.8 million being recognized debt liability be presented in operations during the balance sheet as a direct deduction fromyear ended December 31, 2017 due to the carrying amount of that debt liability, consistent with debt discounts. Subsequently,requirement under this standard to recognize excess tax benefits related to share-based payment awards in August 2015,income tax expense.
New Accounting Pronouncements
In May 2014, the FASB issued an ASU related to revenue arising from contracts with customers. This ASU, which replaces most current revenue recognition guidance, including industry specific guidance, prescribes that states that the Securities and Exchange Commission staff would not object to an entity deferring and presenting debt issuance costs relatedshould recognize revenue to line-of-credit arrangements asreflect the transfer of promised goods or services to customers in an asset and expensingamount that reflects the consideration to which the entity expects to be entitled in exchange for those costs ratably over the term of the line of credit arrangement. These ASU's becamegoods or services. This ASU will be effective for us on January 1, 2016,2018 and retroactive application was required. Adoption of these ASU's didmay be adopted using either a full retrospective or a modified retrospective approach. This ASU will not have a materialany immediate impact on our consolidated financial statements.
New Accounting Pronouncementsstatements as revenues related to our insurance and investment contracts are excluded from its scope.
In January 2016, the FASB issued an ASU that, among other aspects of recognition, measurement, presentation and disclosure of financial instruments, primarily requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Additionally, it changes the accounting for financial liabilities measured at fair value under the fair value option and eliminates some disclosures regarding fair value of financial assets and liabilities measured at amortized cost. This ASU will be effective for us on January 1, 2018, and we2018. This ASU will not have not determined the effect it will haveany immediate impact on our consolidated financial statements.statements or related financial statement disclosures.
In February 2016, the FASB issued an ASU that will require recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This ASU affects accounting and disclosure more dramatically for lessees as accounting for lessors is mainly unchanged. This ASU will be effective for us on January 1, 2019, with early adoption permitted, and we have not determinedpermitted. We are in the effect it will have on our consolidated financial statements.
In March 2016,process of evaluating the FASB issued an ASU related to the accounting for share-based payment transactions. The aspects of accountingimpact this guidance affected by this ASU are income taxes, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This ASU will be effective for us on January 1, 2017, with early adoption permitted, and we have not determined the effect it willmay have on our consolidated financial statements.
In June 2016, the FASB issued an ASU that significantly changes the impairment model for most financial assets that are measured at amortized cost and certain other instruments from an incurred loss model to an expected loss model that requires these assets be presented at the net amount expected to be collected. In addition, credit losses on available for sale debt securities should be recorded through an allowance account.  This ASU will be effective for us on January 1, 2020, with early adoption permitted, andpermitted. While we have not yet determinedare still in the process of evaluating the full impact this updated guidance will have on our consolidated financial statements.statements, we believe the new impairment model will lead to earlier recognition of credit losses for our commercial mortgage loans.
In August 2016, the FASB issued an ASU that clarifies how certain cash receipts and cash payments are to be presented and classified in the statement of cash flows. This ASU will be effective for us on January 1, 2018 and requires a retrospective transition method. We expect the immediate impact to our consolidated financial statements to be insignificant and limited to reclassification of certain cash flows from investing activities to operating activities within our consolidated statements of cash flows.
In March 2017, the FASB issued an ASU that applies to certain callable debt securities where the amortized cost basis is at a premium to the price repayable by the issuer at the earliest call date. Under this guidance, the premium will be amortized to the first call date. This ASU will be effective for us on January 1, 2019, with early adoption permitted, and we have not yet determinedpermitted. We are in the process of evaluating the impact this updated guidance willmay have on our consolidated financial statements.
In February 2018, the FASB issued an ASU that allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017 ("Tax Reform"). This ASU will be effective for us on January 1, 2019, with early adoption permitted. We plan to early adopt this ASU during the first quarter of 2018 and expect to reclassify $128 million between accumulated other comprehensive income and retained earnings within our consolidated balance sheet.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


2.     Fair Values of Financial Instruments
The following sets forth a comparison of the carrying amounts and fair values of our financial instruments:
December 31,December 31,
2016 20152017 2016
Carrying
Amount
 Fair Value 
Carrying
Amount
 Fair Value
Carrying
Amount
 Fair Value 
Carrying
Amount
 Fair Value
(Dollars in thousands)(Dollars in thousands)
Assets              
Fixed maturity securities:              
Available for sale$41,060,494
 $41,060,494
 $36,421,839
 $36,421,839
$45,372,989
 $45,372,989
 $41,060,494
 $41,060,494
Held for investment76,825
 68,766
 76,622
 65,377
77,041
 76,460
 76,825
 68,766
Mortgage loans on real estate2,480,956
 2,522,035
 2,435,257
 2,471,864
2,665,531
��2,670,037
 2,480,956
 2,522,035
Derivative instruments830,519
 830,519
 337,256
 337,256
1,568,380
 1,568,380
 830,519
 830,519
Other investments308,774
 300,918
 292,872
 297,903
616,764
 605,894
 308,774
 300,918
Cash and cash equivalents791,266
 791,266
 397,749
 397,749
1,434,045
 1,434,045
 791,266
 791,266
Coinsurance deposits4,639,492
 4,150,792
 3,187,470
 2,860,882
4,858,289
 4,347,990
 4,639,492
 4,150,792
Interest rate caps1,082
 1,082
 1,410
 1,410
415
 415
 1,082
 1,082
Counterparty collateral145,693
 145,693
 82,312
 82,312
186,108
 186,108
 145,693
 145,693
              
Liabilities              
Policy benefit reserves51,280,331
 43,104,183
 45,151,460
 38,435,515
55,786,011
 46,344,931
 51,280,331
 43,104,183
Single premium immediate annuity (SPIA) benefit reserves297,724
 308,028
 324,264
 336,066
282,563
 292,153
 297,724
 308,028
Notes and loan payable493,755
 519,440
 393,227
 417,752
494,093
 521,800
 493,755
 519,440
Subordinated debentures241,853
 225,106
 241,452
 216,933
242,565
 244,117
 241,853
 225,106
Interest rate swap2,113
 2,113
 3,139
 3,139
789
 789
 2,113
 2,113
Fair value is the price that would be received to sell an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants at the measurement date. The objective of a fair value measurement is to determine that price for each financial instrument at each measurement date. We meet this objective using various methods of valuation that include market, income and cost approaches.
We categorize our financial instruments into three levels of fair value hierarchy based on the priority of inputs used in determining fair value. The hierarchy defines the highest priority inputs (Level 1) as quoted prices in active markets for identical assets or liabilities. The lowest priority inputs (Level 3) are our own assumptions about what a market participant would use in determining fair value such as estimated future cash flows. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, a financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the financial instrument. We categorize financial assets and liabilities recorded at fair value in the consolidated balance sheets as follows:
Level 1—Quoted prices are available in active markets for identical financial instruments as of the reporting date. We do not adjust the quoted price for these financial instruments, even in situations where we hold a large position and a sale could reasonably impact the quoted price.
Level 2—Quoted prices in active markets for similar financial instruments, quoted prices for identical or similar financial instruments in markets that are not active; and models and other valuation methodologies using inputs other than quoted prices that are observable.
Level 3—Models and other valuation methodologies using significant inputs that are unobservable for financial instruments and include situations where there is little, if any, market activity for the financial instrument. The inputs into the determination of fair value require significant management judgment or estimation. Financial instruments that are included in Level 3 are securities for which no market activity or data exists and for which we used discounted expected future cash flows with our own assumptions about what a market participant would use in determining fair value.
Transfers of securities among the levels occur at times and depend on the type of inputs used to determine fair value of each security. There were no transfers between levels during any period presented.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Our assets and liabilities which are measured at fair value on a recurring basis as of December 31, 20162017 and 20152016 are presented below based on the fair value hierarchy levels:
Total
Fair Value
 
Quoted
Prices
in Active
Markets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Total
Fair Value
 
Quoted
Prices
in Active
Markets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
(Dollars in thousands)
December 31, 2017       
Assets       
Fixed maturity securities:       
Available for sale:       
United States Government full faith and credit$11,876
 $5,640
 $6,236
 $
United States Government sponsored agencies1,305,017
 
 1,305,017
 
United States municipalities, states and territories4,166,812
 
 4,166,812
 
Foreign government obligations239,360
 
 239,360
 
Corporate securities29,878,971
 5
 29,878,966
 
Residential mortgage backed securities1,105,567
 
 1,105,567
 
Commercial mortgage backed securities5,544,850
 
 5,544,850
 
Other asset backed securities3,120,536
 
 3,120,536
 
Other investments: equity securities, available for sale292,429
 285,000
 7,429
 
Derivative instruments1,568,380
 
 1,568,380
 
Cash and cash equivalents1,434,045
 1,434,045
 
 
Interest rate caps415
 
 415
 
Counterparty collateral186,108
 
 186,108
 
$48,854,366
 $1,724,690
 $47,129,676
 $
Liabilities       
Interest rate swap$789
 $
 $789
 $
Fixed index annuities - embedded derivatives, net8,790,427
 
 
 8,790,427
(Dollars in thousands)$8,791,216
 $
 $789
 $8,790,427
December 31, 2016              
Assets              
Fixed maturity securities:              
Available for sale:              
United States Government full faith and credit$11,805
 $5,381
 $6,424
 $
$11,805
 $5,381
 $6,424
 $
United States Government sponsored agencies1,344,787
 
 1,344,787
 
1,344,787
 
 1,344,787
 
United States municipalities, states and territories3,926,950
 
 3,926,950
 
3,926,950
 
 3,926,950
 
Foreign government obligations232,233
 
 232,233
 
236,341
 
 236,341
 
Corporate securities27,118,526
 6
 27,118,520
 
27,114,418
 6
 27,114,412
 
Residential mortgage backed securities1,254,835
 
 1,254,835
 
1,254,835
 
 1,254,835
 
Commercial mortgage backed securities5,365,235
 
 5,365,235
 
5,365,235
 
 5,365,235
 
Other asset backed securities1,806,123
 
 1,806,123
 
1,806,123
 
 1,806,123
 
Other investments: equity securities, available for sale8,000
 
 8,000
 
8,000
 
 8,000
 
Derivative instruments830,519
 
 830,519
 
830,519
 
 830,519
 
Cash and cash equivalents791,266
 791,266
 
 
791,266
 791,266
 
 
Interest rate caps1,082
 
 1,082
 
1,082
 
 1,082
 
Counterparty collateral145,693
 
 145,693
 
145,693
 
 145,693
 
$42,837,054
 $796,653
 $42,040,401
 $
$42,837,054
 $796,653
 $42,040,401
 $
Liabilities              
Interest rate swap$2,113
 $
 $2,113
 $
$2,113
 $
 $2,113
 $
Fixed index annuities—embedded derivatives6,563,288
 
 
 6,563,288
Fixed index annuities - embedded derivatives6,563,288
 
 
 6,563,288
$6,565,401
 $
 $2,113
 $6,563,288
$6,565,401
 $
 $2,113
 $6,563,288
December 31, 2015       
Assets       
Fixed maturity securities:       
Available for sale:       
United States Government full faith and credit$471,256
 $438,598
 $32,658
 $
United States Government sponsored agencies1,398,611
 
 1,398,611
 
United States municipalities, states and territories3,755,367
 
 3,755,367
 
Foreign government obligations212,565
 
 212,565
 
Corporate securities23,802,394
 121
 23,802,273
 
Residential mortgage backed securities1,462,072
 
 1,462,072
 
Commercial mortgage backed securities4,174,396
 
 4,174,396
 
Other asset backed securities1,145,178
 
 1,145,178
 
Other investments: equity securities, available for sale7,828
 
 7,828
 
Derivative instruments337,256
 
 337,256
 
Cash and cash equivalents397,749
 397,749
 
 
Interest rate caps1,410
 
 1,410
 
Counterparty collateral82,312
 
 82,312
 
$37,248,394
 $836,468
 $36,411,926
 $
Liabilities       
Interest rate swap$3,139
 $
 $3,139
 $
Fixed index annuities—embedded derivatives5,983,622
 
 
 5,983,622
$5,986,761
 $
 $3,139
 $5,983,622

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The following methods and assumptions were used in estimating the fair values of financial instruments during the periods presented in these consolidated financial statements.
Fixed maturity securities and equity securities
The fair values of fixed maturity securities and equity securities in an active and orderly market are determined by utilizing independent pricing services. The independent pricing services incorporate a variety of observable market data in their valuation techniques, including:
reported trading prices,
benchmark yields,
broker-dealer quotes,
benchmark securities,
bids and offers,
credit ratings,
relative credit information, and
other reference data.
The independent pricing services also take into account perceived market movements and sector news, as well as a security's terms and conditions, including any features specific to that issue that may influence risk and marketability. Depending on the security, the priority of the use of observable market inputs may change as some observable market inputs may not be relevant or additional inputs may be necessary.
The independent pricing services provide quoted market prices when available. Quoted prices are not always available due to market inactivity. When quoted market prices are not available, the third parties use yield data and other factors relating to instruments or securities with similar characteristics to determine fair value for securities that are not actively traded. We generally obtain one value from our primary external pricing service. In situations where a price is not available from this service, we may obtain further quotes or prices from additional parties as needed. In addition, for our callable United States Government sponsored agencies we obtain multiple broker quotes and take the average of the broker prices received. Market indices of similar rated asset class spreads are considered for valuations and broker indications of similar securities are compared. Inputs used by the broker include market information, such as yield data and other factors relating to instruments or securities with similar characteristics. Valuations and quotes obtained from third party commercial pricing services are non-binding and do not represent quotes on which one may execute the disposition of the assets.
We validate external valuations at least quarterly through a combination of procedures that include the evaluation of methodologies used by the pricing services, analytical reviews and performance analysis of the prices against trends, and maintenance of a securities watch list. Additionally, as needed we utilize discounted cash flow models or perform independent valuations on a case-by-case basis using inputs and assumptions similar to those used by the pricing services. Although we do identify differences from time to time as a result of these validation procedures, we did not make any significant adjustments as of December 31, 20162017 and 2015.2016.
Mortgage loans on real estate
Mortgage loans on real estate are not measured at fair value on a recurring basis. The fair values of mortgage loans on real estate are calculated using discounted expected cash flows using current competitive market interest rates currently being offered for similar loans. The fair values of impaired mortgage loans on real estate that we have considered to be collateral dependent are based on the fair value of the real estate collateral (based on appraised values) less estimated costs to sell. The inputs utilized to determine fair value of all mortgage loans are unobservable market data (competitive market interest rates); therefore, fair value of mortgage loans falls into Level 3 in the fair value hierarchy.
Derivative instruments
The fair values of derivative instruments, primarily call options, are based upon the amount of cash that we will receive to settle each derivative instrument on the reporting date. These amounts are determined by our investment team using industry accepted valuation models and are adjusted for the nonperformance risk of each counterparty net of any collateral held. Inputs include market volatility and risk free interest rates and are used in income valuation techniques in arriving at a fair value for each option contract. The nonperformance risk for each counterparty is based upon its credit default swap rate. We have no performance obligations related to the call options purchased to fund our fixed index annuity policy liabilities.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Other investments
Available for sale equity securities are the only financial instruments included in other investments that are measured at fair value on a recurring basis (see determination of fair value above). Financial instruments included in other investments that are not measured at fair value on a recurring basesbasis are policy loans, equity method investments and company owned life insurance (COLI). We have not attempted to determine the fair values associated with our policy loans, as we believe any differences between carrying value and the fair values afforded these instruments are immaterial to our consolidated financial position and, accordingly, the cost to provide such disclosure does not justify the benefit to be derived. The fair valuevalues of our equity method investments qualify as Level 3 fair valuesare obtained from third parties and wereare determined by calculating the present value of future cash flows discounted by a risk free rate, a risk spread and a liquidity discount. TheAs the risk spread and liquidity discount are rates determined by our investment professionals and are unobservable market inputs.inputs, the fair value of our equity method investments falls within Level 3 of the fair value hierarchy. The fair value of our COLI approximates the cash surrender value of the policies and whose fair values fallfalls within Level 2 of the fair value hierarchy.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Cash and cash equivalents
Amounts reported in the consolidated balance sheets for these instruments are reported at their historical cost which approximates fair value due to the nature of the assets assigned to this category.
Interest rate swap and caps
The fair values of our pay fixed/receive variable interest rate swap and our interest rate caps are obtained from third parties and are determined by discounting expected future cash flows using projected LIBOR rates for the term of the swap and caps.
Counterparty collateral
Amounts reported in other assets ofin the consolidated balance sheets for these instruments are reported at their historical cost which approximates fair value due to the nature of the assets assigned to this category.
Policy benefit reserves, coinsurance deposits and SPIA benefit reserves
The fair values of the liabilities under contracts not involving significant mortality or morbidity risks (principally deferred annuities), are stated at the cost we would incur to extinguish the liability (i.e., the cash surrender value) as these contracts are generally issued without an annuitization date. The coinsurance deposits related to the annuity benefit reserves have fair values determined in a similar fashion. For period-certain annuity benefit contracts, the fair value is determined by discounting the benefits at the interest rates currently in effect for newly issued immediate annuity contracts. We are not required to and have not estimated the fair value of the liabilities under contracts that involve significant mortality or morbidity risks, as these liabilities fall within the definition of insurance contracts that are exceptions from financial instruments that require disclosures of fair value. Policy benefit reserves, coinsurance deposits and SPIA benefit reserves are not measured at fair value on a recurring basis. All of the fair values presented within these categories fall within Level 3 of the fair value hierarchy as most of the inputs are unobservable market data.
Notes and loan payable
The fair values of our senior unsecured notes are based upon pricing matrices developed by a third party pricing service when quoted market prices are not available and are categorized as Level 2 within the fair value hierarchy. The fair value of our term loan is estimated using discounted cash flow calculations based principally on observable inputs including our incremental borrowing rate, which reflects our credit rating, for a similar type of borrowing with a maturity consistent with that remaining for the term loan. Notes and loan payable are not remeasured at fair value on a recurring basis.
Subordinated debentures
Fair values for subordinated debentures are estimated using discounted cash flow calculations based principally on observable inputs including our incremental borrowing rates, which reflect our credit rating, for similar types of borrowings with maturities consistent with those remaining for the debt being valued. These fair values are categorized as Level 2 within the fair value hierarchy. Subordinated debentures are not measured at fair value on a recurring basis.
Fixed index annuities - embedded derivatives
We estimate the fair value of the embedded derivative component of our fixed index annuity policy benefit reserves at each valuation date by (i) projecting policy contract values and minimum guaranteed contract values over the expected lives of the contracts and (ii) discounting the excess of the projected contract value amounts at the applicable risk free interest rates adjusted for our nonperformance risk related to those liabilities. The projections of policy contract values are based on our best estimate assumptions for future policy growth and future policy decrements. Our best estimate assumptions for future policy growth include assumptions for the expected index credit on the next policy anniversary date which are derived from the fair values of the underlying call options purchased to fund such index credits and the expected costs of annual call options we will purchase in the future to fund index credits beyond the next policy anniversary. The projections of minimum guaranteed contract values include the same best estimate assumptions for policy decrements as were used to project policy contract values.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Within this determination we have the following significant unobservable inputs: 1) the expected cost of annual call options we will purchase in the future to fund index credits beyond the next policy anniversary and 2) our best estimates for future policy decrements, primarily lapse, partial withdrawal and mortality rates. As of December 31, 20162017 and 2015,2016, we utilized an estimate of 3.10% for the expected cost of annual call options, which are based on estimated long-term account value growth and a historical review of our actual option costs.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Our best estimate assumptions for lapse, partial withdrawal and mortality rates are based on our actual experience and our outlook as to future expectations for such assumptions. These assumptions, which are consistent with the assumptions used in calculating deferred policy acquisition costs and deferred sales inducements, are reviewed on a quarterly basis and are revised as our experience develops and/or as future expectations change. Our mortality rate assumptions are based on 65% of the 1983 Basic Annuity Mortality Tables. The following table presents average lapse rate and partial withdrawal rate assumptions, by contract duration, used in estimating the fair value of the embedded derivative component of our fixed index annuity policy benefit reserves at each reporting date:
 Average Lapse Rates Average Partial Withdrawal Rates Average Lapse Rates Average Partial Withdrawal Rates
Contract Duration (Years) December 31, 2016 December 31, 2015 December 31, 2016 December 31, 2015 December 31, 2017 December 31, 2016 December 31, 2017 December 31, 2016
1 - 5 1.76% 1.58% 3.30% 3.08% 1.83% 1.76% 3.32% 3.30%
6 - 10 6.58% 8.55% 3.30% 3.55% 7.01% 6.58% 3.32% 3.30%
11 - 15 11.25% 12.01% 3.32% 3.59% 11.31% 11.25% 3.34% 3.32%
16 - 20 12.04% 12.99% 3.18% 3.22% 11.96% 12.04% 3.20% 3.18%
20+ 11.68% 12.54% 3.18% 3.22% 11.62% 11.68% 3.20% 3.18%
Lapse rates are generally expected to increase as surrender charge percentages decrease. Lapse expectations reflect a significant increase in the year in which the surrender charge period on a contract ends.
The following table provides a reconciliation of the beginning and ending balances for our Level 3 liabilities, which are measured at fair value on a recurring basis using significant unobservable inputs for the years ended December 31, 20162017 and 20152016:
Year Ended December 31,Year Ended December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Fixed index annuities—embedded derivatives   
Fixed index annuities - embedded derivatives   
Beginning balance$5,983,622
 $5,574,653
$6,563,288
 $5,983,622
Premiums less benefits434,621
 1,234,637
2,052,985
 434,621
Change in fair value, net145,045
 (825,668)174,154
 145,045
Ending balance$6,563,288
 $5,983,622
$8,790,427
 $6,563,288
The fair value of our fixed index annuities embedded derivatives is net of coinsurance ceded of $539.7 million and $398.1 million as of December 31, 2017 and 2016, respectively. Change in fair value, net for each period in our embedded derivatives are included in change in fair value of embedded derivatives in the consolidated statements of operations.
Certain derivatives embedded in our fixed index annuity contracts are our most significant financial instrument measured at fair value that are categorized as Level 3 in the fair value hierarchy. The contractual obligations for future annual index credits within our fixed index annuity contracts are treated as a "series of embedded derivatives" over the expected life of the applicable contracts. We estimate the fair value of these embedded derivatives at each valuation date by the method described above under fixed index annuities - embedded derivatives. The projections of minimum guaranteed contract values include the same best estimate assumptions for policy decrements as were used to project policy contract values.
The most sensitive assumption in determining policy liabilities for fixed index annuities is the rates used to discount the excess projected contract values. As indicated above, the discount rate reflects our nonperformance risk. If the discount rates used to discount the excess projected contract values at December 31, 2016,2017, were to increase by 100 basis points, the fair value of the embedded derivatives would decrease by $451.4$579.5 million recorded through operations as a decrease in the change in fair value of embedded derivatives and there would be a corresponding decrease of $276.4$339.4 million to our combined balance for deferred policy acquisition costs and deferred sales inducements recorded through operations as an increase in amortization of deferred policy acquisition costs and deferred sales inducements. A decrease by 100 basis points in the discount rate used to discount the excess projected contract values would increase the fair value of the embedded derivatives by $504.5$645.8 million recorded through operations as an increase in the change in fair value of embedded derivatives and there would be a corresponding increase of $299.5$374.8 million to our combined balance for deferred policy acquisition costs and deferred sales inducements recorded through operations as a decrease in amortization of deferred policy acquisition costs and deferred sales inducements.

F-17

Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


3.     Investments
At December 31, 20162017 and 2015,2016, the amortized cost and fair value of fixed maturity securities were as follows:
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 Fair Value
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 Fair Value
(Dollars in thousands)
December 31, 2017       
Fixed maturity securities:       
Available for sale:       
United States Government full faith and credit$11,861
 $162
 $(147) $11,876
United States Government sponsored agencies1,308,290
 28,457
 (31,730) 1,305,017
United States municipalities, states and territories3,804,360
 366,048
 (3,596) 4,166,812
Foreign government obligations228,214
 13,171
 (2,025) 239,360
Corporate securities28,127,653
 1,897,005
 (145,687) 29,878,971
Residential mortgage backed securities1,028,484
 79,554
 (2,471) 1,105,567
Commercial mortgage backed securities5,531,922
 82,768
 (69,840) 5,544,850
Other asset backed securities3,075,975
 57,966
 (13,405) 3,120,536
$43,116,759
 $2,525,131
 $(268,901) $45,372,989
Held for investment:       
Corporate security$77,041
 $
 $(581) $76,460


 

 

 

Other investments: equity securities, available for sale$292,429
 $
 $
 $292,429
(Dollars in thousands)       
December 31, 2016              
Fixed maturity securities:              
Available for sale:              
United States Government full faith and credit$11,864
 $229
 $(288) $11,805
$11,864
 $229
 $(288) $11,805
United States Government sponsored agencies1,368,340
 23,360
 (46,913) 1,344,787
1,368,340
 23,360
 (46,913) 1,344,787
United States municipalities, states and territories3,626,395
 322,948
 (22,393) 3,926,950
3,626,395
 322,948
 (22,393) 3,926,950
Foreign government obligations224,588
 12,725
 (5,080) 232,233
229,589
 11,832
 (5,080) 236,341
Corporate securities26,338,214
 1,149,085
 (368,773) 27,118,526
26,333,213
 1,149,978
 (368,773) 27,114,418
Residential mortgage backed securities1,166,944
 91,445
 (3,554) 1,254,835
1,166,944
 91,445
 (3,554) 1,254,835
Commercial mortgage backed securities5,422,255
 59,994
 (117,014) 5,365,235
5,422,255
 59,994
 (117,014) 5,365,235
Other asset backed securities1,795,355
 31,471
 (20,703) 1,806,123
1,795,355
 31,471
 (20,703) 1,806,123
$39,953,955
 $1,691,257
 $(584,718) $41,060,494
$39,953,955
 $1,691,257
 $(584,718) $41,060,494
Held for investment:              
Corporate security$76,825
 $
 $(8,059) $68,766
$76,825
 $
 $(8,059) $68,766


 

 

 



 

 

 

Other investments - equity securities, available for sale:       
Finance, insurance and real estate$7,521
 $479
 $
 $8,000
       
December 31, 2015       
Fixed maturity securities:       
Available for sale:       
United States Government full faith and credit$470,567
 $988
 $(299) $471,256
United States Government sponsored agencies1,386,219
 26,801
 (14,409) 1,398,611
United States municipalities, states and territories3,422,667
 341,328
 (8,628) 3,755,367
Foreign government obligations210,953
 12,547
 (10,935) 212,565
Corporate securities23,597,530
 887,288
 (682,424) 23,802,394
Residential mortgage backed securities1,366,985
 98,576
 (3,489) 1,462,072
Commercial mortgage backed securities4,238,265
 41,412
 (105,281) 4,174,396
Other asset backed securities1,130,524
 34,534
 (19,880) 1,145,178
$35,823,710
 $1,443,474
 $(845,345) $36,421,839
Held for investment:       
Corporate security$76,622
 $
 $(11,245) $65,377


 

 

 

Other investments - equity securities, available for sale:       
Finance, insurance and real estate$7,515
 $313
 $
 $7,828
Other investments: equity securities, available for sale$7,521
 $479
 $
 $8,000
At December 31, 2016, 35%2017, 37% of our fixed income securities have call features, of which 0.1%2.7% ($55.7 million)1.2 billion) were subject to call redemption and another 3.1%0.2% ($1.3 billion)90.1 million) will become subject to call redemption during 2017.2018. Approximately 70%73% of our fixed income securities that have call features are not callable until within six months of their stated maturities.

F-18

Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The amortized cost and fair value of fixed maturity securities at December 31, 2016,2017, by contractual maturity are shown below. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. All of our mortgage and other asset backed securities provide for periodic payments throughout their lives and are shown below as separate lines.
Available for sale Held for investmentAvailable for sale Held for investment
Amortized
Cost
 Fair Value 
Amortized
Cost
 Fair Value
Amortized
Cost
 Fair Value 
Amortized
Cost
 Fair Value
(Dollars in thousands)(Dollars in thousands)
Due in one year or less$236,707
 $241,934
 $
 $
$197,449
 $201,079
 $
 $
Due after one year through five years2,824,776
 2,979,768
 
 
4,958,029
 5,114,727
 
 
Due after five years through ten years11,659,762
 11,738,156
 
 
10,556,868
 10,827,764
 
 
Due after ten years through twenty years8,792,470
 9,284,726
 
 
9,214,395
 10,080,377
 
 
Due after twenty years8,055,686
 8,389,717
 76,825
 68,766
8,553,637
 9,378,089
 77,041
 76,460
31,569,401
 32,634,301
 76,825
 68,766
33,480,378
 35,602,036
 77,041
 76,460
Residential mortgage backed securities1,166,944
 1,254,835
 
 
1,028,484
 1,105,567
 
 
Commercial mortgage backed securities5,422,255
 5,365,235
 
 
5,531,922
 5,544,850
 
 
Other asset backed securities1,795,355
 1,806,123
 
 
3,075,975
 3,120,536
 
 
$39,953,955
 $41,060,494
 $76,825
 $68,766
$43,116,759
 $45,372,989
 $77,041
 $76,460
Net unrealized gains on available for sale fixed maturity securities and equity securities reported as a separate component of stockholders' equity were comprised of the following:
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Net unrealized gains on available for sale fixed maturity securities and equity securities$1,107,018
 $598,442
$2,256,230
 $1,107,018
Adjustments for assumed changes in amortization of deferred policy acquisition costs and deferred sales inducements(618,661) (322,859)(1,206,078) (618,661)
Deferred income tax valuation allowance reversal22,534
 22,534
22,534
 22,534
Deferred income tax expense(a)(170,925) (96,454)(348,087) (170,925)
Net unrealized gains reported as accumulated other comprehensive income$339,966
 $201,663
$724,599
 $339,966
(a)Includes $128 million related to the impact of Tax Reform that we expect to reclassify between accumulated other comprehensive income and retained earnings within our consolidated balance sheet during the first quarter of 2018. For more information regarding the timing of reclassification, see Note 1 to our audited consolidated financial statements.
The National Association of Insurance Commissioners ("NAIC") assigns designations to fixed maturity securities. These designations range from Class 1 (highest quality) to Class 6 (lowest quality). In general, securities are assigned a designation based upon the ratings they are given by the Nationally Recognized Statistical Rating Organizations ("NRSRO's"). The NAIC designations are utilized by insurers in preparing their annual statutory statements. NAIC Class 1 and 2 designations are considered "investment grade" while NAIC Class 3 through 6 designations are considered "non-investment grade." Based on the NAIC designations, we had 97% and 98% of our fixed maturity portfolio rated investment grade at both December 31, 20162017 and 2015,2016, respectively.
The following table summarizes the credit quality, as determined by NAIC designation, of our fixed maturity portfolio as of the dates indicated:
 December 31, December 31,
 2016 2015 2017 2016
NAIC
Designation
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
 (Dollars in thousands) (Dollars in thousands)
1 $25,607,268
 $26,507,798
 $23,363,259
 $24,207,801
 $26,669,427
 $28,274,379
 $25,607,268
 $26,507,798
2 13,037,592
 13,295,648
 11,709,730
 11,589,325
 15,198,551
 15,869,219
 13,037,592
 13,295,648
3 1,201,059
 1,155,702
 758,531
 643,293
 1,161,737
 1,157,420
 1,201,059
 1,155,702
4 154,226
 137,188
 60,480
 44,312
 134,838
 117,542
 154,226
 137,188
5 17,475
 24,664
 
 
 17,015
 20,927
 17,475
 24,664
6 13,160
 8,260
 8,332
 2,485
 12,232
 9,962
 13,160
 8,260
 $40,030,780
 $41,129,260
 $35,900,332
 $36,487,216
 $43,193,800
 $45,449,449
 $40,030,780
 $41,129,260

F-19

Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The following table shows our investments' gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities (consisting of 1,514955 and 1,2461,514 securities, respectively) have been in a continuous unrealized loss position, at December 31, 20162017 and 2015:2016:
Less than 12 months 12 months or more TotalLess than 12 months 12 months or more Total
Fair Value 
Unrealized
Losses
 Fair Value 
Unrealized
Losses
 Fair Value 
Unrealized
Losses
Fair Value 
Unrealized
Losses
 Fair Value 
Unrealized
Losses
 Fair Value 
Unrealized
Losses
(Dollars in thousands)
December 31, 2017           
Fixed maturity securities:           
Available for sale:           
United States Government full faith and credit$1,565
 $(10) $6,731
 $(137) $8,296
 $(147)
United States Government sponsored agencies44,794
 (180) 958,965
 (31,550) 1,003,759
 (31,730)
United States municipalities, states and territories44,736
 (128) 128,499
 (3,468) 173,235
 (3,596)
Foreign government obligations49,663
 (337) 12,625
 (1,688) 62,288
 (2,025)
Corporate securities:           
Finance, insurance and real estate456,244
 (5,135) 600,655
 (28,043) 1,056,899
 (33,178)
Manufacturing, construction and mining222,985
 (3,475) 231,196
 (10,849) 454,181
 (14,324)
Utilities and related sectors395,183
 (4,099) 249,416
 (8,901) 644,599
 (13,000)
Wholesale/retail trade152,941
 (1,249) 178,635
 (11,371) 331,576
 (12,620)
Services, media and other729,124
 (19,000) 891,654
 (53,565) 1,620,778
 (72,565)
Residential mortgage backed securities39,771
 (387) 32,917
 (2,084) 72,688
 (2,471)
Commercial mortgage backed securities1,096,757
 (10,385) 1,306,437
 (59,455) 2,403,194
 (69,840)
Other asset backed securities765,531
 (3,499) 217,595
 (9,906) 983,126
 (13,405)
$3,999,294
 $(47,884) $4,815,325
 $(221,017) $8,814,619
 $(268,901)
Held for investment:           
Corporate security:           
Insurance$
 $
 $76,460
 $(581) $76,460
 $(581)
(Dollars in thousands)           
December 31, 2016                      
Fixed maturity securities:                      
Available for sale:                      
United States Government full faith and credit$7,405
 $(288) $
 $
 $7,405
 $(288)$7,405
 $(288) $
 $
 $7,405
 $(288)
United States Government sponsored agencies995,548
 (46,913) 
 
 995,548
 (46,913)995,548
 (46,913) 
 
 995,548
 (46,913)
United States municipalities, states and territories463,409
 (22,393) 
 
 463,409
 (22,393)463,409
 (22,393) 
 
 463,409
 (22,393)
Foreign government obligations29,158
 (913) 20,388
 (4,167) 49,546
 (5,080)29,158
 (913) 20,388
 (4,167) 49,546
 (5,080)
Corporate securities:                      
Finance, insurance and real estate2,302,103
 (79,077) 110,730
 (9,834) 2,412,833
 (88,911)1,940,107
 (70,421) 82,907
 (7,723) 2,023,014
 (78,144)
Manufacturing, construction and mining2,556,147
 (74,144) 702,978
 (74,382) 3,259,125
 (148,526)1,199,420
 (34,304) 311,591
 (23,273) 1,511,011
 (57,577)
Utilities and related sectors1,605,742
 (53,055) 196,085
 (16,208) 1,801,827
 (69,263)1,401,650
 (45,015) 58,597
 (5,820) 1,460,247
 (50,835)
Wholesale/retail trade396,310
 (9,433) 57,708
 (5,739) 454,018
 (15,172)637,121
 (18,880) 29,719
 (1,930) 666,840
 (20,810)
Services, media and other857,515
 (35,107) 132,170
 (11,794) 989,685
 (46,901)2,539,519
 (82,196) 716,857
 (79,211) 3,256,376
 (161,407)
Residential mortgage backed securities81,762
 (3,463) 1,853
 (91) 83,615
 (3,554)81,762
 (3,463) 1,853
 (91) 83,615
 (3,554)
Commercial mortgage backed securities3,148,395
 (116,938) 895
 (76) 3,149,290
 (117,014)3,148,395
 (116,938) 895
 (76) 3,149,290
 (117,014)
Other asset backed securities751,533
 (12,289) 146,167
 (8,414) 897,700
 (20,703)751,533
 (12,289) 146,167
 (8,414) 897,700
 (20,703)
$13,195,027
 $(454,013) $1,368,974
 $(130,705) $14,564,001
 $(584,718)$13,195,027
 $(454,013) $1,368,974
 $(130,705) $14,564,001
 $(584,718)
Held for investment:                      
Corporate security:                      
Insurance$
 $
 $68,766
 $(8,059) $68,766
 $(8,059)$
 $
 $68,766
 $(8,059) $68,766
 $(8,059)
           
December 31, 2015           
Fixed maturity securities:           
Available for sale:           
United States Government full faith and credit$37,730
 $(299) $
 $
 $37,730
 $(299)
United States Government sponsored agencies957,053
 (14,409) 
 
 957,053
 (14,409)
United States municipalities, states and territories261,823
 (8,474) 2,846
 (154) 264,669
 (8,628)
Foreign government obligations42,966
 (1,762) 15,463
 (9,173) 58,429
 (10,935)
Corporate securities:           
Finance, insurance and real estate2,077,223
 (59,607) 49,912
 (14,855) 2,127,135
 (74,462)
Manufacturing, construction and mining3,517,967
 (246,456) 376,229
 (131,003) 3,894,196
 (377,459)
Utilities and related sectors2,240,652
 (138,940) 97,184
 (22,565) 2,337,836
 (161,505)
Wholesale/retail trade473,050
 (17,863) 38,682
 (8,125) 511,732
 (25,988)
Services, media and other1,037,011
 (39,937) 32,050
 (3,073) 1,069,061
 (43,010)
Residential mortgage backed securities162,770
 (2,958) 6,438
 (531) 169,208
 (3,489)
Commercial mortgage backed securities2,679,510
 (105,002) 11,495
 (279) 2,691,005
 (105,281)
Other asset backed securities457,055
 (10,581) 46,657
 (9,299) 503,712
 (19,880)
$13,944,810
 $(646,288) $676,956
 $(199,057) $14,621,766
 $(845,345)
Held for investment:           
Corporate security:           
Insurance$65,377
 $(11,245) $
 $
 $65,377
 $(11,245)
Based on the results of our process for evaluating available for sale securities in unrealized loss positions for other-than-temporary-impairments, which is discussed in detail later in this footnote, we have determined that the unrealized losses on the securities in the preceding table are temporary. The unrealized losses at December 31, 20162017 are principally related to timing of the purchases of these securities, which carry less yield than those available at December 31, 2016.2017.

F-20

Table of Contents
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The commodity related sectors had most of the gross unrealized losses in our corporate fixed income securities portfolio as of December 31, 2016. Commodity prices, specifically oil, gasApproximately 83% and base metals,declined significantly in late 2015, but prices have risen in 2016 to levels that appear sustainable and should support prices and NRSRO ratings longer term. The value of oil has been significantly depressed as the amount of supply from new production has exceeded demand. In addition, iron ore and other key industrial metals have depressed prices as investors perceive the economic slowdown in Asia Pacific will curb demand as supply remains high. The companies in the metal and mining sectors experienced the largest decline in values of their debt in late 2015. In the above table, oil and metals and mining exposure is reflected within the foreign government; manufacturing, construction and mining; and utilities and related sectors. Within these sectors, we continue to monitor the impact to our investment portfolio for those companies that may be adversely affected, both directly and indirectly. Even though the energy holdings and a majority of the metals and mining holdings have seen significant improvements in values as oil and iron ore prices have increased, they could continue to see price volatility and possible downgrades in credit ratings. If oil and commodity prices fall lower and remain at depressed levels for an extended period of time or decline further, certain issuers and investments may come under further stress. At this time, we believe the unrealized losses are temporary due to the fact that the price decline is driven by an over-supply of oil in the energy sector, which we feel is unsustainable long term. Our exposure is in companies that we believe have more financial flexibility and significant operational scale to manage through the downturn. In addition, price declines in the metal and mining sector have been heavily influenced by excess production and softer demand. Companies in the mining sector are more susceptible to rating downgrades and we believe companies will be under continued financial strain at the current commodity price structure. We believe company issuers in our portfolio will be able to meet their debt service obligations.
Approximately 86% and 84% of the unrealized losses on fixed maturity securities shown in the above table for December 31, 20162017 and 2015,2016, respectively, are on securities that are rated investment grade, defined as being the highest two NAIC designations. All of the fixed maturity securities with unrealized losses are current with respect to the payment of principal and interest.
Changes in net unrealized gains on investments for the years ended December 31, 2017, 2016 2015 and 20142015 are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Fixed maturity securities held for investment carried at amortized cost$3,186
 $(10,651) $14,821
$7,478
 $3,186
 $(10,651)
Investments carried at fair value:          
Fixed maturity securities, available for sale$508,410
 $(1,642,027) $2,157,439
$1,149,691
 $508,410
 $(1,642,027)
Equity securities, available for sale166
 17
 21
(479) 166
 17
508,576
 (1,642,010) 2,157,460
1,149,212
 508,576
 (1,642,010)
Adjustment for effect on other balance sheet accounts:          
Deferred policy acquisition costs and deferred sales inducements(295,802) 842,412
 (1,118,683)(587,417) (295,802) 842,412
Deferred income tax asset/liability(74,471) 279,860
 (363,572)(177,162) (74,471) 279,860
(370,273) 1,122,272
 (1,482,255)(764,579) (370,273) 1,122,272
Change in net unrealized gains on investments carried at fair value$138,303
 $(519,738) $675,205
$384,633
 $138,303
 $(519,738)
Components of net investment income are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Fixed maturity securities$1,729,176
 $1,566,409
 $1,394,301
$1,876,542
 $1,729,176
 $1,566,409
Equity securities531
 441
 404
764
 531
 441
Mortgage loans on real estate122,985
 131,892
 143,998
122,680
 122,985
 131,892
Cash and cash equivalents3,201
 601
 286
2,562
 3,201
 601
Other5,499
 4,858
 6,903
4,073
 5,499
 4,858
1,861,392
 1,704,201
 1,545,892
2,006,621
 1,861,392
 1,704,201
Less investment expenses(11,520) (12,009) (14,225)(14,624) (11,520) (12,009)
Net investment income$1,849,872
 $1,692,192
 $1,531,667
$1,991,997
 $1,849,872
 $1,692,192
Proceeds from sales of available for sale securities for the years ended December 31, 2017, 2016 and 2015 and 2014 were $0.7 billion, $1.0 billion $0.4 billion and $0.2$0.4 billion, respectively. Scheduled principal repayments, calls and tenders for available for sale fixed maturity securities for the years ended December 31, 2017, 2016 and 2015 and 2014 were $1.2 billion, $1.7 billion $1.2 billion and $1.3$1.2 billion, respectively.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Realized gains and losses on sales are determined on the basis of specific identification of investments based on the trade date. Net realized gains (losses) on investments, excluding net OTTI losses are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Available for sale fixed maturity securities:          
Gross realized gains$14,132
 $7,230
 $3,273
$18,254
 $14,132
 $7,230
Gross realized losses(4,036) (5,787) (1,006)(9,058) (4,036) (5,787)
9,196
 10,096
 1,443
Available for sale equity securities:     
Gross realized gains348
 
 
10,096
 1,443
 2,267
     
Other investments:          
Gain on sale of real estate884
 4,194
 2,454
56
 884
 4,194
Loss on sale of real estate(93) (575) (231)
 (93) (575)
Impairment losses on real estate
 (1,297) (2,441)
 
 (1,297)
791
 2,322
 (218)56
 791
 2,322
Mortgage loans on real estate:          
Decrease (increase) in allowance for credit losses(4,846) 1,018
 (6,052)278
 (4,846) 1,018
Recovery of specific allowance5,483
 5,428
 
631
 5,483
 5,428
637
 6,446
 (6,052)909
 637
 6,446
$11,524
 $10,211
 $(4,003)$10,509
 $11,524
 $10,211
Losses on available for sale fixed maturity securities in 2017, 2016 2015 and 20142015 were realized primarily due to strategies to reposition the fixed maturity security portfolio that result in improved net investment income, credit risk or duration profiles as they pertain to our asset liability management. Securities were sold at losses in 2017, 2016, and 2015 due to our long-term fundamental concern with the issuers' ability to meet their future financial obligations.
The following table summarizes the carrying value of our fixed maturity securities, mortgage loans on real estate and real estate ownedinvestments that have been non-income producing for 12 consecutive months:
 December 31,
 2016 2015
 (Dollars in thousands)
Fixed maturity securities, available for sale$1,651
 $10
Real estate owned
 1,800
 $1,651
 $1,810
 December 31,
 2017 2016
 (Dollars in thousands)
Fixed maturity securities, available for sale$8,680
 $1,651
We review and analyze all investments on an ongoing basis for changes in market interest rates and credit deterioration. This review process includes analyzing our ability to recover the amortized cost basis of each investment that has a fair value that is materially lower than its amortized cost and requires a high degree of management judgment and involves uncertainty. The evaluation of securities for other than temporary impairments is a quantitative and qualitative process, which is subject to risks and uncertainties.
We have a policy and process to identify securities that could potentially have impairments that are other than temporary. This process involves monitoring market events and other items that could impact issuers. The evaluation includes but is not limited to such factors as:
the length of time and the extent to which the fair value has been less than amortized cost or cost;
whether the issuer is current on all payments and all contractual payments have been made as agreed;
the remaining payment terms and the financial condition and near-term prospects of the issuer;
the lack of ability to refinance due to liquidity problems in the credit market;
the fair value of any underlying collateral;
the existence of any credit protection available;
our intent to sell and whether it is more likely than not we would be required to sell prior to recovery for debt securities;
our assessment in the case of equity securities including perpetual preferred stocks with credit deterioration that the security cannot recover to cost in a reasonable period of time;
our intent and ability to retain equity securities for a period of time sufficient to allow for recovery;
consideration of rating agency actions; and
changes in estimated cash flows of mortgage and asset backed securities.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


We determine whether other than temporary impairment losses should be recognized for debt and equity securities by assessing all facts and circumstances surrounding each security. Where the decline in fair value of debt securities is attributable to changes in market interest rates or to factors such as market volatility, liquidity and spread widening, and we anticipate recovery of all contractual or expected cash flows, we do not consider these investments to be other than temporarily impaired because we do not intend to sell these investments and it is not more likely than not we will be required to sell these investments before a recovery of amortized cost, which may be maturity. For equity securities, we recognize an impairment charge in the period in which we do not have the intent and ability to hold the securities until recovery of cost or we determine that the security will not recover to book value within a reasonable period of time. We determine what constitutes a reasonable period of time on a security-by-security basis by considering all the evidence available to us, including the magnitude of any unrealized loss and its duration.
Other than temporary impairment losses on equity securities are recognized in operations. If we intend to sell a debt security or if it is more likely than not that we will be required to sell a debt security before recovery of its amortized cost basis, other than temporary impairment has occurred and the difference between amortized cost and fair value will be recognized as a loss in operations.
If we do not intend to sell and it is not more likely than not we will be required to sell the debt security but also do not expect to recover the entire amortized cost basis of the security, an impairment loss would be recognized in operations in the amount of the expected credit loss. We determine the amount of expected credit loss by calculating the present value of the cash flows expected to be collected discounted at each security's acquisition yield based on our consideration of whether the security was of high credit quality at the time of acquisition. The difference between the present value of expected future cash flows and the amortized cost basis of the security is the amount of credit loss recognized in operations. The remaining amount of the other than temporary impairment is recognized in other comprehensive income (loss).
The determination of the credit loss component of a mortgage backed security is based on a number of factors. The primary consideration in this evaluation process is the issuer's ability to meet current and future interest and principal payments as contractually stated at time of purchase. Our review of these securities includes an analysis of the cash flow modeling under various default scenarios considering independent third party benchmarks, the seniority of the specific tranche within the structure of the security, the composition of the collateral and the actual default, loss severity and prepayment experience exhibited. With the input of third party assumptions for default projections, loss severity and prepayment expectations, we evaluate the cash flow projections to determine whether the security is performing in accordance with its contractual obligation.
We utilize the models from a leading structured product software specialist serving institutional investors. These models incorporate each security's seniority and cash flow structure. In circumstances where the analysis implies a potential for principal loss at some point in the future, we use the "best estimate" cash flow projection discounted at the security's effective yield at acquisition to determine the amount of our potential credit loss associated with this security. The discounted expected future cash flows equates to our expected recovery value. Any shortfall of the expected recovery when compared to the amortized cost of the security will be recorded as the credit loss component of the other than temporary impairment.
The cash flow modeling is performed on a security-by-security basis and incorporates actual cash flows on the residential mortgage backed securities through the current period, as well as the projection of remaining cash flows using a number of assumptions including default rates, prepayment rates and loss severity rates. The default curves we use are tailored to the Prime or Alt-A residential mortgage backed securities that we own, which assume lower default rates and loss severity for Prime securities versus Alt-A securities. These default curves are scaled higher or lower depending on factors such as current underlying mortgage loan performance, rating agency loss projections, loan to value ratios, geographic diversity, as well as other appropriate considerations.
The following table presents the range of significant assumptions used to determine the credit loss component of other than temporary impairments we have recognized on residential mortgage backed securities for the years ended December 31, 20162017 and 2015,2016, which are all senior level tranches within the structure of the securities:
 Discount Rate Default Rate Loss Severity Discount Rate Default Rate Loss Severity
Sector Vintage Min Max Min Max Min Max Vintage Min Max Min Max Min Max
Year ended December 31, 2017            
Prime 2005 7.0% 7.7% 8% 22% 40% 50%
 2006 7.3% 7.3% 14% 14% 40% 40%
 2007 6.2% 6.7% 15% 27% 50% 60%
            
Year ended December 31, 2016                        
Prime 2005 7.7% 7.7% 8% 14% 50% 50% 2005 7.7% 7.7% 8% 14% 50% 50%
 2006 6.5% 7.3% 12% 13% 40% 50% 2006 6.5% 7.3% 12% 13% 40% 50%
 2007 6.2% 6.4% 18% 31% 50% 55% 2007 6.2% 6.4% 18% 31% 50% 55%
Alt-A 2005 7.4% 7.4% 11% 11% 60% 60% 2005 7.4% 7.4% 11% 11% 60% 60%
            
Year ended December 31, 2015            
Prime 2006 6.5% 7.4% 12% 14% 40% 50%
 2007 5.8% 7.0% 15% 25% 45% 55%
Alt-A 2005 5.6% 7.4% 13% 99% 2% 50%

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The determination of the credit loss component of a corporate bond (including redeemable preferred stocks) is based on the underlying financial performance of the issuer and their ability to meet their contractual obligations. Considerations in our evaluation include, but are not limited to, credit rating changes, financial statement and ratio analysis, changes in management, significant changes in credit spreads, breaches of financial covenants and a review of the economic outlook for the industry and markets in which they trade. In circumstances where an issuer appears unlikely to meet its future obligation, or the security's price decline is deemed other than temporary, an estimate of credit loss is determined. Credit loss is calculated using default probabilities as derived from the credit default swaps markets in conjunction with recovery rates derived from independent third party analysis or a best estimate of credit loss. This credit loss rate is then incorporated into a present value calculation based on an expected principal loss in the future discounted at the yield at the date of purchase and compared to amortized cost to determine the amount of credit loss associated with the security.
In addition, for debt securities which we do not intend to sell and it is not more likely than not we will be required to sell, but our intent changes due to changes or events that could not have been reasonably anticipated, an other than temporary impairment charge is recognized. Once an impairment charge has been recorded, we then continue to review the other than temporarily impaired securities for appropriate valuation on an ongoing basis. Unrealized losses may be recognized in future periods through a charge to earnings should we later conclude that the decline in fair value below amortized cost is other than temporary pursuant to our accounting policy described above. The use of different methodologies and assumptions to determine the fair value of investments and the timing and amount of impairments may have a material effect on the amounts presented in our consolidated financial statements.
The following table summarizes other than temporary impairments by asset type:
Number
of Securities
 
Total
OTTI Losses
 
Portion of
OTTI Losses
Recognized in (from)
Other
Comprehensive
Income
 
Net OTTI
Losses
Recognized
in Operations
  (Dollars in thousands)
Year ended December 31, 2017       
Fixed maturity securities, available for sale:       
Corporate securities:       
Industrial1
 $(2,485) $
 $(2,485)
Residential mortgage backed securities8
 (273) (1,585) (1,858)
Other asset backed securities1
 
 (287) (287)
Number
of Securities
 
Total
OTTI Losses
 
Portion of
OTTI Losses
Recognized in (from)
Other
Comprehensive
Income
 
Net OTTI
Losses
Recognized
in Operations
10
 $(2,758) $(1,872) $(4,630)
  (Dollars in thousands)       
Year ended December 31, 2016              
Fixed maturity securities, available for sale:              
Corporate securities:              
Energy2
 $(642) $
 $(642)2
 $(642) $
 $(642)
Materials1
 (4,554) 1,575
 (2,979)1
 (4,554) 1,575
 (2,979)
Telecommunications1
 (4,462) 562
 (3,900)1
 (4,462) 562
 (3,900)
Utilities2
 (6,961) 798
 (6,163)2
 (6,961) 798
 (6,163)
Residential mortgage backed securities9
 
 (783) (783)9
 
 (783) (783)
Commercial mortgage backed securities5
 (1,540) 
 (1,540)5
 (1,540) 
 (1,540)
Other asset backed securities2
 (3,190) (3,482) (6,672)2
 (3,190) (3,482) (6,672)
22
 $(21,349) $(1,330) $(22,679)22
 $(21,349) $(1,330) $(22,679)
              
Year ended December 31, 2015              
Fixed maturity securities, available for sale:              
Corporate securities:              
Industrial2
 $(15,414) $2,975
 $(12,439)2
 $(15,414) $2,975
 $(12,439)
Residential mortgage backed securities11
 (133) (2,089) (2,222)11
 (133) (2,089) (2,222)
Other asset backed securities1
 (10,000) 5,125
 (4,875)1
 (10,000) 5,125
 (4,875)
14
 $(25,547) $6,011
 $(19,536)14
 $(25,547) $6,011
 $(19,536)
       
Year ended December 31, 2014       
Fixed maturity securities, available for sale:       
Residential mortgage backed securities7
 $
 $(2,627) $(2,627)

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The cumulative portion of other than temporary impairments determined to be credit losses which have been recognized in operations for debt securities are summarized as follows:
Year Ended December 31,Year Ended December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Cumulative credit loss at beginning of year$(145,824) $(127,050)$(166,375) $(145,824)
Credit losses on securities for which OTTI has not previously been recognized(18,414) (17,447)(2,758) (18,414)
Additional credit losses on securities for which OTTI has previously been recognized(4,265) (2,089)(1,872) (4,265)
Accumulated losses on securities that were disposed of during the period2,128
 762
13,939
 2,128
Cumulative credit loss at end of year$(166,375) $(145,824)$(157,066) $(166,375)
The following table summarizes the cumulative noncredit portion of OTTI and the change in fair value since recognition of OTTI, both of which were recognized in other comprehensive income, by major type of security, for securities that are part of our investment portfolio at December 31, 20162017 and 2015:2016:

Amortized Cost
 OTTI Recognized in Other Comprehensive Income Change in Fair Value Since OTTI was Recognized 

Fair Value

Amortized Cost
 OTTI Recognized in Other Comprehensive Income Change in Fair Value Since OTTI was Recognized 

Fair Value
(Dollars in thousands)
December 31, 2017       
Fixed maturity securities, available for sale:       
Corporate securities$13,015
 $(4,263) $10,739
 $19,491
Residential mortgage backed securities297,582
 (168,355) 201,620
 330,847
Other asset backed securities4,567
 (1,356) (1,875) 1,336
(Dollars in thousands)$315,164
 $(173,974) $210,484
 $351,674
December 31, 2016              
Fixed maturity securities, available for sale:              
Corporate securities$17,549
 $(5,910) $13,566
 $25,205
$17,549
 $(5,910) $13,566
 $25,205
Residential mortgage backed securities368,862
 (169,941) 205,854
 404,775
368,862
 (169,941) 205,854
 404,775
Commercial mortgage backed securities6,596
 
 (107) 6,489
6,596
 
 (107) 6,489
Other asset backed securities6,683
 (1,643) (1,566) 3,474
6,683
 (1,643) (1,566) 3,474
$399,690
 $(177,494) $217,747
 $439,943
$399,690
 $(177,494) $217,747
 $439,943
December 31, 2015       
Fixed maturity securities, available for sale:       
Corporate securities$6,396
 $(2,975) $9
 $3,430
Residential mortgage backed securities466,871
 (170,724) 199,149
 495,296
Other asset backed securities8,154
 (5,125) (553) 2,476
$481,421
 $(178,824) $198,605
 $501,202
At December 31, 20162017 and 2015,2016, fixed maturity securities and short-term investments with an amortized cost of $43.5$47.5 billion and $38.3$43.5 billion, respectively, were on deposit with state agencies to meet regulatory requirements. There are no restrictions on these assets.
At December 31, 20162017 and 2015,2016, we had no investment in any person or its affiliates (other than bonds issued by agencies of the United States Government) that exceeded 10% of stockholders' equity.
4.     Mortgage Loans on Real Estate
Our mortgage loan portfolio is summarized in the following table. There were commitments outstanding of $75.562.0 million at December 31, 2016.2017.
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Principal outstanding$2,490,619
 $2,449,909
$2,674,315
 $2,490,619
Loan loss allowance(8,427) (14,142)(7,518) (8,427)
Deferred prepayment fees(1,236) (510)(1,266) (1,236)
Carrying value$2,480,956
 $2,435,257
$2,665,531
 $2,480,956

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The portfolio consists of commercial mortgage loans collateralized by the related properties and diversified as to property type, location and loan size. Our mortgage lending policies establish limits on the amount that can be loaned to one borrower and other criteria to attempt to reduce the risk of default. The mortgage loan portfolio is summarized by geographic region and property type as follows:
December 31,December 31,
2016 20152017 2016
Principal Percent Principal PercentPrincipal Percent Principal Percent
(Dollars in thousands)(Dollars in thousands)
Geographic distribution              
East$635,434
 25.5% $698,113
 28.5%$548,067
 20.5% $635,434
 25.5%
Middle Atlantic151,640
 6.1% 160,261
 6.6%163,485
 6.1% 151,640
 6.1%
Mountain235,932
 9.5% 252,442
 10.3%308,486
 11.5% 235,932
 9.5%
New England12,724
 0.5% 13,161
 0.5%12,265
 0.5% 12,724
 0.5%
Pacific385,683
 15.5% 355,268
 14.5%466,030
 17.4% 385,683
 15.5%
South Atlantic519,065
 20.8% 456,227
 18.6%609,736
 22.8% 519,065
 20.8%
West North Central325,447
 13.1% 313,120
 12.8%324,808
 12.2% 325,447
 13.1%
West South Central224,694
 9.0% 201,317
 8.2%241,438
 9.0% 224,694
 9.0%
$2,490,619
 100.0% $2,449,909
 100.0%$2,674,315
 100.0% $2,490,619
 100.0%
Property type distribution
   
  
   
  
Office$308,578
 12.4% $396,154
 16.2%$283,926
 10.6% $308,578
 12.4%
Medical Office50,780
 2.1% 77,438
 3.2%34,338
 1.3% 50,780
 2.1%
Retail886,942
 35.6% 790,158
 32.2%1,040,028
 38.9% 886,942
 35.6%
Industrial/Warehouse700,644
 28.1% 686,400
 28.0%677,770
 25.3% 700,644
 28.1%
Hotel
 % 3,361
 0.1%
Apartment375,837
 15.1% 352,971
 14.4%462,897
 17.3% 375,837
 15.1%
Mixed use/other167,838
 6.7% 143,427
 5.9%175,356
 6.6% 167,838
 6.7%
$2,490,619
 100.0% $2,449,909
 100.0%$2,674,315
 100.0% $2,490,619
 100.0%
Our financing receivables currently consist of one portfolio segment which is our commercial mortgage loan portfolio. These are mortgage loans with collateral consisting of commercial real estate and borrowers consisting mostly of limited liability partnerships or limited liability corporations.
We evaluate our mortgage loan portfolio for the establishment of a loan loss allowance by specific identification of impaired loans and the measurement of an estimated loss for each individual loan identified. A mortgage loan is impaired when it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement. If we determine that the value of any specific mortgage loan is impaired, the carrying amount of the mortgage loan will be reduced to its fair value, based upon the present value of expected future cash flows from the loan discounted at the loan's effective interest rate, or the fair value of the underlying collateral less estimated costs to sell.
In addition, we analyze the mortgage loan portfolio for the need of a general loan allowance for probable losses on all other loans on a quantitative and qualitative basis. The amount of the general loan allowance is based upon management's evaluation of the collectability of the loan portfolio, historical loss experience, delinquencies, credit concentrations, underwriting standards and national and local economic conditions.
We rate each of the mortgage loans in our portfolio based on factors such as historical operating performance, loan to value ratio and economic outlook, among others. We calculate a loss factor to apply to each rating based on historical losses we have recognized in our mortgage loan portfolio. We apply the loss factors to the total principal outstanding within each rating category to determine an appropriate estimate of the general loan loss allowance. We also assess the portfolio qualitatively and apply a loss rate to all loans without a specific allowance based on management's assessment of economic conditions, and we apply an additional amount of loss allowance to a group of loans that we have identified as having higher risk of loss.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The following table presents a rollforward of our specific and general valuation allowances for mortgage loans on real estate:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Specific
Allowance
 
General
Allowance
 
Specific
Allowance
 
General
Allowance
 
Specific
Allowance
 
General
Allowance
Specific
Allowance
 
General
Allowance
 
Specific
Allowance
 
General
Allowance
 
Specific
Allowance
 
General
Allowance
(Dollars in thousands)(Dollars in thousands)
Beginning allowance balance$(7,842) $(6,300) $(12,333) $(10,300) $(16,847) $(9,200)$(1,327) $(7,100) $(7,842) $(6,300) $(12,333) $(10,300)
Charge-offs5,078
 
 2,045
 
 9,211
 

 
 5,078
 
 2,045
 
Recoveries5,483
 
 5,428
 
 255
 
631
 
 5,483
 
 5,428
 
Change in provision for credit losses(4,046) (800) (2,982) 4,000
 (4,952) (1,100)(722) 1,000
 (4,046) (800) (2,982) 4,000
Ending allowance balance$(1,327) $(7,100) $(7,842) $(6,300) $(12,333) $(10,300)$(1,418) $(6,100) $(1,327) $(7,100) $(7,842) $(6,300)
The specific allowance represents the total credit loss allowances on loans which are individually evaluated for impairment. The general allowance is for the group of loans discussed above which are collectively evaluated for impairment. The following table presents the total outstanding principal of loans evaluated for impairment by basis of impairment method:
December 31,December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Individually evaluated for impairment$4,640
 $21,277
 $29,116
$5,445
 $4,640
 $21,277
Collectively evaluated for impairment2,485,979
 2,428,632
 2,428,605
2,668,870
 2,485,979
 2,428,632
Total loans evaluated for impairment$2,490,619
 $2,449,909
 $2,457,721
$2,674,315
 $2,490,619
 $2,449,909
Charge-offs include allowances that have been established on loans that were satisfied either by taking ownership of the collateral or by some other means such as discounted pay-off or loan sale. When ownership of the property is taken it is recorded at the lower of the mortgage loan's carrying value or the property's fair value (based on appraised values) less estimated costs to sell. The real estate owned is recorded as a component of otherOther investments and the mortgage loan is recorded as fully paid, with any allowance for credit loss that has been established charged off. Fair value of the real estate is determined by third party appraisal. Recoveries are situations where we have received a payment from the borrower in an amount greater than the carrying value of the loan (principal outstanding less specific allowance).
DuringWe did not own any real estate during the year ended December 31, 2014, seven mortgage loans were satisfied by taking ownership of any real estate serving as collateral.2017. The following table summarizes the activity in the real estate owned, included in Other investments, which was obtained in satisfaction of mortgage loans on real estate:
 Year Ended December 31,
 2016 2015 2014
 (Dollars in thousands)
Real estate owned at beginning of period$6,485
 $20,238
 $22,844
Real estate acquired in satisfaction of mortgage loans
 
 14,555
Additions
 121
 
Sales(6,444) (12,322) (14,134)
Impairments
 (1,297) (2,441)
Depreciation(41) (255) (586)
Real estate owned at end of period$
 $6,485
 $20,238

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


 Year Ended December 31,
 2016 2015
 (Dollars in thousands)
Real estate owned at beginning of period$6,485
 $20,238
Additions
 121
Sales(6,444) (12,322)
Impairments
 (1,297)
Depreciation(41) (255)
Real estate owned at end of period$
 $6,485
We analyze credit risk of our mortgage loans by analyzing all available evidence on loans that are delinquent and loans that are in a workout period.
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Credit Exposure--By Payment Activity   
Credit Exposure - By Payment Activity   
Performing$2,489,028
 $2,438,341
$2,670,657
 $2,489,028
In workout1,591
 11,568
1,436
 1,591
Delinquent
 
Collateral dependent
 
2,222
 
$2,490,619
 $2,449,909
$2,674,315
 $2,490,619

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The loans that are categorized as "in workout" consist of loans that we have agreed to lower or no mortgage payments for a period of time while the borrowers address cash flow and/or operational issues. The key features of these workouts have been determined on a loan-by-loan basis. Most of these loans are in a period of low cash flow due to tenants vacating their space or tenants requesting rent relief during difficult economic periods. Generally, we have allowed the borrower a six month interest only period and in some cases a twelve month period of interest only. Interest only workout loans are expected to return to their regular debt service payments after the interest only period. Interest only loans that are not fully amortizing will have a larger balance at their balloon date than originally contracted. Fully amortizing loans that are in interest only periods will have larger debt service payments for their remaining term due to lost principal payments during the interest only period. In limited circumstances we have allowed borrowers to pay the principal portion of their loan payment into an escrow account that can be used for capital and tenant improvements for a period of not more than twelve months. In these situations new loan amortization schedules are calculated based on the principal not collected during this twelve month workout period and larger payments are collected for the remaining term of each loan. In all cases, the original interest rate and maturity date have not been modified, and we have not forgiven any principal amounts.
Mortgage loans are considered delinquent when they become 60 days or more past due. In general, when loans become 90 days past due, become collateral dependent or enter a period with no debt service payments required we place them on non-accrual status and discontinue recognizing interest income. If payments are received on a delinquent loan, interest income is recognized to the extent it would have been recognized if normal principal and interest would have been received timely. If the payments are received to bring a delinquent loan back to current we will resume accruing interest income on that loan. There were noOutstanding principal of loans in non-accrual status at December 31, 2016 or 2015.2017 totaled $2.2 million. There were no loans in non-accrual status at December 31, 2016.
We define collateral dependent loans as those mortgage loans for which we will depend on the value of the collateral real estate to satisfy the outstanding principal of the loan.
All of our commercial mortgage loans depend on the cash flow of the borrower to be at a sufficient level to service the principal and interest payments as they come due. In general, cash inflows of the borrowers are generated by collecting monthly rent from tenants occupying space within the borrowers' properties. Our borrowers face collateral risks such as tenants going out of business, tenants struggling to make rent payments as they become due, and tenants canceling leases and moving to other locations. We have a number of loans where the real estate is occupied by a single tenant. Our borrowers sometimes face both a reduction in cash flow on their mortgage property as well as a reduction in the fair value of the real estate collateral. If borrowers are unable to replace lost rent revenue and increases in the fair value of their property do not materialize, we could potentially incur more losses than what we have allowed for in our specific and general loan loss allowances.
Aging of financing receivables is summarized in the following table, with loans in a "workout" period as of the reporting date considered current if payments are current in accordance with agreed upon terms:
 30 - 59 Days 60 - 89 Days 
90 Days
and Over
 
Total
Past Due
 Current 
Collateral
Dependent
Receivables
 
Total
Financing
Receivables
 (Dollars in thousands)
Commercial Mortgage Loans             
December 31, 2016$2,737
 $
 $
 $2,737
 $2,487,882
 $
 $2,490,619
December 31, 2015$
 $
 $
 $
 $2,449,909
 $
 $2,449,909

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


 30 - 59 Days 60 - 89 Days 
90 Days
and Over
 
Total
Past Due
 Current 
Collateral
Dependent
Receivables
 
Total
Financing
Receivables
 (Dollars in thousands)
Commercial Mortgage Loans             
December 31, 2017$
 $
 $
 $
 $2,672,093
 $2,222
 $2,674,315
December 31, 2016$2,737
 $
 $
 $2,737
 $2,487,882
 $
 $2,490,619
Financing receivables summarized in the following two tables represent all loans that we are either not currently collecting, or those we feel it is probable we will not collect all amounts due according to the contractual terms of the loan agreements (all loans that we have worked with the borrower to alleviate short-term cash flow issues, loans delinquent for 60 days or more at the reporting date, loans we have determined to be collateral dependent and loans that we have recorded specific impairments on that we feel may continue to have performance issues).
Recorded Investment Unpaid Principal Balance 
Related
Allowance
Recorded Investment Unpaid Principal Balance 
Related
Allowance
(Dollars in thousands)
December 31, 2017     
Mortgage loans with an allowance$4,027
 $5,445
 $(1,418)
Mortgage loans with no related allowance1,436
 1,436
 
(Dollars in thousands)$5,463
 $6,881
 $(1,418)
December 31, 2016          
Mortgage loans with an allowance$3,313
 $4,640
 $(1,327)$3,313
 $4,640
 $(1,327)
Mortgage loans with no related allowance1,591
 1,591
 
1,591
 1,591
 
$4,904
 $6,231
 $(1,327)$4,904
 $6,231
 $(1,327)
December 31, 2015     
Mortgage loans with an allowance$13,435
 $21,277
 $(7,842)
Mortgage loans with no related allowance8,859
 8,859
 
$22,294
 $30,136
 $(7,842)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Average Recorded Investment Interest Income RecognizedAverage Recorded Investment Interest Income Recognized
(Dollars in thousands)
December 31, 2017   
Mortgage loans with an allowance$4,464
 $221
Mortgage loans with no related allowance1,513
 91
(Dollars in thousands)$5,977
 $312
December 31, 2016      
Mortgage loans with an allowance$3,398
 $301
$3,398
 $301
Mortgage loans with no related allowance1,665
 73
1,665
 73
$5,063
 $374
$5,063
 $374
December 31, 2015      
Mortgage loans with an allowance$13,893
 $1,117
$13,893
 $1,117
Mortgage loans with no related allowance8,930
 584
8,930
 584
$22,823
 $1,701
$22,823
 $1,701
December 31, 2014   
Mortgage loans with an allowance$18,465
 $1,797
Mortgage loans with no related allowance2,656
 43
$21,121
 $1,840
A Troubled Debt Restructuring ("TDR") is a situation where we have granted a concession to a borrower for economic or legal reasons related to the borrower's financial difficulties that we would not otherwise consider. A mortgage loan that has been granted new terms, including workout terms as described previously, would be considered a TDR if it meets conditions that would indicate a borrower is experiencing financial difficulty and the new terms constitute a concession on our part. We analyze all loans where we have agreed to workout terms and all loans that we have refinanced to determine if they meet the definition of a TDR. We consider the following factors in determining whether or not a borrower is experiencing financial difficulty:
borrower is in default,
borrower has declared bankruptcy,
there is growing concern about the borrower's ability to continue as a going concern,
borrower has insufficient cash flows to service debt,
borrower's inability to obtain funds from other sources, and
there is a breach of financial covenants by the borrower.
If the borrower is determined to be in financial difficulty, we consider the following conditions to determine if the borrower was granted a concession:
assets used to satisfy debt are less than our recorded investment,
interest rate is modified,
maturity date extension at an interest rate less than market rate,
capitalization of interest,
delaying principal and/or interest for a period of three months or more, and
partial forgiveness of the balance or charge-off.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Mortgage loan workouts, refinances or restructures that are classified as TDRs are individually evaluated and measured for impairment. A summary of mortgage loans on commercial real estate with outstanding principal at December 31, 20162017 and 20152016 that we determined to be TDRs are as follows:
Geographic Region 
Number of
TDRs
 
Principal
Balance
Outstanding
 
Specific Loan
Loss Allowance
 
Net
Carrying
Amount
 
Number of
TDRs
 
Principal
Balance
Outstanding
 
Specific Loan
Loss Allowance
 
Net
Carrying
Amount
 (Dollars in thousands)
Year ended December 31, 2017      
South Atlantic 1 $2,947
 $
 $2,947
East North Central 1 1,933
 (467) 1,466
 2 $4,880
 $(467) $4,413
 (Dollars in thousands)      
Year ended December 31, 2016            
South Atlantic 1 $3,004
 $
 $3,004
 1 $3,004
 $
 $3,004
East North Central 1 2,020
 (467) 1,553
 1 2,020
 (467) 1,553
 2 $5,024
 $(467) $4,557
 2 $5,024
 $(467) $4,557
      
Year ended December 31, 2015      
South Atlantic 6 $11,155
 $(2,992) $8,163
East North Central 2 3,306
 (467) 2,839
West North Central 1 5,913
 
 5,913
 9 $20,374
 $(3,459) $16,915

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


5.     Derivative Instruments
None of our derivatives qualify for hedge accounting, thus, any change in the fair value of the derivatives is recognized immediately in the consolidated statements of operations. The fair value of our derivative instruments, including derivative instruments embedded in fixed index annuity contracts, presented in the consolidated balance sheets are as follows:
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Assets      
Derivative instruments      
Call options$830,519
 $337,256
$1,568,380
 $830,519
Other assets      
Interest rate caps1,082
 1,410
415
 1,082
$831,601
 $338,666
$1,568,795
 $831,601
Liabilities      
Policy benefit reserves—annuity products   
Fixed index annuities—embedded derivatives$6,563,288
 $5,983,622
Policy benefit reserves - annuity products   
Fixed index annuities - embedded derivatives, net$8,790,427
 $6,563,288
Other liabilities      
Interest rate swap2,113
 3,139
789
 2,113
$6,565,401
 $5,986,761
$8,791,216
 $6,565,401
The changes in fair value of derivatives included in the consolidated statements of operations are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Change in fair value of derivatives:          
Call options$165,029
 $(327,921) $521,947
$1,678,283
 $165,029
 $(327,921)
2015 notes hedges
 (4,516) (8,934)
 
 (4,516)
Interest rate swap(482) (2,341) (4,863)255
 (482) (2,341)
Interest rate caps(328) (1,368) (3,325)(667) (328) (1,368)
$164,219
 $(336,146) $504,825
$1,677,871
 $164,219
 $(336,146)
Change in fair value of embedded derivatives:          
Fixed index annuities—embedded derivatives (see Note 2)$145,045
 $(825,668) $(532,337)
Fixed index annuities - embedded derivatives (see Note 2)$174,154
 $145,045
 $(825,668)
Other changes in difference between policy benefit reserves computed using derivative accounting vs. long-duration contracts accounting398,420
 365,486
 579,885
745,581
 398,420
 365,486
2015 notes embedded conversion derivative (see Note 9)
 (4,516) (19,036)
 
 (4,516)
2029 notes embedded conversion derivative (see Note 9)
 
 3,809
$543,465
 $(464,698) $32,321
$919,735
 $543,465
 $(464,698)
The amounts presented as "Other changes in difference between policy benefit reserves computed using derivative accounting vs. long-duration contracts accounting" represents the total change in the difference between policy benefit reserves for fixed index annuities computed under the derivative accounting standard and the long-duration contracts accounting standard at each balance sheet date, less the change in fair value of our fixed index annuities embedded derivatives that is presented as Level 3 liabilities in Note 2.
We have fixed index annuity products that guarantee the return of principal to the policyholder and credit interest based on a percentage of the gain in a specified market index. When fixed index annuity deposits are received, a portion of the deposit is used to purchase derivatives consisting of call options on the applicable market indices to fund the index credits due to fixed index annuity policyholders. Substantially all such call options are one year options purchased to match the funding requirements of the underlying policies. The call options are marked to fair value with the change in fair value included as a component of revenues. The change in fair value of derivatives includes the gains or losses recognized at the expiration of the option term or upon early termination and the changes in fair value for open positions. On the respective anniversary dates of the index policies, the index used to compute the annual index credit is reset and we purchase new one-year call options to fund the next annual index credit. We manage the cost of these purchases through the terms of our fixed index annuities, which permit us to change caps, participation rates, and/or asset fees, subject to guaranteed minimums on each policy's anniversary date. By adjusting caps, participation rates, or asset fees, we can generally manage option costs except in cases where the contractual features would prevent further modifications.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Our strategy attempts to mitigate any potential risk of loss due to the nonperformance of the counterparties to these call options through a regular monitoring process which evaluates the program's effectiveness. We do not purchase call options that would require payment or collateral to another institution and our call options do not contain counterparty credit-risk-related contingent features. We are exposed to risk of loss in the event of nonperformance by the counterparties and, accordingly, we purchase our option contracts from multiple counterparties and evaluate the creditworthiness of all counterparties prior to purchase of the contracts. All of these options have been purchased from nationally recognized financial institutions with a Standard and Poor's credit rating of A- or higher at the time of purchase and the maximum credit exposure to any single counterparty is subject to concentration limits. We also have credit support agreements that allow us to request the counterparty to provide collateral to us when the fair value of our exposure to the counterparty exceeds specified amounts.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


The notional amount and fair value of our call options by counterparty and each counterparty's current credit rating are as follows:
 December 31, December 31,
 2016 2015 2017 2016
Counterparty Credit Rating (S&P) Credit Rating (Moody's) 
Notional
Amount
 Fair Value 
Notional
Amount
 Fair Value Credit Rating (S&P) Credit Rating (Moody's) 
Notional
Amount
 Fair Value 
Notional
Amount
 Fair Value
 (Dollars in thousands) (Dollars in thousands)
Bank of America A+ A1 $5,958,884
 $178,477
 $6,257,861
 $67,662
 A+ Aa3 $4,645,366
 $237,955
 $5,958,884
 $178,477
Barclays A- A1 3,441,832
 89,721
 2,463,768
 35,273
 A A1 4,135,537
 154,127
 3,441,832
 89,721
BNP Paribas A A1 1,199,265
 19,598
 1,520,710
 16,944
 A Aa3 1,411,989
 73,650
 1,199,265
 19,598
Canadian Imperial Bank of Commerce A+ A1 2,808,030
 84,268
 
 
Citibank, N.A. A+ A1 4,038,528
 97,094
 3,786,498
 23,587
 A+ A1 4,104,666
 219,900
 4,038,528
 97,094
Credit Suisse A A1 2,130,710
 44,242
 1,278,492
 12,508
 A A1 3,538,855
 137,384
 2,130,710
 44,242
Deutsche Bank BBB+ Baa2 25,935
 892
 1,349,002
 10,704
 A- Baa2 
 
 25,935
 892
J.P. Morgan A+ Aa3 1,785,583
 19,645
 838,982
 5,283
 A+ Aa3 1,753,649
 109,689
 1,785,583
 19,645
Morgan Stanley A+ A1 2,543,421
 64,425
 3,465,457
 33,171
 A+ A1 3,408,179
 184,323
 2,543,421
 64,425
Royal Bank of Canada AA- Aa3 3,384,310
 103,510
 2,820,410
 48,654
 AA- A1 3,027,469
 104,141
 3,384,310
 103,510
SunTrust A- Baa1 2,375,418
 72,990
 1,308,434
 20,028
 A- Baa1 2,331,168
 90,399
 2,375,418
 72,990
Wells Fargo AA- Aa2 3,850,842
 130,545
 4,187,955
 63,442
 AA- Aa2 4,036,255
 162,781
 3,850,842
 130,545
Exchange traded 313,354
 9,380
 
 
 296,840
 9,763
 313,354
 9,380
 $31,048,082
 $830,519
 $29,277,569
 $337,256
 $35,498,003
 $1,568,380
 $31,048,082
 $830,519
As of December 31, 20162017 and 2015,2016, we held $827.8 million$1.6 billion and $349.8$827.8 million, respectively, of cash and cash equivalents and other securities from counterparties for derivative collateral, which is included in otherOther liabilities on our consolidated balance sheets. This derivative collateral limits the maximum amount of economic loss due to credit risk that we would incur if parties to the call options failed completely to perform according to the terms of the contracts to $55.5$11.9 million and $36.9$55.5 million at December 31, 20162017 and 2015,2016, respectively.
The future annual index credits on our fixed index annuities are treated as a "series of embedded derivatives" over the expected life of the applicable contract. We do not purchase call options to fund the index liabilities which may arise after the next policy anniversary date. We must value both the call options and the related forward embedded options in the policies at fair value. During the year ended December 31, 2014, we revised future period assumptions for lapse rates and the expected costs of annual call options used in determining fixed index annuity embedded derivatives. These revisions decreased the change in fair value of embedded derivatives for the year ended December 31, 2014 by $62.6 million, which after related adjustments to deferred sales inducements and deferred policy acquisition costs and income taxes, increased net income by $14.8 million.
We entered into an interest rate swap and interest rate caps to manage interest rate risk associated with the floating rate component on certain of our subordinated debentures. See Note 10 for more information on our subordinated debentures. The terms of the interest rate swap provide that we pay a fixed rate of interest and receive a floating rate of interest. The terms of the interest rate caps limit the three month London Interbank Offered Rate ("LIBOR") to 2.50%. The interest rate swap and caps are not effective hedges under accounting guidance for derivative instruments and hedging activities. Therefore, we record the interest rate swap and caps at fair value and any net cash payments received or paid are included in the change in fair value of derivatives in the consolidated statements of operations.
Details regarding the interest rate swap are as follows:
   December 31,   December 31,
   2016 2015   2017 2016
Maturity Date 
Notional
Amount
 Receive Rate Pay Rate Counterparty Fair Value Fair Value 
Notional
Amount
 Receive Rate Pay Rate Counterparty Fair Value Fair Value
         (Dollars in thousands)         (Dollars in thousands)
March 15, 2021 $85,500
 LIBOR 2.415% SunTrust $(2,113) $(3,139) $85,500
 LIBOR 2.415% SunTrust $(789) $(2,113)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Details regarding the interest rate caps are as follows:
   December 31,   December 31,
   2016 2015   2017 2016
Maturity Date Notional Amount Floating Rate Cap Rate Counterparty Fair Value Fair Value Notional Amount Floating Rate Cap Rate Counterparty Fair Value Fair Value
         (Dollars in thousands)         (Dollars in thousands)
July 7, 2021 $40,000
 LIBOR 2.50% SunTrust $542
 $708
 $40,000
 LIBOR 2.50% SunTrust $207
 $542
July 8, 2021 12,000
 LIBOR 2.50% SunTrust 163
 212
 12,000
 LIBOR 2.50% SunTrust 62
 163
July 29, 2021 27,000
 LIBOR 2.50% SunTrust 377
 490
 27,000
 LIBOR 2.50% SunTrust 146
 377
 $79,000
 $1,082
 $1,410
 $79,000
 $415
 $1,082
The interest rate swap converts floating rates to fixed rates for seven years which began in March 2014. The interest rate caps cap our interest rates for seven years which began in July 2014. As of December 31, 2016,2017, we deposited $0.7$0.5 million of collateral with the counterparty to the swap and caps.swap.
In September 2010, concurrently with the issuance of $200.0 million principal amount of 3.50% Convertible Senior Notes due September 15, 2015 (the "2015 notes"), we entered into hedge transactions (the "2015 notes hedges") with two counterparties whereby we would receive the cash equivalent of the conversion spread on 16.0 million shares of our common stock based upon a strike price of $12.50$12.50 per share, subject to certain conversion rate adjustments in the 2015 notes. The number of shares and strike price of the 2015 notes hedges were subject to adjustment based on dividends we paid subsequent to their purchase. The 2015 notes hedges expired on September 15, 2015, and we received $25.8 million in cash. The 2015 notes hedges were accounted for as derivative assets and were included in other assets in our consolidated balance sheets. The 2015 notes embedded conversion derivative liability was settled with the extinguishment of the 2015 notes (see Note 9) whereby we paid holders of the notes a total of $25.8 million in cash to settle the conversion premium. The 2015 notes hedges and 2015 notes embedded conversion derivative were adjusted to fair value each reporting period and unrealized gains and losses are reflected in our consolidated statements of operations.
In separate transactions, we sold warrants (the "2015 warrants") to the 2015 notes hedges counterparties for the purchase of up to 16.0 million shares of our common stock at a price of $16.00$16.00 per share. We received $15.6$15.6 million in cash proceeds from the sale of the 2015 warrants, which was recorded as an increase in additional paid-in capital. The number of shares and strike price of the warrants were subject to adjustment based on dividends we paid subsequent to selling the warrants. The warrants expired on various dates from December 2015 through June 2016. Changes in the fair value of these warrants were not be recognized in our consolidated financial statements as the instruments remain classified as equity.
In December 2015, we began settling the 2015 warrants in net shares on a weekly basis, and completed the settlement of all warrants by June 30, 2016. 140,866 shares of our common stock were delivered to holders of the expiring warrants, of which 92,998 shares were issued during 2016. 2015 warrants remained outstanding on 1.6 million shares of our common stock at a strike price of $15.59 per share at December 31, 2015. As the average price of our common stock exceeded the strike price of the 2015 warrants while they were outstanding the dilutive effect of the 2015 warrants has been included in diluted earnings per share for the years ended December 31, 2016 2015 and 2014.2015.
In 2014, we entered into five separate partial unwind agreements with the counterparties to the 2015 notes hedges and the 2015 warrants to coincide with the extinguishment of a portion of our 2015 notes (see Note 9) whereby we agreed to settle the related 2015 notes hedges and the 2015 warrants and received net cash from the counterparties totaling $16.6 million. The agreements to settle the 2015 warrants in cash required us to reclassify $51.3 million from equity to a derivative liability which represented the fair value of the 2015 warrants committed to the unwind on the day that we entered into the unwind agreements. The fair value of these warrants did not change after reclassification as they were settled in cash at the time the agreements were executed.


6.     Deferred Policy Acquisition Costs, and Deferred Sales Inducements and Lifetime Income Benefit Rider Reserves
Policy acquisition costs deferred and amortized are as follows:
December 31,December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Balance at beginning of year$2,905,136
 $2,058,556
 $2,426,652
$2,905,377
 $2,905,136
 $2,058,556
Costs deferred during the year:          
Commissions538,863
 651,094
 421,802
401,124
 538,863
 651,094
Policy issue costs4,462
 6,545
 5,080
5,517
 4,462
 6,545
Amortization(374,012) (286,114) (163,578)(255,964) (374,012) (286,114)
Effect of net unrealized gains/losses(169,072) 475,055
 (631,400)(341,531) (169,072) 475,055
Balance at end of year$2,905,377
 $2,905,136
 $2,058,556
$2,714,523
 $2,905,377
 $2,905,136

Sales inducements deferred and amortized are as follows:
December 31,December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Balance at beginning of year$2,232,148
 $1,587,257
 $1,875,880
$2,208,218
 $2,232,148
 $1,587,257
Costs deferred during the year353,966
 486,924
 330,079
216,172
 353,966
 486,924
Amortization(251,166) (209,390) (131,419)(176,612) (251,166) (209,390)
Effect of net unrealized gains/losses(126,730) 367,357
 (487,283)(245,886) (126,730) 367,357
Balance at end of year$2,208,218
 $2,232,148
 $1,587,257
$2,001,892
 $2,208,218
 $2,232,148
We periodically revise the key assumptions used in the calculation of amortization of deferred policy acquisition costs and deferred sales inducements retrospectively through an unlocking process when estimates of current or future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products are revised. In addition, we periodically revise the assumptions used in determining reserves held for lifetime income benefit riders as experience develops that is different from our assumptions.
The unlocking adjustments in 2017 decreased amortization of deferred policy acquisition costs by $48.2 million and amortization of deferred sales inducements by $34.3 million. During the third quarter of 2017, the most significant revisions to such assumptions were account balance true-ups which were favorable to us due to stronger index credits than we assumed due to strong equity market performance and adjustments to generally decrease lapse rate assumptions to reflect better persistency experienced than assumed. The favorable impact of the account balance true-ups and lapse rate assumption changes was partially offset by reductions in estimated future gross profits attributable to revisions to assumptions used in determining reserves held for lifetime income benefit riders as well as an increase in estimated expenses associated with a reinsurance agreement with an unaffiliated reinsurer.
The unlocking adjustments in 2016 increased amortization of deferred policy acquisition costs by $48.2 million and amortization of deferred sales inducements by $35.8 million. We review these assumptions quarterly and as a result of this review we made adjustments in the first and third quarters of 2016. During the first quarter of 2016, we made adjustments to lower future spread assumptions after comparing investment spread assumptions toas actual investment spreads being earned showed investment spread and gross profits being less than what we were assuming in the three months ended December 31, 2015 and March 31, 2016 and determining thatour models due to decreases in the average yield earned on invested assets resulting from the continued low interest rate environment was creating shortfallsenvironment. We made further adjustments in investment spread and gross profits. During the third quarter of 2016 we made adjustments to extend the period of time in which we assume investment spread will grade up to our long-term spread targets by an additional two years as yields obtained on investments purchased in the third quarter of 2016 were much lower than we had anticipated as a result of the overall decline in investment yields that followed the Brexit vote. In addition, during the third quarter of 2016, revisions to assumptions used in determining reserves held for living income benefit riders resulted in a decrease in estimated future gross profits.
The unlocking adjustmentadjustments in 2015 decreased amortization of deferred policy acquisition costs by $11.0 million and amortization of deferred sales inducements by $5.6 million and included the impact of account balance true-ups as of September 30, 2015, which have beenwere favorable to us due to stronger equity market performance than we assumed, favorable adjustments to lapse assumptions to reflect better persistency experienced than assumed and unfavorable adjustments to investment spread to reflect lower spreads being earned than assumed. In 2015, theThe favorable impact of the account balance true-up and lapse assumption change was largely offset by reductions in estimated future gross profits attributable to revisions to the assumptions used in determining reserves held for the lifetime income benefit rider liability. riders.
The 2017, 2016 and 2015 revisions to reserves for lifetime income benefit riders were consistent with unlocking adjustment in 2014 decreased amortization offor deferred policy acquisition costs by $35.5 million and amortization for deferred sales inducements described above. The 2017 revisions increased interest sensitive and index product benefits by $12.6$21.6 million and includedwere primarily due to the impact oflapse rate assumption changes described above and changes to our account value true-upsgrowth projections. The 2016 revisions increased interest sensitive and index product benefits by $42.0 million and were primarily due to actual index credits on policies being lower than projected over the past four quarters. The 2015 revisions increased interest sensitive and index product benefits by $18.3 million and were primarily due to an increase to the primary election age to begin receiving lifetime income from 67 to 70 as our experience had shown that age 70 is the most popular age at which policyholders elect to begin receiving lifetime income benefit payments. The lifetime income benefit payments are determined by applying a payout factor to the rider's benefit base. The reserve (net of September 30, 2014coinsurance ceded) held for lifetime income benefit riders was $704.4 million and adjustments to future period assumptions for interest margins, surrenders$533.4 million at December 31, 2017 and certain expenses.2016, respectively.
7.     Reinsurance and Policy Provisions
Coinsurance
We have two coinsurance agreements with EquiTrust Life Insurance Company ("EquiTrust"), covering 70% of certain of American Equity Life's fixed index and fixed rate annuities issued from August 1, 2001 through December 31, 2001, 40% of those contracts issued during 2002 and 2003, and 20% of those contracts issued from January 1, 2004 to July 31, 2004. The business reinsured under these agreements may not be recaptured. Coinsurance deposits (aggregate policy benefit reserves transferred to EquiTrust under these agreements) were $0.7$0.6 billion and $0.8$0.7 billion at December 31, 20162017 and 2015,2016, respectively. We remain liable to policyholders with respect to the policy liabilities ceded to EquiTrust should EquiTrust fail to meet the obligations it has coinsured. None of the coinsurance deposits with EquiTrust are deemed by management to be uncollectible. The balance due under these agreements to EquiTrust was $9.7$11.0 million and $2.5$9.7 million at December 31, 20162017 and 2015,2016, respectively, and represents the fair value of call options held by us to fund index credits related to the ceded business net of cash due to or from EquiTrust related to monthly settlements of policy activity and other expenses.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


We have three coinsurance agreements with Athene Life Re Ltd. ("Athene"), an unauthorized life reinsurer domiciled in Bermuda. One agreement ceded 20% of certain of American Equity Life's fixed index annuities issued from January 1, 2009 through March 31, 2010. The business reinsured under this agreement is notno longer eligible for recapture until the end of the month following seven years after the date of issuance of the policy.recapture. The second agreement ceded 80% of American Equity Life's multi-year rate guaranteed annuities issued from July 1, 2009 through December 31, 2013 and 80% of Eagle Life's multi-year rate guaranteed annuities issued from November 20, 2013 through December 31, 2013. The business reinsured under this agreement may not be recaptured. The third agreement cedes 80% of American Equity Life's and Eagle Life's multi-year rate guaranteed annuities issued on or after January 1, 2014, 80% of Eagle Life's fixed index annuities issued on or afterprior to January 1, 20142017, 50% of Eagle Life's fixed index annuities issued from January 1, 2017 through December 31, 2018 and 80% of certain of American Equity Life's fixed index annuities issued from August 1, 2016 through December 31, 2016. The reinsurance agreement specifies that the coinsurance percentage for Eagle Life's fixed index annuities decreases to 50% for policies issued between January 1, 2017 and December 31, 2018, and to 20% for policies issued on or after January 1, 2019. The business reinsured under this agreement may not be recaptured. Coinsurance deposits (aggregate policy benefit reserves transferred to Athene under these agreements) were $3.9$4.2 billion and $2.4$3.9 billion at December 31, 20162017 and 2015,2016, respectively. American Equity Life is an intermediary for reinsurance of Eagle Life's business ceded to Athene. American Equity Life and Eagle Life remain liable to policyholders with respect to the policy liabilities ceded to Athene should Athene fail to meet the obligations it has coinsured. The annuity deposits that have been ceded to Athene are held in trusts and American Equity Life is named as the sole beneficiary of the trusts. The assets in the trusts are required to remain at a value that is sufficient to support the current balance of policy benefit liabilities of the ceded business on a statutory basis. If the value of the trust accounts would ever be less than the amount of the ceded policy benefit liabilities on a statutory basis, Athene is required to either establish a letter of credit or deposit securities in the trusts for the amount of any shortfall. None of the coinsurance deposits with Athene are deemed by management to be uncollectible. The balance due under these agreements to Athene was $45.8$79.9 million and $12.7$45.8 million at December 31, 20162017 and 2015,2016, respectively, and represents the fair value of call options held by us to fund index credits related to the ceded business net of cash due from Athene related to monthly settlements of policy activity.
Amounts ceded to EquiTrust and Athene under these agreements are as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Consolidated Statements of Operations          
Annuity product charges$5,366
 $5,427
 $5,956
$6,458
 $5,366
 $5,427
Change in fair value of derivatives18,446
 (14,360) 31,076
94,382
 18,446
 (14,360)
$23,812
 $(8,933) $37,032
$100,840
 $23,812
 $(8,933)
          
Interest sensitive and index product benefits$93,487
 $88,923
 $122,666
$177,332
 $93,487
 $88,923
Change in fair value of embedded derivatives23,848
 (22,616) 35,820
35,561
 23,848
 (22,616)
Other operating costs and expenses24,039
 9,922
 9,241
19,877
 24,039
 9,922
$141,374
 $76,229
 $167,727
$232,770
 $141,374
 $76,229
Consolidated Statements of Cash Flows          
Annuity deposits$(1,736,054) $(471,822) $(171,124)$(387,280) $(1,736,054) $(471,822)
Cash payments to policyholders418,499
 391,045
 280,308
380,683
 418,499
 391,045
$(1,317,555) $(80,777) $109,184
$(6,597) $(1,317,555) $(80,777)
Financing Arrangements
We have a reinsurance transaction with Hannover Life Reassurance Company of America ("Hannover"), which is treated as reinsurance under statutory accounting practices and as a financing arrangement under GAAP. The statutory surplus benefit under this agreement is eliminated under GAAP and the associated charges are recorded as risk charges and included in other operating costs and expenses in the consolidated statements of operations. The transaction became effective July 1, 2013 (the "2013 Hannover Transaction").
The 2013 Hannover Transaction, which was amended effective October 1, 2016, is a yearly renewable term reinsurance agreement for statutory purposes covering 45.6% of waived surrender charges related to penalty free withdrawals, deaths and lifetime income benefit rider payments as well as lifetime income benefit rider payments in excess of policy fund values on certain business. We may recapture the risks reinsured under this agreement as of the end of any quarter after December 31, 2020 and the agreement, as amended, makes it punitive to us if we do not recapture the business ceded no later than the first quarter of 2021. The reserve credit recorded on a statutory basis by American Equity Life was $638.1$737.3 million and $480.7$638.1 million at December 31, 20162017 and 2015,2016, respectively. We pay quarterly reinsurance premiums under this agreement with an experience refund calculated on a quarterly basis and a risk charge based on the pretax statutory benefit as of the end of each calendar quarter. Risk charges attributable to the 2013 Hannover Transaction were $28.5 million, $27.7 million, and $21.0 million during 2017, 2016 and 2015.2015, respectively.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Prior to its recapture in 2015, we had a coinsurance and yearly renewable term reinsurance agreement for statutory purposes that provided $49.2 million in net pretax statutory surplus benefit at inception in 2011 (the "2011 Hannover Transaction"). Pursuant to the terms of this agreement, pretax statutory surplus was reduced by $10.3 million and $10.8 million in 2015 and 2014, respectively. These amounts include risk charges equal to 1.25% of the pretax statutory surplus benefit as of the end of each calendar quarter. Risk charges attributable to the 2011 Hannover Transaction were $0.3 million and $0.8 million during 2015 and 2014, respectively.
Indemnity Reinsurance
In the normal course of business, we seek to limit our exposure to loss on any single insured and to recover a portion of benefits paid under our annuity, life and accident and health insurance products by ceding reinsurance to other insurance enterprises or reinsurers. Reinsurance contracts do not relieve us of our obligations to our policyholders. To the extent that reinsuring companies are later unable to meet obligations under reinsurance agreements, our life insurance subsidiaries would be liable for these obligations, and payment of these obligations could result in losses to us. To limit the possibility of such losses, we evaluate the financial condition of our reinsurers, and monitor concentrations of credit risk. No allowance for uncollectible amounts has been established against our asset for amounts receivable from other insurance companies as none of the receivables are deemed by management to be uncollectible.
8.     Income Taxes
We file consolidated federal income tax returns that include all of our wholly-owned subsidiaries. Our income tax expense as presented in the consolidated financial statements is summarized as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Consolidated statements of operations:          
Current income taxes$57,412
 $75,568
 $116,545
$188,356
 $57,412
 $75,568
Deferred income taxes (benefits)(10,408) 41,916
 (46,504)(46,730) (10,408) 41,916
Total income tax expense included in consolidated statements of operations47,004
 117,484
 70,041
141,626
 47,004
 117,484
Stockholders' equity:          
Expense (benefit) relating to:          
Change in net unrealized investment losses74,471
 (279,860) 363,572
177,162
 74,471
 (279,860)
Share-based compensation(527) (3,649) (5,716)
 (527) (3,649)
Extinguishment of convertible debt
 
 (9,284)
Total income tax expense (benefit) included in consolidated financial statements$120,948
 $(166,025) $418,613
$318,788
 $120,948
 $(166,025)
Income tax expense in the consolidated statements of operations differed from the amount computed at the applicable statutory federal income tax rate of 35% as follows:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
Income before income taxes$130,247
 $337,314
 $196,064
$316,271
 $130,247
 $337,314
          
Income tax expense on income before income taxes$45,586
 $118,060
 $68,622
$110,695
 $45,586
 $118,060
Tax effect of:          
State income taxes2,559
 2,924
 1,145
1,961
 2,559
 2,924
Tax exempt net investment income(2,167) (3,834) (3,669)(4,288) (2,167) (3,834)
Extinguishment of convertible debt
 
 4,202
Impact of Tax Reform35,932
 
 
Other1,026
 334
 (259)(2,674) 1,026
 334
Income tax expense$47,004
 $117,484
 $70,041
$141,626
 $47,004
 $117,484
Effective tax rate36.1% 34.8% 35.7%44.8% 36.1% 34.8%
Tax Reform was enacted on December 22, 2017, reducing the statutory federal income tax rate from 35% to 21% effective January 1, 2018. The primary impact on our 2017 financial results is the reduction in the U.S. statutory tax rate from 35% to 21% on our deferred tax balances as of December 31, 2017.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Deferred income tax assets or liabilities are established for temporary differences between the financial reporting amounts and tax bases of assets and liabilities that will result in deductible or taxable amounts, respectively, in future years. The tax effects of temporary differences that give rise to the deferred tax assets and liabilities at December 31, 20162017 and 2015,2016, are as follows:
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Deferred income tax assets:      
Policy benefit reserves$2,354,786
 $2,092,731
$1,842,049
 $2,354,786
Other than temporary impairments15,681
 7,801
11,262
 15,681
Derivative instruments
 91,638
Amounts due reinsurer1,321
 
6,852
 1,321
Other policyholder funds6,474
 6,861
3,724
 6,474
Litigation settlement accrual1,709
 7,100
Deferred compensation7,963
 8,346
3,827
 7,963
Share-based compensation5,407
 5,286
3,383
 5,407
Net operating loss carryforwards3,745
 6,637
State net operating loss carryforwards3,196
 3,745
Other9,658
 8,031
10,253
 11,367
Gross deferred tax assets2,406,744
 2,234,431
1,884,546
 2,406,744
Deferred income tax liabilities:      
Deferred policy acquisition costs and deferred sales inducements(1,951,333) (1,860,722)(1,212,509) (1,951,333)
Net unrealized gains on available for sale fixed maturity and equity securities(170,925) (96,454)(220,533) (170,925)
Derivative instruments(75,405) 
(179,776) (75,405)
Amounts due reinsurer
 (9,677)
Policy benefit reserves(197,233) 
Investment income items(39,118) (32,466)(34,849) (39,118)
Other(1,385) (2,429)(1,499) (1,385)
Gross deferred tax liabilities(2,238,166) (2,001,748)(1,846,399) (2,238,166)
Net deferred income tax asset$168,578
 $232,683
$38,147
 $168,578
Included in the deferred income taxes is the expected income tax benefit attributable to unrealized losses on available for sale fixed maturity securities. There is no valuation allowance provided for the deferred income tax asset attributable to unrealized losses on available for sale fixed maturity securities. Management expects that the passage of time will result in the reversal of these unrealized losses due to the fair value increasing as these securities near maturity. We have the intent and ability to hold these securities to maturity, because we generate adequate cash flow from new business to fund all foreseeable cash flow needs and do not believe it would be necessary to liquidate these securities at a loss to meet cash flow needs.
Realization of our deferred income tax assets is more likely than not based on expectations as to our future taxable income and considering all other available evidence, both positive and negative. Therefore, no valuation allowance against deferred income tax assets has been established as of December 31, 20162017 and 2015.2016.
There were no material income tax contingencies requiring recognition in our consolidated financial statements as of December 31, 2016.2017. We are no longer subject to income tax examinations by tax authorities for years prior to 2012.2013.
At December 31, 2016,2017, we have no non-life net operating loss carryforwards remaining for federal income tax purposes.
9.     Notes and Loan Payable and Amounts Due Under Repurchase Agreements
Notes and loan payable includes the following:
    
 December 31,
 2016 2015
 (Dollars in thousands)
Senior notes due 2021   
Principal$400,000
 $400,000
Unamortized debt issue costs(5,733) (6,773)
Term loan due 2019   
Principal100,000
 
Unamortized debt issue costs(512) 
 $493,755
 $393,227
On July 17, 2013, we issued $400 million aggregate principal amount of senior unsecured notes due 2021 which bear interest at 6.625% per year and will mature on July 15, 2021. Contractual interest is payable semi-annually in arrears each January 15th and July 15th. The initial transaction fees and expenses totaling $9.0 million were capitalized as deferred financing costs and are being amortized over the term of the notes due 2021 using the effective interest method. We used $15 million of the net proceeds from the issuance to repay the entire amount outstanding under our revolving credit facility and the remainder of the net proceeds was used to pay the cash consideration portion of the convertible notes exchange offers and redemption discussed below.
In September 2010, we issued $200.0 million principal amount of 2015 notes. The 2015 notes had a coupon interest rate of 3.5% per year, matured on September 15, 2015, and were settled in cash on the maturity date. Contractual interest was payable semi-annually in arrears each March 15th and September 15th. The initial transaction fees and expenses totaling $6.8 million were capitalized as deferred financing costs and were amortized over the term of the 2015 notes using the effective interest method.
The conversion option of the 2015 notes (the "2015 notes embedded conversion derivative") was an embedded derivative that required bifurcation from the 2015 notes and was accounted for as a derivative liability, which was included in Other liabilities in our Consolidated Balance Sheets. The fair value of the 2015 notes embedded conversion derivative at the time of issuance of the 2015 notes was $37.0 million, and was recorded as the original debt discount for purposes of accounting for the debt component of the 2015 notes. This discount was amortized and recognized as interest expense using the effective interest method over the term of the 2015 notes.
In December 2009, we issued $115.8 million of contingent convertible senior notes due December 15, 2029 (the "2029 notes"), of which $15.6 million was assigned to the equity component (net of income tax of $11.0 million), and was recorded as the original debt discount for purposes of accounting for the debt component of the 2029 notes. The 2029 notes had a coupon interest rate of 5.25% per annum. Interest was payable semi-annually in arrears on June 6 and December 6 of each year.
We were required to include the dilutive effect of the 2029 notes in our diluted earnings per share calculation. Because these notes included a mandatory cash settlement feature for the principal amount, incremental dilutive shares only existed when the fair value of our common stock at the end of the reporting period exceeded the conversion price per share. The conversion premium of the 2029 notes was dilutive and the effect was included in diluted earnings per share for the year ended December 31, 2014. The 2015 notes were excluded from the dilutive effect in our diluted earnings per share calculation as they were intended to be settled only in cash.
The 2015 notes matured and were extinguished on September 15, 2015. Total consideration paid to holders of the 2015 notes at maturity was $48.2 million in cash, which included $22.4 million principal amount and $25.8 million conversion premium. See Note 5 for a discussion of the settlement of the 2015 notes embedded derivative liability.
In 2014, we extinguished $69.6 million principal amount of our 2015 notes and $36.2 million principal amount of our 2029 notes pursuant to private exchange offers with holders of our outstanding convertible debt instruments. Total consideration paid to holders of the 2015 notes consisted of $82.9 million in cash and $48.2 million in shares of our common stock (2,115,055 shares). Total consideration paid to holders of the 2029 notes consisted of $66.7 million in cash and $23.2 million in shares of our common stock (946,793 shares). Total consideration paid to the holders of the 2015 notes and 2029 notes excludes the accrued interest through the settlement date that was also paid. The carrying value of the convertible notes at extinguishment was $66.0 million and $34.6 million for the 2015 notes and the 2029 notes, respectively, and losses net of tax of $4.8 million for the 2015 notes and $2.5 million for the 2029 notes were recognized.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Also in 2014,9.     Notes and Loan Payable and Amounts Due Under Repurchase Agreements
Notes and loan payable includes the following:
    
 December 31,
 2017 2016
 (Dollars in thousands)
Senior notes due 2027   
Principal$500,000
 $
Unamortized debt issue costs(5,572) 
Unamortized discount(335) 
Senior notes due 2021   
Principal
 400,000
Unamortized debt issue costs
 (5,733)
Term loan due 2019   
Principal
 100,000
Unamortized debt issue costs
 (512)
 $494,093
 $493,755
On June 16, 2017, we issued $500 million aggregate principal amount of senior unsecured notes due 2027 which bear interest at 5.0% per year and will mature on June 15, 2027 (the “2027 Notes”). The 2027 Notes were issued at a notice of mandatory redemption of all$0.3 million discount, which is being amortized over the term of the 20292027 Notes using the effective interest method. Contractual interest is payable semi-annually in arrears each June 15th and December 15th. The initial transaction fees and costs totaling $5.8 million were capitalized as deferred financing costs and are being amortized over the term of the 2027 Notes using the effective interest method. We used the net proceeds from the issuance of the 2027 Notes to prepay our $100 million term loan (the "Term Loan") that was scheduled to mature in 2019 on June 16, 2017, and to redeem our $400 million notes that were outstanding atscheduled to mature in 2021 (the "2021 Notes") on July 17, 2017. We paid $413.3 million to redeem the time the notice was issued and amended the terms2021 Notes which included a redemption premium equal to 3.313% of the indenture governing the 2029 notes to provide the holders with the option of receiving the conversion value of their notes entirely in cash rather than cash for the principal amount and net shares for the portion of the conversion value that exceeds the principal amount. As a result of this mandatory redemption and the change in terms, $32.1$400 million principal amount of the 2029 notes was converted into $69.42021 Notes. We incurred a loss of $18.4 million in cash and $24.6 million in shares of our common stock (897,548 shares). The amendment toon the conversion terms resulted in a reclassificationredemption of the fair value of the conversion premium for the 2029 notes from equity to an embedded conversion derivative liability. The fair value of the conversion premium on the date of reclassification was $58.1 million. We applied fair value accounting to the embedded derivative liability from the date of reclassification to the dates of settlement of the conversions of the 2029 notes and recognized as expense the $3.8 million increase in the fair value of the embedded conversion derivative liability.
The debt discounts were amortized over the expected lives of the notes, which was December 15, 2014 for the 2029 notes and September 15, 2015 for the 2015 notes. The effective interest rates during the discount amortization periods were 8.9% and 11.9% on the 2015 notes and 2029 notes, respectively. The interest cost recognized in operations for the convertible notes, inclusive of the coupon and amortization of the discount and debt issue costs was $1.4 million, and $9.0 million for the years ended December 31, 2015 and 2014, respectively.2021 Notes.
On September 30, 2016, we entered into a credit agreement with six banks that provided for a $150 million unsecured revolving line of credit (the "Revolving Facility") that terminates on September 30, 2021 and a $100 million term loan (the "Term Loan") that terminateswas scheduled to terminate on September 30, 2019 and can be prepaid prior to maturitybut was repaid on June 16, 2017 without penalty. We utilized the proceeds from the Term Loan to make a contribution to the capital and surplus of our subsidiary, American Equity Life. Any proceeds from the Revolving Facility will be used to finance our general corporate purposes. Interest is paidwas payable quarterly on the Term Loan. The interest rate for all borrowings under the credit agreement is floating at a rate based on our election that will be equal to the alternate base rate (as defined in the credit agreement) plus the applicable margin or the adjusted LIBOR rate (as defined in the credit agreement) plus the applicable margin. We also pay a commitment fee based on the available unused portion of the Revolving Facility. The applicable margin and commitment fee rate are based on our credit rating and can change throughout the period of the borrowings. Based upon our current credit rating, the applicable margin is 0.75% for alternate base rate borrowings and 1.75% for adjusted LIBOR rate borrowings, and the commitment fee is 0.275%. The interest rate in effect on the Term Loan was 3.125% and 2.625% in 2017 and 2016, was 2.625%.respectively. Under this agreement, we are required to maintain a minimum risk-based capital ratio at our subsidiary, American Equity Life, of 275%, a maximum ratio of adjusted debt to total adjusted capital of 0.35, and a minimum level of statutory surplus at American Equity Life equal to the sum of 1) 80% of statutory surplus at June 30, 2016, 2) 50% of the statutory net income for each fiscal quarter ending after June 30, 2016, and 3) 50% of all capital contributed to American Equity Life after June 30, 2016. The Revolving Facility contains an accordion feature that allows us, on up to three occasions and subject to credit availability, to increase the credit facility by an additional $50 million in the aggregate. We also have the ability to extend the maturity date of the Revolving Facility by an additional one year past the initial maturity date of September 30, 2021 with the consent of the extending banks. There are currently no guarantors of the Revolving Facility, or the Term Loan, but certain of our subsidiaries must guarantee our obligations under the credit agreement if such subsidiaries guarantee other material amounts of our debt.  No amounts were outstanding under the Revolving Facility at December 31, 2016.2017. As of December 31, 2016, $575.62017, $723.2 million is unrestricted and could be distributed to shareholders and still be in compliance with all covenants under this credit agreement.
The preceding replaced a $140 million unsecured revolving line of credit agreement with five banks dated November 22, 2013 that was scheduled to terminate on November 22, 2017.
On July 17, 2013, we issued $400 million aggregate principal amount of senior unsecured notes due 2021 which bore interest at 6.625% per year and would have matured on July 15, 2021 had we not redeemed them in 2017. Contractual interest was payable semi-annually in arrears each January 15th and July 15th. The initial transaction fees and expenses totaling $9.0 million were capitalized as deferred financing costs and were being amortized over the term of the 2021 Notes using the effective interest method.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


In September 2010, we issued $200.0 million principal amount of 2015 notes (the "2015 Notes"). The 2015 Notes had a coupon interest rate of 3.5% per year, matured on September 15, 2015, and were settled in cash on the maturity date. Contractual interest was payable semi-annually in arrears each March 15th and September 15th. The initial transaction fees and expenses totaling $6.8 million were capitalized as deferred financing costs and were amortized over the term of the 2015 Notes using the effective interest method.
The conversion option of the 2015 Notes (the "2015 notes embedded conversion derivative") was an embedded derivative that required bifurcation from the 2015 notes and was accounted for as a derivative liability, which was included in Other liabilities in our Consolidated Balance Sheets. The fair value of the 2015 notes embedded conversion derivative at the time of issuance of the 2015 Notes was $37.0 million, and was recorded as the original debt discount for purposes of accounting for the debt component of the 2015 Notes. This discount was amortized and recognized as interest expense using the effective interest method over the term of the 2015 Notes.
The 2015 Notes, that had not previously been extinguished, matured and were extinguished on September 15, 2015. Total consideration paid to holders of the 2015 Notes at maturity was $48.2 million in cash, which included $22.4 million principal amount and $25.8 million conversion premium. See Note 5 for a discussion of the settlement of the 2015 notes embedded derivative liability.
As part of our investment strategy, we enter into securities repurchase agreements (short-term collateralized borrowings). The maximum amount borrowed during 2017, 2016 and 2015 and 2014 was $274.5 million, $113.0 million $40.6 million and $138.7$40.6 million, respectively. When we do borrow cash on these repurchase agreements, we pledge collateral in the form of debt securities with fair values approximately equal to the amount due and we use the cash to purchase debt securities ahead of the time we collect the cash from selling annuity policies to avoid a lag between the investment of funds and the obligation to credit interest to policyholders. We earn investment income on the securities purchased with these borrowings at a rate in excess of the cost of these borrowings. Such borrowings averaged $40.0 million, $4.5 million $0.5 million and $9.2$0.5 million for the years ended December 31, 2017, 2016 2015 and 2014,2015, respectively. The weighted average interest rate on amounts due under repurchase agreements was 0.66%0.84%, 0.39%0.66% and 0.19%0.39% for the years ended December 31, 20162017, 20152016 and 2014,2015, respectively.
10.   Subordinated Debentures
Our wholly-owned subsidiary trusts (which are not consolidated) have issued fixed rate and floating rate trust preferred securities and have used the proceeds from these offerings to purchase subordinated debentures from us. We also issued subordinated debentures to the trusts in exchange for all of the common securities of each trust. The sole assets of the trusts are the subordinated debentures and any interest accrued thereon. The interest payment dates on the subordinated debentures correspond to the distribution dates on the trust preferred securities issued by the trusts. The trust preferred securities mature simultaneously with the subordinated debentures. Our obligations under the subordinated debentures and related agreements provide a full and unconditional guarantee of payments due under the trust preferred securities. All subordinated debentures are callable by us at any time, except for the Trust II subordinated debt obligations.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Following is a summary of subordinated debt obligations to the trusts at December 31, 20162017 and 2015:2016:
December 31, December 31, 
2016 2015 Interest Rate Due Date2017 2016 Interest Rate Due Date
(Dollars in thousands) (Dollars in thousands) 
American Equity Capital Trust II$77,061
 $76,840
 5% June 1, 2047$77,298
 $77,061
 5% June 1, 2047
American Equity Capital Trust III27,840
 27,840
 *LIBOR +3.90% April 29, 203427,840
 27,840
 *LIBOR +3.90% April 29, 2034
American Equity Capital Trust IV12,372
 12,372
 *LIBOR +4.00% January 8, 203412,372
 12,372
 *LIBOR +4.00% January 8, 2034
American Equity Capital Trust VII10,830
 10,830
 *LIBOR +3.75% December 14, 203410,830
 10,830
 *LIBOR +3.75% December 14, 2034
American Equity Capital Trust VIII20,620
 20,620
 *LIBOR +3.75% December 15, 203420,620
 20,620
 *LIBOR +3.75% December 15, 2034
American Equity Capital Trust IX15,470
 15,470
 *LIBOR +3.65% June 15, 203515,470
 15,470
 *LIBOR +3.65% June 15, 2035
American Equity Capital Trust X20,620
 20,620
 *LIBOR +3.65% September 15, 203520,620
 20,620
 *LIBOR +3.65% September 15, 2035
American Equity Capital Trust XI20,620
 20,620
 *LIBOR +3.65% December 15, 203520,620
 20,620
 *LIBOR +3.65% December 15, 2035
American Equity Capital Trust XII41,238
 41,238
 *LIBOR +3.50% April 7, 203641,238
 41,238
 *LIBOR +3.50% April 7, 2036
246,671
 246,450
 246,908
 246,671
 
Unamortized debt issue costs(4,818) (4,998) (4,343) (4,818) 
$241,853
 $241,452
 $242,565
 $241,853
 
*—three month London Interbank Offered Rate
The principal amount of the subordinated debentures issued by us to American Equity Capital Trust II ("Trust II") is $100.0 million. These debentures were assigned a fair value of $74.7 million at the date of issue (based upon an effective yield-to-maturity of 6.8%). The difference between the fair value at the date of issue and the principal amount is being accreted over the life of the debentures. The trust preferred securities issued by Trust II were issued to Iowa Farm Bureau Federation, which owns more than 50% of the voting capital stock of FBL Financial Group, Inc. ("FBL"). The consideration received by Trust II in connection with the issuance of its trust preferred securities consisted of fixed income securities of equal value which were issued by FBL.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


11.   Retirement and Share-based Compensation Plans
We have adopted a contributory defined contribution plan which is qualified under Section 401(k) of the Internal Revenue Code. The plan covers substantially all of our full-time employees subject to minimum eligibility requirements. Employees can contribute a percentage of their annual salary (up to a maximum annual contribution of $18,000 in 2017, 2016 $18,000 in 2015 and $17,500 in 2014)2015) to the plan. We contribute an additional amount, subject to limitations, based on the voluntary contribution of the employee. Further, the plan provides for additional employer contributions based on the discretion of the Board of Directors. Plan contributions charged to expense were $1.3$1.4 million, $0.4$1.3 million and $0.4 million for the years ended December 31, 2017, 2016 2015 and 2014,2015, respectively.
The following table summarizes compensation expense recognized for employees directors and consultantsdirectors as a result of share-based compensation:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands)(Dollars in thousands)
ESOP$2,522
 $2,604
 $2,486
$1,474
 $2,522
 $2,604
Employee Incentive Plans1,207
 1,911
 1,306
2,155
 1,207
 1,911
Director Equity and Incentive Plan and Stock Option Plan685
 613
 789
812
 685
 613
$4,414
 $5,128
 $4,581
$4,441
 $4,414
 $5,128
The principal purpose of the American Equity Investment Employee Stock Ownership Plan ("ESOP") is to provide each eligible employee with an equity interest in us. Employees become eligible once they have completed a minimum of six months of service. Employees become 100% vested after two years of service. Our contribution to the ESOP is determined by the Board of Directors.
In 2016, we adopted the 2016 Employee Incentive Plan which authorized the issuance of up to 2,500,000 shares of our Common stock in the form of grants of options, stock appreciation rights, restricted stock awards and restricted stock units. At December 31, 2016,2017, we had 2,226,2562,101,954 shares of common stock available for future grant under the 2016 Employee Incentive Plan. The 2009 Employee Incentive Plan, which expired in June of 2014, authorized the issuance of up to 2,500,000 shares of our common stock in the form of grants of options, stock appreciation rights, restricted stock awards and restricted stock units. All options granted under this plan had six or ten year terms and a three year vesting period after which they become fully exercisable immediately.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


We have a long-term performance incentive plan under which certain members of our senior management team are granted restricted stock units pursuant to the 2016 Employee Incentive Plan or the 2009 Employee Incentive Plan. During 20162017, 20152016 and 2014,2015, we granted 208,56584,476, 60,947208,565 and 54,71860,947 restricted stock units under these plans, respectively. VestingFor the 2017 grant, vesting is tied to threshold, target and maximum performance goals for the three year period ending December 31, 2019. Fifty percent of the restricted stock units will vest if we meet threshold goals, 100% of the restricted stock units will vest if we meet target performance goals and 150% of the restricted stock units will vest if we meet maximum performance goals. For the 2016 and 2015 grants, vesting is tied to threshold and target performance goals for the three year periodperiods ending December 31, 2018 December 31, 2017 and December 31, 2016,2017, respectively. Fifty percent of the restricted stock units will vest if we meet threshold goals and 100% of the restricted stock units will vest if we meet target performance goals. Compensation expense is recognized over the three year vesting period based on the likelihood of meeting threshold and target goals. Restricted stock units that ultimately vest are payable in an equal number of shares of our common stock. Restricted stock units are accounted for as equity awards and the estimated fair value of restricted stock units is based upon the closing price of our common stock on the date of grant. During 2016, the 2015 restricted stock unit award agreements were amended and the restricted stock units granted during 2015 will be settled in cash if earned.cash. This amendment was due to an administrative issue related to the grant, which was made under an expired equity plan.
During 2017, 2016 2015 and 2014,2015, we issued 39,826, 43,373 25,784 and 18,239 (43,373, 23,062 and 14,869 shares were restricted stock),25,784, respectively, shares of restricted common stock under the 2016 Employee Incentive Plan or the 2009 Employee Incentive Plan to certain employees. These shares will generally vest on the date three years following the grant date provided the participant remains employed with us. The 2017 grant includes 6,727 shares that will vest on the date one year following the grant date provided the participant remains employed with us. Compensation expense is recognized over the one year or three year vesting period. Shares vest immediately for participants over 65 years of age with 10 years of service with us, and compensation expense under this plan for these participants was recognized upon approval of the incentive award by the compensation committee. During 2016, the shares of restricted stock granted during 2015 were canceled due to an administrative issue related to the grant, which was made under an expired equity plan. During 2016, we issued 21,806 shares of common stock to the employees impacted by the cancellation taking into consideration the canceled 2015 grants.
The 2013 Director Equity and Incentive Plan authorizes the grant of options, stock appreciation rights, restricted stock awards and restricted stock units convertible into or based upon our common stock of up to 250,000 shares to our Directors. During 2017, 2016 2015 and 2014,2015, we issued 33,000, 47,500 22,000 and 24,00022,000 shares of common stock, respectively, all of which are restricted stock, and which vest the earlier of the next annual meeting date or one year from the grant date provided the individual remains a Director during that time period. At 2016,2017, we had 116,50083,500 shares of common stock available for future grant under the 2013 Director and Equity Incentive Plan.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Our 1996 Stock Option Plan, 2000 Employee Stock Option Plan, 2000 Directors Stock Option Plan and 2011 Director Stock Option Plan authorized grants of options to officers, directors and employees for an aggregate of up to 3,475,000 shares of our common stock. All options granted under these plans have ten year terms and a six month or three year vesting period after which they become fully exercisable immediately. At December 31, 2016,2017, we had 18,000 shares of common stock available for future grant under the 2011 Director Stock Option Plan.
During 2014, we established the 2014 Independent Insurance Agent Restricted Stock and Restricted Stock Unit Plan, which was amended during 2016. Under the amended plan, agents of American Equity Life may receive grants of restricted stock and restricted stock units based upon their individual sales. The plan authorizes grants of up to 1,800,000 shares of our common stock. We recognize commission expense and an increase to additional paid-in capital as share-based compensation equal to the fair value of the restricted stock and restricted stock units as they are earned.
In January 2017, American Equity Life's agents were granted 363,624 restricted stock units based on their production during 2016, and we recorded commission expense (capitalized as deferred policy acquisition costs) of $2.6 million in 2016. In January 2018, agents vested in 138,820 restricted stock units granted in January 2017 based on their continued service as an independent agent and their 2017 individual sales of our products, and for which we recorded commission expense (capitalized as deferred policy acquisition costs) of $1.3 million in 2017.
In January 2016, American Equity Life's agents were granted 650,683 restricted stock units based on their production during 2015, and we recorded commission expense (capitalized as deferred policy acquisition costs) of $3.5 million in 2015. In January 2017, agents vested in 246,532 restricted stock units granted in January 2016 based on their continued service as an independent agent and their 2016 individual sales of our products, and for which we recorded commission expense (capitalized as deferred policy acquisition costs) of $1.7 million in 2016. In January 2018, agents vested in 100,586 restricted stock units granted in January 2016 based on their continued service as an independent agent and their 2017 individual sales of our products, and for which we recorded commission expense (capitalized as deferred policy acquisition costs) of $2.2 million in 2017. 20% of the restricted stock units will vest one year from the grant date if the agent is in good standing with American Equity Life at that date. The remaining 80% of the restricted stock units granted to retirement eligible individuals will vest over a fourthree year period if the agent remains in good standing with American Equity Life. The remaining 80% of the restricted stock units granted to non-retirement eligible individuals will vest based on the agent's individual sales and continued service as an independent agent over a period of time not to exceed five years.
In January 2015, American Equity Life's agents were granted 27,985 shares of restricted stock and 221,489 restricted stock units based on their production during 2014, and we recorded commission expense (capitalized as deferred policy acquisition costs) of $1.9 million in 2014. In January 2016, agents vested in 85,104 restricted stock units granted in January of 2015 based on their continued service as an independent agent and their 2015 individual sales of our products, and for which we recorded commission expense (capitalized as deferred policy acquisition costs) of $1.3 million in 2015. In January 2017, agents vested in 36,609 restricted stock units granted in January 2015 based on their continued service as an independent agent and their 2016 individual sales of our products, and for which we recorded commission expense (capitalized as deferred policy acquisition costs) of $0.6 million in 2016. In January 2018, agents vested in 32,815 restricted stock units granted in January 2015 based on their continued service as an independent agent and their 2017 individual sales of our products, and for which we recorded commission expense (capitalized as deferred policy acquisition costs) of $0.8 million in 2017. The restricted stock was granted to retirement eligible individuals and vested immediately upon grant. 20% of the restricted stock units vested one year from the grant date if the agent was in good standing with American Equity Life at that date. The remaining 80% of the restricted stock units granted will vest based on the agent's individual sales and continued service as an independent agent over a period of time not to exceed five years.
During 2007, 2010 and 2012 we established Independent Insurance Agent Stock Option plans. Under these plans, agents of American Equity Life received grants of options to acquire shares of our common stock based upon their individual sales. The plans authorize grants of options to agents for an aggregate of up to 8,000,000 shares of our common stock. We recognize commission expense and an increase to additional paid-in capital as share-based compensation equal to the fair value of the options as they are earned.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Changes in the number of stock options outstanding during the years ended December 31, 2017, 2016 2015 and 20142015 are as follows:
Number of
Shares
 
Weighted-Average
Exercise Price
per Share
 
Total
Exercise
Price
Number of
Shares
 
Weighted-Average
Exercise Price
per Share
 
Total
Exercise
Price
(Dollars in thousands, except per share data)(Dollars in thousands, except per share data)
Outstanding at January 1, 20143,976,725
 $10.86
 $43,171
Granted1,277,650
 24.79
 31,673
Canceled(35,400) 11.64
 (412)
Exercised(1,174,800) 11.64
 (13,672)
Outstanding at December 31, 20144,044,175
 15.02
 60,760
Outstanding at January 1, 20154,044,175
 $15.02
 $60,760
Granted
 
 

 
 
Canceled(47,300) 10.54
 (499)(47,300) 10.54
 (499)
Exercised(552,884) 14.51
 (8,021)(552,884) 14.51
 (8,021)
Outstanding at December 31, 20153,443,991
 15.17
 52,240
3,443,991
 15.17
 52,240
Granted
 
 

 
 
Canceled(24,700) 14.83
 (366)(24,700) 14.83
 (366)
Exercised(500,345) 9.97
 (4,989)(500,345) 9.97
 (4,989)
Outstanding at December 31, 20162,918,946
 16.06
 $46,885
2,918,946
 16.06
 46,885
Granted
 
 
Canceled(57,200) 13.66
 (781)
Exercised(881,481) 15.90
 (14,020)
Outstanding at December 31, 20171,980,265
 16.20
 $32,084
The following table summarizes information about stock options outstanding at December 31, 2016:2017:
 Stock Options Outstanding Stock Options VestedStock Options Outstanding and Vested
Range of Exercise Prices 
Number of
Awards
 
Remaining
Life (yrs)
 
Weighted-Average
Exercise Price
Per Share
 
Number of
Awards
 
Remaining
Life (yrs)
 
Weighted-Average
Exercise Price
Per Share
Number of
Awards
 
Remaining
Life (yrs)
 
Weighted-Average
Exercise Price
Per Share
$5.07 - $8.02 248,225
 1.74 $7.16
 248,225
 1.74 $7.16
182,500
 1.36 $6.85
$9.27 - $11.35 752,150
 2.66 10.19
 752,150
 2.66 10.19
575,055
 1.75 10.15
$12.04 - $24.79 1,918,571
 3.24 19.52
 1,918,571
 3.24 19.52
1,222,710
 2.53 20.44
$5.07 - $24.79 2,918,946
 2.97 16.06
 2,918,946
 2.97 16.06
1,980,265
 2.20 16.20
The aggregate intrinsic value for stock options outstanding and vested awards was $21.3$28.8 million and $21.3 million, respectively, at December 31, 2016.2017. For the years ended December 31, 2017, 2016 2015 and 2014,2015, the total intrinsic value of options exercised by officers, directors and employees was $1.5 million, $4.0 million $1.4 million and $5.4$1.4 million, respectively. Intrinsic value for stock options is calculated as the difference between the exercise price of the underlying awards and the price of our common stock as of the reporting date. Cash received from stock options exercised for the years ended December 31, 2017, 2016 and 2015 and 2014 was $14.0 million, $5.0 million $8.1 million and $13.7 million, respectively. The tax benefit realized for the tax deduction from the exercise of stock options by officers, directors, employees and agents for the years ended December 31, 2016, 2015 and 2014, was $0.0 million, $0.0 million and $1.0$8.1 million, respectively.
We have deferred compensation arrangements with certain officers, directors, and consultants, whereby these individuals agreed to take our common stock at a future date in lieu of cash payments at the time of service. The common stock is to be issued in conjunction with a "trigger event," as that term is defined in the individual agreements. At both December 31, 20162017 and 2015,2016, these individuals have earned, and we have reserved for future issuance, 364,000 and 366,072 shares of common stock, respectively, pursuant to these arrangements. No deferred compensation arrangements were in effect during 2017 or 2016. We incurred expense of $102,000 and $127,000 for the yearsyear ended December 31, 2015, and 2014, respectively, under one of these arrangements.
We have deferred compensation agreements with certain officers whereby these individuals may deferhave deferred certain salary and bonus compensation which is deposited into the American Equity Officer Rabbi Trust (Officer Rabbi Trust). The amounts deferred for certain employees are invested in assets at the direction of the employee. The assets of the Officer Rabbi Trust are included in our assets and a corresponding deferred compensation liability is recorded. The deferred compensation liability is recorded at the fair market value of the assets in the Officer Rabbi Trust with the change in fair value included as a component of compensation expense. The deferred compensation liability related to these agreements was $3.5$2.0 million and $3.7$3.5 million at December 31, 20162017 and 2015,2016, respectively. The Officer Rabbi Trust held 102,93234,539 shares and 103,251102,932 shares of our common stock at December 31, 20162017 and 2015,2016, respectively, which are treated as treasury shares.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


During 1997, we established the American Equity Investment NMO Deferred Compensation Plan ("NMO Deferred Compensation Plan") whereby agents could earn common stock in addition to their normal commissions. The NMO Deferred Compensation Plan was effective until December 31, 2006 at which time it was suspended. Awards were calculated using formulas determined annually by our Board of Directors. These shares are being distributed at the end of the vesting and deferral period of nine years. We recognize commission expense and an increase to additional paid-in capital as share-based compensation when the awards vest. All outstanding shares issued under this plan were fully vested at December 31, 2010. At December 31, 2016 and 2015, the total number of undistributed vested shares under the NMO Deferred Compensation Plan was 0 and 223,454, respectively. These shares are included in the computation of earnings per share and earnings per share—assuming dilution.
We have a Rabbi Trust, the NMO Deferred Compensation Trust (the "NMO Trust"), which has purchased shares of our common stock to fund the amount of vested shares under the NMO Deferred Compensation Plan. The common stock held in the NMO Trust is treated as treasury stock. The NMO Trust distributed 215,273, 313,108 and 349,568 shares during 2016, 2015 and 2014, respectively. The number of shares held by the NMO Trust at December 31, 2016 and 2015, was 15,058 and 230,012, respectively.
12.   Statutory Financial Information and Dividend Restrictions
Statutory accounting practices prescribed or permitted by regulatory authorities for our life insurance subsidiaries differ from GAAP. Net income for our primary life insurance subsidiary as determined in accordance with statutory accounting practices was as follows:
 Year Ended December 31,
 2016 2015 2014
 (Dollars in thousands)
American Equity Life$75,035
 $131,452
 $340,000
 Year Ended December 31,
 2017 2016 2015
 (Dollars in thousands)
American Equity Life$375,900
 $75,035
 $131,452
Statutory capital and surplus for our primary life insurance subsidiary was as follows:
 December 31,
 2016 2015
 (Dollars in thousands)
American Equity Life$2,726,664
 $2,415,419
 December 31,
 2017 2016
 (Dollars in thousands)
American Equity Life$3,005,654
 $2,726,664
American Equity Life is domiciled in the state of Iowa and is regulated by the Iowa Insurance Division. Life insurance companies are subject to the National Association of Insurance Commissioners ("NAIC") risk-based capital (RBC) requirements which are intended to be used by insurance regulators as an early warning tool to identify deteriorating or weakly capitalized insurance companies for the purpose of initiating regulatory action. Calculations using the NAIC formula indicated that American Equity Life's ratio of total adjusted capital to the highest level of required capital at which regulatory action might be initiated (Company Action Level) is as follows:
December 31,December 31,
2016 20152017 2016
(Dollars in thousands)(Dollars in thousands)
Total adjusted capital$2,933,193
 $2,593,472
$3,260,328
 $2,933,193
Company Action Level RBC857,321
 771,293
861,419
 857,321
Ratio of adjusted capital to Company Action Level RBC342% 336%378% 342%
Prior approval of regulatory authorities is required for the payment of dividends to the parent company by American Equity Life which exceed an annual limitation. American Equity Life may pay dividends without prior approval, unless such payments, together with all other such payments within the preceding twelve months, exceed the greater of (1) net gain from operations before net realized capital gains/losses for the preceding calendar year or, (2) 10% of the American Equity Life's surplus at the preceding year-end. The amount of dividends permitted to be paid by American Equity Life to its parent company without prior approval of regulatory authorities is $272.7$377.1 million as of December 31, 2016.2017. No dividends were paid by any of our insurance subsidiaries for any of the years presented in these financial statements.
The Parent Company relies on its subsidiaries for cash flow, which has primarily been in the form of investment management fees and/or dividends.fees. Retained earnings in our consolidated financial statements primarily represent undistributed earnings of American Equity Life. As such, our ability to pay dividends is limited by the regulatory restriction placed upon insurance companies as described above. In addition, American Equity Life retains funds to allow for sufficient capital for growth.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


13.   Commitments and Contingencies
We lease our home office space and certain equipment under various operating leases. Rent expense for the years ended December 31, 2017, 2016 and 2015 and 2014 totaled $2.8$2.9 million, $2.7$2.8 million and $2.7 million, respectively. At December 31, 2016,2017, the aggregate future minimum lease payments are $16.9$15.4 million. The following represents payments due by period for operating lease obligations as of December 31, 20162017 (dollars in thousands):
Year Ending December 31:  
2017$1,890
20181,915
$1,998
20191,898
1,981
20201,950
2,033
20211,754
1,837
2022 and thereafter7,464
20221,680
2023 and thereafter5,845

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


We are occasionally involved in litigation, both as a defendant and as a plaintiff. In addition, state regulatory bodies, such as state insurance departments, the SEC, FINRA, the Department of Labor, and other regulatory bodies regularly make inquiries and conduct examinations or investigations concerning our compliance with, among other things, insurance laws, securities laws, the Employee Retirement Income Security Act of 1974, as amended, and laws governing the activities of broker/dealers.
In accordance with applicable accounting guidelines, we establish an accrued liability for litigation and regulatory matters when those matters present loss contingencies that are both probable and estimable. As a litigation or regulatory matter is developing we, in conjunction with outside counsel, evaluate on an ongoing basis whether the matter presents a loss contingency that meets conditions indicating the need for accrual and/or disclosure, and if not the matter will continue to be monitored for further developments. If and when the loss contingency related to litigation or regulatory matters is deemed to be both probable and estimable, we will establish an accrued liability with respect to that matter and will continue to monitor the matter for further developments that may affect the amount of the accrued liability.
Companies in the life insurance and annuity business have faced litigation, including class action lawsuits, alleging improper product design, improper sales practices and similar claims. We were a defendant in a purported class action, McCormack, et al. v. American Equity Investment Life Insurance Company, et al., in the United States District Court for the Central District of California, Western Division and Anagnostis v. American Equity, et al., coordinated in the Central District, entitled, In Re: American Equity Annuity Practices and Sales Litigation (complaint filed September 7, 2005) (the "Los Angeles Case"), involving allegations of improper sales practices and similar claims.
The Los Angeles Case was a consolidated action involving several lawsuits filed by putative class members seeking class action status for a national class of purchasers of annuities issued by us. On July 30, 2013, the parties entered into a settlement agreement and stipulated to certification of the case as a class action for settlement purposes only. A class member filed an appeal with the United States Court of Appeals for the Ninth Circuit on February 28, 2014. On February 17, 2016, the United States Court of Appeals for the Ninth Circuit affirmed the terms of the settlement agreement and on April 6, 2016, the class member’s subsequent request for a rehearing en banc was denied. All remaining opportunities for appeal have passed.
During the third quarter of 2016, we reduced the litigation liability related to the Los Angeles Case by $6.4 million as we paid out $1.8 million in partial settlement, reclassified $1.8 million from the litigation liability to policy benefit reserves and other policy funds and contract claims and released $2.8 million of the litigation liability as additional information became available concerning the nature and magnitude of claims based on the terms of the settlement. During the fourth quarter of 2016, we paid out an additional $4.1 million and reduced the litigation liability by $4.1 million. After this activity, we estimate our litigation liability in this matter to be $0.6 million based on our best estimate of probable loss. There can be no assurance that any other pending or future litigation will not have a material adverse effect on our business, financial condition, or results of operations.
In addition to our commitments to fund mortgage loans, we have unfunded commitments at December 31, 20162017 to limited partnerships of $48.4$47.9 million and to secured bank loans of $34.3$11.2 million.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


14.   Earnings Per Share and Stockholders' Equity
Earnings Per Share
The following table sets forth the computation of earnings per common share and earnings per common share—assuming dilution:
Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
(Dollars in thousands, except per share data)(Dollars in thousands, except per share data)
Numerator:          
Net income—numerator for earnings per common share$83,243
 $219,830
 $126,023
$174,645
 $83,243
 $219,830
          
Denominator:
          
Weighted average common shares outstanding (1)84,793,151
 78,936,828
 74,431,087
88,982,442
 84,793,151
 78,936,828
Effect of dilutive securities:          
Convertible senior notes
 
 2,657,158
Equity forward sale agreements
 67,575
 

 
 67,575
2015 warrants15,136
 759,723
 1,559,646

 15,136
 759,723
Stock options and deferred compensation agreements456,236
 1,040,922
 1,178,783
945,612
 456,236
 1,040,922
Restricted stock and restricted stock units340,646
 155,520
 66,926
382,954
 340,646
 155,520
Denominator for earnings per common share—assuming dilution85,605,169
 80,960,568
 79,893,600
90,311,008
 85,605,169
 80,960,568
          
Earnings per common share$0.98
 $2.78
 $1.69
$1.96
 $0.98
 $2.78
Earnings per common share—assuming dilution$0.97
 $2.72
 $1.58
Earnings per common share - assuming dilution$1.93
 $0.97
 $2.72
(1)Weighted average common shares outstanding include shares vested under the NMO Deferred Compensation Plan and exclude unallocated shares held by the ESOP.Plan.
Options to purchase shares of our common stock that were outstanding during the respective periods indicated but were not included in the computation of diluted earnings per share because the options' exercise price was greater than the average market price of the common shares are as follows:
Period 
Number of
Shares
 
Range of
Exercise Prices
 
Number of
Shares
 
Range of
Exercise Prices
   Minimum Maximum   Minimum Maximum
Year ended December 31, 2017  $— $—
Year ended December 31, 2016 1,054,091 $24.79 $24.79 1,054,091 $24.79 $24.79
Year ended December 31, 2015 1,061,541 $24.79 $24.79 1,061,541 $24.79 $24.79
Year ended December 31, 2014 1,215,450 $24.79 $24.79

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


Stockholders' Equity
In August 2015, we completed an underwritten public offering of 8,600,000 shares of our common stock at a public offering price of $25.25 per share, of which 4,300,000 shares were subject to a forward sale agreement. The underwriters exercised in full their option to purchase 1,290,000 additional shares of common stock, which were subject to a separate forward sale agreement. We settled the forward sale agreements on August 1, 2016 and issued 5,590,000 shares of our common stock and received $134.7 million in net proceeds. We contributed the net proceeds from the settlement to the capital and surplus of American Equity Life.
The forward sale agreements had no initial fair value since they were entered into at the then market price of the common stock. The forward sale agreements were equity instruments and qualified for an exception from derivative and fair value accounting.

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AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)


15.   Quarterly Financial Information (Unaudited)
Unaudited quarterly results of operations are summarized below.
Quarter EndedQuarter Ended
March 31, June 30, September 30, December 31,March 31, June 30, September 30, December 31,
(Dollars in thousands, except per share data)(Dollars in thousands, except per share data)
2017       
Premiums and product charges$52,974
 $56,323
 $60,500
 $64,925
Net investment income485,597
 493,489
 500,202
 512,709
Change in fair value of derivatives386,533
 266,820
 362,525
 661,993
Net realized gains on investments, excluding OTTI losses2,338
 3,873
 1,579
 2,719
Net OTTI losses recognized in operations(141) (949) (464) (3,076)
Loss on extinguishment of debt
 (428) (18,389) 
Total revenues927,301
 819,128
 905,953
 1,239,270
Net income53,939
 26,946
 56,957
 36,803
Earnings per common share0.61
 0.30
 0.64
 0.41
Earnings per common share - assuming dilution0.60
 0.30
 0.63
 0.41
       
2016              
Premiums and product charges$43,850
 $52,582
 $60,406
 $60,508
$43,850
 $52,582
 $60,406
 $60,508
Net investment income450,826
 459,830
 463,583
 475,633
450,826
 459,830
 463,583
 475,633
Change in fair value of derivatives(74,065) 39,099
 103,794
 95,391
(74,065) 39,099
 103,794
 95,391
Net realized gains (losses) on investments, excluding OTTI losses2,687
 2,737
 5,256
 844
Net realized gains on investments, excluding OTTI losses2,687
 2,737
 5,256
 844
Net OTTI losses recognized in operations(5,694) (4,446) (2,979) (9,560)(5,694) (4,446) (2,979) (9,560)
Total revenues417,604
 549,802
 630,060
 622,816
417,604
 549,802
 630,060
 622,816
Net income (loss)(44,841) 14,708
 (7,420) 120,796
(44,841) 14,708
 (7,420) 120,796
Earnings (loss) per common share(0.55) 0.18
 (0.09) 1.37
(0.55) 0.18
 (0.09) 1.37
Earnings (loss) per common share—assuming dilution(0.55) 0.18
 (0.09) 1.35
       
2015       
Premiums and product charges$35,679
 $42,446
 $46,310
 $47,781
Net investment income399,669
 418,176
 436,085
 438,262
Change in fair value of derivatives(31,100) (23,024) (351,360) 69,338
Net realized gains (losses) on investments, excluding OTTI losses4,879
 4,324
 1,159
 (151)
Net OTTI losses recognized in operations(132) (828) (5,229) (13,347)
Total revenues408,995
 441,094
 126,965
 541,883
Net income5,903
 82,845
 97,306
 33,776
Earnings per common share0.08
 1.07
 1.22
 0.41
Earnings per common share—assuming dilution0.07
 1.05
 1.19
 0.40
Earnings (loss) per common share - assuming dilution(0.55) 0.18
 (0.09) 1.35
Earnings (loss) per common share for each quarter is computed independently of earnings (loss) per common share for the year. As a result, the sum of the quarterly earnings (loss) per common share amounts may not equal the earnings (loss) per common share for the year.
The differences between the change in fair value of derivatives for each quarter primarily correspond to the performance of the indices upon which our call options are based. The comparability of net income (loss) is impacted by the application of fair value accounting to our fixed index annuity business is as follows:
Quarter EndedQuarter Ended
March 31, June 30, September 30, December 31,March 31, June 30, September 30, December 31,
(Dollars in thousands)(Dollars in thousands)
2017$7,069
 $37,075
 $30,806
 $3,518
2016$62,822
 $34,215
 $6,054
 $(66,618)62,822
 34,215
 6,054
 (66,618)
201542,849
 (28,596) (53,716) 11,091


Schedule I—Summary of Investments—
Other Than Investments in Related Parties

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

December 31, 20162017

Column A Column B Column C Column D Column B Column C Column D
Type of Investment 
Amortized
Cost (1)
 
Fair
Value
 
Amount at
which shown
in the balance
sheet
 
Amortized
Cost (1)
 
Fair
Value
 
Amount at
which shown
in the balance
sheet
 (Dollars in thousands) (Dollars in thousands)
Fixed maturity securities:            
Available for sale:            
United States Government full faith and credit $11,864
 $11,805
 $11,805
 $11,861
 $11,876
 $11,876
United States Government sponsored agencies 1,368,340
 1,344,787
 1,344,787
 1,308,290
 1,305,017
 1,305,017
United States municipalities, states and territories 3,626,395
 3,926,950
 3,926,950
 3,804,360
 4,166,812
 4,166,812
Foreign government obligations 224,588
 232,233
 232,233
 228,214
 239,360
 239,360
Corporate securities 26,338,214
 27,118,526
 27,118,526
 28,127,653
 29,878,971
 29,878,971
Residential mortgage backed securities 1,166,944
 1,254,835
 1,254,835
 1,028,484
 1,105,567
 1,105,567
Commercial mortgage backed securities 5,422,255
 5,365,235
 5,365,235
 5,531,922
 5,544,850
 5,544,850
Other asset backed securities 1,795,355
 1,806,123
 1,806,123
 3,075,975
 3,120,536
 3,120,536
 39,953,955
 41,060,494
 41,060,494
 43,116,759
 45,372,989
 45,372,989
Held for investment:   
 
   
 
Corporate security 76,825
 68,766
 76,825
 77,041
 76,460
 77,041
Total fixed maturity securities 40,030,780
 41,129,260
 41,137,319
 43,193,800
 45,449,449
 45,450,030
Mortgage loans on real estate 2,480,956
 2,522,035
 2,480,956
 2,665,531
 2,670,037
 2,665,531
Derivative instruments 313,729
 830,519
 830,519
 373,244
 1,568,380
 1,568,380
Other investments 308,296
   308,774
 616,764
   616,764
Total investments $43,133,761
   $44,757,568
 $46,849,339
   $50,300,705
(1)On the basis of cost adjusted for other than temporary impairments, repayments and amortization of premiums and accrual of discounts for fixed maturity securities and short-term investments, original cost for derivative instruments and unpaid principal balance less allowance for credit losses for mortgage loans.

See accompanying Report of Independent Registered Public Accounting Firm.

Schedule II—Condensed Financial Information of Registrant
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY (PARENT COMPANY)
Condensed Balance Sheets
(Dollars in thousands)



December 31,December 31,
2016 20152017 2016
Assets      
Cash and cash equivalents$36,394
 $38,903
$22,486
 $36,394
Equity securities of subsidiary trusts7,422
 7,415
7,429
 7,422
Receivable from subsidiaries182
 207
166
 182
Deferred income taxes9,528
 11,645
7,945
 9,528
Federal income tax recoverable, including amount from subsidiaries
 7,747
1,059
 
Other assets2,540
 2,270
1,566
 2,540
56,066
 68,187
40,651
 56,066
Investment in and advances to subsidiaries2,992,217
 2,526,972
3,550,405
 2,992,217
Total assets$3,048,283
 $2,595,159
$3,591,056
 $3,048,283
   
��   
Liabilities and Stockholders' Equity      
Liabilities:      
Notes and loan payable$493,755
 $393,227
$494,093
 $493,755
Subordinated debentures payable to subsidiary trusts241,853
 241,452
242,565
 241,853
Federal income tax payable3,614
 

 3,614
Other liabilities17,466
 15,945
4,241
 17,466
Total liabilities756,688
 650,624
740,899
 756,688
Stockholders' equity:      
Common stock88,001
 81,354
89,331
 88,001
Additional paid-in capital770,344
 630,367
791,446
 770,344
Accumulated other comprehensive income339,966
 201,663
724,599
 339,966
Retained earnings1,093,284
 1,031,151
1,244,781
 1,093,284
Total stockholders' equity2,291,595
 1,944,535
2,850,157
 2,291,595
Total liabilities and stockholders' equity$3,048,283
 $2,595,159
$3,591,056
 $3,048,283

See accompanying note to condensed financial statements.
See accompanying Report of Independent Registered Public Accounting Firm.

Schedule II—Condensed Financial Information of Registrant (Continued)
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY (PARENT COMPANY)
Condensed Statements of Operations
(Dollars in thousands)



Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Revenues:          
Net investment income$78
 $62
 $130
$492
 $78
 $62
Dividends from subsidiary trusts384
 363
 360
410
 384
 363
Investment advisory fees75,706
 65,957
 58,044
83,941
 75,706
 65,957
Surplus note interest from subsidiary4,080
 4,080
 4,080
4,080
 4,080
 4,080
Change in fair value of derivatives(810) (8,225) (17,122)(412) (810) (8,225)
Loss on extinguishment of debt
 
 (12,502)(18,817) 
 
Total revenues79,438
 62,237
 32,990
69,694
 79,438
 62,237
     
Expenses:          
Change in fair value of embedded derivatives
 (4,516) (15,227)
 
 (4,516)
Interest expense on notes and loan payable28,248
 28,849
 36,370
30,368
 28,248
 28,849
Interest expense on subordinated debentures issued to subsidiary trusts12,958
 12,239
 12,122
14,124
 12,958
 12,239
Other operating costs and expenses8,551
 8,195
 7,928
9,234
 8,551
 8,195
Total expenses49,757
 44,767
 41,193
53,726
 49,757
 44,767
Income (loss) before income taxes and equity in undistributed income of subsidiaries29,681
 17,470
 (8,203)
Income before income taxes and equity in undistributed income of subsidiaries15,968
 29,681
 17,470
Income tax expense12,073
 7,338
 664
6,895
 12,073
 7,338
Income (loss) before equity in undistributed income of subsidiaries17,608
 10,132
 (8,867)
Income before equity in undistributed income of subsidiaries9,073
 17,608
 10,132
Equity in undistributed income of subsidiaries65,635
 209,698
 134,890
165,572
 65,635
 209,698
Net income$83,243
 $219,830
 $126,023
$174,645
 $83,243
 $219,830

See accompanying note to condensed financial statements.
See accompanying Report of Independent Registered Public Accounting Firm.

Schedule II—Condensed Financial Information of Registrant (Continued)
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY (PARENT COMPANY)
Condensed Statements of Cash Flows
(Dollars in thousands)

Year Ended December 31,Year Ended December 31,
2016 2015 20142017 2016 2015
Operating activities          
Net income$83,243
 $219,830
 $126,023
$174,645
 $83,243
 $219,830
Adjustments to reconcile net income to net cash provided by operating activities:          
Change in fair value of 2015 notes embedded conversion derivative
 (4,516) (15,227)
 
 (4,516)
Provision for depreciation and amortization1,946
 1,613
 2,081
1,610
 1,946
 1,613
Accrual of discount on equity security(7) (6) (6)(7) (7) (6)
Equity in undistributed income of subsidiaries(65,635) (209,698) (134,890)(165,572) (65,635) (209,698)
Accrual of discount on contingent convertible notes
 698
 4,417

 
 698
Change in fair value of derivatives(698) 6,377
 15,619
(657) (698) 6,377
Loss on extinguishment of debt
 
 12,502
18,817
 
 
Accrual of discount on debenture issued to subsidiary trust221
 207
 193
236
 221
 207
Share-based compensation818
 1,026
 1,141
951
 818
 1,026
ESOP compensation
 
 82
Deferred income taxes2,117
 8,967
 6,439
1,583
 2,117
 8,967
Other
 
 (2,235)
Changes in operating assets and liabilities:          
Receivable from subsidiaries(125) 93
 2,208
16
 (125) 93
Federal income tax recoverable11,361
 2,683
 1,121
Federal income tax recoverable/payable(4,673) 11,361
 2,683
Other assets(326) (4) 378
158
 (326) (4)
Other liabilities2,546
 (1,664) (7,256)(12,427) 2,546
 (1,664)
Net cash provided by operating activities35,461
 25,606
 12,590
14,680
 35,461
 25,606
          
Investing activities          
Capital contributions to subsidiaries$(255,000) $(120,000) $
$
 $(255,000) $(120,000)
Purchases of property, plant and equipment(54) 
 
(45) (54) 
Net cash used in investing activities(255,054) (120,000) 
(45) (255,054) (120,000)
          
Financing activities          
Financing fees incurred and deferred$(1,456) $
 $(100)$(5,817) $(1,456) $
Repayments of notes payable
 (48,152) (219,094)
Repayment of notes payable(413,252) 
 (48,152)
Repayment of loan payable(100,000) 
 
Proceeds from issuance of notes payable499,650
 
 
Proceeds from issuance of loan payable
 100,000
 
Proceeds from issuance of common stock14,028
 139,654
 112,481
Net proceeds from settlement of notes hedges and warrants
 25,775
 16,558

 
 25,775
Proceeds from issuance of debt100,000
 
 
Excess tax benefits realized from share-based compensation plans
 
 184
Proceeds from issuance of common stock139,654
 112,481
 13,681
Dividends paid(21,114) (17,946) (15,221)(23,152) (21,114) (17,946)
Net cash provided by (used in) financing activities217,084
 72,158
 (203,992)(28,543) 217,084
 72,158
Decrease in cash and cash equivalents(2,509) (22,236) (191,402)(13,908) (2,509) (22,236)
Cash and cash equivalents at beginning of year38,903
 61,139
 252,541
36,394
 38,903
 61,139
Cash and cash equivalents at end of year$36,394
 $38,903
 $61,139
$22,486
 $36,394
 $38,903
          
Supplemental disclosures of cash flow information          
Cash paid during the year for:          
Interest on notes and loan payable$27,164
 $27,283
 $31,206
$40,537
 $27,164
 $27,283
Interest on subordinated debentures12,454
 11,833
 11,765
14,573
 12,454
 11,833
Non-cash financing activity:          
Common stock issued in extinguishment of debt
 
 95,993
Common stock issued to settle warrants that have expired93
 48
 

 93
 48
See accompanying note to condensed financial statements.
See accompanying Report of Independent Registered Public Accounting Firm.

Schedule II—Condensed Financial Information of Registrant (Continued)
AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY (PARENT COMPANY)
Note to Condensed Financial Statements
December 31, 20162017


1.     Basis of Presentation
The accompanying condensed financial statements should be read in conjunction with the consolidated financial statements and notes thereto of American Equity Investment Life Holding Company (Parent Company).
In the Parent Company financial statements, its investment in and advances to subsidiaries are stated at cost plus equity in undistributed income (losses) of subsidiaries since the date of acquisition and net unrealized gains/losses on the subsidiaries' fixed maturity securities classified as "available for sale" and equity securities.
See Notes 9 and 10 to the consolidated financial statements for a description of the Parent Company's notes payable and subordinated debentures payable to subsidiary trusts.


Schedule III—Supplementary Insurance Information

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

Column A Column B Column C Column D Column E Column B Column C Column D Column E
 
Deferred policy
acquisition
costs
 
Future policy
benefits,
losses, claims
and loss
expenses
 
Unearned
premiums
 
Other policy
claims and
benefits
payable
 
Deferred policy
acquisition
costs
 
Future policy
benefits,
losses, claims
and loss
expenses
 
Unearned
premiums
 
Other policy
claims and
benefits
payable
 (Dollars in thousands) (Dollars in thousands)
As of December 31, 2017:
Life insurance
 $2,714,523
 $56,142,673
 $
 $282,884
As of December 31, 2016:
Life insurance
 $2,905,377
 $51,637,026
 $
 $298,347
 $2,905,377
 $51,637,026
 $
 $298,347
As of December 31, 2015:
Life insurance
 $2,905,136
 $45,495,431
 $
 $324,850
 $2,905,136
 $45,495,431
 $
 $324,850
As of December 31, 2014:
Life insurance
 $2,058,556
 $39,802,861
 $
 $365,819

Column A Column F Column G Column H Column I Column J Column F Column G Column H Column I Column J
 
Premium
revenue
 
Net
investment
income
 
Benefits,
claims,
losses and
settlement
expenses
 
Amortization
of deferred
policy
acquisition
costs
 
Other
operating
expenses
 
Premium
revenue
 
Net
investment
income
 
Benefits,
claims,
losses and
settlement
expenses
 
Amortization
of deferred
policy
acquisition
costs
 
Other
operating
expenses
 (Dollars in thousands) (Dollars in thousands)
For the year ended December 31, 2017:
Life insurance
 $234,722
 $1,991,997
 $3,163,234
 $255,964
 $156,183
For the year ended December 31, 2016:
Life insurance
 $217,346
 $1,849,872
 $1,572,586
 $374,012
 $143,437
 $217,346
 $1,849,872
 $1,572,586
 $374,012
 $143,437
For the year ended December 31, 2015:
Life insurance
 $172,216
 $1,692,192
 $758,203
 $286,114
 $137,306
 $172,216
 $1,692,192
 $758,203
 $286,114
 $137,306
For the year ended December 31, 2014:
Life insurance
 $151,613
 $1,531,667
 $1,679,255
 $163,578
 $130,076
See accompanying Report of Independent Registered Public Accounting Firm.


Schedule IV—Reinsurance

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

Column A Column B Column C Column D Column E Column F Column B Column C Column D Column E Column F
 Gross amount 
Ceded to
other
companies
 
Assumed
from
other
companies
 Net amount 
Percent of
amount
assumed
to net
 Gross amount 
Ceded to
other
companies
 
Assumed
from
other
companies
 Net amount 
Percent of
amount
assumed
to net
 (Dollars in thousands)
Year ended December 31, 2017          
Life insurance in force, at end of year $1,942,129
 $9,378
 $57,965
 $1,990,716
 2.91%
Insurance premiums and other considerations: 
        
Annuity product charges $206,952
 $6,458
 $
 $200,494
 
Traditional life, accident and health insurance, and life contingent immediate annuity premiums 33,938
 215
 505
 34,228
 1.48%
 (Dollars in thousands) $240,890
 $6,673
 $505
 $234,722
 0.22%
Year ended December 31, 2016           
        
Life insurance in force, at end of year $1,996,446
 $10,045
 $57,849
 $2,044,250
 2.83% $1,996,446
 $10,045
 $57,849
 $2,044,250
 2.83%
Insurance premiums and other considerations: 
         
        
Annuity product charges $178,945
 $5,366
 $
 $173,579
 
 $178,945
 $5,366
 $
 $173,579
 
Traditional life, accident and health insurance, and life contingent immediate annuity premiums 43,521
 251
 497
 43,767
 1.14% 43,521
 251
 497
 43,767
 1.14%
 $222,466
 $5,617
 $497
 $217,346
 0.23% $222,466
 $5,617
 $497
 $217,346
 0.23%
Year ended December 31, 2015 
         
        
Life insurance in force, at end of year $2,036,690
 $10,677
 $56,882
 $2,082,895
 2.73% $2,036,690
 $10,677
 $56,882
 $2,082,895
 2.73%
Insurance premiums and other considerations: 
         
        
Annuity product charges $141,595
 $5,427
 $
 $136,168
 
 $141,595
 $5,427
 $
 $136,168
 
Traditional life, accident and health insurance, and life contingent immediate annuity premiums 35,715
 256
 589
 36,048
 1.63% 35,715
 256
 589
 36,048
 1.63%
 $177,310
 $5,683
 $589
 $172,216
 0.34% $177,310
 $5,683
 $589
 $172,216
 0.34%
Year ended December 31, 2014 
        
Life insurance in force, at end of year $2,171,426
 $11,548
 $56,509
 $2,216,387
 2.55%
Insurance premiums and other considerations: 
        
Annuity product charges $124,946
 $5,956
 $
 $118,990
 
Traditional life, accident and health insurance, and life contingent immediate annuity premiums 32,308
 336
 651
 32,623
 2.00%
 $157,254
 $6,292
 $651
 $151,613
 0.43%

See accompanying Report of Independent Registered Public Accounting Firm.

Schedule V—Valuation and Qualifying Accounts

AMERICAN EQUITY INVESTMENT LIFE HOLDING COMPANY

Balance
January 1,
 
Charged to Costs
and Expenses
 
Translation
Adjustment
 
Write-offs/
Payments/Other
 
Balance
December 31,
Balance
January 1,
 
Charged to Costs
and Expenses
 
Translation
Adjustment
 
Write-offs/
Payments/Other
 
Balance
December 31,
(Dollars in thousands
Year ended December 31, 2017         
Valuation allowance on mortgage loans$(8,427) $278
 $
 $631
 $(7,518)
(Dollars in thousands         
Year ended December 31, 2016                  
Valuation allowance on mortgage loans$(14,142) $(4,846) $
 $10,561
 $(8,427)$(14,142) $(4,846) $
 $10,561
 $(8,427)
                  
Year ended December 31, 2015                  
Valuation allowance on mortgage loans$(22,633) $1,018
 $
 $7,473
 $(14,142)$(22,633) $1,018
 $
 $7,473
 $(14,142)
         
Year ended December 31, 2014         
Valuation allowance on mortgage loans$(26,047) $(6,052) $
 $9,466
 $(22,633)

See accompanying Report of Independent Registered Public Accounting Firm.


Item 15.    Exhibits and Financial Statement Schedules.

(a)   Exhibits:
F-52
Exhibit No.Description
3.1Articles of Incorporation, including Articles of Amendment (Incorporated by reference to Exhibit 3.1 to Post-Effective Amendment No. 1 to the Registration Statement on Form 10, filed on July 22, 1999, File No. 000-25985)
3.2Articles of Amendment to Articles of Incorporation (Incorporated by reference to Exhibit 3.1 to Form 10-Q for the period ended June 30, 2000 filed on August 14, 2000, File No. 000-25985)
3.3Articles of Amendment to Articles of Incorporation (Incorporated by reference to Exhibit 3.2 to Pre-Effective Amendment No. 1 to the Registration Statement on Form S-1 filed on October 20, 2003, File No. 333-108794)
3.4Articles of Amendment to Articles of Incorporation (Incorporated by reference to Exhibit 3.3 to the Registration Statement on Form S-3 filed on January 15, 2008, File No. 333-148681)
3.5Articles of Amendment to Articles of Incorporation (Incorporated by reference to Exhibit 3.5 to Form 10-Q for the period ended June 30, 2011 filed on August 5, 2011, File No. 001-31911)
3.6Third Amended and Restated Bylaws (Incorporated by reference to Exhibit 3.1 to Form 8-K filed on September 2, 2008, File No. 001-31911)
4.1Indenture dated October 29, 1999 between American Equity Investment Life Holding Company and Wilmington Trust Company (as successor in interest to West Des Moines State Bank), as trustee (Incorporated by reference to Exhibit 10.19 to the Registration Statement on Form S-1, File No. 333-108794, including all pre-effective amendments thereto)
4.2Trust Preferred Securities Guarantee Agreement dated October 29, 1999 between American Equity Investment Life Holding Company and Wilmington Trust Company (as successor in interest to West Des Moines State Bank), as trustee (Incorporated by reference to Exhibit 10.20 to the Registration Statement on Form S-1, File No. 333-108794, including all pre-effective amendments thereto)
4.3Trust Common Securities Guarantee Agreement dated October 29, 1999 between American Equity Investment Life Holding Company and West Des Moines State Bank, as trustee (Incorporated by reference to Exhibit 10.21 to the Registration Statement on Form S-1, File No. 333-108794, including all pre-effective amendments thereto)
4.4Instruments of Resignation, Appointment and Acceptance, effective September 12, 2006, among American Equity Investment Life Holding Company, Wilmington Trust Company, West Des Moines State Bank and Delaware Trust Company, National Association (formerly known as First Union Trust Company, National Association) (Incorporated by reference to Exhibit 4.10A to Form 10-K for the year ended December 31, 2008 filed on March 16, 2009)
4.5Indenture dated December 16, 2003, between American Equity Investment Life Holding Company and Wilmington Trust Company, as trustee (Incorporated by reference to Exhibit 4.11 to Form 10-K for the year ended December 31, 2003 filed on March 4, 2004)
4.6Guarantee Agreement dated December 16, 2003, between American Equity Investment Life Holding Company and Wilmington Trust Company, as trustee (Incorporated by reference to Exhibit 4.12 to Form 10-K for the year ended December 31, 2003 filed on March 4, 2004)
4.7Indenture dated April 29, 2004, between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.13 to Form 10-Q for the period ended September 30, 2004 filed on November 9, 2004)
4.8Guarantee Agreement dated April 29, 2004, between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.14 to Form 10-Q for the period ended September 30, 2004 filed on November 9, 2004)
4.9Indenture dated September 14, 2004, between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.15 to Form 10-Q for the period ended September 30, 2004 filed on November 9, 2004)
4.10Guarantee Agreement dated September 14, 2004, between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.16 to Form 10-Q for the period ended September 30, 2004 filed on November 9, 2004)
4.11Indenture dated December 22, 2004, between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.17 to Form 10-K for the year ended December 31, 2004 filed on March 14, 2005)
4.12Guarantee Agreement dated December 22, 2004, between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.18 to Form 10-K for the year ended December 31, 2004 filed on March 14, 2005)
4.13Indenture dated June 15, 2005 between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.23 to Form 10-Q for the period ended June 30, 2005 filed on August 4, 2005)
4.14Guarantee Agreement dated June 15, 2005 between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.24 to Form 10-Q for the period ended June 30, 2005 filed on August 4, 2005)
4.15Indenture dated August 4, 2005 between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.25 to Form 10-Q for the period ended September 30, 2005 filed on November 4, 2005)
4.16Guarantee Agreement dated August 4, 2005 between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.26 to Form 10-Q for the period ended September 30, 2005 filed on November 4, 2005)
4.17Indenture dated December 15, 2005 between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.27 to Form 10-K for the year ended December 31, 2005 filed on March 14, 2006)
4.18Guarantee Agreement dated December 15, 2005 between American Equity Investment Life Holding Company and JP Morgan Chase Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.28 to Form 10-K for the year ended December 31, 2005 filed on March 14, 2006)
4.19Amended and Restated Indenture dated July 7, 2006 between American Equity Investment Life Holding Company and Wells Fargo Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.31 to Form 10-Q for the period ended September 30, 2006 filed on November 3, 2006)

Exhibit No.Description
4.20Amended and Restated Guarantee Agreement dated July 7, 2006 between American Equity Investment Life Holding Company and Wells Fargo Delaware Trust Company, as trustee (Incorporated by reference to Exhibit 4.32 to Form 10-Q for the period ended September 30, 2006 filed on November 3, 2006)
4.21Senior Amended and Restated Indenture, dated as of April 22, 2004, between American Equity Investment Life Holding Company and U.S. Bank National Association, as trustee (Incorporated by reference to Exhibit 4.1 to Amendment No.1 to Form S-3 filed on April 22, 2004).
4.22First Supplemental Indenture, dated July 17, 2013, among American Equity Investment Life Holding Company, U.S. Bank National Association, and Wells Fargo Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.2 to Form 8-K filed on July 17, 2013)
4.23Second Supplemental Indenture, dated as of July 17, 2013, between American Equity Investment Life Holding Company and Wells Fargo Bank, National Association, as trustee (Incorporated by reference to Exhibit 4.3 to Form 8-K filed on July 17, 2013)
10.1 *Deferred Compensation Agreement between American Equity Investment Life Holding Company and David S. Mulcahy dated December 31, 1997 (Incorporated by reference to Exhibit 10.5 to the Registration Statement on Form 10 filed on May 6, 1999)
10.2 *2000 Employee Stock Option Plan (Incorporated by reference to Exhibit 10.7 to Form 10-Q for the period ended June 30, 2000 filed on August 14, 2000)
10.3 *2000 Director Stock Option Plan (Incorporated by reference to Exhibit 10.8 to Form 10-Q for the period ended June 30, 2000 filed on August 14, 2000)
10.4 *American Equity Investment Life Holding Company 2009 Employee Incentive Plan (Incorporated by reference to Exhibit 10.2 to Form 8-K filed on June 9, 2009)
10.5 *Form of Change in Control Agreement between American Equity Investment Life Holding Company and each of John M. Matovina and Debra J. Richardson (Incorporated by reference to the Registration Statement on Form S-1, File No. 333-108794, including all pre-effective amendments thereto)
10.6 *Form of Amendment to Change in Control Agreement between American Equity Investment Life Holding Company and each of John M. Matovina and Debra J. Richardson (Incorporated by reference to Exhibit 10.11-A to Form 10-K for the year ended December 31, 2012 filed on March 7, 2013)
10.7American Equity Investment Life Holding Company Independent Insurance Agent Stock Option Plan (Incorporated by reference to Exhibit 10.26 to Form 10-Q for the period ended September 30, 2007 filed on November 2, 2007)
10.8Coinsurance Agreement effective July 1, 2009, between American Equity Investment Life Insurance Company and Athene Life Re Ltd (Treaty #070109) (Incorporated by reference to Exhibit 10.29 to Form 10-Q for the period ended September 30, 2009 filed on November 9, 2009)
10.9Coinsurance Agreement effective July 1, 2009, between American Equity Investment Life Insurance Company and Athene Life Re Ltd (Treaty #08042009) (Incorporated by reference to Exhibit 10.29 to Form 10-Q for the period ended September 30, 2009 filed on November 9, 2009)
10.10 *Amended Retirement Benefit Agreement, dated as of March 29, 2010, between American Equity Investment Life Holding Company and David J. Noble (Incorporated by reference to Exhibit 10.1 to Form 8-K filed on April 2, 2010)
10.11 *Amended and Restated Retirement Benefit Agreement by and between American Equity Investment Life Holding Company and David J. Noble (Incorporated by reference to Exhibit 10.3 to Form 10-Q filed on May 10, 2016)
10.122010 Independent Insurance Agent Stock Option Plan (Incorporated by reference to Exhibit 99.1 to the Registration Statement on Form S-3 filed on December 15, 2010)
10.13 *American Equity Investment Life Holding Company 2011 Director Stock Option Plan (Incorporated by reference to Appendix A to Schedule 14A Definitive Proxy Statement for the 2011 annual meeting of stockholders filed on April 25, 2011)
10.142012 Independent Insurance Agent Stock Option Plan (Incorporated by reference to Exhibit 10.1 to the Registration Statement on Form S-3 filed on August 23, 2012)
10.15 *Form of Change in Control Agreement between American Equity Investment Life Holding Company and each of Ted M. Johnson, Ronald J. Grensteiner, Jeffrey D. Lorenzen and Renee D. Montz (Incorporated by reference to Exhibit 10.1 to Form 8-K filed on December 13, 2012)
10.16 *American Equity Investment Life Holding Company Short-Term Performance Incentive Plan adopted April 15, 2013, as amended and restated (Incorporated by reference to Exhibit 10.1 to Form 8-K filed on April 15, 2013)
10.17 *Form of Restricted Stock Award Agreement with respect to Common Stock of American Equity Investment Life Holding Company-Nonperformance Based (Incorporated by reference to Exhibit 10.1 to Form 10-Q for the period ended March 31, 2013 filed on May 8, 2013)
10.18 *Form of Performance Restricted Stock Unit Award Agreement (Incorporated by reference to Exhibit 10.2 to Form 10-Q for the period ended March 31, 2013 filed on May 8, 2013)
10.19 *Form of First Amendment to the Performance Restricted Stock Unit Award Agreement (Incorporated by reference to Exhibit 10.1 to Form 10-Q filed on May 10, 2016)
10.20 *Form of Restricted Stock Award Agreement with respect to Common Stock of American Equity Investment Life Holding Company-Performance Based (Incorporated by reference to Exhibit 10.3 to Form 10-Q for the period ended March 31, 2013 filed on May 8, 2013)
10.21 *Form of Change in Control Agreement between American Equity Investment Life Holding Company and Scott A. Samuelson (Incorporated by reference to Exhibit 10.3 to Form 10-Q for the period ended June 30, 2013 filed on August 8, 2013)
10.22 *2013 Director Equity and Incentive Plan (Incorporated by reference to Exhibit 10.4 to Form 10-Q for the period ended June 30, 2013 filed on August 8, 2013)
10.23Credit Agreement dated September 30, 2016 among American Equity Life Investment Holding Company, JP Morgan Chase Bank, National Association, SunTrust Bank, and Citibank, National Association and Royal Bank of Canada (Incorporated by reference to Exhibit 10.1 to Form 8-K filed on October 3, 2016)
10.24Amended and Restated American Equity Investment Life Holding Company 2014 Independent Insurance Agent Restricted Stock and Restricted Stock Unit Plan (Incorporated by reference to Exhibit 10.1 to the Registration Statement on Form S-3 filed on December 17, 2014)
10.25Amended and Restated American Equity Investment Life Holding Company 2014 Independent Insurance Agent Restricted Stock and Restricted Stock Unit Plan, as amended (Incorporated by reference to the Appendix B to the Company's proxy statement on Form DEF 14A filed on April 18, 2016)
10.26Confirmation, dated August 6, 2015, by and between American Equity Life Investment Holding Company and RBC Capital Markets, LLC, as agent for Royal Bank of Canada (Incorporated by reference to Exhibit 10.1 to Form 8-K filed on August 12, 2015)

Exhibit No.Description
10.27Confirmation, dated August 11, 2015, by and between American Equity Life Investment Holding Company and RBC Capital Markets, LLC, as agent for Royal Bank of Canada (Incorporated by reference to Exhibit 10.2 to Form 8-K filed on August 12, 2015)
10.28 *Form of Restricted Stock Cancellation Agreement (Incorporated by reference to Exhibit 10.2 to Form 10-Q for the period ended March 31, 2016 filed on May 10, 2016)
10.29 *American Equity Investment Life Holding Company 2016 Employee Incentive Plan (Incorporated by reference to the Appendix A to the Company's proxy statement on Form DEF 14A filed on April 18, 2016)
10.30 *First Amendment to American Equity Investment Life Holding Company 2016 Employee Incentive Plan (Incorporated by reference to Exhibit 99.2 to Form S-8 filed on September 8, 2016)
10.31 *Form of Restricted Stock Award Agreement with Respect to Common Stock of American Equity Investment Life Holding Company (Incorporated by reference to Exhibit 10.1 to Form 8-K filed on June 8, 2016)
10.32 *Form of Performance Restricted Stock Unit Award Agreement (Incorporated by reference to Exhibit 10.2 to Form 8-K filed on June 8, 2016)
10.33 *Form of First Amendment to Employee Stock Option Agreements between American Equity Investment Life Holding Company and each of David J. Noble and Debra J. Richardson (Incorporated by reference to Exhibit 10.2 to Form 10-Q filed on August 9, 2016)
10.34 *Retirement and Transition Agreement by and between American Equity Investment Life Holding Company and Debra J. Richardson (Incorporated by reference to Exhibit 10.3 to Form 10-Q filed on August 9, 2016)
12.1Ratio of Earnings to Fixed Charges
21.2Subsidiaries of American Equity Investment Life Holding Company
23.1Consent of Independent Registered Public Accounting Firm
31.1Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

*Denotes management contract or compensatory plan.

F-55