UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 -------- FORM N-CSR -------- CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES INVESTMENT COMPANY ACT FILE NUMBER 811-4283 SEI INDEX FUNDS (Exact name of registrant as specified in charter) -------- c/o CT Corporation 101 Federal St. Boston, MA 02110 (Address of principal executive offices) (Zip code) SEI Investments One Freedom Valley Drive Oaks, PA 19456 (Name and address of agent for service) REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: 1-800-342-5734 DATE OF FISCAL YEAR END: MARCH 31, 2006 DATE OF REPORTING PERIOD: MARCH 31, 2006 ITEM 1. REPORTS TO STOCKHOLDERS. [LOGO OMITTED] SEI New Ways New Answers - -------------------------------------------------------------------------------- SEI Index Funds - -------------------------------------------------------------------------------- Annual Report as of March 31, 2006 - -------------------------------------------------------------------------------- S&P 500 Index Fund Bond Index Fund - -------------------------------------------------------------------------------- TABLE OF CONTENTS - ------------------------------------------------------------ Management's Discussion and Analysis of Fund Performance - ------------------------------------------------------------ S&P 500 Index Fund 1 - ------------------------------------------------------------ Bond Index Fund 2 - ------------------------------------------------------------ Schedule of Investments/Statement of Net Assets 4 - ------------------------------------------------------------ Statement of Assets and Liabilities 18 - ------------------------------------------------------------ Statements of Operations 19 - ------------------------------------------------------------ Statements of Changes in Net Assets 20 - ------------------------------------------------------------ Financial Highlights 21 - ------------------------------------------------------------ Notes to Financial Statements 22 - ------------------------------------------------------------ Report of Independent Registered Public Accounting Firm 27 - ------------------------------------------------------------ Trustees and Officers of the Trust 28 - ------------------------------------------------------------ Disclosure of Fund Expenses 31 - ------------------------------------------------------------ Board of Trustees Considerations in Approving the Advisory and Sub-Advisory Agreements 32 - ------------------------------------------------------------ Notice to Shareholders 34 - ------------------------------------------------------------ The Trust files its complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year on Form N-Q within sixty days after the end of the period. The Trust's Form N-Q is available on the Commission's website at http://www.sec.gov, and may be reviewed and copied at the Commission's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. A description of the policies and procedures that the Trust uses to determine how to vote proxies relating to portfolio securities, as well as information relating to how a Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30, is available (i) without charge, upon request, by calling 1-800-342-5734; and (ii) on the Commission's website at http://www.sec.gov. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INDEX FUNDS -- MARCH 31, 2006 S&P 500 Index Fund Objectives The S&P 500 Index Fund (the "Fund") seeks to provide investment results that correspond to the aggregate price and dividend performance of the securities in the S&P 500 Composite Stock Price Index (the "Index"). The Index is a capitalization-weighted index of 500 stocks intended to be a representative sample of leading companies in leading industries within the U.S. economy. Stocks in the Index are chosen for market size (large-cap), liquidity, and industry group representation. Strategy The Fund attempts to match the performance of the widely followed Index by replicating its composition in full. The fifty largest stocks in the Index account for approximately 50% of the weighting of the Index. Deviation of performance between the Fund and the Index, measured as tracking error, is typically attributable to trading costs and cash reserves held for liquidity needs. The presence of cash in the Fund may result in underperformance relative to the Index in rising markets and out-performance in declining markets. To mitigate these effects, the Fund may use stock index futures to hedge its cash position. Futures contracts enable the Fund to maintain exposure to the market with reduced trading expenses, since the cost of the futures contract is relatively nominal. The value of stock index futures held by the Fund may not exceed 20% of the Fund's assets. The Fund may also invest in exchange-traded funds and engage in swaps. Analysis The S&P 500 Index Fund, Class A, returned a comparable 11.32% for the fiscal year. For the fiscal year ended March 31, 2006, the Index posted double digit gains, returning 11.73%. However, large cap securities trailed their small cap counterparts and non-U.S. securities. During the period, interest rates and energy prices were two of the biggest drivers of market uncertainty and volatility. The Federal Reserve raised the federal fund rate eight times during the fiscal year to 4.75%, which is 200 basis points higher than March 31, 2005. During the same period, oil prices continued to rise. In addition, Hurricane Katrina and Rita disrupted the refineries in the Gulf of Mexico and interrupted already stretched oil refining capacity, which in turn drove gasoline prices higher. Investors worried that higher fuel prices and interest rates would start to eat into discretionary income and spending. In particular, the consumer discretionary and consumer staple sectors were hit the hardest and were the two worst performing sectors for the year. The energy sector again was the best performing sector, followed by the financial sector. A pick-up in capital market and mergers & acquisition activity boosted financial stocks returns. Given that the Fund's mandate is to track the Index, the Fund was in line with the Index. S&P 500 Index Fund: AVERAGE ANNUAL TOTAL RETURN 1 - -------------------------------------------------------------------------------- Annualized Annualized Annualized Annualized One Year 3 Year 5 Year 10 Year Inception Return Return Return Return to Date - -------------------------------------------------------------------------------- S&P 500 Index Fund, Class A 11.32% 16.77% 3.54% 8.51% 8.46% - -------------------------------------------------------------------------------- S&P 500 Index Fund, Class E 11.49% 16.94% 3.71% 8.69% 11.99% - -------------------------------------------------------------------------------- S&P 500 Index Fund, Class I 11.02% 16.46% n/a n/a 8.66% - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Comparison of Change in the Value of a $10,000 Investment in the S&P 500 Index Fund, Class A, versus the S&P 500 Index [GRAPH OMITTED] PLOT POINTSFOLLOW: SEI Bond Index, Class A S&P 500 Index 3/96 $10,000 $10,000 3/97 11,922 11,983 3/98 17,577 17,735 3/99 20,758 21,009 3/00 24,395 24,778 3/01 19,011 19,406 3/02 18,961 19,452 3/03 14,210 14,636 3/04 19,129 19,776 3/05 20,325 21,099 3/06 22,625 23,574 S&P 500 Index -- $23,574 S&P 500 Index Fund, Class A -- $22,625 1 For the period ended March 31, 2006. Past performance is no indication of future performance. Class A shares were offered beginning 02/28/96. Class E shares were offered beginning 07/31/85. Class I shares were offered beginning 06/28/02. Effective 07/31/97, the Board of Trustees approved the renaming of Class A and Class E shares to Class E and Class A shares, respectively. In addition, returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 1 SEI INDEX FUNDS -- MARCH 31, 2006 Bond Index Fund Objectives The Bond Index Fund (the "Fund") seeks to provide investment results that correspond to the aggregate price and interest performance of the Lehman U.S. Aggregate Bond Index (the "Lehman Aggregate"). The Lehman Aggregate is made up of the Government/Credit Index, the Mortgage-Backed Securities Index, the Asset-Backed Securities Index and the Commercial Mortgage-Backed Index. The Lehman Aggregate includes fixed rate debt issues rated investment grade (Baa3) or higher by Moody's Investor Service. If both Moody's and S&P provide a rating for an issue, then the lower of the two ratings will be used. All issues have at least one year to maturity and an outstanding par value of at least $200 million. Price, coupon and total return are reported for all sectors on a month-end basis. All returns are market value weighted inclusive of accrued interest. Strategy The Fund will be managed in a manner designed to generally reflect the current performance of the Lehman Aggregate. Obligations included in the Lehman Aggregate have been categorized into sectors, which have been organized on the basis of type of issuer and then further classified by quality and remaining term to maturity. The Fund's ability to duplicate the performance of the Lehman Aggregate will depend to some level on the size and timing of cash flows into and out of the Fund, the level of the Fund's expenses, and the capability of the Fund's sub-advisers to select a representative sample of the securities included in the Lehman Aggregate. The percentage of the Fund's assets to be invested in the aggregate obligations included in a particular sector of the Lehman Aggregate will approximate, to the maximum extent feasible, the percentage such sector represents in that Lehman Aggregate. The ability of the Fund to duplicate the Lehman Aggregate's performance can be influenced by the Fund's asset size. To the extent that the size of Fund assets limits the number of issues that the Fund can purchase, there is more potential for deviation from the Lehman Aggregate's performance than at larger asset levels. Under these circumstances, the Fund will implement strategies designed to minimize this potential for greater deviation. The Fund may also invest in exchange-traded funds and engage in swaps. Analysis The Bond Index Fund, Class A, registered a 1.79% return for the fiscal year. The investment-grade U.S. fixed income market returned 2.26% for the fiscal year ended March 31, 2006, as measured by the Lehman Aggregate. This marked the seventh consecutive year of positive returns for the U.S. bond market, even as rates rose across the curve for the period. The 2-year note, which is most sensitive to the Federal Open Market Committee ("FOMC") interest rate policy changes, increased 104 basis points (bps) for the period, bringing the yield to 4.81%. The ongoing battle between economic growth and inflation fears kept the FOMC to its measured pace. The Fed increased the overnight lending rate by 200 bps through quarter point increments. The move to higher interest rates was met with resistance along the long end of the curve as longer term rates were supported by the unabating demand from investors. All the major sectors except U.S. Corporate Investment Grade Credit, which was plagued with uncertainties surrounding leveraged buyouts and event risk, outperformed U.S. Treasuries for the period as spreads tightened across the sectors. The Asset-Backed Security sector was the best performing sector as technicals and fundamentals remained strong. The Mortgage-Backed Security and Commercial Mortgage-Backed Security sectors also contributed positive market performance as volatility remained low and consumer balance sheets remained healthy. - -------------------------------------------------------------------------------- 2 SEI Index Funds / Annual Report / March 31, 2006 MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INDEX FUNDS -- MARCH 31, 2006 AVERAGE ANNUAL TOTAL RETURN 1 - -------------------------------------------------------------------------------- Annualized Annualized Annualized Annualized One Year 3 Year 5 Year 10 Year Inception Return Return Return Return to Date - -------------------------------------------------------------------------------- Bond Index Fund, Class A 1.79% 2.45% 4.60% 5.86% 6.90% - -------------------------------------------------------------------------------- Comparison of Change in the Value of a $10,000 Investment in the Bond Index Fund, Class A, versus the Lehman U.S. Aggregate Bond Index Bond Index Fund, Class A -- $17,676 Lehman U.S. Aggregate Bond Index -- $18,400 [GRAPH OMITTED] PLOT POINTS FOLLOW: Bond Index Fund, Class A Lehman U.S. Aggregate Bond Index 3/96 $10,000 $10,000 3/97 10,436 10,491 3/98 11,668 11,750 3/99 12,398 12,511 3/00 12,599 12,747 3/01 14,114 14,344 3/02 14,787 15,110 3/03 16,439 16,876 3/04 17,241 17,787 3/05 17,366 17,994 3/06 17,676 18,400 1 For the period ended March 31, 2006. Past performance is no indication of future performance. The Fund was offered beginning 05/19/86. In addition, returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 3 SCHEDULE OF INVESTMENTS S&P 500 Index Fund March 31, 2006 - ------------------------------------------------------------- [BAR CHART OMITTED] PLOT POINTS FOLLOW: SECTOR WEIGHTINGS (UNAUDITED)++: 18.4% FINANCIALS 13.9% INFORMATION TECHNOLOGY 11.3% HEALTH CARE 10.0% INDUSTRIALS 8.9% CONSUMER DISCRETIONARY 8.5% ENERGY 8.1% CONSUMER STAPLES 5.8% CORPORATE OBLIGATIONS 4.1% SHORT-TERM INVESTMENTS 2.9% TELECOMMUNICATION SERVICES 2.7% UTILITIES 2.7% MATERIALS 1.2% ASSET-BACKED SECURITIES 0.6% MASTER NOTES 0.6% COMMERCIAL PAPER 0.2% TIME DEPOSIT 0.1% U.S. TREASURY OBLIGATIONS ++PERCENTAGES BASED ON TOTAL INVESTMENTS. - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- COMMON STOCK -- 97.6% CONSUMER DISCRETIONARY -- 9.9% Amazon.com (D)* 59,200 $ 2,161 Apollo Group, Cl A (D)* 27,203 1,428 Autonation (D)* 34,120 735 Autozone* 10,494 1,046 Bed Bath & Beyond* 53,833 2,067 Best Buy (D) 78,041 4,365 Big Lots (D)* 21,513 300 Black & Decker 14,809 1,287 Brunswick 18,415 716 Carnival (D) 84,284 3,993 CBS, Cl B 150,001 3,597 Centex 24,044 1,491 Circuit City Stores 29,654 726 Clear Channel Communications 99,163 2,877 Coach* 73,610 2,546 Comcast, Cl A* 410,396 10,736 Cooper Tire & Rubber 11,178 160 Darden Restaurants* 24,413 1,002 Dillard's, Cl A 11,805 307 Dollar General 62,390 1,103 Dow Jones (D) 11,163 439 DR Horton (D) 52,149 1,732 E.W. Scripps, Cl A (D) 16,100 720 Eastman Kodak (D) 54,310 1,545 Family Dollar Stores (D) 29,322 780 Federated Department Stores 52,282 3,817 Ford Motor (D) 357,709 2,847 Fortune Brands 28,119 2,267 Gannett (D) 46,347 2,777 Gap 107,531 2,009 General Motors (D) 108,548 2,309 Genuine Parts 33,136 1,452 Goodyear Tire & Rubber (D)* 33,293 482 H&R Block 61,404 1,329 Harley-Davidson (D) 52,308 2,714 Harman International Industries 12,300 1,367 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Harrah's Entertainment 35,287 $ 2,751 Hasbro 33,891 715 Hilton Hotels 61,987 1,578 Home Depot (D) 410,464 17,363 International Game Technology 63,156 2,224 Interpublic Group (D)* 81,601 780 J.C. Penney 44,580 2,693 Johnson Controls 37,219 2,826 Jones Apparel Group 22,390 792 KB Home 14,655 952 Knight Ridder (D) 13,077 827 Kohl's (D)* 66,147 3,507 Leggett & Platt (D) 34,154 832 Lennar, Cl A (D) 26,307 1,588 Limited Brands 66,827 1,635 Liz Claiborne (D) 20,323 833 Lowe's (D) 150,018 9,667 Marriott International, Cl A 30,870 2,118 Mattel 76,318 1,384 Maytag 15,143 323 McDonald's 243,170 8,355 McGraw-Hill 70,421 4,058 Meredith 7,963 444 New York Times, Cl A (D) 27,492 696 Newell Rubbermaid 52,047 1,311 News, Cl A* 460,633 7,651 Nike, Cl B (D) 36,347 3,093 Nordstrom (D) 40,902 1,603 Office Depot (D)* 57,120 2,127 OfficeMax 13,393 404 Omnicom Group 34,302 2,856 Pulte Homes 40,555 1,558 RadioShack (D) 25,425 489 Sears Holdings (D)* 19,465 2,566 Sherwin-Williams 20,616 1,019 Snap-On 10,953 418 Stanley Works (D) 13,779 698 Staples 139,814 3,568 Starbucks* 147,958 5,569 Starwood Hotels & Resorts Worldwide 41,435 2,806 Target (D) 168,719 8,775 Tiffany (D) 26,973 1,013 Time Warner 870,714 14,619 TJX 86,267 2,141 Tribune (D) 49,005 1,344 Univision Communications, Cl A* 42,867 1,478 VF 16,914 962 Viacom, Cl B* 149,701 5,808 Walt Disney (D)* 369,527 10,306 Wendy's International 21,808 1,353 Whirlpool 12,594 1,152 Yum! Brands 53,035 2,591 ---------- 229,448 ---------- - -------------------------------------------------------------------------------- 4 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- CONSUMER STAPLES -- 9.0% Alberto-Culver 14,305 $ 633 Albertson's 70,733 1,816 Altria Group 400,456 28,376 Anheuser-Busch (D) 150,374 6,431 Archer-Daniels-Midland 125,466 4,222 Avon Products (D) 85,951 2,679 Brown-Forman, Cl B (D) 15,676 1,207 Campbell Soup 34,975 1,133 Clorox 28,242 1,690 Coca-Cola 398,096 16,668 Coca-Cola Enterprises 57,017 1,160 Colgate-Palmolive 98,893 5,647 ConAgra Foods 99,652 2,139 Constellation Brands, Cl A* 37,100 929 Costco Wholesale (D) 90,818 4,919 CVS 156,883 4,686 Dean Foods* 25,200 979 Estee Lauder, Cl A 22,900 852 General Mills 68,391 3,466 Hershey (D) 33,912 1,771 HJ Heinz 64,249 2,436 Kellogg 46,867 2,064 Kimberly-Clark 88,399 5,109 Kroger (D)* 139,259 2,835 McCormick 25,361 859 Molson Coors Brewing, Cl B 10,823 743 Pepsi Bottling Group 26,236 797 PepsiCo 317,867 18,370 Procter & Gamble 635,076 36,593 Reynolds American (D) 16,120 1,701 Safeway 86,246 2,166 Sara Lee 142,487 2,548 Supervalu 25,652 791 Sysco (D) 118,820 3,808 Tyson Foods, Cl A (D) 47,490 652 UST (D) 31,040 1,291 Wal-Mart Stores 480,611 22,704 Walgreen 194,244 8,378 Whole Foods Market (D) 25,900 1,721 WM Wrigley Jr. (D) 34,608 2,215 ---------- 209,184 ---------- ENERGY -- 9.5% Amerada Hess 15,325 2,182 Anadarko Petroleum 44,190 4,464 Apache 63,400 4,153 Baker Hughes (D) 65,634 4,489 BJ Services (D) 62,156 2,151 Burlington Resources 72,114 6,628 Chesapeake Energy 71,700 2,252 Chevron 427,197 24,765 ConocoPhillips 266,403 16,823 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Devon Energy (D) 84,813 $ 5,188 El Paso (D) 126,494 1,524 EOG Resources (D) 46,544 3,351 Exxon Mobil 1,171,736 71,312 Halliburton 99,091 7,236 Kerr-McGee 22,228 2,122 Kinder Morgan (D) 19,549 1,798 Marathon Oil 70,428 5,365 Murphy Oil (D) 31,063 1,548 Nabors Industries (D)* 30,339 2,172 National Oilwell Varco (D)* 33,534 2,150 Noble (D) 26,271 2,131 Occidental Petroleum 82,652 7,658 Rowan* 20,597 905 Schlumberger (D) 113,381 14,351 Sunoco 25,357 1,967 Transocean* 62,578 5,025 Valero Energy 119,308 7,132 Weatherford International (D)* 66,954 3,063 Williams (D) 114,065 2,440 XTO Energy 69,735 3,038 ---------- 219,383 ---------- FINANCIALS -- 20.5% ACE 61,885 3,219 Aflac 96,608 4,360 Allstate 123,759 6,449 AMBAC Financial Group (D) 19,714 1,569 American Express 237,515 12,481 American International Group 501,171 33,122 Ameriprise Financial 48,084 2,167 AmSouth Bancorp (D) 64,765 1,752 AON 61,829 2,566 Apartment Investment & Management, Cl A+ (D) 18,062 847 Archstone-Smith Trust+ 40,968 1,998 Bank of America 896,770 40,839 Bank of New York 148,035 5,335 BB&T (D) 102,697 4,026 Bear Stearns 22,898 3,176 Boston Properties+ 13,200 1,231 Capital One Financial (D) 57,733 4,649 Charles Schwab 198,027 3,408 Chubb 38,378 3,663 Cincinnati Financial 33,079 1,392 CIT Group 37,408 2,002 Citigroup 961,746 45,423 Comerica 30,983 1,796 Compass Bancshares 23,483 1,188 Countrywide Financial 116,971 4,293 E*Trade Financial* 80,239 2,165 Equity Office Properties Trust+ 76,173 2,558 Equity Residential+ 55,740 2,608 - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 5 SCHEDULE OF INVESTMENTS S&P 500 Index Fund (Continued) March 31, 2006 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Fannie Mae (D) 185,681 $ 9,544 Federated Investors, Cl B 16,045 627 Fifth Third Bancorp (D) 106,611 4,196 First Horizon National 23,615 984 Franklin Resources 29,315 2,763 Freddie Mac 133,659 8,153 Genworth Financial, Cl A 72,300 2,417 Golden West Financial (D) 49,171 3,339 Goldman Sachs Group 83,662 13,132 Hartford Financial Services Group 58,086 4,679 Huntington Bancshares 47,775 1,153 Janus Capital Group (D) 40,077 929 Jefferson-Pilot (D) 24,826 1,389 JPMorgan Chase 673,172 28,031 Keycorp (D) 77,783 2,862 Kimco Realty+ 37,000 1,504 Lehman Brothers Holdings 51,853 7,494 Lincoln National (D) 32,602 1,780 Loews 25,991 2,630 M&T Bank (D) 14,961 1,708 Marsh & McLennan (D) 104,950 3,081 Marshall & Ilsley 39,170 1,707 MBIA 25,327 1,523 Mellon Financial 77,902 2,773 Merrill Lynch 176,247 13,881 Metlife 145,405 7,033 MGIC Investment 16,895 1,126 Moody's 47,308 3,381 Morgan Stanley 207,561 13,039 National City (D) 106,248 3,708 North Fork Bancorporation 89,189 2,571 Northern Trust (D) 35,505 1,864 Plum Creek Timber+ 34,835 1,286 PNC Financial Services Group 56,094 3,776 Principal Financial Group 53,648 2,618 Progressive 37,767 3,938 Prologis+ 46,760 2,502 Prudential Financial 94,966 7,199 Public Storage+ 15,628 1,269 Regions Financial (D) 87,523 3,078 Safeco 23,038 1,157 Simon Property Group+ (D) 34,809 2,929 SLM 80,043 4,157 Sovereign Bancorp 66,766 1,463 St. Paul Travelers 133,532 5,580 State Street 63,891 3,861 SunTrust Banks (D) 71,196 5,180 Synovus Financial 58,975 1,598 T Rowe Price Group 24,554 1,920 Torchmark (D) 19,705 1,125 UnumProvident (D) 56,352 1,154 US Bancorp 345,606 10,541 Vornado Realty Trust+ (D) 22,814 2,190 Wachovia 311,326 17,450 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Washington Mutual (D) 190,319 $ 8,111 Wells Fargo 323,753 20,678 XL Capital, Cl A 34,005 2,180 Zions Bancorporation 19,260 1,593 ---------- 473,816 ---------- HEALTH CARE -- 12.6% Abbott Laboratories 297,468 12,633 Aetna 108,802 5,347 Allergan 29,083 3,156 AmerisourceBergen 39,296 1,897 Amgen* 225,793 16,426 Applera - Applied Biosystems Group 35,557 965 Barr Pharmaceuticals (D)* 20,300 1,278 Bausch & Lomb 10,174 648 Baxter International 124,438 4,829 Becton Dickinson 46,562 2,867 Biogen Idec* 65,998 3,109 Biomet (D)* 46,036 1,635 Boston Scientific (D)* 113,496 2,616 Bristol-Myers Squibb 375,901 9,251 C.R. Bard (D) 19,288 1,308 Cardinal Health 80,955 6,033 Caremark Rx* 86,073 4,233 Chiron (D)* 20,597 944 Cigna 23,257 3,038 Coventry Health Care* 30,413 1,642 Eli Lilly 216,830 11,991 Express Scripts (D)* 28,076 2,468 Fisher Scientific International (D)* 23,064 1,569 Forest Laboratories* 62,363 2,783 Genzyme* 49,832 3,350 Gilead Sciences* 88,688 5,518 Guidant 65,014 5,075 HCA 78,269 3,584 Health Management Associates, Cl A 46,737 1,008 Hospira* 30,204 1,192 Humana* 30,697 1,616 IMS Health 35,795 922 Johnson & Johnson 571,056 33,818 King Pharmaceuticals* 45,686 788 Laboratory of America Holdings (D)* 23,263 1,360 Manor Care (D) 14,914 661 McKesson 58,769 3,064 Medco Health Solutions* 58,458 3,345 Medimmune* 49,063 1,795 Medtronic 233,317 11,841 Merck 419,717 14,787 Millipore* 9,793 715 Mylan Laboratories 41,311 967 Patterson (D)* 26,100 919 PerkinElmer 24,640 578 Pfizer 1,420,704 35,404 - -------------------------------------------------------------------------------- 6 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Quest Diagnostics 30,724 $ 1,576 Schering-Plough 283,872 5,391 St. Jude Medical* 70,294 2,882 Stryker 56,842 2,520 Tenet Healthcare* 88,576 654 Thermo Electron* 30,515 1,132 UnitedHealth Group 260,247 14,537 Waters (D)* 20,997 906 Watson Pharmaceuticals (D)* 18,771 539 WellPoint* 127,661 9,885 Wyeth 259,866 12,609 Zimmer Holdings* 47,555 3,215 ---------- 290,819 ---------- INDUSTRIALS -- 11.2% 3M 145,982 11,049 Allied Waste Industries (D)* 41,242 505 American Power Conversion 32,346 748 American Standard 32,933 1,412 Avery Dennison 20,915 1,223 Boeing 154,732 12,058 Burlington Northern Santa Fe 71,524 5,960 Caterpillar 128,697 9,242 Cendant 193,411 3,356 Cintas* 26,107 1,113 Cooper Industries, Cl A (D) 16,993 1,477 CSX 42,125 2,519 Cummins 8,785 923 Danaher 45,548 2,895 Deere 46,051 3,640 Dover 39,037 1,896 Eaton 29,069 2,121 Emerson Electric 78,903 6,599 Equifax (D) 24,625 917 FedEx 58,305 6,585 Fluor (D) 16,422 1,409 General Dynamics 76,826 4,915 General Electric 2,008,007 69,838 Goodrich 23,020 1,004 Honeywell International 159,355 6,816 Illinois Tool Works 39,362 3,791 Ingersoll-Rand, Cl A 61,706 2,579 ITT Industries 35,400 1,990 L-3 Communications Holdings 23,223 1,992 Lockheed Martin 68,794 5,169 Masco (D) 78,868 2,562 Monster Worldwide (D)* 23,034 1,148 Navistar International* 11,632 321 Norfolk Southern 79,126 4,278 Northrop Grumman (D) 67,319 4,597 Paccar 32,463 2,288 Pall 23,495 733 Parker Hannifin 23,014 1,855 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Pitney Bowes 42,375 $ 1,819 Raytheon (D) 85,568 3,922 Robert Half International (D) 32,027 1,237 Rockwell Automation (D) 33,526 2,411 Rockwell Collins 33,678 1,898 RR Donnelley & Sons 40,611 1,329 Ryder System 12,154 544 Southwest Airlines 135,849 2,444 Textron 24,749 2,311 Tyco International 386,731 10,395 Union Pacific 50,847 4,747 United Parcel Service, Cl B (D) 209,590 16,637 United Technologies 194,883 11,297 Waste Management 106,028 3,743 WW Grainger 14,365 1,082 ---------- 259,339 ---------- INFORMATION TECHNOLOGY -- 15.6% ADC Telecommunications (D)* 22,067 565 Adobe Systems* 115,136 4,021 Advanced Micro Devices* 92,263 3,059 Affiliated Computer Services, Cl A* 23,249 1,387 Agilent Technologies* 82,306 3,091 Altera (D)* 66,651 1,376 Analog Devices 70,299 2,692 Andrew (D)* 30,685 377 Apple Computer* 163,392 10,248 Applied Materials* 304,450 5,331 Applied Micro Circuits* 57,797 235 Autodesk 43,217 1,665 Automatic Data Processing 111,250 5,082 Avaya (D)* 80,168 906 BMC Software (D)* 41,249 893 Broadcom, Cl A* 84,536 3,649 CA (D) 86,027 2,341 Ciena (D)* 109,300 569 Cisco Systems* 1,187,963 25,743 Citrix Systems* 34,242 1,298 Computer Sciences* 35,833 1,990 Compuware* 73,375 574 Comverse Technology* 38,071 896 Convergys (D)* 26,476 482 Corning* 296,678 7,984 Dell* 454,874 13,537 eBay (D)* 223,232 8,719 Electronic Arts* 59,078 3,233 Electronic Data Systems 98,702 2,648 EMC* 456,040 6,216 First Data 147,212 6,892 Fiserv* 35,380 1,505 Freescale Semiconductor, Cl B* 76,600 2,127 Gateway* 48,887 107 Google, Cl A* 37,416 14,592 - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 7 SCHEDULE OF INVESTMENTS S&P 500 Index Fund (Continued) March 31, 2006 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- Hewlett-Packard 542,752 $ 17,857 Intel 1,134,994 21,962 International Business Machines 300,790 24,806 Intuit* 33,943 1,805 Jabil Circuit (D)* 32,479 1,392 JDS Uniphase (D)* 311,655 1,300 Kla-Tencor (D) 38,271 1,851 Lexmark International, Cl A (D)* 21,639 982 Linear Technology (D) 57,094 2,003 LSI Logic (D)* 73,846 854 Lucent Technologies (D)* 857,591 2,616 Maxim Integrated Products (D) 60,905 2,263 Micron Technology (D)* 118,769 1,748 Microsoft 1,712,262 46,591 Molex 27,360 908 Motorola 483,406 11,075 National Semiconductor 62,537 1,741 NCR* 34,268 1,432 Network Appliance (D)* 71,776 2,586 Novell* 72,289 555 Novellus Systems (D)* 24,727 593 Nvidia (D)* 31,866 1,825 Oracle* 695,956 9,528 Parametric Technology* 20,612 337 Paychex 64,056 2,669 PMC - Sierra* 34,446 423 QLogic* 30,348 587 Qualcomm 317,832 16,085 Sabre Holdings, Cl A (D) 24,802 584 Sanmina-SCI* 99,373 407 Solectron* 172,754 691 Sun Microsystems* 664,111 3,407 Symantec* 200,247 3,370 Symbol Technologies 45,940 486 Tektronix (D) 15,959 570 Tellabs* 84,599 1,345 Teradyne (D)* 37,207 577 Texas Instruments 307,134 9,973 Unisys (D)* 64,395 444 VeriSign* 48,100 1,154 Xerox (D)* 178,236 2,709 Xilinx 64,709 1,647 Yahoo! (D)* 242,138 7,811 ---------- 359,579 ---------- MATERIALS -- 3.0% Air Products & Chemicals 42,726 2,871 Alcoa 167,335 5,114 Allegheny Technologies (D) 15,959 976 Ashland 13,293 945 Ball (D) 19,691 863 Bemis (D) 20,190 638 Dow Chemical 185,675 7,538 - ------------------------------------------------------------- Market Value Description Shares ($ Thousands) - ------------------------------------------------------------- E.I. Du Pont de Nemours 176,535 $ 7,452 Eastman Chemical 15,408 789 Ecolab 34,830 1,331 Engelhard 22,734 900 Freeport-McMoRan Copper & Gold, Cl B (D) 35,292 2,109 Hercules (D)* 21,307 294 International Flavors & Fragrances 15,394 528 International Paper 94,570 3,269 Louisiana-Pacific (D) 19,494 530 MeadWestvaco 33,815 923 Monsanto 51,724 4,384 Newmont Mining 85,708 4,447 Nucor 29,791 3,122 Pactiv (D)* 26,487 650 Phelps Dodge 39,028 3,143 PPG Industries 30,945 1,960 Praxair 61,899 3,414 Rohm & Haas 26,922 1,316 Sealed Air (D)* 15,114 875 Sigma-Aldrich (D) 12,718 837 Temple-Inland 21,377 952 Tronox, Cl B 4,321 73 United States Steel (D) 20,926 1,270 Vulcan Materials 18,749 1,625 Weyerhaeuser (D) 46,727 3,384 ---------- 68,522 ---------- TELECOMMUNICATION SERVICES -- 3.2% Alltel 75,182 4,868 AT&T 744,481 20,131 BellSouth 344,947 11,952 CenturyTel 24,560 961 Citizens Communications (D) 62,031 823 Qwest Communications International (D)* 288,426 1,961 Sprint Nextel 569,422 14,714 Verizon Communications 561,622 19,129 ---------- 74,539 ---------- UTILITIES -- 3.1% AES* 125,890 2,148 Allegheny Energy (D)* 30,768 1,041 Ameren (D) 39,244 1,955 American Electric Power (D) 75,515 2,569 Centerpoint Energy (D) 58,568 699 Cinergy 37,639 1,709 CMS Energy (D)* 41,492 537 Consolidated Edison (D) 47,133 2,050 Constellation Energy Group 34,199 1,871 Dominion Resources (D) 66,670 4,602 DTE Energy (D) 33,645 1,349 Duke Energy (D) 178,106 5,192 - -------------------------------------------------------------------------------- 8 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands)/Shares ($ Thousands) - ------------------------------------------------------------- Dynegy, Cl A (D)* 56,989 $ 274 Edison International 62,553 2,576 Entergy 39,864 2,748 Exelon 129,154 6,832 FirstEnergy 63,287 3,095 FPL Group 77,420 3,108 KeySpan (D) 32,997 1,349 Nicor 8,325 329 NiSource 51,579 1,043 Peoples Energy 7,205 257 PG&E 66,229 2,576 Pinnacle West Capital 18,649 729 PPL 72,971 2,145 Progress Energy (D) 48,383 2,128 Public Service Enterprise Group 48,065 3,078 Sempra Energy 49,565 2,303 Southern (D) 142,335 4,664 TECO Energy (D) 39,312 634 TXU 88,824 3,976 Xcel Energy 76,119 1,382 ---------- 70,948 ---------- Total Common Stock (Cost $1,512,790) ($ Thousands) 2,255,577 ---------- CORPORATE OBLIGATIONS (E) -- 6.5% FINANCIALS -- 6.5% Allstate Life Global Funding II MTN (F) (G) 4.769%, 04/16/07 $ 1,971 1,971 American General Finance (F) (G) 4.779%, 05/13/07 6,213 6,212 American General Finance MTN, Ser F 3.945%, 04/16/07 428 437 Bear Stearns, EXL (F) 4.759%, 04/16/07 7,626 7,626 CIT Group MTN (F) 4.750%, 05/12/06 10,711 10,711 4.617%, 04/19/06 1,071 1,072 Caterpillar Financial Services MTN, Ser F (F) 4.680%, 07/10/06 2,142 2,142 Countrywide Financial MTN, Ser A (F) 4.960%, 09/13/06 7,926 7,926 4.770%, 11/03/06 4,499 4,499 Dekabank (F) (G) 4.614%, 02/16/07 7,926 7,925 Irish Life & Permanent MTN, Ser X (F) (G) 4.808%, 04/23/07 5,698 5,697 Islandsbanki (F) (G) 4.844%, 03/22/07 3,642 3,642 4.720%, 03/07/07 6,427 6,427 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands)/Shares ($ Thousands) - ------------------------------------------------------------- Jackson National Life Funding (F) (G) 4.630%, 03/01/07 $ 9,426 $ 9,426 Kaupthing Bank MTN (F) (G) 4.836%, 03/20/07 10,711 10,711 Landsbanki Islands (F) (G) 4.829%, 03/16/07 8,141 8,141 Liberty Lighthouse US Capital MTN (F) (G) 4.725%, 05/10/06 4,285 4,282 Morgan Stanley EXL (F) 4.721%, 04/04/07 1,500 1,500 Morgan Stanley EXL, Ser S (F) 4.634%, 04/03/07 2,142 2,142 Natexis Banques (F) (G) 4.743%, 04/16/07 4,177 4,176 Nationwide Building Society (F)(G) 4.991%, 09/28/06 2,356 2,357 4.700%, 03/07/07 4,285 4,285 Nordbank (F) (G) 4.811%, 04/23/07 7,284 7,282 Northern Rock (F) (G) 4.650%, 04/03/07 4,413 4,413 Pacific Life Global Funding (F)(G) 4.740%, 04/13/07 3,213 3,213 Premium Asset Trust, Ser 2004-06 (F) (G) 4.857%, 06/30/06 4,070 4,073 Premium Asset Trust, Ser 2004-10 (F) (G) 4.759%, 04/18/07 5,998 5,998 SLM EXL, Ser S (F) (G) 4.570%, 04/16/07 4,713 4,713 Sigma Finance MTN (G) 4.680%, 11/09/06 2,314 2,314 Skandinav Enskilda Bank (F) (G) 4.772%, 03/19/07 4,713 4,712 ---------- Total Corporate Obligations (Cost $150,025) ($ Thousands) 150,025 ---------- CASH EQUIVALENT -- 2.4% SEI Daily Income Trust, Prime Obligation Fund, Cl A, 4.560%** (C) 56,589,487 56,589 ---------- Total Cash Equivalent (Cost $56,589) ($ Thousands) 56,589 ---------- - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 9 SCHEDULE OF INVESTMENTS S&P 500 Index Fund (Concluded) March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- ASSET-BACKED SECURITIES (E) (F) (G) -- 1.3% MORTGAGE RELATED SECURITIES -- 1.3% Cheyne High Grade, Ser 2004-1A, Cl AM1 4.740%, 11/10/06 $ 2,142 $ 2,142 Commodore, Ser 2003-2A, Cl A1MM 4.970%, 12/12/38 1,971 1,971 Duke Funding, Ser 2004-6B, Cl A1S1 4.620%, 10/10/06 3,213 3,213 Harwood Street Funding II, Ser 2005-1A, Cl NOTE 4.868%, 05/25/06 4,285 4,285 Orchid Structured Finance CDO, Ser 2003-1A, Cl A1MM 4.920%, 05/18/06 3,286 3,286 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AM4 4.858%, 05/25/06 3,060 3,060 RMAC, Ser 2004-NS3A, Cl A1 4.720%, 05/12/05 767 767 Saturn Ventures II 4.730%, 08/07/06 3,998 3,998 TIAA Real Estate CDO, Ser 2003 1A, Cl A1MM 4.851%, 12/18/07 2,767 2,767 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMD 4.930%, 09/15/06 1,071 1,071 Whitehawk CDO Funding, Ser 2004-1A, Cl AMME 4.930%, 09/15/06 643 643 Witherspoon CDO Funding 4.786%, 06/15/06 2,999 2,999 ---------- Total Asset-Backed Securities (Cost $30,202) ($ Thousands) 30,202 ---------- MASTER NOTES (E) (F) -- 0.7% Bank of America 4.945%, 04/03/06 10,711 10,711 Bear Stearns 4.995%, 04/03/06 5,142 5,142 ---------- Total Master Notes (Cost $15,853) ($ Thousands) 15,853 ---------- COMMERCIAL PAPER (A) (E) -- 0.6% FINANCIALS -- 0.6% CPI Funding 4.901%, 04/03/06 873 873 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- Elysian Funding LLC 4.867%, 04/27/06 $ 643 $ 640 4.767%, 04/28/06 4,285 4,252 4.706%, 04/10/06 2,142 2,127 Harbour Funding 4.763%, 04/06/06 3,185 3,178 Harwood Funding 4.881%, 04/03/06 1,028 1,028 Thornburg Mortgage Capital Resources 4.781%, 04/19/06 2,142 2,134 Transamerica Securities 4.841%, 04/03/06 504 503 ---------- Total Commercial Paper (Cost $14,735) ($ Thousands) 14,735 ---------- TIME DEPOSITS (E) (F) -- 0.2% Societe Generale 4.900%, 04/03/06 4,285 4,285 ---------- Total Time Deposits (Cost $4,285) ($ Thousands) 4,285 ---------- U.S. TREASURY OBLIGATIONS -- 0.1% U.S. Treasury Bills (B) 4.593%, 06/22/06 2,900 2,871 ---------- Total U.S. Treasury Obligations (Cost $2,870) ($ Thousands) 2,871 ---------- CERTIFICATES OF DEPOSIT (E) (F) -- 0.1% U.S. Trust of New York 4.760%, 03/13/07 1,714 1,714 ---------- Total Certificates of Deposit (Cost $1,714) ($ Thousands) 1,714 ---------- REPURCHASE AGREEMENTS (E) (H) -- 2.1% Barclays Capital 4.790%, dated 03/31/06, to be repurchased on 04/03/06, repurchase price $24,772,114 (collateralized by various U.S. Government Obligations, ranging in par value $1,984,591- $5,092,584, 0.000%-5.900%, 05/18/06-08/04/25; with total market value $25,257,511) 24,762 24,762 - -------------------------------------------------------------------------------- 10 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- Lehman Brothers 4.800%, dated 03/31/06, to be repurchased on 04/03/06, repurchase price $24,945,899 (collateralized by various U.S. Government Obligations, ranging in par value $1,483,088- $2,696,893, 0.000%-10.700%, 10/17/08-11/23/35; with total market value $25,434,715) $24,936 $ 24,936 ---------- Total Repurchase Agreements (Cost $49,698) ($ Thousands) 49,698 ---------- Total Investments -- 111.6% (Cost $1,838,761) ($ Thousands) $2,581,549 ========== Percentages are based on Net Assets of $2,312,247 ($ Thousands). * Non-income producing security. ** Rate shown is the 7-day effective yield as of March 31, 2006. + Real Estate Investment Trusts. (A) The rate reported is the effective yield at time of purchase. (B) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (C) Investment in Affiliated Registered Investment Company (see Note 3). (D) This security or a partial position of this security is on loan at March 31, 2006 (see note 8). The total value of securities on loan at March 31, 2006 was $258,262 ($ Thousands). (E) This security was purchased with cash collateral held from securities lending (see Note 8). The total value of such securities as of March 31, 2006 was $266,512 ($ Thousands). (F) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of March 31, 2006. (G) This security, which was purchased with cash collateral, was sold within the terms of private placement memorandum, exempt from registration under Section 3A-4, 4(2) or 144A of the Securities Act of 1933, as amended, and may be sold only to dealers in that program or other "accredited investors." (H) Tri-Party Repurchase Agreements. CDO -- Collateralized Debt Obligation Cl -- Class EXL -- Extendable Maturity LLC -- Limited Liability Company MTN -- Medium Term Note NIM -- Net Interest Margin Ser -- Series Futures -- A summary of the open futures contracts held by the Fund at March 31, 2006, is as follows (See Note 2 in Notes to Financial Statements): - -------------------------------------------------------------------------------- Number of Contract Unrealized Constracts Value Expiration Appreciation Type of Contract Long ($ Thousands) Date ($ Thousands) - -------------------------------------------------------------------------------- S&P 500 E MINI Index 920 $59,952 June 2006 $253 ==== The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 11 STATEMENT OF NET ASSETS Bond Index Fund March 31, 2006 - -------------------------------------------------------------------------------- [BAR CHART OMITTED] PLOT POINTS FOLLOW: Sector Weightings (Unaudited)++: 34.3% U.S. Government Agency Mortgage-Backed Obligations 23.1% U.S. Treasury Obligations 11.3% U.S. Government Agency Obligations 10.0% Financials 6.2% Asset-Backed Securities 2.2% Telecommunication Services 1.9% Yankee Bonds 1.9% Short-Term Investments 1.7% Industrials 1.6% Utilities 1.5% Consumer Discretionary 1.4% Consumer Staples 1.0% Energy 0.7% Health Care 0.5% Materials 0.4% Information Technology 0.3% Municipal Bond ++Percentages based on total investments. - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- U.S. GOVERNMENT AGENCY MORTGAGE-BACKED OBLIGATIONS -- 34.4% FHLMC 10.500%, 12/01/17 to 06/01/19 $ 2 $ 2 9.500%, 08/01/17 to 02/01/21 8 9 9.000%, 07/01/09 1 1 8.500%, 01/01/10 6 7 8.000%, 01/01/11 to 08/01/30 17 17 7.500%, 11/01/09 to 02/01/31 62 65 7.000%, 11/01/07 to 04/01/32 144 147 6.500%, 07/01/08 to 08/01/32 375 383 6.000%, 11/01/13 to 04/01/33 577 580 5.500%, 03/01/17 to 03/01/35 1,359 1,334 5.000%, 11/01/17 to 11/01/35 1,738 1,672 4.500%, 04/01/18 to 10/01/33 416 395 4.000%, 09/01/18 169 158 FNMA 9.500%, 02/01/21 1 1 8.500%, 05/01/07 to 04/01/30 24 25 8.000%, 08/01/07 to 02/01/30 31 33 7.500%, 06/01/07 to 07/01/33 63 65 7.000%, 02/01/08 to 05/01/32 191 196 6.500%, 04/01/11 to 07/01/32 358 367 6.000%, 12/01/08 to 09/01/34 966 971 5.500%, 12/01/13 to 12/01/35 2,106 2,065 5.000%, 11/01/17 to 09/01/35 2,043 1,959 4.500%, 04/01/18 to 07/01/35 783 740 4.000%, 10/01/18 77 72 GNMA 11.500%, 04/15/15 14 16 10.000%, 09/15/18 to 02/20/21 2 2 9.500%, 09/15/09 to 07/15/17 4 4 9.000%, 09/15/25 28 31 8.500%, 05/15/17 to 11/15/22 30 33 8.000%, 10/15/07 to 03/15/30 27 29 7.500%, 01/15/23 to 06/15/32 52 54 7.000%, 12/15/27 to 04/15/31 90 94 6.500%, 03/15/11 to 11/15/31 170 175 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- 6.000%, 04/15/17 to 03/15/33 $ 287 $ 293 5.500%, 02/15/33 to 04/15/34 291 289 5.000%, 05/15/18 to 10/15/33 303 293 4.500%, 08/15/33 21 20 ------- Total U.S. Government Agency Mortgage-Backed Obligations (Cost $12,853) ($ Thousands) 12,597 ------- U.S. TREASURY OBLIGATIONS -- 23.2% U.S. Treasury Bonds 12.000%, 08/15/13 140 162 11.250%, 02/15/15 35 51 9.875%, 11/15/15 30 41 9.125%, 05/15/18 80 110 8.875%, 02/15/19 100 136 8.750%, 05/15/17 to 08/15/20 170 230 8.125%, 08/15/19 to 08/15/21 240 316 8.000%, 11/15/21 45 59 7.875%, 02/15/21 85 110 7.625%, 11/15/22 to 02/15/25 130 168 7.500%, 11/15/16 to 11/15/24 195 240 7.250%, 05/15/16 155 183 7.125%, 02/15/23 80 98 6.875%, 08/15/25 25 31 6.500%, 11/15/26 40 47 6.375%, 08/15/27 45 53 6.250%, 05/15/30 65 76 6.125%, 11/15/27 to 08/15/29 115 132 6.000%, 02/15/26 100 112 5.500%, 08/15/28 80 85 5.375%, 02/15/31 90 95 5.250%, 11/15/28 to 02/15/29 80 82 4.500%, 02/15/36 100 94 U.S. Treasury Notes 6.500%, 02/15/10 140 148 6.000%, 08/15/09 150 155 5.750%, 08/15/10 280 290 5.500%, 05/15/09 245 250 5.000%, 02/15/11 to 08/15/11 380 384 4.875%, 02/15/12 100 100 4.500%, 02/15/09 to 11/15/15 180 177 4.375%, 12/31/07 to 08/15/12 1,210 1,195 4.250%, 01/15/11 to 08/15/14 560 541 4.125%, 05/15/15 95 90 4.000%, 11/15/12 to 02/15/15 390 368 3.875%, 05/15/09 to 02/15/13 350 336 3.625%, 06/30/07 to 07/15/09 415 406 3.500%, 11/15/09 200 191 3.375%, 09/15/09 110 105 3.000%, 11/15/07 to 02/15/08 895 868 2.625%, 05/15/08 180 172 ------- Total U.S. Treasury Obligations (Cost $8,620) ($ Thousands) 8,487 ------- - -------------------------------------------------------------------------------- 12 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- CORPORATE OBLIGATIONS -- 21.1% CONSUMER DISCRETIONARY -- 1.5% Cox Communications 7.750%, 11/01/10 $ 75 $ 80 DaimlerChrysler 7.450%, 03/01/27 40 42 Gannett 6.375%, 04/01/12 40 41 Lowe's 6.500%, 03/15/29 25 27 May Department Stores 3.950%, 07/15/07 235 230 News America Holdings 7.700%, 10/30/25 55 60 Target 7.000%, 07/15/31 10 12 Time Warner 6.950%, 01/15/28 65 66 ------- 558 ------- CONSUMER STAPLES -- 1.4% Anheuser-Busch 4.375%, 01/15/13 25 23 Archer-Daniels-Midland 5.935%, 10/01/32 25 25 Coca Cola Enterprises 8.500%, 02/01/22 30 37 Conagra Foods 9.750%, 03/01/21 30 38 Kellogg, Ser B 7.450%, 04/01/31 15 18 Kraft Foods 5.625%, 11/01/11 40 40 Kroger 8.050%, 02/01/10 50 54 Procter & Gamble 6.450%, 01/15/26 20 22 Safeway 6.500%, 11/15/08 135 137 Unilever Capital 7.125%, 11/01/10 50 53 Wal-Mart Stores 5.250%, 09/01/35 20 18 4.550%, 05/01/13 40 38 ------- 503 ------- ENERGY -- 1.1% Canadian Natural Resources 6.450%, 06/30/33 20 20 ConocoPhilips 6.650%, 07/15/18 65 71 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- Devon Financing 7.875%, 09/30/31 $ 25 $ 30 KeySpan 7.625%, 11/15/10 50 54 Kinder Morgan Energy Partners LP 7.400%, 03/15/31 30 33 Marathon Oil 5.375%, 06/01/07 100 100 PC Financial Partnership 5.000%, 11/15/14 50 48 Southern Union 8.250%, 11/15/29 25 29 ------- 385 ------- FINANCIALS -- 10.0% Abbey National PLC 7.950%, 10/26/29 20 25 Allstate 7.200%, 12/01/09 90 95 5.000%, 08/15/14 40 39 American International Group 4.250%, 05/15/13 30 28 Ameriprise Financial 5.350%, 11/15/10 45 45 BB&T 6.500%, 08/01/11 65 68 Bank of America 7.800%, 09/15/16 35 41 Bear Stearns 7.625%, 12/07/09 70 75 Berkshire Hathaway 4.850%, 01/15/15 35 33 Boeing Capital 6.500%, 02/15/12 50 53 CIT Group 5.500%, 11/30/07 140 140 CIT Group MTN 5.125%, 09/30/14 35 33 Caterpillar Financial Services 4.750%, 02/17/15 60 56 Citigroup 6.625%, 06/15/32 20 21 6.500%, 01/18/11 55 57 4.250%, 07/29/09 100 97 Countrywide Home Loans MTN 3.250%, 05/21/08 135 129 Credit Suisse First Boston 7.125%, 07/15/32 20 23 EOP Operating LP+ 7.875%, 07/15/31 20 23 7.250%, 02/15/18 35 38 - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 13 STATEMENT OF NET ASSETS Bond Index Fund (Continued) March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- General Electric Capital MTN, Ser A 6.750%, 03/15/32 $ 40 $ 45 5.450%, 01/15/13 65 65 General Electric Capital Services 7.500%, 08/21/35 10 12 Goldman Sachs Group 6.600%, 01/15/12 35 37 5.150%, 01/15/14 115 111 HSBC Finance 6.400%, 06/17/08 165 169 5.500%, 01/19/16 45 44 HSBC Holdings PLC 7.625%, 05/17/32 40 47 Inter-American Development Bank 4.375%, 09/20/12 45 43 International Bank for Reconstruction & Development 7.625%, 01/19/23 30 38 JPMorgan Chase 6.750%, 02/01/11 50 53 5.250%, 05/30/07 125 125 JPMorgan Chase Capital XV 5.875%, 03/15/35 30 28 Korea Development Bank 5.750%, 09/10/13 50 50 Kreditanstalt fuer Wiederaufbau 4.250%, 06/15/10 40 39 Landesbank Baden - Wuerttemberg New York MTN 5.050%, 12/30/15 40 39 Landwirtschaftliche Rentenbank 3.875%, 03/15/10 110 105 Lehman Brothers 7.875%, 08/15/10 110 120 Marsh & McLennan 5.375%, 07/15/14 85 81 Merrill Lynch 6.875%, 11/15/18 20 22 Merrill Lynch MTN, Ser C 5.000%, 01/15/15 35 33 Metlife 6.125%, 12/01/11 105 108 Morgan Stanley 7.250%, 04/01/32 30 34 NB Capital Trust IV 8.250%, 04/15/27 125 133 National Rural Utilities Cooperative Finance MTN, Ser C 7.250%, 03/01/12 40 43 Pemex Project Funding Master Trust 7.875%, 02/01/09 145 152 RBS Capital Trust III (C) 5.512%, 09/30/49 60 58 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- Residential Capital 6.000%, 02/22/11 $ 30 $ 30 Royal Bank of Scotland Group PLC 4.700%, 07/03/18 50 46 SLM MTN, Ser A 5.000%, 10/01/13 35 34 SMBC International Finance 8.500%, 06/15/09 100 108 Sanwa Finance Aruba 8.350%, 07/15/09 100 108 Simon Property Group LP+ 3.750%, 01/30/09 100 95 SunTrust Bank 6.375%, 04/01/11 50 52 Swiss Bank - New York 7.000%, 10/15/15 65 71 U.S. Bank NA 4.950%, 10/30/14 45 43 Wachovia Bank NA 7.800%, 08/18/10 85 93 Washington Mutual 4.625%, 04/01/14 50 46 ------- 3,679 ------- HEALTH CARE -- 0.7% Boston Scientific 5.450%, 06/15/14 40 38 Bristol-Myers Squibb 5.750%, 10/01/11 60 61 Eli Lilly 7.125%, 06/01/25 30 34 Pharmacia 6.500%, 12/01/18 20 22 WellPoint 5.000%, 12/15/14 25 24 Wyeth 5.500%, 03/15/13 75 74 ------- 253 ------- INDUSTRIALS -- 1.7% Alcoa 6.000%, 01/15/12 50 51 Baxter International 4.625%, 03/15/15 40 37 Eastman Chemical 7.250%, 01/15/24 15 16 Honeywell International 6.125%, 11/01/11 40 41 Illinois Tool Works 5.750%, 03/01/09 50 51 Lockheed Martin 8.500%, 12/01/29 20 26 - -------------------------------------------------------------------------------- 14 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- Masco 5.875%, 07/15/12 $ 45 $ 45 Nexen 5.875%, 03/10/35 25 23 Norfolk Southern 5.590%, 05/17/25 50 48 PHH Corp 7.125%, 03/01/13 25 26 Pulte Homes 5.250%, 01/15/14 55 51 Tyco International Group 6.875%, 01/15/29 15 16 Union Pacific 6.625%, 02/01/29 20 21 United Technologies 7.125%, 11/15/10 50 53 Viacom 6.625%, 05/15/11 80 83 Waste Management 7.000%, 07/15/28 20 21 ------- 609 ------- INFORMATION TECHNOLOGY -- 0.4% First Data 4.500%, 06/15/10 45 43 International Business Machines 4.750%, 11/29/12 125 121 ------- 164 ------- MATERIALS -- 0.5% Alcan 6.125%, 12/15/33 35 34 Dow Chemical 6.125%, 02/01/11 100 103 International Paper 5.500%, 01/15/14 40 38 Weyerhaeuser 7.125%, 07/15/23 25 26 ------- 201 ------- TELECOMMUNICATION SERVICES -- 2.2% AT&T 5.100%, 09/15/14 35 33 Alltel 7.000%, 03/15/16 25 27 Bellsouth Telecommunication 7.875%, 02/15/30 35 40 Deutsche Telekom International Finance 8.750%, 06/15/30 20 24 France Telecom 8.500%, 03/01/31 25 31 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- Koninklijke 8.375%, 10/01/30 $ 35 $ 38 Motorola 8.000%, 11/01/11 75 84 SBC Communications 6.250%, 03/15/11 110 113 Sprint Capital 7.625%, 01/30/11 115 124 6.900%, 05/01/19 25 27 TCI Communications 8.750%, 08/01/15 75 88 Verizon Global Funding 7.750%, 12/01/30 65 72 Vodafone Group PLC 7.875%, 02/15/30 20 23 7.750%, 02/15/10 70 75 ------- 799 ------- UTILITIES -- 1.6% Alabama Power, Ser Q 5.500%, 10/15/17 35 34 Cincinnati Gas & Electric 5.700%, 09/15/12 55 55 Commonwealth Edison 4.740%, 08/15/10 60 58 Dominion Resources 6.300%, 03/15/33 35 34 Duke Energy 4.200%, 10/01/08 45 44 Duke Energy Field Services LLC 7.875%, 08/16/10 25 27 Exelon Generation LLC 6.950%, 06/15/11 40 42 FPL Group Capital 7.375%, 06/01/09 100 105 Jersey Central Power & Light 5.625%, 05/01/16 55 55 Midamerican Energy Holdings 8.480%, 09/15/28 40 49 Oncor Electric Delivery 7.000%, 05/01/32 20 22 Pacific Gas & Electric 4.800%, 03/01/14 50 47 ------- 572 ------- Total Corporate Obligations (Cost $7,797) ($ Thousands) 7,723 ------- - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 15 STATEMENT OF NET ASSETS Bond Index Fund (Concluded) March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- U.S. GOVERNMENT AGENCY OBLIGATIONS -- 11.3% FFCB 3.375%, 07/15/08 $ 170 $ 164 FHLB 4.625%, 02/08/08 320 317 4.500%, 09/16/13 100 96 4.375%, 09/17/10 175 170 3.875%, 08/22/08 75 73 3.625%, 11/14/08 100 96 3.375%, 09/14/07 165 161 3.000%, 04/15/09 160 151 FHLMC 6.875%, 09/15/10 125 133 6.750%, 03/15/31 25 30 6.625%, 09/15/09 60 63 6.375%, 08/01/11 85 85 6.250%, 07/15/32 65 73 5.750%, 03/15/09 to 01/15/12 345 353 5.625%, 03/15/11 100 102 5.500%, 01/01/36 196 192 5.125%, 07/15/12 75 75 4.500%, 01/15/14 110 105 3.500%, 09/15/07 215 210 2.875%, 05/15/07 100 98 FNMA 7.250%, 01/15/10 140 150 7.125%, 01/15/30 70 87 6.625%, 11/15/10 120 127 6.250%, 02/01/11 50 52 6.000%, 05/15/11 50 52 5.250%, 04/15/07 to 01/15/09 320 320 5.125%, 01/02/14 25 24 4.250%, 07/15/07 150 148 3.875%, 02/15/10 65 62 FNMA (A) 5.110%, 07/05/14 415 271 TVA, Ser B 6.000%, 03/15/13 100 105 ------- Total U.S. Government Agency Obligations (Cost $4,137) ($ Thousands) 4,145 ------- ASSET-BACKED SECURITIES -- 6.3% CREDIT CARDS -- 0.6% Citibank Credit Card Issuance Trust, Ser 2003-A7, Cl A7 4.150%, 07/07/17 100 91 Citibank Credit Card Master Trust, Ser 1998-2, Cl A 6.050%, 01/15/10 100 102 ------- 193 ------- - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - ------------------------------------------------------------- FINANCIAL -- 0.5% Morgan Stanley Dean Witter Capital, Ser 2003-HQ2, Cl A2 4.920%, 03/12/35 $ 200 $ 193 ------- MORTGAGE RELATED SECURITIES -- 5.2% Ameriquest Mortgage Securities, Ser 2003-6 Cl AF4 (D) 4.329%, 08/25/33 150 146 Banc of America Commercial Mortgage, Ser 2005-3, Cl A4 4.668%, 07/10/43 75 70 Bear Stearns Commercial Mortgage Securities, Ser PWR4, Cl A3 (C) 5.468%, 06/11/41 100 99 CSFB Mortgage Securities, Ser 1999-C1, Cl A2 7.290%, 09/15/41 250 262 Citigroup/Deutsche Bank Commercial Mortgage Trust, Ser 2005-CD1, Cl A4 (C) 5.225%, 07/15/44 85 83 DLJ Commercial Mortgage, Ser 1998-CF2, Cl A1B 6.240%, 11/12/31 200 204 GE Capital Commercial Mortgage, Ser 2000-1, Cl A2 6.496%, 01/15/33 175 182 GMAC Commercial Mortgage Securities, Ser 1998-C1, Cl A2 6.700%, 05/15/30 94 95 GS Mortgage Securities, Ser 2005-GG4, Cl A3 4.607%, 07/10/39 100 96 JPMorgan Chase Commercial Mortgage, Ser 2000-C10, Cl A2 7.371%, 08/15/32 200 212 PECO Energy Transition Trust, Ser 1999-A, Cl A7 6.130%, 03/01/09 150 152 UBS Commercial Mortage Trust, Ser 2002-C1, Cl A3 6.226%, 03/15/26 150 154 Wachovia Bank Commercial Mortgage Trust, Ser 2005-C17, Cl APB 5.037%, 03/15/42 50 49 Wachovia Bank Commercial Mortgage Trust, Ser 2005-C20, Cl A7 (C) 5.118%, 07/15/42 110 106 ------- 1,910 ------- Total Asset-Backed Securities (Cost $2,346) ($ Thousands) 2,296 ------- - -------------------------------------------------------------------------------- 16 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------- Face Amount Market Value Description ($ Thousands)/Shares ($ Thousands) - ------------------------------------------------------------- YANKEE BONDS -- 1.9% AXA 8.600%, 12/15/30 $ 15 $ 19 Canadian National Railways 4.400%, 03/15/13 25 23 Government of Canada 5.250%, 11/05/08 70 71 Hellenic Republic of Greece 6.950%, 03/04/08 90 93 Hydro-Quebec 8.050%, 07/07/24 20 25 International Bank for Reconstruction & Development 8.250%, 09/01/16 85 104 Province of Nova Scotia 5.750%, 02/27/12 25 26 Province of Quebec 7.500%, 09/15/29 30 37 Republic of Italy 4.375%, 06/15/13 100 95 Telecom Italia Capital 6.375%, 11/15/33 15 14 United Mexican States 8.125%, 12/30/19 75 88 7.500%, 01/14/12 95 103 ------- Total Yankee Bonds (Cost $705) ($ Thousands) 698 ------- CASH EQUIVALENT -- 1.9% SEI Daily Income Trust, Prime Obligation Fund, Cl A, 4.560%* (B) 698,305 698 ------- Total Cash Equivalent (Cost $698) ($ Thousands) 698 ------- MUNICIPAL BOND -- 0.3% Illinois State, GO 5.100%, 06/01/33 120 112 ------- Total Municipal Bond (Cost $110) ($ Thousands) 112 ------- Total Investments -- 100.4% (Cost $37,266) ($ Thousands) $36,756 ------- - ------------------------------------------------------------- Value Description ($ Thousands) - ------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (0.4)% Payable for Investment Securities Purchased $ (283) Payable for Fund Shares Redeemed (137) Income Distribution Payable (61) Administration Fees Payable (9) Investment Advisory Fees Payable (2) Other Assets and Liabilities, Net 362 ------- Total Other Assets & Liabilities (130) ------- Net Assets -- 100.0% $36,626 ======= NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) 37,230 Accumulated net realized loss on investments (94) Net unrealized depreciation on investments (510) ------- Total Net Assets $36,626 ======= Net Asset Value, Offering and Redemption Price Per Share -- Class A ($36,625,533 / 3,575,203 shares) $10.24 ====== * Rate shown is the 7-day effective yield as of March 31, 2006. + Real Estate Investment Trust (A) Zero coupon security. The rate reported on the Statement of Net Assets is the effective yield at time of purchase. (B) Investment in Affiliated Registered Investment Company (see Note 3). (C) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of March 31, 2006. (D) Step Bonds -- The rate reflected on the Statement of Net Assets is the effective yield on March 31, 2006. The coupon on a step bond changes on a specified date. Cl -- Class FFCB -- Federal Farm Credit Bank FHLB -- Federal Home Loan Bank FHLMC -- Federal Home Loan Mortgage Corporation FNMA -- Federal National Mortgage Association GNMA -- Government National Mortgage Association GO -- General Obligation LLC -- Limited Liability Company LP -- Limited Partnership MTN -- Medium Term Note NA -- National Association PLC -- Public Limited Company Ser -- Series TVA -- Tennessee Valley Authority The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 17 Statement of Assets and Liabilities ($ Thousands) March 31, 2006 - ------------------------------------------------------------------------------------------------------------------------ S&P 500 INDEX FUND - ------------------------------------------------------------------------------------------------------------------------ ASSETS: Investments, at Market Value (Cost $1,782,172) $2,524,960 Investments in Affiliated Investment Companies, at Market Value (Cost $56,589) 56,589 Receivable for Fund Shares Sold 88,697 Receivable for Investment Securities Sold 2,462 Dividends and Interest Receivable 2,665 - ------------------------------------------------------------------------------------------------------------------------ Total Assets 2,675,373 - ------------------------------------------------------------------------------------------------------------------------ LIABILITIES: Payable Upon Return of Securities Loaned 266,512 Payable for Investment Securities Purchased 90,429 Payable for Fund Shares Redeemed 5,349 Administration Fees Payable 365 Variation Margin Payable 193 Investment Advisory Fees Payable 56 Shareholder Servicing Fees Payable 89 Accrued Expenses 133 - ------------------------------------------------------------------------------------------------------------------------ Total Liabilities 363,126 - ------------------------------------------------------------------------------------------------------------------------ Net Assets $2,312,247 - ------------------------------------------------------------------------------------------------------------------------ NET ASSETS: Paid-in-Capital $1,550,557 Undistributed Net Investment Income 487 Accumulated Net Realized Gain on Investments and Futures Contracts 18,162 Net Unrealized Appreciation on Investments 742,788 Net Unrealized Appreciation on Futures Contracts 253 - ------------------------------------------------------------------------------------------------------------------------ Net Assets $2,312,247 - ------------------------------------------------------------------------------------------------------------------------ Net Asset Value, Offering and Redemption Price Per Share -- Class A ($614,245,850 / 16,006,374 shares) $38.38 - ------------------------------------------------------------------------------------------------------------------------ Net Asset Value, Offering and Redemption Price Per Share -- Class E ($1,684,856,885 / 43,784,851 shares) $38.48 - ------------------------------------------------------------------------------------------------------------------------ Net Asset Value, Offering and Redemption Price Per Share -- Class I ($13,143,856 / 341,998 shares) $38.43 - ------------------------------------------------------------------------------------------------------------------------ The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 18 SEI Index Funds / Annual Report / March 31, 2006 Statements of Operations ($ Thousands) For the year ended March 31, 2006 - ------------------------------------------------------------------------------------------------------------------------- S&P 500 BOND INDEX INDEX FUND FUND - ------------------------------------------------------------------------------------------------------------------------- INVESTMENT INCOME: Dividends $ 36,992 $ -- Dividends from Affiliated Investment Companies(1) 876 28 Interest 63 2,289 Income from Securities Lending 296 -- - ------------------------------------------------------------------------------------------------------------------------- Total Investment Income 38,227 2,317 - ------------------------------------------------------------------------------------------------------------------------- EXPENSES: Administration Fees 4,423 168 Investment Advisory Fees 603 34 Shareholder Servicing Fees -- Class A Shares 952 120 Shareholder Servicing Fees -- Class E Shares 3,408 -- Shareholder Servicing Fees -- Class I Shares 32 -- Administrative Servicing Fees -- Class I Shares 32 -- Custodian/Wire Agent Fees 150 3 Professional Fees 113 2 Printing Fees 74 1 Licensing Fees 56 -- Registration Fees 51 2 Trustee Fees 24 1 Proxy Expenses 20 1 Other Expenses 133 3 - ------------------------------------------------------------------------------------------------------------------------- Total Expenses 10,071 335 - ------------------------------------------------------------------------------------------------------------------------- Less, Waiver of: Administration Fees (602) (32) Shareholder Servicing Fees -- Class A Shares -- (120) Shareholder Servicing Fees -- Class E Shares (3,408) -- Shareholder Servicing Fees -- Class I Shares (13) -- - ------------------------------------------------------------------------------------------------------------------------- Net Expenses 6,048 183 - ------------------------------------------------------------------------------------------------------------------------- NET INVESTMENT INCOME 32,179 2,134 - ------------------------------------------------------------------------------------------------------------------------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net Realized Gain (Loss) on Investments 64,637 (58) Net Realized Gain on Futures Contracts 2,363 -- Net Change in Unrealized Appreciation (Depreciation) on Investments 118,328 (968) Net Change in Unrealized Appreciation on Futures Contracts 348 -- - ------------------------------------------------------------------------------------------------------------------------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS $217,855 $1,108 - ------------------------------------------------------------------------------------------------------------------------- (1) See Note 3 in the Notes to Financial Statements. Amounts designated as "--" are either $0 or have been rounded to $0. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 19 Statements of Changes in Net Assets ($ Thousands) For the years ended March 31, - ------------------------------------------------------------------------------------------------------------------------------ S&P 500 INDEX FUND BOND INDEX FUND - ------------------------------------------------------------------------------------------------------------------------------ 2006 2005 2006 2005 - ------------------------------------------------------------------------------------------------------------------------------ OPERATIONS: Net Investment Income $ 32,179 $ 30,679 $ 2,134 $ 2,690 Net Realized Gain (Loss) from Investment Transactions and Futures Contracts 67,000 50,061 (58) 840 Net Change in Unrealized Appreciation (Depreciation) on Investments and Futures Contracts 118,676 34,524 (968) (3,296) - ------------------------------------------------------------------------------------------------------------------------------ Net Increase in Net Assets Resulting from Operations 217,855 115,264 1,108 234 - ------------------------------------------------------------------------------------------------------------------------------ DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS: Net Investment Income: CLASS A: (9,054) (10,876) (2,165) (2,782) CLASS E: (23,083) (19,191) -- -- CLASS I: (150) (131) -- -- Net Realized Gains: CLASS A: (21,431) (582) (289) (692) CLASS E: (48,130) (983) -- -- CLASS I: (430) (8) -- -- - ------------------------------------------------------------------------------------------------------------------------------ Total Dividends and Distributions (102,278) (31,771) (2,454) (3,474) - ------------------------------------------------------------------------------------------------------------------------------ CAPITAL SHARE TRANSACTIONS:(1) CLASS A: Proceeds from Shares Issued 100,477 144,323 20,737 33,693 Reinvestment of Dividends & Distributions 29,133 10,798 1,312 1,904 Cost of Shares Redeemed (207,986) (215,278) (37,683) (54,279) - ------------------------------------------------------------------------------------------------------------------------------ Decrease in Net Assets Derived from Class A Transactions (78,376) (60,157) (15,634) (18,682) - ------------------------------------------------------------------------------------------------------------------------------ CLASS E: Proceeds from Shares Issued 599,259(2) 569,754 -- -- Reinvestment of Dividends & Distributions 63,362 16,617 -- -- Cost of Shares Redeemed (362,975) (237,002) -- -- - ------------------------------------------------------------------------------------------------------------------------------ Increase in Net Assets Derived from Class E Transactions 299,646 349,369 -- -- - ------------------------------------------------------------------------------------------------------------------------------ CLASS I: Proceeds from Shares Issued 4,627 7,237 -- -- Reinvestment of Dividends & Distributions 580 139 -- -- Cost of Shares Redeemed (4,268) (2,653) -- -- - ------------------------------------------------------------------------------------------------------------------------------ Increase in Net Assets Derived from Class I Transactions 939 4,723 -- -- - ------------------------------------------------------------------------------------------------------------------------------ Increase (Decrease) in Net Assets Derived from Capital Share Transactions 222,209 293,935 (15,634) (18,682) - ------------------------------------------------------------------------------------------------------------------------------ Net Increase (Decrease) in Net Assets 337,786 377,428 (16,980) (21,922) - ------------------------------------------------------------------------------------------------------------------------------ NET ASSETS: BEGINNING OF YEAR 1,974,461 1,597,033 53,606 75,528 - ------------------------------------------------------------------------------------------------------------------------------ END OF YEAR $2,312,247 $1,974,461 $ 36,626 $ 53,606 - ------------------------------------------------------------------------------------------------------------------------------ Undistributed Net Investment Income $ 487 $ 578 $ -- $ -- - ------------------------------------------------------------------------------------------------------------------------------ (1) For Capital Share Transactions see Note 4 in the Notes to Financial Statements. (2) Includes subscriptions as a result of an in-kind transfer of securities (see Note 9). Amounts designated as "--" are either $0 or have been rounded to $0. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 20 SEI Index Funds / Annual Report / March 31, 2006 Financial Highlights For the years ended March 31, (unless otherwise indicated) For a Share Outstanding Throughout Each Period - ----------------------------------------------------------------------------------------------------------------------- Net Realized and Distributions Net Asset Unrealized Dividends from Total Value, Net Gains Total from Net Realized Dividends Net Asset Beginning Investment (Losses) from Investment Capital and Value, End of Period Income on Securities Operations Income Gains Distributions of Period - ----------------------------------------------------------------------------------------------------------------------- S&P 500 INDEX FUND CLASS A 2006 $36.21 $0.56* $ 3.47* $ 4.03 $(0.54) $(1.32) $(1.86) $38.38 2005 34.66 0.59* 1.57* 2.16 (0.58) (0.03) (0.61) 36.21 2004 26.18 0.42* 8.58* 9.00 (0.52) -- (0.52) 34.66 2003 35.39 0.38 (9.21) (8.83) (0.38) -- (0.38) 26.18 2002 35.88 0.36 (0.46) (0.10) (0.39) -- (0.39) 35.39 CLASS E 2006 $36.31 $0.62* $ 3.48* $ 4.10 $(0.61) $(1.32) $(1.93) $38.48 2005 34.76 0.66* 1.55* 2.21 (0.63) (0.03) (0.66) 36.31 2004 26.26 0.47* 8.61* 9.08 (0.58) -- (0.58) 34.76 2003 35.49 0.44 (9.25) (8.81) (0.42) -- (0.42) 26.26 2002 35.97 0.43 (0.46) (0.03) (0.45) -- (0.45) 35.49 CLASS I 2006 $36.26 $0.47* $ 3.46* $ 3.93 $(0.44) $(1.32) $(1.76) $38.43 2005 34.72 0.51* 1.56* 2.07 (0.50) (0.03) (0.53) 36.26 2004 26.22 0.34* 8.60* 8.94 (0.44) -- (0.44) 34.72 2003 (2) 30.63 0.33 (4.46) (4.13) (0.28) -- (0.28) 26.22 BOND INDEX FUND CLASS A 2006 $10.59 $0.47* $(0.28)* $ 0.19 $(0.48) $(0.06) $(0.54) $10.24 2005 11.12 0.46* (0.39)* 0.07 (0.47) (0.13) (0.60) 10.59 2004 11.11 0.46* 0.07* 0.53 (0.49) (0.03) (0.52) 11.12 2003 10.51 0.55 0.60 1.15 (0.55) -- (0.55) 11.11 2002 10.63 0.62 (0.12) 0.50 (0.62) -- (0.62) 10.51 Ratio of Ratio of Net Expenses Ratio of Net Investment to Average Net Assets Expenses Income Net Assets Portfolio Total+ End of Period to Average to Average (Excluding Turnover Return(1) ($Thousands) Net Assets Net Assets Waivers) Rate(1) - ----------------------------------------------------------------------------------------- S&P 500 INDEX FUND CLASS A 2006 11.32% $ 614,246 0.40% 1.49% 0.43% 18% 2005 6.25 655,378 0.40 1.67 0.43 11 2004 34.62 686,129 0.40 1.33 0.43 7 2003 (25.06) 524,554 0.40 1.33 0.43 7 2002 (0.26) 815,354 0.40 0.99 0.43 9 CLASS E 2006 11.49% $1,684,857 0.25% 1.65% 0.53% 18% 2005 6.39 1,307,631 0.25 1.86 0.53 11 2004 34.83 904,534 0.25 1.47 0.53 7 2003 (24.92) 790,231 0.25 1.48 0.53 7 2002 (0.07) 1,194,588 0.25 1.14 0.53 9 CLASS I 2006 11.02% $ 13,144 0.65% 1.25% 0.78% 18% 2005 5.97 11,452 0.65 1.44 0.78 11 2004 34.28 6,370 0.65 1.06 0.78 7 2003 (2) (13.53) 1,707 0.65 1.17 0.78 7 BOND INDEX FUND CLASS A 2006 1.79% $ 36,626 0.38% 4.45% 0.70% 56% 2005 0.72 53,606 0.38 4.24 0.69 55 2004 4.88 75,528 0.38 4.15 0.70 54 2003 11.17 82,304 0.38 4.92 0.70 54 2002 4.77 55,345 0.38 5.81 0.70 77 * Per share amounts calculated using average shares method. (1) Returns and portfolio turnover rates are for the period indicated and have not been annualized. Returns shown do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares. (2) Commenced operations June 28, 2002. All ratios for the period have been annualized. Amounts designated as "--" are either $0 or have been rounded to $0. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 21 Notes to Financial Statements March 31, 2006 1. ORGANIZATION SEI Index Funds (the "Trust") was organized as a Massachusetts Business Trust under a Declaration of Trust dated March 6, 1985. The Trust is registered under the Investment Company Act of 1940, as amended ("the 1940 Act"), as a diversified, open-end management investment company with two funds: the S&P 500 Index Fund and the Bond Index Fund (each a "Fund" and together the "Funds"). The Trust's prospectus provides a description of each Fund's investment objectives, policies and strategies. The Trust is registered to offer Class A, Class E and Class I shares of the S&P 500 Index Fund and Class A shares of the Bond Index Fund. The assets of each Fund are segregated, and a shareholder's interest is limited to the Fund in which shares are held. 2. SIGNIFICANT ACCOUNTING POLICIES The following is a summary of the significant accounting policies followed by the Funds. USE OF ESTIMATES -- The preparation of financial statements in conformity with generally accepted accounting principles in the United States of America 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 increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. SECURITY VALUATION -- Securities listed on a securities exchange, market or automated quotation system for which quotations are readily available (except for securities traded on NASDAQ) are valued at the last quoted sale price on the primary exchange or market on which they are traded, or, if there is no such reported sale, at the most recent quoted bid price. For securities traded on NASDAQ, the NASDAQ Official Closing Price will be used. If available, debt securities are priced based upon valuations provided by independent, third-party pricing agents. Such values generally reflect the last reported sales price if the security is actively traded. The third-party pricing agents may also value debt securities at an evaluated bid price by employing methodologies that utilize actual market transactions, broker-supplied valuations, or other methodologies designed to identify the market value for such securities. Debt obligations with remaining maturities of sixty days or less may be valued at their amortized cost, which approximates market value. Prices for most securities held in the Funds are provided daily by recognized independent pricing agents. If a security price cannot be obtained from an independent, third-party pricing agent, the Funds seek to obtain a bid price from at least one independent broker. Securities for which market prices are not "readily available" are valued in accordance with Fair Value Procedures established by the Funds' Board of Trustees. The Funds' Fair Value Procedures are implemented through a Fair Value Committee (the "Committee") designated by the Funds' Board of Trustees. Some of the more common reasons that may necessitate that a security be valued using Fair Value Procedures include: the security's trading has been halted or suspended; the security has been de-listed from a national exchange; the security's primary trading market is temporarily closed at a time when, under normal conditions, it would be open; or the security's primary pricing source is not able or willing to provide a price. When a security is valued in accordance with the Fair Value Procedures, the Committee will determine the value after taking into consideration relevant information reasonably available to the Committee. SECURITY TRANSACTIONS AND INVESTMENT INCOME -- Security transactions are accounted for on the date the security is purchased or sold (trade date). Dividend income is recognized on the ex-dividend date, and interest income is recognized on the accrual basis. Costs used in determining realized gains and losses on the sales of investment securities are those of the specific securities sold, adjusted for the accretion and amortization of purchase discounts and premiums during the respective holding periods. Purchase discounts and premiums on securities held by the Funds are accreted and amortized to maturity using a method which approximates the effective interest method. Paydown gains and losses are classified as interest income. REPURCHASE AGREEMENTS -- Securities pledged as collateral for repurchase agreements are held by each Fund's custodian bank until maturity of the repurchase agreements. Provisions of the agreements and the Trust's policies ensure that the market value of the collateral, including accrued interest thereon, is sufficient in the event of default by the counterparty. The Funds also invest in tri-party repurchase agreements. Securities held as collateral for tri-party repurchase agreements are maintained by the broker's custodian bank in a segregated account until maturity of the repurchase agreement. Tri-party repurchase agreements purchased as collateral for securities on loan are maintained by the applicable securities lending agent (See Note 8). Provisions of the agreements ensure that the market value of the collateral, including accrued interest thereon, is sufficient in the event of default. If the counterparty defaults and the value of the collateral declines, or if the counterparty enters into an insolvency proceeding, realization of the collateral by the Fund may be delayed or limited. - -------------------------------------------------------------------------------- 22 SEI Index Funds / Annual Report / March 31, 2006 TBA PURCHASE COMMITMENTS -- The Funds may engage in "to be announced" ("TBA") purchase commitments to purchase securities for a fixed price at a future date. TBA purchase commitments may be considered securities and involve a risk of loss if the value of the security to be purchased declines prior to settlement date, which risk is in addition to the risk of decline in the value of a Fund's other assets. Unsettled TBA purchase commitments are valued at the current market value of the underlying securities, according to the procedures described under "Security Valuation" above. CLASSES -- Class-specific expenses are borne by that class of shares. Income, expenses, and realized and unrealized gains/losses are allocated to the respec tive classes on the basis of relative daily net assets. EXPENSES -- Expenses that are directly related to one of the Funds are charged directly to that Fund. Other operating expenses of the Trust are prorated to the Funds on the basis of relative daily net assets. FUTURES CONTRACTS -- The S&P 500 Index Fund invests in S&P 500 Index futures contracts. The Fund's investment in S&P 500 Index futures contracts is intended to assist the Fund in more closely approximating the performance of the S&P 500 Index. Initial margin deposits of cash or securities are made upon entering into futures contracts. The contracts are marked to market daily and the resulting changes in value are accounted for as unrealized gains and losses. The variation margin requirements are paid or received, depending upon whether unrealized losses or gains are incurred. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the proceeds from (or cost of) the closing transaction and the amount invested in the contract. Risks related to futures contracts include the possibility that there may not be a liquid market for the contracts, that the changes in the values of the contract may not directly correlate with changes in the values of the underlying securities, and that the counterparty to a contract may default on its obligation to perform. Futures contracts involve risk of loss in excess of the amounts recognized in the schedule of investments to the extent of the total notional value. In addition, the Fund pledged securities as collateral for the open futures contracts and such securities have been segregated on the Fund's books. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- Dividends and distributions to shareholders which are determined in accordance with Federal tax regulations are recorded on the ex-dividend date. Dividends from net investment income for the Funds are paid to shareholders in the form of monthly dividends for the Bond Index Fund and quarterly dividends for the S&P 500 Index Fund. Any net realized capital gains on sales of securities are distributed to shareholders at least annually. 3. AGREEMENTS AND OTHER TRANSACTIONS WITH AFFILIATES ADMINISTRATION AND TRANSFER AGENCY AGREEMENT -- The Trust and SEI Investments Global Funds Services (formerly SEI Investments Fund Management) (the "Administrator") are parties to an amended and restated Administration and Transfer Agency Agreement under which the Administrator provides administrative and transfer agency services to the Funds for annual fees, based on the average daily net assets of the respective funds, as presented below: S&P 500 Index Fund .22% Bond Index Fund .35% However, the Administrator has also voluntarily agreed to waive its fee so that the total annual expenses of each Fund will not exceed certain expense limitations adopted by the Administrator as presented below. In the event that the total annual expenses of a Fund, after reflecting a waiver of all fees by the Administrator, exceed the specific limitation, the Administrator has agreed to bear such excess. Any such waiver is voluntary and may be terminated at any time at the Administrator's sole discretion. - ------------------------------------------------------------------------------- S&P 500 Index Fund Bond Index Fund - ------------------------------------------------------------------------------- Class A .40% .38% Class E .25% -- Class I .65% -- During the year, expenses related to a proxy conducted by the Trust were charged to the Funds above the cap. Certain officers and Trustees of the Trust are also officers of the Administrator or the adviser. The Trust pays each unaffiliated Trustee an annual fee for attendance at quarterly, interim, and committee meetings. The Administrator or the adviser pays compensation of officers. DISTRIBUTION AGREEMENT -- SEI Investments Distribution Co. (the "Distributor"), a wholly owned subsidiary of SEI Investments Company ("SEI") and a registered broker-dealer, acts as the Distributor of the shares of the Trust under an amended and restated distribution agreement dated September 16, 2002. The Trust has adopted plans under which firms, including the Distributor, that provide shareholder and administrative services may receive compensation therefrom. Such plans provide fees payable to the Distributor equal to the following amounts, calculated as a percentage of the average daily net - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 23 Notes to Financial Statements (Continued) March 31, 2006 assets attributable to each particular class of each respective fund. - -------------------------------------------------------------------------------- Shareholder Administrative servicing fees service fees - -------------------------------------------------------------------------------- S&P 500 Index Fund Class A .15% -- E .25% -- I .25% .25% Bond Index Fund Class A .25% -- The Distributor has voluntarily waived all or a portion of the shareholder servicing fees for Class A of the Bond Index and Class E and I of the S&P 500 Index Fund since inception of the plan. Such waivers are voluntarily and may be discontinued at any time. For the year ended March 31, 2006, the Distributor retained 100% of both shareholder servicing fees less the waiver and administrative servicing fees. Wachovia Bank, N.A. serves as the custodian of the Funds. The custodian plays no role in determining the investment policies of the Funds or which securities are to be purchased or sold in the Funds. INVESTMENT ADVISORY AND SUB-ADVISORY AGREEMENTS -- Under an Investment Advisory Agreement dated November 18, 1998 and amended November 1, 2004, SEI Investments Management Corporation ("SIMC") serves as the Investment Adviser and "manager of managers" of the Funds. For its services as Investment Adviser, SIMC receives a monthly fee at an annual rate of 0.03% and 0.07% of the average daily net assets of the S&P 500 Index and Bond Index Funds, respectively. As of October 11, 2005, SSgA Funds Management, Inc. ("SSgA") serves as the sub-adviser for the S&P 500 Index Fund under a sub-advisory agreement with the Trust and SIMC. Prior to October 11, 2005, Barclays Global Fund Advisors ("BGI") served as the sub-adviser for the S&P 500 Index Fund. Standish Mellon Asset Management Company LLC serves as the sub-adviser of the Bond Index Fund under a sub-advisory agreement dated November 1, 2004. INVESTMENT IN AFFILIATED REGISTERED INVESTMENT COMPANY -- Pursuant to an exemptive order issued by the Securities and Exchange Commission, the Funds may invest in the SEI moneymarket funds, provided that investments in the SEI money market funds do not exceed 25% of the investing Fund's total assets. 4. CAPITAL SHARE TRANSACTIONS Capital Share Transactions for the Funds were as follows (Thousands): For the year ended March 31, - ------------------------------------------------------------------------------------------------------------------- S&P 500 INDEX FUND BOND INDEX FUND - ------------------------------------------------------------------------------------------------------------------- 2006 2005 2006 2005 - ------------------------------------------------------------------------------------------------------------------- CLASS A: Shares Issued 2,705 4,111 1,964 3,126 Shares Issued in Lieu of Cash Distributions 780 300 125 176 Shares Redeemed (5,579) (6,105) (3,577) (5,032) - ------------------------------------------------------------------------------------------------------------------- Total Class A Transactions (2,094) (1,694) (1,488) (1,730) - ------------------------------------------------------------------------------------------------------------------- CLASS E: Shares Issued 15,809(1) 16,195 -- -- Shares Issued in Lieu of Cash Distributions 1,689 459 -- -- Shares Redeemed (9,723) (6,666) -- -- - ------------------------------------------------------------------------------------------------------------------- Total Class E Transactions 7,775 9,988 -- -- - ------------------------------------------------------------------------------------------------------------------- CLASS I: Shares Issued 124 204 -- -- Shares Issued in Lieu of Cash Distributions 15 4 -- -- Shares Redeemed (113) (76) -- -- - ------------------------------------------------------------------------------------------------------------------- Total Class I Transactions 26 132 -- -- - ------------------------------------------------------------------------------------------------------------------- Net Increase (Decrease) in Capital Shares 5,707 8,426 (1,488) (1,730) - ------------------------------------------------------------------------------------------------------------------- (1) Includes subscriptions as a result of in-kind transfers of securities (see Note 9). Amounts designated as "--" are either $0 or have been rounded to $0. - -------------------------------------------------------------------------------- 24 SEI Index Funds / Annual Report / March 31, 2006 5. INVESTMENT TRANSACTIONS The cost of security purchases and the proceeds from the sale of securities, other than temporary investments and short-term securities, during the year ended March 31, 2006, were as follows ($ Thousands): - -------------------------------------------------------------------------------- U.S. Government Securities Other Total - -------------------------------------------------------------------------------- S&P 500 INDEX FUND Purchases $ -- $481,174 $481,174 Sales -- 364,571 364,571 BOND INDEX FUND Purchases 20,529 5,436 25,965 Sales 31,574 10,112 41,686 The Bond Index Fund invests primarily in securities issued or guaranteed as to principal and interest by the U.S. Government or its agencies or instrumentalities. The ability of the issuers of repurchase agreements and other bonds held by the Fund to meet their obligations may be affected by economic developments in a specific industry, state or region. The market value of the Fund's investments will change in response to interest rate changes and other factors. During periods of falling interest rates, the values of fixed income securities generally rise. Conversely, during periods of rising interest rates, the values of such securities generally decline. Changes recognized by rating agencies in the ability of an issuer to make payments of interest and principal may also affect the value of these investments. A summary of credit quality ratings for securities held by the Fund at March 31, 2006 is as follows (Unaudited): - -------------------------------------------------------------------------------- % of Fund Moody's Value - -------------------------------------------------------------------------------- U.S. Government Securities 68.62% Cash Equivalents 1.90 Other Bonds Aaa 7.71 Aa 4.36 A 8.74 Baa 8.67 -------- Total 100.00% ======== 6. FEDERAL TAX INFORMATION: It is each Fund's intention to continue to qualify as a regulated investment company for Federal income tax purposes and distribute all of its taxable income (including net capital gains). Accordingly, no provision for Federal income tax is required. Dividends from net investment income and distributions from net realized capital gains are determined in accordance with U.S. Federal income tax regulations, which may differ from those amounts determined under accounting principles generally accepted in the United States of America. These book/tax differences are either temporary or permanent in nature. To the extent these differences are permanent, they are charged or credited to paid-in capital, undistributed net investment income or accumulated net realized gain, as appropriate, in the period that the differences arise. Accordingly, the following permanent differences, which are attributable to different treatment for gains and losses on paydowns of mortgage- and asset-backed securities, reclassification of long-term capital gain distributions on Real Estate Investment Trust securities, the reclassification of long-term capital gain distributions to ordinary income, and utilization of earnings and profits on shareholder redemptions have been reclassified to/from the following accounts as of March 31, 2006 ($ Thousands): - -------------------------------------------------------------------------------- Undistributed Accumulated Net Investment Realized Paid-in- Income/(Loss) Gain/(Loss) Capital - -------------------------------------------------------------------------------- S&P 500 Index Fund $17 $(4,467) $4,450 Bond Index Fund $31 $(31) $-- The tax character of dividends and distributions declared during the years ended March 31, 2006 and March 31, 2005 were as follows ($ Thousands): - -------------------------------------------------------------------------------- S&P 500 Index Fund Bond Index Fund 2006 2005 2006 2005 - -------------------------------------------------------------------------------- Ordinary Income $ 33,739 $30,198 $2,165 $2,807 Long-term capital gain 68,539 1,573 289 667 -------- ------- ------ ------ Totals $102,278 $31,771 $2,454 $3,474 ======== ======= ====== ====== As of March 31, 2006, the components of Distributable Earnings/ (Accumulated Losses) on a tax basis were as follows ($ Thousands): - -------------------------------------------------------------------------------- S&P 500 Bond Index Fund Index Fund - -------------------------------------------------------------------------------- Undistributed ordinary income $ 1,598 $ 147 Undistributed long-term capital gain 32,695 -- Post-October losses -- (77) Unrealized appreciation (depreciation) 727,397 (528) Other temporary differences -- (146) -------- ----- Total Distributable Earnings/ (Accumulated Losses) $761,690 $(604) ======== ===== Post-October losses represent losses realized on investment transactions from November 1, 2005 through March 31, 2006 that, in accordance with Federal income tax regulations, the Funds may elect to defer and treat as having arisen in the following fiscal year. At March 31, 2006, the total cost of securities and the net realized gains and losses on securities sold for Federal income tax purposes were different from amounts reported for financial reporting purposes, - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 25 Notes to Financial Statements (Concluded) March 31, 2006 primarily due to wash sales which cannot be used for Federal income tax purposes in the current year and have been deferred for use in future years. The Federal tax cost and aggregate gross unrealized appreciation and depreciation on investments held by the Funds at March 31, 2006 were as follows ($ Thousands): - -------------------------------------------------------------------------------- Aggregate Aggregate Net Gross Gross Unrealized Federal Unrealized Unrealized Appreciation Tax Cost Appreciation Depreciation (Depreciation) - -------------------------------------------------------------------------------- S&P 500 Index Fund $1,854,152 $850,049 $(122,652) $727,397 Bond Index Fund 37,284 356 (884) (528) 7. INVESTMENT RISKS In the normal course of business, the Funds enter into contracts that provide general indemnifications by the Fund to the counterparty to the contract. The Funds' maximum exposure under these arrangements is dependent on future claims that may be made against the Funds and, therefore, cannot be established; however, based on experience, the risk of loss from such claim is considered remote. 8. SECURITIES LENDING Each Fund, along with other funds in the SEI family of funds, may lend portfolio securities to brokers, dealers and other financial organizations that meet capital and other credit requirements or other criteria established by the Trust's Board of Trustees. These loans may not exceed 33 1/3% of the total asset value of the Fund (including the loan collateral). No Fund will lend portfolio securities to its Investment Adviser, sub-adviser or their affiliates unless it has applied for and received specific authority to do so from the SEC. Loans of portfolio securities will be fully collateralized by cash, letters of credit, corporate obligations, asset-back securities, repurchase agreements, master notes or U.S. Government securities, and the collateral will be maintained in an amount equal to at least 100% of the current market value of the loaned securities by marking to market daily, although the borrower will be required to deliver collateral of 102% and 105% of the market value of borrowed securities for domestic and foreign securities, respectively. Although the risk of lending is mitigated by the collateral, a Fund could experience delay in recovering its securities and a possible loss of income or value if the borrower fails to return them. The S&P 500 Index Fund received cash as collateral for securities on loan and made investments. Investments purchased with cash collateral are presented on the schedule of investments. 9. IN-KIND TRANSFER OF SECURITIES During the year ended March 31, 2006, the S&P 500 Index Fund issued shares of beneficial interest in exchange for securities. The securities were transferred at their current value on the date of transaction. - -------------------------------------------------------------------------------- Transaction Shares Date Issued Value - -------------------------------------------------------------------------------- S&P 500 Index Fund 09/30/05 5,036,833 $191,047,087 03/31/06 845,413 32,531,494 10. CHANGE IN INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM (UNAUDITED) The Board of Trustees (the "Board") has selected KPMG LLP ("KPMG") to serve as the Trust's independent registered public accounting firm for the Trust's fiscal year ended March 31, 2006. The decision to select KPMG was recommended by the Audit Committee and was approved by the Board on September 21, 2005. During the Trust's fiscal years ended March 31, 2005 and March 31, 2004 and through September 21, 2005, neither the Trust, its portfolios nor anyone on their behalf has consulted with KPMG on items which (i) concerned the application of accounting principles to a specified transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Trust's financial statements; or (ii) concerned the subject of a disagreement (as defined in paragraph (a)(1)(iv) of Item 304 of Regulation S-K) or reportable events (as described in paragraph (a)(1)(iv) of said Item 304). The selection of KPMG does not reflect any disagreements with or dissatisfaction by the Trust or the Board with the performance of the Trust's prior auditor. The decision to dismiss Ernst & Young LLP ("E&Y"), the Trust's previous independent registered public accounting firm, and to select KPMG was recommended by the Trust's Audit Committee and approved by the Fund's Board of Trustees. E&Y's report on the Trust's financial statements for the fiscal years ended March 31, 2005 and March 31, 2004 contained no adverse opinion or disclaimer of opinion nor were they qualified or modified as to uncertainty, audit scope or accounting principles. During the Trust's fiscal years ended March 31, 2005 and March 31, 2004 and through September 21, 2005, (i) there were no disagreements with E&Y on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of E&Y, would have caused it to make reference to the subject matter of the disagreements in connection with its reports on the Trust's financial statements for such years, and (ii) there were no "reportable events" of the kind described in Item 302(a)(1)(v) of Regulation S-K under the Securities Exchange Act of 1934, as amended. - -------------------------------------------------------------------------------- 26 SEI Index Funds / Annual Report / March 31, 2006 SEI INDEX FUNDS -- MARCH 31, 2006 Report of Independent Registered Public Accounting Firm To the Board of Trustees and Shareholders of SEI Index Funds: We have audited the accompanying statement of assets and liabilities, including the schedule of investments, of the S&P 500 Index Fund and the statement of net assets of the Bond Index Fund, the two Funds comprising the SEI Index Funds, (collectively, the "Funds"), as of March 31, 2006, and the related statements of operations and changes in net assets, and the financial highlights for the year then ended. These financial statements and financial highlights are the responsibility of the Funds' management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. The statements of changes in net assets for the year-ended March 31, 2005 and the financial highlights for each of the years in the three-year period then ended were audited by other auditors. Those auditors expressed an unqualified opinion on those statements of changes in net assets and financial highlights in their report dated May 13, 2005. The financial highlights for the year ended March 31, 2002, were audited by other auditors who have ceased operations. Those auditors expressed an unqualified opinion on those financial highlights in their report dated April 30, 2002. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as of March 31, 2006, by correspondence with custodians and brokers. As to securities purchased or sold but not yet received or delivered, we performed other appropriate auditing procedures. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of each of the aforementioned funds of SEI Index Funds as of March 31, 2006, and the results of their operations, the changes in their net assets, and the financial highlights for the year then ended, in conformity with U.S. generally accepted accounting principles. [SIGNATURE OMITTED] /s/ KPMG LLP Philadelphia, Pennsylvania May 23, 2006 - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 27 TRUSTEES AND OFFICERS OF THE TRUST (UNAUDITED) The following chart lists Trustees and Officers as of May 28, 2006. Set forth below are the names, addresses, ages, position with the Trust, Term of Office and Length of Time Served, the principal occupations for the last five years, number of portfolios in fund complex overseen by trustee, and other directorships outside the fund complex of each of the persons currently serving as Trustees and Officers of the Trust. The Trust's Statement of Additional Information ("SAI") includes additional information about the Trustees and Officers. The SAI may be obtained without charge by calling 1-800-342-5734. - ------------------------------------------------------------------------------------------------------------------------------------ TERM OF NUMBER OF OFFICE PORTFOLIOS AND PRINCIPAL IN FUND NAME POSITION(S) LENGTH OF OCCUPATION(S) COMPLEX OTHER DIRECTORSHIPS ADDRESS, HELD WITH TIME DURING PAST OVERSEEN HELD BY AND AGE TRUSTS SERVED1 FIVE YEARS BY TRUSTEE 2 TRUSTEE - ------------------------------------------------------------------------------------------------------------------------------------ INTERESTED TRUSTEES - ------------------- Robert A. Nesher Chairman since 1982 Currently performs various 72 Trustee of The Advisors' Inner One Freedom of the services on behalf of SEI Circle Fund, The Advisors Valley Drive, Board of for which Mr. Nesher is Inner Circle Fund II, Bishop Oaks, PA 19456 Trustees* compensated. Street Funds, Director of 59 yrs. old SEI Global Master Fund, plc, SEI Global Assets Fund, plc, SEI Global Investments Fund, plc, SEI Investments Global, Limited, SEI Investments -- Global Fund Services, Limited, SEI Investments (Europe), Limited, SEI Investments -- Unit Trust Management (UK), Limited, SEI Global Nominee Ltd., SEI Absolute Return Master Fund, L.P., SEI Absolute Return Fund, L.P., SEI Opportunity Master Fund, L.P., SEI Opportunity Fund, L.P. and SEI Multi-Strategy Funds plc. - ------------------------------------------------------------------------------------------------------------------------------------ William M. Doran Trustee* since 1982 Self-employed consultant since 2003. 72 Trustee of The Advisors' Inner 1701 Market Street Partner, Morgan, Lewis & Bockius Circle Fund, The Advisors, Philadelphia, PA LLP(law firm) from 1976 to 2003, Inner Circle Fund II, Director 19103 counsel to the Trust, SEI, SIMC, the of SEI since 1974. Director of 66 yrs. old Administrator and the Distributor. the Distributor since 2003. Secretary of SEI since 1978. Director of SEI Investments -- Global Fund Services, Limited, SEI Investments Global, Limited, SEI Investments (Europe), Limited, SEI Investments (Asia), Limited and SEI Asset Korea Co., Ltd. - ------------------------------------------------------------------------------------------------------------------------------------ TRUSTEES - -------- F. Wendell Gooch Trustee since 1982 Retired 72 Trustee of STI Classic Funds One Freedom and STI Classic Variable Trust. Valley Drive, Oaks, PA 19456 73 yrs. old - ------------------------------------------------------------------------------------------------------------------------------------ James M. Storey Trustee since 1995 Attorney, sole practitioner 72 Trustee of The Advisors' Inner One Freedom since 1994. Partner, Dechert Circle Fund, The Advisors' Valley Drive, Price & Rhoads, September 1987- Inner Circle Fund II, Oaks, PA 19456 December 1993. Massachusetts Health and 75 yrs. old Education Tax-Exempt Trust, and U.S. Charitable Gift Trust. - ------------------------------------------------------------------------------------------------------------------------------------ * MESSRS. NESHER AND DORAN ARE TRUSTEES WHO MAY BE DEEMED AS "INTERESTED" PERSONS OF THE TRUST AS THAT TERM IS DEFINED IN THE 1940 ACT BY VIRTUE OF THEIR AFFILIATION WITH SIMC AND THE TRUST'S DISTRIBUTOR. 1 EACH TRUSTEE SHALL HOLD OFFICE DURING THE LIFETIME OF THIS TRUST UNTIL THE ELECTION AND QUALIFICATION OF HIS OR HER SUCCESSOR, OR UNTIL HE OR SHE SOONER DIES, RESIGNS OR IS REMOVED IN ACCORDANCE WITH THE TRUST'S DECLARATION OF TRUST. 2 THE FUND COMPLEX INCLUDES THE FOLLOWING TRUSTS: SEI ASSET ALLOCATION TRUST, SEI DAILY INCOME TRUST, SEI INDEX FUNDS, SEIINSTITUTIONAL INVESTMENTS TRUST, SEI INSTITUTIONAL INTERNATIONAL TRUST, SEI INSTITUTIONAL MANAGED TRUST, SEI LIQUID ASSET TRUST AND SEI TAX EXEMPT TRUST. - -------------------------------------------------------------------------------- 28 SEI Index Funds / Annual Report / March 31, 2006 - ------------------------------------------------------------------------------------------------------------------------------------ TERM OF NUMBER OF OFFICE PORTFOLIOS AND PRINCIPAL IN FUND NAME POSITION(S) LENGTH OF OCCUPATION(S) COMPLEX OTHER DIRECTORSHIPS ADDRESS, HELD WITH TIME DURING PAST OVERSEEN HELD BY AND AGE TRUSTS SERVED1 FIVE YEARS BY TRUSTEE 2 TRUSTEE - ------------------------------------------------------------------------------------------------------------------------------------ TRUSTEES (CONTINUED) - -------- George J. Sullivan, Jr. Trustee since 1996 Self-Employed Consultant, Newfound 72 Trustee of The Advisors' Inner One Freedom Consultants Inc. since April 1997. Circle Fund, The Advisors Valley Drive Inner Circle Fund II, State Oaks, PA 19456 Street Navigator Securities 63 yrs. old Lending Trust, SEI Absolute Return Master Fund, L.P., SEI Absolute Return Fund, L.P., SEI Opportunity Master Fund, L.P., and SEI Opportunity Fund, L.P. - ------------------------------------------------------------------------------------------------------------------------------------ Rosemarie B. Greco Trustee since 1999 Director, Governor's Office of Health 72 Director, Sonoco, Inc.; Director, One Freedom` Care Reform, Commonwealth of ExelonCorporation; Trustee, Valley Drive Pennsylvania since 2003. Founder Pennsylvania Real Estate Oaks, PA 19456 and Principal, Grecoventures Ltd. Investment Trust. 60 yrs. old from 1999 to 2002. - ------------------------------------------------------------------------------------------------------------------------------------ Nina Lesavoy Trustee since 2003 Managing Partner, Cue Capital since 72 SEI Absolute Return Master One Freedom March 2002, Managing Partner and Fund, L.P., SEI Absolute Return Valley Drive, Head of Sales, Investorforce, March Fund, L.P., SEI Opportunity Oaks, PA 19456 2000-December 2001; Global Partner Master Fund, L.P., and SEI 48 yrs. old working for the CEO, Invesco Capital, Opportunity Fund, L.P. January 1998-January 2000. Head of Sales and Client Services, Chancellor Capital and later LGT Asset Management, 1986-2000. - ------------------------------------------------------------------------------------------------------------------------------------ James M. Williams Trustee since 2004 Vice President and Chief Investment 72 SEI Absolute Return Master One Freedom Officer, J. Paul Getty Trust, Non- Fund, L.P., SEI Absolute Return Valley Drive, Profit Foundation for Visual Arts, Fund, L.P., SEI Opportunity Oaks, PA 19456 since December 2002. President, Harbor Master Fund, L.P., and SEI 58 yrs. old Capital Advisors and Harbor Mutual Opportunity Fund, L.P. Funds, 2000-2002. Manager, Pension Asset Management, Ford Motor Company, 1997-1999. - ------------------------------------------------------------------------------------------------------------------------------------ OFFICERS - -------- Robert A. Nesher President since 2005 Currently performs various services N/A N/A One Freedom & CEO on behalf of SEI for which Valley Drive, Mr. Nesher is compensated. Oaks, PA 19456 59 yrs. old - ------------------------------------------------------------------------------------------------------------------------------------ Stephen F. Panner Controller and since 2005 Fund Accounting Director of the N/A N/A One Freedom Chief Administrator since 2005. Fund Valley Drive, Financial Administration Manager, Old Mutual Oaks, PA 19456 Officer Fund Services, 2000-2005. Chief 35 yrs. old Financial Officer, Controller and Treasurer, PBHG Funds and PBHG Insurance Series Fund, 2004-2005. Assistant Treasurer, PBHG Funds and PBHG Insurance Series Fund, 2000-2004. Assistant Treasurer, Old Mutual Advisors Fund, 2004-2005. - ------------------------------------------------------------------------------------------------------------------------------------ Russell Emery Chief since 2006 Director of Investment Product N/A N/A One Freedom Compliance Management and Development Valley Drive Officer of SEI since 2003. Senior Oaks, PA 19456 Investment Analyst--Equity Team of 43 yrs. old SIMC, (2000-2003). - ------------------------------------------------------------------------------------------------------------------------------------ - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 29 TRUSTEES AND OFFICERS OF THE TRUST (UNAUDITED) (CONCLUDED) - ------------------------------------------------------------------------------------------------------------------------------------ TERM OF NUMBER OF OFFICE PORTFOLIOS AND PRINCIPAL IN FUND NAME POSITION(S) LENGTH OF OCCUPATION(S) COMPLEX OTHER DIRECTORSHIPS ADDRESS, HELD WITH TIME DURING PAST OVERSEEN HELD BY AND AGE TRUSTS SERVED1 FIVE YEARS BY TRUSTEE2 TRUSTEE - ------------------------------------------------------------------------------------------------------------------------------------ OFFICERS (CONTINUED) - -------------------- Timothy D. Barto Vice since 2002 General Counsel, Vice President and N/A N/A One Freedom President Secretary of SIMC and the Administrator Valley Drive and since 2004. Vice President and Assistant Oaks, PA 19456 Secretary Secretary of SEI since 2001. Vice President 38 yrs. old of SIMC and the Administrator since 1999. Assistant Secretary of SIMC, the Administrator and the Distributor and Vice President of the Distributor, 1999-2003. - ------------------------------------------------------------------------------------------------------------------------------------ Sofia A. Rosala Vice since 2004 Vice President and Assistant Secretary of N/A N/A One Freedom President SIMC and the Administrator since 2005. Valley Drive and Compliance Officer of SEI September 2001- Oaks, PA 19456 Assistant 2004. Account and Product Consultant, 32 yrs. old Secretary SEI Private Trust Company, 1998-2001. - ------------------------------------------------------------------------------------------------------------------------------------ Philip T. Masterson Vice since 2004 Vice President and Assistant Secretary of N/A N/A One Freedom President SIMC since 2005. General Counsel, Valley Drive and Citco Mutual Fund Services, 2003-2004. Oaks, PA 19456 Assistant Vice President and Associate Counsel, 42 yrs. old Secretary Oppenheimer Funds, 2001-2003. Vice President and Assistant Counsel, Oppenheimer Funds, 1997-2001. - ------------------------------------------------------------------------------------------------------------------------------------ James Ndiaye Vice since 2005 Vice President and Assistant Secretary of N/A N/A One Freedom President SIMC since 2005. Vice President, Valley Drive and Deutsche Asset Management (2003-2004). Oaks, PA 19456 Assistant Associate, Morgan, Lewis & Bockius LLP 37 yrs. old Secretary (2000-2003). Assistant Vice President, ING Variable Annuities Group (1999-2000). - ------------------------------------------------------------------------------------------------------------------------------------ Michael T. Pang Vice since 2005 Vice President and Assistant Secretary of N/A N/A One Freedom President SIMC since 2005. Counsel, Caledonian Valley Drive and Bank & Trust's Mutual Funds Group (2004). Oaks, PA 19456 Assistant Counsel, Permal Asset Management 33 yrs. old Secretary (2001-2004). Associate, Schulte, Roth & Zabel's Investment Management Group (2000-2001). Staff Attorney, U.S. SEC's Division of Enforcement, Northeast Regional Office (1997-2000). - ------------------------------------------------------------------------------------------------------------------------------------ John J. McCue Vice since 2004 Director of Portfolio Implementations for N/A N/A One Freedom President SIMC since 1995. Managing Director Valley Drive of Money Market Investments for SIMC Oaks, PA 19456 since 2003. 43 yrs. old - ------------------------------------------------------------------------------------------------------------------------------------ Nicole Welch Anti-Money since 2005 Assistant Vice President and Anti-Money N/A N/A One Freedom Laundering Laundering Compliance Coordinator of Valley Drive Compliance SEI since 2005. Compliance Analyst, TD Oaks, PA 19456 Officer Waterhouse (2004). Senior Compliance 28 yrs. old Analyst, UBS Financial Services (2002-2004). Knowledge Management Analyst, PriceWaterhouseCoopers Consulting (2000-2002). - ------------------------------------------------------------------------------------------------------------------------------------ 1 EACH TRUSTEE SHALL HOLD OFFICE DURING THE LIFETIME OF THIS TRUST UNTIL THE ELECTION AND QUALIFICATION OF HIS OR HER SUCCESSOR, OR UNTIL HE OR SHE SOONER DIES, RESIGNS OR IS REMOVED IN ACCORDNCE WITH THE TRUST'S DECLARATION OF TRUST. 2 THE FUND COMPLEX INCLUDES THE FOLLOWING TRUSTS: SEI ASSET ALLOCATION TRUST, SEI DAILY INCOME TRUST, SEI INDEX FUNDS, SEIINSTITUTIONAL INVESTMENTS TRUST, SEI INSTITUTIONAL INTERNATIONAL TRUST, SEI INSTITUTIONAL MANAGED TRUST, SEI LIQUID ASSET TRUST AND SEI TAX EXEMPT TRUST. - -------------------------------------------------------------------------------- 30 SEI Index Funds / Annual Report / March 31, 2006 Disclosure of Fund Expenses (Unaudited) All mutual funds have operating expenses. As a shareholder of a mutual fund, your investment is affected by these ongoing costs, which include (among others) costs for portfolio management, administrative services, and shareholder reports like this one. It is important for you to understand the impact of these costs on your investment returns. Operating expenses such as these are deducted from the mutual fund's gross income and directly reduce your final investment return. These expenses are expressed as a percentage of the mutual fund's average net assets; this percentage is known as the mutual fund's expense ratio. The following examples use the expense ratio and are intended to help you understand the ongoing costs (in dollars) of investing in your Fund and to compare these costs with those of other mutual funds. The examples are based on an investment of $1,000 made at the beginning of the period shown and held for the entire period. The table below illustrates your Fund's costs in two ways: ACTUAL FUND RETURN. This section helps you to estimate the actual expenses after fee waivers that your Fund incurred over the period. The "Expenses Paid During Period" column shows the actual dollar expense cost incurred by a $1,000 investment in the Fund, and the "Ending Account Value" number is derived from deducting that expense cost from the Fund's gross investment return. You can use this information, together with the actual amount you invested in the Fund, to estimate the expenses you paid over that period. Simply divide your actual account value by $1,000 to arrive at a ratio (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply that ratio by the number shown for your Fund under "Expenses Paid During Period." HYPOTHETICAL 5% RETURN. This section helps you compare your Fund's costs with those of other mutual funds. It assumes that the Fund had an annual 5% return before expenses during the year, but that the expense ratio (Column 3) for the period is unchanged. This example is useful in making comparisons because the Securities and Exchange Commission requires all mutual funds to make this 5% calculation. You can assess your Fund's comparative cost by comparing the hypothetical result for your Fund in the "Expenses Paid During Period" column with those that appear in the same charts in the shareholder reports for other mutual funds. NOTE: Because the return is set at 5% for comparison purposes -- NOT your Fund's actual return -- the account values shown may not apply to your specific investment. BEGINNING ENDING EXPENSES ACCOUNT ACCOUNT ANNUALIZED PAID VALUE VALUE EXPENSE DURING 10/01/05 3/31/06 RATIOS PERIOD* - -------------------------------------------------------------------------------- S&P 500 INDEX FUND - -------------------------------------------------------------------------------- ACTUAL FUND RETURN Class A $1,000.00 $1,062.10 0.40% $2.06 Class E 1,000.00 1,062.60 0.25% 1.29 Class I 1,000.00 1,060.50 0.65% 3.34 HYPOTHETICAL 5% RETURN Class A $1,000.00 $1,022.94 0.40% $2.02 Class E 1,000.00 1,023.68 0.25% 1.26 Class I 1,000.00 1,021.69 0.65% 3.28 BEGINNING ENDING EXPENSES ACCOUNT ACCOUNT ANNUALIZED PAID VALUE VALUE EXPENSE DURING 10/01/05 3/31/06 RATIOS PERIOD* - -------------------------------------------------------------------------------- BOND INDEX FUND - -------------------------------------------------------------------------------- ACTUAL FUND RETURN Class A $1,000.00 $ 997.40 0.38% $1.89 HYPOTHETICAL 5% RETURN Class A $1,000.00 $1,023.04 0.38% 1.92 * EXPENSES ARE EQUAL TO THE FUND'S ANNUALIZED EXPENSE RATIO MULTIPLIED BY THE AVERAGE ACCOUNT VALUE OVER THE PERIOD, MULTIPLIED BY 182/365 (TO REFLECT THE ONE-HALF YEAR PERIOD SHOWN). - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 31 Board of Trustees Considerations in Approving the Advisory and Sub-Advisory Agreements (Unaudited) The SEI Index Funds (the "Trust") and SEI Investments Management Corporation ("SIMC") have entered into an investment advisory agreement (the "Advisory Agreement"). Pursuant to the Advisory Agreement, SIMC oversees the investment advisory services provided to each series of the Trust (each, a "Fund" and, collectively, the "Funds") and may manage the cash portion of the Funds' assets. Pursuant to separate sub-advisory agreements (the "Sub-Advisory Agreements" and, together with the Advisory Agreement, the "Investment Advisory Agreements") with SIMC, and under the supervision of SIMC and the Trust's Board of Trustees (the "Board"), the Sub-Advisers are responsible for the day-to-day investment management of all or a discrete portion of the assets of the Funds. The Sub-Advisers also are responsible for managing their employees who provide services to these Funds. The Sub-Advisers are selected based primarily upon the research and recommendations of SIMC, which evaluates quantitatively and qualitatively each Sub-Adviser's skills and investment results in managing assets for specific asset classes, investment styles and strategies. The Investment Company Act of 1940, as amended (the "1940 Act") requires that the initial approval of, as well as the continuation of, each Fund's Investment Advisory Agreements must be specifically approved: (i) by the vote of the Board of Trustees or by a vote of the shareholders of the Fund; and (ii) by the vote of a majority of the Trustees who are not parties to the Investment Advisory Agreements or "interested persons" of any party (the "Independent Trustees"), cast in person at a meeting called for the purpose of voting on such approval. In connection with their consideration of such approvals, the Fund's Trustees must request and evaluate, and SIMC and the Sub-Advisers are required to furnish, such information as may be reasonably necessary to evaluate the terms of the Investment Advisory Agreements. In addition, the Securities and Exchange Commission ("SEC") takes the position that, as part of their fiduciary duties with respect to a mutual fund's fees, mutual fund boards are required to evaluate the material factors applicable to a decision to approve an Investment Advisory Agreement. Consistent with these responsibilities, the Trust's Board of Trustees calls and holds meetings each year that are dedicated to considering whether to renew the Investment Advisory Agreements between the Trust and SIMC and SIMC and each of the Sub-Advisers with respect to the Funds of the Trust. In preparation for these meetings, the Board requests and reviews a wide variety of materials provided by SIMC and the Sub-Advisers, including information about SIMC's and the Sub-Advisers' affiliates, personnel and operations. The Board also receives extensive data provided by third parties. This information is in addition to the detailed information about the Funds that the Board reviews during the course of each year, including information that relates to Fund operations and Fund performance. The Trustees also receive a memorandum from Fund counsel and independent counsel to the Independent Trustees regarding the responsibilities of Trustees in connection with their consideration of whether to approve the Trust's Investment Advisory Agreements. Finally, the Independent Trustees receive advice from independent counsel to the Independent Trustees, meet in executive session outside the presence of Fund management and participate in question and answer sessions with representatives of SIMC and the Sub-Advisers. Specifically, the Board requested and received written materials from SIMC and each Sub-Adviser regarding: (a) the quality of SIMC's and the Sub-Adviser's investment management and other services; (b) SIMC's and the Sub-Adviser's investment management personnel; (c) SIMC's and the Sub-Adviser's operations and financial condition; (d) SIMC's and the Sub-Adviser's brokerage practices (including any soft dollar arrangements) and investment strategies; (e) the level of the advisory fees that SIMC and each Sub-Adviser charge a Fund compared with the fees each charge to comparable mutual funds; (f) a Fund's overall fees and operating expenses compared with similar mutual funds; (g) the level of SIMC's and each Sub-Adviser's profitability from its Fund-related operations; (h) SIMC's and the Sub-Adviser's compliance systems; (i) SIMC's and the Sub-Adviser's policies on and compliance procedures for personal securities transactions; (j) SIMC's and the Sub-Adviser's reputation, expertise and resources in domestic and/or international financial markets; and (k) each Fund's performance compared with similar mutual funds. At the September 20, 2005, September 21, 2005 and March 8, 2006 meetings of the Board of Trustees, the Trustees, including a majority of the Independent Trustees, approved the Investment Advisory Agreements and approved the selection of SIMC and the Sub-Advisers to act in their respective capacities for the Funds. The Board's approval was based on its consideration and evaluation of a variety of specific factors discussed at the meetings and at prior meetings, including: o the nature, extent and quality of the services provided to the Funds under the Investment Advisory Agreements, including the resources of SIMC and the Sub-Advisers and their affiliates dedicated to the Funds; - -------------------------------------------------------------------------------- 32 SEI Index Funds / Annual Report / March 31, 2006 o each Fund's investment performance and how it compared to that of other comparable mutual funds; o each Fund's expenses under each Investment Advisory Agreement and how those expenses compared to those of other comparable mutual funds; o the profitability of SIMC and the Sub-Advisers and their affiliates with respect to each Fund, including both direct and indirect benefits accruing to SIMC and the Sub-Advisers and their affiliates; and o the extent to which economies of scale would be realized as the Funds grow and whether fee levels in the Investment Advisory Agreements reflect those economies of scale for the benefit of Fund investors. NATURE, EXTENT AND QUALITY OF SERVICES. The Board of Trustees considered the nature, extent and quality of the services provided by SIMC and the Sub-Advisers to the Funds and the resources of SIMC and the Sub-Advisers and their affiliates dedicated to the Funds. In this regard, the Trustees evaluated, among other things, SIMC's and the Sub-Advisers' personnel, experience, track record and compliance program. Following evaluation, the Board concluded that, within the context of its full deliberations, the nature, extent and quality of services provided by SIMC and the Sub-Advisers to the Funds and the resources of SIMC and the Sub-Advisers and their affiliates dedicated to the Funds supported renewal of the Investment Advisory Agreements. FUND PERFORMANCE. The Board of Trustees considered Fund performance in determining whether to renew the Investment Advisory Agreements. Specifically, the Trustees considered each Fund's performance relative to its peer group and appropriate indices/benchmarks, in light of total return, yield and market trends. As part of this review, the Trustees considered the composition of the peer group and selection criteria. In evaluating performance, the Trustees considered both market risk and shareholder risk expectations for a given Fund. Following evaluation, the Board concluded that, within the context of its full deliberations, the performance of the Funds supported renewal of the Investment Advisory Agreements. FUND EXPENSES. With respect to the Funds' expenses under the Investment Advisory Agreements, the Trustees considered the rate of compensation called for by the Investment Advisory Agreements and each Fund's net operating expense ratio in comparison to those of other comparable mutual funds. The Trustees also considered information about average expense ratios of comparable mutual funds in each Fund's respective peer group. Finally, the Trustees considered the effects of SIMC's voluntary waiver of management and other fees and the Sub-Advisers' fees to prevent total Fund expenses from exceeding a specified cap and that SIMC and the Sub-Advisers, through waivers, have maintained the Funds' net operating expenses at competitive levels for their respective distribution channels. Following evaluation, the Board concluded that, within the context of its full deliberations, the expenses of the Funds are reasonable and supported renewal of the Investment Advisory Agreements. PROFITABILITY. With regard to profitability, the Trustees considered all compensation flowing to SIMC and the Sub-Advisers and their affiliates, directly or indirectly. The Trustees considered whether the varied levels of compensation and profitability under the Investment Advisory Agreements and other service agreements were reasonable and justified in light of the quality of all services rendered to the Funds by SIMC and the Sub-Advisers and their affiliates. When considering the profitability of the Sub-Advisors, the Board took into account the fact that the Sub-Advisors are compensated by SIMC, and not by the Funds directly, and such compensation with respect to any Sub-Advisor reflects an arms-length negotiation between the Sub-Advisor and SIMC. Based on this evaluation, the Board concluded that, within the context of its full deliberations, the profitability of SIMC and the Sub-Advisers is reasonable and supported renewal of the Investment Advisory Agreements. ECONOMIES OF SCALE. The Trustees considered the existence of any economies of scale and whether those were passed along to a Fund's shareholders through a graduated investment advisory fee schedule or other means, including any fee waivers by SIMC and its affiliates. Based on this evaluation, the Board concluded that, within the context of its full deliberations, the Funds obtain reasonable benefit from economies of scale. Based on the Trustees' deliberation and their evaluation of the information described above, the Board, including all of the Independent Trustees, unanimously approved the continuation of the Investment Advisory Agreements and concluded that the compensation under the Investment Advisory Agreements is fair and reasonable in light of such services and expenses and such other matters as the Trustees considered to be relevant in the exercise of their reasonable judgment. In the course of their deliberations, the Trustees did not identify any particular information that was all-important or controlling. - -------------------------------------------------------------------------------- SEI Index Funds / Annual Report / March 31, 2006 33 Notice to Shareholders (Unaudited) FOR SHAREHOLDERS THAT DO NOT HAVE A MARCH 31, 2006 TAXABLE YEAR END, THIS NOTICE IS FOR INFORMATIONAL PURPOSES ONLY. For shareholders with a March 31, 2006 taxable year end, please consult your tax advisor as to the pertinence of this notice. For the fiscal year ended March 31, 2006 the Funds are designating long term capital gains and qualifying dividend income with regard to distributions paid during the year as follows: (B) (C) (A) ORDINARY QUALIFYING FOR LONG TERM (15%) INCOME TOTAL CORPORATE CAPITAL GAINS DISTRIBUTIONS DISTRIBUTIONS DIVIDENDS RECEIVED FUND DISTRIBUTIONS (TAX BASIS) (TAX BASIS) DEDUCTION (2) - --------- --------------- ------------- ------------- ------------------ S&P 500 Index 68.39% 31.61% 100.00% 100.00% Bond Index (1) 11.49% 88.51% 100.00% 0.00% (D) QUALIFYING U.S. QUALIFIED QUALIFIED DIVIDEND GOVERNMENT INTEREST SHORT-TERM FUND INCOME(3) INTEREST(4) INCOME (5) CAPITAL GAIN (6) - --------- ----------- ------------- ---------- ---------------- S&P 500 Index 100.00% 0.16% 2.46% 0.21% Bond Index 0.00% 22.21% 90.79% 0.00% (1) The Bond Index Fund does not satisfy statutory requirements to pass through income from Federal obligations. Accordingly, the pro-rata portion of income from Federal obligations may be exempt for those respective states' income tax purposes. (2) Qualifying dividends represent dividends which qualify for the corporate dividends received deduction. (3) The percentage in this column represents the amount of "Qualifying Dividend Income" as created by the Jobs and Growth Tax Relief Reconciliation Act of 2003 and is reflected as a percentage of ordinary income distributions (the total of short term capital gain and net investment income distributions). It is the intention of each of the aforementioned funds to designate the maximum amount permitted by law. (4) "U.S. Government Interest" represents the amount of interest that was derived from direct U.S. Government obligations and distributed during the fiscal year. This amount is reflected as a percentage of total ordinary income distributions (the total of short term capital gain and net investment income distributions). General interest from direct U.S. Government obligations is exempt from state income tax. (5) The percentage in this column represents the amount of "Qualifying Interest Income" as created by the American Jobs Creation Act of 2004 and is reflected as a percentage of net investment income distributions that is exempt from U.S. withholding tax when paid to foreign investors. (6) The percentage in this column represents the amount of "Qualifying Short-Term Capital Gain" as created by the American Jobs Creation Act of 2004 and is reflected as a percentage of short-term distributions that is exempt from U.S. withholding tax when paid to foreign investors. Items (A) and (B) are based on the percentage of each Fund's total distribution. Items (C) and (D) are based on the percentage of ordinary income of the Fund. - -------------------------------------------------------------------------------- 34 SEI Index Funds / Annual Report / March 31, 2006 Notes Notes SEI INDEX FUNDS ANNUAL REPORT MARCH 31, 2006 Robert A. Nesher, CHAIRMAN TRUSTEES William M. Doran F. Wendell Gooch James M. Storey George J. Sullivan, Jr. Rosemarie B. Greco Nina Lesavoy James M. Williams OFFICERS Robert A. Nesher PRESIDENT AND CHIEF EXECUTIVE OFFICER Stephen F. Panner CONTROLLER AND CHIEF FINANCIAL OFFICER Russell Emery CHIEF COMPLIANCE OFFICER Timothy D. Barto VICE PRESIDENT, SECRETARY Sofia A. Rosala VICE PRESIDENT, ASSISTANT SECRETARY Philip T. Masterson VICE PRESIDENT, ASSISTANT SECRETARY James Ndiaye VICE PRESIDENT, ASSISTANT SECRETARY Michael T. Pang VICE PRESIDENT, ASSISTANT SECRETARY John J. McCue VICE PRESIDENT Nicole Welch ANTI-MONEY LAUNDERING COMPLIANCE OFFICER INVESTMENT ADVISER SEI Investments Management Corporation ADMINISTRATOR SEI Investments Global Funds Services DISTRIBUTOR SEI Investments Distribution Co. LEGAL COUNSEL Morgan, Lewis & Bockius LLP INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM KPMG LLP This report and the financial statements contained herein are submitted for the general information of the shareholders of the Trust and must be preceded or accompanied by a current prospectus. Shares of the SEI Funds are not deposits or obligations of, or guaranteed or endorsed by, any bank. The shares are not federally insured by the Federal Deposit Insurance Corporation (FDIC), the Federal Reserve Board, or any other government agency. Investment in the shares involves risk, including the possible loss of principal. FOR MORE INFORMATION CALL 1 800 DIAL SEI (1 800 342 5734) [LOGO OMITTED] SEI New Ways New Answers SEI Investments Distribution Co. Oaks, PA 19456 1.800.DIAL.SEI (1.800.342.5734) SEI-F-091 (3/06) ITEM 2. CODE OF ETHICS. The registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, comptroller or principal accounting officer. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. (a) (1) The registrant's board of trustees has determined that the registrant has one audit committee financial expert serving on the audit committee. (a) (2) The audit committee financial expert is George J. Sullivan, Jr. Mr. Sullivan is an independent trustee as defined in Form N-CSR Item 3 (a) (2). ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. Fees billed by KPMG LLP ("KPMG") and Ernst & Young, LLP ("E&Y") related to the Trust. KPMG billed the Trust aggregate fees for services rendered to the Trust for the fiscal year 2006 and E&Y billed the Trust aggregate fees for services rendered to the Trust for the fiscal year 2005 as follows: - ------------------ ----------------------------------------------------- ----------------------------------------------------- 2006* 2005+ - ------------------ ----------------------------------------------------- ----------------------------------------------------- All fees and All fees and All other fees All fees and All fees and All other fees services to the services to and services to services to the services to and services to Trust that were service service Trust that were service service pre-approved affiliates that affiliates that pre-approved affiliates that affiliates that were pre- did not require were pre- did not require approved pre-approval approved pre-approval - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (a) Audit $31,500 N/A $ $33,500 N/A $0 Fees(1) - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (b) Audit- $0 $0 $0 $0 $0 $0 Related Fees - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (c) Tax $0 $0 $0 $0 $0 $0 Fees - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (d) All $0 $231,000 $0 $0 $0 $165,000 Other Fees - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- *KPMG +E&Y Notes: (1) Audit fees include amounts related to the audit of the registrant's annual financial statements and services normally provided by the accountant in connection with statutory and regulatory filings. (2) Non-audit fees include amounts related to services provided in connection with the SAS70 report on the hedge fund operations of the administrator. (e)(1) Not Applicable. (e)(2) Percentage of fees billed applicable to non-audit services pursuant to waiver of pre-approval requirement were as follows: ---------------------------- ----------------- ---------------- 2006* 2005+ ---------------------------- ----------------- ---------------- Audit-Related Fees 0% 0% ---------------------------- ----------------- ---------------- Tax Fees 0% 0% ---------------------------- ----------------- ---------------- All Other Fees 0% 0% ---------------------------- ----------------- ---------------- *KPMG +E&Y (f) Not applicable. (g)(1) The aggregate non-audit fees and services billed by KPMG for the fiscal year 2006 were $231,000. Non-audit fees consist of SAS No. 70 review of fund accounting and administration operations, attestation report in accordance with Rule 17 Ad-13, agreed upon procedures report over certain internal controls related to compliance with federal securities laws and regulations and tax consulting services for various service affiliates of the registrant. (g)(2) The aggregate non-audit fees and services billed by E&Y for the fiscal year 2005 were $165,000. Non-audit fees include amounts related to services provided in connection with the SAS No.70 report on the hedge fund operations of the administrator. (h) During the past fiscal year, Registrant's principal accountant provided certain non-audit services to Registrant's investment adviser or to entities controlling, controlled by, or under common control with Registrant's investment adviser that provide ongoing services to Registrant that were not subject to pre-approval pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X. The audit committee of Registrant's Board of Trustees reviewed and considered these non-audit services provided by Registrant's principal accountant to Registrant's affiliates, including whether the provision of these non-audit services is compatible with maintaining the principal accountant's independence. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS. Not applicable to open-end management investment companies. ITEM 6. SCHEDULE OF INVESTMENTS Not applicable. ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable to open-end management investment companies. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES Not applicable. Effective for closed-end management investment companies for fiscal years ending on or after December 31, 2005 ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT COMPANY AND AFFILIATED PURCHASERS. Not applicable to open-end management investment companies. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. The Trust has a standing Nominating Committee (the "Committee") currently consisting of the Independent Trustees. The Committee is responsible for evaluating and recommending nominees for election to the Trust's Board of Trustees (the "Board"). Pursuant to the Committee's Charter, adopted on June 18, 2004, the Committee will review all shareholder recommendations for nominations to fill vacancies on the Board if such recommendations are submitted in writing and addressed to the Committee at the Trust's office. ITEM 11. CONTROLS AND PROCEDURES. (a) The certifying officers, whose certifications are included herewith, have evaluated the registrant's disclosure controls and procedures within 90 days of the filing date of this report. Based on their evaluation, certifying officers have concluded that the the registrant's disclosure controls and procedures are adequately designed, and are operating effectively to ensure, that information required to be disclosed by the registrant in the reports it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (b) There were no significant changes in the registrant's internal control over financial reporting that occurred during the registrant's last fiscal half-year that have materially affected, or are reasonably likely to materially affect, the registrants internal control over financial reporting. ITEMS 12. EXHIBITS. (a)(1) Code of Ethics attached hereto. (a)(2) A separate certification for the principal executive officer and the principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended (17 CFR 270.30a-2(a)), are filed herewith. (b) Officer certifications as required by Rule 30a-2(b) under the Investment Company Act of 1940, as amended (17 CFR 270.30a-2(b)) also accompany this filing as an Exhibit. - -------------------------------------------------------------------------------- SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) SEI Index Funds By (Signature and Title)* /s/ Robert A. Nesher --------------------------------- Robert A. Nesher, Chief Executive Officer Date: June 5, 2006 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ Robert A. Nesher --------------------------------- Robert A. Nesher, Chief Executive Officer Date: June 5, 2006 By (Signature and Title)* /s/ Stephen F. Panner --------------------------------- Stephen F. Panner, Controller & CFO Date: June 5, 2006 * Print the name and title of each signing officer under his or her signature.