SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                   FORM 10-Q


(Mark One)*
  X Quarterly report pursuant to Section 13 or 15(d) of the Securities
- ----
    Exchange Act of 1934 for the quarterly period ended MARCH 31, 2001 or
                                                        --------------
    Transition report pursuant to Section 13 or 15(d) of the Securities
- ----
    Exchange Act of 1934 for the transition period from _________ to _________

                                    0-10200
                                    -------
                            (Commission File Number)

                            SEI INVESTMENTS COMPANY
                            -----------------------
            (Exact name of registrant as specified in its charter)

        Pennsylvania                                            23-1707341
(State or other jurisdiction of                               (IRS Employer
incorporation or organization)                            Identification Number)

            1 FREEDOM VALLEY DRIVE, OAKS, PENNSYLVANIA  19456-1100
            ------------------------------------------------------
                   (Address of principal executive offices)
                                  (Zip Code)

                                (610) 676-1000
                                --------------
              (Registrant's telephone number, including area code)

                                      N/A
                                      ---
  (Former name, former address and former fiscal year, if changed since last
                                    report)

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
                                        ---    ---

*APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE
PRECEDING FIVE YEARS:

Indicate by check mark whether the registrant has filed all documents and
reports required to be filed by Sections 12, 13, or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan
confirmed by a court.  Yes___ No___

*APPLICABLE ONLY TO CORPORATE ISSUERS:

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of March 31, 2001: 108,531,508 shares of common stock, par
value $.01 per share.


PART I.  FINANCIAL INFORMATION
- -------  ---------------------

ITEM 1.  FINANCIAL STATEMENTS
- -------  --------------------


                          CONSOLIDATED BALANCE SHEETS
                          ---------------------------
                                (In thousands)


                                                   March 31, 2001   December 31, 2000
                                                   ---------------  -----------------
                                                     (unaudited)
                                                              
Assets
- ------
Current assets:

Cash and cash equivalents (including restricted
    cash of $10,889 and $11,900)                         $111,159            $159,576
Receivables from regulated investment companies            28,103              27,607
Receivables, net of allowance for doubtful
    accounts of $1,700                                     54,442              47,404
Deferred income taxes                                       9,030               9,030
Prepaid expenses and other current assets                   6,185               5,414
                                                         --------            --------

          Total current assets                            208,919             249,031
                                                         --------            --------

Property and equipment, net of accumulated
    depreciation and amortization of $88,005
    and $83,874                                            79,797              75,111
                                                         --------            --------

Capitalized software, net of accumulated
    amortization of $12,178 and $11,733                    12,378              12,823
                                                         --------            --------

Investments Available for Sale                             29,916              20,294
                                                         --------            --------

Other assets, net                                          21,749              18,323
                                                         --------            --------

          Total Assets                                   $352,759            $375,582
                                                         ========            ========









        The accompanying notes are an integral part of these statements.

                                       2


                          CONSOLIDATED BALANCE SHEETS
                          ---------------------------
                       (In thousands, except par value)






                                                     March 31, 2001   December 31, 2000
                                                    ---------------  -----------------
                                                      (unaudited)
Liabilities and Shareholders' Equity
- --------------------------------------

Current liabilities:
                                                                     
Current portion of long-term debt                       $  2,000            $  2,000
Accounts payable                                           5,993               6,721
Accrued expenses                                         101,153             121,282
Deferred revenue                                          11,929              16,450
                                                       ---------           ---------

     Total current liabilities                           121,075             146,453
                                                       ---------           ---------

Long-term debt                                            25,000              27,000
                                                       ---------           ---------

Deferred income taxes                                      5,758               4,708
                                                       ---------           ---------


Shareholders' equity:

Common stock, $.01 par value, 750,000 shares
   authorized; 108,532 and 108,560 shares issued
   and outstanding                                         1,085              1,086
Capital in excess of par value                           145,775            125,473
Retained earnings                                         55,747             72,521
Accumulated other comprehensive losses                    (1,681)            (1,659)
                                                        --------           --------

          Total shareholders' equity                     200,926            197,421
                                                        --------           --------

          Total Liabilities and Shareholders' Equity    $352,759           $375,582
                                                        ========           ========













        The accompanying notes are an integral part of these statements.

                                       3


                       CONSOLIDATED STATEMENTS OF INCOME
                       ---------------------------------
                                  (unaudited)
                     (In thousands, except per share data)




                                                                Three Months
                                                               Ended March 31,
                                                              2001         2000
                                                              ----         ----
                                                                 
Revenues                                                      $161,301   $138,746

Expenses:
 Operating and development                                      76,029     66,282
 Sales and marketing                                            38,256     38,370
 General and administrative                                      5,383      3,542
                                                              --------   --------

Income from operations                                          41,633     30,552

Equity in the earnings of unconsolidated affiliate               2,238      1,753
Interest income                                                  2,249        985
Interest expense                                                  (550)      (599)
                                                              --------   --------

Income before income taxes                                      45,570     32,691
Income taxes                                                    16,861     12,422
                                                              --------   --------

Net income                                                      28,709     20,269
                                                              --------   --------

Other comprehensive income (loss), net of tax:
  Foreign currency translation adjustments,
     net of income tax expense (benefit) of ($136) and $120       (232)       195
  Unrealized holding gains (losses) on investments,
     net of income tax benefit of $123 and $64                     210       (104)
                                                              --------   --------

Other comprehensive income (loss)                                  (22)        91
                                                              --------   --------

Comprehensive income                                          $ 28,687   $ 20,360
                                                              ========   ========


Basic earnings per common share                               $    .26    $   .19
                                                              =========   =======

Diluted earnings per common share                             $    .25    $   .18
                                                              =========   =======





        The accompanying notes are an integral part of these statements.

                                       4


                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                     -------------------------------------
                                  (unaudited)
                                 (In thousands)



                                                            Three Months
                                                           Ended March 31,
                                                           2001       2000
                                                         --------   --------
                                                              
Cash flows from operating activities:
Net income                                               $ 28,709   $ 20,269
Adjustments to reconcile net income
 to net cash provided by operating activities:
   Depreciation and amortization                            4,735      4,053
   Equity in the earnings of unconsolidated affiliate      (2,238)    (1,753)
   Tax benefit on stock options exercised                  13,809      2,829
   Other                                                      103      5,466
   Change in current assets and liabilities:
     Decrease (increase) in
      Receivables from regulated investment companies        (496)    (2,795)
      Receivables                                          (7,038)    (7,887)
      Prepaid expenses and other current assets              (771)       (85)
     Increase (decrease) in
      Accounts payable                                       (728)    (1,030)
      Accrued expenses                                    (15,782)   (19,746)
      Deferred revenue                                     (4,521)     2,365
                                                         --------   --------
     Net cash provided by operating activities             15,782      1,856
                                                         --------   --------

Cash flows from investing activities:
   Additions to property and equipment                     (8,915)    (4,136)
   Additions to capitalized software                           --       (449)
   Purchase of investments available for sale             (11,794)      (782)
   Other                                                    1,845      4,311
                                                         --------   --------
     Net cash used in investing activities                (18,864)    (1,056)
                                                         --------   --------

Cash flows from financing activities:
   Payment on long-term debt                               (2,000)    (2,000)
   Purchase and retirement of common stock                (46,249)   (13,768)
   Proceeds from issuance of common stock                   7,261      2,316
   Payment of dividend                                     (4,347)    (3,538)
                                                         --------   --------
     Net cash used in financing activities                (45,335)   (16,990)

Net decrease in cash and cash equivalents                 (48,417)   (16,190)

Cash and cash equivalents, beginning of period            159,576     73,206
                                                         --------   --------

Cash and cash equivalents, end of period                 $111,159   $ 57,016
                                                         ========   ========





        The accompanying notes are an integral part of these statements.

                                       5


                   Notes to Consolidated Financial Statements
                   ------------------------------------------


Note 1.  Summary of Significant Accounting Policies
         ------------------------------------------

         Nature of Operations
         --------------------

         SEI Investments Company (the "Company") is organized around its four
         primary business lines: Technology Services, Asset Management, Mutual
         Fund Services, and Investments in New Business. Technology Services
         includes the Trust 3000 product line and trust operations outsourcing.
         Asset Management provides investment solutions through various
         investment products and services distributed directly or through
         professional investment advisors, financial planners, and other
         financial intermediaries to institutional and high-net-worth markets.
         Mutual Fund Services provides administration and distribution services
         to proprietary mutual funds created for banks, insurance firms, and
         investment management companies. Investments in New Business consists
         of the Company's Canadian and international operations which provide
         investment advisory services globally through investment products and
         services.

         Summary Financial Information and Results of Operations
         -------------------------------------------------------

         In the opinion of the Company, the accompanying unaudited Consolidated
         Financial Statements contain all adjustments (consisting of only normal
         recurring adjustments) necessary to present fairly the financial
         position as of March 31, 2001, the results of operations and cash flows
         for the three months ended March 31, 2001 and 2000.

         Interim Financial Information
         -----------------------------

         While the Company believes that the disclosures presented are adequate
         to make the information not misleading, these Consolidated Financial
         Statements should be read in conjunction with the Consolidated
         Financial Statements and the notes included in the Company's latest
         annual report on Form 10-K.

         Principles of Consolidation
         ---------------------------

         The Consolidated Financial Statements include the accounts of the
         Company and its wholly owned subsidiaries. The Company's principal
         subsidiaries are SEI Investments Distribution Company, SEI Investments
         Management Corporation, and SEI PrivateTrust Company. All intercompany
         accounts and transactions have been eliminated. Investment in
         unconsolidated affiliate is accounted for using the equity method due
         to the Company's less than 50 percent ownership. The Company's portion
         of the affiliate's operating results is reflected in Equity in the
         earnings of unconsolidated affiliate on the accompanying Consolidated
         Statements of Income. (See Note 5)

         Property and Equipment
         ----------------------
         Property and equipment on the accompanying Consolidated Balance Sheets
         consist of the following:


                                                                                                                     Estimated
                                                                                                                   Useful Lives
                                                        March 31, 2001                December 31, 2000             (In Years)
                                                   -------------------------       ------------------------      -----------------
                                                                                                        
Equipment                                                      $ 75,421,000                   $ 71,377,000             3 to 5
Buildings                                                        34,695,000                     34,695,000            25 to 39
Land                                                              9,345,000                      9,345,000               N/A
Purchased software                                               17,433,000                     16,035,000                3
Furniture and fixtures                                           14,524,000                     14,230,000             3 to 5
Leasehold improvements                                            7,306,000                      7,313,000           Lease Term
Construction in progress                                          9,078,000                      5,990,000               N/A
                                                               ------------                   ------------

                                                                167,802,000                    158,985,000
Less:  Accumulated depreciation
          and amortization                                      (88,005,000)                   (83,874,000)
                                                               ------------                   ------------
Property and Equipment, net                                    $ 79,797,000                   $ 75,111,000
                                                               ============                   ============


                                       6


         Property and equipment are stated at cost. Depreciation and
         amortization are computed using the straight-line method over the
         estimated useful life of each asset. Expenditures for renewals and
         betterments are capitalized, while maintenance and repairs are charged
         to expense when incurred.

         Capitalized Software
         --------------------

         The Company accounts for software development costs in accordance with
         Statement of Financial Accounting Standards No. 86, "Accounting for the
         Costs of Computer Software to Be Sold, Leased, or Otherwise Marketed"
         ("SFAS 86"). Under SFAS 86, costs incurred to create a computer
         software product are charged to research and development expense as
         incurred until technological feasibility has been established. The
         Company establishes technological feasibility upon completion of a
         detail program design. At that point, computer software costs are
         capitalized until the product is available for general release to
         customers. The establishment of technological feasibility and the
         ongoing assessment of recoverability of capitalized software
         development costs require considerable judgment by management with
         respect to certain external factors, including, but not limited to,
         anticipated future revenues, estimated economic life, and changes in
         technology. Amortization begins when the product is released.
         Capitalized software development costs are amortized on a product-by-
         product basis using the straight-line method over the estimated
         economic life of the product or enhancement, which is primarily three
         to ten years, with a weighted average remaining life of approximately
         7.3 years.

         Earnings per Share
         ------------------

         The Company computes earnings per common share in accordance with
         Statement of Financial Accounting Standards No. 128, "Earnings per
         Share" ("SFAS 128"). Pursuant to SFAS 128, dual presentation of basic
         and diluted earnings per common share is required on the face of the
         statements of income for companies with complex capital structures.
         Basic earnings per common share is calculated by dividing net income
         available to common shareholders by the weighted average number of
         common shares outstanding for the period. Diluted earnings per common
         share reflects the potential dilution from the exercise or conversion
         of securities into common stock, such as stock options. All common
         share figures have been restated to reflect the three-for-one stock
         split in June 2000 and the two-for-one stock split in February 2001.



                                                                                For the three month period ended
                                                                                         March 31, 2001
                                                            ----------------------------------------------------------------------
                                                                     Income                     Shares                Per Share
                                                                  (Numerator)               (Denominator)               Amount
                                                              --------------------       --------------------       --------------

                                                                                                           
Basic earnings per common share                                       $28,709,000                108,600,000                  $.26
                                                                                                                    ==============
Dilutive effect of stock options                                               --                  7,218,000
                                                              -------------------                -----------
Diluted earnings per common share                                     $28,709,000                115,818,000                  $.25
                                                              ===================                ===========        ==============

                                                                                For the three month period ended
                                                                                         March 31, 2000
                                                            ----------------------------------------------------------------------
                                                                    Income                     Shares                 Per Share
                                                                  (Numerator)               (Denominator)               Amount
                                                              -------------------        -------------------        --------------
Basic earnings per common share                                       $20,269,000                105,990,000                  $.19
                                                                                                                    ==============
Dilutive effect of stock options                                               --                  6,582,000
                                                              -------------------                -----------

Diluted earnings per common share                                     $20,269,000                112,572,000                  $.18
                                                              ===================                ===========        ==============


                                       7


         Options to purchase 1,249,000 and 2,220,000 shares of common stock,
         with an average exercise price of $50.00 and $19.75 were outstanding
         during the first quarter of 2001 and 2000, respectively, but were
         excluded from the diluted earnings per common share calculation because
         the options' exercise prices were greater than the average market price
         of the Company's common stock.

         Statements of Cash Flows
         ------------------------

         For purposes of the Consolidated Statements of Cash Flows, the Company
         considers investment instruments purchased with an original maturity of
         three months or less to be cash equivalents.

         Supplemental disclosures of cash paid/received during the three months
         ended March 31 is as follows:


                                                                                            
                                                                                         2001                       2000
                                                                                      ----------                 ----------
Interest paid                                                                         $1,061,000                 $1,133,000
Interest and dividends received                                                       $2,508,000                 $  936,000
Income taxes paid                                                                     $       --                 $6,093,000


         Management's Use of Estimates
         -----------------------------

         The preparation of financial statements in conformity with accounting
         principles generally accepted in the Unites States 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 financial statements and the reported
         amounts of revenues and expenses during the reporting period. Actual
         results could differ from those estimates.


Note 2.  Comprehensive Income - The Company computes comprehensive income in
         --------------------
         accordance with Statement of Financial Accounting Standards No. 130,
         "Reporting Comprehensive Income" ("SFAS 130"). SFAS 130 establishes
         standards for reporting and presentation of comprehensive income and
         its components (revenues, expenses, gains and losses) in a full set of
         general-purpose financial statements that is presented with equal
         prominence as other financial statements. Comprehensive income includes
         net income, foreign currency translation adjustments, and unrealized
         holding gains and losses and is presented on the accompanying
         Consolidated Statements of Income.



                                                           Foreign                  Unrealized              Accumulated
                                                          Currency                   Holding                   Other
                                                         Translation              Gains(Losses)            Comprehensive
                                                         Adjustments              on Investments              Losses
                                                  -------------------------  ------------------------  ---------------------
                                                                                              
Beginning balance                                                $(736,000)                $(923,000)           $(1,659,000)
Current period change                                             (232,000)                  210,000                (22,000)
                                                                                           ---------            -----------
Ending Balance                                                   $(968,000)                $(713,000)           $(1,681,000)


                                       8


Note 3.  Receivables - Receivables on the accompanying Consolidated Balance
         -----------
         Sheets consist of the following:


                                                                                  March 31, 2001            December 31, 2000
                                                                                  --------------            -----------------
                                                                                           
Trade receivables                                                                  $22,666,000                 $22,558,000
Fees earned, not received                                                            1,651,000                   1,801,000
Fees earned, not billed                                                             31,825,000                  24,745,000
                                                                                   -----------                 -----------

                                                                                    56,142,000                  49,104,000
Less:  Allowance for doubtful accounts                                              (1,700,000)                 (1,700,000)
                                                                                   -----------                 -----------

                                                                                   $54,442,000                 $47,404,000
                                                                                   ===========                 ===========


         Fees earned, not received represent brokerage commissions earned but
         not yet collected. Fees earned, not billed represent receivables earned
         but unbilled and result from timing differences between services
         provided and contractual billing schedules.

         Receivables from regulated investment companies on the accompanying
         Consolidated Balance Sheets represent fees collected from the Company's
         wholly owned subsidiaries, SEI Investments Distribution Company and SEI
         Investments Management Corporation, for distribution, investment
         advisory, and administration services provided by these subsidiaries to
         various regulated investment companies sponsored by the Company.


Note 4.  Investments Available for Sale - Investments available for sale
         ------------------------------
         consist of investments in mutual funds sponsored by the Company. The
         Company accounts for investments in marketable securities pursuant to
         Statement of Financial Accounting Standards No. 115, "Accounting for
         Certain Investments in Debt and Equity Securities" ("SFAS 115"). SFAS
         115 requires that debt and equity securities classified as available
         for sale be reported at market value. Unrealized holding gains and
         losses, net of income taxes, are reported as a separate component of
         Shareholders' equity. Realized gains and losses, as determined on a
         specific identification basis, are reported separately on the
         accompanying Consolidated Statements of Income.

         At March 31, 2001, Investments available for sale had an aggregate cost
         of $31,096,000 and an aggregate market value of $29,916,000 with gross
         unrealized holding losses of $1,180,000. At that date, the net
         unrealized holding losses of $713,000 (net of income tax expense of
         $467,000) were reported as a separate component of Accumulated other
         comprehensive losses on the accompanying Consolidated Balance Sheets.

         At December 31, 2000, Investments available for sale had an aggregate
         cost of $21,710,000 and an aggregate market value of $20,294,000 with
         gross unrealized holding losses of $1,416,000. At that date, the net
         unrealized holding losses of $923,000 (net of income tax expense of
         $493,000) were reported as a separate component of Accumulated other
         comprehensive losses on the accompanying Consolidated Balance Sheets.


Note 5.  Other Assets - Other assets on the accompanying Consolidated Balance
         ------------
         Sheets consist of the following:



                                                                              March 31, 2001             December 31,2000
                                                                          ----------------------      -----------------------
                                                                                                
Investment in unconsolidated affiliate                                         $ 5,729,000                  $ 5,627,000
Other, net                                                                      16,020,000                   12,696,000
                                                                               -----------                  -----------

Other assets                                                                   $21,749,000                  $18,323,000
                                                                               ===========                  ===========


                                       9


         Investment in Unconsolidated Affiliate - LSV Asset Management ("LSV")
         --------------------------------------
         is a partnership formed between the Company and three leading academics
         in the field of finance. LSV is a registered investment advisor which
         provides investment advisory services to institutions, including
         pension plans and investment companies. LSV is currently the portfolio
         manager for a number of Company-sponsored mutual funds. The Company's
         interest in LSV for the first quarter in 2001 and 2000 was
         approximately 45 percent. LSV is accounted for using the equity method
         of accounting due to the less than 50 percent ownership. The Company's
         portion of LSV's net earnings is reflected in Equity in the earnings of
         unconsolidated affiliate on the accompanying Consolidated Statements of
         Income.

         The following table contains the Condensed Statements of Income of LSV
         for the three months ended March 31:


                                                                                       
                                                                                2001                          2000
                                                                            ----------                    ----------
Revenues                                                                    $6,952,000                    $5,294,000
                                                                            ==========                    ==========
Net income                                                                  $5,028,000                    $3,761,000
                                                                            ==========                    ==========


       The following table contains the Condensed Balance Sheets of LSV:



                                                                    March 31, 2001              December 31, 2000
                                                                 ---------------------       -----------------------

                                                                                       
Current assets                                                             $11,205,000                   $10,976,000
Non-current assets                                                             154,000                       103,000
                                                                           -----------                   -----------

Total assets                                                               $11,359,000                   $11,079,000
                                                                           ===========                   ===========

Current liabilities                                                        $ 1,089,000                   $ 1,285,000
Partners' capital                                                           10,270,000                     9,794,000
                                                                           -----------                   -----------
Total liabilities and
   partners' capital                                                       $11,359,000                   $11,079,000
                                                                           ===========                   ===========




Note 6.  Accrued Expenses - Accrued expenses on the accompanying Consolidated
         ----------------
         Balance Sheets consist of the following:



                                                                    March 31, 2001              December 31, 2000
                                                                 ---------------------       -----------------------

                                                                                       
Accrued compensation                                                      $ 22,046,000                  $ 49,890,000
Accrued proprietary fund services                                           14,252,000                    14,834,000
Accrued consulting services                                                  7,572,000                     8,200,000
Other accrued expenses                                                      57,283,000                    48,358,000
                                                                          ------------                  ------------

Total accrued expenses                                                    $101,153,000                  $121,282,000
                                                                          ============                  ============


Note 7.  Line of Credit - The Company has a line of credit agreement (the
         ---------------
         "Agreement") with its principal lending institution. The Agreement
         provides for borrowings of up to $50,000,000. The Agreement ends on
         August 31, 2001, at which time the outstanding principal balance, if
         any, becomes due unless the Agreement is extended. The line of credit,
         when utilized, accrues interest at the Prime rate or one and one-
         quarter percent above the London Interbank Offered Rate. The Company is
         obligated to pay a commitment fee equal to one-quarter of one percent

                                       10


         per annum on the average daily unused portion of the commitment.
         Certain covenants under the Agreement require the Company to maintain
         specified levels of net worth and place certain restrictions on
         investments. The Company had no outstanding borrowings on its line of
         credit at March 31, 2001. The Company was in compliance with these
         covenants during the first quarter of 2001.


Note 8.  Long-term Debt - On February 24, 1997, the Company signed a Note
         --------------
         Purchase Agreement authorizing the issuance and sale of $20,000,000 of
         7.20% Senior Notes, Series A, and $15,000,000 of 7.27% Senior Notes,
         Series B, (collectively, the "Notes") in a private offering with
         certain financial institutions. The Notes are unsecured with final
         maturities ranging from 10 to 15 years. The proceeds from the Notes
         were used to repay the outstanding balance on the Company's line of
         credit at that date. The Note Purchase Agreement, as amended, contains
         various covenants, including limitations on indebtedness, maintenance
         of minimum net worth levels, and restrictions on certain investments.
         In addition, the agreement limits the Company's ability to merge or
         consolidate, and to sell certain assets. None of these covenants
         negatively affect the Company's liquidity or capital resources.

         Principal payments on the Notes are made annually from the date of
         issuance while interest payments are made semi-annually. The Company
         made its scheduled payment of $2,000,000 in February 2001. The current
         portion of the Notes amounted to $2,000,000 at March 31, 2001. The
         carrying amount of the Company's long-term debt is not materially
         different from its fair value. The company was in compliance with these
         covenants during the first quarter of 2001.



Note 9.  Common Stock Buyback - The Board of Directors has authorized the
         --------------------
         purchase of the Company's common stock on the open market or through
         private transactions of up to an aggregate of $453,365,000. Through
         March 31, 2001, a total of 99,492,000 shares at an aggregate cost of
         $401,339,000 have been purchased and retired. The Company purchased
         1,227,000 shares at a total cost of $46,249,000 during the first
         quarter of 2001.

         The Company immediately retires its common stock when purchased. Upon
         retirement, the Company reduces Capital in excess of par value for the
         average capital per share outstanding and the remainder is charged
         against Retained earnings. If the Company reduces its Retained earnings
         to zero, any subsequent purchases of common stock will be charged
         entirely to Capital in excess of par value.


Note 10. Dividend - On December 14, 2000, the Board of Directors declared a
         --------
         cash dividend of $.04 per share on the Company's common stock, which
         was paid on January 25, 2001, to shareholders of record on January 8,
         2001.


Note 11. Segment Information - The Company defines its business segments in
         -------------------
         accordance with Statement of Financial Accounting Standards No. 131,
         "Disclosures about Segments of an Enterprise and Related Information"
         ("SFAS 131"). SFAS 131 establishes standards for the way public
         business enterprises report financial information about operating
         segments in financial statements. SFAS 131 also requires additional
         disclosures about product and services, geographic areas, and major
         customers.

                                       11


       The Company is organized around its four primary business lines:
       Technology Services, Asset Management, Mutual Fund Services, and
       Investments in New Business.  Technology Services includes the Company's
       Trust 3000 product line and trust operations outsourcing.  Asset
       Management provides investment solutions through various investment
       products and services distributed directly or through professional
       investment advisors, financial planners, and other financial
       intermediaries to institutional and high-net-worth markets.  Mutual Fund
       Services provides administration and distribution services to proprietary
       mutual funds created for banks, insurance firms, and investment
       management companies.  Investments in New Business consists of the
       Company's Canadian and international operations which provides investment
       advisory services globally through investment products and services.

       The information in the following tables is derived from the Company's
       internal financial reporting used for corporate management purposes.  The
       accounting policies of the reportable segments are the same as those
       described in Note 1.  The Company's management evaluates financial
       performance of its operating segments based on income before income
       taxes.

       The following tables highlight certain unaudited financial information
       about each of the Company's segments for the three months ended March 31,
       2001 and 2000.



                                                                 Mutual     Investments       General
                                     Technology      Asset        Fund         In New           And
                                      Services    Management    Services      Business    Administrative      Total
                                     -----------  -----------  -----------  ------------  ---------------  ------------
                                                      For the Three-Month Period Ended March 31, 2001
                                   ------------------------------------------------------------------------------------
                                                                                         
Revenues                             $60,660,000  $60,023,000  $32,017,000  $ 8,601,000                    $161,301,000
                                     -----------  -----------  -----------  -----------                    ------------
Operating
   income (loss)                     $20,807,000  $22,559,000  $ 7,485,000  $(3,835,000)     $(5,383,000)  $ 41,633,000
                                     -----------  -----------  -----------  -----------   --------------
Other income, net                                                                                          $  3,937,000
                                                                                                           ------------
Income before
   income taxes                                                                                            $ 45,570,000
                                                                                                           ------------
Depreciation and
   amortization                      $ 3,280,000  $   675,000  $   377,000  $   238,000      $   165,000   $  4,735,000
                                     -----------  -----------  -----------  -----------   --------------   ------------
Capital
   Expenditures                      $ 6,447,000  $ 1,296,000  $   440,000  $   213,000      $   519,000   $  8,915,000
                                     -----------  -----------  -----------  -----------   --------------   ------------


                                                     For the Three-Month Period Ended March 31, 2000
                                   ---------------------------------------------------------------------------------
Revenues                             $51,855,000  $48,322,000  $30,026,000  $ 8,543,000                 $138,746,000
                                     -----------  -----------  -----------  -----------                 ------------
Operating
   income (loss)                     $18,071,000  $13,474,000  $ 5,403,000  $(2,854,000)  $(3,542,000)  $ 30,552,000
                                     -----------  -----------  -----------  -----------   -----------
Other income, net                                                                                       $  2,139,000
                                                                                                        ------------
Income before
   income taxes                                                                                         $ 32,691,000
                                                                                                        ------------
Depreciation and
   amortization                      $ 2,842,000  $   530,000  $   293,000  $   254,000   $   134,000   $  4,053,000
                                     -----------  -----------  -----------  -----------   -----------   ------------
Capital
   expenditures                      $ 2,574,000  $   518,000  $   447,000  $   333,000   $   264,000   $  4,136,000
                                     -----------  -----------  -----------  -----------   -----------   ------------


                                       12


Item 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
- -------  -----------------------------------------------------------------------
         OF OPERATIONS.
         -------------
                     (In thousands, except per share data)

We are organized around our four business lines: Technology Services, Asset
Management, Mutual Fund Services, and Investments in New Business.  Financial
information on each of these segments is reflected in Note 11 of the Notes to
Consolidated Financial Statements.

RESULTS OF OPERATIONS
- ---------------------

First Quarter Ended March 31, 2001 Compared to First Quarter Ended March 31,
2000

Consolidated Overview



Income Statement Data
(In thousands, except per common share data)                       1ST QTR               1ST QTR        PERCENT
                                                                     2001                  2000          CHANGE
                                                                   --------              --------   -----------------
                                                                                           
Revenues:
   Technology Services                                             $ 60,660              $ 51,855                  17%
   Asset Management                                                  60,023                48,322                  24%
   Mutual Fund Services                                              32,017                30,026                   7%
   Investments in New Business                                        8,601                 8,543                   1%
                                                                   --------              --------
     Total revenues                                                $161,301              $138,746                  16%

Operating Income (Loss):
   Technology Services                                             $ 20,807              $ 18,071                  15%
   Asset Management                                                  22,559                13,474                  67%
   Mutual Fund Services                                               7,485                 5,403                  39%
   Investments in New Business                                       (3,835)               (2,854)                (34%)
   General and Administrative                                        (5,383)               (3,542)                (52%)
                                                                   --------              --------
     Income from operations                                          41,633                30,552                  36%

Other income, net                                                     3,937                 2,139                  84%
                                                                   --------              --------

Income before income taxes                                           45,570                32,691                  39%

Income taxes                                                         16,861                12,422                  36%
                                                                   --------              --------
Net Income                                                         $ 28,709              $ 20,269                  42%
                                                                   ========              ========

Diluted earnings per common share                                      $.25                  $.18                  39%
                                                                   ========              ========


Revenues increased 16 percent and earnings increased 42 percent during the first
quarter 2001 primarily because of new business generated in our primary business
lines.  Revenues and earnings increased due to increased market acceptance of
our products and services and the leveragability built within our operations.
Sales to new clients and the delivery of new products and services to existing
clients in our technology and outsourcing businesses were extremely strong.  Net
asset inflows from our high-net-worth and institutional investors increased
during the quarter, despite the recent downturn in the market.

We intend to sustain revenues and earnings growth by delivering new products and
services to our existing clients and maintaining a consistent level of new
sales.  In addition, we will effectively utilize our current infrastructure to
manage expenses across a high net incremental revenue base.  However, mergers
and acquisitions within the banking industry and any prolonged volatility in the
capital markets could negate any expected growth in revenues and earnings.

                                       13




ASSET BALANCES
(In millions)
                                                                                 As of March 31,
                                                                          ---------------------------      PERCENT
                                                                              2001               2000       CHANGE
                                                                          --------           --------  ----------------
                                                                                              
Assets invested in equity and fixed income programs                       $ 51,384           $ 45,744          12%
Assets invested in liquidity funds                                          26,691             22,177          20%
                                                                          --------           --------
   Assets under management                                                  78,075             67,921          15%

Client proprietary assets under administration                             192,218            197,476          (3%)
                                                                          --------           --------
   Assets under management and administration                             $270,293           $265,397           2%
                                                                          ========           ========


Assets under management consist of total assets invested in our equity and fixed
income investment programs and liquidity funds for which we provide management
services.  Assets under management and administration consist of total assets
for which we provide management and administrative services, including client
proprietary fund balances for which we provide administration and/or
distribution services.

TECHNOLOGY SERVICES
- -------------------

Technology Services provides trust technology outsourcing services to banks and
other financial institutions through our TRUST 3000 product line.  TRUST 3000
includes many integrated products and sub-systems that provide a complete
investment accounting and management information system for trust institutions.
Revenues are earned from monthly processing and software services fees, and
project fees associated with the conversion of new and merging clients.

Trust operations outsourcing incorporates the TRUST 3000 product line within a
package of services that includes investment management, custody and back-office
capabilities.  Through this business, we perform the trust department back-
office administration function.  Revenues are earned from processing and
management fees.



                                                        1ST QTR               1ST QTR       DOLLAR             PERCENT
                                                         2001                  2000         CHANGE             CHANGE
                                                       -------               -------   ------------------  -----------------
                                                                                               
Revenues:
Trust technology services                              $53,057               $46,661          $6,396              14%
Trust operations outsourcing                             7,603                 5,194           2,409              46%
                                                       -------               -------          ------
     Total revenues                                     60,660                51,855           8,805              17%

Expenses:
Operating and development                               31,346                25,836           5,510              21%
Sales and marketing                                      8,507                 7,948             559               7%
                                                       -------               -------          ------

     Total operating profits                           $20,807               $18,071          $2,736              15%
                                                       =======               =======          ======

     Profit margin                                          34%                   35%             --              --


The increase in Trust Technology Services revenues is primarily attributable to
increased cross sales in our core service bureau business primarily, brokerage
services.  Brokerage Revenue increased $5.5 million to $16.0 million for the
first quarter 2001 compared to $10.5 million for the first quarter 2000.
Brokerage services allow a client to execute trades through SEI's captive
broker/dealer.

Trust Operations Outsourcing revenues increased primarily due to growth in
investment management fees from our existing clients, as well as from new
clients.  We still believe that this business provides an attractive alternative
to any financial institution faced with the task of building the necessary
infrastructure to support the delivery of trust services.

The increase in operating profits and profit margin were primarily due to the
increase in revenues previously discussed and the leveragability inherent in our
current infrastructure.  As a percentage of sales, operating

                                       14


and development expenses increased to 52 percent from 50 percent and sales and
marketing expenses decreased to 14 percent from 15 percent. We expect our
recurring revenue base to increase through the delivery of new products and
services to our existing clients and the contracting of new clients for
processing services. However, consolidations among our banking clients continue
to be a major strategic issue facing this segment.

ASSET MANAGEMENT
- ----------------

Asset Management provides investment solutions through various investment
products and services distributed directly or through professional investment
advisors, financial planners, and other financial intermediaries to
institutional or high-net-worth markets.  The primary products offered include
money market funds, diversified investment strategies and portfolios and back-
office technology support.  Revenues are earned through management fees that are
based upon a fixed percentage, referred to as basis points, of the average daily
net asset value of assets under management.



                                                       1ST QTR        1ST QTR        DOLLAR           PERCENT
                                                         2001           2000         CHANGE           CHANGE
                                                       -------        -------        --------         -------
                                                                                      
Revenues:
Investment management fees                             $54,237        $43,396         $10,841           25%
Liquidity management fees                                5,786          4,926             860           17%
                                                       -------        -------         -------
     Total revenues                                     60,023         48,322          11,701           24%

Expenses:
Operating and development                               17,185         14,440           2,745           19%
Sales and marketing                                     20,279         20,408            (129)          (1%)
                                                       -------        -------

     Total operating profits                           $22,559        $13,474         $ 9,085           67%
                                                       =======        =======         =======

     Profit margin                                          38%            28%             --           --


The increase in Investment Management Fees was primarily due to significant
growth in assets under management generated through new business in both our
investment advisory and institutional asset management businesses.  Average
assets under management increased $6.1 billion or 20 percent to $37.2 billion
for the first quarter of 2001, as compared to $31.1 billion for the first
quarter of 2000.  In our investment advisory business, we continue to be
successful at recruiting new registered investment advisors. We established
approximately 500 new registered investment advisor relationships during the
first quarter of 2001, bringing our total network to about 8,100 advisors.  Our
Institutional asset management business also experienced an increase in new
business.  During the first quarter of 2001, 5 new institutional clients were
obtained.  We feel the increase in new sales in both businesses is the result of
increased market acceptance of our outsource business solution across a diverse
range of clients.

We feel the increase in new sales in both businesses is the result of increased
market acceptance of our outsource business solution across a diverse range of
clients.  The increase in Liquidity Management Fees was due to an increase in
assets under management invested in our liquidity funds from institutional
clients.  Average assets under management invested in our liquidity products
increased $2.3 billion or 36 percent to $8.5 billion for the first quarter of
2001, as compared to $6.2 billion for the first quarter of 2000.

Operating profits and profit margin increased during the first quarter due to
new business and the leveragability built into our operations.  We have been
able to control operating costs and continue to make investments in developing
new products without affecting margins.  As a percentage of sales, operating and
development expenses decreased to 28 percent from 30 percent and sales and
marketing expenses decreased to 34 percent from 42 percent.

Despite the recent volatility in the marketplace, we remain optimistic about
this business. We are confident that our sales and product strategy will
continue to provide new business to support future growth. However, continued
volatility in the capital markets could negatively affect future revenues and
profits.

                                       15


MUTUAL FUND SERVICES
- --------------------

The Mutual Fund Services segment provides administration and distribution
services to proprietary mutual funds created for banks, insurance firms, and
investment management companies.  These services include fund administration and
accounting, legal services, shareholder recordkeeping, and marketing.  Revenues
are based upon a fixed percentage, referred to as basis points, of the average
daily asset value of the proprietary funds.



                                                       1ST QTR               1ST QTR        DOLLAR             PERCENT
                                                         2001                  2000         CHANGE              CHANGE
                                                       -------               -------   ------------------   -----------------
                                                                                                
Total revenues                                         $32,017               $30,026         $1,991                7%

Expenses:
Operating and development                               19,413                19,002            411                2%
Sales and marketing                                      5,119                 5,621           (502)              (9%)
                                                       -------               -------         ------

     Total operating profits                           $ 7,485               $ 5,403         $2,082               39%
                                                       =======               =======         ======

     Profit margin                                          23%                   18%            --               --


The increase in Mutual fund services revenues was fueled by growth in average
proprietary fund balances, which increased $10.5 billion or 6 percent to $198.2
billion for the first quarter of 2001 versus $187.7 billion for the first
quarter of 2000.  The increase in revenues resulted from new sales in the non-
bank investment management and offshore markets.

Profit margin increased to 23 percent from 18 percent.  The increase in profit
margin was due to an increase in revenue and the leveragability built into our
operations.  As a percentage of sales, operating and development expenses
decreased to 61 percent from 63 percent and sales and marketing expenses
decreased to 16 percent from 18 percent.

The demand for our services in the investment management, offshore and hedge
fund markets has steadily risen.  We will continue to focus our efforts in these
markets because we believe these markets hold the greatest long-term growth
potential for our services.  Conversely, consolidations in the banking industry
or a significant and prolonged unfavorable change in the financial securities
markets could negatively affect revenues and profits.


INVESTMENTS IN NEW BUSINESS
- ---------------------------

Investments in New Business include our global asset management initiatives that
incorporate our investment products and services to provide investment solutions
to institutional and high-net-worth investors outside the United States
Revenues are primarily earned through management fees that are based upon a
fixed percentage, referred to as basis points, of the average daily net asset
value of assets under management.

                                       16




                                            1ST QTR    1ST QTR   DOLLAR    PERCENT
                                             2001       2000     CHANGE    CHANGE
                                           -------    -------    ------   -------
                                                              
Total revenues                             $ 8,601    $ 8,543    $   58         1%

Expenses:
Operating and development                    8,085      7,004     1,081        15%
Sales and marketing                          4,351      4,393       (42)       (1%)
                                           -------    -------

     Total operating losses                $(3,835)   $(2,854)   $ (981)      (34%)
                                           =======    =======    ======      ======

     Profit margin                             (45%)      (33%)      --        --


Although revenues were flat for the first quarter 2001, assets under management
from our offshore enterprises increased $1.0 billion to $4.7 billion during the
first quarter 2001, compared to $3.7 billion in the first quarter 2000. The
first quarter 2000 revenue included our Canadian consulting business that was
sold later in 2000.   Excluding those revenues, revenues for the first quarter
would have increased 27 percent.  Our efforts are currently focused on
Europe/South Africa, Asia, and Latin America.

We gained initial market acceptance for our U.K. pension plan initiative, which
offers a comprehensive multi-manager based solution to U.K. pension funds.
Three commitments for $125 million in assets have been made in the first
quarter.

The pace of global asset gathering and revenue recognition continues to
accelerate, and we also accelerated the pace of our investment efforts
especially in the European region.  We plan to undertake new initiatives later
in the year, directed at high net worth investors in Europe.  We believe that
global expansion is an area of significant long-term growth for our firm.  We
will continue to make significant investments in our global initiatives and
expect to incur losses throughout the remainder of the year in this segment.


GENERAL & ADMINISTRATIVE
- ------------------------

General and administrative expenses increased 52 percent to $5,383 for the first
quarter in 2001, as compared to $3,542 for the first quarter in 2000.  As a
percentage of total consolidated revenues, general and administrative expenses
were 3 percent for the first quarter in 2001 and 2000.

OTHER INCOME
- ------------

Other income on the accompanying Consolidated Statements of Income consist of
the following:



                                                                                     1ST QTR               1ST QTR
                                                                                       2001                 2000
                                                                                      ------               ------
                                                                                         
Equity in the earnings of unconsolidated affiliate                                    $2,238               $1,753
Interest income                                                                        2,249                  985
Interest expense                                                                        (550)                (599)
                                                                                      ------               ------

Total other income, net                                                               $3,937               $2,139
                                                                                      ======               ======


Equity in the earnings of unconsolidated affiliate on the accompanying
Consolidated Statements of Income includes our less than 50 percent ownership in
the general partnership of LSV Asset Management ("LSV") (See Note 5 of the Notes
to Consolidated Financial Statements).  Our interest in LSV's net earnings was
$2,238 for the first quarter in 2001 and $1,753 for the first quarter in 2000.
The increase in LSV's net earnings is due to an increase in assets under
management.  Average assets under management for LSV were $5.7 billion for the
first quarter in 2001, as compared to $4.2 billion for the first quarter in
2000.

Interest income for the first quarter in 2001 was $2,249, as compared to $985
for the first quarter in 2000.  Interest income is earned based upon the amount
of cash that is invested daily and fluctuations in interest

                                       17


income recognized for one period in relation to another is due to changes in the
average cash balance invested for the period.

Interest expense for the first quarter in 2001 was $550, as compared to $599 for
the first quarter in 2000.  Interest expense primarily relates to our long-term
debt and borrowings on our line of credit.

LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------



                                                                                        Three Months
                                                                        ------------------------------------------
                                                                                       Ended March 31,
                                                                        ------------------------------------------
                                                                                         
                                                                                      2001                  2000
                                                                                    --------              --------

Net cash provided by operating activities                                           $ 15,782              $  1,856
Net cash used in investing activities                                                (18,864)               (1,056)
Net cash used in financing activities                                                (45,335)              (16,990)
                                                                                    --------              --------
Net decrease in cash and cash equivalents                                            (48,417)              (16,190)

Cash and cash equivalents, beginning of period                                       159,576                73,206
                                                                                    --------              --------
Cash and cash equivalents, end of period                                            $111,159              $ 57,016
                                                                                    ========              ========


Cash requirements and liquidity needs are primarily funded through operations
and our capacity for additional borrowing.  We currently have a line of credit
agreement that provides for borrowings of up to $50.0 million.  The availability
of the line of credit is subject to compliance with certain covenants set forth
in the agreement (See Note 7 of the Notes to Consolidated Financial Statements).
At March 31, 2001, the unused sources of liquidity consisted of unrestricted
cash and cash equivalents of $100.3 million and the unused portion of the line
of credit of $50.0 million.

The increase in cash flow from operations was primarily due to the tax benefit
received from stock options exercised as a result of the rise in our stock price
during the past 3 years. The tax benefit on stock options exercised was
previously included in cash flows from financing activities.  The prior year has
been reclassified to conform with the current year presentation. In addition, an
increase in income and annual compensation payments affected cash flows from
operations for the first quarter of 2001 and 2000.  Annual compensation and
bonus payments are paid in the first quarter of the following year and
negatively affected cash flows from operations in the first quarter of 2001 and
2000.

Cash flows from investing activities are principally affected by capital
expenditures, including capitalized software development costs.  Capital
expenditures in the first quarter of 2001 primarily related to purchases of
equipment and furniture associated with the expansion of our corporate
headquarters.  A parking structure was completed during the first quarter of
2001 and we are currently constructing two additional buildings that is expected
to be completed by the end of 2001.  Total cost of the expansion is estimated at
$25.0 million.  The additional buildings are necessary due to the recent growth
experienced in our primary business lines.  Another factor that affected cash
flow from investing activities was the initiation of a new Company-sponsored
mutual fund in which we invested approximately $11.0 million.  We expect these
funds will remain invested until the third quarter 2001.

Cash flows from financing activities are primarily affected by debt and equity
transactions.  Principal payments on our long-term debt are made annually from
the date of issuance while interest payments are made semi-annually.  Principal
and interest payments were made in the first quarter of 2001 and 2000 (See Note
8 of the Notes to Consolidated Financial Statements).  We continued our common
stock repurchase program.  We purchased approximately 1,227,000 shares of our
common stock at a cost of $46.3 million during the first quarter of 2001.  As of
April 30, 2001, we still had $48.3 million remaining authorized for the purchase
of our common stock.  Cash dividends of $.04 per share were paid in the first
quarter of 2001 and $.03 in the first quarter of 2000.  The Board of Directors
has indicated its intention to continue making cash dividend payments.

Our operating cash flow, borrowing capacity, and liquidity should provide
adequate funds for continuing operations, continued investment in new products
and equipment, our common stock repurchase program,

                                       18


expansion of our corporate campus, future dividend payments, and principal and
interest payments on our long-term debt.


FORWARD-LOOKING INFORMATION
- ---------------------------

The Private Securities Litigation Reform Act of 1995 provides a "safe harbor"
for forward-looking statements.  Certain information contained in this
discussion is or may be considered forward-looking.  Forward-looking statements
relate to future operations, strategies, financial results or other
developments.  Forward-looking statements are based upon estimates and
assumptions that involve certain risks and uncertainties, many of which are
beyond our control or are subject to change.  Although we believe our
assumptions are reasonable, they could be inaccurate.  Our actual future
revenues and income could differ materially from our expected results.  We have
no obligation to publicly update or revise any forward-looking statements.


QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.
- ----------------------------------------------------------

We do have a number of satellite offices located outside the United States that
conduct business in local currencies of that country.  All foreign operations
aggregate approximately 5 percent of total consolidated revenues.  Due to this
limited activity, we do not expect any material loss with respect to foreign
currency risk.

Exposure to market risk for changes in interest rates relate primarily to our
investment portfolio and long-term debt.  We do not undertake any specific
actions to cover our exposure to interest rate risk and are not a party to any
interest rate risk management transactions.  We place our investments in
financial instruments that meet high credit quality standards.  We are adverse
to principal loss and ensure the safety and preservation of our invested funds
by limiting default risk, market risk, and reinvestment risk.  The interest rate
on our long-term debt is fixed and is not traded on any established market.  We
have no cash flow exposure due to rate changes for our long-term debt.

                                       19


PART II.  OTHER INFORMATION
- --------  -----------------

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K
- -------  --------------------------------


         (a) The following is a list of exhibits filed as part of the Form 10-Q.

             None.

         (b) Reports on Form 8-K

             There were no reports on Form 8-K filed by the Company during the
             quarter ended March 31, 2001.

                                       20


                                   SIGNATURES




Pursuant to the requirements 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.



                                       SEI INVESTMENTS COMPANY



Date           May 14, 2001            By      /s/ Kathy Heilig
    --------------------------           -----------------------
                                                   Kathy Heilig
                                                   Vice President and Controller


                                       21