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 811-07257 SEI INSTITUTIONAL INVESTMENTS TRUST (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) c/o CT Corporation 101 Federal St. Boston, MA 02110 (Name and address of agent for service) REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: 1-800-342-5734 DATE OF FISCAL YEAR END: MAY 31, 2005 DATE OF REPORTING PERIOD: MAY 31, 2005 ITEM 1. REPORTS TO STOCKHOLDERS. [BACKGROUND GRAPHIC OMITTED] SEI INVESTMENTS Annual Report as of May 31, 2005 SEI Institutional Investments Trust Large Cap Fund Large Cap Disciplined Equity Fund Large Cap Index Fund Small Cap Fund Small/Mid Cap Equity Fund Core Fixed Income Fund Long Duration Fund Extended Duration Fund International Equity Fund World Equity Ex-US Fund TABLE OF CONTENTS - -------------------------------------------------------------------------------- Management's Discussion and Analysis of Fund Performance 1 - -------------------------------------------------------------------------------- Report of Independent Registered Public Accounting Firm 10 - -------------------------------------------------------------------------------- Statements of Net Assets/Schedules of Investments 12 - -------------------------------------------------------------------------------- Statements of Assets and Liabilities 113 - -------------------------------------------------------------------------------- Statements of Operations 114 - -------------------------------------------------------------------------------- Statements of Changes in Net Assets 116 - -------------------------------------------------------------------------------- Financial Highlights 119 - -------------------------------------------------------------------------------- Notes to Financial Statements 121 - -------------------------------------------------------------------------------- Trustees and Officers of the Trust 131 - -------------------------------------------------------------------------------- Disclosure of Fund Expenses 134 - -------------------------------------------------------------------------------- Board of Trustees Considerations in Approving the Advisory and Sub-Advisory Agreements 136 - -------------------------------------------------------------------------------- Notice to Shareholders 140 - -------------------------------------------------------------------------------- Shareholder Voting Results 141 - -------------------------------------------------------------------------------- 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 Forms N-Q are 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-DIAL-SEI; and (ii) on the Commission's website at http://www.sec.gov. - -------------------------------------------------------------------------------- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Large Cap Fund Objective The Large Cap Fund (the "Fund") seeks to provide long-term growth of capital and income. Strategy The Fund employs a multi-manager structure to gain exposure to the entire large cap sector, adding value through stock selection while controlling risk in the form of capitalization and economic sector exposures. The Fund is jointly sub-advised by nine investment managers. Assets of the Fund are allocated among its sub-advisers, each of which has responsibility for stock selection for its respective assets under management. Each of the managers and their respective source of added value assumes a different importance in determining overall risk, and must therefore be weighted accordingly. Analysis The U.S. equity market advanced more than 9% for the fiscal year ended May 31, 2005, with nearly all of the gain coming during a strong market rally in the fourth quarter of 2004. The equity markets stumbled in the summer of 2004 as an inventory glut in the semi-conductor area dragged down the technology sector and weighed on the market. After the uncertainty of the U.S. presidential election passed, the market re-focused on corporations' healthy earnings and sent stocks sharply higher. Two big pharmaceutical companies, Merck and Pfizer, saw their stocks decline as their COX-2 inhibitor drugs were linked to heart problems. Energy and commodity prices continued their steady rise through the first quarter, which sent stocks in those sectors higher as well. Home builders also benefited as long-term interest rates and 30-year mortgage rates remained at attractive levels even though the Federal Reserve raised short-term interest rates 200 basis points over the fiscal year. For the fiscal year ended May 31, 2005, the energy and utility sectors led the market, advancing more than 35%, while information technology was the worst performing sector, registering a decline of about 1%. The Fund modestly lagged the overall market. Sector positioning was slightly negative as the relative return benefit from the underweight to healthcare and overweight to energy was offset by the underweight to utilities and industrials. An overweight to and security selection in the software service sector also weighed down returns. All of the value- oriented managers outperformed the broad market, with LSV Asset Management leading the way, as stocks with lower price/earnings ratios extended their multi-year winning streak over stocks with more growth characteristics. The growth-oriented managers lagged the overall market with the exception of Transamerica Investment Management, LCC ("Transamerica") and Delaware Management Company ("Delaware"). In April, Transamerica was replaced with Delaware as the San Francisco-based equity team left Transamerica to work at Delaware. Large Cap Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized Annualized Annualized One Year 3 Year 5 Year Inception Return Return Return to Date - -------------------------------------------------------------------------------- Large Cap Fund, Class A 9.02% 5.51% (2.31)% 7.93% - -------------------------------------------------------------------------------- Large Cap Fund, Class T 7.67% N/A N/A 14.05% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Large Cap Fund, Class A, versus the Russell 1000 Index Large Cap Fund, Russell 1000 Class A Index 6/30/96 $100,000 $100,000 5/31/97 $128,117 $126,975 5/31/98 $170,856 $165,969 5/31/99 $204,003 $199,677 5/31/00 $222,567 $223,559 5/31/01 $196,883 $199,481 5/31/02 $168,610 $172,870 5/31/03 $153,469 $159,542 5/31/04 $181,661 $189,712 5/31/05 $198,047 $207,582 1 For the period ended May 31, 2005. Past performance is no indication of future performance. The performance of Class T shares may be lower than the performance of Class A shares because of different distribution fees paid by Class T shareholders. Class A shares were offered beginning 6/14/96 and Class T shares were offered beginning 12/13/02. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 1 - -------------------------------------------------------------------------------- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Large Cap Disciplined Equity Fund Objective The Large Cap Disciplined Equity Fund (the "Fund") seeks to provide capital appreciation. Strategy The Fund seeks to exceed the total return of the S&P 500 Index, with a similar level of volatility, by investing primarily in a portfolio of common stocks included in the S&P 500 Index, as well as other equity securities. The Fund uses a multi-manager approach, with four sub-advisers offering different investment philosophies to manage portions of the Fund's portfolio. The sub-advisers rely on rigorous application of proprietary stock analysis, rather than traditional fundamental analysis, to select securities. Analysis The U.S. equity market advanced more than 9% for the fiscal year ended May 31, 2005, with nearly all of the gain coming during a strong market rally in the fourth quarter of 2004. The equity markets stumbled in the summer of 2004 as an inventory glut in the semi-conductor area dragged down the technology sector and weighed on the market. After the uncertainty of the U.S. presidential election passed, the market re-focused on corporations' healthy earnings and sent stocks sharply higher. Two big pharmaceutical companies, Merck and Pfizer, saw their stocks decline as their COX-2 inhibitor drugs were linked to heart problems. Energy and commodity prices continued their steady rise through the first quarter, which sent stocks in those sectors higher as well. Home builders also benefited as long-term interest rates and 30-year mortgage rates remained at attractive levels, even though the Federal Reserve raised short-term interest rates 200 basis points over the fiscal year. For the fiscal year, the energy and utility sectors led the market, advancing more than 35%, while information technology was the worst performing sector, registering a decline of about 1%. The Fund outperformed the large cap market for the fiscal year ended May 31, 2005. The Fund benefited from an overweight position in energy and healthcare equipment & service, but was hurt by an underweight to real estate and diversified financials throughout the fiscal year. All four managers in the Fund outperformed the benchmark significantly. The best performing manager was Analytic Investors, Inc., driven by specific positions in the retailing, utilities and media industries. The other three managers also benefited from positive stock selection. Large Cap Disciplined Equity Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized One Year Inception Return to Date - -------------------------------------------------------------------------------- Large Cap Disciplined Equity Fund, Class A 10.26% 13.45% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Large Cap Disciplined Equity Fund, Class A, versus the S&P 500 Composite Index Large Cap Disciplined Equity S&P 500 Fund, Class A Index 8/31/03 $100,000 $100,000 5/31/04 $112,560 $112,619 5/31/05 $124,109 $121,899 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 8/28/03. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- 2 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Large Cap Index Fund Objective The Large Cap Index Fund (the "Fund") seeks to provide investment results that correspond to the aggregate price and dividend performance of the securities in the Russell 1000 Index (the "Index"). Strategy The Fund attempts to match the performance of the widely followed Index by replicating its composition in full. 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. Analysis The U.S. equity market advanced more than 9% for the fiscal year ending May 31, 2005, with nearly all of the gain coming during a strong market rally in the fourth quarter of 2004. The equity markets stumbled in the summer of 2004 as an inventory glut in the semi- conductor area dragged down the technology sector and weighed on the market. After the uncertainty of the U.S. presidential election passed, the market re-focused on corporations' healthy earnings and sent stocks sharply higher. Two big pharmaceutical companies, Merck and Pfizer, saw their stocks decline as their COX-2 inhibitor drugs were linked to heart problems. Energy and commodity prices continued their steady rise through the first quarter, which sent stocks in those sectors higher as well. Home builders also benefited as long-term interest rates and 30-year mortgage rates remained at attractive levels even though the Federal Reserve raised short-term interest rates 200 basis points over the fiscal year. For the fiscal year, the energy and utility sectors led the market, advancing more than 35%, while information technology was the worst performing sector, registering a decline of about 1%. Fund performance was in line with expectations, closely tracking the broad market index for the fiscal year ended May 31, 2005. Large Cap Index Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized Annualized One Year Three Year Inception Return Return to Date - -------------------------------------------------------------------------------- Large Cap Index Fund, Class A 9.29% 6.15% 3.57% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Large Cap Index Fund, Class A, versus the Russell 1000 Index Large Cap Index Fund, Russell 1000 Class A Index 4/30/02 $100,000 $100,000 5/31/02 $ 99,050 $ 99,120 5/31/03 $ 91,334 $ 91,478 5/31/04 $108,423 $108,776 5/31/05 $118,495 $119,023 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 4/01/02. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 3 - -------------------------------------------------------------------------------- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Small Cap Fund Objective The Small Cap Fund (the "Fund") seeks to provide capital appreciation. Strategy The Fund's investment philosophy is to add value through stock selection while minimizing risk in the form of capitalization, valuation and economic sector exposures. The Fund is sub-advised by 11 investment managers, who are responsible for the stock selection of the investment portfolio. Each sub-adviser employs a unique investment process that allows the Fund to benefit from a variety of sub-styles in the small cap area of the market. The various sub-styles are: real estate specialty, deep-value, contrarian value, private business value, relative value, business momentum, GARP (growth at a reasonable price), contrarian growth, relative growth, earnings momentum, earnings growth and disciplined core. Analysis Equity markets' returns, including those of the domestic small cap market, did not reach the heights seen in 2003 and early 2004, but still made for a solid year. Stocks with conservative valuations continued to outperform the broad market. The energy sector's success due to rising energy prices buoyed the market, though returns have significantly slowed in 2005. A similar story arose with regard to financials such as banks, insurance, and real estate, which outperformed the broad market for the year but whose returns have slowed due to possible overvaluation and worries of continued Fed tightening. Although information technology was the worst performing sector over the past twelve months, it was the top performer in May, and will add to returns should the expected second stage of economic growth -- which would boost business spending in technology -- come to fruition. The Fund has performed well for the fiscal year ended May 31, 2005. Both stock selection and industry positioning contributed to the return. An overweight to the outperforming energy sector, due mostly to Artisan Partners Limited Partnership, provided an advantage to the Fund. Stock selection in financials also considerably added to performance. The Fund both was overweight the underperforming information technology sector and had negative stock selection in this sector, which did somewhat diminish the Fund's return. However, the Fund is poised to capitalize on the gains expected in technology going forward. Wellington Management Company, LLP and McKinley Capital Management Inc. posted strong returns for the Fund due to stock selection in the energy and health care sectors, respectively. They both were able to add significant value in technology as well. However, their performance was mitigated by Mazama Capital Management Inc. and David J. Greene and Company, LLC which were hurt by securities in the information technology sector. The Fund is positioned to capture the opportunities in the small cap area of the market under a variety of market conditions. To this end, the Fund targets a style-neutral position relative to the Russell 2000 Index, in order to control unnecessary risks and put the focus on stock selection by the specialist sub-advisers. Small Cap Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized Annualized Annualized One Year 3 Year 5 Year Inception Return Return Return to Date - -------------------------------------------------------------------------------- Small Cap Fund, Class A 9.81% 10.47% 7.22% 9.39% - -------------------------------------------------------------------------------- Small Cap Fund, Class T 9.14% N/A N/A 20.09% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Small Cap Fund, Class A, versus the Russell 2000 Index Small Cap Fund, Russell 2000 Class A Index 6/30/96 $100,000 $100,000 5/31/97 $111,993 $111,558 5/31/98 $141,873 $135,253 5/31/99 $133,630 $131,615 5/31/00 $161,773 $144,658 5/31/01 $175,345 $152,889 5/31/02 $170,103 $152,125 5/31/03 $158,485 $139,681 5/31/04 $208,819 $181,990 5/31/05 $229,304 $199,862 1 For the period ended May 31, 2005. Past performance is no indication of future performance. The performance of Class T shares may be lower than the performance of Class A shares because of different distribution fees paid by Class T shareholders. Class A shares were offered beginning 6/14/96 and Class T shares were offered beginning 11/26/02. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- 4 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Small/Mid Cap Equity Fund Objective The Small/Mid Cap Fund (the "Fund") seeks to provide long-term capital appreciation. Strategy The Fund's investment philosophy is to add value through stock selection while minimizing risk in the form of capitalization, valuation and economic sector exposures. The Fund is sub-advised by nine investment managers who are responsible for the stock selection of the investment portfolio. Each sub-adviser employs a unique investment process that allows the Fund to benefit from a variety of sub-styles in the small-mid cap area of the market. The various sub-styles are: real estate specialty, business momentum, relative growth, opportunistic value, earnings growth, GARP (growth at a reasonable price), contrarian growth, contrarian value and disciplined core. Analysis Equity markets' returns, including those of the domestic small-mid cap market, did not reach the heights seen in 2003 and early 2004, but still made for a solid fiscal year ended May 31, 2005. Stocks with conservative valuations continued to outperform the broad market. The energy sector's success due to rising energy prices buoyed the market, though returns have significantly slowed in 2005. A similar story arose with regard to financials such as insurance and real estate which outperformed the broad market for the period, but whose returns have slowed this calendar year due to possible overvaluation and worries of continued Fed tightening. Although information technology was the worst performing sector over the past twelve months, it was the top performer in May, and will add to returns should the expected second stage of economic growth -- which would boost business spending in technology -- come to fruition. The Fund has performed well for the fiscal year ended May 31, 2005. Superior stock selection -- especially in the financials and consumer discretionary sectors -- accounted for a sizeable portion of the return. Both an overweight to, and stock selection skill in, the health care sector also significantly benefited the Fund. Conversely, being underweight the outperforming utilities sector and experiencing poor stock selection in industrials somewhat diminished the Fund's return. However, the Fund is poised to capitalize on the gains expected in technology going forward. Six of the nine managers in the Fund outperformed for the period. Integrity Asset Management, LLC, Martingale Asset Management, L.P. and Wellington Management Company, LLP boosted returns with positive stock selection in health care and financials, while Blackrock Advisors, Inc. prevailed in the industrials and information technology spaces. Security Capital Research and Management Incorporated, which specializes in real estate, also added to the Fund's performance. On the other side of the coin, weak stock selection in industrials hurt Lee Munder Investments, Ltd's and LSV Asset Management's returns. The Fund is positioned to capture the opportunities in the small-mid cap area of the market under a variety of market conditions. To this end, the Fund targets a style-neutral position relative to the Russell 2500 Index, in order to control unnecessary risks and put the focus on stock selection by the specialist sub-advisers. Small/Mid Cap Equity Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized One Year Inception Return to Date - -------------------------------------------------------------------------------- Small/Mid Cap Equity Fund, Class A 13.38% 14.26% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Small/Mid Cap Equity Fund, Class A, versus the Russell 2500 Index Small/Mid Cap Equity Fund, Russell 2500 Class A Index 12/31/03 $100,000 $100,000 5/31/04 $102,767 $102,862 5/31/05 $116,517 $116,049 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 12/15/03. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 5 - -------------------------------------------------------------------------------- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Core Fixed Income Fund Objective The Core Fixed Income Fund (the "Fund") seeks to provide current income consistent with the preservation of capital. Strategy The Fund's investment strategy focuses on sector rotation, both among and within sectors, and issue selection. Risk is principally controlled by explicitly limiting fund interest rate exposure relative to the Lehman Aggregate Bond Index. The Fund's sub-advisers focus on four key areas in determining portfolio structure: duration weighting, term structure, sector allocation, and issue selection. While the duration and term structure decision underlie the implementation process, the sub-advisers primarily concentrate on sector and issue selection to add value. In addition, the sub-advisers may use derivatives for tactical hedging purposes and to implement portfolio strategies more efficiently. Analysis The fiscal year ended May 31, 2005 proved to be a challenging, yet rewarding, environment for fixed income investors. Fairly robust economic growth prompted interest rate expectations to move higher and the Federal Reserve delivered, as they increased the Federal Funds rate by 25 basis points at each of their eight meetings, for a total of 200 basis points. The move to higher interest rates on short-maturity securities met with resistance on ten and thirty year maturities as strong investor demand and nervousness surrounding inflation caused longer-term interest rates to decline. These shifts in interest rates caused the yield curve to flatten by over 2% as the yield on the two-year Treasury increased 0.98% while the yield on the 30-year U.S. Treasury declined 1.08%. While interest rates seesawed throughout the period based on varying bullish and bearish economic statistics, credit spreads followed a one-way trajectory lower until March 2005 as corporations continued to de-lever their balance sheets and supply remained contained. The springtime spurt of widening corporate spreads, stimulated by the downgrade of General Motors to below investment grade, created quite a stir but was quickly assimilated by the market. The Asset-Backed Security (ABS) and Commercial Mortgage-Backed Securities (CMBS) sectors of the market also turned in a solid performance, generating 99 and 122 basis points of excess return, respectively. Despite the intra-period volatility of interest rates, the mortgage sector performed well, posting 171 basis points of excess return. The investment-grade fixed income market returned 6.82% for the fiscal year, as measured by the Lehman Aggregate Bond Index. The Fund posted robust performance for the same period, due primarily to yield curve positioning. An overweight to the credit sector, specifically in the lower rated investment grade area, additionally contributed to performance. On top of that, the portfolio's issue selection in corporate bonds and exposure to the ABS and CMBS structured sectors also enhanced returns. An underweight to the mortgage sector detracted from performance even though the security selection emphasized issues that were less sensitive to interest rate movements. Finally, the Fund enjoyed the incremental return and diversification benefits from TIPS (Treasury Inflation Protection Securities) as higher commodity prices and the perceived increase in inflation caused real yields to drop considerably and outperform nominal Treasuries. Core Fixed Income Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized Annualized Annualized One Year 3 Year 5 Year Inception Return Return Return to Date - -------------------------------------------------------------------------------- Core Fixed Income Fund, Class A 6.77% 6.25% 7.78% 7.22% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Core Fixed Income Fund, Class A, versus the Lehman Aggregate Bond Index Core Fixed Lehman Income Fund, Aggregate Class A Bond Index 6/30/96 $100,000 $100,000 5/31/97 $106,847 $106,886 5/31/98 $119,242 $118,557 5/31/99 $124,190 $123,703 5/31/00 $126,761 $126,313 5/31/01 $144,406 $142,873 5/31/02 $153,691 $154,460 5/31/03 $170,751 $172,346 5/31/04 $172,680 $171,588 5/31/05 $184,371 $183,307 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 6/14/96. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- 6 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Long Duration Fund Objective The Long Duration Fund (the "Fund") seeks to duplicate the return characteristics similar to those of high-quality corporate bonds, with a duration range of 10-13 years. Strategy The Fund's investment strategy is designed to aid investors, especially corporate pension plans, with asset/liability management in order to reduce funding status volatility caused by changes in interest rates. The Fund seeks to duplicate the risk and return characteristics of a long fixed income securities portfolio (approximate duration of 10 to 13 years) by using cash bonds and derivative securities, including interest rate swap agreements and Treasury futures contracts, for the purpose of managing the overall duration of the Fund. Additionally, the Fund will invest in other fixed income securities, including U.S. Agency, corporate and structured securities, to produce incremental return. Analysis The fiscal year ended May 31, 2005 proved to be a challenging environment for fixed income investors. Fairly robust economic growth prompted interest rate expectations to move higher and the Federal Reserve delivered, as they increased the Federal Funds rate by 25 basis points at each of their eight meetings, for a total of 200 basis points. The move to higher interest rates on short-maturity securities met with resistance on ten and thirty year maturities as strong investor demand and nervousness surrounding inflation caused longer-term interest rates to decline. These shifts in interest rates caused the yield curve to flatten by over 2.00% as the yield on the two-year Treasury increased 0.98% while the yield on the 30-year U.S. Treasury declined over 1.00%. While interest rates seesawed throughout the period based on varying bullish and bearish economic statistics, swap spreads, which essentially replicate high-quality fixed income spreads, ground marginally tighter. Meanwhile, credit spreads followed a one-way trajectory lower until March 2005, as corporations continued to deliver their balance sheets and supply remained contained. However, the springtime spurt of widening corporate spreads, stimulated by the downgrade of General Motors to below investment grade, proved to be disruptive, especially for the higher-beta credits at the long end of the market. Other spread sectors, including the Asset-Backed Security (ABS) and Commercial Mortgage-Backed Securities (CMBS) sectors of the market, turned in a solid performance, generating 99 and 122 basis points of excess return, respectively. Despite the intra-period volatility of interest rates, the mortgage sector also performed well, posting 171 basis points of excess return. The Lehman 15 Year Bellweather Swap Index returned 15.92% for the fiscal year. The Fund underperformed this benchmark due to a combination of factors. The Fund maintained a slightly shorter-than-benchmark duration for the year with the expectation of gradually rising interest rates. While short term rates increased, long rates declined. Additionally, the Fund was positioned to benefit from widening swap spreads, but spreads instead tightened. Finally, corporate bond positioning, especially in the automotive sector, detracted from performance as well. Long Duration Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized One Year Inception Return to Date - -------------------------------------------------------------------------------- Long Duration Fund, Class A 15.26% 11.84% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Long Duration Fund, Class A, versus the Lehman Long U.S. Treasury Index and Lehman 15 Year Bellweather Swap Index2 Long Duration Lehman Long Lehman 15 Year Fund Fund, U.S. Treasury Bellweather Class A Index Swap Index2 4/30/04 $100,000 $100,000 $100,000 5/31/04 $ 99,140 $ 99,510 $ 99,160 5/31/05 $114,269 $115,561 $114,946 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 4/21/04. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. 2 The Lehman 15 Year Bellweather Swap Index is the most appropriate measure of the Fund's performance. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 7 - -------------------------------------------------------------------------------- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FUND PERFORMANCE SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Extended Duration Fund Objective The Extended Duration Fund (the "Fund") seeks to duplicate return characteristics similar to those of high-quality corporate bonds, with a duration range of 23-26 years. Strategy The Fund's investment strategy is designed to aid investors, especially corporate pension plans, with asset/liability management in order to reduce funding status volatility caused by changes in interest rates. The Fund seeks to duplicate the risk and return characteristics of a long fixed income securities portfolio (approximate duration of 23 to 26 years) by using cash bonds and derivative securities, including interest rate swap agreements and Treasury futures contracts, for the purpose of managing the overall duration of the Fund. Additionally, the Fund will invest in other fixed income securities, including U.S. Agency, corporate and structured securities, to produce incremental return. Analysis The fiscal year ended May 31, 2005 proved to be a challenging environment for fixed income investors. Fairly robust economic growth prompted interest rate expectations to move higher and the Federal Reserve delivered, as they increased the Federal Funds rate by 25 basis points at each of their eight meetings, for a total of 200 basis points. The move to higher interest rates on short maturity securities met with resistance on ten and thirty year maturities as strong investor demand and nervousness surrounding inflation caused longer term interest rates to decline. These shifts in interest rates caused the yield curve to flatten by over 2.00% as the yield on the two year Treasury increased 0.98% while the yield on the 30 year U.S. Treasury declined over 1.00%. While interest rates seesawed throughout the period based on varying bullish and bearish economic statistics, swap spreads, which essentially replicate high quality fixed income spreads, ground marginally tighter. Meanwhile credit spreads followed a one-way trajectory lower until March 2005, as corporations continued to de-lever their balance sheets and supply remained contained. However, the springtime spurt of widening corporate spreads, stimulated by the downgrade of General Motors to below investment grade, proved to be disruptive, especially for the higher beta credits at the long end of the market. Other spread sectors, including the Asset-Backed Security (ABS) and Commercial Mortgage-Backed Securities (CMBS) sectors of the market, turned in a solid performance, generating 99 and 122 basis points of excess return, respectively. Despite the intra- period volatility of interest rates, the mortgage sector also performed well, posting 171 basis points of excess return. The Hybrid benchmark, (2xLehman 20 Year Bellweather Swap Index)-Lehman 3 Month Bellweather Swap Index, returned 37.11% for the fiscal year. The Fund underperformed this benchmark due to a combination of factors. The Fund maintained a slightly shorter-than-benchmark duration for the year with the expectation of gradually rising interest rates. While short term rates increased, long rates declined. Additionally, the Fund was positioned to benefit from widening swap spreads, but spreads instead tightened. Finally, corporate bond positioning, especially in the automotive sector, detracted from performance as well. Extended Duration Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized One Year Inception Return to Date - -------------------------------------------------------------------------------- Extended Duration Fund, Class A 35.74% 27.12% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the Extended Duration Fund, Class A, versus Lehman 20 Year U.S. Treasury Strip Index and a Hybrid (2xLehman 20 Year Bellweather Swap Index)-Lehman 3 Month Bellweather Swap Index2 Hybrid (2xLehman 20 Year Bellweather Swap Index)-Lehman Extended Lehman 20 Year 3 Month Duration Fund, U.S. Treasury Bellweather Class A Strip Index Swap Index2 4/30/04 $100,000 $100,000 $100,000 5/31/04 $ 97,610 $ 99,820 $ 98,310 5/31/05 $132,496 $134,687 $134,793 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 4/21/04. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. 2 The Hybrid (2xLehman 20 Year Bellweather Swap Index)-Lehman 3 Month Bellweather Swap Index is the most appropriate measure of the Fund's performance. - -------------------------------------------------------------------------------- 8 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- International Equity Fund Objective The International Equity Fund (the "Fund") seeks to provide capital appreciation. Strategy The Fund is diversified across 34 markets and includes commitments to large-cap and small-cap shares. Exposure is also maintained in growth and value styles of active management. The Fund employs multiple sub-advisers, each providing unique regional or style management specialties. Allocations to the sub-advisers are carefully managed to ensure proper geographic and market exposure. Emphasis is placed on active security selection as the principal source of value added as opposed to active country allocation. The Fund does not hedge foreign currency exposure. Analysis International equity markets posted strong absolute returns for the fiscal year ended May 31, 2005. There was significant dispersion in returns among sectors, with the energy, materials and utilities sectors leading the way by returning over 20% during the period. In contrast, the information technology sector lagged the broader market and returned a modestly negative 0.1% during the same period. There was also a wide level of dispersion on a country level. Several continental European countries, such as Austria and Norway, returned 30% for the period. Japan had a disappointing year as a follow-up to strong prior year performance; concerns arose around macroeconomic reports despite continuing improvement in the microeconomic environment. The Fund modestly underperformed the MSCI EAFE benchmark by 0.3% for the fiscal year ended May 31, 2005. The Fund enhanced relative returns via strong stock selection in the telecommunications sector. Strong stock selection on a sector basis was muted, however, by underperformance due to relative sector weightings versus the MSCI EAFE Index. For instance, both the overweight to information technology and the underweight to utilities were detractors for the period. On a country level, the Fund slightly underperformed the benchmark as a result of positioning. More specifically, the Fund lost relative performance because of the slight overweight it maintains to Japan and its underweight to the strong- performing Australian market. Stock selection within the United Kingdom was strong during this period, however, helping to offset some of the negative positioning losses in the portfolio. International Equity Fund AVERAGE ANNUAL TOTAL RETURN1 - -------------------------------------------------------------------------------- Annualized Annualized Annualized One Year 3 Year 5 Year Inception Return Return Return to Date - -------------------------------------------------------------------------------- International Equity Fund, Class A 13.73% 8.63% (1.14)% 4.42% - -------------------------------------------------------------------------------- [GRAPHIC OMITTED] PLOT POINTS FOR EDGAR PURPOSES Comparison of Change in the Value of a $100,000 Investment in the International Equity Fund, Class A, versus the Morgan Stanley MSCI EAFE Index International Morgan Stanley Equity Fund, MSCI EAFE Class A Index 6/30/96 $100,000 $100,000 5/31/97 $106,802 $106,950 5/31/98 $117,909 $118,833 5/31/99 $126,080 $124,014 5/31/00 $154,852 $145,270 5/31/01 $126,653 $120,240 5/31/02 $114,077 $108,697 5/31/03 $ 97,615 $ 95,327 5/31/04 $128,589 $126,461 5/31/05 $146,244 $144,949 1 For the period ended May 31, 2005. Past performance is no indication of future performance. Fund shares were offered beginning 6/14/96. Returns shown do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The returns for certain periods reflect fee waivers and/or reimbursements in effect for that period; absent fee waivers and reimbursements, performance would have been lower. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 9 - -------------------------------------------------------------------------------- SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Report of Independent Registered Public Accounting Firm To the Board of Trustees and Shareholders of SEI Institutional Investments Trust In our opinion, the accompanying statements of assets and liabilities, including the schedules of investments of the Core Fixed Income Fund, Long Duration Fund and Extended Duration Fund and the statements of net assets of the Large Cap Fund, Large Cap Disciplined Equity Fund, Large Cap Index Fund, Small Cap Fund, Small/Mid Cap Equity Fund, International Equity Fund and World Equity Ex-US Fund (collectively, the "Funds" comprising the SEI Institutional Investments Trust, hereafter referred to as the "Trust"), and the related statements of operations and of changes in net assets and the financial highlights present fairly, in all material respects, the financial position of each of the Funds at May 31, 2005, and the results of each of their operations, the changes in each of their net assets and financial highlights for each of the periods indicated, in conformity with accounting principles generally accepted in the United States of America. These financial statements and financial highlights (hereafter referred to as "financial statements") are the responsibility of the Trust's management; our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these financial statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits, which included confirmation of securities at May 31, 2005 by correspondence with the custodians and brokers, provide a reasonable basis for our opinion. PricewaterhouseCoopers LLP Philadelphia, Pennsylvania July 27, 2005 - -------------------------------------------------------------------------------- 10 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- This page intentionally left blank. - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++ 23.3% Financials 14.6% Information Technology 13.8% Consumer Discretionary 10.7% Health Care 9.4% Industrials 7.9% Energy 7.5% Consumer Staples 3.0% Short-Term Investments 2.8% Telecommunication Services 2.6% Materials 2.2% Utilities 1.8% Asset-Backed Securities 0.3% Certificates of Deposit 0.1% U.S. Treasury Obligations 0.0% Warrants ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 98.3% CONSUMER DISCRETIONARY -- 15.0% Abercrombie & Fitch, Cl A 17,600 $ 1,009 Aeropostale* 16,000 436 American Eagle Outfitters 53,000 1,500 Autoliv 74,633 3,464 Autonation (B)* 47,500 950 Barnes & Noble* 23,900 905 Bed Bath & Beyond* 104,900 4,264 BJ's Wholesale Club* 16,900 510 BorgWarner 22,600 1,208 Carnival 96,000 5,078 Centex (B) 32,074 2,100 Clear Channel Communications (B) 83,280 2,434 Coach* 47,000 1,365 Comcast, Cl A* 141,780 4,565 Comcast, Special Cl A (B)* 54,996 1,740 Dana 45,400 615 Darden Restaurants 83,900 2,725 Delphi (B) 108,900 474 Dillard's, Cl A 8,200 196 DR Horton 83,529 2,888 Eastman Kodak (B) 54,000 1,419 eBay* 639,416 24,304 EchoStar Communications, Cl A* 39,801 1,163 Federated Department Stores (B) 47,883 3,230 Ford Motor 212,200 2,118 Fortune Brands 10,000 865 Gannett 28,469 2,120 General Motors (B) 72,161 2,275 Goodyear Tire & Rubber (B)* 59,400 855 Harrah's Entertainment (B) 51,834 3,722 Hasbro 41,300 834 Home Depot 168,698 6,638 International Game Technology 270,000 7,609 Interpublic Group (B)* 37,300 460 JC Penney 39,100 1,946 Johnson Controls 17,600 997 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- KB Home 29,800 $ 2,013 Kohl's* 186,296 9,071 Lamar Advertising, Cl A* 37,021 1,548 Lennar, Cl A 10,500 609 Liberty Media International, Cl B (B)* 210,000 8,801 Limited Brands 127,900 2,631 Lowe's 194,715 11,140 Magna International, Cl A 4,600 313 Marriott International, Cl A (B) 74,967 5,063 Mattel (B) 63,700 1,158 Maytag (B) 25,200 368 McDonald's 514,200 15,909 McGraw-Hill 157,016 6,855 McLeodUSA, Cl A (B) (F) (H)* 92,300 -- MGM Mirage* 180,000 6,856 Nike, Cl B (B) 39,200 3,222 Nordstrom 7,800 476 NVR (B)* 1,100 835 OfficeMax 8,540 259 Omnicom Group 46,353 3,796 Polaris Industries (B) 17,300 908 Pulte Homes 9,500 726 Ryland Group (B) 13,600 932 Sherwin-Williams 41,312 1,836 Standard-Pacific 11,600 929 Stanley Works 45,019 2,008 Staples 450,000 9,689 Starwood Hotels & Resorts Worldwide 27,801 1,556 Station Casinos 22,375 1,457 Target (B) 179,500 9,639 Time Warner* 598,337 10,411 Toll Brothers (B)* 10,300 954 Univision Communications, Cl A (B)* 156,925 4,176 Valassis Communications (B)* 44,086 1,529 VF 39,600 2,235 Viacom, Cl B 319,900 10,969 Walt Disney 328,326 9,009 Wendy's International 34,900 1,575 Whirlpool (B) 25,800 1,775 XM Satellite Radio Holdings, Cl A (B)* 308,900 9,919 ---------- 262,136 ---------- CONSUMER STAPLES -- 8.1% Albertson's (B) 75,000 1,574 Altria Group 268,671 18,039 Anheuser-Busch 39,900 1,869 Archer-Daniels-Midland 179,900 3,571 Avon Products 82,262 3,269 Coca-Cola 13,500 602 Colgate-Palmolive 86,987 4,347 ConAgra Foods (B) 35,300 923 Costco Wholesale (B) 38,200 1,735 CVS 36,600 2,007 - -------------------------------------------------------------------------------- 12 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Dean Foods* 23,600 $ 920 Energizer Holdings* 33,600 2,113 Estee Lauder, Cl A 75,600 2,955 General Mills 60,600 3,000 Gillette 348,303 18,369 Kimberly-Clark 49,900 3,210 Kroger* 120,100 2,014 Molson Coors Brewing, Cl B 11,900 696 Pepsi Bottling Group 66,300 1,881 PepsiAmericas 39,500 957 PepsiCo 262,098 14,746 Procter & Gamble (B) 194,410 10,722 Reynolds American (B) 31,500 2,612 Rite Aid (B)* 52,600 208 Safeway* 92,272 2,031 Sara Lee 60,200 1,221 Smithfield Foods* 29,900 892 Supervalu 62,000 2,031 Tyson Foods, Cl A 60,000 1,108 UST (B) 28,500 1,270 Wal-Mart Stores 363,686 17,177 Walgreen 239,000 10,836 WM Wrigley Jr 54,749 3,738 ---------- 142,643 ---------- ENERGY -- 8.6% Amerada Hess (B) 34,400 3,194 Anadarko Petroleum 33,100 2,506 Burlington Resources 60,000 3,041 ChevronTexaco 406,836 21,880 ConocoPhillips 250,813 27,048 Devon Energy 34,800 1,597 Diamond Offshore Drilling (B) 11,200 529 El Paso 92,431 956 Exxon Mobil 1,013,137 56,938 Halliburton 96,000 4,103 Marathon Oil 60,012 2,910 Nabors Industries (B)* 4,700 259 Noble (B) 27,500 1,557 Noble Energy 8,287 616 NRG Energy* 24,600 879 Occidental Petroleum 39,641 2,898 PetroKazakhstan, Cl A 29,000 809 Pride International* 16,300 368 Schlumberger 120,415 8,233 Sunoco 10,300 1,056 Talisman Energy 27,600 918 Unit* 11,000 429 Unocal 46,023 2,623 Valero Energy 40,900 2,807 Western Gas Resources 16,600 532 Williams 102,000 1,878 ---------- 150,564 ---------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- FINANCIALS -- 20.5% A.G. Edwards 57,600 $ 2,379 ACE 3,600 156 Aflac 8,700 361 Allstate 101,049 5,881 American Express 84,200 4,534 American International Group 256,727 14,261 AmSouth Bancorp (B) 63,770 1,700 Astoria Financial 47,511 1,308 Bank of America 759,518 35,181 Bank of New York 17,975 518 BB&T (B) 27,433 1,096 Bear Stearns (B) 33,300 3,298 CBL & Associates Properties+ 7,000 570 Charles Schwab 970,941 11,010 Chicago Mercantile Exchange Holdings 33,000 7,134 Chubb (B) 35,616 3,000 Cincinnati Financial 19,635 775 CIT Group 26,400 1,120 Citigroup 734,978 34,625 Comerica 75,291 4,207 Commerce Bancorp (B) 30,400 844 Countrywide Financial 114,400 4,252 Crescent Real Estate Equity EQT+ 22,300 410 Downey Financial 12,100 908 E*Trade Financial* 36,600 452 Endurance Specialty Holdings 24,300 886 Equity Office Properties Trust+ 47,700 1,550 Equity Residential+ (B) 46,300 1,662 Fannie Mae 71,774 4,252 Fidelity National Financial 36,934 1,329 First American 60,815 2,354 First Horizon National (B) 26,669 1,126 Franklin Resources 93,800 6,767 Freddie Mac 143,194 9,313 Friedman Billings Ramsey Group, Cl A+ (B) 103,300 1,348 General Growth Properties+ (B) 19,700 767 Golden West Financial (B) 21,220 1,329 Goldman Sachs Group 184,458 17,985 Hartford Financial Services Group (B) 60,275 4,508 Huntington Bancshares 52,473 1,224 Independence Community Bank 41,953 1,572 IndyMac Bancorp 44,300 1,823 IPC Holdings 2,100 80 Jefferson-Pilot 62,683 3,159 JPMorgan Chase 433,627 15,502 Keycorp 143,218 4,692 Legg Mason 65,450 5,379 Lehman Brothers Holdings 93,561 8,626 Leucadia National 22,300 890 Lincoln National 71,700 3,265 Loews 34,800 2,620 Marshall & Ilsley 21,600 940 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 13 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- MBIA (B) 49,261 $ 2,755 MBNA 266,933 5,630 Merrill Lynch 109,762 5,956 Metlife 134,200 5,985 Mills+ (B) 15,000 862 Moody's 219,528 9,499 Morgan Stanley 104,127 5,098 National City 199,896 6,908 Nationwide Financial Services, Cl A 23,300 890 North Fork Bancorporation 38,400 1,047 Old Republic International 27,000 671 PMI Group 25,500 964 PNC Financial Services Group 44,586 2,437 Popular 46,204 1,088 Principal Financial Group 57,900 2,310 Progressive 11,700 1,124 Providian Financial (B)* 63,700 1,135 Prudential Financial 25,200 1,595 Radian Group 19,300 885 Rayonier+ 7,900 415 Regions Financial (B) 56,566 1,905 Safeco 42,100 2,265 St. Joe (B) 17,900 1,412 St. Paul Travelers 61,116 2,315 Stancorp Financial Group 14,800 1,108 State Street 21,265 1,021 SunTrust Banks 78,966 5,813 UnionBanCal 25,200 1,582 UnumProvident (B) 47,850 879 US Bancorp (B) 256,406 7,520 Wachovia 293,860 14,913 Washington Mutual 123,324 5,093 Webster Financial 32,991 1,547 Wells Fargo 120,109 7,256 Willis Group Holdings (B) 31,724 1,087 XL Capital, Cl A 10,158 765 Zions Bancorporation 16,100 1,141 ---------- 359,804 ---------- HEALTH CARE -- 11.7% Abbott Laboratories 33,500 1,616 Aetna 16,900 1,318 Alcon 7,108 727 Allergan 120,000 9,277 AmerisourceBergen (B) 13,100 846 Amgen* 282,375 17,671 Applera--Applied Biosystems Group (B) 87,349 1,870 Bausch & Lomb 13,600 1,062 Boston Scientific* 154,700 4,191 Bristol-Myers Squibb 143,645 3,643 C.R. Bard 20,000 1,365 Cardinal Health 12,800 742 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Caremark Rx* 209,511 $ 9,357 Cigna 27,300 2,655 Cooper 7,815 516 Eli Lilly 154,322 8,997 Genentech (B)* 384,540 30,475 Genzyme* 44,300 2,764 HCA 32,462 1,753 Health Management Associates, Cl A 48,700 1,228 Humana* 35,900 1,305 Invitrogen (B)* 14,400 1,142 Johnson & Johnson 175,862 11,800 Kinetic Concepts* 22,000 1,413 Laboratory of America Holdings (B)* 42,000 2,035 McKesson (B) 7,600 306 Medco Health Solutions* 46,100 2,305 Medtronic 449,442 24,158 Merck 196,153 6,363 PerkinElmer 100,783 1,928 Pfizer 333,430 9,303 Sanofi-Aventis ADR 29,000 1,305 St. Jude Medical* 7,700 309 Stryker 69,500 3,381 UnitedHealth Group 165,000 8,016 Universal Health Services, Cl B 15,300 894 WellPoint* 83,054 11,046 Wyeth 120,409 5,222 Zimmer Holdings* 132,200 10,124 ---------- 204,428 ---------- INDUSTRIALS -- 10.2% 3M 81,688 6,261 Apollo Group, Cl A (B)* 37,200 2,920 Boeing 16,100 1,029 Burlington Northern Santa Fe 141,966 7,016 Canadian Pacific Railway 24,500 905 Caterpillar 64,854 6,103 Cendant 402,751 8,542 Cintas (B) 122,150 4,931 Cooper Industries, Cl A 21,200 1,462 CSX 29,649 1,233 Cummins 23,500 1,597 Deere 16,700 1,105 Deluxe 34,800 1,406 Eaton 53,324 3,191 Emerson Electric 19,379 1,288 Expeditors International Washington 150,000 7,647 Fastenal (B) 61,123 3,552 GATX 23,300 778 General Dynamics 26,800 2,894 General Electric 1,360,600 49,635 Goodrich 32,145 1,346 Harsco 17,200 998 HNI 8,000 413 - -------------------------------------------------------------------------------- 14 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Honeywell International 49,828 $ 1,805 Hubbell, Cl B (B) 14,450 657 Illinois Tool Works 37,700 3,183 L-3 Communications Holdings 34,000 2,406 Lockheed Martin (B) 80,700 5,237 Manpower 15,500 617 Masco 68,600 2,197 Navistar International (B)* 22,500 686 Norfolk Southern 63,182 2,017 Northrop Grumman 129,300 7,205 Paccar 14,400 1,019 Parker Hannifin 5,721 345 Raytheon 34,200 1,339 Rockwell Collins 38,000 1,877 RR Donnelley & Sons 46,816 1,557 Ryder System 6,200 228 Teekay Shipping (B) 26,200 1,113 Textron 30,862 2,385 Tyco International 76,300 2,207 United Parcel Service, Cl B 156,241 11,507 United Technologies 48,000 5,122 Weight Watchers International (B)* 163,000 7,930 Yellow Roadway (B)* 14,100 744 ---------- 179,635 ---------- INFORMATION TECHNOLOGY -- 15.9% Activision* 64,000 1,009 Adobe Systems (B) 44,000 1,455 American Tower, Cl A* 48,700 879 Apple Computer* 74,700 2,966 Arrow Electronics* 28,065 784 Autodesk 61,400 2,430 Automatic Data Processing 37,740 1,653 Avnet (B)* 63,500 1,328 Cisco Systems* 751,099 14,556 Cognizant Technology Solutions, Cl A* 31,000 1,488 Computer Sciences (B)* 21,400 991 Comverse Technology (B)* 67,000 1,577 Convergys* 54,400 742 Corning (B)* 114,000 1,788 Dell* 350,570 13,984 Dun & Bradstreet* 15,800 971 Electronic Arts (B)* 68,400 3,594 Electronic Data Systems 23,800 469 EMC* 443,676 6,238 First Data 672,744 25,450 Fiserv* 63,839 2,745 Flextronics International (B)* 46,315 592 Freescale Semiconductor, Cl B* 4,471 90 Google, Cl A (B)* 32,700 9,104 Harris 34,000 977 Hewlett-Packard 429,845 9,676 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Ingram Micro, Cl A* 99,985 $ 1,581 Intel 714,751 19,248 International Business Machines 42,303 3,196 Intuit (B)* 165,000 7,131 Juniper Networks (B)* 150,200 3,851 Lexmark International, Cl A* 70,000 4,791 Linear Technology 216,233 8,102 Lucent Technologies (B)* 94,793 266 Marvell Technology Group (B)* 41,000 1,679 Maxim Integrated Products 62,000 2,443 McAfee* 90,000 2,581 Microsoft 1,387,659 35,802 Motorola 40,500 704 NAVTEQ* 130,000 4,960 NCR* 41,300 1,513 Oracle* 587,600 7,533 Paychex 571,272 16,498 Qualcomm 604,974 22,541 Research In Motion* 55,600 4,605 Reynolds & Reynolds, Cl A 9,100 248 Sabre Holdings, Cl A 41,800 839 SanDisk* 260,000 6,783 Sanmina-SCI* 45,339 233 Seagate Technology 70,000 1,485 Solectron (B)* 150,400 549 Storage Technology* 17,000 549 Sun Microsystems* 36,700 140 Sybase* 43,400 885 Tech Data* 13,516 485 Trimble Navigation (B)* 27,000 1,072 Western Digital* 80,900 1,214 Xerox (B)* 74,500 1,011 Yahoo!* 174,646 6,497 ---------- 278,551 ---------- MATERIALS -- 2.8% Agrium 64,800 1,224 Air Products & Chemicals 12,600 759 Ball 23,600 886 Dow Chemical 149,600 6,775 E.I. Du Pont de Nemours 27,365 1,273 Eastman Chemical 51,253 3,013 Engelhard 32,000 941 Georgia-Pacific 64,049 2,123 International Paper 50,337 1,621 Louisiana-Pacific 94,500 2,379 Lubrizol 49,003 1,929 Lyondell Chemical 61,800 1,467 Martin Marietta Materials (B) 15,183 927 MeadWestvaco 38,200 1,096 Monsanto (B) 25,000 1,425 Nucor (B) 85,100 4,507 Phelps Dodge 11,500 1,005 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 15 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- PPG Industries 46,349 $ 3,031 Praxair 170,000 7,968 Rohm & Haas 33,100 1,544 Sonoco Products 21,583 575 Temple-Inland 6,534 233 United States Steel (B) 25,700 1,022 Weyerhaeuser 21,400 1,373 ---------- 49,096 ---------- TELECOMMUNICATION SERVICES -- 3.1% Alltel (B) 41,400 2,408 AT&T 141,900 2,666 BellSouth 269,417 7,210 CenturyTel 71,400 2,341 Crown Castle International* 112,807 2,006 Nextel Communications, Cl A* 230,000 6,941 Nokia ADR 411,776 6,943 SBC Communications 479,944 11,221 Sprint (B) 72,736 1,723 Verizon Communications 299,571 10,599 ---------- 54,058 ---------- UTILITIES -- 2.4% American Electric Power 29,294 1,045 Centerpoint Energy (B) 30,900 379 Constellation Energy Group 62,499 3,340 DTE Energy (B) 19,887 945 Duke Energy (B) 64,400 1,770 Edison International 82,808 3,043 Energy East 55,600 1,557 Entergy 43,499 3,124 Exelon 54,100 2,535 FirstEnergy 38,500 1,705 FPL Group 8,000 325 KeySpan (B) 42,000 1,669 Northeast Utilities 138,817 2,750 NSTAR 35,100 2,055 Oneok (B) 115,222 3,555 Pepco Holdings 43,300 976 PG&E 50,200 1,796 Pinnacle West Capital 29,500 1,301 PPL 6,203 357 Progress Energy (B) 27,100 1,199 Sempra Energy 57,500 2,281 Southern 19,400 659 TXU 27,500 2,208 Xcel Energy (B) 76,800 1,415 ---------- 41,989 ---------- Total Common Stock (Cost $1,597,359) ($ Thousands) 1,722,904 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Number of Warrants --------- WARRANTS -- 0.0% Lucent Technologies, Expires 12/10/07* 758 $ -- ---------- Total Warrants (Cost $0) ($ Thousands) -- ---------- CORPORATE OBLIGATIONS (C) (E) -- 3.9% FINANCIALS -- 3.9% ASIF Global Financing XV (G) 3.026%, 09/02/05 $ 217 217 Allstate Life Global Funding II MTN (G) 3.080%, 06/15/06 1,077 1,077 American General Finance (G) 3.090%, 06/15/06 2,107 2,107 Bear Stearns EXL 3.100%, 06/15/06 4,166 4,166 CCN Bluegrass (G) 3.170%, 02/21/06 1,521 1,521 CIT Group MTN 3.260%, 05/12/06 5,851 5,851 3.199%, 07/29/05 267 267 3.163%, 04/19/06 585 586 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 1,170 1,170 Countrywide Home Loans MTN, Ser A 3.509%, 03/21/06 1,919 1,919 Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 702 702 3.152%, 06/23/05 1,428 1,428 3.040%, 11/30/05 2,668 2,668 2.810%, 01/31/06 515 515 Dekabank (G) 3.206%, 05/19/06 4,330 4,329 Five Finance MTN (G) 3.100%, 09/22/05 3,323 3,323 Harrier Finance Funding MTN (G) 3.034%, 09/15/05 679 679 Harrier Finance Funding MTN, Ser 1 (G) 3.016 %, 06/15/05 2,036 2,036 Irish Life & Permanent MTN, Ser X (G) 3.101%, 06/22/06 2,177 2,176 Jackson National Life Funding (G) 3.064%, 05/01/06 5,149 5,149 K2 MTN (G) 2.995%, 12/12/05 140 140 Lakeside Funding 3.120%, 06/08/05 1,170 1,170 Liberty Lighthouse US Capital MTN (G) 3.118%, 05/10/06 2,340 2,339 Morgan Stanley EXL 3.089%, 05/04/06 819 819 - -------------------------------------------------------------------------------- 16 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Morgan Stanley EXL, Ser S 3.085%, 06/02/06 $ 1,170 $ 1,170 Nationwide Building Society (G) 3.090%, 01/06/06 2,341 2,341 3.083%, 10/28/05 1,170 1,170 Northern Rock (G) 3.099%, 02/03/06 2,411 2,411 Pacific Life Global Funding (G) 3.080%, 06/13/06 1,755 1,755 Premium Asset Trust, Ser 2004-01 (G) 3.100%, 02/06/06 1,732 1,733 Premium Asset Trust, Ser 2004-10 (G) 3.100%, 04/14/06 3,277 3,277 SLM EXL, Ser S (G) 3.090%, 05/15/06 2,575 2,575 SLM MTN, Ser X (G) 3.090%, 06/20/06 4,681 4,681 White Pine Finance MTN, Ser 1 (G) 3.071%, 11/01/05 1,030 1,030 ---------- Total Corporate Obligations (Cost $68,497) ($ Thousands) 68,497 ---------- ASSET-BACKED SECURITIES (C) (E) (G) -- 2.0% AUTOMOTIVE -- 0.4% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 5,662 5,662 Drivetime Auto Owner Trust, Ser 2005-A, Cl A1 3.110%, 03/15/06 558 558 ---------- 6,220 ---------- MORTGAGE RELATED SECURITIES -- 1.6% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 1,498 1,498 Blue Heron Funding, Ser 6A, Cl A1 3.129%, 06/21/05 468 468 Blue Heron Funding, Ser 9A, Cl A1 3.120%, 02/22/06 2,341 2,341 CCN Independence IV 3.160%, 10/17/05 1,287 1,287 3.160%, 01/17/06 819 819 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 1,346 1,346 Commodore, Ser 2003-2A, Cl A1MM 3.100%, 12/12/38 1,077 1,077 Duke Funding, Ser 2004-6B, Cl A1S1 2.680%, 04/10/06 1,755 1,755 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Harwood Street Funding I, Ser 2004-1A, Cl NOTE 3.140%, 09/20/05 $ 3,324 $ 3,324 Harwood Street Funding II, Ser 2005-1A, Cl NOTE 3.141%, 06/25/06 2,340 2,340 Orchid Structured Finance, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 2,288 2,288 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 3,764 3,764 RMAC, Ser 2004-NS2A, Cl A1 3.080%, 06/13/05 417 417 RMAC, Ser 2004-NS3A, Cl A1 3.090%, 06/12/05 983 983 Saturn Ventures II 3.150%, 08/08/05 2,598 2,598 TIAA Real Estate, Ser 2003 1A, Cl A1 3.131%, 03/28/06 1,511 1,511 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 585 585 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC 3.030%, 09/15/05 421 421 ---------- 28,822 ---------- Total Asset-Backed Securities (Cost $35,042) ($ Thousands) 35,042 ---------- CASH EQUIVALENTS -- 1.5% First Union Cash Management Program 3,118,787 3,119 SEI Daily Income Trust, Prime Obligation Fund, Cl A++ 22,533,778 22,534 ---------- Total Cash Equivalents (Cost $25,653) ($ Thousands) 25,653 ---------- COMMERCIAL PAPER (C) (D) -- 0.9% FINANCIALS -- 0.9% Ajax Bambino Funding 3.119%, 07/06/05 2,340 2,333 Altimira Funding 3.004%, 06/16/05 305 305 Beethoven Funding 3.109%, 07/05/05 1,170 1,167 3.013%, 06/13/05 1,176 1,175 Brahms Funding 3.000%, 06/02/05 3,018 3,018 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 17 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Capital One Multi-Asset Funding 3.025%, 06/20/05 $ 936 $ 935 3.002%, 06/07/05 819 819 Cobbler Funding 3.057%, 06/28/05 428 427 Cre-8 Funding 3.106%, 06/23/05 819 818 Golden Fish 3.065%, 06/20/05 760 759 3.065%, 06/22/05 1,218 1,216 3.055%, 06/21/05 351 350 3.053%, 06/14/05 941 940 Rams Funding 3.121%, 06/06/05 1,170 1,170 ---------- Total Commercial Paper (Cost $15,432) ($ Thousands) 15,432 ---------- MASTER NOTES (C) -- 0.5% Bank of America Master Notes 3.143%, 06/01/05 5,851 5,851 Bear Stearns Master Notes 3.234%, 06/01/05 2,809 2,809 ---------- Total Master Notes (Cost $8,660) ($ Thousands) 8,660 ---------- CERTIFICATES OF DEPOSIT (C) (E) -- 0.3% U.S. Trust 3.215%, 09/12/05 2,340 2,340 Washington Mutual Bank 3.270%, 08/18/05 2,762 2,762 ---------- Total Certificates of Deposit (Cost $5,102) ($ Thousands) 5,102 ---------- U.S. TREASURY OBLIGATION -- 0.1% U.S. Treasury Bills (A) 2.934%, 08/25/05 1,540 1,530 ---------- Total U.S. Treasury Obligation (Cost $1,529) ($ Thousands) 1,530 ---------- REPURCHASE AGREEMENTS (C) -- 1.3% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $3,683,476 (collateralized by U.S. Government Obligation, par value $3,833,518 0.000%, 12/28/05; with total market value $3,756,847) 3,683 3,683 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $2,925,846 (collateralized by various U.S. Government Obligations, ranging in par value $35,458- $1,766,921, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $2,984,217) $ 2,926 $ 2,926 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $16,384,742 (collateralized by various U.S. Government Obligations, ranging in par value $683,771- $4,400,218, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $16,711,078) 16,383 16,383 ---------- Total Repurchase Agreements (Cost $22,992) ($ Thousands) 22,992 ---------- Total Investments -- 108.8% (Cost $1,780,266) ($ Thousands) 1,905,812 ---------- OTHER ASSETS AND LIABILITIES -- (8.8)% Payable upon Return on Securities Loaned (155,725) Payable for Investment Securities Purchased (2,465) Payable for Fund Shares Redeemed (1,568) Investment Advisory Fees Payable (364) Trustee's Fees Payable (5) Other Assets and Liabilities, Net 6,100 ---------- Total Other Assets and Liabilities (154,027) ---------- Net Assets -- 100.0% $1,751,785 ========== NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) $1,975,109 Undistributed net investment income 5,023 Accumulated net realized loss on investments and futures contracts (353,977) Net unrealized appreciation on investments 125,546 Net unrealized appreciation on futures contracts 84 ---------- Net Assets $1,751,785 ========== Net Asset Value, Offering and Redemption Price Per Share -- Class A ($1,751,751,272 / 112,766,866 shares) $15.53 ====== Net Asset Value, Offering and Redemption Price Per Share -- Class T ($33,379 / 2,151 shares) $15.52 ====== - -------------------------------------------------------------------------------- 18 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Description - -------------------------------------------------------------------------------- A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- CONTRACT UNREALIZED TYPE OF NUMBER OF VALUE EXPIRATION APPRECIATION CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- S&P Mid 400 Index E-Mini 25 $ 1,677 06/17/05 $21 S&P 500 Composite Index 54 16,096 06/18/05 63 --- $84 --- * Non-income producing security. + Real Estate Investment Trust ++ See Note 3 in Notes to Financial Statements. (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9). The total value of securities on loan at May 31, 2005 was $151,450 ($Thousands). (C) This security was purchased with cash collateral held from securities lending (see Note 9). The total value of such securities as of May 31, 2005 was $155,725 ($Thousands). (D) The rate reported is the effective yield at time of purchase. (E) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (F) Security considered illiquid. The total value of such securities as of May 31, 2005 was $0 and represents 0.00% of Net Assets. (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) Security fair valued using methods determined in good faith by the Valuation Committee of the Board of Trustees. The total value of such securities as of May 31, 2005 was $0 and represented 0.00% of Net Assets. ADR -- American Depositary Receipt Cl -- Class EXL -- Extendable Maturity MTN -- Medium Term Note Ser -- Series Amount designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 19 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Disciplined Equity Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++ 22.7% Financials 13.5% Information Technology 12.0% Health Care 10.8% Industrials 9.3% Consumer Discretionary 9.1% Consumer Staples 8.4% Energy 3.5% Short-Term Investments 2.8% Materials 2.7% Telecommunication Services 2.7% Utilities 2.0% Asset-Backed Securities 0.3% Certificates of Deposit 0.2% U.S. Treasury Obligations ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 97.8% CONSUMER DISCRETIONARY -- 10.2% Abercrombie & Fitch, Cl A 11,000 $ 631 Aeropostale* 5,101 139 Amazon.Com (B)* 81,602 2,898 American Axle & Manufacturing Holdings (B) 31,295 648 American Eagle Outfitters 39,547 1,119 American Greetings, Cl A (B) 17,266 449 Autoliv 37,846 1,756 Autonation (B)* 154,955 3,099 Barnes & Noble* 35,394 1,340 Best Buy 7,989 435 BJ's Wholesale Club* 10,900 329 Black & Decker 101,938 8,901 Blyth 1,531 43 Brinker International* 35,068 1,319 Brunswick 51,266 2,206 Carnival (B) 105,976 5,606 CBRL Group 32,316 1,316 Centex (B) 59,056 3,867 Choice Hotels International 15,980 1,048 Circuit City Stores 39,000 639 Claire's Stores 23,277 549 Coach (B)* 189,700 5,509 Comcast, Cl A* 383,529 12,350 Comcast, Special Cl A (B)* 12,755 404 Dana 29,000 393 Darden Restaurants 120,701 3,920 Dillard's, Cl A 36,700 878 Dollar General 16,500 324 DR Horton 231,932 8,018 Eastman Kodak (B) 129,100 3,393 eBay* 195,042 7,414 EchoStar Communications, Cl A (B)* 349,856 10,226 Federated Department Stores (B) 23,845 1,608 Ford Motor 592,304 5,911 Fortune Brands (B) 125,625 10,867 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- GameStop, Cl B* 13,650 $ 366 Gannett (B) 91,768 6,833 Gap (B) 378,712 7,953 Gemstar-TV Guide International* 17,287 59 Genesco* 9,700 332 Genuine Parts 59,000 2,535 Goodyear Tire & Rubber (B)* 95,400 1,373 Harley-Davidson 5,900 289 Harman International Industries 44,357 3,675 Harrah's Entertainment 7,800 560 Hibbett Sporting Goods* 15,700 551 Hilton Hotels 51,418 1,246 Home Depot 1,207,971 47,534 HOT Topic* 29,500 633 Jack in the Box (B)* 2,600 108 Jakks Pacific (B)* 33,200 686 JC Penney (B) 361,566 17,991 Johnson Controls 9,512 539 Jones Apparel Group 81,500 2,601 KB Home 21,500 1,452 Knight-Ridder 7,400 467 Kohl's* 7,400 360 Leggett & Platt 16,300 434 Liberty Media, Cl A* 51,500 535 Liberty Media International, Cl B* 28,400 1,190 Limited Brands 210,000 4,320 Liz Claiborne (B) 18,300 687 Lowe's 139,752 7,995 Marriott International, Cl A 27,200 1,837 May Department Stores 16,408 626 McDonald's (B) 382,232 11,826 McGraw-Hill 35,417 1,546 MDC Holdings 18,800 1,358 Media General, Cl A 1,139 70 Meredith 19,653 975 MGM Mirage (B)* 240,280 9,152 Michaels Stores 14,871 626 News, Cl A 220,900 3,563 Nike, Cl B (B) 6,390 525 Nordstrom 59,813 3,651 NVR (B)* 6,774 5,141 Omnicom Group 11,500 942 Petco Animal Supplies* 12,287 370 Polaris Industries (B) 19,741 1,036 Pulte Homes (B) 21,258 1,625 Reebok International 36,600 1,490 Regal Entertainment Group, Cl A (B) 54,585 1,086 Rent-A-Center* 27,480 650 Royal Caribbean Cruises (B) 32,725 1,509 Sears Holdings* 7,100 1,042 Select Comfort (B)* 29,700 722 Sherwin-Williams 38,700 1,720 Standard-Pacific 3,400 272 - -------------------------------------------------------------------------------- 20 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Stanley Works 34,800 $ 1,552 Staples 76,166 1,640 Starbucks (B)* 121,204 6,636 Starwood Hotels & Resorts Worldwide 47,663 2,668 Target (B) 149,062 8,005 Timberland, Cl A (B)* 437 16 Time Warner* 809,628 14,088 Toys "R" Us* 58,100 1,522 Tribune (B) 60,634 2,194 VF 15,200 858 Viacom, Cl B 369,415 12,667 Walt Disney 1,061,375 29,124 Washington Post, Cl B 696 578 Whirlpool (B) 29,891 2,056 Yum! Brands 10,000 513 ---------- 360,333 ---------- CONSUMER STAPLES -- 10.0% Alberto-Culver 3,042 135 Albertson's (B) 32,000 672 Altria Group 390,234 26,200 Anheuser-Busch (B) 511,520 23,965 Archer-Daniels-Midland 813,456 16,147 Avon Products 460,553 18,302 Bunge 43,690 2,710 Chiquita Brands International (B) 10,700 311 Clorox 125,528 7,332 Coca-Cola 691,146 30,846 Coca-Cola Enterprises 110,632 2,421 Colgate-Palmolive 144,213 7,206 ConAgra Foods 6,600 172 Costco Wholesale (B) 212,772 9,664 CVS 32,400 1,777 Energizer Holdings (B)* 101,815 6,402 General Mills 14,700 728 Gillette 282,829 14,916 Hershey 40,566 2,605 Hormel Foods 6,410 190 Kellogg 31,585 1,437 Kimberly-Clark 218,156 14,034 Kraft Foods, Cl A 6,800 221 Kroger (B)* 96,254 1,614 Loews--Carolina Group 153,219 4,578 McCormick 12,700 430 Molson Coors Brewing, Cl B 4,900 286 Pepsi Bottling Group (B) 354,521 10,058 PepsiAmericas 19,000 460 PepsiCo 218,182 12,275 Pilgrim's Pride (B) 226,376 7,980 Procter & Gamble (B) 480,379 26,493 Reynolds American (B) 84,441 7,001 Safeway* 40,600 894 Sanderson Farms 4,900 186 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Sara Lee 84,400 $ 1,712 Smithfield Foods* 140,653 4,196 Supervalu 182,556 5,980 Tyson Foods, Cl A 186,170 3,437 UST (B) 134,400 5,989 Wal-Mart Stores 1,412,342 66,705 Walgreen 71,703 3,251 Whole Foods Market 3,000 357 WM Wrigley Jr 18,100 1,236 ---------- 353,511 ---------- ENERGY -- 9.2% Amerada Hess (B) 29,000 2,693 Anadarko Petroleum 176,295 13,345 Apache 104,084 6,116 Ashland 34,427 2,351 Baker Hughes (B) 171,615 7,927 Burlington Resources 46,848 2,374 ChevronTexaco 763,746 41,074 ConocoPhillips 454,254 48,987 Devon Energy 120,279 5,521 Diamond Offshore Drilling (B) 16,900 798 El Paso (B) 69,300 717 EOG Resources (B) 51,900 2,589 Exxon Mobil 1,804,371 101,406 Halliburton 71,630 3,061 Kerr-McGee 7,511 555 Kinder Morgan 2,934 228 Marathon Oil 156,545 7,591 National Oilwell Varco* 11,400 513 Noble 20,800 1,178 Occidental Petroleum 379,657 27,757 Overseas Shipholding Group (B) 16,729 1,022 Patterson-UTI Energy 35,318 936 Pogo Producing (B) 42,033 2,078 Premcor 6,347 431 Rowan* 3,600 99 Schlumberger (B) 154,634 10,572 Sunoco (B) 32,529 3,336 Tidewater 14,100 488 Todco, Cl A* 7,800 178 Transocean* 144,100 7,178 Unit* 6,200 242 Unocal 32,427 1,848 Valero Energy (B) 244,743 16,794 Williams 84,800 1,561 XTO Energy 14,266 444 ---------- 323,988 ---------- FINANCIALS -- 19.6% ACE (B) 199,075 8,604 Allstate 292,595 17,029 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 21 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Disciplined Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- AMBAC Financial Group 4,651 $ 335 American Capital Strategies (B) 15,378 538 American Express 184,746 9,949 American Financial Group 25,400 823 American International Group 728,932 40,492 AmeriCredit (B)* 4,900 122 Apartment Investment & Management, Cl A+ 48,100 1,784 Archstone-Smith Trust+ 47,600 1,753 Astoria Financial 4,887 135 Axis Capital Holdings 44,371 1,221 Bank of America 1,962,848 90,919 Bank of New York 8,525 246 BB&T (B) 129,200 5,160 Bear Stearns (B) 80,294 7,952 Capital One Financial 18,021 1,359 Chubb 8,100 682 CIT Group 89,217 3,785 Citigroup 2,038,714 96,044 Comerica 32,600 1,822 Compass Bancshares 13,400 597 Countrywide Financial 652,218 24,243 Equity Office Properties Trust+ 6,700 218 Equity Residential+ 20,000 718 Everest Re Group 36,147 3,235 Fannie Mae 507,688 30,075 Fifth Third Bancorp (B) 25,505 1,087 First American 57,148 2,212 First Bancorp Puerto Rico 16,200 621 Franklin Resources (B) 23,409 1,689 Freddie Mac 185,036 12,035 Genworth Financial, Cl A 13,900 403 Golden West Financial 25,742 1,612 Goldman Sachs Group 164,959 16,083 Hartford Financial Services Group (B) 52,064 3,894 Health Care+ 7,889 283 Independence Community Bank 12,718 477 Infinity Property & Casualty 4,900 157 JPMorgan Chase 1,079,188 38,581 Keycorp 70,100 2,296 LandAmerica Financial Group (B) 10,100 568 Lehman Brothers Holdings 163,329 15,059 Lincoln National 36,614 1,667 Loews 37,805 2,847 M&T Bank (B) 9,500 970 Mack-Cali Realty+ 6,454 284 Marshall & Ilsley 9,000 392 MBIA 27,000 1,510 MBNA 619,852 13,073 Merrill Lynch 392,932 21,320 Metlife (B) 201,455 8,985 MGIC Investment 51,700 3,171 Moody's 32,470 1,405 Morgan Stanley 440,212 21,553 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- National City 477,072 $ 16,488 Nationwide Financial Services, Cl A 15,794 603 North Fork Bancorporation 176,200 4,803 Northern Trust 4,900 225 PartnerRe 24,286 1,605 Plum Creek Timber+ (B) 4,500 158 PNC Financial Services Group 24,628 1,346 Popular 1,666 39 Principal Financial Group 46,900 1,871 Progressive 12,724 1,222 Prologis+ 10,600 433 Providian Financial (B)* 98,069 1,748 Regions Financial (B) 60,100 2,024 Reinsurance Group of America (B) 19,153 876 RenaissanceRe Holdings 33,718 1,588 Safeco (B) 33,861 1,822 Simon Property Group+ 33,381 2,294 SLM 32,300 1,559 St. Paul Travelers 48,500 1,837 Stancorp Financial Group 3,123 234 SunTrust Banks 6,200 456 Synovus Financial (B) 35,900 1,044 T Rowe Price Group (B) 34,464 2,056 Torchmark 7,569 399 Trizec Properties+ (B) 5,860 114 UnionBanCal 4,064 255 UnumProvident 57,700 1,059 US Bancorp (B) 754,915 22,142 Wachovia 840,767 42,669 Washington Mutual 414,647 17,125 Wells Fargo 475,214 28,708 WR Berkley 199,025 7,057 XL Capital, Cl A 42,743 3,218 Zions Bancorporation 15,500 1,098 ---------- 694,249 ---------- HEALTH CARE -- 13.2% Abbott Laboratories 154,981 7,476 Aetna 58,432 4,558 Alcon 4,263 436 Allergan (B) 142,001 10,978 American Pharmaceutical Partners* 1 -- AmerisourceBergen (B) 155,892 10,066 Amgen (B)* 544,539 34,077 Applera--Applied Biosystems Group (B) 7,600 163 Barr Pharmaceuticals* 19,514 992 Bausch & Lomb 50,710 3,960 Baxter International 158,800 5,860 Becton Dickinson 269,826 15,502 Biogen Idec (B)* 5,500 215 Biomet 15,400 581 Bone Care International* 18,400 602 - -------------------------------------------------------------------------------- 22 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Boston Scientific* 252,648 $ 6,844 Bristol-Myers Squibb 99,747 2,530 C.R. Bard 57,004 3,891 Cardinal Health (B) 335,791 19,452 Caremark Rx* 158,200 7,065 Celgene* 59,333 2,512 Cigna (B) 155,336 15,106 Coventry Health Care (B)* 88,325 6,149 DaVita* 2,397 110 Eli Lilly 33,819 1,972 Express Scripts* 55,590 5,136 Fisher Scientific International (B)* 2,800 175 Forest Laboratories* 11,268 435 Genentech* 24,636 1,952 Genzyme* 11,000 686 Gilead Sciences* 238,691 9,739 Guidant 60,391 4,462 HCA 240,099 12,965 Hillenbrand Industries 4,212 213 Hospira* 129,290 4,923 Humana* 167,965 6,107 ICOS* 8,100 175 ImClone Systems (B)* 12,595 417 IMS Health 4,561 112 Invitrogen (B)* 21,800 1,729 Johnson & Johnson 1,283,055 86,093 King Pharmaceuticals* 16,451 156 Laboratory of America Holdings (B)* 13,500 654 Lincare Holdings (B)* 17,757 781 McKesson (B) 268,622 10,817 Medco Health Solutions* 53,524 2,676 Medicis Pharmaceutical, Cl A (B) 140,500 3,959 Medimmune* 16,300 430 Medtronic 252,436 13,569 Merck 787,192 25,537 Molina Healthcare* 4,000 171 Nu Skin Enterprises, Cl A 28,200 637 PerkinElmer 101,115 1,934 Pfizer 1,947,909 54,347 Quest Diagnostics 54,300 5,702 Schering-Plough (B) 154,700 3,017 St. Jude Medical* 36,144 1,450 Stryker 16,864 821 Thermo Electron* 118,463 3,118 Thoratec* 21,300 318 UnitedHealth Group 358,960 17,438 USANA Health Sciences* 1,400 62 Waters* 16,016 622 WellPoint* 15,332 2,039 Wyeth 373,397 16,194 Zimmer Holdings* 31,595 2,420 ---------- 465,285 ---------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- INDUSTRIALS -- 11.8% 3M 380,252 $ 29,146 Accenture, Cl A (B)* 230,180 5,359 AGCO* 7,671 141 Alexander & Baldwin 8,041 357 American Power Conversion 16,900 430 American Standard 50,200 2,149 Apollo Group, Cl A (B)* 80,449 6,315 Armor Holdings (B)* 38,800 1,465 Boeing 107,118 6,845 Brink's 46,964 1,466 Burlington Northern Santa Fe 255,942 12,649 Career Education (B)* 53,974 1,871 Caterpillar (B) 123,990 11,669 Cendant 1,132,175 24,013 Cooper Industries, Cl A 50,543 3,484 CSX 38,196 1,588 Cummins (B) 157,003 10,668 Danaher (B) 16,840 928 Deere 75,157 4,972 Deluxe 178,397 7,209 Eaton 82,734 4,952 Emerson Electric 88,615 5,890 Equifax 138,895 4,818 ExpressJet Holdings* 7,500 65 FedEx (B) 129,165 11,550 Fluor (B) 12,200 701 General Dynamics 70,707 7,635 General Electric 2,439,468 88,992 Goodrich 30,765 1,288 Graco 27,717 967 Herman Miller 700 20 Honeywell International 111,153 4,027 Illinois Tool Works 62,421 5,270 Ingersoll-Rand, Cl A 32,985 2,553 Innovative Solutions & Support* 6,300 218 iPayment* 10,900 416 ITT Industries 1,700 162 JB Hunt Transport Services (B) 128,846 2,587 Kennametal 7,200 317 L-3 Communications Holdings 111,255 7,875 Lockheed Martin (B) 516,604 33,522 Masco 53,191 1,703 Norfolk Southern 182,391 5,822 Northrop Grumman 188,710 10,515 Paccar 104,914 7,423 Pall 5,900 172 Parker Hannifin 22,423 1,353 PHH* 8,610 207 Pitney Bowes 3,600 161 Precision Castparts 8,638 671 Raytheon 134,256 5,257 Reliance Steel & Aluminum 8,900 343 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 23 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Disciplined Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Republic Services 5,566 $ 197 Robert Half International 10,584 264 Rockwell Automation 88,763 4,560 Rockwell Collins 94,377 4,661 RR Donnelley & Sons 39,700 1,320 Ryder System 121,859 4,477 Southwest Airlines 52,767 768 Stericycle* 6,600 327 Swift Transportation (B)* 48,800 1,198 Teekay Shipping (B) 10,095 429 Textron 53,500 4,135 Tyco International 755,884 21,868 United Parcel Service, Cl B 160,350 11,810 United Technologies 65,322 6,970 WW Grainger 43,061 2,342 Yellow Roadway (B)* 38,900 2,053 ---------- 417,555 ---------- INFORMATION TECHNOLOGY -- 14.8% 3Com* 83,308 305 Adobe Systems (B) 279,168 9,229 Advanced Micro Devices (B)* 74,862 1,228 Affiliated Computer Services, Cl A* 8,611 445 Agilent Technologies (B)* 156,326 3,753 Altera* 8,100 180 Apple Computer (B)* 462,946 18,384 Autodesk 288,821 11,432 Automatic Data Processing 54,253 2,376 Avaya* 28,500 261 Black Box 3,000 103 Broadcom, Cl A (B)* 19,576 695 CDW 2,200 128 Cisco Systems* 2,656,281 51,479 Citrix Systems* 28,400 715 Computer Associates International 19,157 522 Computer Sciences (B)* 118,719 5,498 Comverse Technology (B)* 37,800 889 Convergys* 89,908 1,225 Corning (B)* 11,600 182 Dell* 624,283 24,903 Dun & Bradstreet* 13,566 834 Electronic Arts* 15,706 825 Electronic Data Systems 27,000 532 EMC* 595,825 8,377 Fair Isaac 2,500 86 First Data 129,703 4,907 Fiserv* 38,700 1,664 Google, Cl A (B)* 34,648 9,646 Harris 21,140 608 Hewlett-Packard 887,927 19,987 Ingram Micro, Cl A* 27,453 434 Intel 2,387,604 64,298 International Business Machines 458,007 34,602 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Internet Security Systems* 10,200 $ 226 Intuit* 129,921 5,615 Lam Research* 2,990 92 Lexmark International, Cl A* 22,230 1,521 Linear Technology 91,060 3,412 Lucent Technologies (B)* 340,938 958 MEMC Electronic Materials (B)* 290,109 3,974 Micron Technology (B)* 649,105 7,127 Microsoft 3,364,103 86,794 Motorola 1,371,119 23,816 National Semiconductor 21,278 428 NCR* 111,400 4,081 Network Appliance* 164,322 4,726 Nvidia* 6,300 171 Oracle* 2,043,862 26,202 Portalplayer (B)* 1,800 37 QLogic (B)* 51,620 1,653 Qualcomm 568,113 21,168 Sabre Holdings, Cl A 197,244 3,959 Sanmina-SCI* 1 -- Scientific-Atlanta (B) 190,598 6,347 Serena Software* 5,100 100 Sun Microsystems* 838,712 3,195 Sungard Data Systems* 35,023 1,216 Symantec (B)* 93,334 2,110 Symbol Technologies 25,300 291 Synopsys* 60,333 1,090 Tektronix 8,084 183 Texas Instruments 345,265 9,543 Western Digital* 142,616 2,141 Xerox (B)* 318,166 4,318 Yahoo!* 376,290 13,998 ---------- 521,224 ---------- MATERIALS -- 3.1% Alcoa 10,082 273 Allegheny Technologies 72,100 1,533 Ball 86,940 3,265 Bemis 11,500 312 Crompton 9,400 144 Dow Chemical (B) 625,774 28,341 E.I. Du Pont de Nemours 109,191 5,079 Eastman Chemical 171,618 10,088 Ecolab 36,226 1,171 Freeport-McMoRan Copper & Gold, Cl B 1,735 61 Georgia-Pacific 319,777 10,597 Hercules* 44,900 622 Huntsman* 8,417 162 International Flavors & Fragrances 45,419 1,685 Louisiana-Pacific 194,530 4,898 Lyondell Chemical 90,770 2,155 MeadWestvaco 4,500 129 - -------------------------------------------------------------------------------- 24 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Monsanto (B) 125,884 $ 7,175 Nucor (B) 174,282 9,230 Pactiv* 5,249 120 Phelps Dodge (B) 156,596 13,687 Praxair 5,480 257 Sigma-Aldrich 3,808 228 Steel Dynamics (B) 34,761 935 Temple-Inland 17,000 607 United States Steel (B) 134,864 5,364 Valspar 13,679 648 Vulcan Materials 2,200 132 Wellman 8,600 97 ---------- 108,995 ---------- TELECOMMUNICATION SERVICES -- 3.0% Alltel (B) 14,000 814 AT&T 338,459 6,360 BellSouth 424,950 11,372 CenturyTel (B) 141,618 4,644 Citizens Communications (B) 95,100 1,297 Nextel Communications, Cl A* 683,999 20,643 SBC Communications (B) 583,176 13,635 Sprint (B) 443,491 10,506 Verizon Communications 1,022,483 36,175 ---------- 105,446 ---------- UTILITIES -- 2.9% AES (B)* 342,794 5,104 Allegheny Energy (B)* 85,300 2,062 Alliant Energy 38,260 1,056 Ameren 3,400 185 American Electric Power (B) 129,000 4,604 Centerpoint Energy (B) 268,157 3,288 CMS Energy (B)* 42,100 557 Consolidated Edison 700 32 Constellation Energy Group 106,821 5,710 Dominion Resources 6,700 471 DTE Energy (B) 11,300 537 Duke Energy 44,500 1,223 Edison International 304,570 11,193 Energen 1,600 104 Energy East 5,242 147 Entergy 116,839 8,392 Exelon 220,717 10,341 FirstEnergy 122,185 5,413 FPL Group 9,000 366 Nicor (B) 4,800 190 NiSource 48,889 1,178 NSTAR 5,155 302 Oneok (B) 8,000 247 PG&E (B) 88,604 3,169 Pinnacle West Capital 26,300 1,160 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- PPL 18,600 $ 1,070 Progress Energy (B) 5,577 247 Public Service Enterprise Group 8,300 461 Puget Energy 12,931 294 Sempra Energy 175,988 6,981 Southern 22,500 764 TECO Energy (B) 24,100 426 TXU 302,950 24,321 UGI 7,486 198 Xcel Energy 73,300 1,351 ---------- 103,144 ---------- Total Common Stock (Cost $3,200,832) ($ Thousands) 3,453,730 ---------- CORPORATE OBLIGATIONS (C) (E) -- 4.3% FINANCIALS -- 4.3% ASIF Global Financing XV (F) 3.020%, 09/02/05 $ 480 480 Allstate Life Global Funding II MTN (F) 3.080%, 06/15/06 2,377 2,377 American General Finance (F) 3.090%, 06/15/06 4,651 4,651 Bear Stearns EXL 3.100%, 06/15/06 9,198 9,198 CCN Bluegrass (F) 3.170%, 02/21/06 3,359 3,359 CIT Group MTN 3.260%, 05/12/06 12,918 12,918 3.199%, 07/29/05 589 589 3.163%, 04/19/06 1,292 1,293 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 2,584 2,584 Countrywide Home Loans MTN, Ser A 3.509%, 03/21/06 4,237 4,237 Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 1,550 1,550 3.152%, 06/23/05 3,152 3,152 3.040%, 11/30/05 5,891 5,891 2.810%, 01/31/06 1,137 1,137 Dekabank (F) 3.206%, 05/19/06 9,560 9,558 Five Finance MTN (F) 3.100%, 09/22/05 7,338 7,337 Harrier Finance Funding MTN (F) 3.034%, 09/15/05 1,499 1,498 Harrier Finance Funding MTN, Ser 1 (F) 3.016%, 06/15/05 4,496 4,496 Irish Life & Permanent MTN, Ser X (F) 3.101%, 06/22/06 4,806 4,805 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 25 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Disciplined Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Jackson National Life Funding (F) 3.064%, 05/01/06 $11,368 $ 11,368 K2 MTN (F) 2.995%, 12/12/05 310 310 Lakeside Funding 3.120%, 06/08/05 2,584 2,584 Liberty Lighthouse US Capital MTN (F) 3.118%, 05/10/06 5,167 5,164 Morgan Stanley EXL 3.089%, 05/04/06 1,809 1,809 Morgan Stanley EXL, Ser S 3.085%, 06/02/06 2,584 2,583 Nationwide Building Society (F) 3.090%, 01/06/06 5,167 5,167 3.083%, 10/28/05 2,584 2,584 Northern Rock (F) 3.099%, 02/03/06 5,322 5,322 Pacific Life Global Funding (F) 3.080%, 06/13/06 3,876 3,876 Premium Asset Trust, Ser 2004-01 (F) 3.100%, 02/06/06 3,824 3,827 Premium Asset Trust, Ser 2004-10 (F) 3.100%, 04/14/06 7,234 7,234 SLM EXL, Ser S (F) 3.090 %, 05/15/06 5,684 5,684 SLM MTN, Ser X (F) 3.090%, 06/20/06 10,335 10,335 White Pine Finance MTN, Ser 1 (F) 3.071%, 11/01/05 2,274 2,273 ---------- Total Corporate Obligations (Cost $151,230) ($ Thousands) 151,230 ---------- ASSET-BACKED SECURITIES (C) (E) (F) -- 2.2% AUTOMOTIVE -- 0.4% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 12,501 12,501 Drivetime Auto Owner Trust, Ser 2005-A, Cl A1 3.110%, 03/15/06 1,231 1,231 ---------- 13,732 ---------- MORTGAGE RELATED SECURITIES -- 1.8% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 3,307 3,307 Blue Heron Funding, Ser 6A, Cl A1 3.129%, 06/21/05 1,033 1,033 Blue Heron Funding, Ser 9A, Cl A1 3.120%, 02/22/06 5,167 5,167 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- CCN Independence IV 3.160%, 10/17/05 $ 2,842 $ 2,842 3.160%, 01/17/06 1,809 1,809 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 2,971 2,971 Commodore, Ser 2003-2A, Cl A1MM 3.100%, 12/12/38 2,377 2,377 Duke Funding, Ser 2004-6B, Cl A1S1 2.680%, 04/10/06 3,875 3,875 Harwood Street Funding I, Ser 2004-1A, Cl NOTE 3.140%, 09/20/05 7,338 7,338 Harwood Street Funding II, Ser 2005-1A, Cl NOTE 3.141%, 06/25/06 5,167 5,167 Orchid Structured Finance, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 5,051 5,051 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 8,310 8,310 RMAC, Ser 2004-NS2A, Cl A1 3.080%, 06/13/05 921 921 RMAC, Ser 2004-NS3A, Cl A1 3.090%, 06/12/05 2,171 2,171 Saturn Ventures II 3.150%, 08/08/05 5,736 5,736 TIAA Real Estate, Ser 2003 1A, Cl A1 3.131%, 03/28/06 3,337 3,337 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 1,292 1,292 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC 3.030%, 09/15/05 930 930 ---------- 63,634 ---------- Total Asset-Backed Securities (Cost $77,366) ($ Thousands) 77,366 ---------- CASH EQUIVALENTS -- 1.9% First Union Cash Management Program 886,947 887 SEI Daily Income Trust, Prime Obligation Fund, Cl A++ 63,688,929 63,689 ---------- Total Cash Equivalents (Cost $64,576) ($ Thousands) 64,576 ---------- - -------------------------------------------------------------------------------- 26 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- COMMERCIAL PAPER (C) (D) -- 1.0% FINANCIALS -- 1.0% Ajax Bambino Funding 3.119%, 07/06/05 $ 5,167 $ 5,152 Altimira Funding 3.004%, 06/16/05 673 672 Beethoven Funding 3.109%, 07/05/05 2,584 2,576 3.013%, 06/13/05 2,597 2,595 Brahms Funding 3.000%, 06/02/05 6,664 6,663 Capital One Multi-Asset Funding 3.025%, 06/20/05 2,067 2,064 3.002%, 06/07/05 1,809 1,808 Cobbler Funding 3.057%, 06/28/05 946 943 Cre-8 Funding 3.106%, 06/23/05 1,809 1,805 Golden Fish 3.065%, 06/20/05 1,678 1,675 3.065%, 06/22/05 2,689 2,684 3.055%, 06/21/05 775 774 3.053%, 06/14/05 2,078 2,076 Rams Funding 3.121%, 06/06/05 2,584 2,583 ---------- Total Commercial Paper (Cost $34,070) ($ Thousands) 34,070 ---------- MASTER NOTES (C) -- 0.5% Bank of America Master Notes 3.143%, 06/01/05 12,919 12,919 Bear Stearns Master Notes 3.234%, 06/01/05 6,201 6,201 ---------- Total Master Notes (Cost $19,120) ($ Thousands) 19,120 ---------- CERTIFICATES OF DEPOSIT (C) (E) -- 0.3% U.S. Trust 3.215%, 09/12/05 5,167 5,167 Washington Mutual Bank 3.270%, 08/18/05 6,098 6,098 ---------- Total Certificates of Deposit (Cost $11,265) ($ Thousands) 11,265 ---------- U.S. TREASURY OBLIGATIONS -- 0.2% U.S. Treasury Bills 2.907%, 08/25/05 (A) 6,560 6,516 2.790%, 06/23/05 300 299 2.744%, 06/16/05 (A) 200 200 ---------- Total U.S. Treasury Obligations (Cost $7,015) ($ Thousands) 7,015 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- REPURCHASE AGREEMENTS (C) -- 1.4% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $8,132,521 (collateralized by U.S. Government Obligation, par value $8,463,788 0.000%, 12/28/05; with total market value $8,294,512) $ 8,132 $ 8,132 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $6,459,796 (collateralized by various U.S. Government Obligations, ranging in par value $78,286- $3,901,077, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $6,588,670) 6,459 6,459 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $36,174,865 (collateralized by various U.S. Government Obligations, ranging in par value $1,509,656- $9,714,970, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $36,895,362) 36,172 36,172 ---------- Total Repurchase Agreements (Cost $50,763) ($ Thousands) 50,763 ---------- Total Investments -- 109.6% (Cost $3,616,237) ($ Thousands) 3,869,135 ---------- OTHER ASSETS AND LIABILITIES -- (9.6)% Payable upon Return on Securities Loaned (343,814) Payable for Investment Securities Purchased (87,090) Payable for Fund Shares Redeemed (23,725) Investment Advisory Fees Payable (779) Trustees' Fees Payable (11) Other Assets and Liabilities, Net 117,645 ---------- Total Other Assets and Liabilities (337,774) ---------- Net Assets -- 100.0% $3,531,361 ========== - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 27 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Disciplined Equity Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Value Description ($ Thousands) - -------------------------------------------------------------------------------- NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) $3,226,016 Undistributed net investment income 9,088 Accumulated net realized gain on investments and futures contracts 42,564 Net unrealized appreciation on investments 252,898 Net unrealized appreciation on futures contracts 795 ---------- Net Assets $3,531,361 ========== Net Asset Value, Offering and Redemption Price Per Share -- Class A ($3,531,360,879 / 29,309,976 shares) $120.48 ======= A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- CONTRACT UNREALIZED TYPE OF NUMBER OF VALUE EXPIRATION APPRECIATION CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- S&P 500 Composite Index 421 $125,490 06/18/05 $795 ---- * Non-income producing security. + Real Estate Investment Trust ++ See Note 3 in Notes to Financial Statements. (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9). The total value of securities on loan at May 31, 2005 was $333,290 ($Thousands). (C) This security was purchased with cash collateral held from securities lending (see Note 9). The total value of such securities as of May 31, 2005 was $343,814 ($Thousands). (D) The rate reported is the effective yield at time of purchase. (E) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (F) 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." Cl -- Class EXL -- Extendable Maturity MTN -- Medium Term Note Ser -- Series Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 28 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Large Cap Index Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++ 24.2% Financials 13.7% Information Technology 12.3% Health Care 10.5% Consumer Discretionary 9.6% Industrials 8.4% Consumer Staples 6.9% Energy 3.1% Utilities 3.0% Short-Term Investments 2.7% Materials 2.7% Telecommunication Services 2.4% Asset-Backed Securities 0.4% Certificates of Deposit 0.1% U.S. Treasury Obligations ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 98.8% CONSUMER DISCRETIONARY -- 11.8% 7-Eleven* 577 $ 17 Abercrombie & Fitch, Cl A 2,330 134 Adesa 2,372 54 Advance Auto Parts* 1,992 118 Amazon.Com (B)* 7,935 282 American Axle & Manufacturing Holdings 950 20 American Eagle Outfitters 3,264 92 AnnTaylor Stores* 1,847 48 Applebees International 2,175 59 Autoliv 2,483 115 Autonation* 4,490 90 Autozone* 1,448 131 Barnes & Noble* 1,422 54 Bed Bath & Beyond* 8,031 326 Belo, Cl A 2,660 65 Best Buy 7,077 385 Big Lots* 2,988 38 BJ's Wholesale Club* 1,872 56 Black & Decker 2,117 185 Blockbuster, Cl A (B) 4,725 43 Borders Group 2,009 51 BorgWarner 1,422 76 Brinker International* 2,310 87 Brunswick 2,484 107 Cabela's, Cl A (B)* 211 4 Cablevision Systems, Cl A* 4,492 115 Caesars Entertainment (B)* 8,222 177 Carmax* 2,827 72 Centex 3,287 215 Cheesecake Factory (B)* 2,046 72 Chico's FAS (B)* 4,765 163 Choice Hotels International 522 34 Circuit City Stores 5,249 86 Citadel Broadcasting* 1,300 15 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Claire's Stores 2,327 $ 55 Clear Channel Communications (B) 13,243 387 Coach* 10,060 292 Columbia Sportswear (B)* 438 20 Comcast, Cl A (B)* 57,217 1,842 Cox Radio, Cl A* 916 15 Dana 4,058 55 Darden Restaurants 4,327 141 Delphi 12,843 56 Dex Media 1,520 33 Dillard's, Cl A 1,675 40 DIRECTV Group (B)* 17,134 256 Dollar General 7,812 153 Dollar Tree Stores* 3,088 77 Dow Jones 1,547 55 DR Horton (B) 8,306 287 DreamWorks Animation SKG, Cl A* 825 24 E.W. Scripps, Cl A 1,628 83 Eastman Kodak (B) 7,661 201 eBay* 27,752 1,055 EchoStar Communications, Cl A (B)* 6,024 176 Entercom Communications* 982 33 Family Dollar Stores (B) 4,062 104 Federated Department Stores (B) 4,522 305 Foot Locker 4,163 110 Ford Motor 47,017 469 Fortune Brands 3,909 338 Fossil* 1,098 23 Gannett 6,821 508 Gap 16,601 349 Gemstar-TV Guide International* 6,756 23 General Motors (B) 12,374 390 Gentex 3,932 70 Genuine Parts 4,645 200 Getty Images (B)* 1,177 88 GTECH Holdings 3,078 87 Harley-Davidson (B) 7,887 387 Harman International Industries 1,568 130 Harrah's Entertainment 3,016 217 Harte-Hanks 1,489 44 Hasbro 3,967 80 Hearst-Argyle Television 863 22 Hilton Hotels 10,192 247 Home Depot 59,898 2,357 Hovnanian Enterprises, Cl A (B)* 932 58 IAC/InterActive (B)* 8,647 212 International Game Technology 9,327 263 International Speedway, Cl A 912 50 Interpublic Group (B)* 11,221 138 JC Penney 6,511 324 John Wiley & Sons, Cl A 1,242 48 Johnson Controls 5,079 288 Jones Apparel Group 3,394 108 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 29 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Index Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- KB Home 1,888 $ 128 Knight-Ridder 2,106 133 Kohl's* 8,020 390 Lamar Advertising, Cl A* 2,140 90 Las Vegas Sands 833 30 Lear (B) 1,825 69 Lee Enterprises 1,187 49 Leggett & Platt 5,136 137 Lennar, Cl A 3,517 204 Liberty Media, Cl A* 72,082 749 Liberty Media International, Cl B (B)* 4,320 181 Limited Brands 9,539 196 Liz Claiborne (B) 2,982 112 Lowe's 21,006 1,202 Marriott International, Cl A 5,145 347 Marvel Enterprises (B)* 1,806 38 Mattel 11,237 204 May Department Stores 7,752 296 Maytag (B) 2,001 29 McClatchy, Cl A 474 33 McDonald's 33,651 1,041 McGraw-Hill 10,238 447 MDC Holdings 816 59 Media General, Cl A 601 37 Meredith 966 48 MGM Mirage (B)* 3,154 120 Michaels Stores 3,681 155 Mohawk Industries* 1,395 116 MSC Industrial Direct, Cl A 844 26 Neiman-Marcus Group, Cl A 1,125 109 New York Times, Cl A 3,902 122 Newell Rubbermaid 7,347 167 Nike, Cl B 4,367 359 Nordstrom 2,896 177 NTL* 1,782 115 NVR (B)* 140 106 O'Reilly Automotive* 1,253 70 Office Depot* 8,267 163 OfficeMax 2,150 65 Omnicom Group 5,052 414 Outback Steakhouse 1,580 70 Pacific Sunwear of California* 2,085 44 Petco Animal Supplies* 1,125 34 Petsmart (B) 3,875 123 Pier 1 Imports (B) 2,316 39 Polaris Industries (B) 1,172 62 Polo Ralph Lauren (B) 1,046 41 Pulte Homes 2,808 215 Radio One, Cl D* 2,020 25 RadioShack 4,223 106 Reebok International (B) 1,387 56 Regal Entertainment Group, Cl A (B) 1,188 24 Regis 1,185 45 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Rent-A-Center* 1,780 $ 42 Ross Stores 4,029 114 Ruby Tuesday (B) 1,765 45 Ryland Group (B) 1,371 94 Saks 3,536 61 Sears Holdings (B)* 2,830 415 Sherwin-Williams 3,190 142 Sirius Satellite Radio (B)* 35,300 213 Snap-On 1,491 51 Standard-Pacific 917 73 Stanley Works 1,822 81 Staples 19,940 429 Starbucks (B)* 10,596 580 Starwood Hotels & Resorts Worldwide 5,532 310 Station Casinos 1,198 78 Talbots 413 12 Target 24,395 1,310 Tiffany 3,929 122 Timberland, Cl A (B)* 1,146 42 Time Warner* 117,191 2,039 TJX 13,275 304 Toll Brothers* 1,292 120 Toys "R" Us* 5,680 149 Tribune (B) 6,648 241 TRW Automotive Holdings* 600 12 UnitedGlobalCom, Cl A* 9,177 84 Univision Communications, Cl A (B)* 6,130 163 Urban Outfitters* 1,200 64 VF 2,274 128 Viacom, Cl B 38,227 1,311 Walt Disney 54,831 1,505 Washington Post, Cl B 147 122 Wendy's International 3,051 138 Westwood One* 1,983 39 Whirlpool (B) 1,830 126 Williams-Sonoma* 2,421 95 Wynn Resorts* 1,124 53 XM Satellite Radio Holdings, Cl A (B)* 4,286 138 Yum! Brands 7,734 397 -------- 37,818 -------- CONSUMER STAPLES -- 9.4% Alberto-Culver 1,824 81 Albertson's (B) 9,832 206 Altria Group 54,791 3,679 Anheuser-Busch 21,488 1,007 Aramark, Cl B (B) 2,678 70 Archer-Daniels-Midland 15,564 309 Avon Products 12,609 501 Brown-Forman, Cl B 1,464 87 Campbell Soup (B) 6,139 191 Church & Dwight 1,632 59 Clorox 2,895 169 - -------------------------------------------------------------------------------- 30 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Coca-Cola 56,355 $ 2,515 Coca-Cola Enterprises 6,205 136 Colgate-Palmolive 14,218 711 ConAgra Foods 14,122 369 Constellation Brands, Cl A* 4,918 137 Costco Wholesale 12,265 557 CVS 10,617 582 Dean Foods* 3,878 151 Del Monte Foods* 4,825 50 Energizer Holdings* 1,935 122 Estee Lauder, Cl A 2,877 112 General Mills 7,747 384 Gillette 26,811 1,414 Hershey 4,624 297 HJ Heinz 9,410 342 Hormel Foods 1,939 57 JM Smucker 1,457 73 Kellogg 6,520 297 Kimberly-Clark 13,395 862 Kraft Foods, Cl A 7,129 231 Kroger* 19,707 331 Loews--Carolina Group 1,511 45 McCormick 3,677 124 Molson Coors Brewing, Cl B 1,131 66 NBTY* 1,511 34 Pepsi Bottling Group 4,098 116 PepsiAmericas 1,912 46 PepsiCo 45,607 2,566 Pilgrim's Pride (B) 351 12 Procter & Gamble (B) 68,679 3,788 Reynolds American (B) 4,009 332 Rite Aid (B)* 11,114 44 Safeway* 11,930 263 Sara Lee 21,120 429 Smithfield Foods* 2,275 68 Supervalu 3,645 119 Sysco (B) 17,087 635 Tootsie Roll Industries 625 19 Tyson Foods, Cl A 5,884 109 UST 4,403 196 Wal-Mart Stores 68,521 3,236 Walgreen 27,375 1,241 Whole Foods Market (B) 1,745 208 WM Wrigley Jr 4,196 286 -------- 30,071 -------- ENERGY -- 7.7% Amerada Hess 2,070 192 Anadarko Petroleum 6,330 479 Apache 8,691 511 Ashland 1,882 129 Baker Hughes 8,902 411 BJ Services (B) 4,301 217 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Burlington Resources 10,602 $ 537 Chesapeake Energy (B) 8,398 172 ChevronTexaco 57,177 3,075 ConocoPhillips 18,324 1,976 Cooper Cameron* 1,400 83 Devon Energy 12,812 588 Diamond Offshore Drilling (B) 1,595 75 El Paso 17,137 177 ENSCO International 3,978 132 EOG Resources (B) 6,231 311 Exxon Mobil 174,727 9,820 FMC Technologies* 1,780 56 Grant Prideco* 3,347 80 Halliburton 13,502 577 Kerr-McGee 3,862 285 Kinder Morgan 2,557 199 Marathon Oil 9,231 448 Murphy Oil 2,186 214 National Oilwell Varco* 4,462 201 Newfield Exploration* 3,362 129 Noble Energy 2,368 176 NRG Energy* 2,488 89 Occidental Petroleum 10,453 764 Patterson-UTI Energy 4,357 115 Pioneer Natural Resources 3,851 155 Pogo Producing 1,669 82 Premcor 1,048 71 Pride International* 3,756 85 Rowan* 2,759 76 Smith International 2,775 163 Sunoco 1,916 197 Tidewater 1,642 57 Unocal 7,043 401 Valero Energy 6,880 472 Western Gas Resources 1,449 46 Williams 14,873 274 XTO Energy 9,832 306 -------- 24,603 -------- FINANCIALS -- 20.6% A.G. Edwards (B) 2,109 87 Aflac 13,591 565 Alleghany (B)* 128 36 Allied Capital (B) 3,486 96 Allmerica Financial* 1,453 51 Allstate 18,774 1,093 AMB Property+ 2,144 86 AMBAC Financial Group 2,898 209 American Capital Strategies (B) 2,336 82 American Express 30,148 1,623 American Financial Group 915 30 American International Group 61,392 3,410 American National Insurance 222 26 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 31 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Index Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- AmeriCredit (B)* 4,028 $ 100 Ameritrade Holding* 6,243 93 AmSouth Bancorp (B) 9,416 251 Annaly Mortgage Management+ (B) 3,111 59 AON (B) 8,456 211 Apartment Investment & Management, Cl A+ 2,441 91 Archstone-Smith Trust+ 5,241 193 Arden Realty+ 1,731 59 Arthur J Gallagher 2,468 68 Associated Banccorp 3,432 115 Assurant 2,100 74 Astoria Financial 3,042 84 AvalonBay Communities+ 1,915 143 Bank of America 108,940 5,046 Bank of Hawaii 1,456 71 Bank of New York 20,777 599 BB&T (B) 14,822 592 Bear Stearns 3,028 300 BlackRock, Cl A 485 38 BOK Financial* 475 21 Boston Properties+ (B) 2,183 146 BRE Properties, Cl A+ 1,320 51 Brown & Brown 1,412 63 Camden Property Trust+ 1,304 67 Capital One Financial (B) 6,813 514 CapitalSource (B)* 1,787 34 Capitol Federal Financial (B) 527 17 Catellus Development+ 2,709 79 CBL & Associates Properties+ (B) 603 49 Centerpoint Properties Trust+ 1,447 60 Charles Schwab 26,630 302 Chicago Mercantile Exchange Holdings 883 191 Chubb (B) 5,070 427 Cincinnati Financial 4,161 164 CIT Group 5,660 240 Citigroup 138,165 6,509 City National 1,098 78 CNA Financial (B)* 745 21 Colonial BancGroup 4,143 92 Comerica 4,631 259 Commerce Bancorp (B) 3,693 102 Commerce Bancshares (B) 1,663 81 Compass Bancshares 3,274 146 Conseco* 3,877 78 Countrywide Financial 15,859 589 Crescent Real Estate Equity EQT+ 2,004 37 Cullen/Frost Bankers 1,409 63 Developers Diversified Realty+ 2,900 132 Doral Financial (B) 2,226 26 Duke Realty+ (B) 3,658 113 E*Trade Financial* 9,774 121 Eaton Vance 3,692 90 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Equity Office Properties Trust+ 10,787 $ 350 Equity Residential+ 7,489 269 Erie Indemnity, Cl A 747 39 Fannie Mae 25,893 1,534 Federal Realty Investment Trust+ 1,375 76 Federated Investors, Cl B 2,158 64 Fidelity National Financial 4,255 153 Fifth Third Bancorp (B) 12,623 538 First American 2,361 91 First Horizon National (B) 3,312 140 First Marblehead* 517 23 FirstMerit 2,232 57 Forest City Enterprises, Cl A 784 50 Franklin Resources 4,270 308 Freddie Mac 18,395 1,196 Fremont General 1,743 37 Friedman Billings Ramsey Group, Cl A+ (B) 3,635 47 Fulton Financial (B) 3,197 69 General Growth Properties+ (B) 6,350 247 Genworth Financial, Cl A 3,876 112 Golden West Financial 6,665 417 Goldman Sachs Group 8,742 852 Hartford Financial Services Group (B) 7,804 584 HCC Insurance Holdings 1,735 68 Health Care+ 1,383 50 Health Care Property Investors+ (B) 3,489 95 Hibernia, Cl A 4,149 133 Hospitality Properties Trust+ (B) 1,766 78 Host Marriott+ (B) 9,232 155 HRPT Properties Trust+ 5,285 63 Hudson City Bancorp (B) 1,681 58 Hudson United Bancorp 1,222 42 Huntington Bancshares 6,134 143 Independence Community Bank 2,152 81 IndyMac Bancorp 1,599 66 Instinet Group* 3,479 18 International Bancshares 949 34 Investors Financial Services 1,755 73 iStar Financial+ 2,954 124 Janus Capital Group (B) 6,120 94 Jefferies Group (B) 1,357 48 Jefferson-Pilot 3,722 188 JPMorgan Chase 95,202 3,403 Keycorp 10,966 359 Kimco Realty+ 2,598 150 Legg Mason 2,799 230 Lehman Brothers Holdings 7,399 682 Leucadia National 2,095 84 Liberty Property Trust+ (B) 2,403 99 Lincoln National 4,659 212 Loews 3,971 299 M&T Bank (B) 2,007 205 - -------------------------------------------------------------------------------- 32 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Macerich+ 1,544 $ 97 Mack-Cali Realty+ 1,598 70 Markel* 228 78 Marsh & McLennan 13,985 406 Marshall & Ilsley 5,938 258 MBIA (B) 3,760 210 MBNA 30,351 640 Mellon Financial 11,345 315 Mercantile Bankshares 2,222 116 Mercury General 696 38 Merrill Lynch 25,599 1,389 Metlife 10,746 479 MGIC Investment 2,626 161 Mills+ (B) 1,412 81 MoneyGram International 2,406 45 Moody's 6,714 290 Morgan Stanley 29,369 1,438 National City 14,975 518 Nationwide Financial Services, Cl A 1,461 56 New Plan Excel Realty Trust+ 2,695 73 New York Community Bancorp (B) 7,070 129 NewAlliance Bancshares 2,493 34 North Fork Bancorporation 11,537 314 Northern Trust 5,220 240 Nuveen Investments, Cl A (B) 1,770 64 Odyssey Re Holdings (B) 384 9 Old Republic International 4,791 119 Pan Pacific Retail Properties+ 1,011 65 Peoples Bank 1,589 45 Plum Creek Timber+ (B) 4,889 171 PMI Group 2,456 93 PNC Financial Services Group 7,734 423 Popular 7,075 167 Principal Financial Group 8,006 319 Progressive 5,350 514 Prologis+ 4,856 198 Protective Life 1,809 73 Providian Financial (B)* 7,745 138 Prudential Financial 14,108 893 Public Storage+ 2,190 132 Radian Group 2,526 116 Raymond James Financial 1,714 46 Rayonier+ 1,342 70 Reckson Associates Realty+ 2,092 66 Regency Centers+ 1,590 89 Regions Financial (B) 12,320 415 Reinsurance Group of America 799 37 Safeco 3,400 183 SEI Investments (F) 1,723 60 Shurgard Storage Centers, Cl A+ 1,246 54 Simon Property Group+ 4,477 308 Sky Financial Group 2,822 81 SL Green Realty+ 1,032 64 SLM 11,730 566 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- South Financial Group 1,800 $ 49 Sovereign Bancorp 9,814 219 St. Joe (B) 1,444 114 St. Paul Travelers 17,826 675 Stancorp Financial Group 721 54 State Street 8,977 431 Student Loan 102 22 SunTrust Banks 8,763 645 Synovus Financial (B) 8,099 235 T Rowe Price Group (B) 2,898 173 TCF Financial 3,626 94 TD Banknorth (B) 2,313 69 Thornburg Mortgage+ (B) 2,443 74 Torchmark 2,971 157 Toronto-Dominion Bank 1 -- Transatlantic Holdings 655 37 Trizec Properties+ 2,349 46 UCBH Holdings 2,422 41 UnionBanCal 1,447 91 United Dominion Realty Trust+ 3,582 83 Unitrin 1,260 63 UnumProvident (B) 7,743 142 US Bancorp 50,641 1,485 Valley National Bancorp 2,686 64 Ventas+ 2,210 63 Vornado Realty Trust+ (B) 2,564 202 W Holding 3,009 27 Wachovia 42,969 2,181 Waddell & Reed Financial, Cl A 2,170 42 Washington Federal 2,263 52 Washington Mutual 23,270 961 Webster Financial 1,323 62 Weingarten Realty Investors+ 2,067 79 Wells Fargo 45,087 2,724 Wesco Financial 41 15 Westcorp 532 26 WFS Financial* 207 10 Whitney Holding 1,521 48 Wilmington Trust 1,663 60 WR Berkley 2,742 97 Zions Bancorporation 2,388 169 -------- 66,064 -------- HEALTH CARE -- 13.7% Abbott Laboratories 41,671 2,010 Accredo Health* 1,373 62 Aetna 8,144 635 Affymetrix (B)* 1,721 92 Allergan 3,511 271 American Pharmaceutical Partners (B)* 564 25 AmerisourceBergen 2,905 188 Amgen* 34,618 2,166 Amylin Pharmaceuticals (B)* 2,830 45 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 33 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Index Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Andrx (B)* 1,901 $ 38 Applera--Applied Biosystems Group (B) 5,435 116 Barr Pharmaceuticals* 2,358 120 Bausch & Lomb (B) 1,368 107 Baxter International 16,379 604 Beckman Coulter 1,626 114 Becton Dickinson (B) 6,769 389 Biogen Idec (B)* 9,081 355 Biomet 6,801 256 Boston Scientific* 17,674 479 Bristol-Myers Squibb 51,951 1,318 C.R. Bard 2,790 190 Cardinal Health 11,501 666 Caremark Rx* 12,389 553 Celgene* 4,512 191 Cephalon (B)* 1,448 61 Charles River Laboratories International* 1,575 76 Chiron (B)* 2,933 110 Cigna 3,588 349 Community Health Systems (B)* 1,803 66 Cooper (B) 1,058 70 Covance* 1,658 72 Coventry Health Care (B)* 2,811 196 Cytyc* 2,903 68 Dade Behring Holdings* 1,121 75 DaVita (B)* 2,577 119 Dentsply International 2,108 120 Edwards Lifesciences (B)* 1,507 69 Eli Lilly 26,044 1,518 Endo Pharmaceuticals Holdings* 1,297 26 Eon Labs* 765 23 Express Scripts* 1,656 153 Eyetech Pharmaceuticals (B)* 216 3 Fisher Scientific International (B)* 3,152 197 Forest Laboratories* 9,829 379 Gen-Probe* 1,327 52 Genentech* 11,851 939 Genzyme* 6,543 408 Gilead Sciences* 12,036 491 Guidant 8,381 619 HCA 11,344 613 Health Management Associates, Cl A 6,414 162 Health Net* 2,930 100 Henry Schein* 2,292 92 Hillenbrand Industries (B) 1,424 72 Hospira* 4,189 160 Humana* 4,326 157 ICOS* 1,404 30 Idexx Laboratories* 949 55 ImClone Systems (B)* 1,697 56 IMS Health 6,247 153 Inamed* 954 59 Invitrogen (B)* 1,370 109 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- IVAX (B)* 5,293 $ 104 Johnson & Johnson 79,311 5,322 Kinetic Concepts* 685 44 King Pharmaceuticals* 6,419 61 Laboratory of America Holdings (B)* 3,780 183 Lincare Holdings (B)* 2,570 113 Manor Care 2,527 98 Martek Biosciences (B)* 700 26 McKesson (B) 7,779 313 Medco Health Solutions* 7,244 362 Medicis Pharmaceutical, Cl A (B) 1,472 42 Medimmune* 6,652 176 Medtronic 32,388 1,741 Merck 59,370 1,926 Mettler Toledo International* 1,136 56 MGI Pharma (B)* 1,916 45 Millennium Pharmaceuticals* 7,816 65 Millipore* 1,286 66 Mylan Laboratories (B) 7,172 118 Nektar Therapeutics (B)* 2,345 43 Neurocrine Biosciences* 952 36 Omnicare (B) 2,725 104 OSI Pharmaceuticals* 1,259 47 Pacificare Health Systems (B)* 2,303 145 Patterson (B)* 3,242 147 PerkinElmer 3,334 64 Pfizer 203,863 5,688 Pharmaceutical Product Development (B)* 1,323 64 Protein Design Labs (B)* 3,127 60 Quest Diagnostics 2,167 228 Renal Care Group* 1,831 85 Resmed (B)* 900 56 Respironics* 920 62 Schering-Plough 39,329 767 Sepracor (B)* 2,810 171 St. Jude Medical* 9,416 378 Stryker 7,647 372 Tenet Healthcare* 12,466 151 Thermo Electron* 4,642 122 Triad Hospitals (B)* 2,270 115 UnitedHealth Group 33,994 1,651 Universal Health Services, Cl B 1,333 78 Varian Medical Systems* 3,630 137 VCA Antech* 1,747 43 Waters (B)* 3,387 132 Watson Pharmaceuticals* 2,792 84 WellChoice* 540 31 WellPoint* 7,863 1,046 Wyeth 35,629 1,545 Zimmer Holdings* 6,521 499 -------- 44,079 -------- - -------------------------------------------------------------------------------- 34 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- INDUSTRIALS -- 10.7% 3M 20,897 $ 1,602 AGCO (B)* 2,394 44 Alliant Techsystems (B)* 971 70 Allied Waste Industries (B)* 7,205 56 American Power Conversion 4,535 115 American Standard 4,948 212 Ametek 1,765 68 AMR (B)* 4,400 57 Apollo Group, Cl A (B)* 3,880 305 Avery Dennison 2,924 153 BearingPoint (B)* 3,976 26 Boeing 22,527 1,439 Briggs & Stratton 1,419 48 Brink's 1,538 48 Burlington Northern Santa Fe 9,911 490 C.H. Robinson Worldwide 2,297 131 Career Education (B)* 2,595 90 Carlisle 833 58 Caterpillar 9,136 860 Cendant 27,256 578 ChoicePoint* 2,271 89 Cintas 3,301 133 CNF 1,323 59 Copart* 1,813 45 Corinthian Colleges* 2,527 39 Corporate Executive Board 1,187 83 Crane 1,288 34 CSX 5,738 239 Cummins (B) 1,102 75 Danaher 6,330 349 Deere 6,653 440 Deluxe 1,372 55 DeVry* 1,480 30 Donaldson 1,972 63 Dover 5,400 205 Eaton 4,025 241 Education Management* 1,856 60 Emerson Electric 11,273 749 Equifax (B) 3,522 122 Expeditors International Washington 2,792 142 Fastenal (B) 1,599 93 FedEx (B) 7,982 714 Fluor (B) 2,175 125 General Dynamics 5,319 574 General Electric 281,975 10,286 Goodrich 3,145 132 Graco 1,824 64 H&R Block (B) 4,408 220 Harsco 1,196 69 Herman Miller 1,893 55 Hewitt Associates, Cl A* 1,063 27 HNI 1,500 77 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Honeywell International 22,958 $ 832 Hubbell, Cl B (B) 1,592 72 Hughes Supply 1,823 47 IKON Office Solutions 3,176 31 Illinois Tool Works 6,671 563 Iron Mountain* 2,868 82 ITT Educational Services (B)* 1,221 55 ITT Industries 2,476 235 Jacobs Engineering Group* 1,431 75 JB Hunt Transport Services (B) 2,920 59 JetBlue Airways (B)* 2,396 52 L-3 Communications Holdings 2,756 195 Lafarge North America (B) 839 51 Laureate Education* 989 46 Lockheed Martin 10,014 650 Manpower 2,420 96 Masco 11,706 375 Monster Worldwide* 2,581 68 Navistar International* 1,607 49 Norfolk Southern 10,478 334 Northrop Grumman 9,607 535 Oshkosh Truck 949 76 Paccar 4,689 332 Pall 3,258 95 Parker Hannifin 3,183 192 Pentair 2,811 125 PHH* 1,331 32 Pitney Bowes 6,178 276 Precision Castparts 1,728 134 Raytheon 12,055 472 Republic Services 3,857 137 Robert Half International 3,862 96 Rockwell Automation 4,968 255 Rockwell Collins 4,740 234 Roper Industries 1,100 77 RR Donnelley & Sons 5,812 193 Ryder System 1,706 63 Service International 9,291 70 ServiceMaster 7,440 97 SIRVA* 500 4 Southwest Airlines 21,119 307 SPX 2,065 92 Steelcase, Cl A 1,403 18 Stericycle* 1,113 55 Teleflex 940 53 Textron 3,149 243 Timken 1,729 41 Union Pacific 6,925 464 United Defense Industries 1,250 93 United Parcel Service, Cl B 15,269 1,125 United Technologies 13,732 1,465 Viad 526 15 Waste Management 15,514 458 Weight Watchers International* 1,046 51 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 35 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Index Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- WW Grainger 2,053 $ 112 Yellow Roadway (B)* 1,623 86 -------- 34,278 -------- INFORMATION TECHNOLOGY -- 15.4% 3Com* 10,696 39 Activision* 4,810 76 Acxiom 2,560 47 Adobe Systems (B) 12,760 422 Advanced Micro Devices (B)* 10,531 173 Affiliated Computer Services, Cl A (B)* 3,270 169 Agere Systems* 4,614 63 Agilent Technologies* 12,850 308 Akamai Technologies* 2,918 41 Alliance Data Systems (B)* 1,210 46 Altera* 9,953 221 American Tower, Cl A* 5,568 100 Amkor Technology (B)* 2,401 8 Amphenol, Cl A 1,808 77 Analog Devices 10,045 372 Andrew (B)* 4,379 58 Apple Computer (B)* 21,486 853 Applied Materials* 45,046 739 Applied Micro Circuits* 7,514 22 Arrow Electronics* 2,989 83 Ask Jeeves (B)* 1,596 48 Atmel* 10,166 30 Autodesk 6,351 251 Automatic Data Processing 15,778 691 Avaya* 12,094 111 Avid Technology (B)* 872 51 Avnet* 3,029 63 Avocent* 1,366 38 AVX (B) 1,424 17 BEA Systems* 9,519 80 BMC Software* 6,353 108 Broadcom, Cl A (B)* 6,989 248 Cadence Design Systems (B)* 7,207 101 CDW 1,653 96 Ceridian* 3,775 72 Certegy 1,663 62 Checkfree (B)* 2,154 80 Ciena* 14,989 33 Cisco Systems* 180,648 3,501 Citrix Systems* 4,450 112 Cogent* 543 11 Cognizant Technology Solutions, Cl A* 3,453 166 Computer Associates International (B) 12,459 340 Computer Sciences* 5,014 232 Compuware* 10,463 72 Comverse Technology (B)* 5,089 120 Conexant Systems* 11,207 16 Convergys* 3,669 50 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Corning (B)* 36,671 $ 575 Cree (B)* 1,922 58 Cypress Semiconductor* 3,933 51 Dell* 67,639 2,698 Diebold 1,922 96 Dolby Laboratories, Cl A* 1,095 22 DST Systems (B)* 1,913 92 Dun & Bradstreet* 1,915 118 Electronic Arts (B)* 7,988 420 Electronic Data Systems 13,605 268 EMC* 64,666 909 Fair Isaac 1,939 66 Fairchild Semiconductor International* 3,040 43 First Data 21,427 811 Fiserv* 5,212 224 Flir Systems* 1,776 48 Foundry Networks* 3,169 29 Freescale Semiconductor, Cl B* 10,395 210 Global Payments (B) 777 54 Google, Cl A* 544 151 Harris 3,440 99 Hewlett-Packard 77,364 1,741 Ingram Micro, Cl A* 3,159 50 Integrated Circuit Systems (B)* 1,909 40 Intel 172,805 4,654 International Business Machines 45,028 3,402 International Rectifier (B)* 1,804 86 Intersil, Cl A 3,810 71 Intuit* 4,572 198 Jabil Circuit* 4,261 124 Jack Henry & Associates (B) 1,642 29 JDS Uniphase (B)* 36,420 56 Juniper Networks* 14,164 363 Kla-Tencor (B)* 5,255 239 Lam Research* 3,525 108 Lexmark International, Cl A* 3,473 238 Linear Technology 8,270 310 LSI Logic* 10,368 76 Lucent Technologies (B)* 114,541 322 Macromedia* 2,096 93 Maxim Integrated Products 8,612 339 Maxtor* 6,334 35 McAfee* 4,376 125 MEMC Electronic Materials (B)* 2,238 31 Mercury Interactive (B)* 2,194 99 Microchip Technology 5,556 165 Micron Technology (B)* 15,459 170 Microsoft 245,139 6,325 Molex 3,534 94 Motorola 62,636 1,088 National Instruments 1,436 33 National Semiconductor 9,581 193 NAVTEQ (B)* 1,100 42 NCR* 4,974 182 - -------------------------------------------------------------------------------- 36 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- NetFlix (B)* 800 $ 11 Network Appliance* 8,730 251 Novell* 10,248 60 Novellus Systems (B)* 3,630 97 Nvidia* 4,640 126 Oracle* 100,910 1,294 Paychex 8,832 255 Pixar (B)* 1,286 68 Plantronics 1,277 44 PMC - Sierra* 4,905 43 Polycom* 2,531 43 QLogic* 2,442 78 Qualcomm 43,294 1,613 Rambus (B)* 2,168 33 Red Hat (B)* 4,349 55 Reynolds & Reynolds, Cl A 1,637 45 Sabre Holdings, Cl A 3,580 72 SanDisk* 4,836 126 Sanmina-SCI* 14,017 72 Scientific-Atlanta 4,049 135 Semtech* 2,053 37 Siebel Systems* 11,132 103 Silicon Laboratories* 981 27 Solectron (B)* 24,097 88 Storage Technology* 2,870 93 Sun Microsystems* 88,891 339 Sungard Data Systems* 7,754 269 Sybase (B)* 2,689 55 Symantec (B)* 18,962 429 Symbol Technologies 6,324 73 Synopsys* 4,213 76 Tech Data* 1,550 56 Tektronix 2,433 55 Tellabs* 11,933 98 Teradyne (B)* 5,201 68 Texas Instruments (B) 46,253 1,278 TIBCO Software* 5,516 35 Total System Services (B) 969 24 Unisys* 8,532 62 Utstarcom (B)* 2,346 17 VeriSign* 7,251 235 Veritas Software* 11,429 284 Vishay Intertechnology* 4,813 62 WebMD (B)* 8,942 84 Western Digital* 5,568 84 Xerox (B)* 25,549 347 Xilinx 9,215 256 Yahoo!* 30,586 1,138 Zebra Technologies, Cl A (B)* 1,467 63 -------- 49,236 -------- MATERIALS -- 3.0% Air Products & Chemicals 6,074 366 Alcoa 23,231 630 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Arch Coal 1,693 $ 82 Ball 3,014 113 Bemis 2,774 75 Bowater (B) 1,478 46 Cabot 1,673 49 Celanese, Cl A* 1,824 28 Consol Energy 2,360 113 Dow Chemical 25,014 1,133 E.I. Du Pont de Nemours 26,725 1,243 Eastman Chemical 2,071 122 Ecolab 4,921 159 Engelhard 3,190 94 Florida Rock Industries (B) 765 50 Freeport-McMoRan Copper & Gold, Cl B (B) 4,027 142 Georgia-Pacific 6,815 226 Huntsman* 1,990 38 International Flavors & Fragrances 2,222 82 International Paper 12,974 418 Louisiana-Pacific 2,846 72 Lubrizol 1,800 71 Lyondell Chemical 5,221 124 Martin Marietta Materials 1,252 76 Massey Energy (B) 2,013 81 MeadWestvaco 5,375 154 Monsanto 7,097 405 Nalco Holding* 1,167 21 Neenah Paper (B) 400 12 Newmont Mining 10,751 400 Nucor (B) 4,220 223 Owens-Illinois* 3,021 78 Packaging of America (B) 1,499 33 Pactiv* 4,132 94 Peabody Energy 3,428 164 Phelps Dodge 2,499 218 PPG Industries 4,586 300 Praxair 8,685 407 Rohm & Haas 4,278 200 RPM International 2,969 52 Scotts Miracle-Gro, Cl A* 527 37 Sealed Air* 2,268 117 Sigma-Aldrich 1,862 112 Smurfit-Stone Container* 6,703 73 Sonoco Products 2,612 70 Southern Peru Copper (B) 409 19 Temple-Inland 2,900 104 United States Steel 3,032 121 Valspar 1,332 63 Vulcan Materials 2,717 163 Weyerhaeuser 6,399 410 Worthington Industries 1,629 27 -------- 9,710 -------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 37 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Index Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 3.0% ADC Telecommunications* 2,967 $ 54 Adtran 1,731 38 Alltel (B) 8,235 479 AT&T 21,217 399 BellSouth 49,012 1,312 CenturyTel 3,729 122 Citizens Communications (B) 9,015 123 Crown Castle International* 5,018 89 IDT, Cl B (B)* 1,749 24 Level 3 Communications (B)* 18,416 38 Nextel Communications, Cl A* 27,430 828 Nextel Partners, Cl A (B)* 3,299 78 NII Holdings* 1,510 90 Qwest Communications International (B)* 39,539 155 SBC Communications 88,486 2,069 Spectrasite* 1,049 67 Sprint (B) 38,111 903 Telephone & Data Systems (B) 1,319 51 Telephone & Data Systems, Special Shares* 1,319 50 US Cellular* 431 20 Verizon Communications 74,016 2,619 West* 498 18 Western Wireless, Cl A* 2,347 93 -------- 9,719 -------- UTILITIES -- 3.5% AES* 17,030 254 AGL Resources 2,166 76 Allegheny Energy (B)* 4,582 111 Allete 790 38 Alliant Energy 2,940 81 Ameren 5,193 284 American Electric Power (B) 10,574 377 Aqua America (B) 2,565 70 Centerpoint Energy (B) 7,329 90 Cinergy 5,117 211 Consolidated Edison 6,440 293 Constellation Energy Group 4,848 259 Dominion Resources 9,165 644 DPL 3,209 81 DTE Energy 4,636 220 Duke Energy (B) 24,447 672 Dynegy, Cl A (B)* 7,511 35 Edison International 8,708 320 Energy East 4,120 115 Entergy 5,693 409 Equitable Resources 1,656 105 Exelon 17,661 827 FirstEnergy 8,815 391 FPL Group 10,612 431 Great Plains Energy (B) 2,050 65 Hawaiian Electric Industries 2,146 55 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- KeySpan 4,266 $ 170 MDU Resources Group 3,121 90 National Fuel Gas 1,921 54 NiSource 7,037 170 Northeast Utilities 3,407 68 NSTAR 1,408 82 OGE Energy (B) 2,268 63 Oneok (B) 2,696 83 Pepco Holdings 5,027 113 PG&E (B) 10,110 362 Pinnacle West Capital 2,760 122 PPL 5,049 290 Progress Energy (B) 6,591 292 Public Service Enterprise Group (B) 6,323 351 Puget Energy 2,661 61 Questar 2,199 139 Reliant Energy* 7,672 94 SCANA 2,987 126 Sempra Energy 5,455 216 Southern 19,706 669 TECO Energy 5,663 100 TXU 6,407 514 UGI 2,752 73 Vectren (B) 1,991 54 Westar Energy 2,292 53 Wisconsin Energy 3,140 114 WPS Resources 1,002 55 Xcel Energy (B) 10,627 196 -------- 11,288 -------- Total Common Stock (Cost $257,183) ($ Thousands) 316,866 -------- CORPORATE OBLIGATIONS (C) (E) -- 5.3% FINANCIALS -- 5.3% ASIF Global Financing XV (G) 3.020%, 09/02/05 $ 54 54 Allstate Life Global Funding II MTN (G) 3.080%, 06/15/06 266 266 American General Finance (G) 3.090%, 06/15/06 521 521 Bear Stearns EXL 3.100%, 06/15/06 1,030 1,030 CCN Bluegrass (G) 3.170%, 02/21/06 376 376 CIT Group MTN 3.260%, 05/12/06 1,446 1,446 3.199%, 07/29/05 66 66 3.163%, 04/19/06 145 145 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 289 289 Countrywide Home Loans MTN, Ser A 3.509%, 03/21/06 474 474 - -------------------------------------------------------------------------------- 38 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 $ 174 $ 174 3.152%, 06/23/05 353 353 3.040%, 11/30/05 659 659 2.810%, 01/31/06 127 127 Dekabank (G) 3.206%, 05/19/06 1,070 1,070 Five Finance MTN (G) 3.100%, 09/22/05 821 821 Harrier Finance Funding MTN (G) 3.034%, 09/15/05 168 168 Harrier Finance Funding MTN, Ser 1 (G) 3.016%, 06/15/05 503 503 Irish Life & Permanent MTN, Ser X (G) 3.101%, 06/22/06 538 538 Jackson National Life Funding (G) 3.064%, 05/01/06 1,272 1,272 K2 MTN (G) 2.995%, 12/12/05 35 35 Lakeside Funding 3.120%, 06/08/05 289 289 Liberty Lighthouse US Capital (G) 3.118%, 05/10/06 578 578 Morgan Stanley EXL 3.089%, 05/04/06 202 202 Morgan Stanley EXL, Ser S 3.085%, 06/02/06 289 289 Nationwide Building Society (G) 3.090%, 01/06/06 578 578 3.083%, 10/28/05 289 289 Northern Rock (G) 3.099%, 02/03/06 596 596 Pacific Life Global Funding (G) 3.080%, 06/13/06 434 434 Premium Asset Trust, Ser 2004-01 (G) 3.100%, 02/06/06 428 428 Premium Asset Trust, Ser 2004-10 (G) 3.100%, 04/14/06 810 810 SLM EXL, Ser S (G) 3.090%, 05/15/06 636 636 SLM MTN, Ser X (G) 3.090%, 06/20/06 1,157 1,157 White Pine Finance MTN, Ser 1 (G) 3.071%, 11/01/05 254 254 -------- Total Corporate Obligations (Cost $16,927) ($ Thousands) 16,927 -------- ASSET-BACKED SECURITIES (C) (E) (G) -- 2.7% AUTOMOTIVE -- 0.5% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 1,399 1,399 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Drivetime Auto Owner Trust, Ser 2005-A, Cl A1 3.110%, 03/15/06 $ 138 $ 138 -------- 1,537 -------- MORTGAGE RELATED SECURITIES -- 2.2% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 370 370 Blue Heron Funding, Ser 6A, Cl A1 3.129%, 06/21/05 116 116 Blue Heron Funding, Ser 9A, Cl A1 3.120%, 02/22/06 578 578 CCN Independence IV 3.160%, 10/17/05 318 318 3.160%, 01/17/06 203 203 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 333 333 Commodore, Ser 2003-2A, Cl A1MM 3.100%, 12/12/38 266 266 Duke Funding, Ser 2004-6B, Cl A1S1 2.680%, 04/10/06 434 434 Harwood Street Funding I, Ser 2004-1A, Cl NOTE 3.140%, 09/20/05 821 821 Harwood Street Funding II, Ser 2005-1A, Cl NOTE 3.141%, 06/25/06 578 578 Orchid Structured Finance, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 565 565 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 930 930 RMAC, Ser 2004-NS2A, Cl A1 3.080%, 06/13/05 103 103 RMAC, Ser 2004-NS3A, Cl A1 3.090%, 06/12/05 243 243 Saturn Ventures II 3.150%, 08/08/05 642 642 TIAA Real Estate, Ser 2003 1A, Cl A1 3.131%, 03/28/06 374 374 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 145 145 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC 3.030%, 09/15/05 104 104 -------- 7,123 -------- Total Asset-Backed Securities (Cost $8,660) ($ Thousands) 8,660 -------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 39 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Large Cap Index Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- COMMERCIAL PAPER (C) (D) -- 1.2% FINANCIALS -- 1.2% Ajax Bambino Funding 3.119%, 07/06/05 $ 578 $ 577 Altimira Funding 3.004%, 06/16/05 75 75 Beethoven Funding 3.109%, 07/05/05 289 288 3.013%, 06/13/05 291 290 Brahms Funding 3.000%, 06/02/05 746 746 Capital One Multi-Asset Funding 3.025%, 06/20/05 231 231 3.002%, 06/07/05 202 202 Cobbler Funding 3.057%, 06/28/05 106 106 Cre-8 Funding 3.106%, 06/23/05 202 202 Golden Fish 3.066%, 06/22/05 301 300 3.065%, 06/20/05 188 188 3.055%, 06/21/05 87 87 3.053%, 06/14/05 233 232 Rams Funding 3.121%, 06/06/05 289 289 -------- Total Commercial Paper (Cost $3,813) ($ Thousands) 3,813 -------- CASH EQUIVALENT -- 0.9% SEI Daily Income Trust, Prime Obligation Fund, Cl A++ 3,079,256 3,079 -------- Total Cash Equivalent (Cost $3,079) ($ Thousands) 3,079 -------- MASTER NOTES (C) -- 0.7% Bank of America Master Notes 3.143%, 06/01/05 1,446 1,446 Bear Stearns Master Notes 3.234%, 06/01/05 694 694 -------- Total Master Notes (Cost $2,140) ($ Thousands) 2,140 -------- CERTIFICATES OF DEPOSIT (C) (E) -- 0.4% U.S. Trust 3.215%, 09/12/05 578 578 Washington Mutual Bank 3.270%, 08/18/05 683 683 -------- Total Certificates of Deposit (Cost $1,261) ($ Thousands) 1,261 -------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- U.S. TREASURY OBLIGATION -- 0.1% U.S. Treasury Bills (A) 2.783%, 06/23/05 $ 535 $ 534 -------- Total U.S. Treasury Obligation (Cost $534) ($ Thousands) 534 -------- REPURCHASE AGREEMENTS (C) -- 1.8% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $910,255 (collateralized by U.S. Government Obligation, par value $947,332, 0.000%, 12/28/05; with total market value $928,386) 910 910 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $723,030 (collateralized by various U.S. Government Obligations, ranging in par value $8,762- $436,639, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $737,455) 723 723 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $4,048,971 (collateralized by various U.S. Government Obligations, ranging in par value $168,972- $1,087,374, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $4,129,614) 4,049 4,049 -------- Total Repurchase Agreements (Cost $5,682) ($ Thousands) 5,682 -------- Total Investments -- 111.9% (Cost $299,279) ($ Thousands) 358,962 -------- - -------------------------------------------------------------------------------- 40 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Value Description ($ Thousands) - -------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (11.9)% Payable upon Return on Securities Loaned $(38,483) Payable for Investment Securities Purchased (662) Payable for Fund Shares Redeemed (216) Investment Advisory Fees Payable (39) Trustees' Fees Payable (1) Other Assets and Liabilities, Net 1,142 -------- Total Other Assets and Liabilities (38,259) -------- Net Assets -- 100.0% $320,703 ======== NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) $260,980 Undistributed net investment income 1,046 Accumulated net realized loss on investments and futures contracts (1,062) Net unrealized appreciation on investments 59,683 Net unrealized appreciation on futures contracts 56 -------- Net Assets $320,703 ======== Net Asset Value, Offering and Redemption Price Per Share -- Class A ($320,703,005 / 3,018,640 shares) $106.24 ======= A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- CONTRACT UNREALIZED TYPE OF NUMBER OF VALUE EXPIRATION APPRECIATION CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- S&P 500 Index E-Mini 67 $3,994 06/17/05 $56 --- * Non-income producing security. + Real Estate Investment Trust ++ See Note 3 in Notes to Financial Statements. (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9). The total value of securities on loan at May 31, 2005 was $37,244 ($Thousands). (C) This security was purchased with cash collateral held from securities lending (see Note 9). The total value of such securities as of May 31, 2005 was $38,483 ($Thousands). (D) The rate reported is the effective yield at time of purchase. (E) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (F) The Fund may purchase securities of certain companies with which it is affiliated to the extent these companies are represented in its benchmark Index. (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." Cl -- Class EXL -- Extendable Maturity MTN -- Medium Term Note Ser -- Series Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 41 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++ 25.9% Financials 14.1% Information Technology 13.3% Consumer Discretionary 11.7% Industrials 9.1% Health Care 7.9% Short-Term Investments 4.8% Asset-Backed Securities 4.3% Energy 3.7% Materials 1.9% Consumer Staples 1.6% Utilities 0.7% Certificates of Deposit 0.7% Telecommunication Services 0.2% Exchange Traded Fund 0.1% U.S. Treasury Obligations 0.0% Rights 0.0% Warrants ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 94.7% CONSUMER DISCRETIONARY -- 16.9% 1-800 Contacts (B)* 90,400 $ 1,766 7-Eleven* 38,700 1,155 Aaron Rents 8,900 201 Abercrombie & Fitch, Cl A 18,500 1,061 AC Moore Arts & Crafts* 38,800 1,155 Adesa 59,400 1,353 Advo (B) 163,365 5,072 Aftermarket Technology* 60,340 926 Alliance Gaming (B)* 162,940 2,117 America's Car Mart* 85,750 1,835 American Axle & Manufacturing Holdings (B) 28,430 589 American Greetings, Cl A (B) 102,910 2,674 AnnTaylor Stores (B)* 94,400 2,432 Arctic Cat 84,800 1,832 ArvinMeritor 152,500 2,196 Bandag 22,900 1,060 Belo, Cl A 35,840 881 BJ's Restaurants* 396,900 7,303 BJ's Wholesale Club* 76,800 2,316 Blue Nile (B)* 40,300 1,205 Brinker International* 14,970 563 Brown Shoe 83,000 2,913 Buffalo Wild Wings (B)* 29,500 948 Build-A-Bear Workshop (B)* 122,200 3,348 Carmike Cinemas 42,240 1,382 Carter's* 65,800 3,070 Cato, Cl A 93,200 2,690 CellStar (B)* 135,700 176 Central Garden & Pet (B)* 55,115 2,444 Charming Shoppes* 195,400 1,764 Cheesecake Factory (B)* 66,900 2,362 Christopher & Banks 57,100 1,045 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- CKE Restaurants* 70,600 $ 1,165 Claire's Stores 22,200 523 Coach* 154,800 4,495 Commercial Vehicle Group* 8,600 158 Cooper Tire & Rubber 46,770 891 Cost Plus* 38,600 898 CSK Auto* 106,650 1,806 Ctrip.com International ADR (B)* 42,310 2,149 Dave & Buster's (B)* 13,300 239 DiamondRock Hospitality+ (I)(J)* 122,500 1,235 Dick's Sporting Goods (B)* 81,165 2,936 Dollar Thrifty Automotive Group* 78,300 2,818 Dress Barn (B)* 60,890 1,102 Ethan Allen Interiors (B) 90,800 2,833 Exide Technologies (B)* 100,200 507 Fairmont Hotels & Resorts 86,100 2,970 Fleetwood Enterprises (B)* 143,400 1,372 Foot Locker 46,030 1,216 Fossil* 29,000 619 Four Seasons Hotels 25,700 1,856 Furniture Brands International 202,100 4,064 GameStop, Cl A (B)* 92,400 2,694 Gaylord Entertainment (B)* 57,100 2,400 Genesco* 36,900 1,264 Gildan Activewear* 35,400 1,795 Great Wolf Resorts* 46,700 1,029 Group 1 Automotive* 59,700 1,595 GSI Commerce (B)* 62,100 922 Guitar Center (B)* 43,800 2,496 Handleman 214,247 3,889 Hibbett Sporting Goods (B)* 117,775 4,136 HOT Topic (B)* 214,550 4,606 Imax* 106,005 1,013 Jakks Pacific (B)* 45,449 939 Jarden (B)* 99,655 5,070 Jo-Ann Stores* 56,600 1,514 K2 (B)* 99,000 1,246 Kellwood 201,710 5,075 Kerzner International* 19,400 1,195 Kimball International, Cl B 54,300 668 Knoll 115,200 2,002 La-Z-Boy 54,800 732 Landry's Restaurants 34,800 1,043 Leapfrog Enterprises (B)* 81,100 899 Liberty 31,570 1,140 Life Time Fitness* 31,400 894 Lin TV, Cl A (B)* 152,500 2,219 Linens `N Things* 67,500 1,645 Lions Gate Entertainment (B)* 358,380 3,731 Lone Star Steakhouse & Saloon (B) 58,200 1,758 Marchex, Cl B (B)* 239,100 3,567 Marine Products 11,100 168 Marvel Enterprises (B)* 80,700 1,716 - -------------------------------------------------------------------------------- 42 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- MDC Holdings 28,080 $ 2,028 Men's Wearhouse* 16,960 871 Meritage Homes* 28,300 2,058 Mikohn Gaming* 71,785 905 Movie Gallery (B) 199,680 6,382 MTR Gaming Group* 87,700 900 National Presto Industries 11,630 498 Nexstar Broadcasting Group, Cl A* 110,400 617 Nuco2 (B)* 28,800 682 O'Reilly Automotive* 1,100 61 Outdoor Channel Holdings* 20,200 303 Pantry* 38,400 1,486 Parkervision (B)* 127,600 574 Parkervision, PIPE (H) (I) (J)* 30,000 132 Payless Shoesource* 186,800 3,144 PEP Boys-Manny Moe & Jack 51,600 689 Petco Animal Supplies* 21,600 650 Phillips-Van Heusen 70,935 2,198 Pier 1 Imports (B) 51,900 871 Polo Ralph Lauren 37,300 1,445 Primedia (B)* 185,200 676 Provide Commerce (B)* 39,800 920 Quiksilver* 44,500 708 Rare Hospitality International (B)* 106,400 3,302 RC2* 31,000 1,117 Red Robin Gourmet Burgers* 57,449 3,153 Reebok International 16,590 675 Regis 118,571 4,480 Rent-A-Center* 44,300 1,048 Ryan's Restaurant Group* 132,000 1,843 Ryland Group (B) 38,700 2,651 Saks (B) 76,800 1,316 Scholastic* 51,700 1,940 Select Comfort (B)* 83,200 2,022 Shoe Carnival* 4,700 86 Shuffle Master (B)* 83,410 2,285 Sonic (B)* 72,250 2,456 Sonic Automotive 116,700 2,488 Sonic Solutions (B)* 85,000 1,299 Sotheby's Holdings, Cl A* 71,900 1,009 Sports Authority (B)* 84,700 2,710 Stage Stores* 21,600 843 Standard Motor Products 63,800 719 Standard-Pacific 21,200 1,699 Starwood Hotels & Resorts Worldwide 72,200 4,041 Superior Essex* 66,500 1,115 Superior Industries International (B) 133,400 3,022 Tekelec (B)* 113,200 1,541 Tenneco Automotive* 63,900 958 Texas Roadhouse, Cl A* 13,700 420 Theglobe.com* 1,143,200 131 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Thor Industries 36,000 $ 1,093 Timberland, Cl A (B)* 49,700 1,832 Titan International (B) 107,200 1,583 Too* 113,520 2,257 Tractor Supply* 45,900 2,039 Triarc, Cl A (B) 43,400 679 TRM (B)* 47,100 764 Unifi* 83,900 269 Urban Outfitters* 86,500 4,614 Vail Resorts* 30,400 836 Valassis Communications (B)* 69,720 2,419 Value Line 13,000 472 Visteon (B) 209,800 1,601 Warnaco Group* 95,600 2,040 Water Pik Technologies* 8,500 158 World Wrestling Entertainment 98,400 1,067 Yankee Candle (B)* 62,300 1,966 Zale* 166,200 5,182 ---------- 272,784 ---------- CONSUMER STAPLES -- 2.4% American Italian Pasta, Cl A (B) 13,500 311 Casey's General Stores 60,260 1,087 Chattem* 72,100 3,093 Chiquita Brands International (B) 195,000 5,671 Church & Dwight 22,700 821 Corn Products International (B) 105,450 2,329 Del Monte Foods* 63,200 660 Delta & Pine Land 24,900 672 Elizabeth Arden* 5,100 107 Gold Kist (B)* 118,400 2,472 Hain Celestial Group* 56,800 1,022 John B. Sanfilippo & SON* 19,600 414 Lance 34,200 605 Longs Drug Stores (B) 57,200 2,347 Molson Coors Brewing, Cl B 38,700 2,263 Nash Finch 19,200 683 NBTY* 79,500 1,768 Pathmark Stores* 87,995 788 PepsiAmericas 3,500 85 Pilgrim's Pride (B) 21,100 744 Ralcorp Holdings 48,920 1,866 Ruddick 29,800 716 Sanderson Farms 6,400 243 Spartan Stores* 18,000 232 Tyson Foods, Cl A 33,800 624 United Natural Foods (B)* 119,970 3,892 Universal 48,000 2,131 Weis Markets 20,800 764 ---------- 38,410 ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 43 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- ENERGY -- 5.1% Atlas America (B)* 17,680 $ 553 Berry Petroleum, Cl A 34,040 1,619 Cabot Oil & Gas 105,400 3,304 Cal Dive International (B)* 42,600 1,934 CARBO Ceramics (B) 12,895 924 Carrizo Oil & Gas* 32,900 496 Cimarex Energy (B)* 80,700 3,037 Core Laboratories* 23,500 590 Denbury Resources* 70,200 2,245 Encore Acquisition* 33,500 1,250 Forest Oil (B)* 118,700 4,719 Holly 76,200 2,913 Houston Exploration* 8,700 443 Hydril* 63,395 3,291 Input/Output (B)* 85,500 507 KCS Energy* 56,300 791 Laclede Group 12,300 368 Meridian Resource* 94,400 428 National Oilwell Varco* 21,000 945 Oceaneering International* 4,700 172 Penn Virginia 66,200 2,732 Petroleum Development* 30,200 789 Pioneer Natural Resources 35,540 1,426 Plains Exploration & Production (B)* 165,746 5,063 Range Resources (B) 113,000 2,610 Remington Oil & Gas* 40,200 1,246 SEMCO Energy (B) 115,600 633 Southwestern Energy* 11,300 789 Spinnaker Exploration* 44,500 1,365 St. Mary Land & Exploration (B) 113,100 2,943 Stone Energy* 147,500 6,347 Superior Energy Services* 146,500 2,293 Swift Energy (B)* 200,640 6,852 Syntroleum (B)* 104,600 907 Tesoro* 89,200 3,889 Tetra Technologies* 43,650 1,205 Vintage Petroleum (B) 188,430 5,204 W&T Offshore 6,600 142 W-H Energy Services* 130,520 2,828 Whiting Petroleum* 51,900 1,795 ---------- 81,587 ---------- FINANCIALS -- 18.2% Acadia Realty Trust+ 95,200 1,614 Accredited Home Lenders Holding (B)* 32,300 1,356 Advance America Cash Advance Centers 64,200 784 Affiliated Managers Group (B)* 76,100 5,076 Agree Realty+ 33,300 957 Allmerica Financial* 60,100 2,099 AMB Property+ (B) 97,300 3,922 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- American Home Mortgage Investment+ (B) 114,200 $ 3,718 American Physicians Capital* 8,600 298 AmericanWest Bancorp* 3,400 67 AmerUs Group (B) 46,300 2,203 Apartment Investment & Management, Cl A+ 94,600 3,510 Arbor Realty Trust+ 57,140 1,523 Arch Capital Group* 25,900 1,156 Archstone-Smith Trust+ 101,057 3,721 Aspen Insurance Holdings 54,900 1,510 Asset Acceptance Capital* 56,295 1,383 Assured Guaranty 33,200 682 AvalonBay Communities+ (B) 60,000 4,492 Bancfirst 2,100 165 Bancorpsouth (B) 81,100 1,813 Bank Mutual 93,260 1,011 Bank of the Ozarks (B) 10,400 329 Brandywine Realty Trust+ 65,300 1,839 BRE Properties, Cl A+ 56,600 2,181 Brookline Bancorp 91,400 1,389 Camden Property Trust+ 52,000 2,684 Capital Southwest 16,700 1,374 Capitol Bancorp 4,900 152 Cardinal Financial (B)* 92,800 844 Cascade Bancorp (B) 42,162 872 Cash America International 24,000 413 Cathay General Bancorp 11,600 394 CBL & Associates Properties+ (B) 20,770 1,692 Center Financial 16,500 353 Central Pacific Financial 26,500 941 Chemical Financial 6,182 198 Clark 15,200 220 CNA Surety* 40,300 557 Colonial BancGroup 101,100 2,253 Commerce Group 49,600 2,956 Commercial Capital Bancorp 238,566 4,044 Commercial Federal 65,000 1,626 Commercial Net Lease Realty+ 37,700 731 Community Bank System 34,400 801 Community Trust Bancorp 2,500 74 CompuCredit (B)* 54,100 1,706 Corixa (B)* 197,100 838 Corporate Office Properties Trust+ 149,800 4,184 Corus Bankshares 11,800 606 Crescent Real Estate Equity EQT+ 111,700 2,054 Delphi Financial Group, Cl A 94,501 4,007 Downey Financial 46,700 3,503 E*Trade Financial* 460,100 5,682 Eagle Hospitality Properties Trust+ 70,800 644 East West Bancorp 11,500 387 Education Realty Trust+ 80,500 1,382 Encore Capital Group* 71,100 1,092 - -------------------------------------------------------------------------------- 44 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Equity Residential+ (B) 76,800 $ 2,757 Essex Property Trust+ (B) 24,000 1,920 EuroBancshares* 4,300 60 Euronet Worldwide* 120,675 3,384 FBL Financial Group, Cl A 28,100 752 Federal Agricultural Mortgage, Cl C 3,400 63 Federal Realty Investment Trust+ 75,000 4,140 FelCor Lodging Trust+* 48,300 672 First American 86,300 3,340 First Bancorp Puerto Rico 37,200 1,426 First Cash Financial Services* 80,900 1,408 First Community Bancorp 21,900 968 First Financial Bancorp 33,500 603 First Financial Bankshares (B) 2,300 96 First Indiana (B) 52,432 1,413 First Merchants 7,600 189 First Niagara Financial Group 143,700 1,871 First Republic Bank 44,850 1,439 FirstFed Financial* 47,300 2,563 FirstMerit 40,180 1,025 Flagstar Bancorp (B) 161,700 3,195 Flushing Financial 56,300 951 Fpic Insurance Group (B)* 43,400 1,292 Frontier Financial 4,950 123 Gabelli Asset Management (B) 14,700 642 Glacier Bancorp 24,589 574 Gold Banc 119,600 1,661 Gramercy Capital+ 5,200 113 Greater Bay Bancorp (B) 81,400 2,046 Greenhill (B) 43,300 1,545 Hancock Holding 37,330 1,208 Hanmi Financial 29,500 474 HCC Insurance Holdings (B) 45,700 1,792 Highwoods Properties+ 39,700 1,093 Hilb Rogal & Hobbs (B) 141,400 4,820 HomeBanc+ 82,900 783 Horace Mann Educators (B) 50,770 924 Host Marriott+ (B) 131,800 2,208 HRPT Properties Trust+ 204,700 2,422 Hub International 104,300 1,864 Huron Consulting Group 31,200 717 IndyMac Bancorp 47,800 1,967 Investment Technology Group* 76,000 1,500 IPC Holdings 37,100 1,418 Irwin Financial 125,300 2,630 ITLA Capital* 1,800 90 Jones Lang LaSalle* 10,700 454 Kansas City Life Insurance 27,500 1,296 KNBT Bancorp 121,300 1,809 Knight Capital Group, Cl A* 34,900 263 LandAmerica Financial Group (B) 49,900 2,804 Lexington Corporate Properties Trust+ 14,100 325 Macatawa Bank 3,220 110 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Macerich+ 58,700 $ 3,700 Mack-Cali Realty+ 57,400 2,531 MainSource Financial Group 2,500 46 Marlin Business Services* 4,200 85 Max Re Capital 98,800 2,184 MB Financial 9,900 378 MBT Financial 4,100 78 Medical Properties Trust+ 128,000 1,286 Mercantile Bank 3,600 147 MeriStar Hospitality+* 16,000 134 MFA Mortgage Investments+ 120,700 856 Midland 2,300 73 Montpelier Re Holdings 37,800 1,298 Morningstar (B)* 15,200 334 Nara Bancorp 25,700 357 Nasdaq Stock Market* 113,000 1,939 National Health Investors+ 13,800 368 NBT Bancorp (B) 79,900 1,894 New Century Financial+ (B) 32,200 1,641 New Plan Excel Realty Trust+ 74,700 2,012 NorthStar Realty Finance+ 75,500 785 Novastar Financial+ (B) 24,900 916 OceanFirst Financial 2,800 60 Odyssey Re Holdings (B) 50,200 1,210 Old Second Bancorp (B) 5,200 146 Omega Healthcare Investors+ 28,100 336 Online Resources* 40,300 392 optionsXpress Holdings (B)* 125,700 1,697 Oriental Financial Group 31,100 436 Pennsylvania Real Estate Investment Trust+ 27,800 1,223 PFF Bancorp 56,190 1,632 Philadelphia Consolidated Holding (B)* 3,900 322 Placer Sierra Bancshares 32,300 834 Platinum Underwriters Holdings 109,250 3,321 PMI Group 28,130 1,063 Post Properties+ 76,300 2,503 Presidential Life 59,000 894 ProAssurance* 73,430 2,873 Prologis+ 47,700 1,948 Prosperity Bancshares 11,800 320 Public Storage+ (B) 31,500 1,894 PXRE Group 84,120 2,013 Rainier Pacific Financial Group 44,620 763 RAIT Investment Trust+ (B) 106,500 3,046 Reckson Associates Realty+ 112,400 3,551 Redwood Trust+ 11,500 595 RenaissanceRe Holdings 18,400 867 Safety Insurance Group 38,000 1,198 Santander BanCorp 5,500 121 Saxon Capital+ 38,100 645 Selective Insurance Group 16,700 804 Shurgard Storage Centers, Cl A+ 114,800 5,011 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 45 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Signature Bank* 128,980 $ 3,163 Simon Property Group+ 84,200 5,786 Sizeler Property Investors+ 10,900 131 SL Green Realty+ 66,020 4,090 Sterling Bancorp 5,900 125 Sterling Financial, Pennsylvania Shares 3,400 88 Sterling Financial, Washington Shares* 79,305 2,803 Stewart Information Services 122,000 4,788 Sunstone Hotel Investors+ 86,800 1,997 SVB Financial Group* 78,500 3,749 Taubman Centers+ 60,500 1,920 TierOne 63,200 1,525 Trustmark 63,200 1,806 U-Store-It Trust+ 97,000 1,833 UCBH Holdings 10,300 176 UICI 46,900 1,179 UMB Financial (B) 32,480 1,809 United Fire & Casualty 7,600 299 United PanAm Financial* 29,606 705 Universal American Financial* 52,500 994 Vineyard National Bancorp 5,100 161 Washington Federal 104,360 2,381 Washington Trust Bancorp 2,700 76 WesBanco 33,400 988 Westcorp 92,000 4,456 Wilshire Bancorp 21,000 280 Winston Hotels+ 135,660 1,424 World Acceptance* 14,800 385 WR Berkley 39,900 1,415 Wright Express* 106,000 1,697 Yardville National Bancorp 1,900 64 Zenith National Insurance (B) 37,500 2,376 ---------- 292,693 ---------- HEALTH CARE -- 11.7% Abgenix (B)* 194,400 1,400 Accelrys* 132,800 701 Adeza Biomedical* 4,100 48 Advanced Medical Optics (B)* 18,000 695 Albany Molecular Research* 27,700 330 Align Technology (B)* 166,500 1,210 Alkermes (B)* 177,200 2,056 Alliance Imaging* 149,400 1,499 Alpharma, Cl A 103,300 1,329 Amedisys (B)* 39,200 1,184 America Service Group* 54,890 1,081 American Healthways (B)* 60,415 2,373 American Medical Systems Holdings* 170,830 3,410 Amsurg* 61,000 1,645 Amylin Pharmaceuticals (B)* 80,900 1,293 Analogic 17,100 727 Andrx* 45,500 909 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Animas (B)* 107,400 $ 1,924 Applera--Celera Genomics Group* 302,600 3,002 Apria Healthcare Group (B)* 28,200 888 Ariad Pharmaceuticals* 280,300 1,690 Array Biopharma* 185,200 1,156 Arthrocare (B)* 33,500 1,080 Aspect Medical Systems* 21,700 698 Bio-Rad Laboratories, Cl A (B)* 57,200 3,082 BioScrip* 93,200 487 Biosite (B)* 40,000 2,188 Cardiodynamics International* 72,900 162 Cell Genesys (B)* 413,300 2,401 Cephalon (B)* 84,400 3,580 Cerner (B)* 46,000 3,006 Chemed 36,520 1,544 Community Health Systems (B)* 51,400 1,869 Conceptus (B)* 140,800 750 Connetics (B)* 74,800 1,666 Conor Medsystems* 52,100 780 Cooper 20,290 1,340 Cross Country Healthcare* 62,300 1,056 Crucell ADR (B)* 35,700 700 Cubist Pharmaceuticals* 251,900 2,522 CV Therapeutics (B)* 249,100 5,037 Datascope 4,600 140 Dendreon (B)* 41,200 218 Depomed (B)* 120,900 534 Digene (B)* 58,700 1,477 DJ Orthopedics* 115,300 3,200 Dyax* 152,700 710 Encysive Pharmaceuticals (B)* 478,900 4,885 Enzon Pharmaceuticals* 48,400 294 Exact Sciences* 124,400 361 Exelixis (B)* 203,818 1,431 First Horizon Pharmaceutical (B)* 117,500 2,209 Flamel Technologies ADR (B)* 10,500 191 Gen-Probe* 35,400 1,376 Genesis HealthCare* 37,800 1,644 Genitope (B)* 43,400 565 Guilford Pharmaceuticals (B)* 276,300 696 Health Net* 64,800 2,218 HealthTronics* 83,200 1,056 Henry Schein* 15,000 604 Human Genome Sciences* 157,800 1,780 Immucor (B)* 62,975 2,110 Impax Laboratories (B)* 92,900 1,524 Incyte (B)* 247,900 1,891 IRIS International* 14,040 268 Isis Pharmaceuticals (B)* 360,600 1,320 Isolagen (B)* 191,100 778 Ista Pharmaceuticals* 46,400 368 Kindred Healthcare* 15,000 579 - -------------------------------------------------------------------------------- 46 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Kos Pharmaceuticals (B)* 43,500 $ 2,511 Kosan Biosciences* 123,700 585 LabOne* 23,500 906 Lifecore Biomedical* 12,900 165 LifePoint Hospitals (B)* 121,200 5,452 Magellan Health Services (B)* 36,500 1,185 Martek Biosciences (B)* 49,300 1,843 Medarex (B)* 395,900 3,001 Medcath* 53,300 1,381 Medical Action Industries* 4,200 74 Medicis Pharmaceutical, Cl A (B) 63,500 1,789 Mentor (B) 62,400 2,553 Mettler Toledo International* 31,110 1,524 MGI Pharma (B)* 142,500 3,306 Myriad Genetics (B)* 43,100 709 Nabi Biopharmaceuticals (B)* 101,500 1,247 National Dentex* 79,935 1,499 Nektar Therapeutics (B)* 293,400 5,363 Neose Technologies* 194,800 512 NitroMed (B)* 99,000 1,895 Nu Skin Enterprises, Cl A 53,300 1,204 Option Care (B) 72,670 967 OraSure Technologies* 150,100 1,247 Orthofix International* 22,030 1,010 Owens & Minor 38,170 1,183 Pain Therapeutics* 93,000 488 PainCare Holdings* 74,800 307 Par Pharmaceutical* 11,200 358 Parexel International* 69,900 1,276 PerkinElmer 111,300 2,129 Pharmacopeia Drug Discovery* 86,129 417 Pharmion* 48,600 988 PolyMedica (B) 51,400 1,804 Pozen* 129,500 954 Prestige Brands Holdings* 86,200 1,465 Protein Design Labs (B)* 99,500 1,900 PSS World Medical* 140,700 1,652 Psychiatric Solutions (B)* 57,165 2,341 Quality Systems (B)* 20,825 1,252 Radiation Therapy Services (B)* 8,300 172 Res-Care* 88,110 1,175 Rigel Pharmaceuticals* 66,600 1,191 Rotech Healthcare* 56,000 1,411 Salix Pharmaceuticals* 36,300 636 SeraCare Life Sciences* 42,200 571 Serologicals* 17,000 365 SFBC International* 65,965 2,309 SurModics (B)* 26,375 1,040 Sybron Dental Specialties* 153,050 5,674 Symmetry Medical* 38,300 856 Taro Pharmaceuticals Industries (B)* 34,000 1,112 Techne (B)* 12,300 573 Telik* 153,500 2,189 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Third Wave Technologies* 374,800 $ 1,409 Transgenomic* 321,635 219 Triad Hospitals (B)* 15,280 775 United Therapeutics (B)* 67,800 3,387 Vasogen* 183,600 821 Viasys Healthcare* 74,400 1,730 West Pharmaceutical Services 20,700 576 Zymogenetics* 17,700 308 ---------- 187,866 ---------- INDUSTRIALS -- 14.8% Active Power* 107,400 288 Actuant, Cl A (B)* 15,100 679 Acuity Brands 77,770 1,909 Administaff* 35,300 754 Advisory Board* 58,300 2,633 AGCO (B)* 107,600 1,976 Airtran Holdings (B)* 81,100 792 Albany International, Cl A 91,670 2,867 Alliant Techsystems (B)* 19,300 1,384 American Ecology 30,400 385 AMN Healthcare Services* 47,600 687 AO Smith 96,390 3,023 Applied Industrial Technologies 99,000 3,014 Arlington Tankers 75,000 1,475 Armor Holdings* 32,400 1,223 Aviall* 19,400 597 Banta (B) 138,440 6,080 Beacon Roofing Supply* 17,200 411 BearingPoint (B)* 411,400 2,695 Blount International* 125,690 2,220 BlueLinx Holdings 21,300 259 Briggs & Stratton 63,600 2,153 Brink's 95,500 2,981 Bucyrus International, Cl A 31,400 1,120 Calgon Carbon 93,400 832 Cascade 43,300 1,525 CDI 58,200 1,242 Ceradyne* 54,800 1,265 Chicago Bridge & Iron 40,800 881 CIRCOR International 50,290 1,245 Clean Harbors (B)* 19,100 396 CNH Global 94,240 1,680 Collectors Universe* 89,500 1,423 Columbus McKinnon* 16,000 151 Consolidated Graphics* 9,900 419 Corinthian Colleges (B)* 114,700 1,773 Corporate Executive Board 21,796 1,521 Corrections of America* 37,400 1,350 CoStar Group* 33,200 1,334 Courier 24,465 857 CPI Aerostructures* 46,690 436 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 47 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- CRA International (B)* 35,600 $ 2,029 DiamondCluster International* 67,700 886 Duratek* 39,640 869 Dycom Industries* 20,800 408 Eagle Materials 14,600 1,280 EDO 50,950 1,451 Education Management (B)* 53,000 1,720 EGL* 59,200 1,127 EMCOR Group* 26,500 1,259 Engineered Support Systems 90,900 3,545 ESCO Technologies* 18,655 1,581 Esterline Technologies* 8,400 327 ExpressJet Holdings* 74,500 643 Federal Signal 47,620 744 Flowserve (B)* 30,000 884 Franklin Electric 6,600 254 Freightcar America* 34,700 683 FTI Consulting (B)* 36,200 796 GATX (B) 153,000 5,106 General Cable (B)* 121,700 1,705 General Maritime* 26,020 1,087 Genlyte Group* 13,800 615 Geo Group* 8,800 214 Global Power Equipment Group* 32,500 249 GrafTech International* 249,860 1,099 Griffon* 133,570 2,662 Grupo TMM ADR, Cl A (B)* 142,600 354 Harsco 39,800 2,310 HUB Group, Cl A (B)* 51,800 1,423 IKON Office Solutions 135,800 1,316 Innovative Solutions & Support (B)* 77,995 2,702 Insituform Technologies, Cl A* 48,700 723 Integrated Electrical Services (B)* 84,260 128 Intermagnetics General* 87,165 2,516 iPayment* 21,200 809 Iron Mountain* 53,150 1,525 JLG Industries (B) 54,600 1,392 John H. Harland 38,700 1,458 Joy Global 58,177 2,184 Kadant* 44,070 903 Kansas City Southern (B)* 135,690 2,712 Kaydon (B) 98,040 2,798 Kennametal 50,200 2,209 Kirby* 54,200 2,312 Knight Transportation 89,150 2,180 Korn/Ferry International* 4,500 71 Labor Ready (B)* 70,100 1,447 Laidlaw International (B)* 178,500 3,970 Laureate Education* 36,700 1,714 Lennox International (B) 110,700 2,351 Levitt, Cl A* 7,600 219 Lincoln Electric Holdings (B) 61,700 2,021 LSI Industries 46,163 627 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- M/I Homes 74,500 $ 3,761 Manitowoc 46,800 1,897 Marten Transport* 7,900 155 Medical Staffing Network Holdings (B)* 100,100 544 Mercury Computer Systems* 49,000 1,416 Mesa Air Group (B)* 64,300 410 Milacron (B)* 241,948 527 Mine Safety Appliances 31,065 1,423 Moog, Cl A* 62,413 1,894 Mueller Industries 24,300 656 Navigant Consulting (B)* 276,400 6,341 Navistar International (B)* 47,700 1,455 NCO Group* 21,300 423 Nordson 15,800 491 Old Dominion Freight Line (B)* 65,200 1,987 Orbital Sciences (B)* 75,800 736 Overnite 45,700 1,948 Pall (B) 95,800 2,796 PHH* 37,100 890 Pinnacle Airlines (B)* 31,600 310 PRA International* 5,000 130 Quality Distribution* 33,360 265 Quanta Services (B)* 150,800 1,362 R.H. Donnelley* 12,100 744 RailAmerica* 26,300 307 Regal-Beloit 46,590 1,197 Rent-Way* 16,100 149 Republic Airways Holdings* 23,600 301 Resources Connection (B)* 87,000 1,733 Ritchie Bros. Auctioneers 52,000 1,934 Robbins & Myers 52,150 1,233 Rofin-Sinar Technologies* 32,020 1,034 Ryder System 101,300 3,722 Sauer-Danfoss 7,100 139 School Specialty (B)* 34,340 1,347 SCS Transportation* 16,410 299 Simpson Manufacturing 92,700 2,664 Skywest (B) 59,400 1,083 Source Interlink* 71,370 696 Sourcecorp* 63,900 1,368 Stericycle* 18,900 938 Stewart Enterprises, Cl A* 268,900 1,592 Strayer Education 19,300 1,679 Surebeam, Cl A (B)* 513,125 5 Sypris Solutions 89,500 943 Tecumseh Products, Cl A 39,500 1,080 Teledyne Technologies* 33,400 1,056 Terex (B)* 23,500 929 Tetra Tech* 171,400 2,065 Thomas & Betts* 38,200 1,180 TNS* 7,100 155 Toro (B) 49,400 2,127 Triumph Group* 10,100 358 - -------------------------------------------------------------------------------- 48 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Unifirst 51,500 $ 1,885 United Rentals (B)* 219,000 4,398 United Stationers* 23,500 1,152 Universal Display (B)* 30,400 286 Universal Forest Products 80,900 3,220 Universal Truckload Services* 65,800 1,099 USA Truck* 10,800 219 Valmont Industries 38,800 929 Ventiv Health* 93,080 1,890 Volt Information Sciences* 8,200 161 Wabash National (B) 9,700 242 Wabtec 53,500 1,107 Walter Industries (B) 137,800 5,843 Washington Group International (B)* 86,600 4,158 Watson Wyatt Holdings 119,600 3,148 WCI Communities* 56,300 1,683 Woodward Governor 27,400 2,120 Yellow Roadway (B)* 7,517 397 York International 47,800 1,969 ---------- 239,312 ---------- INFORMATION TECHNOLOGY -- 18.0% Adaptec* 585,600 2,331 Advanced Digital Information* 177,700 1,221 Aeroflex* 197,490 1,580 Agile Software (B)* 146,900 947 Agilysys 64,900 998 Akamai Technologies* 153,000 2,148 Alliance Semiconductor* 122,400 206 Altera* 175,500 3,894 Altiris* 36,100 679 American Reprographics* 103,200 1,538 Ansys* 40,840 1,362 aQuantive (B)* 352,000 5,417 Arris Group (B)* 280,800 2,432 Asyst Technologies* 308,300 1,298 Atari* 307,705 760 ATMI (B)* 83,859 2,356 Avid Technology (B)* 37,300 2,187 Avnet (B)* 44,440 930 Axcelis Technologies* 94,000 625 BEI Technologies 15,700 404 Belden CDT (B) 126,140 2,538 Bell Microproducts* 22,000 180 BISYS Group (B)* 156,310 2,384 Black Box (B) 68,800 2,365 Blackbaud (B) 82,200 1,131 Borland Software* 238,700 1,528 Brooks Automation (B)* 261,700 3,946 Cabot Microelectronics (B)* 14,100 442 Checkpoint Systems (B)* 66,100 1,165 Ciber* 111,100 905 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- CNET Networks* 120,400 $ 1,250 Cognex (B) 105,664 2,743 Coherent* 54,650 1,794 Comtech Telecommunications* 12,900 467 Corillian* 328,700 1,057 Credence Systems (B)* 636,320 5,040 Cryptologic 30,025 1,012 CSG Systems International (B)* 55,800 1,061 Cymer (B)* 182,300 5,179 Daktronics* 8,000 186 Digimarc* 299,600 1,528 Digital River* 9,000 248 Digitas (B)* 189,800 2,101 Diodes* 19,100 635 DoubleClick* 70,800 583 E.piphany* 190,800 666 Earthlink* 454,700 4,824 Emulex (B)* 123,400 2,332 Epicor Software* 24,400 301 F5 Networks (B)* 54,700 2,801 Fairchild Semiconductor International (B)* 139,600 1,996 FARO Technologies* 49,910 1,388 FEI (B)* 147,800 3,077 Foundry Networks* 86,300 797 Gartner, Cl A* 154,200 1,530 Genesis Microchip (B)* 242,500 4,013 Harmonic* 101,600 633 Homestore* 539,200 1,127 Hutchinson Technology (B)* 100,600 4,162 Hypercom* 187,900 1,193 Hyperion Solutions* 43,000 1,898 Identix (B)* 95,700 525 Imation 52,200 1,971 Immersion (B)* 448,948 2,631 InFocus* 121,100 504 InPhonic (B)* 51,700 764 Integrated Circuit Systems (B)* 63,700 1,350 Inter-Tel 25,400 521 Intermix Media (B)* 101,900 604 International Rectifier (B)* 36,700 1,754 Internet Security Systems* 65,500 1,454 InterVoice* 39,500 354 Interwoven* 140,100 1,115 Intrado* 22,800 292 Iomega 348,800 1,078 Itron* 16,500 678 iVillage* 357,800 2,158 IXYS* 20,500 283 Jack Henry & Associates (B) 105,900 1,873 Jupitermedia* 335,780 6,128 Kanbay International* 59,000 1,225 Keane* 64,000 859 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 49 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Keynote Systems* 94,900 $ 1,101 KFX (B)* 98,500 1,297 Komag* 172,100 4,965 Lattice Semiconductor* 941,500 3,973 Lawson Software* 186,500 1,104 Leadis Technology* 228,600 1,566 LeCroy* 15,700 258 Lionbridge Technologies* 163,800 816 Littelfuse* 29,560 889 LivePerson* 127,400 306 LTX (B)* 176,000 843 Macrovision* 87,900 1,847 Magma Design Automation* 10,500 84 Majesco Entertainment (B)* 76,450 670 Manhattan Associates* 147,300 3,129 Matrixone* 254,700 1,164 Mattson Technology* 162,500 1,271 MAXIMUS (B) 91,300 3,131 Maxtor (B)* 406,500 2,232 Mentor Graphics* 175,400 1,803 Merix (B)* 105,600 766 Methode Electronics 164,030 1,959 Micromuse (B)* 149,500 939 Micros Systems (B)* 75,785 3,409 Microsemi* 15,365 317 Motive* 144,500 1,256 MTS Systems 18,900 603 Multi-Fineline Electronix* 49,315 805 Mykrolis* 137,000 1,848 Napster (B)* 193,300 820 Netease.com ADR (B)* 18,400 950 Netgear (B)* 14,200 279 Newport* 53,600 753 Niku* 38,500 579 O2Micro International* 199,500 2,486 Omnivision Technologies (B)* 138,000 2,183 Onyx Software* 92,549 310 Open Solutions* 37,000 657 OSI Systems (B)* 117,100 1,745 Packeteer* 73,800 876 PalmOne (B)* 20,700 588 Parametric Technology (B)* 215,400 1,297 Paxar* 41,600 733 Performance Technologies* 38,220 257 Perot Systems, Cl A* 62,000 801 Photronics (B)* 183,800 4,233 Pinnacle Systems* 123,800 732 Pixelworks* 462,000 3,959 Plantronics (B) 32,000 1,101 PLX Technology* 191,000 1,455 Polycom* 417,700 7,147 Pomeroy IT Solutions (B)* 52,920 666 Power Integrations* 73,700 1,756 ProQuest* 89,600 2,876 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Quantum* 758,600 $ 1,972 Radisys* 116,200 1,879 RADWARE* 31,200 697 Redback Networks* 70,000 399 Richardson Electronics 115,690 1,030 RightNow Technologies* 95,800 895 RSA Security* 119,300 1,467 Rudolph Technologies* 138,800 2,001 ScanSoft (B)* 547,400 2,222 Schawk 4,000 96 Seachange International* 177,500 1,402 Secure Computing* 166,700 1,870 Serena Software (B)* 110,015 2,153 Sigmatel* 38,900 881 Sina (B)* 38,800 1,080 Sirf Technology Holdings* 318,200 4,506 Skyworks Solutions* 480,000 3,038 Spatialight (B)* 300,000 1,821 SRA International, Cl A* 16,400 557 SS&C Technologies 45,700 1,366 STATS ChipPAC ADR (B)* 162,923 1,176 Storage Technology* 51,700 1,669 Stratasys (B)* 42,600 1,379 SupportSoft* 189,000 979 Sybase (B)* 175,300 3,576 SYKES Enterprises* 127,248 1,054 Synaptics* 33,800 650 Synopsys* 45,560 823 Tech Data* 32,100 1,152 Tessera Technologies (B)* 128,800 3,792 THQ (B)* 19,210 536 TIBCO Software (B)* 427,200 2,708 Titan* 103,700 2,281 TradeStation Group* 162,900 1,201 Trident Microsystems* 21,800 462 Triquint Semiconductor* 690,100 2,339 Ultra Clean Holdings* 128,838 850 Unisys* 292,700 2,119 United Online 61,900 801 Utstarcom (B)* 68,800 506 Verint Systems* 38,225 1,338 WatchGuard Technologies* 75,400 274 Wavecom ADR (B)* 87,637 748 WebEx Communications* 45,200 1,214 webMethods* 161,400 812 Western Digital* 213,700 3,208 Wind River Systems* 50,200 823 Zoran* 55,100 680 ---------- 289,712 ---------- MATERIALS -- 4.6% Airgas 26,300 631 AK Steel Holding (B)* 166,700 1,275 - -------------------------------------------------------------------------------- 50 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Albemarle 101,800 $ 3,873 Alpha Natural Resources (B)* 42,900 1,025 Apex Silver Mines (B)* 142,500 1,917 Aptargroup 62,890 3,145 Arch Chemicals 46,720 1,101 Arch Coal 75,200 3,643 Buckeye Technologies* 87,700 725 Carpenter Technology (B) 42,865 2,315 Cleveland-Cliffs (B) 26,900 1,577 Constar International* 91,398 293 Crown Holdings* 270,400 4,026 Cytec Industries 100,465 4,185 Ferro 80,100 1,541 FMC* 16,900 937 Foundation Coal Holdings 47,600 1,213 Georgia Gulf 20,020 636 Greif, Cl A (B) 15,800 1,148 H.B. Fuller 35,900 1,163 Headwaters (B)* 58,100 1,922 Hercules (B)* 121,700 1,687 Jacuzzi Brands* 362,600 3,702 Libbey 9,700 185 Massey Energy (B) 40,500 1,637 Mosaic (B)* 70,700 925 NCI Building Systems* 45,700 1,579 Neenah Paper (B) 30,200 904 NewMarket* 102,549 1,394 NS Group* 30,100 868 Octel 38,000 686 Olin (B) 71,710 1,346 OM Group* 57,700 1,454 Packaging of America 25,800 563 Quanex 44,700 2,320 Rock-Tenn, Cl A 71,600 824 Schnitzer Steel Industries, Cl A 34,600 800 Schweitzer-Mauduit International 80,558 2,414 Silgan Holdings 60,675 3,459 Steel Dynamics (B) 128,800 3,463 Symyx Technologies (B)* 101,300 2,581 USG (B)* 10,900 500 Wellman 19,000 214 Wheeling-Pittsburgh (B)* 100,700 1,786 ---------- 73,582 ---------- TELECOMMUNICATION SERVICES -- 0.9% Adtran 38,700 850 Alamosa Holdings (B)* 131,620 1,626 Aspect Communications* 145,200 1,394 Commonwealth Telephone Enterprises* 13,620 712 Fairpoint Communications (B)* 171,000 2,662 IDT* 46,500 627 IDT, Cl B (B)* 50,700 695 Jamdat Mobile (B)* 6,900 195 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- New Skies Satellites Holdings (B)* 88,000 $ 1,558 NMS Communications* 178,900 581 North Pittsburgh Systems 4,700 88 Novatel Wireless (B)* 145,000 1,808 Premiere Global Services* 71,100 800 Saga Communications, Cl A* 6,300 87 Talk America Holdings* 55,500 493 US Unwired* 189,200 957 ---------- 15,133 ---------- UTILITIES -- 2.1% AGL Resources 68,870 2,427 Allete 24,566 1,179 Avista 106,200 1,872 Cascade Natural Gas 38,890 748 Centerpoint Energy (B) 97,300 1,193 Cleco 52,700 1,101 CMS Energy (B)* 125,600 1,662 El Paso Electric (B)* 67,000 1,345 Energen 29,100 1,897 Idacorp 38,840 1,100 Nicor (B) 53,300 2,105 NorthWestern 59,300 1,719 Oneok (B) 34,400 1,061 Pico Holdings (B)* 76,958 1,992 PNM Resources 168,700 4,916 UGI 60,200 1,596 UIL Holdings (B) 42,000 2,177 Westar Energy 68,070 1,570 WGL Holdings 21,480 699 Wisconsin Energy 35,400 1,285 ---------- 33,644 ---------- Total Common Stock (Cost $1,358,066) ($ Thousands) 1,524,723 ---------- FOREIGN STOCK -- 0.9% Canaccord Capital 135,000 1,051 Compton Petroleum* 90,000 771 Deer Creek Energy* 107,000 1,182 Dundee+ 66,500 1,400 Dundee Wealth Management 160,210 1,188 First Quantum Minerals* 109,000 1,811 Granded Cache Coal* 213,000 1,749 OPTI Canada* 111,500 2,263 Railpower Technologies* 310,900 1,388 Western Oil Sands, Cl A* 118,500 1,826 ---------- Total Foreign Stock (Cost $13,476) ($ Thousands) 14,629 ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 51 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- EXCHANGE TRADED FUNDS (B) -- 0.3% iShares Russell 2000 Index Fund 19,940 $ 2,446 iShares Russell 2000 Value Index Fund 6,600 1,222 Nasdaq-100 Index Tracking Stock 19,800 754 ---------- Total Exchange Traded Funds (Cost $4,051) ($ Thousands) 4,422 ---------- Number of Warrants --------- WARRANTS -- 0.0% Washington Mutual (D)* 279,461 42 ---------- Total Warrants (Cost $43) ($ Thousands) 42 ---------- Number of Rights --------- RIGHTS -- 0.0% Bank United (G)* 27,200 -- ---------- Total Rights (Cost $4) ($ Thousands) -- ---------- CORPORATE OBLIGATIONS (C) (F) -- 11.9% FINANCIALS -- 11.9% ASIF Global Financing XV (H) 3.026%, 09/02/05 $ 610 610 Allstate Life Global Funding II MTN (H) 3.210%, 06/15/06 3,023 3,023 American General Finance (H) 3.090%, 06/15/06 5,915 5,915 Bear Stearns EXL 3.100%, 06/15/06 11,699 11,699 CCN Bluegrass (H) 3.170%, 02/21/06 4,272 4,272 CIT Group MTN 3.260%, 05/12/06 16,431 16,431 3.199%, 07/29/05 749 750 3.163%, 04/19/06 1,643 1,644 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 3,286 3,286 Countrywide Home Loans MTN, Ser A 3.509%, 03/21/06 5,389 5,389 Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 1,972 1,972 3.270%, 01/31/06 1,446 1,446 3.152%, 06/23/05 4,009 4,009 3.040%, 11/30/05 7,493 7,493 Dekabank (H) 3.206%, 05/19/06 12,159 12,157 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Five Finance MTN (H) 3.100%, 09/22/05 $ 9,333 $ 9,332 Harrier Finance Funding MTN (H) 3.034%, 09/15/05 1,906 1,906 Harrier Finance Funding MTN, Ser 1 (H) 3.016%, 06/15/05 5,718 5,718 Irish Life & Permanent MTN, Ser X (H) 3.101%, 06/22/06 6,112 6,112 Jackson National Life Funding (H) 3.064%, 05/01/06 14,459 14,459 K2 MTN (H) 2.995%, 12/12/05 394 394 Lakeside Funding 3.120%, 06/08/05 3,286 3,286 Liberty Lighthouse US Capital MTN (H) 3.118%, 05/10/06 6,572 6,568 Morgan Stanley EXL 3.089%, 05/04/06 2,300 2,300 Morgan Stanley EXL, Ser S 3.085%, 06/02/06 3,286 3,286 Nationwide Building Society (H) 3.090%, 01/06/06 6,573 6,573 3.083%, 10/28/05 3,286 3,286 Northern Rock (H) 3.099%, 02/03/06 6,770 6,770 Pacific Life Global Funding (H) 3.080%, 06/13/06 4,929 4,929 Premium Asset Trust, Ser 2004-01 (H) 3.270%, 02/06/06 4,864 4,867 Premium Asset Trust, Ser 2004-10 (H) 3.100%, 04/14/06 9,201 9,201 SLM EXL, Ser S (H) 3.090%, 06/15/06 7,230 7,230 SLM MTN, Ser X (H) 3.090%, 06/20/06 13,145 13,145 White Pine Finance MTN, Ser 1 (H) 3.071%, 11/01/05 2,892 2,892 ---------- Total Corporate Obligations (Cost $192,350) ($ Thousands) 192,350 ---------- ASSET-BACKED SECURITIES (C) (F) (H) -- 6.1% AUTOMOTIVE -- 1.1% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 15,900 15,900 Drivetime Auto Owner Trust, Ser 2005-A, Cl A1 3.110%, 03/15/06 1,566 1,566 ---------- 17,466 ---------- - -------------------------------------------------------------------------------- 52 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- MORTGAGE RELATED SECURITIES -- 5.0% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 $ 4,206 $ 4,206 Blue Heron Funding, Ser 6A, Cl A1 3.129%, 06/21/05 1,314 1,315 Blue Heron Funding, Ser 9A, Cl A1 3.120%, 02/22/06 6,573 6,573 CCN Independence IV 3.160%, 10/17/05 3,615 3,615 3.160%, 01/17/06 2,300 2,300 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 3,779 3,779 Commodore, Ser 2003-2A, Cl A1MM 3.470%, 12/12/38 3,023 3,023 Duke Funding, Ser 2004-6B, Cl A1S1 2.680%, 04/10/06 4,929 4,929 Harwood Street Funding I, Ser 2004-1A, Cl NOTE 3.140%, 09/20/05 9,333 9,333 Harwood Street Funding II, Ser 2005-1A, Cl NOTE 3.140%, 06/25/06 6,572 6,572 Orchid Structured Finance, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 6,424 6,424 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 10,570 10,570 RMAC, Ser 2004-NS2A, Cl A1 3.210%, 12/12/25 1,171 1,171 RMAC, Ser 2004-NS3A, Cl A1 3.210%, 03/12/25 2,762 2,762 Saturn Ventures II 3.150%, 08/08/05 7,295 7,295 TIAA Real Estate, Ser 2003 1A, Cl A1 3.130%, 03/28/06 4,244 4,244 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 1,643 1,643 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC 3.030%, 09/15/05 1,183 1,183 ---------- 80,937 ---------- Total Asset-Backed Securities (Cost $98,403) ($ Thousands) 98,403 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- CASH EQUIVALENTS -- 4.5% First Union Cash Management Program 1,203,281 $ 1,203 SEI Daily Income Trust, Prime Obligation Fund, Cl A++ 71,684,150 71,684 ---------- Total Cash Equivalents (Cost $72,887) ($ Thousands) 72,887 ---------- COMMERCIAL PAPER (C) (E) -- 2.7% FINANCIALS -- 2.7% Ajax Bambino Funding 3.119%, 07/06/06 $ 6,572 6,553 Altimira Funding 3.004%, 06/16/05 856 855 Beethoven Funding 3.109%, 07/05/05 3,286 3,277 3.013%, 06/13/05 3,304 3,300 Brahms Funding 3.000%, 06/02/05 8,476 8,475 Capital One Multi-Asset Funding 3.025%, 06/20/05 2,629 2,625 3.002%, 06/07/05 2,300 2,299 Cobbler Funding 3.057%, 06/28/05 1,203 1,200 Cre-8 Funding 3.106%, 06/23/05 2,300 2,296 Golden Fish 3.065%, 06/20/05 2,134 2,131 3.065%, 06/22/05 3,421 3,414 3.055%, 06/21/05 986 984 3.053%, 06/14/05 2,643 2,640 Rams Funding 3.121%, 06/06/05 3,286 3,285 ---------- Total Commercial Paper (Cost $43,334) ($ Thousands) 43,334 ---------- MASTER NOTES (C) -- 1.5% Bank of America Master Notes 3.143%, 06/01/05 16,431 16,431 Bear Stearns Master Notes 3.234%, 06/01/05 7,887 7,887 ---------- Total Master Notes (Cost $24,318) ($ Thousands) 24,318 ---------- CERTIFICATES OF DEPOSIT (C) (F) -- 0.9% U.S. Trust 3.215%, 09/14/05 6,572 6,572 Washington Mutual Bank 3.270%, 08/18/05 7,756 7,756 ---------- Total Certificates of Deposit (Cost $14,328) ($ Thousands) 14,328 ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 53 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small Cap Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- U.S. TREASURY OBLIGATION -- 0.2% U.S. Treasury Bills (A) 2.900%, 08/25/05 $ 2,865 $ 2,846 ---------- Total U.S. Treasury Obligation (Cost $2,846) ($ Thousands) 2,846 ---------- REPURCHASE AGREEMENTS (C) -- 4.0% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $10,343,762 (collateralized by U.S. Government Obligation, par value $10,765,101, 0.000%, 12/28/05; with total market value $10,549,799) 10,343 10,343 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $8,216,221 (collateralized by various U.S. Government Obligations, ranging in par value $99,572- $4,961,784, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $8,380,137) 8,215 8,215 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $46,010,850 (collateralized by various U.S. Government Obligations, ranging in par value $1,920,133- $12,356,481, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $46,927,250) 46,007 46,007 ---------- Total Repurchase Agreements (Cost $64,565) ($ Thousands) 64,565 ---------- Total Investments -- 127.7% (Cost $1,888,671) ($ Thousands) 2,056,847 ---------- OTHER ASSETS AND LIABILITIES -- (27.7)% Payable upon Return on Securities Loaned (437,298) Payable for Investment Securities Purchased (15,638) Payable for Fund Shares Redeemed (916) Investment Advisory Fees Payable (688) Trustees' Fees Payable (5) Other Assets and Liabilities, Net 8,680 ---------- Total Other Assets and Liabilities (445,865) ---------- Net Assets -- 100.0% $1,610,982 ========== - -------------------------------------------------------------------------------- Value Description ($ Thousands) - -------------------------------------------------------------------------------- NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) $1,415,425 Undistributed net investment income 1,594 Accumulated net realized gain on investments and futures contracts 26,246 Net unrealized appreciation on investments 168,176 Net unrealized depreciation on futures contracts (459) ---------- Net Assets $1,610,982 ========== Net Asset Value, Offering and Redemption Price Per Share -- Class A ($1,610,876,231 / 112,893,492 shares) $14.27 ====== Net Asset Value, Offering and Redemption Price Per Share -- Class T ($105,367 / 7,437 shares) $14.17 ====== A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- CONTRACT UNREALIZED TYPE OF NUMBER OF VALUE EXPIRATION APPRECIATION CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- Russell 2000 Index E-Mini 875 $54,009 06/17/05 $(459) * Non-income producing security. + Real Estate Investment Trust ++ See Note 3 in Notes to Financial Statements (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9). The total value of securities on loan at May 31, 2005 was $422,437($Thousands). (C) This security was purchased with cash collateral held from securities lending (see Note 9). The total value of such securities as of May 31, 2005 was $437,298 ($Thousands). (D) This warrant represents a potential distribution settlement in a legal claim and does not have a strike price or expiration date. (E) The rate reported is the effective yield at time of purchase. (F) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (G) This security was issued for possible settlement of pending litigation and does not have an expiration date. (H) This security 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." (I) Security fair valued using methods determined in good faith by the Valuation Committee of the Board of Trustees. The total value of such securities as of May 31, 2005 was $1,367 ($ Thousands) and represented 0.08% of Net Assets. (J) Securities considered illiquid. The total value of such securities as of May 31, 2005 was $1,367 ($ Thousands) and represents 0.08% of Net Assets. ADR -- American Depositary Receipt Cl -- Class EXL -- Extendable Maturity MTN -- Medium Term Note PIPE -- Private Investment in Public Equity Ser -- Series Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 54 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Small/Mid Cap Equity Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++ 28.5% Financials 13.1% Consumer Discretionary 13.9% Information Technology 9.5% Health Care 9.1% Industrials 7.1% Short-Term Investments 5.0% Asset-Backed Securities 3.7% Materials 3.4% Energy 2.6% Utilities 1.9% Consumer Staples 1.4% Telecommunication Services 0.7% Certificates of Deposit 0.1% U.S. Treasury Obligations ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 95.9% CONSUMER DISCRETIONARY -- 16.9% 1-800 Contacts (B)* 17,000 $ 332 Abercrombie & Fitch, Cl A 13,700 785 Aeropostale* 9,000 245 Aftermarket Technology* 32,640 501 America's Car Mart* 28,980 620 American Axle & Manufacturing Holdings (B) 1,900 39 American Eagle Outfitters 58,100 1,644 American Greetings, Cl A (B) 26,700 694 American Woodmark 1,100 37 Ameristar Casinos 3,900 200 AnnTaylor Stores (B)* 61,650 1,588 Arctic Cat 22,900 495 Autoliv 58,900 2,734 Autonation (B)* 29,500 590 Barnes & Noble* 16,300 617 BJ's Wholesale Club* 73,200 2,207 Black & Decker 8,600 751 Bluegreen* 2,800 47 Borders Group 56,500 1,429 BorgWarner 27,700 1,481 Brown Shoe 15,700 551 Brunswick 21,200 912 Build-A-Bear Workshop (B)* 3,800 104 Cablevision Systems, Cl A (B)* 25,200 645 Cache* 46,788 612 Carter's (B)* 20,500 956 Catalina Marketing (B) 13,500 324 Cato, Cl A 47,800 1,380 CEC Entertainment* 6,650 270 Charming Shoppes* 77,000 695 Cheesecake Factory (B)* 40,600 1,434 Chico's FAS (B)* 33,654 1,151 CKE Restaurants* 23,900 394 Coach* 103,600 3,009 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Coca-Cola Bottling Consolidated 200 $ 10 Columbia Sportswear (B)* 3,500 158 Comfort Systems USA* 70,935 446 Commercial Vehicle Group* 1,800 33 Darden Restaurants (B) 36,200 1,176 Dave & Buster's (B)* 3,100 56 Design Within Reach* 101,700 1,426 DiamondRock Hospitality+ (G) (H)* 38,700 390 Dick's Sporting Goods (B)* 30,100 1,089 Dollar Thrifty Automotive Group* 24,100 867 Dollar Tree Stores (B)* 32,000 794 DreamWorks Animation SKG, Cl A* 24,100 709 Fairmont Hotels & Resorts 38,800 1,338 Fleetwood Enterprises (B)* 108,900 1,042 Fossil* 18,500 395 Four Seasons Hotels 22,900 1,653 Furniture Brands International 31,600 635 GameStop, Cl A (B)* 36,000 1,050 GameStop, Cl B* 498 13 Gaylord Entertainment* 20,200 849 Genesco* 11,800 404 Gentex 49,000 876 Getty Images* 29,800 2,230 Gildan Activewear* 14,000 710 Goodyear Tire & Rubber (B)* 106,000 1,525 Gray Television 51,023 600 Great Wolf Resorts* 22,184 489 Group 1 Automotive* 25,800 689 GSI Commerce (B)* 64,600 959 GTECH Holdings 32,000 904 Handleman 122,300 2,220 HOT Topic (B)* 79,417 1,705 Hovnanian Enterprises, Cl A (B)* 20,300 1,261 Jack in the Box* 33,700 1,398 Jakks Pacific* 14,000 289 Jarden (B)* 38,100 1,939 Jo-Ann Stores* 3,500 94 K2 (B)* 73,600 927 KB Home 21,200 1,432 Kerzner International (B)* 35,810 2,205 La Quinta (B)* 107,050 928 Lamar Advertising, Cl A* 42,400 1,773 Lear (B) 7,100 268 Lin TV, Cl A (B)* 28,500 415 Lions Gate Entertainment (B)* 131,824 1,372 Lodgenet Entertainment* 500 8 Lone Star Steakhouse & Saloon (B) 61,640 1,862 MarineMax* 31,300 861 Maytag (B) 24,200 353 Media General, Cl A 10,065 615 Movie Gallery 8,000 256 MSC Industrial Direct, Cl A 35,400 1,102 MTR Gaming Group* 66,300 680 New York (B)* 35,900 653 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 55 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small/Mid Cap Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Nexstar Broadcasting Group, Cl A (B)* 23,400 $ 131 NVR (B)* 1,400 1,063 O'Reilly Automotive* 400 22 Orange 21* 72,500 417 Panera Bread, Cl A (B)* 13,900 878 Pantry* 8,600 333 Parkervision (B)* 22,900 103 Parkervision, PIPE (G)(H)* 25,000 110 PDI* 2,400 29 Penn National Gaming (B)* 19,956 650 Petco Animal Supplies* 14,100 424 Petsmart (B) 56,000 1,779 PF Chang's China Bistro (B)* 25,500 1,511 Pinnacle Entertainment* 58,732 1,024 Polaris Industries (B) 12,300 645 Polo Ralph Lauren (B) 20,200 783 Primedia (B)* 126,100 460 RC2* 15,400 555 Red Robin Gourmet Burgers* 12,900 708 Reebok International (B) 60,973 2,482 Regis 37,800 1,428 Rent-A-Center* 43,900 1,039 Rinker Group ADR 26,200 1,225 Royal Caribbean Cruises (B) 27,600 1,273 Ruby Tuesday 18,930 479 Ryland Group (B) 39,300 2,692 Saks (B) 70,800 1,214 Scholastic* 19,100 717 Shoe Carnival* 1,500 28 ShopKo Stores* 24,900 590 Sonic (B)* 44,400 1,510 Sonic Solutions (B)* 51,200 782 Sotheby's Holdings, Cl A* 7,300 102 Sports Authority (B)* 53,700 1,718 Standard Motor Products 24,400 275 Standard-Pacific 8,800 705 Stanley Works 25,300 1,129 Starwood Hotels & Resorts Worldwide 32,800 1,836 Stein Mart* 5,500 132 Stride Rite 60,500 719 Talbots 12,520 371 Technical Olympic USA 47,500 1,040 Tekelec (B)* 74,600 1,015 Tenneco Automotive* 18,000 270 Theglobe.com* 184,900 21 Timberland, Cl A (B)* 19,200 708 Tractor Supply* 21,800 968 Trans World Entertainment (B)* 53,000 689 Triarc, Cl A (B) 42,400 664 Tupperware (B) 32,700 739 Urban Outfitters* 34,400 1,835 Value Line 6,900 251 Warnaco Group* 86,820 1,853 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- WESCO International* 6,300 $ 184 West Marine (B)* 31,550 523 Whirlpool (B) 21,400 1,472 Williams-Sonoma* 41,500 1,632 Wolverine World Wide 17,300 398 Wynn Resorts (B)* 30,100 1,410 XM Satellite Radio Holdings, Cl A (B)* 9,800 315 Yankee Candle* 24,100 760 Zale* 45,520 1,419 -------- 129,841 -------- CONSUMER STAPLES -- 2.4% Chattem* 7,700 330 Chiquita Brands International (B) 44,900 1,306 Church & Dwight 20,900 756 Corn Products International (B) 17,500 387 Dean Foods* 31,800 1,239 Del Monte Foods* 40,100 419 Energizer Holdings* 36,100 2,270 Gold Kist (B)* 46,000 960 J&J Snack Foods* 13,735 678 JM Smucker 10,300 513 Loews--Carolina Group 20,600 615 Longs Drug Stores (B) 37,200 1,527 Molson Coors Brewing, Cl B 12,900 754 Nash Finch 14,748 525 NBTY* 31,600 703 PepsiAmericas 32,400 785 Pilgrim's Pride (B) 34,800 1,227 Ralcorp Holdings 23,900 911 Ruddick 18,979 456 Sanderson Farms (B) 8,300 315 Spectrum Brands* 6,500 240 Supervalu 29,100 953 Tyson Foods, Cl A 44,100 814 -------- 18,683 -------- ENERGY -- 4.0% Ashland 48,200 3,292 BJ Services (B) 26,719 1,345 Cabot Oil & Gas 19,350 607 Cal Dive International* 15,300 695 Callon Petroleum* 3,700 52 Denbury Resources* 17,000 544 Encore Acquisition* 16,000 597 Energy Partners* 19,609 448 ENSCO International 12,500 416 EOG Resources (B) 21,700 1,083 Forest Oil (B)* 39,100 1,555 Frontier Oil 13,100 641 Giant Industries* 25,800 743 Houston Exploration* 16,200 826 - -------------------------------------------------------------------------------- 56 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Hydril* 18,500 $ 960 KCS Energy* 30,460 428 Laclede Group 3,200 96 National Oilwell Varco* 22,097 994 Patterson-UTI Energy 9,000 238 Penn Virginia 15,600 644 Petroleum Development* 12,500 327 Rowan* 29,100 800 Smith International 10,200 599 Spinnaker Exploration* 3 -- Stone Energy* 25,200 1,084 Sunoco 15,800 1,621 Superior Energy Services* 5,500 86 Swift Energy* 55,500 1,895 Syntroleum (B)* 40,800 354 Tesoro* 36,800 1,604 Ultra Petroleum* 23,400 637 Unit (B)* 19,436 758 Universal Compression Holdings* 4,800 164 Veritas DGC* 60,560 1,635 Vintage Petroleum (B) 73,000 2,016 W-H Energy Services* 9,100 197 Whiting Petroleum (B)* 26,410 913 -------- 30,894 -------- FINANCIALS -- 21.1% A.G. Edwards (B) 80,300 3,317 Aames Investment+* 48,400 447 ABC Bancorp 600 11 Acadia Realty Trust+ 36,200 614 Accredited Home Lenders Holding (B)* 42,800 1,796 ACE Cash Express* 300 7 Advance America Cash Advance Centers 15,500 189 Advanta, Cl B 52,299 1,290 Affiliated Managers Group (B)* 61,802 4,122 Affirmative Insurance Holdings 1,000 13 Alexandria Real Estate Equities+ 14,480 1,003 Allmerica Financial* 56,000 1,956 AMB Property+ (B) 43,900 1,770 Amcore Financial 27,655 770 Amegy Bancorp (B) 51,650 920 American Financial Group 20,100 652 American Home Mortgage Investment+ (B) 36,100 1,175 American Physicians Capital* 2,400 83 AmericanWest Bancorp* 900 18 AmerUs Group (B) 38,936 1,853 Anchor Bancorp Wisconsin 2,200 61 Apartment Investment & Management, Cl A+ 59,900 2,222 Arbor Realty Trust+ 2,800 75 Archstone-Smith Trust+ 45,500 1,675 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Argonaut Group (B)* 27,778 $ 582 Asset Acceptance Capital* 2,800 69 Associated Banccorp 17,200 575 Associated Estates Realty+ 56,200 486 Astoria Financial 33,900 934 AvalonBay Communities+ (B) 27,500 2,059 Bancfirst 500 39 BancTrust Financial Group 500 10 Bank of Hawaii 25,200 1,228 Bank of the Ozarks (B) 2,300 73 BioMed Realty Trust+* 5,700 127 Brandywine Realty Trust+ 30,200 850 BRE Properties, Cl A+ 25,500 983 Calamos Asset Management, Cl A* 15,700 380 Camden Property Trust+ 20,100 1,037 Capital Automotive+ (B) 12,904 462 Capital Crossing Bank* 1,400 45 Capital Trust, Cl A+ 1,800 63 CapitalSource (B)* 48,450 924 Cash America International 9,700 167 CBL & Associates Properties+ (B) 8,800 717 Cedar Shopping Centers+ 3,000 41 Center Financial 4,500 96 Central Coast Bancorp* 500 8 Central Pacific Financial 34,670 1,231 Ceres Group* 92,260 529 Chemical Financial 17,300 553 CIT Group 27,700 1,175 City National 35,600 2,529 Clark 4,900 71 Colonial BancGroup 30,700 684 Columbia Banking System 1,050 26 Commerce Bancshares (B) 24,400 1,189 Commerce Group 3,900 232 Commercial Capital Bancorp 800 14 Commercial Federal 25,600 640 Commercial Net Lease Realty+ 8,600 167 Community Bank System (B) 24,200 564 Community Trust Bancorp 600 18 CompuCredit (B)* 26,900 848 Corporate Office Properties Trust+ 102,851 2,873 Corus Bankshares 2,700 139 Crescent Real Estate Equity EQT+ 29,500 542 Delphi Financial Group, Cl A 23,958 1,016 DiamondRock Hospitality+* 10,000 112 Dime Community Bancshares 63,868 964 Downey Financial 36,200 2,716 E*Trade Financial* 221,800 2,739 East West Bancorp 23,300 784 ECC Capital+ 45,500 273 Education Realty Trust+ 31,500 541 Entertainment Properties Trust+ 2,500 111 Equity Inns+ 60,120 721 Equity Residential+ (B) 35,400 1,271 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 57 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small/Mid Cap Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Essex Property Trust+ 10,800 $ 864 Federal Realty Investment Trust+ 34,400 1,899 FelCor Lodging Trust+* 11,500 160 First American 8,800 341 First Bancorp Puerto Rico 1,000 38 First Busey 400 7 First Community Bancorp 1,800 80 First Community Bancshares 600 18 First Financial Bankshares (B) 500 21 First Financial Holdings 1,100 31 First Indiana (B) 1,000 27 First Industrial Realty Trust+ 5,800 225 First Midwest Bancorp 33,670 1,168 First Niagara Financial Group 6,734 88 First Potomac Realty Trust+ 23,195 525 First Republic Bank 17,700 568 FirstFed Financial* 35,525 1,925 Flagstar Bancorp (B) 81,500 1,610 Fremont General 23,200 499 Friedman Billings Ramsey Group, Cl A+ (B) 134,900 1,760 Frontier Financial 300 7 Gold Banc 86,700 1,204 Gramercy Capital+ 1,400 30 Greater Bay Bancorp (B) 38,548 969 Hancock Holding 1,200 39 Hanmi Financial 8,200 132 HCC Insurance Holdings (B) 18,700 733 Hibernia, Cl A 41,000 1,318 Highwoods Properties+ 34,700 955 Horace Mann Educators (B) 60,600 1,103 Horizon Financial 600 12 Host Marriott+ (B) 116,500 1,951 HRPT Properties Trust+ 154,500 1,828 Huntington Bancshares 47,500 1,108 Huron Consulting Group 36,200 832 IMPAC Mortgage Holdings+ (B) 17,400 346 Independent Bank 25,748 725 IndyMac Bancorp (B) 62,100 2,555 Innkeepers USA Trust+ 11,500 155 Instinet Group* 193,735 1,023 Investment Technology Group* 22,885 452 Investors Financial Services (B) 14,500 602 Irwin Financial 69,200 1,452 ITLA Capital* 600 30 Jones Lang LaSalle* 10,000 424 Kansas City Life Insurance 9,500 448 KNBT Bancorp 47,500 708 LandAmerica Financial Group (B) 27,700 1,557 LaSalle Hotel Properties+ 5,100 158 Lazard Cl A (B)* 44,100 955 LTC Properties+ 5,500 109 Macatawa Bank 805 28 Macerich+ 26,400 1,664 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Mack-Cali Realty+ 25,900 $ 1,142 MAF Bancorp 22,517 958 Maguire Properties+ 11,800 309 MainSource Financial Group 600 11 Marlin Business Services* 71,132 1,443 Max Re Capital 78,700 1,740 Medical Properties Trust+ 55,500 558 Mercantile Bank 1,000 41 Mercury General 700 39 MeriStar Hospitality+ (B)* 121,707 1,021 MFA Mortgage Investments+ 50,600 359 Mid-America Apartment Communities+ 2,700 109 Mid-State Bancshares 1,300 35 MoneyGram International 10,400 193 Montpelier Re Holdings 26,200 900 Nara Bancorp 7,400 103 Nasdaq Stock Market* 39,200 673 National Financial Partners (B) 16,440 629 National Health Investors+ 2,600 69 Navigators Group* 24,505 815 New Century Financial+ (B) 23,500 1,197 New Plan Excel Realty Trust+ 33,600 905 Novastar Financial+ (B) 9,000 331 Nuveen Investments, Cl A (B) 24,200 872 Ocwen Financial (B)* 8,200 59 Ohio Casualty 49,606 1,186 Old Second Bancorp (B) 1,400 39 Omega Healthcare Investors+ 10,900 130 Online Resources* 129,826 1,264 optionsXpress Holdings (B)* 49,100 663 Pacific Capital Bancorp 4,500 152 PartnerRe 22,600 1,493 Pennsylvania Real Estate Investment Trust+ 8,200 361 PFF Bancorp 27,650 803 Philadelphia Consolidated Holding (B)* 2,300 190 Placer Sierra Bancshares 2,100 54 Platinum Underwriters Holdings 20,410 620 Post Properties+ 29,200 958 Preferred Bank* 25,900 1,002 Prentiss Properties Trust+ 15,140 522 Presidential Life 23,200 351 Prologis+ 22,700 927 Prosperity Bancshares 1,600 43 Protective Life 9,300 374 Provident Financial Holdings 400 11 Providian Financial (B)* 31,100 554 Public Storage+ 15,200 914 RAIT Investment Trust+ (B) 41,700 1,193 Ramco-Gershenson Properties+ 3,600 100 Raymond James Financial 19,015 512 Reckson Associates Realty+ 51,100 1,614 Regency Centers+ 13,100 732 Reinsurance Group of America (B) 12,700 581 - -------------------------------------------------------------------------------- 58 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Republic Bancorp 80,210 $ 1,107 Royal Bancshares of Pennsylvania 600 14 Santander BanCorp 1,200 26 Selective Insurance Group 2,100 101 Shurgard Storage Centers, Cl A+ 50,600 2,209 Simon Property Group+ 33,700 2,316 SL Green Realty+ 30,600 1,896 Sovereign Bancorp 148,781 3,321 Stancorp Financial Group 12,600 943 Sterling Financial, Pennsylvania Shares 900 23 Sterling Financial, Washington Shares* 29,700 1,050 Stewart Information Services 15,200 597 Sunstone Hotel Investors+ 58,700 1,351 SVB Financial Group* 45,300 2,164 Taubman Centers+ 24,400 774 TierOne 28,000 675 Tompkins Trustco 300 12 Triad Guaranty* 11,291 612 Trustmark 51,672 1,476 U-Store-It Trust+ 58,200 1,100 UICI 16,000 402 United Fire & Casualty 2,000 79 Unitrin 24,400 1,215 Universal American Financial* 53,695 1,017 UnumProvident 45,700 839 Urstadt Biddle Properties, Cl A+ 2,200 36 Vineyard National Bancorp (B) 2,269 72 Virginia Commerce Bancorp* 31,685 708 W Holding 7,344 66 Washington Federal 22,780 520 Westcorp 3,700 179 Western Sierra Bancorp* 300 10 Whitney Holding 35,649 1,130 Wilshire Bancorp 6,200 83 Winston Hotels+ 6,500 68 Wintrust Financial 11,800 591 World Acceptance* 3,700 96 Zenith National Insurance (B) 17,200 1,090 -------- 162,554 -------- HEALTH CARE -- 12.3% Abgenix (B)* 178,700 1,287 Adeza Biomedical* 1,400 16 Affymetrix (B)* 5,800 310 Albany Molecular Research* 7,500 89 Alderwoods Group* 4,400 61 Alliance Imaging* 12,000 120 Alpharma, Cl A 72,000 927 American Medical Systems Holdings* 3,800 76 AMERIGROUP (B)* 26,898 1,055 Amsurg (B)* 21,750 586 Amylin Pharmaceuticals (B)* 68,400 1,093 Andrx (B)* 60,945 1,218 Animas (B)* 65,700 1,177 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Applera--Applied Biosystems Group 51,200 $ 1,096 Applera--Celera Genomics Group* 42,500 422 Apria Healthcare Group (B)* 15,900 501 Ariad Pharmaceuticals* 106,500 642 Array Biopharma* 66,800 417 Barr Pharmaceuticals (B)* 50,500 2,566 Bausch & Lomb (B) 32,700 2,554 Beckman Coulter 16,600 1,163 Bio-Rad Laboratories, Cl A (B)* 13,700 738 Biosite (B)* 15,300 837 Caraco Pharmaceutical Laboratories* 2,000 14 Cephalon (B)* 62,600 2,655 Cerner (B)* 16,200 1,059 Community Health Systems (B)* 72,600 2,640 Conmed* 6,500 204 Connetics (B)* 50,100 1,116 Cooper 6,600 436 Cubist Pharmaceuticals* 109,300 1,094 CV Therapeutics (B)* 161,400 3,264 Dade Behring Holdings* 11,300 755 Dendreon (B)* 116,500 616 Depomed (B)* 100,500 444 DJ Orthopedics* 79,300 2,201 Encysive Pharmaceuticals (B)* 173,000 1,765 Endo Pharmaceuticals Holdings* 57,100 1,159 Endologix* 113,600 494 Enzon Pharmaceuticals* 9,700 59 EPIX Pharmaceuticals (B)* 104,500 829 Exelixis* 80,000 562 Express Scripts* 12,200 1,127 First Horizon Pharmaceutical (B)* 81,300 1,528 Fisher Scientific International (B)* 38,400 2,398 Gen-Probe* 21,200 824 Genesis HealthCare* 11,400 496 Genitope (B)* 37,100 483 Henry Schein* 4,200 169 Hillenbrand Industries (B) 1,800 91 Human Genome Sciences* 95,700 1,079 ICOS* 3,500 76 IDX Systems* 37,400 1,193 II-VI* 5,400 89 Immucor (B)* 41,400 1,387 Inamed* 2,700 168 Incyte (B)* 101,200 772 InterMune (B)* 14,700 177 Invacare 14,345 640 Invitrogen (B)* 25,100 1,991 Kindred Healthcare (B)* 45,907 1,771 King Pharmaceuticals (B)* 79,500 752 Kos Pharmaceuticals (B)* 12,400 716 LabOne* 15,500 597 Laboratory of America Holdings (B)* 23,700 1,148 Lifecore Biomedical* 3,100 40 LifePoint Hospitals* 12,400 558 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 59 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small/Mid Cap Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Ligand Pharmaceuticals, Cl B* 135,700 $ 792 Manor Care 34,000 1,321 Martek Biosciences (B)* 32,500 1,215 Medarex (B)* 12,500 95 Medcath* 20,800 539 Medical Action Industries* 1,000 18 Medicis Pharmaceutical, Cl A (B) 45,100 1,271 Mentor (B) 13,000 532 Mettler Toledo International* 8,400 412 MGI Pharma (B)* 79,200 1,837 Millipore* 12,800 659 Nektar Therapeutics (B)* 99,369 1,816 Neurocrine Biosciences* 16,300 614 Neurometrix (B)* 65,437 1,050 NitroMed (B)* 76,000 1,455 Nu Skin Enterprises, Cl A 25,700 581 Nutraceutical International* 2,400 32 NuVasive* 66,148 1,039 Orthovita* 130,965 416 Parexel International* 20,880 381 PerkinElmer 46,800 895 Pharmion* 25,200 512 PolyMedica (B) 21,000 737 Pozen* 72,700 536 Prestige Brands Holdings* 67,300 1,144 Protein Design Labs (B)* 58,900 1,125 Res-Care* 3,900 52 Rigel Pharmaceuticals* 39,800 712 Rotech Healthcare* 23,000 580 Sepracor (B)* 1,000 61 Serologicals* 6,700 144 Sierra Health Services (B)* 6,800 449 Sybron Dental Specialties* 78,970 2,927 Symmetry Medical* 30,500 681 Syneron Medical (B)* 17,300 583 Techne (B)* 3,600 168 Telik* 59,100 843 Third Wave Technologies* 7,300 27 Triad Hospitals (B)* 43,200 2,191 Trimeris* 77,100 783 United Surgical Partners International (B)* 1,800 87 United Therapeutics (B)* 3,100 155 Universal Health Services, Cl B 7,100 415 Varian Medical Systems* 18,900 711 Watson Pharmaceuticals (B)* 34,500 1,037 West Pharmaceutical Services 4,900 136 Zymogenetics* 1,300 23 -------- 94,376 -------- INDUSTRIALS -- 11.6% Actuant, Cl A (B)* 27,395 1,233 Acuity Brands 50,750 1,246 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Advisory Board* 4,400 $ 199 AGCO (B)* 42,000 771 Airtran Holdings (B)* 53,600 523 Alaska Air Group (B)* 38,000 1,122 Albany International, Cl A 24,700 772 Alliant Techsystems (B)* 7,400 531 Ametek 17,030 651 AMN Healthcare Services* 3,800 55 Arkansas Best 6,700 219 Arlington Tankers (B) 29,500 580 Armor Holdings (B)* 12,500 472 Artesyn Technologies (B)* 87,112 717 Aviall* 5,732 176 Banta (B) 51,680 2,270 BE Aerospace* 41,532 601 Blount International* 40,600 717 BlueLinx Holdings 6,000 73 Briggs & Stratton 30,800 1,043 Bright Horizons Family Solutions* 38,500 1,425 Brink's 35,900 1,120 Bucyrus International, Cl A 21,000 749 Chicago Bridge & Iron 16,900 365 Clean Harbors (B)* 4,600 95 Columbus McKinnon* 4,300 41 Consolidated Graphics* 2,700 114 Corinthian Colleges (B)* 44,000 680 Corporate Executive Board 26,400 1,842 CoStar Group* 21,700 872 Crane 12,700 334 Cummins (B) 30,100 2,045 Curtiss-Wright 15,677 857 Deluxe 12,400 501 Duratek* 800 18 EDO 41,893 1,193 Education Management* 61,900 2,009 EGL* 24,800 472 Engineered Support Systems 25,550 996 EnPro Industries* 28,100 761 Esterline Technologies* 6,600 257 ExpressJet Holdings* 88,800 766 Franklin Electric 1,600 62 Frozen Food Express Industries* 2,700 29 GATX (B) 28,600 954 Genesee & Wyoming, Cl A* 29,219 816 Geo Group* 2,400 58 Goodrich 60,700 2,541 Graco 5,900 206 GrafTech International* 225,450 992 Griffon* 39,500 787 Harsco 1,200 70 Herman Miller 49,100 1,429 HUB Group, Cl A* 27,964 768 Infospace (B)* 22,200 753 - -------------------------------------------------------------------------------- 60 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- infoUSA 3,400 $ 41 Integrated Electrical Services (B)* 38,300 58 Iron Mountain (B)* 22,000 631 ITT Educational Services (B)* 43,500 1,974 JB Hunt Transport Services (B) 57,900 1,163 JLG Industries 33,800 862 John H. Harland 24,400 919 Kennametal 34,370 1,512 Korn/Ferry International* 1,200 19 Labor Ready* 25,459 526 Laidlaw International (B)* 119,000 2,647 Landstar System* 7,900 267 Laureate Education* 24,260 1,133 Lennox International 48,000 1,020 M/I Homes 14,000 707 Mercury Computer Systems* 19,500 564 Mesa Air Group (B)* 17,800 114 Molecular Devices* 5,500 106 Monster Worldwide (B)* 48,600 1,282 Moog, Cl A* 5,900 179 Mueller Industries 38,600 1,042 Navigant Consulting* 73,300 1,682 NCO Group* 4,700 93 NN 1,800 23 Nordson 4,000 124 Oshkosh Truck 10,900 869 Pacer International* 22,406 511 Perini* 6,800 103 PHH* 22,400 537 Pinnacle Airlines (B)* 10,500 103 Power-One* 32,700 179 PRA International* 1,300 34 Quanta Services (B)* 91,370 825 R.H. Donnelley* 25,484 1,567 RailAmerica* 7,200 84 Republic Airways Holdings* 1,900 24 Resources Connection (B)* 69,900 1,392 Ritchie Bros. Auctioneers 20,600 766 Ryder System 48,000 1,764 Sauer-Danfoss 1,700 33 School Specialty (B)* 17,680 693 Shiloh Industries* 900 10 Skywest 15,800 288 Sourcecorp* 11,600 248 SPX (B) 18,400 817 Steelcase, Cl A 24,075 311 Stericycle* 8,000 397 Stewart Enterprises, Cl A* 104,974 621 Swift Transportation (B)* 9,000 221 Sypris Solutions 31,900 336 TeleTech Holdings* 13,700 112 Terex (B)* 16,500 652 Thomas & Betts* 46,700 1,442 Timken 7,200 169 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- TNS* 3,700 $ 81 TurboChef Technologies (B)* 58,700 652 Unifirst 3,000 110 United Rentals (B)* 127,340 2,557 United Stationers* 16,005 785 Universal Forest Products 14,100 561 USA Truck* 2,700 55 UTI Worldwide 17,900 1,320 Ventiv Health* 800 16 Wabash National (B) 28,296 705 Wabtec 47,708 988 Walter Industries (B) 37,300 1,582 Washington Group International (B)* 35,300 1,695 Watts Water Technologies, Cl A 21,593 752 Werner Enterprises 30,635 576 Wright Express* 41,500 664 York International 33,850 1,395 -------- 89,238 -------- INFORMATION TECHNOLOGY -- 18.0% Acxiom 18,000 332 Adaptec* 176,000 700 Advanced Micro Devices* 11,000 180 Aeroflex* 47,831 383 Agere Systems* 52,370 712 Agilysys 46,800 720 Akamai Technologies* 71,400 1,002 Altera* 105,300 2,337 American Reprographics* 40,400 602 American Science & Engineering* 2,300 88 American Tower, Cl A* 37,500 676 AMIS Holdings* 64,300 772 Amkor Technology (B)* 60,900 216 Amphenol, Cl A 60,000 2,543 answerthink* 80,208 318 Anteon International* 10,530 465 aQuantive (B)* 90,300 1,390 Arris Group (B)* 155,865 1,350 Arrow Electronics* 4,500 126 Aspen Technology (B)* 88,900 466 Asyst Technologies* 111,500 469 ATI Technologies* 44,600 672 ATMI (B)* 55,432 1,558 Avaya* 241,500 2,210 Avid Technology (B)* 29,600 1,736 Avocent* 40,700 1,140 Axcelis Technologies* 62,200 414 Belden CDT (B) 9,800 197 Benchmark Electronics* 19,600 621 BISYS Group (B)* 30,200 461 Black Box 14,900 512 Blackbaud 35,900 494 BMC Software (B)* 61,100 1,040 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 61 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small/Mid Cap Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Brooks Automation* 136,400 $ 2,057 C-COR* 149,100 1,026 CACI International, Cl A* 7,260 468 Cadence Design Systems (B)* 59,000 824 CCC Information Services Group* 2,400 56 Ceridian* 42,800 816 Certegy 15,500 582 Check Point Software Technologies* 47,400 1,076 Checkfree (B)* 36,000 1,344 Citrix Systems (B)* 67,200 1,691 CNET Networks* 136,400 1,416 Cognex (B) 63,848 1,657 CommScope* 34,340 581 Conexant Systems* 165,500 237 Convergys* 42,800 583 Credence Systems (B)* 87,500 693 Cree (B)* 31,700 952 CSG Systems International* 8,600 164 Cymer (B)* 86,088 2,446 Cypress Semiconductor* 59,919 775 Digital River* 3,000 83 Digitas (B)* 111,200 1,231 Diodes* 4,600 153 Dionex* 3,600 161 Dolby Laboratories, Cl A (B)* 27,300 544 Earthlink* 161,800 1,717 Emulex (B)* 67,500 1,276 Entegris* 78,770 764 eResearch Technology* 38,700 474 F5 Networks* 3,300 169 FARO Technologies* 36,800 1,024 FEI (B)* 72,100 1,501 Filenet* 22,650 631 Flir Systems* 8,900 239 Foundry Networks* 46,200 427 Genesis Microchip (B)* 11,900 197 Global Payments (B) 10,500 728 Harris 5,400 155 Hutchinson Technology (B)* 50,600 2,093 Imation 11,500 434 Informatica* 152,328 1,307 Ingram Micro, Cl A* 45,200 715 Integrated Device Technology* 75,060 918 Inter-Tel 7,600 156 Intermix Media (B)* 73,000 433 International Rectifier (B)* 14,200 678 Intersil, Cl A 93,600 1,756 Intervideo* 30,188 458 Intrado (B)* 3,800 49 Iomega 153,500 474 Itron (B)* 6,500 267 IXYS* 4,400 61 j2 Global Communications (B)* 5,500 193 Jack Henry & Associates 67,700 1,198 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Kanbay International* 34,811 $ 723 KFX (B)* 38,500 507 Komag (B)* 9,600 277 Lam Research (B)* 43,100 1,322 Lattice Semiconductor (B)* 288,300 1,217 Leadis Technology (B)* 72,400 496 LeCroy* 2,800 46 LSI Logic* 215,800 1,588 Magma Design Automation (B)* 1,900 15 Manhattan Associates* 72,300 1,536 MAXIMUS (B) 49,200 1,687 Maxtor (B)* 337,014 1,850 McAfee* 14,700 422 MEMC Electronic Materials (B)* 61,900 848 Mentor Graphics* 105,900 1,089 Mercury Interactive (B)* 26,400 1,191 Micrel (B)* 117,000 1,357 Micromuse (B)* 160,740 1,009 MicroStrategy, Cl A (B)* 900 50 MPS Group* 112,126 1,052 MTS Systems 700 22 Napster (B)* 123,600 524 Netease.com ADR (B)* 8,600 444 NetIQ* 85,660 946 Novellus Systems* 46,500 1,239 O2Micro International* 86,300 1,075 Omnivision Technologies (B)* 52,800 835 Openwave Systems (B)* 60,300 938 OSI Systems (B)* 46,300 690 Parametric Technology (B)* 236,684 1,425 Paxar* 65,900 1,161 Per-Se Technologies* 5,100 97 Perot Systems, Cl A* 14,200 183 Photronics (B)* 19,500 449 Pixelworks* 175,000 1,500 Plantronics 48,000 1,652 PMC - Sierra* 39,500 346 Polycom* 169,300 2,897 Power Integrations* 8,500 202 Progress Software* 4,600 134 ProQuest* 26,000 835 QAD 2,100 15 Red Hat (B)* 118,600 1,499 Reynolds & Reynolds, Cl A 41,600 1,135 RF Micro Devices* 240,100 1,116 RightNow Technologies* 60,900 569 Rogers* 5,500 228 RSA Security* 74,500 916 S1* 96,100 431 Sabre Holdings, Cl A 105,400 2,115 SafeNet (B)* 31,000 974 Satyam Computer Services 60,100 1,485 ScanSoft (B)* 227,800 925 Seachange International* 69,500 549 - -------------------------------------------------------------------------------- 62 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Serena Software (B)* 22,500 $ 440 Sigmatel* 10,700 242 Silicon Image* 6,900 81 Sina (B)* 15,295 426 Sirf Technology Holdings* 110,800 1,569 Spatialight (B)* 117,000 710 SRA International, Cl A* 10,752 365 SS&C Technologies 31,700 948 Standard Microsystems* 27,992 455 Storage Technology* 36,100 1,165 Stratasys (B)* 30,601 990 Sybase (B)* 43,400 885 Synopsys* 18,700 338 Tech Data* 29,700 1,066 Teradyne (B)* 85,400 1,111 Tessera Technologies* 26,100 768 TIBCO Software* 204,600 1,297 Titan* 83,700 1,841 Trident Microsystems* 4,700 100 TTM Technologies* 84,100 668 Ultratech* 31,998 561 Unisys* 27,900 202 United Online 30,600 396 Veeco Instruments (B)* 5,900 89 Western Digital* 250,100 3,754 Zebra Technologies, Cl A (B)* 18,034 770 -------- 138,080 -------- MATERIALS -- 4.6% Airgas 40,221 965 AK Steel Holding (B)* 48,600 372 AMCOL International 45,335 880 Apex Silver Mines (B)* 53,500 720 Aptargroup 21,400 1,070 Arch Coal 39,400 1,909 Buckeye Technologies* 84,700 700 Century Aluminum* 31,317 702 Cleveland-Cliffs (B) 11,900 698 Commercial Metals 19,110 500 Crown Holdings* 101,100 1,505 Cytec Industries 33,684 1,403 Eastman Chemical (B) 51,400 3,021 Ferro 31,400 604 Florida Rock Industries (B) 9,076 594 FMC* 30,200 1,675 Foundation Coal Holdings 44,100 1,124 Greif, Cl A (B) 21,800 1,584 Headwaters (B)* 24,400 807 Jacuzzi Brands* 57,400 586 Louisiana-Pacific 21,700 546 Lubrizol 27,800 1,095 Lyondell Chemical 300 7 Massey Energy (B) 15,400 623 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- NS Group* 18,400 $ 530 OM Group* 15,200 383 Owens-Illinois* 22,500 579 Peabody Energy 11,600 554 PolyOne* 80,100 538 Quanex (B) 16,350 848 RPM International 34,500 607 RTI International Metals* 19,450 533 Schweitzer-Mauduit International 16,400 492 Silgan Holdings 3,400 194 Steel Dynamics (B) 15,700 422 Trex (B)* 26,600 1,025 United States Steel (B) 34,900 1,388 USG (B)* 21,100 967 WCA Waste* 86,930 773 Wellman 75,500 849 Wheeling-Pittsburgh (B)* 39,600 703 -------- 35,075 -------- TELECOMMUNICATION SERVICES -- 1.7% ADC Telecommunications* 28,287 514 Adtran 35,500 780 Alaska Communications Systems Group (B) 8,500 80 Amdocs* 57,100 1,556 Aspect Communications* 17,700 170 Brightpoint* 64,300 1,209 Centennial Communications* 6,600 86 CenturyTel 53,300 1,748 Fairpoint Communications (B)* 67,000 1,043 General Communication, Cl A* 9,300 77 Iowa Telecommunications Services 32,852 618 New Skies Satellites Holdings* 34,000 602 Nextel Partners, Cl A (B)* 48,400 1,149 North Pittsburgh Systems 800 15 Novatel Wireless (B)* 109,800 1,369 Premiere Global Services* 104,520 1,176 Saga Communications, Cl A* 1,800 25 Spectrasite* 11,800 753 Talk America Holdings* 44,200 393 West* 2,100 74 -------- 13,437 -------- UTILITIES -- 3.3% AGL Resources 46,528 1,640 Allete 19,853 953 Avista 32,400 571 Centerpoint Energy (B) 76,300 935 Cleco 9,100 190 CMS Energy (B)* 80,400 1,064 DPL 21,900 554 Duquesne Light Holdings (B) 45,900 873 El Paso Electric* 2,500 50 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 63 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small/Mid Cap Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Energen 48,126 $ 3,137 Idacorp 17,007 482 National Fuel Gas 5,000 140 New Jersey Resources 18,223 822 Northeast Utilities 29,800 590 Northwest Natural Gas 12,695 460 NorthWestern 43,900 1,272 OGE Energy (B) 20,500 569 Pepco Holdings 7,000 158 Pinnacle West Capital 13,500 596 PNM Resources 59,250 1,726 Puget Energy 23,700 539 Reliant Energy* 85,700 1,054 Sempra Energy 15,000 595 Southern Union (B)* 21,000 514 UGI 48,156 1,277 UIL Holdings 10,100 524 Unisource Energy 18,400 529 Vectren (B) 21,244 580 Westar Energy 24,200 558 WGL Holdings 42,100 1,370 Wisconsin Energy 28,000 1,016 -------- 25,338 -------- Total Common Stock (Cost $681,879) ($ Thousands) 737,516 -------- FOREIGN STOCK -- 0.8% Canaccord Capital 52,000 405 Compton Petroleum* 35,000 300 Deer Creek Energy* 39,000 431 Dundee+ 27,000 568 Dundee Wealth Management 62,200 461 First Quantum Minerals* 44,500 739 Granded Cache Coal* 85,000 698 OPTI Canada* 43,500 883 Railpower Technologies* 109,600 490 Western Oil Sands, Cl A* 48,000 740 -------- Total Foreign Stock (Cost $5,270) ($ Thousands) 5,715 -------- CORPORATE OBLIGATIONS (C) (E) -- 12.6% FINANCIALS -- 12.6% ASIF Global Financing XV (F) 3.020%, 09/02/05 $ 308 307 Allstate Life Global Funding II MTN (F) 3.080%, 06/15/06 1,524 1,524 American General Finance (F) 3.090%, 06/15/06 2,982 2,982 Bear Stearns EXL 3.100%, 06/15/06 5,898 5,898 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($Thousands) ($ Thousands) - -------------------------------------------------------------------------------- CCN Bluegrass (F) 3.170%, 02/21/06 $ 2,154 $ 2,154 CIT Group MTN 3.260%, 05/12/06 8,284 8,284 3.199%, 07/29/05 378 378 3.163%, 04/19/06 828 829 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 1,657 1,657 Countrywide Home Loans MTN, Ser A 3.509%, 03/21/06 2,717 2,717 Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 994 994 3.152%, 06/23/05 2,021 2,021 3.040%, 11/30/05 3,777 3,777 2.810%, 01/31/06 729 729 Dekabank (F) 3.206%, 05/19/06 6,130 6,129 Five Finance MTN (F) 3.100%, 09/22/05 4,705 4,704 Harrier Finance Funding MTN (F) 3.034%, 09/15/05 961 961 Harrier Finance Funding MTN, Ser 1 (F) 3.016%, 06/15/05 2,883 2,883 Irish Life & Permanent MTN, Ser X (F) 3.101%, 06/22/06 3,082 3,081 Jackson National Life Funding (F) 3.064%, 05/01/06 7,289 7,289 K2 MTN (F) 2.995%, 12/12/05 199 199 Lakeside Funding 3.120%, 06/08/05 1,657 1,657 Liberty Lighthouse US Capital MTN (F) 3.118%, 05/10/06 3,313 3,311 Morgan Stanley EXL 3.089%, 05/04/06 1,160 1,160 Morgan Stanley EXL, Ser S 3.085%, 06/02/06 1,657 1,656 Nationwide Building Society (F) 3.090%, 01/06/06 3,313 3,313 3.083%, 10/28/05 1,657 1,657 Northern Rock (F) 3.099%, 02/03/06 3,413 3,413 Pacific Life Global Funding (F) 3.080%, 06/13/06 2,485 2,485 Premium Asset Trust, Ser 2004-01 (F) 3.100%, 02/06/06 2,452 2,454 Premium Asset Trust, Ser 2004-10 (F) 3.100%, 04/14/06 4,639 4,639 SLM EXL, Ser S 3.090%, 05/15/06 3,645 3,645 SLM MTN, Ser X (F) 3.090%, 06/20/06 6,627 6,627 - -------------------------------------------------------------------------------- 64 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($Thousands) ($ Thousands) - -------------------------------------------------------------------------------- White Pine Finance MTN, Ser 1 3.071%, 11/01/05 $ 1,458 $ 1,458 -------- Total Corporate Obligations (Cost $96,972) ($ Thousands) 96,972 -------- ASSET-BACKED SECURITIES (C) (E) (F) -- 6.5% AUTOMOTIVE -- 1.2% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 8,016 8,016 Drivetime Auto Owner Trust, Ser 2005-A, Cl A1 3.110%, 03/15/06 790 790 -------- 8,806 -------- MORTGAGE RELATED SECURITIES -- 5.3% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 2,121 2,121 Blue Heron Funding, Ser 6A, Cl A1 3.120%, 06/21/06 663 663 Blue Heron Funding, Ser 9A, Cl A1 3.129%, 02/22/06 3,314 3,314 CCN Independence IV 3.160%, 10/17/05 1,822 1,822 3.160%, 01/17/06 1,160 1,160 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 1,905 1,905 Commodore, Ser 2003-2A, Cl A1MM 3.100%, 12/12/38 1,524 1,524 Duke Funding, Ser 2004-6B, Cl A1S1 2.680%, 04/10/06 2,485 2,485 Harwood Street Funding I, Ser 2004-1A, Cl NOTE 3.140%, 09/20/05 4,705 4,705 Harwood Street Funding II, Ser 2005-1A, Cl NOTE 3.141%, 06/25/06 3,313 3,313 Orchid Structured Finance, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 3,239 3,239 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 5,329 5,329 RMAC, Ser 2004-NS2A, Cl A1 3.080%, 06/13/05 590 590 RMAC, Ser 2004-NS3A, Cl A1 3.090%, 06/12/05 1,392 1,392 Saturn Ventures II 3.150%, 08/08/05 3,678 3,678 TIAA Real Estate, Ser 2003 1A, Cl A1 3.131%, 03/28/06 2,140 2,140 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 $ 828 $ 828 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC 3.030%, 09/15/05 596 596 -------- 40,804 -------- Total Asset-Backed Securities (Cost $49,610) ($ Thousands) 49,610 -------- CASH EQUIVALENT -- 3.3% SEI Daily Income Trust, Prime Obligation Fund, Cl A++ 25,650,085 25,650 -------- Total Cash Equivalent (Cost $25,650) ($ Thousands) 25,650 -------- COMMERCIAL PAPER (C) (D) -- 2.8% FINANCIALS -- 2.8% Ajax Bambino Funding 3.119%, 07/06/05 3,313 3,304 Altimira Funding 3.004%, 06/16/05 432 431 Beethoven Funding 3.109%, 07/05/05 1,657 1,652 3.013%, 06/13/05 1,666 1,664 Brahms Funding 3.000%, 06/02/05 4,273 4,273 Capital One Multi-Asset Funding 3.025%, 06/20/05 1,325 1,323 3.002%, 06/07/05 1,160 1,159 Cobbler Funding 3.057%, 06/28/05 606 605 Cre-8 Funding 3.106%, 06/23/05 1,160 1,158 Golden Fish 3.066%, 06/22/05 1,724 1,721 3.065%, 06/20/05 1,076 1,074 3.055%, 06/21/05 497 496 3.053%, 06/14/05 1,332 1,331 Rams Funding 3.121%, 06/06/05 1,657 1,656 -------- Total Commercial Paper (Cost $21,847) ($ Thousands) 21,847 -------- MASTER NOTES (C) -- 1.6% Bank of America Master Notes 3.143%, 06/01/05 8,284 8,284 Bear Stearns Master Notes 3.234%, 06/01/05 3,976 3,976 -------- Total Master Notes (Cost $12,260) ($ Thousands) 12,260 -------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 65 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS Small/Mid Cap Equity Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- CERTIFICATES OF DEPOSIT (C) (E) -- 0.9% U.S. Trust 3.325%, 09/12/05 $ 3,313 $ 3,313 Washington Mutual Bank 3.270%, 08/18/05 3,910 3,910 -------- Total Certificates of Deposit (Cost $7,223) ($ Thousands) 7,223 -------- U.S. TREASURY OBLIGATION -- 0.2% U.S. Treasury Bills (A) 2.986%, 08/25/05 1,360 1,351 -------- Total U.S. Treasury Obligation (Cost $1,351) ($ Thousands) 1,351 -------- REPURCHASE AGREEMENTS (C) -- 4.2% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $5,214,773 (collateralized by U.S. Government Obligation, par value $5,427,189, 0.000%, 12/28/05; with total market value $5,318,646) 5,214 5,214 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $4,142,180 (collateralized by various U.S. Government Obligations, ranging in par value $50,199- $2,501,466, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $4,224,818) 4,142 4,142 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $23,196,215 (collateralized by various U.S. Government Obligations, ranging in par value $968,028- $6,229,478, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $23,658,215) 23,194 23,194 -------- Total Repurchase Agreements (Cost $32,550) ($ Thousands) 32,550 -------- Total Investments -- 128.8% (Cost $934,612) ($ Thousands) 990,694 -------- - -------------------------------------------------------------------------------- Value Description ($ Thousands) - -------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (28.8)% Payable upon Return on Securities Loaned $(220,462) Payable for Investment Securities Purchased (3,623) Payable for Fund Shares Redeemed (942) Investment Advisory Fees Payable (356) Trustees' Fees Payable (2) Other Assets and Liabilities, Net 3,588 --------- Total Other Assets and Liabilities (221,797) --------- Net Assets -- 100.0% $ 768,897 ========= NET ASSETS: Paid-in-Capital -- Class A (unlimited authorization -- no par value) $ 692,619 Undistributed net investment income 796 Accumulated net realized gain on investments and futures contracts 18,620 Net unrealized appreciation on investments 56,082 Net unrealized appreciation on futures contracts 780 --------- Net Assets $ 768,897 ========= Net Asset Value, Offering and Redemption Price Per Share -- Class A ($768,896,720 / 6,428,048 shares) $119.62 ======= A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- CONTRACT UNREALIZED TYPE OF NUMBER OF VALUE EXPIRATION APPRECIATION CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- S&P Mid 400 Index E-Mini 101 $ 6,774 06/17/05 $306 Russell 2000 Index E-Mini 188 11,604 06/17/05 474 ---- $780 ---- * Non-income producing security. + Real Estate Investment Trust ++ See Note 3 in Notes to Financial Statements. (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9). The total value of securities on loan at May 31, 2005 was $213,744 ($ Thousands). (C) This security was purchased with cash collateral held from securities lending (see Note 9). The total value of such securities as of May 31, 2005 was $220,462 ($ Thousands). (D) The rate reported is the effective yield at time of purchase. (E) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (F) 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." (G) Security fair valued using methods determined in good faith by the Valuation Committee of the Board of Trustees. The total value of such securities as of May 31, 2005 was $500 ($ Thousands) and represented 0.07% of Net Assets. (H) Securities considered illiquid. The total value of such securities as of May 31, 2005 was $500 ($ Thousands) and represents 0.07% of Net Assets. ADR -- American Depositary Receipt Cl -- Class EXL -- Extendable Maturity MTN -- Medium Term Note PIPE -- Private Investment in Public Equity Ser -- Series Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 66 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS PREPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] Sector Weightings (unaudited)++ 20.3% U.S. Treasury Obligations 19.9% Financials 17.8% Asset-Backed Securities 15.2% U.S. Government Mortgage Backed 10.0% Short-Term Investments 7.7% U.S. Government Agency Obligations 1.9% Industrials 1.4% Utilities 1.3% Consumer Discretionary 1.2% Telecommunication Services 0.9% Energy 0.8% Certificate of Deposit 0.8% Regional Agencies 0.3% Consumer Staples 0.2% Foreign Bonds 0.2% Health Care 0.1% Materials 0.0% Information Technology 0.0% Municipal Bond 0.0% Options ++Percentages based on total investments. - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- CORPORATE OBLIGATIONS -- 35.1% CONSUMER DISCRETIONARY -- 1.8% COX Communications 7.875%, 08/15/09 $ 440 $ 491 7.125%, 10/01/12 1,540 1,717 4.625%, 06/01/13 280 270 Comcast 7.050%, 03/15/33 (K) 1,185 1,417 6.500%, 01/15/15 (K) 1,380 1,539 5.850%, 01/15/10 (K) 1,255 1,325 5.500%, 03/15/11 1,830 1,911 Comcast Cable Communications 8.375%, 03/15/13 1,810 2,217 6.750%, 01/30/11 5,950 6,569 6.375%, 01/30/06 360 365 Continental Cablevision 9.000%, 09/01/08 710 804 8.300%, 05/15/06 875 909 DaimlerChrysler 8.500%, 01/18/31 615 754 7.450%, 03/01/27 705 778 7.300%, 01/15/12 1,995 2,195 6.500%, 11/15/13 845 895 Federated Department Stores 6.900%, 04/01/29 135 154 6.790%, 07/15/27 580 648 Ford Motor 7.450%, 07/16/31 (K) 9,776 8,175 6.375%, 02/01/29 5,500 4,249 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- General Motors 8.375%, 07/15/33 (K) $ 8,480 $ 6,496 8.250%, 07/15/23 9,780 7,438 Liberty Media 5.700%, 05/15/13 (K) 705 655 4.510%, 09/17/06 (F) 2,281 2,292 May Department Stores 6.700%, 07/15/34 (K) 375 414 5.750%, 07/15/14 500 525 News America 7.300%, 04/30/28 475 545 7.280%, 06/30/28 725 831 6.200%, 12/15/34 (K) 1,665 1,722 News America Holdings 7.750%, 01/20/24 395 469 Pulte Homes 5.200%, 02/15/15 815 799 TCI Communications 7.875%, 02/15/26 565 713 Target 4.000%, 06/15/13 355 344 Time Warner 8.375%, 07/15/33 (K) 1,670 2,212 8.180%, 08/15/07 500 539 7.700%, 05/01/32 (K) 1,595 2,014 7.700%, 05/01/32 5,000 6,313 7.625%, 04/15/31 335 418 7.570%, 02/01/24 1,630 1,984 6.875%, 05/01/12 350 394 Viacom 7.875%, 07/30/30 450 533 5.625%, 08/15/12 550 561 ---------- 75,593 ---------- CONSUMER STAPLES -- 0.5% Albertsons 8.000%, 05/01/31 300 350 7.750%, 06/15/26 870 966 Altria Group 7.750%, 01/15/27 1,765 2,069 7.000%, 11/04/13 (K) 1,770 1,965 Delhaize America 9.000%, 04/15/31 420 505 General Mills 5.125%, 02/15/07 800 814 Kellogg 2.875%, 06/01/08 2,085 2,006 Kraft Foods 6.500%, 11/01/31 (K) 715 827 6.250%, 06/01/12 395 432 5.625%, 11/01/11 735 777 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 67 - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Nabisco 7.550%, 06/15/15 $ 2,675 $ 3,247 Philip Morris Capital 7.500%, 07/16/09 1,155 1,247 RJ Reynolds Tobacco Holdings, Ser B 7.875%, 05/15/09 1,630 1,679 7.750%, 05/15/06 3,760 3,840 Sara Lee 3.875%, 06/15/13 685 638 ---------- 21,362 ---------- ENERGY -- 1.3% Alberta Energy 7.375%, 11/01/31 1,070 1,331 Amerada Hess 7.300%, 08/15/31 5,725 6,659 7.125%, 03/15/33 640 734 Anadarko Finance, Ser B 7.500%, 05/01/31 2,383 2,979 Apache 6.250%, 04/15/12 945 1,054 BP Canada Finance 3.625%, 01/15/09 2,740 2,710 Canadian National Resources (K) 4.900%, 12/01/14 1,145 1,146 Conoco (K) 6.950%, 04/15/29 4,955 6,119 Conoco Funding 7.250%, 10/15/31 885 1,141 6.350%, 10/15/11 1,540 1,699 ConocoPhillips (K) 5.900%, 10/15/32 665 734 4.750%, 10/15/12 2,310 2,350 Consolidated Natural Gas, Ser A 5.000%, 03/01/14 625 629 Devon Energy 7.950%, 04/15/32 3,725 4,827 Devon Financing 7.875%, 09/30/31 1,240 1,591 El Paso 6.950%, 06/01/28 2,250 1,901 El Paso MTN 7.800%, 08/01/31 2,100 1,966 7.750%, 01/15/32 3,375 3,147 Encana 6.500%, 08/15/34 500 569 Kinder Morgan Energy Partners 5.800%, 03/15/35 350 350 5.125%, 11/15/14 615 618 Occidental Petroleum 6.750%, 01/15/12 1,000 1,126 Pemex Master Trust 7.375%, 12/15/14 1,080 1,210 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Pioneer Natural Resources (K) 5.875%, 07/15/16 $ 540 $ 538 Valero Energy 7.500%, 04/15/32 515 615 XTO Energy 7.500%, 04/15/12 630 721 6.250%, 04/15/13 3,195 3,451 4.900%, 02/01/14 (K) 1,020 1,005 YPF Sociedad Anonima MTN, Ser A 7.750%, 08/27/07 3,000 3,135 ---------- 56,055 ---------- FINANCIALS -- 23.7% ASIF Global Financing XIX (C) 4.900%, 01/17/13 910 918 ASIF Global Financing XV (F) (J) (L) 3.020%, 09/02/05 1,825 1,825 Allstate Financial Global Funding (C) 6.150%, 02/01/06 1,800 1,827 Allstate Life Global Funding II MTN (F) (J) (L) 3.080%, 06/15/06 9,044 9,045 American Express Bank (F) 3.170%, 11/21/07 3,825 3,827 American Express Centurion 4.375%, 07/30/09 145 146 American General Finance 3.875%, 10/01/09 1,445 1,406 3.090%, 06/15/06 (F) (J) (L) 17,696 17,696 American International Group 4.250%, 05/15/13 900 866 Apache Finance Canada 4.375%, 05/15/15 2,980 2,943 Arch Capital Group 7.350%, 05/01/34 4,525 5,189 Archstone-Smith Operating Trust (K) 5.625%, 08/15/14 975 1,018 Associates 6.250%, 11/01/08 895 953 Avalonbay Communities MTN 7.500%, 12/15/10 1,025 1,166 BAC Capital Trust VI 5.625%, 03/08/35 1,710 1,751 Bank One 7.875%, 08/01/10 4,440 5,134 3.700%, 01/15/08 3,850 3,818 Bank of America 7.400%, 01/15/11 3,300 3,771 5.875%, 02/15/09 1,835 1,938 4.375%, 12/01/10 (K) 810 812 3.875%, 01/15/08 (K) 845 841 Bank of Scotland Treasury Services (C) 3.500%, 11/30/07 1,680 1,658 - -------------------------------------------------------------------------------- 68 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Bankamerica Capital (F) 3.711%, 01/15/27 $ 1,400 $ 1,358 Banponce Trust I, Ser A 8.327%, 02/01/27 2,410 2,624 Barclays Bank PLC (C) 8.550%, 09/29/49 935 1,123 Bear Stearns EXL (F) (L) 3.100%, 06/15/06 34,998 34,998 Berkshire Hathaway Financial 3.400%, 07/02/07 2,935 2,899 4.125%, 01/15/10 (C) 650 644 Boeing Capital 6.500%, 02/15/12 340 378 5.800%, 01/15/13l (K) 315 340 CCN Bluegrass (F) (J) (L) 3.170%, 02/21/06 12,780 12,780 CIT Group MTN (F) (L) 3.260%, 05/12/06 49,154 49,154 3.199%, 07/29/05 2,240 2,242 3.163%, 04/19/06 4,915 4,919 Capital One Bank 6.700%, 05/15/08 1,000 1,063 4.875%, 05/15/08 4,520 4,566 Capital One Financial 8.750%, 02/01/07 1,646 1,760 5.500%, 06/01/15 730 736 Caterpillar Financial Services MTN, Ser F (F) (L) 3.250%, 07/11/05 9,831 9,831 Chase Capital II, Ser B (F) 3.710%, 02/01/27 500 466 Chase Capital III, Ser C (F) 3.460%, 03/01/27 840 789 Citicorp 7.750%, 06/15/06 (B) 2,800 2,902 7.200%, 06/15/07 740 789 Citifinancial 6.250%, 01/01/08 1,350 1,424 Citigroup 6.500%, 01/18/11 1,420 1,567 6.200%, 03/15/09 300 320 5.500%, 08/09/06 865 880 5.000%, 03/06/07 915 930 5.000%, 09/15/14 3,250 3,314 4.650%, 07/01/10 (C) 1,215 1,219 4.125%, 02/22/10 (K) 5,345 5,303 3.625%, 02/09/09 (K) 9,360 9,183 Colonial Realty MTN 6.980%, 09/26/05 5,300 5,341 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Countrywide Home Loans MTN, Ser A (F) (L) 3.120%, 03/21/06 $ 16,123 $ 16,123 Countrywide Home Loans MTN, Ser L 2.875%, 02/15/07 2,440 2,389 Countrywide Home Loans MTN, Ser M (F) (L) 3.389%, 08/26/05 5,899 5,899 3.152%, 06/23/05 11,994 11,993 3.040%, 11/30/05 22,414 22,414 2.810%, 01/31/06 4,326 4,326 Credit Suisse First Boston London (C) (F) 9.650%, 03/24/10 8,339 8,075 Credit Suisse First Boston USA 4.700%, 06/01/09 1,025 1,038 Danske Bank (C) (F) 5.914%, 12/29/49 4,000 4,298 Dekabank (F) (L) 3.206%, 05/19/06 36,374 36,368 Depfa ACS Bank 4.250%, 08/16/10 5,700 5,716 Deutsche Bank (F) 3.843%, 03/15/07 2,325 2,314 Developers Diversified Realty MTN 7.000%, 03/19/07 1,100 1,145 Dryden Investor Trust (C) (H) 7.157%, 07/23/08 2,799 2,923 Duke Capital 7.500%, 10/01/09 1,180 1,313 EOP Operating 7.000%, 07/15/11 1,780 1,987 4.650%, 10/01/10 1,849 1,840 Eksportsfinans MTN 3.375%, 01/15/08 4,950 4,880 Equity One 3.875%, 04/15/09 7,100 6,864 Equity Residential Properties Trust 6.625%, 03/15/12 1,705 1,898 Farmers Exchange Capital (C) 7.200%, 07/15/48 2,550 2,729 7.050%, 07/15/28 1,563 1,655 Farmers Insurance Exchange Capital (C) 8.625%, 05/01/24 4,518 5,585 First Industrial 7.600%, 07/15/28 3,400 3,919 First Industrial MTN 7.500%, 12/01/17 2,765 3,156 Five Finance MTN (F) (J) (L) 3.100%, 09/22/05 27,920 27,915 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 69 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Ford Motor Credit 7.875%, 06/15/10 $ 8,500 $ 8,261 7.375%, 10/28/09 1,530 1,480 7.375%, 02/01/11 (K) 4,650 4,429 7.250%, 10/25/11 3,778 3,569 7.000%, 10/01/13 (K) 490 456 6.875%, 02/01/06 4,090 4,136 6.500%, 01/25/07 1,660 1,663 5.700%, 01/15/10 (K) 1,585 1,442 4.950%, 01/15/08 1,470 1,393 Ford Motor Credit MTN 7.750%, 02/15/07 4,435 4,496 GE Capital Franchise MTN 6.860%, 06/15/07 1,100 1,164 General Electric Capital 4.125%, 03/04/08 2,970 2,969 General Electric Capital MTN, Ser A 5.875%, 02/15/12 (K) 645 696 5.450%, 01/15/13 400 423 4.875%, 03/04/15 (K) 2,375 2,417 3.600%, 10/15/08 2,775 2,723 3.450%, 07/16/07 (K) 1,030 1,018 3.450%, 01/15/08 (F) 16,125 16,005 General Motors Acceptance 8.000%, 11/01/31 2,567 2,147 7.750%, 01/19/10 (K) 2,370 2,236 7.250%, 03/02/11 4,205 3,748 6.875%, 09/15/11 2,193 1,913 6.150%, 04/05/07 1,080 1,060 6.125%, 09/15/06 1,905 1,898 6.125%, 02/01/07 (K) 2,180 2,147 6.125%, 08/28/07 (K) 9,860 9,643 6.125%, 01/22/08 415 397 5.625%, 05/15/09 (K) 4,210 3,802 5.110%, 12/01/14 (F) 2,732 2,218 4.203%, 09/23/08 (F) 575 515 4.100%, 07/16/07 (F) (K) 3,340 3,141 General Motors Acceptance MTN (F) 4.145%, 05/18/06 860 847 Genworth Financial 5.750%, 06/15/14 360 385 Goldman Sachs Capital I 6.345%, 02/15/34 705 754 Goldman Sachs Group 6.600%, 01/15/12 2,630 2,909 5.125%, 01/15/15 840 854 5.000%, 10/01/14 3,207 3,234 HBOS (C) 3.125%, 01/12/07 1,200 1,186 HBOS Treasury Services (C) 3.600%, 08/15/07 1,020 1,011 HSBC Finance 4.750%, 04/15/10 870 879 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Harrier Finance Funding MTN (F) (J) (L) 3.034%, 09/15/05 $ 5,702 $ 5,701 Harrier Finance Funding MTN, Ser 1 (F) (J) (L) 3.016%, 06/15/05 17,106 17,105 Highwoods Realty 7.500%, 04/15/18 1,550 1,724 Household Finance 8.000%, 07/15/10 2,330 2,691 7.000%, 05/15/12 1,975 2,243 6.375%, 11/27/12 365 403 5.875%, 02/01/09 3,480 3,654 Irish Life & Permanent MTN, Ser X (F) (J) (L) 3.101%, 06/22/06 18,285 18,283 Istar Financial 5.375%, 04/15/10 1,645 1,659 JP Morgan Capital Trust II 7.950%, 02/01/27 180 197 JP Morgan Chase 6.750%, 02/01/11 2,798 3,099 5.750%, 01/02/13 (K) 3,670 3,922 5.250%, 05/30/07 375 384 5.125%, 09/15/14 1,520 1,548 4.000%, 02/01/08 1,225 1,220 JP Morgan Chase Capital XV 5.875%, 03/15/35 600 608 Jackson National Life Funding (F) (J) (L) 3.064%, 05/01/06 43,256 43,256 Japan Finance 4.625%, 04/21/15 2,400 2,430 K2 MTN (F) (J) (L) 2.995%, 12/12/05 1,180 1,179 Korea Development Bank 4.250%, 11/13/07 560 560 Lakeside Funding (F) (J) (L) 3.120%, 06/08/05 9,831 9,831 Lazard (C) 7.125%, 05/15/15 1,375 1,381 Lehman Brothers 7.000%, 02/01/08 3,615 3,871 Liberty Lighthouse US Capital MTN (F) (J) (L) 3.118%, 05/10/06 19,662 19,649 Liberty Mutual Group (C) 6.500%, 03/15/35 780 771 MBNA 6.125%, 03/01/13 715 762 Massmutual Global Funding II (C) 2.550%, 07/15/08 2,570 2,453 - -------------------------------------------------------------------------------- 70 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Merrill Lynch 7.430%, 09/01/22 $ 21 $ 22 Merrill Lynch MTN, Cl C 4.250%, 02/08/10 2,995 2,979 Merrill Lynch MTN, Ser B 3.375%, 09/14/07 1,650 1,635 Merrill Lynch MTN, Ser C (F) 3.808%, 03/12/07 2,420 2,411 Met Life Global Funding (C) 4.750%, 06/20/07 800 812 4.500%, 05/05/10 475 477 4.250%, 07/30/09 750 752 Monumental Global Funding (C) 5.200%, 01/30/07 750 765 Monumental Global Funding II (C) (K) 4.375%, 07/30/09 1,575 1,575 Morgan Stanley 6.750%, 04/15/11 (K) 1,150 1,285 5.300%, 03/01/13 5,728 5,912 4.000%, 01/15/10 1,050 1,028 Morgan Stanley EXL (F) (L) 3.089%, 05/04/06 6,882 6,882 Morgan Stanley EXL, Ser S (F) (L) 3.085%, 06/02/06 9,831 9,830 NB Capital Trust IV (C) 8.250%, 04/15/27 4,655 5,119 National Capital Trust II (C) (F) 5.486%, 12/29/49 3,207 3,317 National City Bank 3.375%, 10/15/07 1,450 1,435 3.300%, 05/15/07 700 692 NationsBank Capital Trust III (F) 3.691%, 01/15/27 5,080 4,780 Nationwide Building Society 4.250%, 02/01/10 (C) 10 10 3.500%, 07/31/07 (C) 2,700 2,670 3.090%, 01/06/06 (F) (J) (L) 19,662 19,662 3.083%, 10/28/05 (F) (J) (L) 9,831 9,831 Nationwide Mutual Insurance (C) 8.250%, 12/01/31 2,000 2,593 6.600%, 04/15/34 5,263 5,471 New York Life Global Funding (C) 3.875%, 01/15/09 2,550 2,535 North Front Pass-Through Trust (C) 5.810%, 12/15/24 3,900 4,113 Northern Rock (F) (J) (L) 3.099%, 02/03/06 20,252 20,252 Odyssey Re Holdings 6.875%, 05/01/15 2,900 2,964 PNC Funding 5.250%, 11/15/15 1,250 1,288 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Pacific Life Global Funding (F) (J) (L) 3.080%, 06/13/06 $ 14,746 $ 14,746 Pemex Finance 9.690%, 08/15/09 2,125 2,390 Permanent Financing PLC, Ser 2A (F) 4.200%, 06/10/07 10,800 10,801 Platinum Underwriters Finance (C) 7.500%, 06/01/17 1,100 1,110 Power Receivables Financial 6.290%, 01/01/12 4,730 4,964 6.290%, 01/01/12 (C) (K) 507 527 Premium Asset Trust, Ser 2004-01 (F) (J) (L) 3.100%, 02/06/06 14,550 14,560 Premium Asset Trust, Ser 2004-10 (F) (J) (L) 3.100%, 04/14/06 27,526 27,526 Prime Property Funding (C) 5.600%, 06/15/11 3,380 3,522 Progress Capital Holdings MTN (C) 6.750%, 12/10/07 3,000 3,151 Protective Life MTN 3.700%, 11/24/08 1,015 1,009 RBS Capital Trust I (F) 4.709%, 12/29/49 1,090 1,067 Rabobank Capital Fund II (C) 5.260%, 12/29/49 210 215 Rabobank Capital Fund Trust III (C) (F) 5.254%, 10/21/16 440 447 Rouse 5.375%, 11/26/13 1,315 1,269 3.625%, 03/15/09 705 665 Royal Bank of Scotland Group 5.000%, 11/12/13 640 658 SLM EXL, Ser S (F) (J) (L) 3.090%, 05/15/06 21,628 21,628 SLM MTN 3.625%, 03/17/08 1,735 1,707 SLM MTN, Ser A 5.000%, 10/01/13 851 867 SLM MTN, Ser X (F) (J) (L) 3.090%, 06/20/06 39,323 39,323 SLM, Ser CPI (F) 4.130%, 04/01/09 4,050 4,007 Simon Property Group 5.625%, 08/15/14 420 435 Spieker Properties 7.650%, 12/15/10 1,910 2,211 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 71 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- SunTrust Banks 4.000%, 10/15/08 $ 1,390 $ 1,383 3.625%, 10/15/07 320 316 TIAA Global Markets (C) 5.000%, 03/01/07 1,500 1,524 3.875%, 01/22/08 1,625 1,617 Toyota Motor Credit 2.875%, 08/01/08 1,970 1,911 UBS Preferred Funding Trust I 8.622%, 10/29/49 410 487 US Bancorp MTN, Ser N 3.950%, 08/23/07 250 250 3.125%, 03/15/08 1,520 1,480 US Bank 2.870%, 02/01/07 720 709 2.400%, 03/12/07 1,425 1,391 USAA Capital MTN, Ser B (C) 4.000%, 12/10/07 1,500 1,500 Wachovia Bank 6.300%, 04/15/28 (F) 1,520 1,615 4.875%, 02/01/15 (K) 1,985 2,014 Washington Mutual 4.000%, 01/15/09 2,623 2,590 Washington Mutual Bank 5.125%, 01/15/15 895 907 Wells Fargo 7.800%, 06/15/10 450 451 5.000%, 11/15/14 2,935 3,008 4.200%, 01/15/10 (K) 6,210 6,185 Westfield Capital (C) 4.375%, 11/15/10 3,900 3,890 White Pine Finance MTN, Ser 1 (F) (J) (L) 3.071%, 11/01/05 8,651 8,650 Woodbourne Pass-Through Trust (C) (F) 4.190%, 04/08/49 2,500 2,494 World Savings Bank 4.125%, 03/10/08 1,325 1,324 XL Capital 6.375%, 11/15/24 705 758 Zions Bancorporation 6.000%, 09/15/15 1,420 1,538 Zurich Capital Trust I (C) 8.376%, 06/01/37 3,000 3,278 ---------- 1,012,572 ---------- HEALTH CARE -- 0.4% Boston Scientific 5.450%, 06/15/14 640 670 Bristol-Myers Squibb 6.875%, 08/01/97 425 517 5.750%, 10/01/11 550 587 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- HCA (K) 5.750%, 03/15/14 $ 6,320 $ 6,189 Merck 4.750%, 03/01/15 1,325 1,326 4.375%, 02/15/13 1,225 1,212 Nationwide Health Properties 6.000%, 05/20/15 610 604 Schering-Plough 6.750%, 12/01/33 650 773 Tenet Healthcare (K) 7.375%, 02/01/13 221 217 Wellpoint 6.375%, 06/15/06 1,100 1,124 5.950%, 12/15/34 955 1,020 Wyeth 5.500%, 02/01/14 610 640 ---------- 14,879 ---------- INDUSTRIALS -- 2.5% Air 2 US (C) 8.027%, 10/01/19 4,040 3,610 Albemarle 5.100%, 02/01/15 305 302 America West Airlines, Ser 99-1 7.930%, 01/02/19 5,549 6,047 American Airlines, Ser 01-2 (K) 7.858%, 10/01/11 2,000 2,071 American Airlines, Ser 99-1 (K) 7.024%, 10/15/09 2,320 2,392 Belvoir Land (C) 5.270%, 12/15/47 900 897 Boeing (K) 5.125%, 02/15/13 1,650 1,718 Burlington North Santa Fe 7.290%, 06/01/36 280 357 Canadian National Railways 7.375%, 10/15/31 1,370 1,774 6.900%, 07/15/28 625 755 6.250%, 08/01/34 250 284 Citicorp Lease (C) 7.220%, 06/15/05 3,656 3,661 Continental Airlines, Ser 00-1 8.048%, 11/01/20 927 919 Continental Airlines, Ser 00-2 7.707%, 04/02/21 1,987 1,959 7.487%, 10/02/10 1,270 1,273 Continental Airlines, Ser 02-1 6.563%, 02/15/12 1,400 1,485 Continental Airlines, Ser 971A 7.461%, 04/01/15 300 278 Continental Airlines, Ser 974A 6.900%, 01/02/18 5,515 5,513 - -------------------------------------------------------------------------------- 72 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Continental Airlines, Ser 99-2 7.256%, 03/15/20 $ 915 $ 928 Continental Airlines, Ser AMBC 6.236%, 03/15/20 2,675 2,831 Delta Air Lines (F) 3.911%, 01/25/08 3,821 3,826 Delta Air Lines, Ser 01-1, Cl A-2 (K) 7.111%, 09/18/11 480 453 Delta Air Lines, Ser 02-1, Cl G-1 6.718%, 01/02/23 4,170 4,334 Delta Air Lines, Ser 02-1, Cl G-2 6.417%, 07/02/12 3,740 3,870 Delta Air Lines, Ser 00-1, Cl A2 7.570%, 11/18/10 1,720 1,623 Eastman Kodak (K) 7.250%, 11/15/13 2,445 2,542 Enterprise Products Operations 4.950%, 06/01/10 990 993 Enterprise Products Operations, Ser B 5.600%, 10/15/14 950 971 4.000%, 10/15/07 800 787 General Electric 5.000%, 02/01/13 1,920 1,974 Lennar (C) 5.600%, 05/31/15 560 573 Lockheed Martin 8.500%, 12/01/29 2,955 4,207 Newmont Mining 5.875%, 04/01/35 735 738 Norfolk Southern 7.050%, 05/01/37 1,450 1,777 Northrop Grumman 7.750%, 02/15/31 590 781 Northwest Airlines, Ser 01-1, Cl A-1 (K) 7.041%, 04/01/22 1,764 1,700 Ohana Military LLC, Ser 04I 6.193%, 04/01/49 750 866 Raytheon 6.000%, 12/15/10 18 19 5.500%, 11/15/12 40 42 5.375%, 04/01/13 (K) 405 420 4.500%, 11/15/07 208 209 Ryland Group 5.375%, 05/15/12 980 990 Southwest Airlines 5.125%, 03/01/17 500 490 Tyco International Group 7.000%, 06/15/28 1,775 2,121 6.875%, 01/15/29 (K) 5,420 6,439 6.375%, 10/15/11 (K) 7,470 8,196 6.000%, 11/15/13 1,945 2,104 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- US Airways, Cl B (H) (I) 7.500%, 04/15/08 $ 3,348 $ -- Union Pacific 6.250%, 05/01/34 700 776 United Technologies 6.500%, 06/01/09 1,670 1,810 5.400%, 05/01/35 (K) 1,115 1,147 4.875%, 05/01/15 655 666 4.375%, 05/01/10 (K) 2,000 2,011 Waste Management 7.375%, 05/15/29 895 1,068 7.125%, 12/15/17 4,840 5,639 7.100%, 08/01/26 1,375 1,608 ---------- 106,824 ---------- INFORMATION TECHNOLOGY -- 0.1% Electronic Data Systems (K) 7.125%, 10/15/09 2,990 3,218 ---------- MATERIALS -- 0.1% Codelco (C) 4.750%, 10/15/14 900 873 International Paper 6.750%, 09/01/11 420 461 5.500%, 01/15/14 1,975 2,028 Lubrizol (K) 5.500%, 10/01/14 615 631 Weyerhaeuser 7.375%, 03/15/32 310 362 6.750%, 03/15/12 1,830 2,011 ---------- 6,366 ---------- SOVEREIGN -- 1.1% Aid-Israel 5.500%, 09/18/23 5,950 6,570 Quebec Province 5.000%, 07/17/09 175 181 Russian Federation 5.000%, 03/31/30 11,200 12,242 United Mexican States 8.375%, 01/14/11 5,370 6,264 8.125%, 12/30/19 405 495 United Mexican States MTN 6.375%, 01/16/13 890 952 United Mexican States MTN, Ser A 8.000%, 09/24/22 (K) 2,290 2,782 7.500%, 04/08/33 13,799 15,828 6.750%, 09/27/34 580 613 ---------- 45,927 ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 73 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES -- 1.7% AT&T 9.750%, 11/15/31 $ 1,080 $ 1,372 AT&T Wireless Services 8.125%, 05/01/12 1,255 1,501 7.350%, 03/01/06 2,000 2,051 America Movil 6.375%, 03/01/35 605 589 BellSouth 6.550%, 06/15/34 450 506 5.200%, 09/15/14 (K) 1,405 1,444 4.750%, 11/15/12 730 732 4.258%, 04/26/06 (C) 4,750 4,768 4.200%, 09/15/09 920 913 British Telecommunications PLC 8.875%, 12/15/30 920 1,281 8.375%, 12/15/10 1,310 1,548 Clear Channel Communications (K) 4.250%, 05/15/09 1,040 995 Deutsche Telekom International 8.750%, 06/15/30 500 679 5.250%, 07/22/13 2,135 2,204 France Telecom 8.750%, 03/01/31 (F) 625 869 8.000%, 03/01/11 1,280 1,489 7.950%, 03/01/06 (F) 1,675 1,719 General Electric Capital MTN, Ser A (K) 3.750%, 12/15/09 574 562 New England Telephone & Telegraph 7.875%, 11/15/29 1,175 1,440 New Jersey Bell Telephone 7.850%, 11/15/29 740 915 SBC Communications 6.450%, 06/15/34 (K) 1,535 1,700 5.100%, 09/15/14 (K) 1,850 1,878 4.389%, 06/01/21 4,170 4,170 4.389%, 06/01/21 (C) 4,450 4,450 4.125%, 09/15/09 410 406 Sprint Capital 8.750%, 03/15/32l (K) 2,030 2,791 8.375%, 03/15/12l (K) 1,900 2,279 7.125%, 01/30/06 2,300 2,346 6.875%, 11/15/28 335 380 6.000%, 01/15/07 2,035 2,092 4.780%, 08/17/06 9,025 9,098 Telecom Italia Capital 6.000%, 09/30/34 (C) (K) 1,375 1,395 5.250%, 11/15/13 2,770 2,805 4.950%, 09/30/14 (C) 1,645 1,624 Telefonica Europe 7.750%, 09/15/10 775 891 Verizon Global Funding 7.750%, 12/01/30 (K) 30 38 6.875%, 06/15/12 3,355 3,793 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Verizon Maryland 5.125%, 06/15/33 $ 315 $ 290 Verizon Maryland, Ser A 6.125%, 03/01/12 70 75 Verizon Pennsylvania, Ser A 5.650%, 11/15/11 45 47 Vodafone Group (K) 5.000%, 12/16/13 955 979 ---------- 71,104 ---------- UTILITIES -- 1.9% American Electric Power, Ser C 5.375%, 03/15/10 1,762 1,821 Arizona Public Services 8.000%, 12/30/15 890 987 Centerpoint Energy, Ser B 6.850%, 06/01/15 1,085 1,205 Cleveland Electric Illumination 5.650%, 12/15/13 330 346 Cogentrix Energy (C) 8.750%, 10/15/08 6,200 7,094 Conectiv MTN, Ser A 6.730%, 06/01/06 710 720 Dominion Resources 5.700%, 09/17/12 2,640 2,778 4.125%, 02/15/08 250 249 Dominion Resources, Cl A 7.195%, 09/15/14 830 966 Dominion Resources, Ser D 5.125%, 12/15/09 1,525 1,563 Duke Energy 6.250%, 01/15/12 1,565 1,706 5.625%, 11/30/12 (K) 1,405 1,487 Exelon 6.750%, 05/01/11 310 344 FPL Energy American Wind (C) 6.639%, 06/20/23 5,501 5,894 FirstEnergy, Ser A 5.500%, 11/15/06 2,050 2,087 FirstEnergy, Ser B 6.450%, 11/15/11 380 413 FirstEnergy, Ser C (K) 7.375%, 11/15/31 7,140 8,654 Hydro-Quebec, Ser JL 6.300%, 05/11/11 1,050 1,158 Oncor Electric Delivery 6.375%, 01/15/15 460 508 PSEG Power 8.625%, 04/15/31 470 649 Pacific Gas & Electric 6.050%, 03/01/34 (K) 5,345 5,876 3.820%, 04/03/06 (F) 168 168 - -------------------------------------------------------------------------------- 74 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Pinnacle West Energy (C) 3.630%, 04/01/07 $ 6,000 $ 5,999 Power Contract Financing (C) 5.200%, 02/01/06 2,539 2,560 Progress Energy 7.750%, 03/01/31 610 756 6.850%, 04/15/12 730 804 Public Service 7.875%, 10/01/12 1,030 1,241 SP Powerassets (C) 5.000%, 10/22/13 150 155 Scottish Power 4.910%, 03/15/10 1,300 1,314 Sempra Energy (F) (K) 3.754%, 05/21/08 4,185 4,185 Sonat 7.625%, 07/15/11 2,880 2,851 Southern California Edison (K) 6.000%, 01/15/34 975 1,086 TXU (C) 6.550%, 11/15/34 (K) 4,705 4,529 4.800%, 11/15/09 2,500 2,436 TXU Energy 7.000%, 03/15/13 460 508 3.920%, 01/17/06 (C) (F) 615 615 Valero Logistics 6.050%, 03/15/13 1,070 1,120 Virginia Electric & Power, Ser A 5.750%, 03/31/06 1,325 1,345 Williams 8.750%, 03/15/32 2,840 3,330 7.750%, 06/15/31 (K) 740 790 Williams, Ser A 7.500%, 01/15/31 310 325 ---------- 82,622 ---------- Total Corporate Obligations (Cost $1,473,888) ($ Thousands) 1,496,522 ---------- U.S. TREASURY OBLIGATIONS -- 28.7% U.S. Treasury Bonds 10.375%, 11/15/12 (K) 5,655 6,536 8.875%, 08/15/17 (K) 3,800 5,493 8.750%, 08/15/20 (K) 3,405 5,088 8.500%, 02/15/20 (K) 11,925 17,370 8.125%, 08/15/19 (K) 44,077 62,011 7.125%, 02/15/23 (K) 4,442 5,938 6.750%, 08/15/26 (K) 11,340 14,975 6.250%, 08/15/23 to 05/15/30 (K) 66,367 84,314 6.125%, 11/15/27 (K) 34,352 42,715 6.000%, 02/15/26 (K) 16,995 20,645 5.500%, 08/15/28 (K) 530 614 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- 5.375%, 02/15/31 (K) $ 6,780 $ 7,852 3.875%, 04/15/29 (D) 3,315 4,667 3.625%, 04/15/28 (D) (K) 29,990 40,355 3.000%, 02/15/08 (K) 32,010 31,496 2.375%, 01/15/25 (D) (K) 24,370 26,748 U.S. Treasury Notes 6.500%, 10/15/06 330 343 4.250%, 01/15/10 (D) (K) 2,607 2,958 4.250%, 08/15/13 to 11/15/14 (K) 7,473 7,619 4.125%, 05/15/15 (K) 24,402 24,638 4.000%, 06/15/09 to 02/15/15 (K) 89,355 89,687 3.875%, 05/15/10 (K) 7,707 7,749 3.750%, 03/31/07 to 05/15/08 10,611 10,640 3.625%, 04/30/07 76,990 77,026 3.625%, 01/15/10 (K) 14,110 14,042 3.500%, 05/31/07 42,333 42,254 3.500%, 08/15/09 to 02/15/10 (K) 117,460 116,295 3.375%, 01/15/07 to 01/15/12 (D) 1,970 2,072 3.375%, 02/28/07 to 10/15/09 (K) 134,060 132,832 3.125%, 01/31/07 to 10/15/08 (K) 92,420 91,735 3.000%, 12/31/06 (K) 139,337 138,134 2.500%, 10/31/06 7,790 7,680 2.000%, 07/15/14 (D) (K) 24,517 25,372 1.875%, 07/15/13 (D) (K) 4,819 4,946 1.625%, 01/15/15 (D) (K) 13,299 13,309 0.875%, 04/15/10 (D) (K) 20,524 20,127 U.S. Treasury STRIPS (A) (K) 5.970%, 11/15/21 23,570 11,351 5.830%, 02/15/23 10,290 4,655 ---------- Total U.S. Treasury Obligations (Cost $1,191,549) ($ Thousands) 1,222,281 ---------- ASSET-BACKED SECURITIES -- 25.1% AUTOMOTIVE -- 2.8% AESOP Funding, Ser 2003-4A, Cl A1 (C) (F) 3.320%, 08/20/07 12,000 12,025 Capital Auto Receivables Asset Trust, Ser 2002-2, Cl A4 4.500%, 10/15/07 5,479 5,484 Capital Auto Receivables Asset Trust, Ser 2002-3, Cl A3 3.580%, 10/16/06 5,549 5,550 Capital Auto Receivables Asset Trust, Ser 2004-1, Cl A3 2.000%, 11/15/07 1,588 1,565 Capital Auto Receivables Asset Trust, Ser 2004-2, Cl A2 3.350%, 02/15/08 781 774 Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 (F) (J) (L) 3.327%, 05/15/06 47,564 47,564 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 75 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Chase Manhattan Auto Owner Trust, Ser 2004-A, Cl A3 2.080%, 05/15/08 $ 3,790 $ 3,741 Chesapeake Funding, Ser 2003-1, Cl A1 (F) 3.340%, 08/07/08 8,109 8,112 DaimlerChrysler Auto Trust, Ser 2004-B, Cl A3 3.180%, 09/08/08 2,041 2,025 DaimlerChrysler Auto Trust, Ser 2005-B, Cl A2 3.750%, 12/08/07 1,498 1,498 Drivetime Auto Owner Trust, Ser 2005-A, Cl A1 (F) (J) (L) 3.110%, 03/15/06 4,686 4,686 Ford Credit Auto Owner Trust, Ser 2002-D, Cl A4B (F) 3.210%, 11/15/06 10,039 10,043 Ford Credit Auto Owner Trust, Ser 2005-A, Cl A2 3.080%, 07/15/07 170 170 Ford Credit Auto Owner Trust, Ser 2005-A, Cl A3 3.480%, 11/15/08 10,666 10,600 Ford Credit Auto Owner Trust, Ser 2005-B, Cl A3 4.170%, 01/15/09 1,657 1,662 Honda Auto Receivables Trust, Ser 2003-5, Cl A3 2.300%, 10/18/07 1,580 1,564 Nissan Auto Receivables Owner Trust, Ser 2005-B, Cl A2 3.750%, 09/17/07 852 852 USAA Auto Owner Trust, Ser 2004-3, Cl A3 3.160%, 02/17/09 1,145 1,133 ---------- 119,048 ---------- CREDIT CARDS -- 2.5% American Express Credit Account Master, Ser 2004-3, Cl A 4.350%, 12/15/11 1,339 1,352 Capital One Master Trust, Ser 2001-3A, Cl A 5.450%, 03/16/09 4,416 4,486 Capital One Multi-Asset Execution Trust, Ser 2005, Cl A2 4.050%, 02/15/11 1,904 1,901 Chase Credit Card Master Trust, Ser 2001-1, Cl A (F) 3.230%, 06/16/08 10,550 10,561 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Chase Issuance Trust, Ser 2004-A9, Cl A9 3.220%, 06/15/10 $ 7,925 $ 7,798 Chase Issuance Trust, Ser 2005-A4, Cl A4 4.230%, 01/15/13 1,215 1,215 Citibank Credit Card Issuance Trust, Ser 2000-A1, Cl A1 6.900%, 10/15/07 7,445 7,535 Citibank Credit Card Issuance Trust, Ser 2002-A5, Cl A5 (F) 3.050%, 09/17/07 21,915 21,915 Citibank Credit Card Issuance Trust, Ser 2003-A6, Cl A6 2.900%, 05/17/10 6,251 6,058 Citibank Credit Card Issuance Trust, Ser 2004-A1, Cl A1 2.550%, 01/20/09 9,724 9,520 Citibank Credit Card Issuance Trust, Ser 2004-A4, Cl A4 3.200%, 08/24/09 9,950 9,792 Citibank OMNI Master Trust, Ser 2002-4, Cl A (F) 3.220%, 08/18/09 8,639 8,642 Discover Card Master Trust, Ser 2004-2, Cl A1 (F) 3.110%, 05/15/10 969 968 MBNA Credit Card Master Note Trust, Ser 2003-A6, Cl A6 2.750%, 10/15/10 5,750 5,553 MBNA Credit Card Master Note Trust, Ser 2004-A4, Cl A4 2.700%, 09/15/09 7,075 6,923 MBNA Credit Card Master Note Trust, Ser 2005-A1, Cl A1 4.200%, 09/15/10 1,609 1,619 Metris Master Trust, Ser 2000-3, Cl A (F) 3.350%, 09/21/09 2,455 2,457 ---------- 108,295 ---------- MORTGAGE RELATED SECURITIES -- 19.1% ABS Home Equity Loan Trust, Ser 2001-HE3, Cl A1 (F) 3.360%, 11/15/31 1,055 1,056 AFC Home Equity Loan Trust, Ser 2000-1, Cl 2A (F) 3.330%, 03/25/30 7,003 7,013 ARSI, Ser 2004-W5, Cl AF1 (F) 3.200%, 04/25/34 506 506 - -------------------------------------------------------------------------------- 76 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Aire Valley Mortgages, Ser 2004-1A, Cl 1A (F) (J) (L) 3.090%, 09/20/05 $ 12,583 $ 12,583 Ameriquest Mortgage Securities, Ser 2004-R12, Cl A3 (F) 3.370%, 01/25/35 1,188 1,192 Amortizing Residential Collateral Trust CMO, Ser 2002-BC1, Cl A (F) 3.430%, 01/25/32 1,620 1,622 Asset Backed Funding Certificates, Ser 2005-WF1, Cl A2B (F) 3.270%, 01/25/35 1,291 1,291 Asset Securitization, Ser 1996-D2, Cl A1 6.920%, 02/14/29 6,218 6,307 Atlantic City Electric Transition Funding, Ser 2003-1 Cl A1 2.890%, 07/20/11 358 349 Banc of America Commercial Mortgage, Ser 2004-5, Cl A3 4.561%, 11/10/41 5,370 5,390 Banc of America Commercial Mortgage, Ser 2004-6, Cl A3 4.512%, 12/10/42 5,620 5,619 Banc of America Commercial Mortgage, Ser 2005-1, Cl A5 (F) 4.976%, 11/10/42 1,412 1,470 Banc of America Funding, Ser 2005-B, Cl 2A1 (F) 5.145%, 04/20/35 9,375 9,468 Bank of America Commercial Mortgage, Ser 2004-1 Cl A4 4.760%, 11/10/39 949 955 Bank of America Mortgage Securities, Ser 2003-1, Cl 2A4 5.000%, 02/25/18 6,419 6,453 Bank of America Mortgage Securities, Ser 2004-5, Cl 4A1 5.000%, 06/25/19 2,757 2,797 Bank of America Mortgage Securities, Ser 2004-6, Cl 4A1 5.000%, 07/25/19 3,026 3,057 Bayview Financial Acquisition Trust, Ser 2005-B, Cl 1A1 (F) 4.443%, 04/28/39 10,030 10,030 Bear Stearns Asset-Backed Securities, Ser 2001-A, Cl AI4 6.820%, 02/15/31 2,271 2,292 Bear Stearns Commercial Mortgage Securities, Ser 2004-WPR6, Cl A6 (K) 4.825%, 11/11/41 5,995 6,080 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Blue Heron Funding, Ser 6A, Cl A1 (F) (J) (L) 3.129%, 06/21/05 $ 3,932 $ 3,932 Blue Heron Funding, Ser 9A, Cl A1 (F) (J) (L) 3.120%, 02/22/06 19,662 19,662 CCN Independence IV (F) (J) (L) 3.160%, 10/17/05 10,814 10,814 3.160%, 01/17/06 6,882 6,882 CDC Mortgage Capital Trust, Ser 2003-HE2, Cl A (F) 3.440%, 10/25/33 2,416 2,418 CIGNA CBO, Ser 1996-1, Cl A2 (C) 6.460%, 11/15/08 6,493 6,574 CSFB, Ser 1997-C2, Cl AX, IO (F) 1.129%, 01/17/35 22,024 537 CSFB, Ser 1998-C2, Cl A2 6.300%, 11/11/30 9,210 9,796 CSFB, Ser 2001-MH29, Cl A 5.600%, 09/25/31 1,597 1,584 Carrington Mortgage Loan Trust, Ser 2005-OPT2, Cl A1B (F) 3.240%, 05/25/35 1,216 1,216 Chase Commercial Mortgage Securities, Ser 2000-1, Cl A2 7.757%, 04/15/32 2,390 2,649 Chase Commercial Mortgage Securities, Ser 2000-2, Cl A2 7.631%, 07/15/32 314 360 Chase Funding Mortgage Loan, Ser 2002-1, Cl 2A2 (F) 3.340%, 03/25/32 2,522 2,531 Cheyne High Grade, Ser 2004-1A, Cl A1 (F) (J) (L) 3.250%, 11/10/05 11,305 11,305 Citigroup Commercial Mortgage Trust, Ser 2004-C1, Cl A3 (F) 5.251%, 04/15/40 1,353 1,406 Citigroup Home Equity Loan Trust, Ser 2002-1, Cl AF4 5.970%, 03/25/29 1,233 1,246 Commercial Mortgage Pass-Through Certificate, Ser 1999-1, Cl E (F) 7.094%, 05/15/32 784 850 Commercial Mortgage Pass-Through Certificate, Ser 2000-C1, Cl A2 7.416%, 08/15/33 4,753 5,312 Commercial Mortgage Pass-Through Certificate, Ser 2005-LP5, Cl ASB 4.867%, 05/10/43 960 976 Commodore, Ser 2003-2A, Cl A1MM (F) (J) (L) 3.100%, 12/12/38 9,044 9,044 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 77 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Conseco Finance Home Loan Trust, Ser 2000-E, Cl M1 8.130%, 08/15/31 $ 5,600 $ 5,609 Conseco Finance Securitization, Ser 2000-4, Cl A5 7.970%, 05/01/32 2,800 2,311 Conseco Finance Securitization, Ser 2000-4, Cl A6 8.310%, 05/01/32 950 804 Conseco Finance, Ser 2001-A, Cl IIB1 10.300%, 03/15/32 2,800 2,962 Contimortgage Home Equity Loan Trust, Ser 1997-3, Cl A9 7.120%, 08/15/28 137 138 Contimortgage Home Equity Loan Trust, Ser 1997-5, Cl A6 6.870%, 03/15/24 592 595 Contimortgage Home Equity Loan, Ser 1997-2, Cl A9 7.090%, 04/15/28 238 240 Countrywide Alternative Loan Trust, Ser 2004-27CB, Cl A1 6.000%, 12/25/34 6,572 6,775 Countrywide Alternative Loan Trust, Ser 2004-J1, Cl 1A1 6.000%, 02/25/34 1,801 1,826 Countrywide Alternative Loan Trust, Ser 2004-J6, Cl 2A1 6.500%, 11/25/31 7,540 7,736 Countrywide Alternative Loan Trust, Ser 2005-J4, Cl 2A1B (F) 3.210%, 05/25/34 2,141 2,141 Countrywide Asset-Backed Certificates, Ser 2001-BC3, Cl A (F) 3.330%, 12/25/31 232 232 Countrywide Asset-Backed Certificates, Ser 2003-C2, Cl 2A1 (F) 3.390%, 06/25/33 4,997 5,007 Countrywide Asset-Backed Certificates, Ser 2004-13, Cl AV4 (F) 3.380%, 06/25/35 7,639 7,646 Countrywide Asset-Backed Certificates, Ser 2004-15, Cl AF1 (F) 3.290%, 04/25/22 9,623 9,624 Countrywide Asset-Backed Certificates, Ser 2004-3N, Cl NOTE (C) (F) 3.290%, 05/25/09 4,054 4,053 Countrywide Home Equity Loan Trust, Ser 2001-A, Cl A (F) 3.330%, 04/15/27 3,134 3,137 Countrywide Home Equity Loan Trust, Ser 2004-K, Cl A2 (F) 3.390%, 02/15/34 7,870 7,886 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Criimi Mae Commercial Mortgage, Ser 1998-C1, Cl A2 (C) 7.000%, 06/02/33 $ 4,200 $ 4,412 DLJ Commercial Mortgage, Ser 1999-CG1, Cl A1B 6.460%, 03/10/32 3,175 3,399 DLJ Commercial Mortgage, Ser 1999-CG2, Cl A1B 7.300%, 06/10/32 3,600 3,984 DSLA Mortgage Loan Trust, Ser 2004-AR1, Cl A2A (F) 3.500%, 09/19/44 11,035 11,046 DSLA Mortgage Loan Trust, Ser 2004-AR2, Cl A2B (F) 3.490%, 11/19/44 14,197 14,195 Delta Funding Home Equity Loan, Ser 1999-3, Cl A1A (F) 3.500%, 09/15/29 969 970 Detroit Edison Securitization, Ser 2001-1, Cl A4 6.190%, 03/01/13 824 893 Deutsche Mortgage & Asset Receiving, 1998-C1, CL A2 6.538%, 06/15/31 8,362 8,777 Duke Funding, Ser 2004-6B, Cl A1S1 (F) (J) (L) 2.680%, 04/10/06 14,746 14,746 EMC Mortgage Loan Trust, Ser 2002-AA, Cl A1 (C) (F) 3.560%, 05/25/39 2,668 2,684 EQCC Trust, Ser 2002-1, Cl 2A (F) 3.390%, 11/25/31 1,118 1,120 Equity One, Ser 2002-2, Cl AF3 5.773%, 10/25/32 3,629 3,667 Equivantage Home Equity Loan Trust, Ser 1997-2, Cl A3 (F) 7.775%, 07/25/28 769 767 First Horizon, Ser 2004-HE2, Cl A (F) 3.310%, 02/25/34 6,881 6,886 First Union National Bank, Ser 2000-C2, Cl A2 7.202%, 10/15/32 2,912 3,283 First Union-Lehman Brothers, Ser 1997-C2, Cl X, IO (F) 1.419%, 11/18/29 1,247 56 Fleet Home Equity Trust, Ser 2001-1, Cl A (F) 3.300%, 05/20/31 412 412 GE Capital Mortgage Services, Ser 1997-HE3, Cl A6 6.720%, 10/25/27 1,087 1,084 GE Capital Mortgage, Ser 2003-C2, Cl A4 5.145%, 07/10/37 477 496 - -------------------------------------------------------------------------------- 78 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- GMAC Commercial Mortgage Securities, Ser 1999-C2, Cl A2 6.945%, 09/15/33 $ 4,100 $ 4,466 GMAC Commercial Mortgage Securities, Ser 1999-C3, Cl A2 7.179%, 08/15/36 4,918 5,384 GMAC Commercial Mortgage Securities, Ser 2000-C2, Cl A2 7.455%, 08/16/33 5,180 5,842 GMAC Commercial Mortgage Securities, Ser 2002-C2, Cl A3 5.713%, 10/15/38 615 658 GMAC Commercial Mortgage Securities, Ser 2003-FL1A, Cl A (C) (F) 3.450%, 03/11/15 284 284 GMAC Commercial Mortgage Securities, Ser 2004-C1, Cl A1 3.118%, 03/10/38 968 950 GMAC Commercial Mortgage Securities, Ser 2004-C2, Cl A1 3.896%, 08/10/38 407 405 GMAC Mortgage Loan Trust, Ser 2004-HE5, Cl A1 (F) 3.230%, 09/25/34 6,601 6,601 GS Mortgage Securities, Ser 1998-GLII, Cl A2 6.562%, 04/13/31 1,220 1,292 GSAMP Trust, Ser 2003-SEA, Cl A1 (F) 3.490%, 02/25/33 5,477 5,508 Green Tree Financial, Ser 1996-5, Cl A6 7.750%, 07/15/27 1,480 1,607 Green Tree Financial, Ser 1998-6, Cl A6 6.270%, 06/01/30 921 934 Greenwich Capital Commercial Funding, Ser 2004-GG1, Cl A3 4.344%, 06/10/36 484 485 Harborview Mortgage Loan Trust, Ser 2004-8, Cl 2A4A (F) 3.490%, 11/19/34 10,706 10,724 Harborview Mortgage Loan Trust, Ser 2005-1, Cl X, IO (F) 1.243%, 03/19/35 44,451 1,542 Harwood Street Funding I, Ser 2004-1A, Cl NOTE (F) (J) (L) 3.140%, 09/20/05 27,920 27,920 Harwood Street Funding II, Ser 2005-1A, Cl NOTE (F) (J) (L) 3.141%, 06/25/06 19,662 19,662 Heller Financial Commercial Mortgage, Ser 1999-PH1, Cl C (F) 6.897%, 05/15/31 239 261 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- IMPAC CMB Trust, CMO, Ser 2002-2, Cl A1 (F) 3.370%, 08/25/32 $ 2,107 $ 2,108 IMPAC CMB Trust, Ser 2003-12, Cl A1 (F) 3.470%, 12/25/33 6,101 6,109 IMPAC CMB Trust, Ser 2005-1, Cl 1A1 (F) 3.350%, 04/25/35 1,416 1,418 Indymac Index Mortgage Loan Trust, Ser 2004-AR12, Cl AX2, IO (F) 0.810%, 12/25/34 32,774 1,188 JP Morgan Chase Commercial Mortgage, Ser 1997-C5, Cl X, IO (F) 1.442%, 09/15/29 4,710 175 JP Morgan Chase Commercial Mortgage, Ser 2001-CIBC, Cl A3 6.260%, 03/15/33 5,735 6,247 JP Morgan Chase Commercial Mortgage, Ser 2004-C3, Cl A2 4.223%, 01/15/42 12,948 12,915 JP Morgan Chase Commercial Mortgage, Ser 2004-CB9, Cl A4 (F) 5.381%, 06/12/41 2,018 2,139 JP Morgan Mortgage Trust, Ser 2004-A5, Cl 4A2 4.850%, 12/25/34 12,363 12,407 JP Morgan Mortgage Trust, Ser 2004-A5, Cl 4A4 (F) 4.902%, 12/25/34 11,500 11,516 LB Commercial Conduit Mortgage, Ser 1998-C4, Cl A1B 6.210%, 10/15/35 4,800 5,085 LB Commercial Conduit Mortgage, Ser 1999-C2, Cl A1 7.105%, 10/15/32 515 533 LB Commercial Conduit Mortgage, Ser 2000-C4, Cl A2 7.370%, 08/15/26 7,907 8,926 LB-UBS Commercial Mortgage Trust, Ser 1999-C2, Cl B 7.425%, 10/15/32 361 404 LB-UBS Commercial Mortgage Trust, Ser 2003-C5, Cl A4 4.685%, 07/15/32 1,009 1,015 LB-UBS Commercial Mortgage Trust, Ser 2003-C7, Cl A4 4.931%, 09/15/35 1,785 1,826 LB-UBS Commercial Mortgage Trust, Ser 2005-C2, Cl AAB (F) 5.007%, 04/15/30 1,200 1,235 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 79 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- MLCC Mortgage Investors, Ser 2004-B, Cl A3 (F) 4.642%, 05/25/29 $ 4,673 $ 4,922 Master Adjustable Rate Mortgages Trust, Ser 2004-1, Cl 2A1 (F) 3.494%, 01/25/34 5,829 5,814 Master Adjustable Rate Mortgages Trust, Ser 2004-13, Cl 3A7A (F) 3.787%, 11/21/34 11,650 11,378 Master Alternative Loans Trust, Ser 2004-4, Cl 1A1 5.500%, 05/25/34 4,310 4,287 Master Reperforming Loan Trust, Ser 2005-1, Cl 1A1 (C) 6.000%, 08/25/34 7,827 8,035 Mellon Residential Funding, Ser 2001-HEIL, Cl A4 6.615%, 02/25/21 3,280 3,314 Merrill Lynch Mortgage Investors, Ser 1996-C2, Cl A3 6.960%, 11/21/28 3,027 3,111 Merrill Lynch Mortgage Investors, Ser 1998-C1, Cl A1 6.310%, 11/15/26 433 438 Merrill Lynch Mortgage Investors, Ser 2003-WMC1, Cl A2 (F) 3.450%, 11/25/33 40 40 Merrill Lynch Mortgage Investors, Ser 2004-A1, Cl 4A 5.365%, 02/25/34 12,073 12,172 Merrill Lynch Mortgage Trust, Ser 2003-KEY1, Cl A3 4.893%, 11/12/35 480 490 Merrill Lynch Mortgage Trust, Ser 2005-GGP1, Cl A 4.099%, 11/15/10 2,225 2,228 Metropolitan Asset Funding, Ser 1997-B, Cl A1D (C) 7.130%, 03/20/12 806 805 Mid-State Trust, Ser 11, Cl A1 4.864%, 07/15/38 4,284 4,222 Money Store SBA Loan Trust, Ser 1999-1, Cl A (F) 2.932%, 07/15/25 378 375 Morgan Stanley Capital I, Ser 2004-HQ4, Cl A2 3.920%, 04/14/40 1,380 1,370 Morgan Stanley Dean Witter Capital, Ser 2000-LIFE, Cl A2 7.570%, 11/15/36 3,500 3,928 Morgan Stanley, Ser 2003-NC8, Cl A2 (F) 3.450%, 09/25/33 3,986 4,004 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Nationslink Funding, Ser 1999-1, Cl 2 6.316%, 01/20/31 $ 6,553 $ 6,923 Nomura Asset Securities, Ser 1996-MD5, Cl A1B 7.120%, 04/13/39 3,000 3,076 Novastar Home Equity Loan, Ser 1998-2, Cl A2 (F) 3.420%, 08/25/28 496 496 Novastar Home Equity Loan, Ser 2005-2, Cl A2B (F) 3.240%, 06/27/35 1,218 1,218 Oakwood Mortgage Investors, Ser 2002-C, Cl A, IO (H) 6.000%, 08/15/10 9,031 1,662 Oncor Electric Delivery Transition Bond, Ser 2003-1, Cl A2 4.030%, 02/15/12 3,130 3,120 Option One Mortgage Loan Trust, Ser 2001-4, Cl A (F) 3.390%, 01/25/32 1,587 1,587 Orchid Structured Finance, Ser 2003-1A, Cl A1MM (F) (J) (L) 3.370%, 11/18/05 19,217 19,217 Origen Manufactured Housing, Ser 2002-A, Cl A1 (F) 3.330%, 05/15/32 120 120 PNC Mortgage Acceptance, Ser 2000-C2, Cl A2 7.300%, 10/12/33 2,016 2,258 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 (F) (J) (L) 3.140%, 11/25/05 31,620 31,620 RMAC, Ser 2004-NS2A, Cl A1 (F) (J) (L) 3.080%, 06/13/05 3,503 3,503 RMAC, Ser 2004-NS3A, Cl A1 (F) (J) (L) 3.090%, 06/12/05 8,261 8,261 Renaissance Home Equity Loan Trust, Ser 2004-3, Cl AF-2 3.574%, 11/25/34 7,000 6,925 Residential Asset Mortgage Products, Ser 2003-RS3, Cl AII (F) 3.450%, 04/25/33 781 784 Residential Asset Mortgage Products, Ser 2003-RZ4, Cl A1 (F) 3.240%, 06/25/24 361 361 Residential Asset Mortgage Products, Ser 2004-SL1, Cl A8 6.500%, 11/25/31 4,718 4,870 Residential Asset Mortgage Products, Ser 2004-SL3, Cl A2 6.500%, 12/25/31 7,066 7,267 - -------------------------------------------------------------------------------- 80 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Residential Asset Securities, Ser 2002-KS7, Cl A2 (F) 3.460%, 11/25/32 $ 4,777 $ 4,792 Residential Asset Securitization Trust, Ser 2004-IP2, Cl 2A1 (F) 5.257%, 12/25/34 9,207 9,316 Residential Funding Mortgage Securities, Ser 2000-HI1, Cl AI7 8.290%, 02/25/25 5,669 5,741 SASC, Ser 2003-AL2, Cl A (C) 3.357%, 01/25/31 3,595 3,410 Salomon Brothers Mortgage Securities VII, Ser 2002-KEY2, Cl A3 4.865%, 03/18/36 597 607 Salomon Brothers Mortgage Securities, Ser 2000-C3, Cl A2 6.592%, 12/18/33 4,190 4,578 Saturn Ventures II (F) (J) (L) 3.150%, 08/08/05 21,825 21,825 Start, Ser 2003-1, Cl X 1.620%, 01/21/10 5,961 5,943 Start, Ser 2003-2, Cl X (F) 2.480%, 01/21/09 6,950 6,909 Structured Asset Investment Loan Trust, Ser 2005-1, Cl A4 (C) (F) 3.320%, 02/25/35 2,247 2,250 TIAA Real Estate, Ser 2003 1A, Cl A1 (F) (J) (L) 3.131%, 03/28/06 12,696 12,696 Terwin Mortgage Trust, Ser 2004-9HE, Cl A2 (C) (F) 3.250%, 09/25/34 5,926 5,925 Wachovia Bank Commercial Mortgage Trust, Ser 2003-C6, Cl A4 5.125%, 08/15/35 1,728 1,784 Wachovia Bank Commercial Mortgage Trust, Ser 2004-C12, Cl A2 5.001%, 07/15/41 1,890 1,942 Wachovia Bank Commercial Mortgage Trust, Ser 2005-C16, Cl APB 4.692%, 10/15/41 1,658 1,674 Wachovia Bank Commercial Mortgage Trust, Ser 2005-C17, Cl A4 5.083%, 03/15/42 2,788 2,881 Wachovia Bank Commercial Mortgage Trust, Ser 2005-C18, Cl APB 4.807%, 04/15/42 1,226 1,246 Washington Mutual Mortgage, Ser 2003-MS1, Cl 1A 5.000%, 02/25/18 2,248 2,256 Washington Mutual Mortgage, Ser 2003-MS2, Cl 3A1 5.000%, 03/25/18 7,515 7,548 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Washington Mutual, Ser 2002-AR18, Cl A (F) 4.140%, 01/25/33 $ 4,261 $ 4,263 Washington Mutual, Ser 2004-AR10, Cl A2A (F) 3.313%, 07/25/44 9,431 9,413 Wells Fargo, Ser 2003-3, Cl 1A21 5.250%, 04/25/33 2,705 2,717 Wells Fargo, Ser 2004-H, Cl A-1 (F) 4.532%, 06/25/34 8,132 8,077 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB (F) (J) (L) 3.040%, 06/15/05 4,915 4,915 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC (F) (J) (L) 3.030%, 09/15/05 3,539 3,539 ---------- 816,442 ---------- OTHER ASSET-BACKED SECURITIES -- 0.7% Embarcadero Aircraft, Ser 2000-A, Cl A1 (C) (F) 3.570%, 08/15/25 4,800 2,824 MSDWCC Heloc Trust, Ser 2005-1, Cl A (F) 3.280%, 07/25/17 2,157 2,157 Massachusetts RRB Special Purpose Trust, Ser 2005-1, Cl A2 3.780%, 09/15/10 1,340 1,334 Peco Energy Transition Trust, Ser 1999-A, Cl A6 6.050%, 03/01/09 1,034 1,059 SLM Student Loan Trust, Ser 2003-4, Cl A2 (F) 3.050%, 12/17/12 7,182 7,182 SLM Student Loan Trust, Ser 2003-4, Cl A5B (C) 3.390%, 03/15/33 1,175 1,140 SLM Student Loan Trust, Ser 2004-1, Cl A2 (F) 3.301%, 07/25/18 1,529 1,535 SLM Student Loan Trust, Ser 2004-9, Cl A1 (F) 3.151%, 10/26/09 5,394 5,392 Stingray Pass-Through Trust (C) 5.902%, 01/12/15 4,300 4,367 Structured Asset Investment Loan Trust, Ser 2005-5, Cl A2 (F) 3.180%, 06/25/35 1,216 1,216 ---------- 28,206 ---------- Total Asset-Backed Securities (Cost $1,077,484) ($ Thousands) 1,071,991 ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 81 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- U.S. GOVERNMENT MORTGAGE-BACKED OBLIGATIONS -- 21.5% FHLMC 9.750%, 10/01/14 $ 22 $ 22 8.500%, 09/01/08 to 04/01/09 158 164 7.500%, 11/01/17 to 06/01/32 1,897 2,035 7.000%, 11/01/15 to 06/01/32 2,288 2,417 6.500%, 10/01/16 to 05/01/18 6,494 6,768 6.000%, 03/01/11 to 06/13/35 12,349 12,799 5.500%, 09/01/13 to 04/01/34 56,261 57,591 5.000%, 06/01/11 to 06/13/35 36,322 36,621 4.500%, 04/01/19 to 05/01/20 15,292 15,237 4.000%, 05/01/19 to 10/01/33 2,651 2,511 FHLMC TBA 5.500%, 06/16/20 to 06/01/25 6,116 6,267 5.000%, 06/15/18 35,900 36,304 FNMA 8.000%, 04/01/08 to 07/01/31 1,596 1,709 7.500%, 06/01/27 to 04/01/31 26 28 7.000%, 03/01/09 to 07/01/32 9,155 9,643 6.500%, 12/01/12 to 04/01/34 16,614 17,297 6.000%, 11/01/12 to 09/01/34 17,970 18,513 5.500%, 05/01/13 to 08/01/34 92,196 93,755 5.000%, 08/01/11 to 03/01/34 40,643 40,886 4.890%, 04/01/12 3,218 3,296 4.518%, 04/01/09 1,941 1,964 4.500%, 11/25/14 to 09/01/33 16,816 16,775 4.000%, 08/01/10 to 10/01/18 2,364 2,335 3.500%, 10/25/31 5,815 5,543 FNMA TBA 6.500%, 06/01/32 to 07/14/35 86,852 90,208 6.000%, 06/16/20 to 06/13/35 49,200 50,541 5.500%, 06/01/18 to 06/13/35 59,996 61,024 5.000%, 07/01/18 to 06/25/35 57,284 57,386 4.000%, 06/16/20 600 586 GNMA 9.500%, 12/15/20 33 37 7.000%, 04/15/26 to 09/15/34 15,545 16,481 6.500%, 06/15/11 to 11/15/31 1,794 1,885 6.000%, 03/15/14 to 02/15/35 120,185 124,292 5.500%, 04/15/14 to 12/15/32 2,057 2,125 5.000%, 05/15/33 to 02/15/35 35,836 36,147 GNMA TBA 6.500%, 06/19/33 28,800 30,159 6.000%, 06/01/33 to 06/20/35 32,000 33,040 5.500%, 06/20/35 4,600 4,696 5.000%, 06/01/33 20,000 20,138 ---------- Total U.S. Government Mortgage-Backed Obligations (Cost $915,393) ($ Thousands) 919,225 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- U.S. GOVERNMENT AGENCY OBLIGATIONS -- 10.9% FHLB 3.625%, 11/14/08 $ 100 $ 99 2.967%, 06/17/05 (E) (K) 13,150 13,134 2.967%, 06/22/05 (E) 10,480 10,467 2.950%, 06/01/05 (E) 15,400 15,400 FHLMC 6.625%, 09/15/09 (K) 18,219 20,109 5.000%, 07/15/14 (K) 6,609 6,957 4.625%, 05/28/13 (K) 2,450 2,419 4.500%, 12/16/10 (K) 5,075 5,068 3.567%, 02/01/37 (F) 6,844 6,828 3.034%, 07/26/05 (E) 3,000 2,986 2.970%, 06/29/05 (E) (K) 4,765 4,754 FHLMC CMO, Ser 1, Cl Z 9.300%, 04/15/19 64 63 FHLMC CMO, Ser 1081, Cl K 7.000%, 05/15/21 1,156 1,158 FHLMC CMO, Ser 1101, Cl M 6.950%, 07/15/21 670 671 FHLMC CMO, Ser 1611, Cl Z 6.500%, 11/15/23 8,753 9,294 FHLMC CMO, Ser 1983, Cl Z 6.500%, 12/15/23 1,661 1,723 FHLMC CMO, Ser 2043, Cl CJ 6.500%, 04/15/28 4,933 5,158 FHLMC CMO, Ser 2389, Cl CD 6.000%, 03/15/16 6,277 6,420 FHLMC CMO, Ser 2480, Cl QJ 6.000%, 02/15/30 639 640 FHLMC CMO, Ser 2542, Cl ES 5.000%, 12/15/17 3,680 3,763 FHLMC CMO, Ser 2544, Cl IW, IO 5.500%, 03/15/26 4,400 308 FHLMC CMO, Ser 2579, Cl PI, IO 5.500%, 03/15/27 3,162 234 FHLMC CMO, Ser 2588, Cl IG, IO 5.500%, 03/15/32 7,425 947 FHLMC CMO, Ser 2621, Cl LJ, IO 5.500%, 12/15/26 2,975 320 FHLMC CMO, Ser 2625, Cl Z, IO 5.000%, 12/15/31 3,152 400 FHLMC CMO, Ser 2631, Cl IJ, IO 5.000%, 10/15/26 2,150 341 FHLMC CMO, Ser 2645, Cl MK 3.500%, 07/15/22 1,946 1,918 FHLMC CMO, Ser 2682, Cl WK 3.000%, 01/15/21 2,089 2,060 FHLMC CMO, Ser 2692, Cl YB 3.500%, 05/15/16 3,016 2,988 FHLMC CMO, Ser 2731, Cl PK 3.500%, 05/15/26 3,655 3,600 - -------------------------------------------------------------------------------- 82 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- FHLMC CMO, Ser 2733, Cl ME 5.000%, 01/15/34 $ 6,302 $ 6,291 FHLMC CMO, Ser 2736, Cl DB 3.300%, 11/15/26 3,986 3,893 FHLMC CMO, Ser 2808, Cl PG 5.500%, 04/15/33 4,729 4,836 FHLMC CMO, Ser 2809, Cl HX, IO 6.000%, 10/15/24 5,150 440 FHLMC CMO, Ser 2825, Cl PM 5.500%, 03/15/30 10,671 10,885 FHLMC CMO, Ser 2825, Cl QM 5.500%, 03/15/30 2,544 2,599 FHLMC CMO, Ser 2833, Cl JD 5.500%, 09/15/29 113 116 FHLMC CMO, Ser 2841, Cl YA 5.500%, 07/15/27 9,057 9,251 FHLMC CMO, Ser 2845, Cl PI, IO 5.500%, 02/15/32 6,488 692 FHLMC CMO, Ser 2864, Cl NA 5.500%, 01/15/31 5,400 5,565 FHLMC CMO, Ser 2957, Cl KJ 4.500%, 10/15/24 8,261 8,284 FHLMC CMO, Ser 2958, Cl MD 5.500%, 01/15/31 2,842 2,930 FHLMC CMO, Ser 2960, Cl EH 4.500%, 05/15/24 1,963 1,969 FHLMC CMO, Ser 2961, Cl PW 5.500%, 10/15/30 1,082 1,137 FHLMC CMO, Ser 2962, Cl CJ 5.500%, 11/15/23 11,490 11,741 FHLMC CMO, Ser 2963, Cl Wl 4.500%, 07/15/25 3,754 3,765 FHLMC CMO, Ser 2966, Cl XC 5.500%, 01/15/31 1,523 1,586 FHLMC CMO, Ser 2968, Cl PD 5.500%, 01/15/31 1,772 1,879 FHLMC CMO, Ser 2971, Cl KR 5.500%, 05/15/34 2,880 2,957 FHLMC CMO, Ser 2971, Cl PE 4.500%, 05/15/34 9,219 9,294 FHLMC CMO, Ser 2972, Cl UD 5.500%, 05/15/34 1,792 1,830 FHLMC CMO, Ser 2972, Cl UG 5.500%, 05/15/34 4,305 4,377 FHLMC CMO, Ser 2972, Cl WK 4.500%, 04/15/29 3,862 3,867 FHLMC CMO, Ser 2973, Cl EB 5.500%, 04/15/35 4,975 5,159 FHLMC CMO, Ser 2975, Cl OA 5.500%, 06/15/26 12,384 12,667 FHLMC CMO, Ser 2975, Cl OE 5.500%, 10/15/31 7,421 7,564 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- FHLMC CMO, Ser 2975, Cl PB 5.500%, 02/15/24 $ 4,709 $ 4,810 FHLMC CMO, Ser 2975, Cl PJ 5.500%, 05/01/35 2,371 2,427 FHLMC CMO, Ser 2982, Cl LC 4.500%, 01/15/25 5,448 5,463 FHLMC, Ser 2544, Cl Ml 5.000%, 04/15/12 1,458 1,475 FHLMC, Ser 2631, Cl MT 3.500%, 01/15/22 2,392 2,362 FHLMC, Ser 2825, Cl QN 5.500%, 09/15/32 8,628 8,813 FNMA 7.125%, 06/15/10 (K) 5,300 6,029 6.625%, 09/15/09 (K) 7,255 7,990 6.125%, 03/15/12 (K) 5,220 5,814 6.000%, 05/15/11 (K) 4,760 5,219 5.500%, 03/15/11 (K) 4,650 4,971 5.125%, 05/27/15 3,950 3,995 3.250%, 01/15/08 (K) 8,397 8,283 3.125%, 03/16/09 (K) 3,090 2,991 3.100%, 04/04/07 (K) 9,703 9,581 3.000%, 03/02/07 (K) 11,125 10,975 2.920%, 08/15/07 (E) 3,100 3,098 2.875%, 04/26/07 1,928 1,895 2.783%, 06/29/05 (B) (E) 1,840 1,836 2.750%, 03/15/07 (F) 4,645 4,571 2.710%, 01/30/07 16,675 16,389 2.350%, 04/29/06 1,625 1,606 2.350%, 04/05/07 (A) (K) 8,070 7,861 2.200%, 12/04/06 (K) 12,026 11,755 1.750%, 06/16/06 960 941 FNMA CMO, Ser 1999-11, Cl Z 5.500%, 03/25/29 6,059 6,102 FNMA CMO, Ser 2001-60, Cl JZ 6.000%, 03/25/31 892 903 FNMA CMO, Ser 2002-22, Cl PE 6.500%, 11/25/30 877 882 FNMA CMO, Ser 2002-94, Cl BJ, IO 5.500%, 04/25/16 1,121 103 FNMA CMO, Ser 2003-113, Cl PN 3.500%, 02/25/13 2,656 2,635 FNMA CMO, Ser 2003-35, Cl BC 5.000%, 05/25/18 1,750 1,785 FNMA CMO, Ser 2003-76, Cl DE 4.000%, 09/25/31 8,148 7,931 FNMA CMO, Ser 2003-87, Cl TJ 4.500%, 09/25/18 2,475 2,443 FNMA CMO, Ser 2003-92, Cl KQ 3.500%, 06/25/23 4,485 4,411 FNMA CMO, Ser 2004-88, Cl HA 6.500%, 07/25/34 3,363 3,536 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 83 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- FNMA CMO, Ser 2004-99, Cl AO 5.500%, 01/25/34 $ 5,325 $ 5,468 FNMA CMO, Ser 2005-3, Cl AP 5.500%, 02/25/35 4,420 4,570 FNMA CMO, Ser 2005-92, Cl NM 3.500%, 04/25/13 1,993 1,966 FNMA CMO, Ser 342, Cl 2, IO 6.000%, 09/01/33 4,326 753 GNMA (F) 3.750%, 05/20/34 8,275 8,161 GNMA CMO, Ser 2001-18, Cl WH (F) 18.246%, 04/20/31 537 634 GNMA CMO, Ser 2002-51, Cl SG (F) 19.110%, 04/20/31 485 601 GNMA CMO, Ser 2003-58, Cl LG, IO 5.500%, 05/17/29 3,000 550 GNMA CMO, Ser 2003-66, Cl WU 3.750%, 03/20/26 2,025 2,003 GNMA CMO, Ser 2003-82, Cl IO, IO 5.500%, 03/20/29 8,897 808 GNMA CMO, Ser 2004-80, Cl IP, IO 5.500%, 07/20/34 10,512 1,183 GNMA CMO, Ser 2004-87, Cl LI, IO 5.000%, 12/20/28 10,699 1,078 SBA CMO, Ser 2003-P10A, Cl 1 4.524%, 02/10/13 4,315 4,333 TVA (K) 7.125%, 05/01/30 3,440 4,634 ---------- Total U.S. Government Agency Obligations (Cost $462,566) ($ Thousands) 464,424 ---------- COMMERCIAL PAPER -- 4.4% FINANCIALS -- 4.3% Ajax Bambino Funding (A) (L) 3.119%, 07/06/05 19,662 19,602 Altimira Funding (A) (L) 3.004%, 06/16/05 2,561 2,558 Beethoven Funding (L) 3.109%, 07/05/05 9,831 9,802 3.013%, 06/13/05 9,883 9,873 Brahms Funding (A) (L) 3.000%, 06/02/05 25,356 25,354 Capital One Multi-Asset Funding (A) (L) 3.025%, 06/20/05 7,865 7,852 3.002%, 06/07/05 6,882 6,878 Cobbler Funding (A) (L) 3.057%, 06/28/05 3,598 3,590 Cre-8 Funding (A) (L) 3.106%, 06/23/05 6,882 6,869 Danske (A) 3.040%, 06/01/05 7,728 7,728 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- General Electric Capital (A) 3.020%, 06/24/05 $ 14,950 $ 14,921 Golden Fish (A) (L) 3.066%, 06/22/05 10,233 10,215 3.065%, 06/20/05 6,385 6,375 3.055%, 06/21/05 2,949 2,944 3.053%, 06/14/05 7,907 7,898 IBM 3.923%, 06/27/01 8,465 8,464 National Rural Utilities (A) 3.038%, 06/16/05 12,550 12,534 Rams Funding (A) (L) 3.121%, 06/06/05 9,831 9,827 UBS Finance Delaware (A) 3.040%, 06/01/05 11,040 11,040 ---------- 184,324 ---------- INDUSTRIALS -- 0.1% Alcoa (A) 3.048%, 06/21/05 4,805 4,797 ---------- Total Commercial Paper (Cost $189,094) ($ Thousands) 189,121 ---------- MASTER NOTES (L) -- 1.7% Bank of America Master Notes 3.143%, 06/01/05 49,154 49,154 Bear Stearns Master Notes 3.234%, 06/01/05 23,594 23,594 ---------- Total Master Notes (Cost $72,748) ($ Thousands) 72,748 ---------- CERTIFICATES OF DEPOSIT -- 1.1% State Street Bank & Trust (F) 2.920%, 12/11/06 2,325 2,325 SunTrust Bank 4.415%, 06/15/09 1,285 1,292 3.040%, 06/02/09 (F) 1,350 1,351 U.S. Trust (F) (L) 3.215%, 09/14/05 19,662 19,662 Washington Mutual Bank (F) (L) 3.270%, 08/18/05 23,201 23,201 ---------- Total Certificates of Deposit (Cost $47,824) ($ Thousands) 47,831 ---------- FOREIGN BONDS -- 0.3% Bundesrepub Deutschland 4.750%, 07/04/34 1,375 1,974 4.000%, 01/04/37 5,450 6,968 Petro-Canada 5.950%, 05/15/35 1,650 1,683 ---------- Total Foreign Bonds (Cost $10,617) ($ Thousands) 10,625 ---------- - -------------------------------------------------------------------------------- 84 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands)/Contracts ($ Thousands) - -------------------------------------------------------------------------------- CASH EQUIVALENTS -- 0.1% Evergreen Select Money Market Fund 528,714 $ 529 SEI Daily Income Trust, Prime Obligation Fund, Cl A+ 41,770 42 ---------- Total Cash Equivalents (Cost $571) ($ Thousands) 571 ---------- MUNICIPAL BOND -- 0.0% Fort Irwin, California, GO (C) 5.300%, 12/15/35 $ 1,395 1,395 Los Angeles County, California Taxable Pension Obligation, Ser D, RB, MBIA (E) 8.029%, 06/30/10 650 518 ---------- Total Municipal Bond (Cost $1,830) ($ Thousands) 1,913 ---------- PURCHASED OPTIONS -- 0.0% 90 Days Euro Futures Call, Expires 9/19/05, Strike Price $96 152 104 September 2005 Ten Year Treasury Note Futures Call Expires 08/26/05, Strike Price $115 330 155 ---------- Total Purchased Options (Cost $443) ($ Thousands) 259 ---------- REPURCHASE AGREEMENTS -- 12.4% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $30,943,896 (collateralized by U.S. Government Obligation, par value $32,204,353, 0.000%, 12/28/05; with total market value $31,560,266) (L) 30,941 30,941 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $24,579,248 (collateralized by various U.S. Government Obligations, ranging in par value $297,875- $14,843,432, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $25,069,610)(L) 24,577 24,577 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands)/Contracts ($ Thousands) - -------------------------------------------------------------------------------- Nomura 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $337,628,508 (collateralized by various U.S. Government Obligations, ranging in par value $15,000,000- $50,000,000, 0.000%-7.000%, 06/07/05-05/15/11; with total market value $344,352,000) $337,600 $ 337,600 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $137,643,825 (collateralized by various U.S. Government Obligations, ranging in par value $5,744,177- $36,965,050, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $140,385,283)(L) 137,632 137,632 ---------- Total Repurchase Agreements (Cost $530,750) ($ Thousands) 530,750 ---------- Total Investments -- 141.3% (Cost $5,974,757) ($ Thousands) $6,028,261 ---------- WRITTEN OPTIONS -- 0.0% September 2005 90 Day Euro Call, Expires 09/19/05, Strike Price $96.25 (176) (47) September 2005 90 Day Euro Put, Expires 09/19/05, Strike Price $96.25 (176) (41) September 2005 Ten Year Treasury Note Call, Expires 08/26/05, Strike Price $110 (130) (451) September 2005 Ten Year Treasury Note Call, Expires 08/26/05, Strike Price $112 (176) (333) September 2005 Ten Year Treasury Note Call, Expires 08/26/05, Strike Price $113 (125) (158) September 2005 Ten Year Treasury Note Put, Expires 08/26/05, Strike Price $105 (43) (1) September 2005 Ten Year Treasury Note Put, Expires 08/26/05, Strike Price $110 (126) (27) September 2005 Ten Year Treasury Note Put, Expires 08/26/05, Strike Price $106 (192) (3) ---------- Total Written Options (Premium Received $(627)) ($ Thousands) $ (1,061) ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 85 <page> - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Core Fixed Income Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Description - -------------------------------------------------------------------------------- A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see Note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- UNREALIZED CONTRACT APPRECIATION TYPE OF NUMBER OF VALUE EXPIRATION (DEPRECIATION) CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- Euro-BOBL (244) $ 27,989 06/08/05 $ (721) 90 Day Euro$ 1,225 294,812 09/21/05 (759) 90 Day Euro$ 60 14,408 03/15/06 77 U.S. 10 Year Agency Note (32) (3,611) 06/23/05 (36) U.S. 10 Year Agency Note 188 21,294 09/23/05 72 U.S. 5 Year Note (96) (10,472) 06/23/05 40 U.S. 5 Year Note (259) (28,170) 09/23/05 (54) U.S. Long Treasury Bond 18 2,114 06/23/05 111 U.S. Long Treasury Bond (588) (69,053) 09/23/05 (524) ------- $(1,794) Forward Foreign Currency Contracts -- The following forward foreign currency contracts were outstanding at May 31, 2005 (See Note 2 in Notes to Financial Statements): - -------------------------------------------------------------------------------- Currency to Currency to Unrealized Maturity Deliver Receive Contract Value Appreciation Date (Thousands) ($ Thousands) ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- 07/26/05 EUR 6,923 USD $9,085 $8,562 $523 At May 31, 2005 there was the following Credit Default Swap agreements outstanding (See Note 2 in Notes to Financial Statements). - -------------------------------------------------------------------------------- Notional Net Unrealized Expiration Amount Depreciation Description Date ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Receive fixed rate of 1.900% and pay floating par in event of default on GSAMP Trust, Ser 2005-HE1, Cl B2, 5.014%, 02/02/13 (Counter Party: Citibank) 02/02/13 600 (15) Receive fixed rate of 1.900% and pay floating par in event of default on ACE Securities Corp., Ser 2004-RM2, Cl B1, 5.014%, 01/25/35 (Counter Party: Citibank) 01/25/35 600 (15) Receive fixed rate of 3.350% and pay floating par in event of default on Aegis Asset Backed Securities Trust, Ser 2004-5, Cl B3, 6.814%, 12/25/34 (Counter Party: Citibank) 12/25/34 600 (30) Receive fixed rate of 2.050% and pay floating par in event of default on Ameriquest Mortgage Securities Inc., Ser 2004-R6, Cl M3, 5.464%, 07/25/34 (Counter Party: Citibank) 07/25/34 600 (12) Receive fixed rate of 1.950% and pay floating par in event of default on CDC Mortgage Capital Trust, Ser 2004-HE3, Cl B2, 5.264%, 11/25/34 (Counter Party: Citibank) 11/25/34 600 (12) Receive fixed rate of 1.900% and pay floating par in event of default on Countrywide Asset- Backed Certificates, Ser 2004-12, Cl MV8, 5.114%, 11/25/34 (Counter Party: Citibank) 11/25/34 600 (15) Receive fixed rate of 2.050% and pay floating par in event of default on Countrywide Asset- Backed Certificates, Ser 2004-6, Cl M8, 5.514%, 05/25/34 (Counter Party: Citibank) 05/25/34 600 (18) Receive fixed rate of 2.000% and pay floating par in event of default on Countrywide Asset- Backed Certificates, Ser 2004-ECC2, Cl M8, 5.464%, 06/25/34 (Counter Party: Citibank) 06/25/34 1,000 (25) Receive fixed rate of 3.000% and pay floating par in event of default on Countrywide Asset- Backed Certificates, Ser 2004-ECC1, Cl B, 4.814%, 01/25/34 (Counter Party: Citibank) 01/25/34 1,000 (35) Receive fixed rate of 3.050% and pay floating par in event of default on Home Equity Asset Trust, Ser 2004-8, Cl B3, 6.414%, 03/25/35 (Counter Party: Citibank) 03/25/35 600 (25) - -------------------------------------------------------------------------------- Notional Net Unrealized Expiration Amount Depreciation Description Date ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Receive fixed rate of 2.030% and pay floating par in event of default on Long Beach Mortgage Loan Trust, Ser 2004-2, Cl M6, 5.564%, 06/25/34 (Counter Party: Citibank) 06/25/34 600 (13) Receive fixed rate of 2.100% and pay floating par in event of default on Masters Asset Backed Securities Trust, Ser 2004-WMC2, Cl M5, 5.714%, 04/25/34 (Counter Party: Citibank) 04/25/34 600 (10) Receive fixed rate of 2.050% and pay floating par in event of default on Morgan Stanley ABS Equity I, Ser 2004-HE6, Cl B2, 5.264%, 08/25/34 (Counter Party: Citibank) 08/25/34 600 (17) Receive fixed rate of 2.070% and pay floating par in event of default on Morgan Stanley ABS Equity I, Ser 2004-NC5, Cl B2, 5.564%, 05/25/34 (Counter Party: Citibank) 05/25/34 600 (12) Receive fixed rate of 2.900% and pay floating par in event of default on New Century Home Equity Loan Trust, Ser 2004-4, Cl M9, 6.014%, 02/25/35 (Counter Party: Citibank) 02/25/35 1,000 (39) Receive fixed rate of 1.900% and pay floating par in event of default on Residential Asset Securities Corporation, Ser 2004-KS10, Cl M5, 5.164%, 11/25/34 (Counter Party: Citibank) 11/25/34 600 (13) - -------------------------------------------------------------------------------- $(306) - -------------------------------------------------------------------------------- Percentages are based on Net Assets of $4,265,249,459. + See Note 3 in Notes to Financial Statements. (A) The rate reflected is th 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) Security sold within the terms of a private placement memorandum, exempt from registration under section 144A of the Securities Act of 1933, as amended, and may be sold only to dealers in that program or other "accredited investors." These securities have been determined to be liquid under guidelines established by the Board of Directors. (D) Treasury Inflation Index Notes. (E) Zero Coupon Bond -- The rate reported on the Schedule of Investments is the effective yield at time of purchase. (F) Variable Rate Security -- The rate reported on the Schedule of Investments is the rate in effect as of May 31, 2005. (G) Step Bonds -- The rate reflected on the Schedule of Investments is the effective yield on May 31, 2005. The coupon on a step bond changes on a specified date. (H) Securities considered illiquid. The total value of such securities as of May 31, 2005 was $4,585 ($ Thousands) and represents 0.1% of Net Assets. (I) Security in default on interest payments. (J) 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." (K) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9). The total value of securities on loan at May 31, 2005 was $1,265,666 ($ Thousands). (L) This security was purchased with cash collateral held from securities lending. The total value of such securities as of May 31, 2005 was $1,308,199 ($ Thousands). (See Note 9). Cl -- Class CMO -- Collateralized Mortgage Obligation EUR -- Euro EXL -- Extendable Maturity FHLB -- Federal Home Loan Bank FHLMC -- Federal Home Loan Mortgage Corporation FNMA -- Federal National Mortgage Association GNMA -- Government National Mortgage Association GO -- General Obligation IO -- Interest Only Security LLC -- Limited Liability Company MBIA -- Municipal Bond Insurance Association MTN -- Medium Term Note PLC -- Public Limited Company RB -- Revenue Bond SBA -- Small Business Administration Ser -- Series STRIPS -- Separately Traded Registered Interest and Principal Securities TBA -- To Be Announced TVA -- Tennessee Valley Authority USD -- U.S. Dollar Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part. of the financial statements. - -------------------------------------------------------------------------------- 86 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Long Duration Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++: 52.2% Asset-Backed Securities 15.5% Financials 13.4% U.S Government Agency Obligations 5.7% U.S. Treasury Obligations 5.0% Consumer Discretionary 2.3% Utilities 1.9% Industrials 1.9% U.S. Government Mortgage-Backed Obligations 1.3% Telecommunication Services 0.8% Short-Term Investments ++Percentages based on total investments. - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- ASSET-BACKED SECURITIES -- 52.4% MORTGAGE RELATED SECURITIES -- 52.4% Ace Securities, Ser 2004-FM2, Cl A2A (B) 3.250%, 06/25/34 $ 924 $ 924 Ameriquest Mortgage Securities, Ser 2003-1, Cl M2 (B) 4.940%, 02/25/33 1,000 1,014 Amortizing Residential Collateral Trust, Ser 2000-BC2, Cl A2 (B) 3.330%, 04/25/30 535 534 Amortizing Residential Collateral Trust, Ser 2002-BC4, Cl M2 (B) 4.240%, 07/25/32 1,000 1,013 Bayview Financial Acquisition Trust, Ser 2005-A, Cl A1 (B) 3.560%, 02/28/40 700 700 Bayview Financial Acquisition Trust, Ser 2005-B, Cl 1A1 (B) 4.443%, 04/28/39 935 935 Bear Stearns Asset-Backed Securities, Ser 2004-FR3, Cl 1A1 (B) 3.340%, 02/25/30 1,071 1,072 Centex Home Equity, Ser 2002-C, Cl M2 (B) 4.240%, 09/25/32 1,000 1,005 Centex Home Equity, Ser 2002-D, Cl M2 (B) 5.140%, 12/25/32 635 645 Centex Home Equity, Ser 2005-A, Cl AV1 (B) 3.210%, 08/25/27 1,143 1,143 Chase Funding Mortgage Loan, Ser 2001-4, Cl 2M2 (B) 4.490%, 11/25/31 171 173 Citigroup Mortgage Loan Trust, Ser 2003-1, Cl WA2 6.500%, 10/25/33 197 202 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Citigroup Mortgage Loan Trust, Ser 2004-2, Cl 2A1 6.500%, 08/25/33 $ 870 $ 891 Countrywide Alternative Loan Trust, Ser 2005-24, Cl 1A1 (B) 3.814%, 07/20/35 1,095 1,106 Countrywide Asset-Backed Certificates, Ser 2003-BC1, Cl M1 (B) 4.010%, 12/25/32 1,150 1,150 Countrywide Asset-Backed Certificates, Ser 2005-1, Cl 3AV1 (B) 3.180%, 07/25/35 1,307 1,308 Countrywide Asset-Backed Certificates, Ser 2005-16, Cl 1A1 (B) 3.992%, 06/25/35 974 990 DSLA Mortgage Loan Trust, Ser 2004-AR1, Cl A2A (B) 3.500%, 09/19/44 502 503 Fremont Home Loan Trust, Ser 2004-4, Cl 2A1 (B) 3.250%, 03/25/35 1,063 1,063 Fremont Home Loan Trust, Ser 2004-4, Cl 2A2 (B) 3.370%, 03/25/35 945 948 GMAC Mortgage, Ser 2003-HE2, Cl A2 3.140%, 06/25/25 654 650 Greenpoint Mortgage Funding Trust, Ser 2005-HE2, Cl A1 (B) 3.264%, 04/15/30 1,075 1,075 Harborview Mortgage Loan Trust, Ser 2004-8, Cl 2A4A (B) 3.490%, 11/19/34 456 457 Harborview Mortgage Loan Trust, Ser 2005-1, Cl X, IO (C) 1.243%, 03/19/35 3,849 133 Home Equity Asset Trust, Ser 2002-1, Cl M2 (B) 4.490%, 11/25/32 680 690 Household Mortgage Loan Trust, Ser 2002-HC1, Cl M (B) 3.740%, 05/20/32 325 325 Indymac Home Equity Loan Asset-Backed Trust, Ser 2002-A, Cl M1 (B) 3.840%, 05/25/33 475 477 Indymac Home Equity Loan Asset-Backed Trust, Ser 2002-A, Cl M2 (B) 4.340%, 05/25/33 550 555 Indymac Index Mortgage Loan Trust, Ser 2004-AR12, Cl AX2 IO (C) 0.810%, 12/25/34 2,778 101 Indymac Index Mortgage Loan Trust, Ser 2004-AR5, Cl 2A1B (B) 3.490%, 08/25/34 574 575 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 87 - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Long Duration Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Indymac Index Mortgage Loan Trust, Ser 2004-AR6, Cl 6A1 (B) 5.528%, 10/25/34 $ 528 $ 539 Indymac Index Mortgage Loan Trust, Ser 2004-AR7, Cl A2 (B) 3.520%, 09/25/34 568 569 Indymac Index Mortgage Loan Trust, Ser 2004-AR8, Cl 2A2A (B) 3.490%, 11/25/34 443 443 Irwin Home Equity, Ser 2003-A, Cl M2 (B) 5.240%, 10/25/27 475 486 Irwin Home Equity, Ser 2005-A, Cl A1 (B) 3.260%, 09/25/17 1,027 1,027 Master Alternative Loans Trust, Ser 2003-3, Class 2A1 8.500%, 05/25/33 761 790 Master Seasoned Securities Trust, Ser 2005-1, Cl 4A1 (B) 5.902%, 10/25/32 1,031 1,049 Mid-State Trust, Ser 2004-1, Cl B 8.900%, 08/15/37 627 678 Morgan Stanley Capital I, Ser 2004-HE4, Cl A3 (B) 3.290%, 05/25/34 598 598 Morgan Stanley Dean Witter Capital, Ser 2002-HE1, Cl M2 (B) 4.390%, 07/25/32 1,000 1,017 Morgan Stanley Dean Witter Capital, Ser 2002-HE2, Cl M2 (B) 4.340%, 08/25/32 1,000 1,007 Ownit Mortgage Loan, Ser 2005-1, Cl A1 (B) 3.220%, 09/25/35 1,243 1,243 Residential Asset Mortgage Products, Ser 2004-RS11, Cl A2 (B) 3.360%, 12/25/33 925 928 Residential Funding Mortgage Securities, Ser 1999-HI8, Cl AI7 (D) 7.970%, 11/25/29 838 848 Saxon Asset Securities Trust, Ser 2004-3, Cl A3 (B) 3.430%, 12/26/34 500 502 Structure Adjustable Rate Mortgage Loan, Ser 2005-9, Cl 2A2A (B) 3.747%, 05/25/35 1 1 Washington Mutual, Ser 2000-1, Cl M2 (B) 3.890%, 01/25/40 954 959 Washington Mutual, Ser 2002-AR17, Cl 2A (B) 3.566%, 11/25/42 747 754 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Washington Mutual, Ser 2004-AR10, Cl A2A (B) 3.313%, 07/25/44 $ 454 $ 453 Washington Mutual, Ser 2004-AR12, Cl A4A (B) 3.313%, 10/25/44 280 279 Washington Mutual, Ser 2005-AR1, Cl A2A2 (B) 3.313%, 01/25/45 676 676 Washington Mutual, Ser 2005-AR2, Cl 2A21 (B) 3.393%, 01/25/45 726 728 Washington Mutual, Ser 2005-AR2, Cl 2A22 (B) 3.283%, 01/25/45 956 956 Washington Mutual, Ser 2005-AR6, Cl 2AB1 (B) 3.280%, 04/25/45 990 990 ------- Total Asset-Backed Securities (Cost $39,868) ($ Thousands) 39,877 ------- CORPORATE OBLIGATIONS -- 21.4% CONSUMER DISCRETIONARY -- 5.0% Alltel 4.656%, 05/17/07 525 529 DaimlerChrysler (B) 3.200%, 03/07/07 1,375 1,367 Ford Motor 8.900%, 01/15/32 590 530 7.450%, 07/16/31 360 301 General Motors 8.375%, 07/15/33 353 270 8.250%, 07/15/23 870 662 Rockwell Automation 5.200%, 01/15/98 136 128 ------- 3,787 ------- FINANCIALS -- 10.9% Bank of America, Ser A (A) 8.070%, 12/31/26 1,267 1,383 BankBoston Capital Trust I, Ser B 8.250%, 12/15/26 145 159 Chase Capital II, Ser B (B) 3.710%, 02/01/27 170 159 Chase Capital III, Ser C (B) 3.880%, 03/01/27 330 310 Countrywide Financial (B) 3.469%, 05/05/08 200 200 Countrywide Home Loans MTN, Ser E 6.935%, 07/16/07 690 726 - -------------------------------------------------------------------------------- 88 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Credit Suisse First Boston London (A) (B) 9.650%, 03/24/10 $ 669 $ 648 Deutsche Bank Luxembourg (A) 6.825%, 12/28/07 281 296 EOP Operating (B) 3.700%, 10/01/10 510 512 Farmers Insurance Exchange Capital (A) 8.625%, 05/01/24 160 198 HSBC Capital Trust II (A) 8.380%, 05/15/27 9 10 Meridian Funding (A) (B) 3.320%, 10/06/08 444 444 Nationwide Mutual Insurance (A) 6.600%, 04/15/34 305 317 Pemex Finance 8.020%, 05/15/07 600 624 Power Receivables Financial (A) 6.290%, 01/01/12 461 480 Simon Property Group 7.375%, 01/20/06 710 724 Spieker Properties 7.650%, 12/15/10 360 417 Zurich Capital Trust I (A) 8.376%, 06/01/37 600 655 ------- 8,262 ------- INDUSTRIALS -- 1.9% America West Airlines, Ser 01-1 7.100%, 04/02/21 181 195 American Airlines, Ser AMBC 3.857%, 07/09/10 268 262 Continental Airlines, Ser 00-2 7.707%, 04/02/21 176 174 Continental Airlines, Ser 2202-1, Cl G1 (B) 3.718%, 08/15/11 142 142 Continental Airlines, Ser AMBC 6.236%, 03/15/20 110 117 Delta Air Lines (B) 3.911%, 01/25/08 509 510 Delta Air Lines, Ser 02-1, Cl G-1 6.718%, 01/02/23 41 42 Northwest Airlines, Ser 00-1 8.072%, 10/01/19 38 42 ------- 1,484 ------- TELECOMMUNICATION SERVICES -- 1.3% New England Telephone & Telegraph 7.650%, 06/15/07 900 953 ------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- UTILITIES -- 2.3% Entergy Gulf States (B) 3.310%, 12/01/09 $ 525 $ 526 Power Contract Financing (A) 5.200%, 02/01/06 536 541 Sempra Energy 4.621%, 05/17/07 525 527 3.754%, 05/21/08 (B) 190 190 ------- 1,784 ------- Total Corporate Obligations (Cost $16,715) ($ Thousands) 16,270 ------- U.S. GOVERNMENT AGENCY OBLIGATIONS -- 13.5% FHLB (C) 2.961%, 06/15/05 860 859 FHLMC 6.500%, 08/01/29 991 1,030 2.970%, 06/29/05 (C) 2,445 2,439 FHLMC CMO, Ser 2459, Cl GE 6.500%, 04/15/31 628 633 FHLMC CMO, Ser 2469, Cl AK 6.000%, 04/15/30 700 710 FHLMC CMO, Ser 2748, Cl ZT 5.500%, 02/15/24 77 79 FHLMC, Ser 2391, Cl XE 6.000%, 05/15/27 521 530 FHLMC, Ser 2911, Cl Z 5.000%, 06/15/32 826 830 FNMA CMO, Ser 2001-13, Cl SA (B) 11.424%, 11/25/17 687 715 FNMA CMO, Ser 2001-48, Cl PD 6.500%, 06/25/20 783 795 FNMA CMO, Ser 2003-122, Cl ZQ 6.000%, 12/25/33 102 113 FNMA CMO, Ser 2004-12, Cl ZX 6.000%, 03/25/34 110 122 FNMA CMO, Ser 2004-31, Cl MZ 4.250%, 05/25/34 104 89 FNMA CMO, Ser 2004-80, Cl XZ 5.000%, 11/25/34 205 187 FNMA, Ser 2003-33, Cl PC 4.500%, 03/25/27 840 839 GNMA CMO, Ser 2003-112, Cl SG (B) 4.295%, 12/16/33 355 283 ------- Total U.S. Government Agency Obligations (Cost $10,155) ($ Thousands) 10,253 ------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 89 - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Long Duration Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- U.S. TREASURY OBLIGATION -- 5.7% U.S. Treasury Bonds Forward Commitments 6.250%, 08/15/23 (Forward Settlement Date 09/21/05) $3,534 $ 4,329 ------- Total U.S. Treasury Obligation (Cost $4,173) ($ Thousands) 4,329 ------- COMMERCIAL PAPER -- 4.7% FINANCIALS -- 4.7% Alcoa (C) 3.112%, 07/15/05 665 662 General Electric Capital (C) 3.020%, 06/24/05 1,090 1,088 IBM 3.923%, 06/27/01 745 745 National Rural Utilities (C) 3.038%, 06/16/05 1,090 1,089 ------- Total Commercial Paper (Cost $3,582) ($ Thousands) 3,584 ------- U.S. GOVERNMENT MORTGAGE-BACKED OBLIGATIONS -- 1.9% FNMA 7.000%, 04/01/34 859 906 5.500%, 10/01/17 to 02/01/18 552 560 ------- Total U.S. Government Mortgage-Backed Obligations (Cost $1,459) ($ Thousands) 1,466 ------- CASH EQUIVALENT -- 0.8% SEI Daily Income Trust, Prime Obligation Fund, Cl A+ 586,729 587 ------- Total Cash Equivalent (Cost $587) ($ Thousands) 587 ------- Total Investments -- 100.4% (Cost $76,539) ($ Thousands) $76,366 ======= - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- As of May 31, 2005 there were the following Interest Rate Swap agreements outstanding (See Note 2 in Notes to Financial Statements): - -------------------------------------------------------------------------------- Notional Net Unrealized Expiration Amount Depreciation Description Date ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Receive fixed rate of 4.840% and pay floating rate based on 3 month LIBOR (Counter Party: Barclays Capital) 05/04/20 1,510 38 Receive fixed rate of 5.143% and pay floating rate based on 3 month LIBOR (Counter Party: Barclays Capital) 04/11/20 1,850 108 Receive fixed rate of 4.771% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 02/02/20 6,360 117 Receive fixed rate of 4.993% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 03/03/20 3,070 130 Receive fixed rate of 4.995% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 01/10/20 19,675 838 Receive fixed rate of 5.148% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 04/04/20 2,900 171 Receive fixed rate of 4.905% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 12/14/19 12,440 413 Receive fixed rate of 5.118% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 12/02/19 13,500 753 - -------------------------------------------------------------------------------- Total $2,568 - -------------------------------------------------------------------------------- Percentages are based on Net Assets of $76,053,851. + See Note 3 in Notes to Financial Statements. (A) Security sold within the terms of a private placement memorandum, exempt from registration under section 144A of the Securities Act of 1933, as amended, and may be sold only to dealers in that program or other "accredited investors." These securities have been determined to be liquid under guidelines established by the Board of Directors. (B) Variable Rate Security -- The rate reported on the Schedule of Investments is the rate in effect as of May 31, 2005. (C) The rate reported is the effective yield at time of purchase. (D) Security, or portion of this security, has been pledged as collateral on open Swap Contracts. Cl -- Class CMO -- Collateralized Mortgage Obligation FHLB -- Federal Home Loan Bank FHLMC -- Federal Home Loan Mortgage Corporation FNMA -- Federal National Mortgage Association GNMA -- Government National Mortgage Association IO -- Interest Only LIBOR -- London InterBank Offering Rate MTN -- Medium Term Note Ser -- Series The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 90 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Extended Duration Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++ 46.0% Asset-Backed Securities: 15.5% Financials 15.1% U.S. Treasury Obligations 13.0% U.S. Government Agency Obligations 3.2% Consumer Discretionary 2.3% Utilities 1.9% Industrials Information Technology 1.2% Telecommunication Services 1.0% Short-Term Investments 0.8% U.S. Government Mortgage Backed Obligations ++Percentages based on total investments. - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- ASSET-BACKED SECURITIES -- 45.7% MORTGAGE RELATED SECURITIES -- 45.7% Ace Securities, Ser 2004-FM2, Cl A2A 3.250%, 06/25/34 (D) $ 796 $ 796 Ameriquest Mortgage Securities, Ser 2003-1, Cl M2 (D) 4.940%, 02/25/33 850 862 Amortizing Residential Collateral Trust, Ser 2002-BC4, Cl M2 (D) 4.240%, 07/25/32 850 861 Bayview Financial Acquisition Trust, Ser 2005-A, Cl A1 (A) (D) 3.560%, 02/28/40 600 600 Bayview Financial Acquisition Trust, Ser 2005-B, Cl 1A1 (D) 4.443%, 04/28/39 2,000 2,000 Bear Stearns Asset-Backed Securities, Ser 2004-FR3, Cl 1A1 (D) 3.340%, 02/25/30 937 938 Centex Home Equity, Ser 2002-C, Cl M2 (D) 4.240%, 09/25/32 875 880 Centex Home Equity, Ser 2005-A, Cl AV1 (D) 3.210%, 08/25/27 979 980 Chase Funding Mortgage Loan, Ser 2001-4, Cl 2M2 (D) 4.490%, 11/25/31 193 195 Citigroup Mortgage Loan Trust, Ser 2003-1, Cl WA2 (A) 6.500%, 10/25/33 352 361 Citigroup Mortgage Loan Trust, Ser 2004-2, Cl 2A1 6.500%, 08/25/33 791 810 Countrywide Alternative Loan Trust, Ser 2005-24, Cl 1A1 (D) 3.814%, 07/20/35 2,080 2,100 Countrywide Asset-Backed Certificates, Ser 2003-BC1, Cl M1 (D) 4.010%, 12/25/32 2,200 2,200 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Countrywide Asset-Backed Certificates, Ser 2005-1, Cl 3AV1 (D) 3.180%, 07/25/35 $ 1,114 $ 1,114 Countrywide Asset-Backed Certificates, Ser 2005-16, Cl 1A1 (D) 1.069%, 06/25/35 1,291 1,313 DSLA Mortgage Loan Trust, Ser 2004-AR1, Cl A2A (D) 3.500%, 09/19/44 561 562 EQCC Home Equity Loan Trust, Ser 1999-2, Cl A4F 6.753%, 08/25/27 307 310 Equifirst Mortgage Loan Trust, Ser 2004-3, Cl A1 (D) 3.420%, 12/25/34 2,300 2,306 Fremont Home Loan Trust, Ser 2004-4, Cl 2A1 (D) 3.250%, 03/25/35 916 916 Fremont Home Loan Trust, Ser 2004-4, Cl 2A2 (D) 3.370%, 03/25/35 2,750 2,760 GMAC Mortgage, Ser 2003-HE2, Cl A2 3.140%, 06/25/25 534 531 Greenpoint Mortgage Funding Trust, Ser 2005-HE2, Cl A1 (D) 3.264%, 04/15/30 2,620 2,620 Harborview Mortgage Loan Trust, Ser 2004-8, Cl 2A4A (D) 3.490%, 11/19/34 509 510 Harborview Mortgage Loan Trust, Ser 2005-1, Cl X, IO (D) 1.243%, 03/19/35 3,334 116 Home Equity Asset Trust, Ser 2002-1, Cl M2 (D) 4.490%, 11/25/32 575 583 Household Mortgage Loan Trust, Ser 2002-HC1, Cl M (D) 3.740%, 05/20/32 354 354 Indymac Home Equity Loan Asset-Backed Trust, Ser 2002-A, Cl M1 (D) 3.840%, 05/25/33 550 553 Indymac Home Equity Loan Asset-Backed Trust, Ser 2002-A, Cl M2 (D) 4.340%, 05/25/33 600 606 Indymac Index Mortgage Loan Trust, Ser 2004-AR12, Cl AX2, IO (D) 0.810%, 12/25/34 5,227 189 Indymac Index Mortgage Loan Trust, Ser 2004-AR5, Cl 2A1B (D) 3.490%, 08/25/34 647 648 Indymac Index Mortgage Loan Trust, Ser 2004-AR6, Cl 6A1 (D) 5.528%, 10/25/34 454 464 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 91 - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Extended Duration Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Indymac Index Mortgage Loan Trust, Ser 2004-AR7, Cl A2 (D) 3.520%, 09/25/34 $ 774 $ 775 Indymac Index Mortgage Loan Trust, Ser 2004-AR8, Cl 2A2A (D) 3.490%, 11/25/34 620 620 Irwin Home Equity, Ser 2001-2, Cl M2 4.340%, 07/25/26 (D) 1,330 1,332 Irwin Home Equity, Ser 2003-A, Cl M2 5.240%, 10/25/27 (D) 525 537 Irwin Home Equity, Ser 2005-A, Cl A1 3.260%, 09/25/17 (D) 864 865 Master Alternative Loans Trust, Ser 2003-3, Class 2A1 8.500%, 05/25/33 634 658 Master Seasoned Securities Trust, Ser 2005-1, Cl 4A1 (D) 5.902%, 10/25/32 2,239 2,278 Mid-State Trust, Ser 2004-1, Cl B 8.900%, 08/15/37 519 561 Morgan Stanley Capital I, Ser 2002-HE3, Cl M2 (D) 5.290%, 12/27/32 2,125 2,161 Morgan Stanley Capital I, Ser 2004-HE4, Cl A3 (D) 3.290%, 05/25/34 509 509 Morgan Stanley Dean Witter Capital, Ser 2002-HE1, Cl M2 (D) 4.390%, 07/25/32 850 865 Morgan Stanley Dean Witter Capital, Ser 2002-HE2, Cl M2 (D) 4.340%, 08/25/32 850 856 Novastar Home Equity Loan, Ser 2004-4, Cl A2A (D) 3.280%, 03/25/35 2,282 2,282 Novastar Home Equity Loan, Ser 2004-4, Cl A2B (D) 3.430%, 03/25/35 2,600 2,609 Ownit Mortgage Loan, Ser 2005-1, Cl A1 (D) 3.220%, 09/25/35 1,065 1,065 People's Choice Home Loan Securities Trust, Ser 2005-1, Cl 1A2 (D) 3.360%, 10/25/31 2,500 2,506 Residential Asset Mortgage Products, Ser 2004-RS11, Cl A2 (D) 3.360%, 12/25/33 2,750 2,760 Residential Asset Securities, Ser 2004-KS11, Cl AI2 (D) 3.360%, 01/25/34 2,750 2,760 Residential Funding Mortgage Securities, Ser 1999-HI8, Cl AI7 7.970%, 11/25/29 684 693 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Saxon Asset Securities Trust, Ser 2004-3, Cl A3 (D) 3.430%, 12/26/34 $ 2,500 $ 2,512 Specialty Underwriting & Residential Finance, Ser 2004-BC3, Cl A2B (D) 3.400%, 07/25/35 2,500 2,509 Structure Adjustable Rate Mortgage Loan, Ser 2005-9, Cl 2A2A (D) 3.747%, 05/25/35 3 3 Washington Mutual, Ser 2000-1, Cl M2 (D) 3.890%, 01/25/40 839 843 Washington Mutual, Ser 2002-AR17, Cl 2A (D) 3.566%, 11/25/42 1,245 1,257 Washington Mutual, Ser 2003-AR6, Cl A1 (D) 4.359%, 06/25/33 2,273 2,272 Washington Mutual, Ser 2004-AR12, Cl A4A (D) 3.340%, 10/25/44 233 233 Washington Mutual, Ser 2004-AR3, Cl A2 4.243%, 06/25/34 1,462 1,456 Washington Mutual, Ser 2005-AR1, Cl A2A2 (D) 3.313%, 01/25/45 579 579 Washington Mutual, Ser 2005-AR2, Cl 2A21 (D) 3.393%, 01/25/45 629 631 Washington Mutual, Ser 2005-AR2, Cl 2A22 (D) 3.283%, 01/25/45 827 827 Washington Mutual, Ser 2005-AR6, Cl 2AB1 (D) 3.280%, 04/25/45 841 841 -------- Total Asset-Backed Securities (Cost $70,690) ($ Thousands) 70,693 -------- CORPORATE OBLIGATIONS -- 17.9% CONSUMER DISCRETIONARY -- 3.2% Alltel 4.656%, 05/17/07 725 731 DaimlerChrysler (D) 3.200%, 03/07/07 855 850 Ford Motor 8.900%, 01/15/32 549 493 7.450%, 07/16/31 1,302 1,089 General Motors 8.375%, 07/15/33 1,311 1,004 8.250%, 07/15/23 730 555 Rockwell Automation 5.200%, 01/15/98 164 154 -------- 4,876 -------- - -------------------------------------------------------------------------------- 92 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- FINANCIALS -- 9.4% Bank of America, Ser A (A) 8.070%, 12/31/26 $ 1,728 $ 1,886 BankBoston Capital Trust I, Ser B 8.250%, 12/15/26 655 718 Chase Capital III, Ser C (D) 3.460%, 03/01/27 555 521 Countrywide Financial (D) 3.469%, 05/05/08 1,200 1,199 Countrywide Home Loans MTN, Ser E 6.935%, 07/16/07 597 628 Credit Suisse First Boston London (A) (D) 9.650%, 03/24/10 569 551 Deutsche Bank Luxembourg (A) 6.825%, 12/28/07 304 321 EOP Operating (D) 3.700%, 10/01/10 430 432 Farmers Insurance Exchange Capital (A) 8.625%, 05/01/24 175 216 HSBC Capital Trust II (A) 8.380%, 05/15/27 41 46 MBNA (D) 3.640%, 05/05/08 1,400 1,401 Meridian Funding (A) (D) 3.320%, 10/06/08 496 496 Nationwide Mutual Insurance (A) 6.600%, 04/15/34 522 543 Pemex Finance 8.020%, 05/15/07 1,153 1,200 Power Receivables Financial (A) 6.290%, 01/01/12 369 384 Simon Property Group 7.375%, 01/20/06 1,310 1,337 Spieker Properties 7.650%, 12/15/10 660 764 Woodbourne Pass-Through Trust (A) (D) 4.190%, 04/08/49 700 698 Zurich Capital Trust I (A) 8.376%, 06/01/37 1,150 1,256 -------- 14,597 -------- INDUSTRIALS -- 1.8% America West Airlines, Ser 01-1 7.100%, 04/02/21 186 201 American Airlines, Ser AMBC 3.857%, 07/09/10 1,140 1,114 Continental Airlines, Ser 00-2 7.707%, 04/02/21 176 174 Continental Airlines, Ser 2202-1, Cl G1 (D) 3.718%, 08/15/11 497 496 Continental Airlines, Ser AMBC 6.236%, 03/15/20 140 148 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Delta Air Lines (D) 3.911%, 01/25/08 $ 340 $ 340 Delta Air Lines, Ser 02-1, Cl G-1 6.718%, 01/02/23 184 191 Northwest Airlines, Ser 00-1 8.072%, 10/01/19 169 187 -------- 2,851 -------- TELECOMMUNICATION SERVICES -- 1.2% New England Telephone & Telegraph 7.650%, 06/15/07 1,786 1,891 -------- UTILITIES -- 2.3% Entergy Gulf States (D) 3.310%, 12/01/09 450 451 Pinnacle West Energy (A) (D) 3.630%, 04/01/07 1,300 1,300 Power Contract Financing (A) 5.200%, 02/01/06 447 451 Sempra Energy 4.621%, 05/17/07 450 451 3.754%, 05/21/08 (D) 870 870 -------- 3,523 -------- Total Corporate Obligations (Cost $28,131) ($ Thousands) 27,738 -------- U.S. TREASURY OBLIGATIONS -- 15.0% U.S. Treasury Bills (B) (C) 3.013%, 09/08/05 2,270 2,252 U.S. Treasury Bonds 6.250%, 08/15/23 3,961 4,880 U.S. Treasury Bonds Forward Commitments 6.250%, 08/15/23 (Forward Settlement Date 09/21/05) 13,142 16,102 -------- Total U.S. Treasury Obligations (Cost $22,648) ($ Thousands) 23,234 -------- U.S. GOVERNMENT AGENCY OBLIGATIONS -- 12.9% FHLB (B) 2.961%, 06/15/05 1,250 1,249 FHLMC 6.500%, 08/01/29 858 891 2.998%, 07/05/05 (B) 3,200 3,191 2.920%, 06/28/05 (B) 7,500 7,483 FHLMC CMO, Ser 2459, Cl GE 6.500%, 04/15/31 558 563 FHLMC CMO, Ser 2469, Cl AK 6.000%, 04/15/30 600 608 FHLMC CMO, Ser 2748, Cl ZT 5.500%, 02/15/24 327 336 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 93 - -------------------------------------------------------------------------------- SCHEDULE OF INVESTMENTS Extended Duration Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- FHLMC CMO, Ser 2820, Cl ZM 6.000%, 06/15/34 $ 141 $ 141 FHLMC, Ser 2391, Cl XE 6.000%, 05/15/27 487 495 FHLMC, Ser 2911, Cl Z 5.000%, 06/15/32 1,790 1,797 FNMA CMO, Ser 2001-13, Cl SA (D) 11.424%, 11/25/17 595 620 FNMA CMO, Ser 2001-48, Cl PD 6.500%, 06/25/20 677 688 FNMA CMO, Ser 2003-122, Cl ZQ 6.000%, 12/25/33 444 491 FNMA CMO, Ser 2004-12, Cl ZX 6.000%, 03/25/34 404 446 FNMA CMO, Ser 2004-80, Cl XZ 5.000%, 11/25/34 112 102 FNMA, Ser 2003-33, Cl PC 4.500%, 03/25/27 715 714 GNMA CMO, Ser 2003-112, Cl SG (D) 4.515%, 12/16/33 302 241 -------- Total U.S. Government Agency Obligations (Cost $19,816) ($ Thousands) 20,056 -------- COMMERCIAL PAPER (B) -- 6.0% FINANCIALS -- 6.0% Alcoa 3.112%, 07/15/05 3,655 3,641 General Electric Capital 3.020%, 06/24/05 2,515 2,510 National Rural Utilities 3.038%, 06/16/05 3,105 3,101 -------- Total Commercial Paper (Cost $9,252) ($ Thousands) 9,252 -------- CASH EQUIVALENT -- 1.0% SEI Daily Income Trust, Prime Obligation Fund, Cl A+ 1,475,775 1,476 -------- Total Cash Equivalent (Cost $1,476) ($ Thousands) 1,476 -------- U.S. GOVERNMENT MORTGAGE-BACKED OBLIGATIONS -- 0.8% FNMA 7.000%, 04/01/34 727 766 5.500%, 10/01/17 to 02/01/18 466 473 -------- Total U.S. Government Mortgage-Backed Obligations (Cost $1,233) ($ Thousands) 1,239 -------- Total Investments -- 99.3% (Cost $153,246) ($ Thousands) $153,688 ======== - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- As of May 31, 2005 there were the following Interest Rate Swap agreements outstanding (See Note 2 in Notes to Financial Statements): - -------------------------------------------------------------------------------- Notional Net Unrealized Expiration Amount Depreciation Description Date ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Receive fixed rate of 4.706% and pay floating rate based on 3 month LIBOR (Counter Party: Barclays Capital) 06/02/25 9,720 (2) Receive fixed rate of 4.938% and pay floating rate based on 3 month LIBOR (Counter Party: Citibank) 05/04/25 17,660 535 Receive fixed rate of 5.085% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 12/14/24 14,035 693 Receive fixed rate of 5.098% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 03/03/25 8,175 418 Receive fixed rate of 5.143% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 01/07/25 21,660 1,229 Receive fixed rate of 5.216% and pay floating rate based on 3 month LIBOR (Counter Party: Barclays Capital) 04/04/25 49,000 3,252 Receive fixed rate of 5.216% and pay floating rate based on 3 month LIBOR (Counter Party: Deutsche Bank) 04/04/25 43,000 2,853 Receive fixed rate of 4.795% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 02/14/25 6,890 81 Receive fixed rate of 4.965% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 01/21/25 27,755 941 Receive fixed rate of 5.084% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 12/14/24 21,050 1,038 Receive fixed rate of 5.216% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 04/04/25 50,000 3,318 Receive fixed rate of 5.293% and pay floating rate based on 3 month LIBOR (Counter Party: Credit Suisse First Boston) 12/02/24 4,000 304 - -------------------------------------------------------------------------------- Total $14,660 - -------------------------------------------------------------------------------- Percentages are based on Net Assets of $154,779,164. + See Note 3 in Notes to Financial Statements. (A) Security sold within the terms of a private placement memorandum, exempt from registration under section 144A of the Securities Act of 1933, as amended, and may be sold only to dealers in that program or other "accredited investors." These securities have been determined to be liquid under guidelines established by the Board of Directors. (B) The rate reported is the effective yield at time of purchase. (C) Security, or portion of this security, has been pledged as collateral on open swap contracts. (D) Variable Rate Security -- The rate reported on the Schedule of Investments is the rate in effect as of May 31, 2005. Cl -- Class CMO -- Collateralized Mortgage Obligation FHLB -- Federal Home Loan Bank FHLMC -- Federal Home Loan Mortgage Corporation FNMA -- Federal National Mortgage Association GNMA -- Government National Mortgage Association IO -- Interest Only LIBOR -- London InterBank Offering Rate MTN -- Medium Term Note Ser -- Series The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 94 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS International Equity Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++: 28.3% Financials 10.7% Consumer Discretionary 9.4% Industrials 9.2% Telecommunication Services 7.3% Consumer Staples 7.3% Energy 6.2% Health Care 5.7% Short-Term Investments 5.5% Material 3.8% Asset-Backed Securities 3.2% Information Technology 2.7% Utilities 0.6% Certificate of Deposit 0.1% U.S. Treasury Obligations 0.0% Foreign Convertible Bonds 0.0% Rights ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 95.0% AUSTRALIA -- 2.5% Amcor (B) 170,487 $ 876 BHP Billiton 660,900 8,354 BlueScope Steel 258,500 1,587 Brambles Industries 1,095,815 6,602 Foster's Group 141,637 580 Insurance Australia Group 260,931 1,157 Macquarie Airports 294,200 816 National Australia Bank 225,000 5,363 Newcrest Mining 346,630 3,494 Orica 19,646 234 Promina Group 165,194 638 Qantas Airways 293,778 717 QBE Insurance Group 449,870 5,002 Rinker Group 185,691 1,734 Telstra 531,317 2,021 Wesfarmers (B) 40,486 1,127 Woolworths 101,658 1,238 ---------- 41,540 ---------- AUSTRIA -- 0.7% Erste Bank der Oesterreichischen Sparkassen 28,610 1,412 OMV 9,000 3,167 Raiffeisen International Bank Holding* 6,831 409 Telekom Austria (B) 389,653 7,289 ---------- 12,277 ---------- BELGIUM -- 0.7% Delhaize Group (B) 42,600 2,507 Fortis (B) 120,242 3,278 KBC Groep (B) 65,350 5,318 UCB 14,057 644 ---------- 11,747 ---------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- BRAZIL -- 0.1% Cia de Saneamento Basico do Estado de Sao Paulo 6,170,000 $ 370 Gerdau ADR 46,950 472 Uniao de Bancos Brasileiros GDR 23,300 836 ---------- 1,678 ---------- CANADA -- 2.1% Abitibi-Consolidated 107,000 472 Alcan 148,100 4,464 Bank of Nova Scotia 86,400 2,738 Cameco 40,100 1,652 Great-West Lifeco 2,200 47 Inco 55,500 2,142 Manulife Financial 82,700 3,803 Methanex 37,900 696 Noranda 23,573 376 Potash Saskatchewan 37,900 3,407 Research In Motion* 47,200 3,909 Rogers Communications, Cl B 114,700 3,475 Royal Bank of Canada 35,131 2,101 Teck Cominco, Cl B 54,300 1,766 TELUS 49,300 1,583 Thomson 46,200 1,559 Toronto-Dominion Bank 21,500 919 ---------- 35,109 ---------- CHINA -- 0.0% China Petroleum & Chemical 1,106,000 405 ---------- DENMARK -- 0.3% Danske Bank 61,300 1,764 Novo-Nordisk, Cl B 30,000 1,548 TDC 48,400 2,144 ---------- 5,456 ---------- FINLAND -- 0.6% Fortum (B) 180,250 2,742 Nokia 396,750 6,682 UPM-Kymmene 36,900 715 ---------- 10,139 ---------- FRANCE -- 10.8% Accor (B) 46,825 2,168 Air Liquide (B) 12,595 2,197 Assurances Generales de France (B) 110,500 8,896 AXA 421,665 10,314 BNP Paribas (B) 169,856 11,462 Bouygues (B) 236,482 9,131 Carrefour 19,799 985 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 95 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS International Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Cie Generale D'Optique Essilor International (B) 13,760 $ 947 Compagnie Generale des Etablissements Michelin, Cl B (B) 12,968 822 Credit Agricole (B) 87,918 2,287 Dassault Systemes (B) 130,652 6,082 France Telecom (B)* 668,703 19,214 Groupe Danone (B) 112,542 10,387 L'Oreal (B) 20,195 1,470 Lafarge (B) 9,999 912 Lagardere S.C.A. (B) 68,050 4,865 Publicis Groupe 143,600 4,225 Renault (B) 42,303 3,633 Sanofi-Aventis (B) 385,981 34,933 Schneider Electric (B) 48,211 3,560 Societe Generale (B) 73,787 7,275 Total (B) 113,658 25,191 Vinci 57,570 4,326 Vivendi Universal (B) 207,345 6,339 ---------- 181,621 ---------- GERMANY -- 6.4% Allianz 22,076 2,610 BASF 60,100 4,001 Bayer 130,926 4,412 Bayerische Hypo-und Vereinsbank* 410,696 10,157 Bayerische Motoren Werke (B) 103,958 4,518 Continental 55,500 3,945 DaimlerChrysler 126,906 5,110 Deutsche Bank 15,245 1,189 Deutsche Boerse (B) 18,799 1,387 Deutsche Telekom 501,214 9,345 E.ON 76,960 6,687 HeidelbergCement 34,569 2,222 Hypo Real Estate Holding (B) 45,750 1,812 Infineon Technologies (B)* 447,485 3,934 Lanxess* 465 10 Linde 41,950 2,859 MAN (B) 53,100 2,353 Merck KGaA (B) 72,800 5,651 Muenchener Rueckversicherungs 39,380 4,324 SAP 61,005 10,093 Siemens* 234,649 17,196 Volkswagen (B) 67,395 2,974 ---------- 106,789 ---------- HONG KONG -- 1.2% China Mobile 1,804,800 6,600 CNOOC 7,359,100 4,068 Esprit Holdings 128,500 921 Hang Lung Group 255,000 436 Hang Lung Properties 525,000 763 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Hutchison Whampoa 433,800 $ 3,778 Li & Fung 1,026,000 1,965 PCCW 1,111,000 678 Sun Hung Kai Properties 86,000 821 Swire Pacific, Cl A 84,500 722 ---------- 20,752 ---------- HUNGARY -- 0.0% Mol Magyar Olaj- es Gazipari 7,600 569 ---------- INDIA -- 0.2% Canara Bank 100,000 456 ICICI Bank 50,069 448 Infosys Technologies ADR (B) 15,700 1,136 Punjab National Bank 46,000 402 ---------- 2,442 ---------- IRELAND -- 0.4% Anglo Irish Bank 231,080 2,711 CRH 78,234 1,982 Depfa Bank 115,100 1,853 ---------- 6,546 ---------- ISRAEL -- 0.1% Bank Hapoalim 280,300 984 ---------- ITALY -- 2.9% Banca Popolare di Milano (B) 258,705 2,631 Enel (B) 432,500 3,898 ENI - Ente Nazionale Idrocarburi (B) 721,748 18,501 Fiat* 20,590 118 Sanpaolo IMI (B) 538,400 7,486 Telecom Italia 1,050,514 3,385 Telecom Italia RNC* 3,100,655 8,231 UniCredito Italiano (B) 803,091 4,170 ---------- 48,420 ---------- JAPAN -- 21.7% Advantest 23,400 1,776 Aeon 218,000 3,390 Aiful 37,025 2,745 Asatsu-DK 30,800 894 Bridgestone 55,000 1,095 Canon 427,341 23,394 Central Japan Railway 83 674 Chubu Electric Power 33,900 793 Dai Nippon Printing 600,000 9,575 Daito Trust Construction 22,200 842 Daiwa Securities Group 78,000 499 East Japan Railway 574 2,871 Fanuc 145,000 9,068 Fast Retailing 32,200 1,715 - -------------------------------------------------------------------------------- 96 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Fuji Photo Film (B) 152,000 $ 4,767 Furukawa Electric* 211,000 883 Hirose Electric 20,700 2,216 Hitachi 1,962,100 11,870 Honda Motor 74,800 3,706 Hoya 7,200 810 Ibiden 73,000 1,903 Isetan 142,900 1,855 Ito-Yokado 158,400 5,423 Itochu 357,100 1,746 Japan Airlines (B) 308,000 892 Japan Tobacco 155 2,042 JFE Holdings 104,100 2,642 Kansai Electric Power 379,000 7,420 Kao 293,000 6,837 Kobe Steel 550,300 970 Komatsu 1,597,000 12,077 Kyocera 151,600 11,717 Lawson 66,700 2,451 Matsushita Electric Industrial 668,000 10,053 Millea Holdings 1,012 13,521 Mitsubishi 394,000 5,261 Mitsubishi Electric 714,000 3,922 Mitsubishi Estate 720,000 7,830 Mitsubishi Tokyo Financial Group 328 2,754 Mitsui 96,000 868 Mitsui OSK Lines 577,500 3,510 Mitsui Sumitomo Insurance 410,000 3,778 Mitsui Trust Holdings 454,400 4,499 Mizuho Financial Group 343 1,636 Murata Manufacturing 14,600 750 NEC 1,275,000 7,134 Nidec 9,800 1,082 Nikon (B) 97,000 1,088 Nintendo 9,700 1,039 Nippon Electric Glass 140,000 2,188 Nippon Meat Packers 115,200 1,438 Nippon Mining Holdings 284,400 1,573 Nippon Telegraph & Telephone 1,178 4,853 Nissan Motor 1,277,201 12,645 Nitto Denko 20,700 1,174 Nomura Holdings 312,000 3,980 NTT DoCoMo 2,754 4,165 OJI Paper 43,000 230 Oriental Land 94,800 5,665 ORIX 90,300 13,129 Osaka Gas 875,000 2,728 Promise 41,050 2,579 Ricoh 83,000 1,367 Rohm 50,400 4,761 Sankyo 114,200 2,347 Sanyo Shinpan Finance 21,600 1,513 Sega Sammy Holdings 19,400 1,129 Sekisui House 134,000 1,327 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Shimamura 9,300 $ 725 Shionogi 59,000 818 SMC (B) 19,400 2,079 Softbank 39,500 1,433 Sompo Japan Insurance 76,000 778 Sony 238,300 8,977 Square Enix 108,400 3,138 Sumitomo 296,000 2,392 Sumitomo Chemical 253,000 1,197 Sumitomo Forestry 82,000 722 Sumitomo Heavy Industries 369,000 1,842 Sumitomo Mitsui Financial Group 2,868 18,761 Suzuki Motor 184,700 3,042 T&D Holdings 14,900 755 Takeda Pharmaceutical 65,500 3,178 TDK 14,000 1,029 Tohoku Electric Power 35,600 720 Tokyo Electric Power 91,000 2,149 Tokyo Electron 46,300 2,612 Tokyo Gas (B) 1,481,000 5,854 Toyota Motor 107,000 3,832 UFJ Holdings* 1,261 6,447 Uni-Charm 17,400 714 Yahoo! Japan 327 664 Yamada Denki 29,900 1,642 Yamanouchi Pharmaceutical 167,500 6,030 Yamato Transport 172,100 2,427 ---------- 363,031 ---------- LUXEMBOURG -- 0.3% Arcelor 180,320 3,605 SES GLOBAL FDR 65,337 895 ---------- 4,500 ---------- MEXICO -- 0.7% America Movil, Ser L ADR (B) 151,985 8,615 Fomento Economico Mexicano ADR 52,750 2,888 ---------- 11,503 ---------- NETHERLANDS -- 6.6% ABN AMRO Holding (B) 790,034 18,398 Aegon 216,148 2,773 Akzo Nobel 84,775 3,340 CSM 94,004 2,764 Euronext 22,571 765 European Aeronautic Defense and Space 34,510 1,024 Heineken 115,738 3,681 Heineken Holding, Cl A 49,045 1,397 ING Groep (B) 613,191 17,021 Koninklijke Ahold* 86,225 653 Koninklijke Philips Electronics 34,600 885 Reed Elsevier 35,143 487 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 97 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS International Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Royal Dutch Petroleum 444,871 $ 25,982 Royal Dutch Petroleum (New York Shares) 34,500 2,021 Royal KPN 815,376 6,494 Royal Numico* 15,245 610 TNT 180,100 4,614 Unilever 235,236 15,656 VNU 77,535 2,115 ---------- 110,680 ---------- NEW ZEALAND -- 0.2% Telecom (B) 860,217 3,621 ---------- NORWAY -- 1.0% DNB (B) 108,700 1,060 Norsk Hydro (B) 102,950 8,417 Norske Skogindustrier 37,200 576 Statoil (B) 176,150 3,106 Tandberg 269,150 2,897 ---------- 16,056 ---------- PHILIPPINES -- 0.0% Philippine Long Distance Telephone* 19,800 538 ---------- PORTUGAL -- 0.2% Portugal Telecom 361,623 3,706 ---------- SINGAPORE -- 0.7% Flextronics International* 107,100 1,368 Singapore Telecommunications 4,200,360 6,569 United Overseas Bank 364,000 3,131 ---------- 11,068 ---------- SOUTH AFRICA -- 0.5% ABSA Group 95,800 1,170 Sanlam 421,700 700 Sasol 220,483 5,492 Telkom 30,700 505 ---------- 7,867 ---------- SOUTH KOREA -- 1.1% Honam Petrochemical 12,900 508 Hyundai Motor 17,600 990 Industrial Bank of Korea 47,100 418 INI Steel 29,790 442 Kookmin Bank 9,600 422 Nong Shim 1,170 353 POSCO 4,200 750 Samsung Electronics 3,250 1,576 Samsung Electronics GDR 38,634 9,291 Shinhan Financial Group 142,300 3,640 ---------- 18,390 ---------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- SPAIN -- 3.9% ACS Actividades 179,685 $ 4,792 Altadis 27,500 1,132 Banco Bilbao Vizcaya Argentaria 614,593 9,668 Banco Santander Central Hispano (B) 918,035 10,508 Endesa 130,200 2,841 Iberdrola 53,161 1,362 Inditex 65,535 1,864 Repsol (B) 561,298 14,076 Telefonica (B) 1,155,764 19,423 ---------- 65,666 ---------- SWEDEN -- 1.8% Atlas Copco, Cl A* 127,800 1,552 Nordea Bank 392,866 3,608 Sandvik 20,000 793 SKF* 59,462 200 SKF, Cl B 300,659 3,106 Svenska Cellulosa, Cl B 57,600 1,968 Telefonaktiebolaget LM Ericsson ADR (B) 117,450 3,691 Telefonaktiebolaget LM Ericsson, Cl B 1,071,000 3,385 Volvo, Cl B (B) 287,700 11,773 ---------- 30,076 ---------- SWITZERLAND -- 7.5% Adecco (B) 12,698 603 Compagnie Financiere Richemont, Cl A* 137,883 4,208 Credit Suisse Group (B) 193,494 7,771 Geberit 1,262 831 Holcim (B) 187,698 11,443 Micronas Semiconductor Holdings* 12,000 451 Nestle 99,754 26,321 Novartis 579,402 28,365 Roche Holding 59,518 7,525 Serono, Cl B 1,061 649 SGS 3,885 2,735 Swiss Reinsurance (B) 50,367 3,127 Swisscom 6,991 2,347 Syngenta* 8,814 915 Synthes 8,728 961 UBS 310,750 24,024 Xstrata* 200,388 3,601 ---------- 125,877 ---------- TAIWAN -- 0.6% China Steel 574,000 560 Chunghwa Telecom ADR (B) 164,088 3,416 Compal Electronics 1,312,000 1,259 - -------------------------------------------------------------------------------- 98 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Far EasTone Telecommunications GDR 19,700 $ 378 HON HAI Precision Industry GDR (B) 128,840 1,334 Taiwan Semiconductor Manufacturing 486,000 882 Taiwan Semiconductor Manufacturing ADR 257,977 2,376 ---------- 10,205 ---------- THAILAND -- 0.0% PTT 101,300 491 ---------- TURKEY -- 0.0% Ford Otomotiv Sanayi 67,750 425 ---------- UNITED KINGDOM -- 19.2% Allied Domecq 812,036 10,256 ARM Holdings 151,859 299 AstraZeneca 85,821 3,652 AstraZeneca (SEK) 135,318 5,784 Aviva 247,727 2,781 BAA 157,109 1,782 Barclays 1,373,611 13,056 BHP Billiton 971,901 11,762 BOC Group 328,856 6,030 BP 2,772,656 27,844 Bradford & Bingley 135,921 765 Brambles Industries 82,265 451 British American Tobacco 255,420 4,860 British Land 61,476 975 BT Group 1,106,500 4,301 Bunzl 220,899 2,166 Cadbury Schweppes 1,714,770 16,751 Carnival 50,500 2,766 Diageo 121,170 1,746 GlaxoSmithKline 816,439 20,237 GUS 488,111 7,531 Hanson 73,653 682 Hays 1,766,030 3,999 HBOS 554,318 8,087 HSBC Holdings 815,420 12,900 Imperial Tobacco Group (B) 434,753 11,798 Intercontinental Hotels Group 217,222 2,524 ITV 641,496 1,339 J Sainsbury 329,825 1,718 Lloyds TSB Group 168,886 1,394 Mitchells & Butlers 262,000 1,542 National Grid Transco 1,169,078 11,453 Next 33,959 891 O2 2,066,700 4,802 Pearson 349,807 4,201 Persimmon 123,500 1,683 Punch Taverns 127,890 1,590 Reckitt Benckiser 334,886 10,254 Reed Elsevier 1,088,486 10,415 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Rio Tinto 183,300 $ 5,452 Rolls-Royce Group* 800,314 3,956 Rolls-Royce Group, Cl B 34,530,750 64 Royal & Sun Alliance Insurance Group 527,000 740 Royal Bank of Scotland Group 563,988 16,611 Scottish & Southern Energy 63,060 1,128 Scottish Power 315,900 2,669 Shell Transport & Trading 357,335 3,110 Signet Group 1,259,700 2,359 Standard Chartered 168,193 3,056 Tate & Lyle 220,800 1,905 Taylor Woodrow 218,200 1,260 Trinity Mirror 64,100 728 Unilever 396,180 3,874 Vodafone Group 13,217,822 33,425 Whitbread 98,985 1,642 Wimpey George 176,600 1,370 Wolseley 106,541 2,187 ---------- 322,603 ---------- Total Common Stock (Cost $1,378,098) ($ Thousands) 1,592,777 ---------- CORPORATE OBLIGATIONS (C) (D) -- 8.8% FINANCIALS -- 8.8% ASIF Global Financing XV (F) 3.020%, 09/02/05 $ 470 471 Allstate Life Global Funding II, MTN (F) 3.080%, 06/15/06 2,331 2,331 American General Finance (F) 3.090%, 06/15/06 4,561 4,561 Bear Stearns EXL 3.100%, 06/15/06 9,021 9,021 CCN Bluegrass (F) 3.170%, 02/21/06 3,294 3,294 CIT Group MTN 3.260%, 05/12/06 12,670 12,670 3.199%, 07/29/05 577 578 3.163%, 04/19/06 1,267 1,268 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 2,534 2,534 Countrywide Home Loans MTN, Ser A 3.120%, 03/21/06 4,156 4,156 Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 1,520 1,520 3.152%, 06/23/05 3,091 3,091 3.040%, 11/30/05 5,777 5,777 2.810%, 01/31/06 1,115 1,115 Dekabank (F) 3.206%, 05/19/06 9,376 9,374 - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 99 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS International Equity Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Five Finance MTN (F) 3.100%, 09/22/05 $ 7,197 $ 7,195 Harrier Finance Funding MTN (F) 3.034%, 09/15/05 1,470 1,470 Harrier Finance Funding MTN, Ser 1 (F) 3.016%, 06/15/05 4,409 4,409 Irish Life & Permanent MTN, SerX (F) 3.101%, 06/22/06 4,713 4,713 Jackson National Life Funding (F) 3.064%, 05/01/06 11,150 11,150 K2 MTN (F) 2.995%, 12/12/05 304 304 Lakeside Funding 3.120%, 06/08/05 2,534 2,534 Liberty Lighthouse US Capital MTN (F) 3.118%, 05/10/06 5,068 5,065 Morgan Stanley EXL 3.089%, 05/04/06 1,774 1,774 Morgan Stanley EXL, Ser S 3.085%, 06/02/06 2,534 2,534 Nationwide Building Society (F) 3.090%, 01/06/06 5,068 5,068 3.083%, 10/28/05 2,534 2,534 Northern Rock (F) 3.099%, 02/03/06 5,220 5,220 Pacific Life Global Funding (F) 3.080%, 06/13/06 3,801 3,801 Premium Asset Trust, Ser 2004-01 (F) 3.100%, 02/06/06 3,750 3,753 Premium Asset Trust, Ser 2004-10 (F) 3.100%, 04/14/06 7,095 7,095 SLM EXL, Ser S (F) 3.090%, 05/15/06 5,575 5,575 SLM MTN, Ser X (F) 3.090%, 06/20/06 10,136 10,136 White Pine Finance MTN, Ser 1 (F) 3.071%, 11/01/05 2,230 2,230 ---------- Total Corporate Obligations (Cost $148,321) ($ Thousands) 148,321 ---------- ASSET-BACKED SECURITIES (C) (D) (F) -- 4.5% AUTOMOTIVE -- 0.8% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 12,260 12,260 Drivetime Auto Owner Trust 3.110%, 03/15/06 1,208 1,208 ---------- 13,468 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- MORTGAGE RELATED SECURITIES -- 3.7% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 $ 3,244 $ 3,244 Blue Heron Funding, Ser 6A, Cl A1 3.129%, 06/21/05 1,014 1,014 Blue Heron Funding, Ser 9A, Cl A1 3.120%, 02/22/06 5,068 5,068 CCN Independence IV 3.160%, 10/17/05 2,787 2,787 3.160%, 01/17/06 1,774 1,774 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 2,914 2,914 Commodore, Ser 2003-2A, Cl A1MM 3.100%, 12/12/38 2,331 2,331 Duke Funding 2.680%, 04/10/06 3,801 3,801 Harwood Street Funding I, Ser 2004-1A, Cl Note 3.140%, 09/20/05 7,197 7,197 Harwood Street Funding II, Ser 2005-A1, Cl NOTE 3.141%, 06/25/06 5,068 5,068 Orchard Structured Finance CDO, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 4,953 4,953 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 8,150 8,150 RMAC, Ser 2004-NS2A, Cl A1 3.080%, 06/13/05 903 903 RMAC, Ser 2004-NS3A, Cl A1 3.090%, 06/12/05 2,130 2,130 Saturn Ventures II 3.150%, 08/08/05 5,626 5,626 TIAA Real Estate, Ser 2003-1A, Cl A1 3.131%, 03/28/06 3,272 3,272 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 1,267 1,267 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMC 3.030%, 09/15/05 912 912 ---------- 62,411 ---------- Total Asset-Backed Securities (Cost $75,879) ($ Thousands) 75,879 ---------- - -------------------------------------------------------------------------------- 100 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- COMMERCIAL PAPER (E) -- 2.3% FINANCIALS -- 2.3% Ajax Bambino Funding 3.119%, 07/06/05 (C) $ 5,068 $ 5,053 Altimira Funding 3.004%, 06/16/05 (C) 660 659 Beethoven Funding 3.109%, 07/05/05 (C) 2,534 2,527 3.013%, 06/13/05 (C) 2,547 2,545 Brahms Funding 3.000%, 06/02/05 (C) 6,536 6,535 Capital One Multi-Asset Funding 3.025%, 06/20/05 (C) 2,027 2,024 3.002%, 06/07/05 (C) 1,774 1,773 Cobbler Funding 3.057%, 06/28/05 (C) 928 925 Cre-8 Funding 3.106%, 06/23/05 (C) 1,774 1,770 Golden Fish 3.066%, 06/22/05 (C) 2,638 2,633 3.065%, 06/20/05 (C) 1,646 1,643 3.055%, 06/21/05 (C) 760 759 3.053%, 06/14/05 (C) 2,038 2,036 Rams Funding 3.121%, 06/06/05 (C) 2,534 2,533 Wells Fargo 2.940%, 06/06/05 4,253 4,251 ---------- Total Commercial Paper (Cost $37,666) ($ Thousands) 37,666 ---------- CASH EQUIVALENT -- 1.8% SEI Daily Income Trust, Prime Obligations Fund, Cl A+ 30,672,273 30,672 ---------- Total Cash Equivalent (Cost $30,672) ($ Thousands) 30,672 ---------- MASTER NOTES (C) -- 1.1% Bank of America Master Notes 3.143%, 06/01/05 12,670 12,670 Bear Stearns Master Notes 3.234%, 06/01/05 6,082 6,082 ---------- Total Master Notes (Cost $18,752) ($ Thousands) 18,752 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- TIME DEPOSITS -- 0.8% Brown Brothers Harriman 5.900%, 06/01/05 NZD 82 $ 58 5.500%, 06/01/05 ZAR 358 53 4.600%, 06/01/05 AUD 158 119 3.869%, 06/01/05 GBP 384 700 2.520%, 06/01/05 $12,202 12,202 1.600%, 06/01/05 CAD 201 160 1.250%, 06/01/05 DKK 774 129 1.100%, 06/01/05 SEK 1,485 201 1.010%, 06/01/05 SGD 137 82 0.790%, 06/01/05 NOK 1,999 312 ---------- Total Time Deposits (Cost $14,016) ($ Thousands) 14,016 ---------- CERTIFICATES OF DEPOSIT (C)(D) -- 0.7% U.S. Trust 3.215%, 09/14/05 5,068 5,068 Washington Mutual Bank 3.270%, 08/18/05 5,980 5,980 ---------- Total Certificates of Deposit (Cost $11,048) ($ Thousands) 11,048 ---------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 101 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS International Equity Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- PREFERRED STOCK -- 0.6% AUSTRALIA -- 0.0% News 38,229 $ 629 ---------- BRAZIL -- 0.2% Braskem 62,280 593 Petroleo Brasileiro 30,000 1,265 Suzano Bahia Sul Papel e Celulose 64,000 281 Usinas Siderurgicas de Minas Gerais, Cl A 29,000 550 ---------- 2,689 ---------- GERMANY -- 0.4% Porsche 9,435 6,582 ---------- Total Preferred Stock (Cost $8,541) ($ Thousands) 9,900 ---------- U.S. TREASURY OBLIGATIONS -- 0.1% U.S. Treasury Bills (A) 2.932%, 08/25/05 $ 1,805 1,793 ---------- Total U.S. Treasury Obligations (Cost $1,793) ($ Thousands) 1,793 ---------- FOREIGN CONVERTIBLE BONDS -- 0.0% Credit Suisse Group CV to 32.3311 Shares (CHF) 6.000%, 12/23/05 317 350 ---------- Total Foreign Convertible Bonds (Cost $229) ($ Thousands) 350 ---------- Number of Rights --------- RIGHTS -- 0.0% SWEDEN -- 0.0% Sandvik, Expires 06/08/05* (B) 20 12 ---------- Total Rights (Cost $0) ($ Thousands) 12 ---------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- REPURCHASE AGREEMENTS (C) -- 3.0% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $7,976,086 (collateralized by U.S. Government Obligation, par value $8,300,981, 0.000%, 12/28/05; with total market value $8,134,961) $ 7,975 $ 7,975 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $6,335,537 (collateralized by various U.S. Government Obligations, ranging in par value $76,780- $3,826,037, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $6,461,933) 6,335 6,335 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $35,479,016 (collateralized by various U.S. Government Obligations, ranging in par value $1,480,617- $9,528,096, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $36,185,653) 35,476 35,476 ---------- Total Repurchase Agreements (Cost $49,786) ($ Thousands) 49,786 ---------- Total Investments -- 118.7% (Cost $1,774,801) ($ Thousands) 1,990,972 ---------- OTHER ASSETS AND LIABILITIES -- (18.7)% Payable upon Return on Securities Loaned (337,201) Payable for Capital Shares Redeemed (6,451) Payable for Investment Securities Purchased (6,337) Investment Advisory Fees Payable (557) Trustees' Fees Payable (6) Other Assets and Liabilities, Net 36,834 ---------- Total Other Assets and Liabilities (313,718) ---------- Net Assets -- 100.0% $1,677,254 ========== - -------------------------------------------------------------------------------- 102 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Value Description ($ Thousands) - -------------------------------------------------------------------------------- NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) $1,576,912 Undistributed net investment income 14,517 Accumulated net realized loss on investments and futures contracts (130,073) Net unrealized appreciation on investments 216,171 Net unrealized appreciation on futures contracts 127 Net unrealized depreciation on foreign currencies and translation of other assets and liabilities denominated in foreign currencies (400) ---------- Net Assets $1,677,254 ========== Net Asset Value, Offering and Redemption Price Per Share -- Class A ($1,677,254,020 / 150,362,442 shares) $11.15 ====== A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see Note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- UNREALIZED CONTRACT APPRECIATION TYPE OF NUMBER OF VALUE EXPIRATION (DEPRECIATION) CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- DJ Euro Stoxx 464 $17,703 06/20/05 $ 356 FTSE 100 Index 159 14,385 06/20/05 48 Hang Seng Index 13 1,162 06/30/05 21 SPI 200 Index 49 3,821 06/21/05 (10) Topix Index 108 11,439 06/13/05 (288) ----- $ 127 ----- - -------------------------------------------------------------------------------- Description - -------------------------------------------------------------------------------- * Non-Income Producing Security + See Note 3 in Notes to Financial Statements. (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9) The total value of securities on loan at May 31, 2005 was $315,327 ($Thousands). (C) This security was purchased with cash collateral held from securities lending. The total value of such securities as of May 31, 2005 was $337,201 ($Thousands). (See Note 9) (D) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (E) The rate reported is the effective yield at time of purchase. (F) 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." ADR -- American Depositary Receipt AUD -- Australian Dollar CAD -- Canadian Dollar Cl -- Class CV -- Convertible DKK -- Danish Krone EXL -- Extendable Maturity FDR -- Fiduciary Depositary Receipt GBP -- Great Britain Pound GDR -- Global Depositary Receipt MTN -- Medium Term Note NOK -- Norwegian Krone NZD -- New Zealand Dollar SEK -- Swedish Krona Ser -- Series SGD -- Singapore Dollar ZAR -- South African Rand The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 103 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS World Equity Ex-US Fund May 31, 2005 - -------------------------------------------------------------------------------- [THE FOLLOWING WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.] SECTOR WEIGHTINGS (UNAUDITED)++: 27.1% Financials 10.3% Industrials 10.0% Telecommunication Services 9.4% Consumer Discretionary 7.6% Energy 6.6% Health Care 5.9% Materials 5.5% Consumer Staples 4.8% Exchange Traded Fund 3.7% Information Technology 3.5% Short-Term Investments 2.9% Utilities 2.2% Asset-Backed Securities 0.3% Certificates of Deposit 0.2% U.S. Treasury Obligations 0.0% Foreign Convertible Bonds 0.0% Rights ++Percentages based on total investments. - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- COMMON STOCK -- 95.9% ARGENTINA -- 0.2% Telecom Argentina ADR* 35,130 $ 429 -------- AUSTRALIA -- 2.8% Amcor 20,613 106 BHP Billiton 90,400 1,143 BlueScope Steel 50,300 309 Brambles Industries (B) 154,685 932 Foster's Group 24,894 102 Insurance Australia Group 35,069 155 Macquarie Airports 132,000 366 National Australia Bank 30,700 732 Newcrest Mining 86,900 876 News 2,988 49 Promina Group 28,206 109 Qantas Airways 39,018 95 QBE Insurance Group 103,861 1,155 Rinker Group 23,332 218 Wesfarmers 4,614 128 Woolworths 13,209 161 -------- 6,636 -------- AUSTRIA -- 0.3% Erste Bank der Oesterreichischen Sparkassen 3,490 172 OMV 1,300 457 Raiffeisen International Bank Holding* 469 28 Telekom Austria (B) 6,769 127 -------- 784 -------- BELGIUM -- 0.7% Delhaize Group (B) 7,600 447 Fortis 3,052 83 KBC Groep (B) 12,600 1,026 UCB 2,243 103 -------- 1,659 -------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- BRAZIL -- 1.4% Braskem 58,100 $ 553 Cia Brasileira de Distribuicao Grupo Pao de Acucar ADR 12,200 265 Cia Vale do Rio Doce ADR 17,700 514 Gerdau ADR 8,850 89 Petroleo Brasileiro 6,400 270 Petroleo Brasileiro ADR 11,800 557 Tele Norte Leste Participacoes ADR 28,000 427 Uniao de Bancos Brasileiros GDR 16,010 574 -------- 3,249 -------- CANADA -- 2.8% Abitibi-Consolidated 20,800 92 Alcan 19,700 594 Bank of Nova Scotia 17,600 558 Cameco 4,800 198 Canadian Natural Resources 11,400 329 Inco 8,300 320 Manulife Financial 14,800 681 Methanex 4,000 73 Noranda 3,277 52 Potash Saskatchewan 5,000 450 Research In Motion* 11,750 973 Rogers Communications, Cl B 28,625 867 Teck Cominco, Cl B 22,710 739 TELUS 7,200 231 Thomson 5,300 179 Toronto-Dominion Bank 2,700 115 -------- 6,451 -------- CHILE -- 0.2% Empresa Nacional de Electricidad ADR 21,400 492 -------- CHINA -- 0.5% China Petroleum & Chemical 1,216,000 445 China Shipping Development 430,000 343 China Telecom 1,141,000 400 -------- 1,188 -------- COLOMBIA -- 0.0% BanColombia ADR 1,100 16 -------- CZECH REPUBLIC -- 0.1% Cesky Telecom GDR 10,500 195 -------- DENMARK -- 0.4% Danske Bank 12,700 366 Novo-Nordisk, Cl B 4,000 206 TDC 6,400 283 -------- 855 -------- - -------------------------------------------------------------------------------- 104 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- FINLAND -- 1.0% Fortum 44,400 $ 675 Nokia 71,910 1,211 Sampo 20,600 292 UPM-Kymmene 5,100 99 -------- 2,277 -------- FRANCE -- 10.4% Accor 6,575 304 Air Liquide 1,830 319 Assurances Generales de France (B) 24,650 1,984 AXA 58,135 1,422 BNP Paribas (B) 14,279 964 Bouygues (B) 45,428 1,754 Carrefour 2,401 120 Cie Generale D'Optique Essilor International 1,940 134 Compagnie Generale des Etablissements Michelin, Cl B 1,732 110 Credit Agricole (B) 17,830 464 Dassault Systemes (B) 18,248 849 France Telecom (B)* 8,800 253 Groupe Danone (B) 15,358 1,418 L'Oreal 2,705 197 Lafarge 1,201 110 Lagardere S.C.A. (B) 17,050 1,219 Publicis Groupe 19,100 562 Renault (B) 11,497 987 Sanofi-Aventis (B) 53,522 4,844 Schneider Electric 6,489 479 Societe Generale (B) 8,167 805 Thomson (B) 10,800 274 Total (B) 10,400 2,305 Vinci 14,415 1,083 Vivendi Universal 44,855 1,371 -------- 24,331 -------- GERMANY -- 5.6% Allianz 3,024 358 BASF 8,200 546 Bayer 6,499 219 Bayerische Hypo-und Vereinsbank* 55,604 1,375 Continental 11,500 818 DaimlerChrysler 17,118 689 Deutsche Bank 2,155 168 Deutsche Boerse 2,131 157 Deutsche Telekom 21,000 392 E.ON 12,940 1,124 Epcos* 7,500 97 HeidelbergCement 7,900 508 Hypo Real Estate Holding (B) 11,300 448 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Infineon Technologies* 59,515 $ 523 Lanxess* 5 -- MAN (B) 9,600 425 Merck KGaA 16,485 1,280 Muenchener Rueckversicherungs 5,200 571 SAP 8,495 1,405 Siemens* 20,964 1,536 Volkswagen 11,405 503 -------- 13,142 -------- HONG KONG -- 1.6% China Mobile 243,700 891 CNOOC 1,814,900 1,003 Esprit Holdings 10,000 72 Hang Lung Group 33,000 56 Hang Lung Properties 64,000 93 Hutchison Whampoa 109,200 951 Li & Fung 136,000 261 PCCW 64,000 39 Sun Hung Kai Properties 12,000 115 Swire Pacific, Cl A 13,500 115 Wing Hang Bank 16,500 118 Wing Lung Bank 13,700 104 -------- 3,818 -------- HUNGARY -- 0.2% Gedeon Richter 3,230 424 Mol Magyar Olaj- es Gazipari 1,400 105 -------- 529 -------- INDIA -- 1.0% GAIL India GDR 13,950 409 Hindalco Industries GDR 15,180 397 ICICI Bank ADR 22,920 445 Infosys Technologies ADR (B) 2,000 145 Ranbaxy Laboratories GDR 20,830 546 Reliance Industries GDR 16,600 417 -------- 2,359 -------- INDONESIA -- 0.2% Astra International 141,500 174 Telekomunikasi Indonesia 700,300 343 -------- 517 -------- IRELAND -- 0.6% Anglo Irish Bank 58,000 680 CRH 9,994 253 Depfa Bank 27,300 440 -------- 1,373 -------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 105 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS World Equity Ex-US Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- ISRAEL -- 0.2% Bank Hapoalim 109,400 $ 384 Bank Leumi Le-Israel 22,900 65 -------- 449 -------- ITALY -- 2.1% Banca Popolare di Milano (B) 64,475 655 Enel 59,200 534 ENI - Ente Nazionale Idrocarburi 82,936 2,126 Fiat* 17,770 102 Sanpaolo IMI (B) 73,200 1,018 Telecom Italia 141,000 454 -------- 4,889 -------- JAPAN -- 19.3% Advantest 3,200 243 Aeon 27,000 420 Aiful 4,250 315 Bridgestone 9,000 179 Canon 42,700 2,338 Chubu Electric Power 4,300 101 Circle K Sunkus 3,400 77 Daito Trust Construction 3,900 148 East Japan Railway 139 695 Fanuc 19,600 1,226 Fast Retailing 4,200 224 Furukawa Electric* 24,000 100 Hirose Electric 2,700 289 Hitachi 283,900 1,718 Honda Motor 15,500 768 Hoya 1,200 135 Ibiden 18,350 478 Isetan 18,500 240 Ito-Yokado 21,500 736 Itochu 47,900 234 Japan Airlines 38,000 110 Japan Tobacco 54 711 JFE Holdings 25,200 640 Kansai Electric Power 11,300 221 Kobe Steel 198,700 350 Komatsu 218,000 1,649 Kyocera 11,000 850 Leopalace21 18,800 289 Matsushita Electric Industrial 90,000 1,354 Millea Holdings 116 1,550 Mitsubishi 76,400 1,020 Mitsubishi Estate 57,000 620 Mitsubishi Tokyo Financial Group 42 353 Mitsui 12,000 109 Mitsui Chemicals 56,000 321 Mitsui OSK Lines 141,500 860 Mitsui Sumitomo Insurance 9,000 83 Mitsui Trust Holdings 113,200 1,121 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Mizuho Financial Group 49 $ 234 Murata Manufacturing 1,900 98 NEC 73,000 408 Nidec 1,300 144 Nikon 12,000 135 Nintendo 1,100 118 Nippon Electric Glass 11,000 172 Nippon Meat Packers 23,800 297 Nippon Mining Holdings 65,600 363 Nippon Telegraph & Telephone 88 363 Nissan Motor 201,400 1,994 Nitto Denko 3,100 176 Nomura Holdings 42,000 536 Oriental Land 5,900 353 ORIX 16,400 2,384 Promise 8,100 509 Rengo 21,000 110 Ricoh 11,000 181 Rohm 2,000 189 Sankyo 15,200 312 Sankyo Gunma 2,700 119 Sanyo Shinpan Finance 4,800 336 Sega Sammy Holdings 4,800 279 Sekisui House 19,000 188 Shimamura 1,400 109 Shionogi 5,000 69 SMC 2,700 289 Softbank 5,800 210 Sompo Japan Insurance 14,000 143 Sony 32,100 1,209 Square Enix 27,100 785 Sumitomo 37,000 299 Sumitomo Chemical 21,000 99 Sumitomo Forestry 6,000 53 Sumitomo Heavy Industries 78,000 389 Sumitomo Metal Industries 189,000 323 Sumitomo Mitsui Financial Group 441 2,885 Suzuki Motor 24,700 407 T&D Holdings 2,100 106 Takeda Pharmaceutical 15,300 742 TDK 2,000 147 Tohoku Electric Power 5,900 119 Tokyo Electric Power 21,400 505 Tokyo Electron 6,400 361 Tokyo Gas (B) 49,000 194 Toyota Motor 23,700 849 UFJ Holdings* 224 1,145 Uni-Charm 2,500 103 Yahoo! Japan 10 20 Yamada Denki 4,400 242 Yamanouchi Pharmaceutical 5,900 212 Yamato Transport 23,000 324 -------- 45,211 -------- - -------------------------------------------------------------------------------- 106 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- LUXEMBOURG -- 0.5% Arcelor 42,300 $ 845 SES GLOBAL FDR 28,963 401 -------- 1,246 -------- MALAYSIA -- 0.8% IOI 145,000 351 Malaysia International Shipping 99,800 457 Public Bank (Foreign Market) 187,600 331 Resorts World 150,200 381 Sime Darby 229,000 350 -------- 1,870 -------- MEXICO -- 1.7% Alfa 105,780 606 America Movil, Ser L ADR 28,450 1,612 Consorcio 114,500 371 Fomento Economico Mexicano ADR 13,110 718 Grupo Financiero Banorte 86,100 572 -------- 3,879 -------- NETHERLANDS -- 4.2% ABN AMRO Holding (B) 84,069 1,958 Aegon 19,113 245 Euronext 4,729 160 European Aeronautic Defense & Space 17,020 505 Heineken 14,374 457 Heineken Holding, Cl A 8,098 231 ING Groep 84,112 2,335 Koninklijke Ahold* 12,875 98 Koninklijke Philips Electronics 10,200 261 Reed Elsevier 1,857 26 Royal Dutch Petroleum 34,357 2,007 Royal Dutch Petroleum (New York Shares) 2,700 158 Royal KPN 46,882 373 Royal Numico* 3,255 130 TNT 27,100 694 VNU 10,050 274 -------- 9,912 -------- NORWAY -- 1.3% DNB 8,500 83 Norsk Hydro (B) 18,410 1,505 Norske Skogindustrier (B) 2,900 45 Statoil (B) 43,250 763 Tandberg 67,900 731 -------- 3,127 -------- - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- PHILIPPINES -- 0.1% Philippine Long Distance Telephone* 3,900 $ 106 SM Investments* 35,000 160 -------- 266 -------- PORTUGAL -- 0.2% Portugal Telecom 51,577 529 -------- RUSSIA -- 0.7% LUKOIL ADR 12,720 444 MMC Norilsk Nickel ADR 5,780 337 Mobile Telesystems ADR 10,200 358 Sberbank GDR* 5,230 344 Surgutneftegaz ADR 7,150 249 -------- 1,732 -------- SINGAPORE -- 0.7% Flextronics International* 38,300 489 Singapore Telecommunications 715,000 1,118 United Overseas Bank 13,000 112 -------- 1,719 -------- SOUTH AFRICA -- 1.3% ABSA Group 29,500 360 Anglo American Platinum 6,580 285 Barloworld 25,100 327 Sanlam 293,950 488 Sappi 28,400 276 Sasol 45,457 1,132 Telkom 5,930 98 -------- 2,966 -------- SOUTH KOREA -- 2.6% CJ 5,700 407 Daelim Industrial 6,220 299 Daewoo Shipbuilding & Marine Engineering 20,000 404 Hankook Tire 34,800 395 Honam Petrochemical 2,200 87 Hyundai Motor 6,100 343 Industrial Bank of Korea 10,680 95 Kookmin Bank 1,600 70 Kookmin Bank ADR 11,230 496 POSCO 1,100 196 Samsung Electronics 1,065 517 Samsung Electronics GDR 3,384 814 Samsung Fire & Marine Insurance 3,830 287 Shinhan Financial Group 45,810 1,172 Shinsegae 1,015 345 -------- 5,927 -------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 107 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS World Equity Ex-US Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- SPAIN -- 3.9% ACS Actividades 45,500 $ 1,214 Altadis 5,300 218 Banco Bilbao Vizcaya Argentaria 88,307 1,389 Banco Santander Central Hispano (B) 124,465 1,425 Endesa 29,600 646 Iberdrola 7,039 180 Inditex 9,365 266 Repsol 84,002 2,107 Telefonica (B) 82,197 1,381 Union Fenosa 9,700 293 -------- 9,119 -------- SWEDEN -- 1.6% Atlas Copco, Cl A* 16,600 205 Sandvik 2,800 111 Svenska Cellulosa, Cl B 14,700 502 Telefonaktiebolaget LM Ericsson ADR (B) 25,350 797 Telefonaktiebolaget LM Ericsson, Cl B 157,000 496 Volvo, Cl B (B) 38,900 1,592 -------- 3,703 -------- SWITZERLAND -- 6.1% Adecco 1,969 94 Compagnie Financiere Richemont, Cl A* 18,405 562 Credit Suisse Group (B) 31,159 1,251 Geberit 159 105 Holcim (B) 11,293 688 Micronas Semiconductor Holdings* 4,300 162 Nestle 7,012 1,850 Novartis 66,842 3,272 Roche Holding 13,074 1,653 Serono, Cl B 169 103 SGS 990 697 Swiss Reinsurance (B) 7,002 435 Swisscom 938 315 Syngenta* 1,127 117 Synthes 1,272 140 UBS 27,530 2,128 Xstrata* 40,132 721 -------- 14,293 -------- TAIWAN -- 1.7% Advanced Semiconductor Engineering 690,000 503 Compal Electronics 360,000 346 Eva Airways* 1,030,000 512 - -------------------------------------------------------------------------------- Market Value Description Shares ($ Thousands) - -------------------------------------------------------------------------------- Fubon Financial Holding 75,000 $ 71 Fubon Financial Holding GDR* 36,000 337 HON HAI Precision Industry 115,000 603 HON HAI Precision Industry GDR 13,307 140 Taiwan Semiconductor Manufacturing ADR 74,700 688 United Microelectronics* 690,000 466 Yuanta Core Pacific Securities 356,000 255 -------- 3,921 -------- THAILAND -- 0.4% Advanced Info Service 21,000 48 Advanced Info Service (Foreign Shares) 124,400 286 Land and Houses NVDR 1,417,000 262 PTT 20,200 98 Siam Cement 54,700 329 -------- 1,023 -------- TURKEY -- 0.5% Ford Otomotiv Sanayi 10,320 65 Haci Omer Sabanci Holding 100,000 345 Turkcell Iletisim Hizmet 50,000 262 Turkiye Is Bankasi 84,000 458 -------- 1,130 -------- UNITED KINGDOM -- 15.9% Anglo American 13,400 320 ARM Holdings 11,641 23 AstraZeneca 20,379 867 AstraZeneca (SEK) 10,350 442 Aviva 62,000 696 Barclays 188,300 1,790 BHP Billiton 111,573 1,350 BP 277,900 2,791 Bradford & Bingley 17,579 99 Brambles Industries 6,335 35 British Land 7,124 113 BT Group 171,900 668 Cadbury Schweppes 194,440 1,900 Carnival 12,450 682 Diageo 16,130 232 GlaxoSmithKline 100,325 2,487 GUS 75,215 1,160 Hanson 11,747 109 HBOS 93,982 1,371 HSBC Holdings 110,480 1,748 Intercontinental Hotels Group 32,300 375 - -------------------------------------------------------------------------------- 108 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- International Power 87,100 $ 307 J Sainsbury 74,900 390 Lloyds TSB Group 61,814 510 Mitchells & Butlers 60,500 356 National Grid Transco 53,100 520 Next 3,841 101 O2 514,700 1,196 Pearson 35,493 426 Persimmon 24,200 330 Punch Taverns 25,520 317 Reckitt Benckiser 34,078 1,043 Reed Elsevier 49,905 478 Rio Tinto 25,600 762 Rolls-Royce Group* 8,814 44 Royal & Sun Alliance Insurance Group 156,100 219 Royal Bank of Scotland Group 60,945 1,795 Scottish & Southern Energy 8,440 151 Scottish Power 78,950 667 Shell Transport & Trading 149,865 1,304 Signet Group 179,400 336 South African Breweries 14,700 226 Standard Chartered 20,807 378 Tate & Lyle 54,700 472 Trinity Mirror 17,700 201 Unilever 51,920 508 Vodafone Group 1,614,839 4,084 Whitbread 22,557 374 Wimpey George 53,700 416 -------- 37,169 -------- VENEZUELA -- 0.1% Cia Anonima Nacional Telefonos de Venezuela ADR 17,040 324 -------- Total Common Stock (Cost $229,457) ($ Thousands) 224,704 -------- CORPORATE OBLIGATIONS (C) (D) -- 4.9% FINANCIALS -- 4.9% ASIF Global Financing XV (F) 3.026%, 09/02/05 $ 37 37 Allstate Life Global Funding II, MTN (F) 3.080%, 06/15/06 181 181 American General Finance (F) 3.090%, 06/15/06 355 355 Bear Stearns EXL 3.100%, 06/15/06 702 702 CCN Bluegrass (F) 3.170%, 02/21/06 256 256 - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- CIT Group, MTN 3.260%, 05/12/06 $ 986 $ 986 3.199%, 07/29/05 45 45 3.163%, 04/19/06 99 99 Caterpillar Financial Services MTN, Ser F 3.250%, 07/11/05 197 197 Countrywide Home Loans MTN, Ser A 3.509%, 03/21/06 323 323 Countrywide Home Loans MTN, Ser M 3.389%, 08/26/05 118 118 3.152%, 06/23/05 241 241 3.040%, 11/30/05 450 450 2.810%, 01/31/06 87 87 Dekabank (F) 3.206%, 05/19/06 730 729 Five Finance MTN (F) 3.100%, 09/22/05 560 560 Harrier Finance Funding MTN (F) 3.034%, 09/15/05 114 114 Harrier Finance Funding MTN, Ser 1 (F) 3.016%, 06/15/05 343 343 Irish Life & Permanent MTN, Ser X (F) 3.101%, 06/22/06 367 367 Jackson National Life Funding (F) 3.064%, 05/01/06 867 867 K2 MTN (F) 2.995%, 12/12/05 24 24 Lakeside Funding 3.120%, 06/08/05 197 197 Liberty Lighthouse US Capital MTN (F) 3.118%, 05/10/06 394 394 Morgan Stanley EXL 3.089%, 05/04/06 138 138 Morgan Stanley EXL, Ser S 3.085%, 06/02/06 197 197 Nationwide Building Society (F) 3.090%, 01/06/06 394 394 3.083%, 10/28/05 197 197 Northern Rock (F) 3.099%, 02/03/06 406 406 Pacific Life Global Funding (F) 3.080%, 06/13/06 296 296 Premium Asset Trust, Ser 2004-01 (F) 3.100%, 04/14/06 552 552 Premium Asset Trust, Ser 2004-10 (F) 3.100%, 02/06/06 292 292 SLM EXL, Ser S (F) 3.090%, 06/20/06 789 789 SLM MTN, Ser X (F) 3.090%, 05/15/06 434 434 White Pine Finance MTN, Ser 1 (F) 3.071%, 11/01/05 174 173 -------- Total Corporate Obligations (Cost $11,540) ($ Thousands) 11,540 -------- - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 109 - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS World Equity Ex-US Fund (Continued) May 31, 2005 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- EXCHANGE TRADED FUND -- 5.6% CANADA -- 5.6% iUnits S&P/TSX 60 Index Fund 301,900 $ 13,033 -------- Total Exchange Traded Fund (Cost $13,205) ($ Thousands) 13,033 -------- ASSET-BACKED SECURITIES (C) (D) (F) -- 2.5% AUTOMOTIVE -- 0.4% Capital Auto Receivables Asset Trust, Ser 2005-SN1A, Cl A1 3.327%, 05/15/06 $ 954 954 Drivetime Auto Owner Trust 3.110%, 03/15/06 94 94 -------- 1,048 -------- MORTGAGE RELATED SECURITIES -- 2.1% Aire Valley Mortgages, Ser 2004-1A, Cl 1A 3.090%, 09/20/05 252 252 Blue Heron Funding, Ser 6A, Cl A1 3.129%, 06/21/05 79 79 Blue Heron Funding, Ser 9A, Cl A1 3.120%, 02/22/06 394 394 CCN Independence IV 3.160%, 10/17/05 217 217 3.160%, 01/17/06 138 138 Cheyne High Grade, Ser 2004-1A, Cl A1 3.250%, 11/10/05 227 227 Commodore, Ser 2003-2A, Cl A1MM 3.100%, 12/12/38 181 181 Duke Funding, Ser 2004-6B, Cl A1MM 2.680%, 04/10/06 296 296 Harwood Street Funding I, Ser 2004-1A, Cl NOTE 3.140%, 09/20/05 560 560 Harwood Street Funding II, Ser 2005-A1, Cl NOTE 3.141%, 06/25/06 394 394 Orchard Structured Finance CDO, Ser 2003-1A, Cl A1MM 3.370%, 11/18/05 385 385 Park Place Securities NIM Trust, Ser 2004-MM1, Cl AMM2 3.140%, 11/25/05 634 634 RMAC, Ser 2004-NS2A, Cl A1 3.080%, 06/13/05 70 70 RMAC, Ser 2004-NS3A, Cl A1 3.090%, 06/12/05 166 166 Saturn Ventures II 3.150%, 08/08/05 438 438 TIAA Real Estate, Ser 2003-1A, Cl A1 3.131%, 03/28/06 255 255 - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Whitehawk CDO Funding, Ser 2004-1A, Cl AMMA 3.030%, 09/15/05 $ 71 $ 71 Whitehawk CDO Funding, Ser 2004-1A, Cl AMMB 3.040%, 06/15/05 99 99 -------- 4,856 -------- Total Asset-Backed Securities (Cost $5,904) ($ Thousands) 5,904 -------- COMMERCIAL PAPER (E) -- 1.6% FINANCIALS -- 1.6% Ajax Bambino Funding (C) 3.119%, 07/06/05 394 393 Altimira Funding (C) 3.004%, 06/16/05 51 51 Beethoven Funding (C) 3.109%, 07/05/05 197 197 3.013%, 06/13/05 198 198 Brahms Funding (C) 3.000%, 06/02/05 509 509 Capital One Multi-Asset Funding (C) 3.025%, 06/20/05 158 157 3.002%, 06/07/05 138 138 Cobbler Funding (C) 3.057%, 06/28/05 72 72 Cre-8 Funding (C) 3.106%, 06/23/05 138 138 Golden Fish (C) 3.066%, 06/22/05 205 205 3.065%, 06/20/05 128 128 3.055%, 06/21/05 59 59 3.053%, 06/14/05 159 158 Rams Funding (C) 3.121%, 06/06/05 197 197 United Parcel 3.960%, 06/06/01 566 566 Wells Fargo 2.942%, 06/06/05 520 520 -------- Total Commercial Paper (Cost $3,686) ($ Thousands) 3,686 -------- CASH EQUIVALENT -- 1.0% SEI Daily Income Trust, Prime Obligations Fund, Cl A+ 2,299,157 2,299 -------- Total Cash Equivalent (Cost $2,299) ($ Thousands) 2,299 -------- - -------------------------------------------------------------------------------- 110 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Shares/Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- MASTER NOTES (C) -- 0.6% Bank of America Master Notes 3.143%, 06/01/05 986 986 Bear Stearns Master Notes 3.234%, 06/01/05 473 473 -------- Total Master Notes (Cost $1,459) ($ Thousands) 1,459 -------- TIME DEPOSITS -- 0.7% Brown Brothers Harriman 5.500%, 06/01/05 ZAR 45 $ 7 3.869%, 06/01/05 GBP 49 90 2.520%, 06/01/05 $1,477 1,477 1.600%, 06/01/05 CAD 142 113 1.500%, 06/01/05 HKD 51 6 1.250%, 06/01/05 DKK 48 8 -------- Total Time Deposits (Cost $1,701) ($ Thousands) 1,701 -------- CERTIFICATES OF DEPOSIT (C) (E) -- 0.4% FINANCIALS -- 0.4% U.S. Trust 3.215%, 09/14/05 $ 395 395 Washington Mutual Bank 3.270%, 08/18/05 465 465 -------- Total Certificates of Deposit (Cost $860) ($ Thousands) 860 -------- PREFERRED STOCK -- 0.3% BRAZIL -- 0.2% Cia Energetica de Minas Gerais 18,950,000 578 -------- SOUTH KOREA -- 0.1% Hyundai Motor 7,600 245 -------- Total Preferred Stock (Cost $696) ($ Thousands) 823 -------- U.S. TREASURY OBLIGATION -- 0.2% U.S. Treasury Bills (A) 2.945%, 08/25/05 500 497 -------- Total U.S. Treasury Obligation (Cost $497) ($ Thousands) 497 -------- FOREIGN CONVERTIBLE BONDS -- 0.0% Credit Suisse Group CV to 32.3311 Shares (CHF) 6.000%, 12/23/05 24 27 -------- Total Foreign Convertible Bonds (Cost $27) ($ Thousands) 27 -------- - -------------------------------------------------------------------------------- Face Amount Market Value Description ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- RIGHTS -- 0.0% Number of Rights -------- SWEDEN -- 0.0% Sandvik*, Expires 06/08/05 3 $ 2 -------- Total Rights (Cost $0) ($ Thousands) 2 -------- REPURCHASE AGREEMENTS (C) -- 1.7% Barclays Capital 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $620,595 (collateralized by U.S. Government Obligation, par value $645,874, 0.000%, 12/28/05; total market value $632,957) $ 621 621 Lehman Brothers 3.040%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $492,949 (collateralized by various U.S. Government Obligations, ranging in par value $5,974- $597,692, 0.000%-4.375%, 10/15/06-10/15/16; with total market value $502,783) 493 493 UBS Paine Webber 3.050%, dated 05/31/05, to be repurchased on 06/01/05, repurchase price $2,760,515 (collateralized by various U.S. Government Obligations, ranging in par value $115,202- $741,352, 0.000%-8.875%, 04/15/07-05/15/30; with total market value $2,815,496) 2,760 2,760 -------- Total Repurchase Agreements (Cost $3,874) ($ Thousands) 3,874 -------- Total Investments -- 115.4% (Cost $275,205) ($ Thousands) 270,409 -------- OTHER ASSETS AND LIABILITIES -- (15.4)% Payable upon Return on Securities Loaned (26,237) Payable for Investment Securities Purchased (19,768) Payable for Capital Shares Redeemed (454) Investment Advisory Fees Payable (97) Trustees' Fees Payable (1) Other Assets and Liabilities, Net 10,544 -------- Total Other Assets and Liabilities -- (15.4)% (36,013) -------- Net Assets -- 100.0% $234,396 ======== - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 111 <page> - -------------------------------------------------------------------------------- STATEMENT OF NET ASSETS World Equity Ex-US Fund (Concluded) May 31, 2005 - -------------------------------------------------------------------------------- Market Value Description ($ Thousands) - -------------------------------------------------------------------------------- NET ASSETS: Paid-in-Capital (unlimited authorization -- no par value) $238,598 Undistributed net investment income 1,493 Accumulated net realized loss on investments and futures contracts (911) Net unrealized depreciation on investments (4,796) Net unrealized appreciation on futures contracts 23 Net unrealized depreciation on foreign currencies and translation of other assets and liabilities denominated in foreign currencies (11) -------- Net Assets $234,396 ======== Net Asset Value, Offering and Redemption Price Per Share -- Class A ($234,396,279 / 23,904,966 shares) $9.81 ===== A summary of the open futures contracts held by the fund at May 31, 2005, is as follows: (see Note 2 in Notes to Financial Statements) - -------------------------------------------------------------------------------- CONTRACT UNREALIZED TYPE OF NUMBER OF VALUE EXPIRATION APPRECIATION CONTRACT CONTRACTS ($ THOUSANDS) DATE ($ THOUSANDS) - -------------------------------------------------------------------------------- DJ Euro Stoxx 6 $229 06/20/05 $15 FTSE 100 Index 1 90 06/20/05 3 Hang Seng Index 1 89 06/30/05 2 Topix Index 1 106 06/13/05 3 --- $23 --- - -------------------------------------------------------------------------------- Description - -------------------------------------------------------------------------------- * Non-Income Producing Security + See Note 3 in Notes to Financial Statements. (A) Security, or portion thereof, has been pledged as collateral on open futures contracts. The rate reported is the effective yield at time of purchase. (B) This security or a partial position of this security is on loan at May 31, 2005 (see Note 9) The total value of securities on loan at May 31, 2005 was $24,541 ($ Thousands). (C) This security was purchased with cash collateral held from securities lending. The total value of such securities as of May 31, 2005 was $26,237 ($ Thousands). (See Note 9) (D) Variable Rate Security -- The rate reported on the Statement of Net Assets is the rate in effect as of May 31, 2005. (E) The rate reported is the effective yield at time of purchase. (F) 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." ADR -- American Depositary Receipt CAD -- Canadian Dollar Cl -- Class CV -- Convertible DKK -- Danish Krone EXL -- Extendable Maturity FDR -- Fiduciary Depositary Receipt GBP -- Great Britain Pound GDR -- Global Depositary Receipt HKD -- Hong Kong Dollar MTN -- Medium Term Note NVDR -- Non-Voting Depositary Receipt SEK -- Swedish Krona Ser -- Series ZAR -- South African Rand The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 112 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Statements of Assets and Liabilities ($ Thousands) May 31, 2005 - ------------------------------------------------------------------------------------------------------------------------------ CORE FIXED LONG EXTENDED INCOME DURATION DURATION FUND FUND FUND - ------------------------------------------------------------------------------------------------------------------------------ ASSETS: Investments at value (Cost $5,444,007, $76,539 and $153,246, respectively) $5,497,511 $76,366 $153,688 Repurchase agreements (Cost $530,750, $0 and $0, respectively) 530,750 -- -- Cash -- 11 -- Foreign currency, at value (Cost $1, $0 and $0, respectively) 1 -- -- Receivable for investment securities sold 655,682 627 2,434 Receivable for capital shares sold 32,961 -- -- Unrealized gain on forward foreign currency contracts 523 -- -- Dividends and interest receivable 32,993 1,290 2,813 Unrealized gain on swap contracts -- 2,568 14,660 Other assets -- 10 22 - ------------------------------------------------------------------------------------------------------------------------------ Total Assets 6,750,421 80,872 173,617 - ------------------------------------------------------------------------------------------------------------------------------ LIABILITIES: Payable upon return on securities loaned 1,308,199 -- -- Payable for investment securities purchased 1,161,186 4,786 18,508 Income distribution payable 492 -- -- Bank overdraft 7,015 -- 275 Payable for capital shares redeemed 5,637 -- -- Options written, at fair value (premiums received $627, $0 and $0, respectively) 1,061 -- -- Payable for Swap Contracts 306 -- -- Payable for Margin Variation 685 9 -- Investment advisory fees payable 336 -- 16 Trustees' fees payable 13 -- -- Accrued expense payable 242 23 39 - ------------------------------------------------------------------------------------------------------------------------------ Total Liabilities 2,485,172 4,818 18,838 - ------------------------------------------------------------------------------------------------------------------------------ Net Assets $4,265,249 $76,054 $154,779 - ------------------------------------------------------------------------------------------------------------------------------ NET ASSETS: Paid in Capital (unlimited authorization -- no par value) $4,210,842 $72,782 $135,939 Undistributed net investment income 402 8 4 Accumulated net realized gain on investments, futures contracts, options, foreign currency contracts and swap contracts 2,116 869 3,734 Net unrealized appreciation (depreciation) on investments and options 53,070 (173) 442 Net unrealized depreciation on futures contracts (1,794) -- -- Net unrealized appreciation on foreign currency translations 919 -- -- Net unrealized appreciation (depreciation) on swap contracts (306) 2,568 14,660 - ------------------------------------------------------------------------------------------------------------------------------ Net Assets -- 100.0% $4,265,249 $76,054 $154,779 - ------------------------------------------------------------------------------------------------------------------------------ Net Asset Value, Offering and Redemption Price Per Share -- Class A ($4,265,249,459 / 412,577,434 shares), ($76,053,851 / 7,200,549 shares) and ($154,779,164 / 12,939,691 shares), respectively $10.34 $10.56 $11.96 ============================================================================================================================== Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 113 <page> - -------------------------------------------------------------------------------- Statements of Operations ($ Thousands) For the year ended May 31, 2005 - ----------------------------------------------------------------------------------------------------------------------------- LARGE CAP LARGE CAP EQUITY INDEX SMALL CAP FUND FUND FUND FUND - ----------------------------------------------------------------------------------------------------------------------------- INVESTMENT INCOME Dividends $ 33,033 $ 57,577 $ 6,043 $ 13,006 Dividends from Affiliated Registered Investment Company(2) 570 1,195 117 926 Interest 85 172 10 77 Security Lending Income -- Net 175 223 15 711 Less: Foreign Taxes Withheld (41) (5) (1) (34) - ----------------------------------------------------------------------------------------------------------------------------- Total Investment Income 33,822 59,162 6,184 14,686 - ----------------------------------------------------------------------------------------------------------------------------- EXPENSES: Investment Advisory Fees 6,983 11,790 518 9,468 Administration Fees 873 1,474 152 728 Trustee Fees 28 37 4 19 Shareholder Service Fees* 1 -- -- 1 Custodian/Wire Agent Fees 117 177 21 98 Professional Fees 67 82 9 44 Proxy Expenses 49 75 8 38 Printing Fees 20 40 4 19 Registration Fees 6 134 4 44 Litigation Fees (See Note 10) -- -- -- -- Other Expenses 21 34 8 19 - ----------------------------------------------------------------------------------------------------------------------------- Total Expenses 8,165 13,843 728 10,478 - ----------------------------------------------------------------------------------------------------------------------------- Less Waiver of: Investment Advisory Fees (2,696) (3,186) (174) (1,830) Administration Fees (873) (1,474) (152) (728) - ----------------------------------------------------------------------------------------------------------------------------- Net Expenses 4,596 9,183 402 7,920 - ----------------------------------------------------------------------------------------------------------------------------- NET INVESTMENT INCOME 29,226 49,979 5,782 6,766 ============================================================================================================================= NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net Realized Gain (Loss) on: Investments 41,774 52,654 (68) 50,397 Futures Contracts 2,714 3,434 549 5,094 Written Options -- -- -- -- Swap Contracts -- -- -- -- Foreign Currency Transactions -- -- -- (43) Net Change in Unrealized Appreciation (Depreciation) on: Investments 80,959 192,442 21,921 84,962 Futures Contracts 268 434 (72) (1,017) Written Options -- -- -- -- Swap Contracts -- -- -- -- Foreign Currency and Translation of Other Assets and Liabilities Denominated in Foreign Currencies -- -- -- -- - ----------------------------------------------------------------------------------------------------------------------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $154,941 $298,943 $28,112 $146,159 ============================================================================================================================= * Fees are incurred at the Class T level only. (1) The World Equity Ex-US Fund commenced operations on March 28, 2005. (2) See Note 2 in the Notes to the Financial Statements. Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 114 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------------------ CORE SMALL/MID CAP FIXED LONG EQUITY INCOME DURATION FUND FUND FUND - ------------------------------------------------------------------------------------------------------------------ INVESTMENT INCOME Dividends $ 5,647 $ 83 $ -- Dividends from Affiliated Registered Investment Company(2) 426 595 20 Interest 24 151,947 1,886 Security Lending Income -- Net 210 1,335 -- Less: Foreign Taxes Withheld (14) -- -- - ------------------------------------------------------------------------------------------------------------------ Total Investment Income 6,293 153,960 1,906 - ------------------------------------------------------------------------------------------------------------------ EXPENSES: Investment Advisory Fees 3,764 11,285 134 Administration Fees 290 1,881 22 Trustee Fees 7 50 1 Shareholder Service Fees* -- -- -- Custodian/Wire Agent Fees 33 235 4 Professional Fees 18 110 2 Proxy Expenses 14 92 1 Printing Fees 6 55 -- Registration Fees 34 140 8 Litigation Fees (See Note 10) -- 9 -- Other Expenses 10 239 11 - ------------------------------------------------------------------------------------------------------------------ Total Expenses 4,176 14,096 183 - ------------------------------------------------------------------------------------------------------------------ Less Waiver of: Investment Advisory Fees (319) (6,746) (70) Administration Fees (290) (1,881) (22) - ------------------------------------------------------------------------------------------------------------------ Net Expenses 3,567 5,469 91 - ------------------------------------------------------------------------------------------------------------------ NET INVESTMENT INCOME 2,726 148,491 1,815 ================================================================================================================== NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net Realized Gain (Loss) on: Investments 21,124 35,609 1,921 Futures Contracts 1,355 49 -- Written Options -- -- Swap Contracts -- 4,035 -- Foreign Currency Transactions (15) 90 -- Net Change in Unrealized Appreciation (Depreciation) on: Investments 46,273 55,805 (44) Futures Contracts (213) (1,170) -- Written Options -- (259) -- Swap Contracts -- (306) 2,568 Foreign Currency and Translation of Other Assets and Liabilities Denominated in Foreign Currencies -- 919 -- - ------------------------------------------------------------------------------------------------------------------ NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $71,250 $243,263 $6,260 ================================================================================================================== - ------------------------------------------------------------------------------------------------------------------ EXTENDED INTERNATIONAL WORLD EQUITY DURATION EQUITY EX-US FUND FUND FUND(1) - ------------------------------------------------------------------------------------------------------------------ INVESTMENT INCOME Dividends $ -- $ 44,821 $ 2,088 Dividends from Affiliated Registered Investment Company(2) 21 368 10 Interest 2,422 488 7 Security Lending Income -- Net -- 1,832 20 Less: Foreign Taxes Withheld -- (5,422) (276) - ------------------------------------------------------------------------------------------------------------------ Total Investment Income 2,443 42,087 1,849 - ------------------------------------------------------------------------------------------------------------------ EXPENSES: Investment Advisory Fees 175 8,340 206 Administration Fees 29 826 19 Trustee Fees 1 23 1 Shareholder Service Fees* -- -- -- Custodian/Wire Agent Fees 4 235 2 Professional Fees 2 49 3 Proxy Expenses 1 43 -- Printing Fees 1 24 -- Registration Fees 12 23 28 Litigation Fees (See Note 10) -- -- -- Other Expenses 12 41 2 - ------------------------------------------------------------------------------------------------------------------ Total Expenses 237 9,604 261 - ------------------------------------------------------------------------------------------------------------------ Less Waiver of: Investment Advisory Fees (91) (1,726) (18) Administration Fees (29) (826) (19) - ------------------------------------------------------------------------------------------------------------------ Net Expenses 117 7,052 224 - ------------------------------------------------------------------------------------------------------------------ NET INVESTMENT INCOME 2,326 35,035 1,625 ================================================================================================================== NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net Realized Gain (Loss) on: Investments 4,195 131,448 (1,095) Futures Contracts -- 744 184 Written Options -- -- -- Swap Contracts 1,911 -- -- Foreign Currency Transactions -- (1,086) (132) Net Change in Unrealized Appreciation (Depreciation) on: Investments 1,085 54,912 (4,796) Futures Contracts -- 717 23 Written Options -- -- -- Swap Contracts 15,209 -- -- Foreign Currency and Translation of Other Assets and Liabilities Denominated in Foreign Currencies -- (357) (11) - ------------------------------------------------------------------------------------------------------------------ NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $24,726 $221,413 $(4,202) ================================================================================================================== - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 115 <page> - -------------------------------------------------------------------------------- Statements of Changes in Net Assets ($ Thousands) For the years or period ended May 31, - ----------------------------------------------------------------------------------------------------------------------------- LARGE CAP DISCIPLINED LARGE CAP LARGE CAP FUND EQUITY FUND(2) INDEX FUND - ----------------------------------------------------------------------------------------------------------------------------- 2005 2004 2005 2004 2005 2004 - ----------------------------------------------------------------------------------------------------------------------------- OPERATIONS: Net Investment Income $ 29,226 $ 34,019 $ 49,979 $ 11,424 $ 5,782 $ 3,964 Net Realized Gain (Loss) from Investments, Written Options, Futures Contracts and Swap Contracts 44,488 380,926(5) 56,088 12,121 481 (223) Net Realized Gain (Loss) on Foreign Currency Transactions -- -- -- -- -- -- Net Change in Unrealized Appreciation (Depreciation) on Investments, Written Options, Futures Contracts and Swap Contracts 81,227 64,021 192,876 60,817 21,849 37,832 Net Change in Unrealized Appreciation on Foreign Currencies, and Translation of Other Assets and Liabilities Denominated in Foreign Currency -- -- -- -- -- -- - ----------------------------------------------------------------------------------------------------------------------------- Net Increase (Decrease) in Net Assets Resulting from Operations 154,941 478,966 298,943 84,362 28,112 41,573 - ----------------------------------------------------------------------------------------------------------------------------- DIVIDENDS AND DISTRIBUTIONS FROM: Net Investment Income: Class A (27,730) (37,006) (45,577) (6,738) (5,437) (3,562) Class T (5) (2) -- -- -- -- Net Realized Gains: Class A -- -- (23,335) (2,310) (576) (533) Class T -- -- -- -- -- -- - ----------------------------------------------------------------------------------------------------------------------------- Total Dividends and Distributions (27,735) (37,008) (68,912) (9,048) (6,013) (4,095) - ----------------------------------------------------------------------------------------------------------------------------- CAPITAL SHARE TRANSACTIONS:(1) CLASS A: Proceeds from Shares Issued 206,914 1,040,314(7) 1,336,678(7) 2,321,249(7) 66,334 228,588(7) Reinvestment of Dividends & Distributions 26,686 36,168 68,680 9,027 5,866 4,076 Cost of Shares Redeemed (396,899) (2,739,017)(8) (389,069) (120,549) (58,307) (128,043) - ----------------------------------------------------------------------------------------------------------------------------- Increase (Decrease) in Net Assets Derived from Class A Transactions (163,299) (1,662,535) 1,016,289 2,290,727 13,893 104,621 - ----------------------------------------------------------------------------------------------------------------------------- CLASS T: Proceeds from Shares Issued 1,475 1 -- -- -- -- Reinvestment of Dividends & Distributions 5 2 -- -- -- -- Cost of Shares Redeemed (1,483) (221) -- -- -- -- - ----------------------------------------------------------------------------------------------------------------------------- Decrease in Net Assets Derived from Class T Transactions (3) (218) -- -- -- -- - ----------------------------------------------------------------------------------------------------------------------------- Increase (Decrease) in Net Assets Derived from Capital Share Transactions (163,302) (1,662,753) 1,016,289 2,209,727 13,893 104,621 - ----------------------------------------------------------------------------------------------------------------------------- Net Increase (Decrease) in Net Assets (36,096) (1,220,795) 1,246,320 2,285,041 35,992 142,099 - ----------------------------------------------------------------------------------------------------------------------------- NET ASSETS: BEGINNING OF PERIOD 1,787,881 3,008,676 2,285,041 -- 284,711 142,612 - ----------------------------------------------------------------------------------------------------------------------------- END OF PERIOD $1,751,785 $ 1,787,881 $3,531,361 $2,285,041 $320,703 $ 284,711 ============================================================================================================================= Undistributed Net Investment Income Included in Net Assets at Period End $ 5,023 $ 3,532 $ 9,088 $ 4,686 $ 1,046 $ 701 ============================================================================================================================= (1) See Note 4 in the Notes to Financial Statements for additional information. (2) The Large Cap Disciplined Equity Fund commenced operations on August 28, 2003. (3) The Small/Mid Cap Equity Fund commenced operations on December 15, 2003. (4) The Long Duration Bond Fund commenced operations on April 21, 2004. (5) Includes realized gain of $48,900 due to in-kind redemption (see note 8). (6) Includes realized gain of $17,934 due to in-kind redemption (see note 8). (7) Includes subscriptions as a result of in-kind transfers of securities (see note 8). (8) Includes redemptions as a result of in-kind transfers of securities (see note 8). Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 116 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------------------------------------ LONG SMALL/MID CAP CORE FIXED DURATION SMALL CAP FUND EQUITY FUND(3) INCOME FUND FUND(4) - ------------------------------------------------------------------------------------------------------------------------------------ 2005 2004 2005 2004 2005 2004 2005 2004 - ------------------------------------------------------------------------------------------------------------------------------------ OPERATIONS: Net Investment Income $ 6,766 $ 5,983 $ 2,726 $ 662 $ 148,491 $ 102,842 $ 1,815 $ 33 Net Realized Gain (Loss) from Investments, Written Options, Futures Contracts and Swap Contracts 55,491 322,159(6) 22,479 2,209 39,693 41,186 1,921 (19) Net Realized Gain (Loss) on Foreign Currency Transactions (43) -- (15) -- 90 -- -- -- Net Change in Unrealized Appreciation (Depreciation) on Investments, Written Options, Futures Contracts and Swap Contracts 83,945 22,724 46,060 10,802 54,070 (104,786) 2,524 (129) Net Change in Unrealized Appreciation on Foreign Currencies, and Translation of Other Assets and Liabilities Denominated in Foreign Currency -- -- -- -- 919 -- -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Net Increase (Decrease) in Net Assets Resulting from Operations 146,159 350,866 71,250 13,673 243,263 39,242 6,260 (115) - ------------------------------------------------------------------------------------------------------------------------------------ DIVIDENDS AND DISTRIBUTIONS FROM: Net Investment Income: Class A (5,291) (6,425) (2,258) (319) (153,183) (107,988) (2,385) (33) Class T -- -- -- -- -- -- -- -- Net Realized Gains: Class A (179,060) (45,512) (6,068) -- (39,708) (38,012) (455) -- Class T (22) (8) -- -- -- -- -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Total Dividends and Distributions (184,373) (51,945) (8,326) (319) (192,891) (146,000) (2,840) (33) - ------------------------------------------------------------------------------------------------------------------------------------ CAPITAL SHARE TRANSACTIONS:(1) CLASS A: Proceeds from Shares Issued 327,341 394,135(7) 367,596(7) 438,036(7) 1,650,471 1,559,032 65,973 6,432 Reinvestment of Dividends & Distributions 176,915 49,709 8,299 318 189,150 143,168 2,840 33 Cost of Shares Redeemed (164,415) (627,395)(8) (93,690) (27,940) (699,617) (951,937) (2,496) -- - ------------------------------------------------------------------------------------------------------------------------------------ Increase (Decrease) in Net Assets Derived from Class A Transactions 339,841 (183,551) 282,205 410,414 1,140,004 750,263 66,317 6,465 - ------------------------------------------------------------------------------------------------------------------------------------ CLASS T: Proceeds from Shares Issued 529 -- -- -- -- -- -- -- Reinvestment of Dividends & Distributions 22 8 -- -- -- -- -- -- Cost of Shares Redeemed (656) (39) -- -- -- -- -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Decrease in Net Assets Derived from Class T Transactions (105) (31) -- -- -- -- -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Increase (Decrease) in Net Assets Derived from Capital Share Transactions 339,736 (183,582) 282,205 410,414 1,140,004 750,263 66,317 6,465 - ------------------------------------------------------------------------------------------------------------------------------------ Net Increase (Decrease) in Net Assets 301,522 115,339 345,129 423,768 1,190,376 643,505 69,737 6,317 - ------------------------------------------------------------------------------------------------------------------------------------ NET ASSETS: BEGINNING OF PERIOD 1,309,460 1,194,121 423,768 -- 3,074,873 2,431,368 6,317 -- - ------------------------------------------------------------------------------------------------------------------------------------ END OF PERIOD $1,610,982 $1,309,460 $768,897 $423,768 $4,265,249 $3,074,873 $76,054 $6,317 ==================================================================================================================================== Undistributed Net Investment Income Included in Net Assets at Period End $ 1,594 $ 162 $ 796 $ 343 $ 402 $ 554 $ 8 $ -- ==================================================================================================================================== - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 117 - -------------------------------------------------------------------------------- Statements of Changes in Net Assets ($ Thousands) For the years or period ended May 31, - ------------------------------------------------------------------------------------------------------------------------------ EXTENDED DURATION INTERNATIONAL WORLD EQUITY FUND(2) EQUITY FUND EX-US FUND(3) - ------------------------------------------------------------------------------------------------------------------------------ 2005 2004 2005 2004 2005 - ------------------------------------------------------------------------------------------------------------------------------ OPERATIONS: Net Investment Income $ 2,326 $ 151 $ 35,035 $ 25,849 $ 1,625 Net Realized Gain (Loss) from Investments, Written Options, Futures Contracts and Swap Contracts 6,106 (116) 132,192 120,683 (911) Net Realized Loss on Foreign Currency Transactions -- -- (1,086) -- (132) Net Change in Unrealized Appreciation (Depreciation) on Investments, Written Options, Futures Contracts and Swap Contracts 16,294 (1,192) 55,629 222,071 (4,773) Net Change in Unrealized Appreciation (Depreciation) on Foreign Currencies, and Translation of Other Assets and Liabilities Denominated in Foreign Currency -- -- (357) (76) (11) - ------------------------------------------------------------------------------------------------------------------------------ Net Increase (Decrease) in Net Assets Resulting from Operations 24,726 (1,157) 221,413 368,527 (4,202) - ------------------------------------------------------------------------------------------------------------------------------ DIVIDENDS FROM: Net Investment Income Class A (4,492) (237) (46,157) (23,331) -- - ------------------------------------------------------------------------------------------------------------------------------ Total Dividends (4,492) (237) (46,157) (23,331) -- - ------------------------------------------------------------------------------------------------------------------------------ CAPITAL SHARE TRANSACTIONS:(1) CLASS A: Proceeds from Shares Issued 108,470 28,944 469,667 413,693 246,730 Reinvestment of Dividends and Distributions 4,489 237 45,541 22,998 -- Cost of Shares Redeemed (6,201) -- (404,286) (566,908) (8,132) - ------------------------------------------------------------------------------------------------------------------------------ Increase (Decrease) in Net Assets Derived from Class A Transactions 106,758 29,181 110,922 (130,217) 238,598 - ------------------------------------------------------------------------------------------------------------------------------ Increase (Decrease) in Net Assets Derived from Capital Share Transactions 106,758 29,181 110,922 (130,217) 238,598 - ------------------------------------------------------------------------------------------------------------------------------ Net Increase in Net Assets 126,992 27,787 286,178 214,979 234,396 - ------------------------------------------------------------------------------------------------------------------------------ NET ASSETS: BEGINNING OF PERIOD 27,787 -- 1,391,076 1,176,097 -- - ------------------------------------------------------------------------------------------------------------------------------ END OF PERIOD $154,779 $27,787 $1,677,254 $1,391,076 $234,396 ============================================================================================================================== Undistributed Net Investment Income Included in Net Assets at Period End $ 4 $ 23 $ 14,517 $ 17,286 $ 1,493 ============================================================================================================================== (1) See Note 4 in the Notes to Financial Statements for additional information. (2) The Extended Duration Fund commenced operations on April 21, 2004. (3) The World Equity Ex-US Fund commenced operations on March 28, 2005. Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 118 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Financial Highlights For the periods ended May 31, For a share outstanding throughout each period - ------------------------------------------------------------------------------------------------------------------------------------ Net Realized and Distributions Net Asset Net Unrealized Dividends from Value, Investment Gains Total from Net Realized Dividends Net Asset Beginning Income (Losses) on from Investment Capital and Value, End Total of Period (Loss) Securities Operations Income Gains Distributions of Period Return+ - ------------------------------------------------------------------------------------------------------------------------------------ LARGE CAP FUND Class A 2005 $ 14.47 $0.25(6) $ 1.05(6) $ 1.30 $(0.24) $ -- $(0.24) $ 15.53 9.02% 2004 12.41 0.18(6) 2.09(6) 2.27 (0.21) -- (0.21) 14.47 18.37 2003 13.82 0.16(6) (1.41)(6) (1.25) (0.16) -- (0.16) 12.41 (8.98) 2002 16.31 0.15 (2.48) (2.33) (0.16) -- (0.16) 13.82 (14.36) 2001 19.48 0.17 (2.35) (2.18) (0.17) (0.82) (0.99) 16.31 (11.54) Class T 2005 $ 14.49 $0.14(6) $ 0.97(6) $ 1.11 $(0.08) $ -- $(0.08) $ 15.52 7.67% 2004 12.45 0.11(6) 2.06(6) 2.17 (0.13) -- (0.13) 14.49 17.51 2003(1) 11.43 0.04(6) 1.02(6) 1.06 (0.04) -- (0.04) 12.45 9.28 LARGE CAP DISCIPLINED EQUITY FUND Class A 2005 $111.81 $1.96(6) $ 9.40(6) $11.36 $(1.79) $(0.90) $(2.69) $120.48 10.26% 2004(2)++ 100.00 0.66(6) 12.51(6) 13.17 (0.54) (0.82) (1.36) 111.81 13.23 LARGE CAP INDEX FUND Class A 2005 $ 99.12 $1.93(6) $ 7.20(6) $ 9.13 $(1.82) $(0.19) $(2.01) $106.24 9.29% 2004++ 84.90 1.50(6) 14.28(6) 15.78 (1.37) (0.19) (1.56) 99.12 18.71 2003++ 93.40 1.10 (8.50)(7) (7.40) (1.10) -- (1.10) 84.90 (7.79) 2002(3)++ 100.00 0.20 (6.80) (6.60) -- -- -- 93.40 (6.60) SMALL CAP FUND Class A 2005 $ 14.70 $0.07(6) $ 1.38(6) $ 1.45 $(0.05) $(1.83) $(1.88) $ 14.27 9.81% 2004 11.60 0.06(6) 3.59(6) 3.65 (0.07) (0.48) (0.55) 14.70 31.76 2003 12.53 0.07(6) (0.94)(6) (0.87) (0.06) -- (0.06) 11.60 (6.83) 2002 13.02 0.06 (0.45) (0.39) (0.07) (0.03) (0.10) 12.53 (2.99) 2001 13.66 0.08 0.96 1.04 (0.09) (1.59) (1.68) 13.02 8.39 Class T 2005 $ 14.65 $ --(6) $ 1.36(6) $ 1.36 $(0.01) $(1.83) $(1.84) $ 14.17 9.14% 2004 11.57 (0.01)(6) 3.58(6) 3.57 (0.01) (0.48) (0.49) 14.65 31.07 2003(4) 10.47 0.01(6) 1.11(6) 1.12 (0.02) -- (0.02) 11.57 10.69 SMALL/MID CAP EQUITY FUND Class A 2005 $107.03 $0.53(6) $13.75(6) $14.28 $(0.47) $(1.22) $(1.69) $119.62 13.38% 2004(5) 100.00 0.22(6) 6.93(6) 7.15 (0.12) -- (0.12) 107.03 7.15 - ----------------------------------------------------------------------------------------------------------- Ratio of Ratio of Net Expenses Ratio of Net Investment to Average Net Assets Expenses Income(Loss) Net Assets Portfolio End of Period to Average to Average (Excluding Turnover ($ Thousands) Net Assets Net Assets Waivers) Rate+ - ----------------------------------------------------------------------------------------------------------- LARGE CAP FUND Class A 2005 $1,751,751 0.26% 1.67% 0.47% 43% 2004 1,787,850 0.26 1.34 0.48 109 2003 3,008,463 0.26 1.39 0.47 51 2002 2,938,135 0.26 1.03 0.47 65 2001 3,451,673 0.26 0.98 0.48 107 Class T 2005 $ 34 0.81% 0.97% 1.02% 43% 2004 31 0.81 0.76 1.03 109 2003(1) 213 0.81 0.66 1.02 51 LARGE CAP DISCIPLINED EQUITY FUND Class A 2005 $3,531,361 0.31% 1.69% 0.47% 71% 2004(2)++ 2,285,041 0.33 1.33 0.47 67 LARGE CAP INDEX FUND Class A 2005 $ 320,703 0.13% 1.89% 0.24% 8% 2004++ 284,711 0.16 1.58 0.24 6 2003++ 142,612 0.20 1.67 0.25 12 2002(3)++ 39,763 0.20 1.30 0.39 1 SMALL CAP FUND Class A 2005 $1,610,876 0.54% 0.46% 0.72% 94% 2004 1,309,254 0.54 0.45 0.72 135 2003 1,193,935 0.54 0.67 0.72 97 2002 1,102,199 0.54 0.54 0.71 115 2001 857,278 0.54 0.63 0.73 154 Class T 2005 $ 106 1.09% (0.03)% 1.27% 94% 2004 206 1.09 (0.10) 1.27 135 2003(4) 186 1.09 0.10 1.27 97 SMALL/MID CAP EQUITY FUND Class A 2005 $ 768,897 0.62% 0.47% 0.72% 98% 2004(5) 423,768 0.65 0.45 0.73 51 + Returns and portfolio turnover rates are for the period indicated and have not been annualized. Returns do not reflect the deduction of taxes the shareholder would pay on fund distributions or redemption of Fund shares. ++ Per share amounts have been adjusted for a 10 to 1 reverse stock split paid to shareholders of record on November 26, 2003. (1) Commenced operations on December 13, 2002. All ratios for the period have been annualized. (2) Commenced operations on August 28, 2003. All ratios for the period have been annualized. (3) Commenced operations on April 1, 2002. All ratios for the period have been annualized. (4) Commenced operations on November 26, 2002. All ratios for the period have been annualized. (5) Commenced operations on December 15, 2003. All ratios for the period have been annualized. (6) Per share net investment income and net realized and unrealized gains/ (losses) calculated using average shares. (7) The amount shown for the year ended May 31, 2003 for a share outstanding throughout the period does not accord with the aggregate net gains on investments for that period because of the sales and repurchase of Fund shares in relation to fluctuating market value of the investments of the Fund. Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 119 - -------------------------------------------------------------------------------- Financial Highlights For the periods ended May 31, For a share outstanding throughout each period - ------------------------------------------------------------------------------------------------------------------------------------ Net Realized and Distributions Net Asset Unrealized Dividends from Value, Net Gains Total from Net Realized Dividends Net Asset Beginning Investment (Losses) on from Investment Capital and Value, End Total of Period Income Securities Operations Income Gains Distributions of Period Return+ - ------------------------------------------------------------------------------------------------------------------------------------ CORE FIXED INCOME FUND Class A 2005 $10.19 $0.41(2) $ 0.27(2) $ 0.68 $(0.42) $(0.11) $(0.53) $10.34 6.77% 2004 10.61 0.38(2) (0.26)(2) 0.12 (0.40) (0.14) (0.54) 10.19 1.13 2003 10.27 0.50 0.60 1.10 (0.50) (0.26) (0.76) 10.61 11.10 2002 10.49 0.54 0.06 0.60 (0.54) (0.28) (0.82) 10.27 6.43 2001 9.82 0.66 0.67 1.33 (0.66) -- (0.66) 10.49 13.92 LONG DURATION FUND Class A 2005 $ 9.77 $0.42(2) $ 1.03(2) $ 1.45 $(0.54) $(0.12) $(0.66) $10.56 15.26% 2004(1) 10.00 0.05(2) (0.23)(2) (0.18) (0.05) -- (0.05) 9.77 (1.78) EXTENDED DURATION FUND Class A 2005 $ 9.53 $0.43(2) $ 2.84(2) $ 3.27 $(0.84)$ -- $(0.84) $11.96 35.74% 2004(1) 10.00 0.05(2) (0.44)(2) (0.39) (0.08) -- (0.08) 9.53 (3.88) INTERNATIONAL EQUITY FUND Class A 2005 $10.06 $0.23(2) $ 1.16(2) $ 1.39 $(0.30) $ -- $(0.30) $11.15 13.73% 2004 7.76 0.18(2) 2.28(2) 2.46 (0.16) -- (0.16) 10.06 31.73 2003 9.21 0.13 (1.46) (1.33) (0.12) -- (0.12) 7.76 (14.43) 2002 10.34 0.11 (1.14) (1.03) (0.10) -- (0.10) 9.21 (9.93) 2001 13.61 0.17 (2.56) (2.39) (0.16) (0.72) (0.88) 10.34 (18.21) WORLD EQUITY EX-US FUND Class A 2005(3) $10.00 $0.07(2) $(0.26)(2) $(0.19) $ -- $ -- $ -- $ 9.81 (1.90) - --------------------------------------------------------------------------------------------------------- Ratio of Ratio of Net Expenses Ratio of Net Investment to Average Net Assets Expenses Income Net Assets Portfolio End of Period to Average to Average (Excluding Turnover ($ Thousands) Net Assets Net Assets Waivers) Rate+ - --------------------------------------------------------------------------------------------------------- CORE FIXED INCOME FUND Class A 2005 $4,265,249 0.15% 3.94% 0.37% 615% 2004 3,074,873 0.19* 3.62 0.38 532 2003 2,431,368 0.18 4.79 0.37 436 2002 2,354,581 0.18 5.67 0.36 365 2001 2,131,474 0.18 6.47 0.37 399 LONG DURATION FUND Class A 2005 $ 76,054 0.20% 4.05% 0.41% 449% 2004(1) 6,317 0.20 5.02 0.57 31 EXTENDED DURATION FUND Class A 2005 $ 154,779 0.20% 3.99% 0.41% 379% 2004(1) 27,787 0.20 5.17 0.44 42 INTERNATIONAL EQUITY FUND Class A 2005 $1,677,254 0.43% 2.12% 0.58% 48% 2004 1,391,076 0.48 1.92 0.65 80 2003 1,176,097 0.48 1.85 0.68 58 2002 1,259,408 0.48 1.30 0.66 84 2001 1,190,830 0.48 1.68 0.67 71 WORLD EQUITY EX-US FUND Class A 2005(3) $ 234,396 0.60% 4.35% 0.70% 15% * The expense ratio includes the litigation fees paid. Had these fees been excluded the ratio would have been 0.18%. + Returns and portfolio turnover rates are for the period indicated and have not been annualized. Returns do not reflect the deduction of taxes the shareholder would pay on fund distributions or redemption of Fund shares. (1) Commenced operations on April 21, 2004. All ratios for the period have been annualized. (2) Per share net investment income and net realized and unrealized gains/(losses) calculated using average shares. (3) Commenced operations on March 28, 2005. All ratios have been annualized. Amounts designated as "--" are zero or have been rounded to zero. The accompanying notes are an integral part of the financial statements. - -------------------------------------------------------------------------------- 120 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS MAY 31, 2005 Notes to Financial Statements 1. ORGANIZATION SEI Institutional Investments Trust (the "Trust") was organized as a Massachusetts business trust under a Declaration of Trust dated March 1, 1995. The Trust commenced operations on June 14, 1996. The Trust is registered under the Investment Company Act of 1940, as amended, as an open-end investment company currently offering 10 Funds: The Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap, Small/Mid Cap Equity, Core Fixed Income, Long Duration Fund (previously Long Duration Bond Fund), Extended Duration Fund (previously Extended Duration Bond Fund), International Equity and World Equity Ex-US Funds (each a "Fund", collectively, the "Funds") are each diversified Funds. The Trust is registered to offer Class A shares of the Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap, Small/Mid Cap Equity, Core Fixed Income, Long Duration, Extended Duration, International Equity and World Equity Ex-US Funds, and Class T shares of Large Cap and Small Cap Funds. The assets of each Fund are aggregated, and a shareholder's interest is limited to the Fund in which shares are held. The Fund's prospectus provides a description of each Fund's investment objectives, policies, and strategies. 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 accounting principles generally accepted in the United States of America, requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets at the date of the financial statements and the reported results of 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 (foreign or domestic) 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. Debt securities are priced based upon valuations provided by independent, third-party pricing agents, if available. 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 acquired with remaining maturities of sixty days or less may be valued at their amortized cost, which approximates market value. The prices for foreign securities are reported in local currency and converted to U.S. dollars using currency exchange rates. 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. For securities that principally trade on a foreign market or exchange, a significant gap in time can exist between the time of a particular security's last trade and the time at which a Fund calculates its net asset value. The closing prices of such securities may no longer reflect their market value at the time the Fund calculates net asset value if an event that could materially affect the value of those securities (a "Significant Event") has occurred between the time of the security's last close and the time that the Fund calculates net asset value. A Significant Event may relate to a single issuer or to an entire market sector. If the adviser or sub-adviser of a Fund becomes aware of a Significant Event that has occurred with respect to a security or group of securities after the closing of the exchange or market on - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 121 <page> - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS (Continued) MAY 31, 2005 which the security or securities principally trade, but before the time at which the Fund calculates net asset value, it may request that a Fair Value Committee Meeting be called. In addition, the Funds' administrator monitors price movements among certain selected indices, securities and/or baskets of securities that may be an indicator that the closing prices received earlier from foreign exchanges or markets may not reflect market value at the time the Fund calculates net asset value. If price movements in a monitored index or security exceed levels established by the administrator, the administrator notifies the adviser or sub-adviser for any Fund holding the relevant securities that such limits have been exceeded. In such event, the adviser or sub-adviser makes the determination whether a Fair Value Committee Meeting should be called based on the information provided. The Funds that hold international securities also use a third-party fair valuation vendor. The vendor provides a fair value for foreign securities held by these Funds based on certain factors and methodologies (involving, generally, tracking valuation correlations between the U.S. market and each non-U.S. security). Values from the fair value vendor are applied in the event that there is a movement in the U.S. market that exceeds a specific threshold that has been established by the Committee. The Committee has also established a "confidence interval" which is used to determine the level of historical correlation between the value of a specific foreign security and movements in the U.S. market before a particular security will be fair valued when the threshold is exceeded. In the event that the threshold established by the Committee is exceeded on a specific day, the Funds that hold international securities will value the non-U.S. securities in their fund that exceed the applicable "confidence interval" based upon the adjusted prices provided by the fair valuation vendor. Options and warrants for which the primary market is a national securities exchange are valued at the last sale price on the exchange on which they are traded, or, in the absence of any sale, at the closing bid price. Options and warrants not traded on a national securities exchange are valued at the last quoted bid price. SECURITY TRANSACTIONS AND INVESTMENT INCOME -- Security transactions are recorded on the trade date. Cost used in determining net realized capital gains and losses on the sale of securities is determined on the basis of specific identification. Dividend income is recognized on the ex-dividend date, and interest income is recognized using the accrual basis of accounting. REPURCHASE AGREEMENTS -- Each Fund may agree to purchase securities from financial institutions subject to the seller's agreement to repurchase them at a mutually agreed upon date and price. It is the Fund's policy that repurchase agreements are fully collateralized by U.S. Treasury and Government Agency securities. All collateral is held by the Fund's custodian bank or a bank with which the custodian bank has entered into a subcustodian agreement, or is segregated in the Federal Reserve Book Entry System. In connection with transactions in repurchase agreements, if the seller defaults and the value of the collateral declines, or if the seller enters an insolvency proceeding, realization of the collateral by the Fund may be delayed or limited. COMPENSATING BALANCES -- Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap, Small/Mid Cap Equity, Core Fixed Income, Long Duration and Extended Duration Funds with cash overdrafts in excess of $100,000 are required to leave 112% in compensating balances with Wachovia Bank NA, the custodian of the Trust, on the following day. Funds with positive cash balances in excess of $100,000 are allowed to overdraw 90% of the balance with Wachovia Bank NA on the following day. DISCOUNT AND PREMIUM AMORTIZATION -- All amortization is calculated using the effective interest method over the holding period of the security. Amortization of premiums and discounts is included in interest income. EXPENSES -- Expenses that are directly related to one of the Funds are charged directly to that Fund. Other operating expenses of the Funds are prorated to the Funds on the basis of relative net assets. CLASSES -- Class-specific expenses are borne by that class of shares. Income, expenses, realized and unrealized gains/losses and non class-specific expenses are allocated to the respective classes on the basis of relative daily net assets. FOREIGN CURRENCY TRANSLATION -- The books and records of the Small Cap, Small/Mid Cap Equity, Core Fixed Income, International Equity and World Equity Ex-US Funds are maintained in U.S. dollars on the following basis: (I) market value of investment securities, assets and liabilities at the current rate of exchange; and (II) purchases and sales of investment securities, income and expenses at the relevant rates of exchange prevailing on the respective dates of such transactions. - -------------------------------------------------------------------------------- 122 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- The International Equity and World Equity Ex-US Funds do not isolate that portion of gains and losses on investments in equity securities that is due to changes in the foreign exchange rates from that which is due to changes in market prices of equity securities. The International Equity and World Equity Ex-US Funds report certain foreign-currency-related transactions as components of realized gains for financial reporting purposes, whereas such components are treated as ordinary income for Federal income tax purposes. FORWARD FOREIGN CURRENCY CONTRACTS -- The Small Cap, Small/Mid Cap Equity, Core Fixed Income, International Equity and World Equity Ex-US Funds may enter into forward foreign currency contracts as hedges against either specific transactions, fund positions or anticipated fund positions. All commitments are "marked-to-market" daily at the applicable foreign exchange rate, and any resulting unrealized gains or losses are recorded currently. The Small Cap, Small/Mid Cap, Core Fixed Income, International Equity and World Equity Ex-US Funds realize gains and losses at the time forward contracts are extinguished. Unrealized gains or losses on outstanding positions in forward foreign currency contracts held at the close of the period are recognized as ordinary income or loss for Federal income tax purposes. The Funds could be exposed to risk if the counterparties to the contracts are unable to meet the terms of the contract and from unanticipated movements in the value of a foreign currency relative to the U.S. dollar. At the year ended May 31, 2005 the Small Cap, Small/Mid Cap Equity, International Equity and World Equity Ex-US Funds did not have any forward foreign currency contracts outstanding. Finally, the risk exists that losses could exceed amounts disclosed on the Statement of Net Assets or Statement of Assets and Liabilities. FUTURES CONTRACTS -- Each of the Funds utilized futures contracts during the year ended May 31, 2005 with the exception of theLong and Extended Duration Funds. The Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap, Small/Mid Cap Equity, International Equity and World Equity Ex-US Funds' investment in index futures contracts is designed to enable the Funds to more closely approximate the performance of their benchmark indices. The Core Fixed Income Fund's use of futures contracts is primarily for tactical hedging purposes. 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. Variation margin payments are paid or received, depending upon whether unrealized losses or gains are incurred. When the contract is closed, the Funds record 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 of entering into futures contracts include the possibility that there will be an imperfect price correlation between the futures and the underlying securities. Second, it is possible that a lack of liquidity for futures contracts could exist in the secondary market, resulting in an inability to close a position prior to its maturity date. Third, the futures contract involves the risk that the fund could lose more than the original margin deposit required to initiate a futures transaction. Finally, the risk exists that losses could exceed amounts disclosed on the Statement of Net Assets or Statement of Assets and Liabilities. OPTION WRITING/PURCHASING -- The Core Fixed Income Fund invests in financial options contracts for the purpose of hedging its existing portfolio securities, or securities that the Fund intends to purchase, against fluctuations in fair market value caused by changes in prevailing market interest rates. The Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap, Long Duration, Extended Duration, International Equity and World Equity Ex-US Funds also may invest in financial options contracts. When a Fund writes or purchases an option, an amount equal to the premium received or paid by the Fund is recorded as a liability or an asset and is subsequently adjusted to the current market value of the option written or purchased. Premiums received or paid from writing or purchasing options which expire unexercised are treated by the Fund on the expiration date as realized gains or losses. The difference between the premium and the amount paid or received on effecting a closing purchase or sale transaction, including brokerage commissions, is also treated as a realized gain or loss. If an option is exercised, the premium paid or received is added to the cost of the purchase or proceeds from the sale in determining whether the Fund has realized a gain or a loss. The risk in writing a call option is that the Funds give up the opportunity for profit if the market price of the security increases. The risk in writing a put option is that the Funds may incur a loss if the market price of the security decreases and the option is exercised. The risk in purchasing an option is that the Funds pay a premium whether or not the option is exercised. The Funds also have the additional risk of being unable to enter into a closing transaction at an acceptable price if a liquid secondary market does not exist. Option contracts also involve the risk that they may not work as intended due to unanticipated developments in market conditions or other causes. Finally, the risk exists that losses could exceed amounts disclosed on the Statement of Net Assets or Statement of Assets and Liabilities. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 123 - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS (Continued) MAY 31, 2005 Written options transactions entered into during the year ended May 31, 2005 are summarized as follows: - -------------------------------------------------------------------------------- CORE FIXED INCOME FUND - -------------------------------------------------------------------------------- Premium Number of Contracts ($ Thousands) - -------------------------------------------------------------------------------- Balance at beginning of year 2,820 $ 3,263 Written 4,833 3,426 Expired (2,119) (1,881) Exercised -- -- Closing Buys (4,390) (4,181) - -------------------------------------------------------------------------------- Balance at end of year 1,144 $ 627 - -------------------------------------------------------------------------------- At May 31,2005 the Core Fixed Income Fund had cash and/or securities at least equal to value of written options. SWAP AGREEMENTS -- A swap agreement is a two-party contract under which an agreement is made to exchange returns from predetermined investments or instruments, including a particular interest rate, foreign currency, or "basket" of securities representing a particular index. Interest rate swaps involve the exchange by a Fund with another party of their respective commitments to pay or receive interest (e.g., an exchange of floating rate payments for fixed rate payments) with respect to a notional amount of principal. Credit-default swaps involve the periodic payment by the Fund or counterparty of interest based on a specified rate multiplied by a notional amount assigned to an underlying debt instrument or group of debt instruments in exchange for the assumption of credit risk on the same instruments. In the event of a credit event, usually in the form of a credit rating downgrade, the party receiving periodic payments (i.e. floating rate payer) must pay the other party (i.e. fixed rate payer) an amount equal to the outstanding principal of the downgraded debt instrument. In connection with swap agreements securities may be set aside as collateral by the Fund's custodian. A Fund may enter into swap agreements in order to, among other things, change the maturity or duration of the investment portfolio, to protect the Fund's value from changes in interest rates, or to expose a Fund to a different security or market. Swaps are marked-to-market daily based upon quotations from market makers and the resulting changes in market values, if any, are recorded as an unrealized gain or loss in the Statement of Operations. Net payments of interest are recorded as realized gains or losses. Entering into swap agreements involves, to varying degrees, elements of credit and market risk in excess of the amounts recognized on the Statement of Assets and Liabilities. Such risks involve the possibility that there will be no liquid market for these agreements, that the counterparty to the agreement may default on its obligation to perform and that there may be unfavorable changes in the fluctuation of interest rates. Risks also arise from potential losses from adverse market movements. FORWARD TREASURY COMMITMENTS -- The Funds may invest in commitments to purchase U.S. Treasury securities on an extended settlement basis. Such transactions involve the commitment to purchase a security with payment and delivery taking place in the future, sometimes a month or more after the transaction date. The Funds account for such transactions as purchases and sales and record an unrealized gain or loss each day equal to the difference between the cost of the purchase commitment and the current market value. Realized gains or losses are recorded upon closure or settlement of such commitments. No interest is earned prior to settlement of the transaction. These instruments are subject to market fluctuation due to changes in interest rates and the market value at the time of settlement could be higher or lower than the purchase price. The Funds may incur losses due to changes in the value of the underlying treasury securities from interest rate fluctuations or as a result of counterparty nonperformance DELAYED DELIVERY TRANSACTIONS -- The Core Fixed Income Fund may purchase or sell securities on a when-issued or delayed delivery basis. These transactions involve a commitment by the Fund to purchase or sell securities for a predetermined price or yield, with payment and delivery taking place beyond the customary settlement period. When purchasing a security on a delayed delivery basis, the Fund assumes the rights and risks of ownership of the security, including the risk of price and yield fluctuations, and takes such fluctuations into account when determining its net asset value. The Fund may dispose of or renegotiate a delayed delivery transaction after it is entered into, and may sell when-issued securities before they are delivered, which may result in a capital gain or loss. When the Fund has sold a security on a delayed delivery basis, the Fund does not participate in future gains and losses with respect to the security. ILLIQUID SECURITIES -- A security is considered illiquid if it cannot be sold or disposed of in the ordinary course of business within seven days or less for its approximate carrying value on the books of the Funds. Valuations of illiquid securities may differ significantly from the values that would have been used had an active market value for these securities existed. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions from net investment income are declared and paid to shareholders quarterly for the Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap and the Small/Mid Cap Equity Funds; declared daily and paid monthly for the Core Fixed Income, Long Duration and the Extended Duration Funds; and declared and paid at least annually for the International Equity and World Equity Ex-US Funds. Dividends and distributions are recorded on the ex-dividend date. - -------------------------------------------------------------------------------- 124 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- 3. AGREEMENTS AND OTHER TRANSACTIONS WITH AFFILIATES ADMINISTRATION AGREEMENT --The Trust and SEI Investments Fund Management (the "Administrator") are parties to an Amended and Restated Administration and Transfer Agency Agreement dated December 10, 2003 under which the Administrator provides administrative and shareholder servicing for an annual fee of 0.05% of the average daily net assets of each Fund. For the year ended May 31, 2005, and until further notice, the Administrator has voluntarily agreed to waive all of its fee. DISTRIBUTION AGREEMENT --The Trust and SEI Investments Distribution Co. (the "Distributor") are parties to an Amended and Restated Distribution Agreement dated September 16, 2002 pursuant to which the Distributor provides distribution-related services to the Trust. The Distributor is not currently entitled to any fee for performing these services. The Trust has also adopted a shareholder service plan and agreement (the "Service Plan") and an administrative services plan and agreement (the "Administrative Service Plan") for the Class T shares of the Funds. Under the Service Plan, the Distributor may perform, or may compensate other service providers for performing, the following shareholder services: (i) maintaining client accounts; (ii) arranging for bank wires; (iii) responding to client inquiries concerning services provided by the Distributor or any other service provider; (iv) assisting clients in changing dividend options, account designations and addresses; and (v) responding to client inquiries concerning their investments in Class T shares of the Funds. Under the Service Plan, the Distributor may retain as a profit any difference between the fee it receives and the amount it pays to third parties. Under the Service Plan, the Distributor is entitled to a fee, calculated daily and paid monthly as a percentage of average daily net assets attributable to Class T Shares, of up to 0.25% annually. Under the Administrative Service Plan, the Distributor may perform, or may compensate other service providers for performing, the following administrative services: (i) providing sub-accounting with respect to Class T shares beneficially owned by clients; (ii) providing information periodically to clients showing their positions in Class T shares; (iii) forwarding shareholder communications from the Trust; (iv) processing purchase, exchange and redemption requests from clients and placing such orders with the Fund or its service providers; (v) processing dividend payments; and (vi) providing such other similar services as the Funds may reasonably request, to the extent the service provider is permitted to do so under applicable laws or regulations. Under the Administrative Service Plan, the Distributor is entitled to a fee, calculated daily and paid monthly, as a percentage of average daily net assets attributable to Class T Shares, of up to 0.30% annually. INVESTMENT ADVISORY AGREEMENT -- SEI Investments Management Corporation ("SIMC") serves as investment adviser (the "Adviser") to each Fund. In connection with serving as investment adviser, SIMC is entitled to a fee that is calculated daily and paid monthly based on the average daily net assets of each Fund. SIMC has voluntarily agreed to waive a portion of its fee so that the total annual expenses of each Fund will not exceed certain voluntary expense limitations adopted by SIMC. These waivers may be terminated at any time. During the period expenses related to a proxy conducted by the Trust were charged to the Funds above the cap. Accordingly, the advisory fee and voluntary expense limitations for each Fund are as follows: - -------------------------------------------------------------------------------- Advisory Voluntary Expense Fees Limitations - -------------------------------------------------------------------------------- Large Cap Fund Class A 0.400% 0.260% Large Cap Fund Class T 0.400 0.810 Large Cap Disciplined Equity Fund Class A 0.400 0.300 Large Cap Index Fund Class A 0.170 0.120 Small Cap Fund Class A 0.650 0.540 Small Cap Fund Class T 0.650 1.090 Small/Mid Cap Equity Fund Class A 0.650 0.600 Core Fixed Income Fund Class A 0.300 0.140 Long Duration Fund Class A 0.300 0.200 Extended Duration Fund Class A 0.300 0.200 International Equity Fund Class A 0.505 0.400 World Equity Ex-US Fund 0.550 0.600 As of May 31, 2005, SIMC has entered into investment sub-advisory agreements with the following parties and pays the sub-advisers out of the fee that it receives from the Funds: - -------------------------------------------------------------------------------- Currently Managing Date of a Portion of Fund Investment Sub-Adviser Agreement (Y/N) - -------------------------------------------------------------------------------- LARGE CAP FUND Alliance Capital Management, L.P. 10/02/00 Y Aronson + Johnson + Ortiz, L.P. 07/01/03 Y Delaware Management Company 04/27/05 Y Franklin Portfolio Associates 07/01/03 Y Goldman Sachs Asset Management 01/24/03 Y LSV Asset Management 06/14/96 Y McKinley Capital Management, Inc. 06/26/02 Y Montag & Caldwell, Inc. 03/12/02 Y Peregrine Capital Management 12/07/00 Y LARGE CAP DISCIPLINED EQUITY FUND Analytic Investors, Inc. 07/01/03 Y Barclays Global Fund Advisors 07/16/03 Y Enhanced Investment Technologies, LLC (Intech) 08/28/03 Y Quantitative Management Associates LLC 07/01/03 Y LARGE CAP INDEX FUND Barclays Global Fund Advisors 03/19/02 Y - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 125 - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS (Continued) MAY 31, 2005 - -------------------------------------------------------------------------------- Currently Managing Date of a Portion of Fund Investment Sub-Adviser Agreement (Y/N) - -------------------------------------------------------------------------------- SMALL CAP FUND Artisan Partners Limited Partnership 03/26/99 Y BlackRock Advisors, Inc. 07/01/03 Y Lee Munder Investments Ltd. 12/09/02 Y David J. Greene and Company, LLC 08/14/01 Y Delaware Management Company 07/01/03 Y LSV Asset Management 03/28/97 Y McKinley Capital Management Inc. 09/20/00 Y Martingale Asset Management, L.P. 12/09/02 Y Mazama Capital Management, Inc. 12/13/99 Y Security Capital Research and Management Incorporated 05/14/02 Y Wellington Management Company, LLP 03/14/02 Y SMALL/MID CAP EQUITY FUND Artisan Partners Limited Partnership 11/05/03 N BlackRock Advisors, Inc. 07/01/03 Y Delaware Management Company 07/01/03 Y Integrity Asset Management, LLC 05/18/04 Y Lee Munder Investments, Ltd. 12/15/03 Y LSV Asset Management 12/15/03 Y Martingale Asset Management, L.P. 12/09/03 Y Mazama Capital Management, Inc. 07/01/03 Y Security Capital Research and Management Incorporated 07/01/03 Y Wellington Management Company, LLP 12/15/03 Y CORE FIXED INCOME FUND BlackRock Advisors, Inc. 06/14/96 Y Metropolitan West Asset Management LLC 06/26/02 Y Wells Capital Management, Inc. 09/30/03 Y Western Asset Management Company 06/14/96 Y LONG DURATION FUND Metropolitan West Asset Management LLC 03/31/04 Y EXTENDED DURATION FUND Metropolitan West Asset Management LLC 03/31/04 Y INTERNATIONAL EQUITY FUND Alliance Capital Management, L.P. 07/01/03 Y Capital Guardian Trust Company 06/29/98 Y Fisher Investments, Inc. 07/01/03 Y McKinley Capital Management Inc. 07/01/03 Y Morgan Stanley Investment Management Limited 12/10/03 Y WORLD EQUITY EX-US FUND Acadian Asset Management Inc. -- N Alliance Capital Management L.P. 03/28/05 Y Capital Guardian Trust Company 03/24/05 Y Fisher Investments, Inc. 03/25/05 Y McKinley Capital Management Inc. 03/25/05 Y Rexiter Capital Management Limited 03/25/05 Y OTHER --The Distribution Agreement between the Distributor and the Trust provides that the Distributor may receive compensation on fund transactions effected for the Trust in accordance with the SEC rules. Accordingly, it is expected that fund transactions may result in brokerage commissions being paid to the Distributor. The SEC rules require that such commissions not exceed usual and customary commissions. Such commissions for the year ended May 31, 2005 were as follows ($ Thousands): Large Cap Fund $295 Small Cap Fund 426 Small/Mid Cap Equity Fund 118 International Equity Fund 393 ------ $1,232 ====== Certain officers and/or trustees of the Trust are also officers of the Administrator or the Adviser. The Trust pays each unaffiliated Trustee an annual fee for attendance at quarterly, interim and committee meetings. Compensation of officers and affiliated Trustees of the Trust is paid by the Adviser or Administrator. LSV Asset Management (partially-owned subsidiary of SIMC) serves as a sub-adviser to the Large Cap, Small Cap and Small/Mid Cap Equity Funds. For this service LSV Asset Management is entitled to receive a fee from SIMC. Such fees for the year ended May 31, 2005 were as follows ($ Thousands): Large Cap Fund $289 Small Cap Fund 963 Small/Mid Cap Equity Fund 376 ------ $1,628 ====== 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 money market funds, provided that investments in the money market funds do not exceed 25% of the investing Fund's total assets. - -------------------------------------------------------------------------------- 126 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- 4. CAPITAL SHARE TRANSACTIONS Capital Share Transactions for the Funds were as follows (Thousands): - ------------------------------------------------------------------------------------------------------------------------------------ LARGE CAP DISCIPLINED LARGE CAP LARGE CAP FUND EQUITY FUND(3) INDEX FUND SMALL CAP FUND - ------------------------------------------------------------------------------------------------------------------------------------ 2005 2004 2005 2004 2005 2004 2005 2004 - ------------------------------------------------------------------------------------------------------------------------------------ Class A: Shares Issued 14,001 76,149(1) 11,634(1) 21,739(1) 656 14,425(1) 22,909 28,179(1) Shares Issued in Lieu of Dividends and Distributions 1,763 2,690 585 103 57 181 12,291 3,557 Shares Redeemed (26,594) (197,701)(2) (3,347) (1,404) (567) (3,082) (11,392) (45,613)(2) Effect of Reverse Stock Split -- -- -- -- -- (25,450) -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Total Class A Transactions (10,830) (118,862) 8,872 20,438 146 (13,926) 23,808 (13,877) - ------------------------------------------------------------------------------------------------------------------------------------ Class T: Shares Issued 103 -- -- -- -- -- 37 -- Shares Issued in Lieu of Dividends and Distributions -- -- -- -- -- -- 1 1 Shares Redeemed (103) (15) -- -- -- -- (45) (3) - ------------------------------------------------------------------------------------------------------------------------------------ Total Class T Transactions -- (15) -- -- -- -- (7) (2) - ------------------------------------------------------------------------------------------------------------------------------------ Net Increase (Decrease) in Capital Shares (10,830) (118,877) 8,872 20,438 146 (13,926) 23,801 (13,879) ==================================================================================================================================== - ------------------------------------------------------------------------------------------------------------------------------------ LONG EXTENDED SMALL/MID CAP CORE FIXED DURATION DURATION INTERNATIONAL WORLD EQUITY EQUITY FUND(4) INCOME FUND FUND(5) FUND(6) EQUITY FUND EX-US FUND(7) - ------------------------------------------------------------------------------------------------------------------------------------ 2005 2004 2005 2004 2005 2004 2005 2004 2005 2004 2005 - ------------------------------------------------------------------------------------------------------------------------------------ Class A: Shares Issued 3,211(1) 4,221(1) 160,321 150,267 6,523 643 10,177 2,891 44,764 45,477 24,722 Shares Issued in Lieu of Dividends and Distributions 71 3 18,299 13,849 276 4 408 25 3,984 2,393 -- Shares Redeemed (813) (265) (67,942) (91,277) (244) -- (561) -- (36,693) (61,144) (817) - ------------------------------------------------------------------------------------------------------------------------------------ Total Class A Transactions 2,469 3,959 110,678 72,839 6,555 647 10,024 2,916 12,055 (13,274) 23,905 - ------------------------------------------------------------------------------------------------------------------------------------ Net Increase (Decrease) in Capital Shares 2,469 3,959 110,678 72,839 6,555 647 10,024 2,916 12,055 (13,274) 23,905 ==================================================================================================================================== (1) Includes subscriptions as a result of in-kind transfers of securities (see note 8). (2) Includes redemptions as a result of in-kind transfers of securities (see note 8). (3) The Large Cap Disciplined Equity Fund commenced operations on August 28, 2003. (4) The Small/Mid Cap Equity Fund commenced operations on December 15, 2003. (5) The Long Duration Fund commenced operations on April 21, 2004. (6) The Extended Duration Fund commenced operations on April 21, 2004. (7) The World Equity Ex-US Fund commenced operations on March 28, 2005. Amounts designated as "--" are zero or have been rounded to zero. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 127 - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS (Continued) MAY 31, 2005 5. INVESTMENT TRANSACATIONS The cost of security purchases and proceeds from the sale and maturities of securities other than temporary cash investments, during the year ended May 31, 2005, was as follows: - -------------------------------------------------------------------------------- U.S. Gov't Other Total ($Thousands) ($Thousands) ($Thousands) - -------------------------------------------------------------------------------- LARGE CAP FUND Purchases -- $727,915 $727,915 Sales -- 852,898 852,898 LARGE CAP DISCIPLINED EQUITY FUND Purchases -- 3,044,699 3,044,699 Sales -- 2,054,400 2,054,400 LARGE CAP INDEX Purchases -- 40,841 40,841 Sales -- 23,722 23,722 SMALL CAP FUND Purchases -- 1,465,804 1,465,804 Sales -- 1,327,055 1,327,055 SMALL/MID CAP EQUITY FUND Purchases -- 830,671 830,671 Sales -- 550,341 550,341 CORE FIXED INCOME FUND Purchases 19,807,164 2,168,345 21,975,509 Sales and Maturities 19,441,230 1,429,711 20,870,941 LONG DURATION FUND Purchases 89,185 66,786 155,971 Sales and Maturities 87,013 35,239 122,252 EXTENDED DURATION FUND Purchases 89,581 124,510 214,091 Sales and Maturities 85,288 78,919 164,207 INTERNATIONAL EQUITY FUND Purchases -- 854,728 854,728 Sales and Maturities -- 769,210 769,210 WORLD EQUITY EX-US FUND Purchase -- 271,532 271,532 Sales -- 27,218 27,218 6. FEDERAL TAX INFORMATION It is each Fund's intention to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code and distribute all of its taxable income (including net capital gains). Accordingly, no provision for Federal income taxes is required. Dividends from net investment income and distributions from net relaized 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, primarily attributable to different treatment for gains and losses on paydowns of mortgage- and asset-backed securities for tax purposes, reclassification of long term capital gain distributions on Real Estate Investment Trust securities, and gains and losses on passive foreign investment companies and certain foreign currency related transactions, have been reclassified to/from the following accounts as of May 31, 2005: - -------------------------------------------------------------------------------- Undistributed Accumulated Net Investment Realized Income (Loss) Gain (Loss) ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Small Cap Fund $ (43) $ 43 Small/Mid Cap Equity Fund (15) 15 Core Fixed Income Fund 4,540 (4,540) Long Duration Fund 578 (578) Extended Duration Fund 2,147 (2,147) International Equity Fund 8,353 (8,353) World Equity Ex-US Fund (132) 132 The tax character of dividends and distributions paid during the last two years or periods were as follows: - -------------------------------------------------------------------------------- Ordinary Long-term Income Capital Gain Total ($ Thousands) ($ Thousands) ($ Thousands) - -------------------------------------------------------------------------------- Large Cap Fund 2005 $ 27,735 $ -- $ 27,735 2004 37,008 -- 37,008 Large Cap Disciplined Equity Fund 2005 66,724 2,188 68,912 2004 8,522 526 9,048 Large Cap Index Fund 2005 5,724 289 6,013 2004 4,083 12 4,095 Small Cap Fund 2005 90,513 93,860 184,373 2004 33,561 18,384 51,945 Small/Mid Cap Equity Fund 2005 8,285 41 8,326 2004 319 -- 319 Core Fixed Income Fund 2005 178,592 14,299 192,891 2004 143,425 2,575 146,000 Long Duration Fund 2005 2,840 -- 2,840 2004 33 -- 33 Extended Duration Fund 2005 4,492 -- 4,492 2004 237 -- 237 International Equity Fund 2005 46,157 -- 46,157 2004 23,331 -- 23,331 World Equity Ex-US Fund 2005 -- -- -- - -------------------------------------------------------------------------------- 128 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- As of May 31, 2005, the components of Distributable Earnings/(Accumulated Losses) were as follows: - ------------------------------------------------------------------------------------------------------------------------------------ Undistributed Undistributed Capital Post Unrealized Other Total Ordinary Long-Term Loss October Appreciation Temporary Distributable Earnings/ Income Capital Gain Carryforwards Losses (Depreciation) Differences (Accumulated Losses) ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) - ------------------------------------------------------------------------------------------------------------------------------------ Large Cap Fund $ 5,004 $ -- $(299,193) $ -- $ 70,865 $ -- $(223,324) Large Cap Disciplined Equity Fund 54,602 35,072 -- -- 215,671 -- 305,345 Large Cap Index Fund 1,447 827 -- -- 57,449 -- 59,723 Small Cap Fund 15,128 35,244 -- (43) 145,228 -- 195,557 Small/Mid Cap Equity Fund 19,976 6,797 -- -- 49,520 (15) 76,278 Core Fixed Income Fund 19,398 1,463 -- -- 50,321 (16,775) 54,407 Long Duration Fund 1,242 -- -- -- 2,390 (360) 3,272 Extended Duration Fund 4,661 -- -- -- 15,089 (910) 18,840 International Equity Fund 28,548 -- (113,890) -- 187,075 (1,391) 100,342 World Equity Ex-US Fund 1,934 -- -- (801) (5,335) -- (4,202) Post-October losses represent losses realized on investment transactions from November 1, 2004 through May 31, 2005 that, in accordance with Federal income tax regulations, the Funds defer and treat as having arisen in the following fiscal year. For Federal income tax purposes, capital loss carryforwards may be carried forward and applied against future capital gains as follows: - ----------------------------------------------------------------------------------------- Total Capital Loss Expires Expires Expires Expires Carryforwards 2013 2012 2011 2010 5/31/05 ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) - ----------------------------------------------------------------------------------------- Large Cap Fund $-- $ 299,193 $ -- $-- $299,193 International Equity Fund -- 93,799 20,091 -- 113,890 During the year ended May 31, 2005, the Large Cap, Long Duration, Extended Duration and International Equity Funds utilized $37,159,942, $16,328, $212,555 and $123,778,400 of capital loss carryforwards, respectively, to offset capital gains. For Federal income tax purposes, the cost of securities owned at May 31, 2005, and the net realized gains or losses on securities sold for the period were different from amounts reported for financial reporting purposes, primarily due to wash sales which cannot be used for Federal income tax purposes in the current year and have been deferred for use in future years. The Federal tax cost and aggregate gross unrealized appreciation and depreciation on investments, held by the Funds at May 31, 2005, were as follows: - ------------------------------------------------------------------------------------ Net Unrealized Federal Appreciated Depreciated Appreciation Tax Cost Securities Securities (Depreciation) ($ Thousands) ($ Thousands) ($ Thousands) ($ Thousands) - ------------------------------------------------------------------------------------ Large Cap Fund $1,834,947 $165,566 $ (94,701) $ 70,865 Large Cap Disciplined Equity Fund 3,653,464 312,806 (97,135) 215,671 Large Cap Index Fund 301,513 67,357 (9,908) 57,449 Small Cap Fund 1,911,619 248,525 (103,297) 145,228 Small/Mid Cap Equity Fund 941,174 81,182 (31,662) 49,520 Core Fixed Income Fund 5,978,213 77,144 (27,096) 50,048 Long Duration Fund 76,544 61,730 (61,908) (178) Extended Duration Fund 153,259 264,300 (263,871) 429 International Equity Fund 1,803,607 217,549 (30,184) 187,365 World Equity Ex-US Fund 275,753 3,307 (8,651) (5,344) 7. CONCENTRATION/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 estimated; however, based on experience, the risk of loss from such claims is considered remote. The market values of the Core Fixed Income, Long Duration and Extended Duration Funds' 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 by recognized rating agencies in the ratings of any fixed income security and in the ability of an issuer to make payments of interest and principal may also affect the value of these investments. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 129 - -------------------------------------------------------------------------------- NOTES TO FINANCIAL STATEMENTS (Concluded) MAY 31, 2005 The International Equity and World Equity Ex-US Funds invest in securities of foreign issuers in various countries. These investments may involve certain considerations and risks not typically associated with investments in the United States, as a result of, among other factors, the possibility of future political and economic developments and the level of governmental supervision and regulation of securities markets in the respective countries. 8. IN-KIND TRANSFERS OF SECURITIES During the year ended May 31, 2005, the Large Cap Disciplined Equity and Small/Mid Cap Funds issued shares of beneficial interest in exchange for securities. The securities were transferred at their current value on the date of transaction. - -------------------------------------------------------------------------------- Shares Issued Value - -------------------------------------------------------------------------------- Large Cap Disciplined Equity Fund 06/29/04 791,663 $ 89,822,081 07/13/04 1,239,955 137,721,803 09/23/04 72,121 7,980,872 01/28/05 82,621 9,679,842 05/31/05 127,802 15,398,904 Small/Mid Cap Fund 06/29/04 139,224 15,180,964 07/13/04 257,166 27,023,049 During the year ended May 31, 2004, the Large Cap, Large Cap Disciplined Equity, Large Cap Index, Small Cap and Small/Mid Cap Equity Funds issued (redeemed) shares of beneficial interest in exchange for portfolio assets. The securities were transferred at their current value on the date of transaction. - -------------------------------------------------------------------------------- Shares Issued (Redeemed) Value Gain (Loss) - -------------------------------------------------------------------------------- Large Cap Fund 07/31/03 2,994,469 $38,209,430 $ -- 08/19/03 (10,589,035) (136,386,776) 25,009,866 09/18/03 (10,513,539) (138,673,573) 23,890,363 Large Cap Disciplined Equity Fund 08/28/03 18,232,037 182,320,373 -- 09/30/03 7,252,991 72,529,909 -- 12/17/03 689,877 73,941,000 -- 04/21/04 164,825 18,500,000 -- Large Cap Index Fund 07/31/03 11,044,112 96,525,540 -- Small Cap Fund 09/26/03 (7,191,278) (92,767,488) 17,933,583 01/15/04 9,609,013 145,000,000 -- Small/Mid Cap Equity Fund 12/17/03 463,668 46,594,000 -- 9. SECURITIES LENDING Each Fund 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 331/3% 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 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, the Fund could experience a delay in recovering its securities and a possible loss of income or value if the borrower fails to return them. 10. LITIGATION The Core Fixed Income Fund has participated as a plaintiff bondholder, along with other institutional bondholders, in litigation against Duty Free International, British Airport Authority and other defendants relating to Notes issued by Duty Free International which are held by the Fund. British Airport Authority is the former parent company of Duty Free International. During 2003, the plaintiffs in that action reached a settlement with all defendants with the exception of British Airport Authority. Under that settlement, Duty Free International paid the plaintiffs $4,310,636 which is approximately 70% of the par value of the bonds. The settlement also contained provisions for the issuance of a $10 million Note by Duty Free International to the bondholders, subject to certain conditions. The Fund, along with other bondholders, has since entered into an agreement to sell the Note to Duty Free International. The litigation proceeded to jury trial against British Airport Authority in December, 2003, and the jury found against the plaintiffs on all counts. Plaintiffs are currently pursuing an appeal. The Core Fixed Income Fund is bearing its portion of the legal expenses associated with this litigation over and above the expense caps of the Fund. 11. OTHER On May 31, 2005, the number of shareholders below held the following percentage of the outstanding shares of the Funds. - -------------------------------------------------------------------------------- Number of % of Outstanding Shareholders Shares - -------------------------------------------------------------------------------- Large Cap Fund Class A 2 79.82% Large Cap Fund Class T 1 100.00 Large Cap Disciplined Equity Fund Class A 1 66.18 Large Cap Index Fund Class A 1 86.30 Small Cap Class A 3 51.37 Small Cap Class T 1 96.08 Small/Mid Cap Equity Fund Class A 2 71.34 Core Fixed Income Fund Class A 2 71.95 Long Duration Fund Class A 1 83.83 Extended Duration Fund Class A 2 100.00 International Equity Fund Class A 1 68.46 World Equity Ex-US Fund Class A 2 95.20 These shareholders are comprised of omnibus accounts, which are held on the behalf of several individual shareholders. - -------------------------------------------------------------------------------- 130 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- TRUSTEES AND OFFICERS OF THE TRUST (Unaudited) The following chart lists Trustees and Officers as of July 26, 2005. Set forth below are the names, dates of birth, position with the Trust, length of term of office, 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 TRUSTEE2 TRUSTEE - ------------------------------------------------------------------------------------------------------------------------------------ INTERESTED TRUSTEES - ------------------- Robert A. Nesher Chairman since 1982 Currently performs various 70 Trustee of The Advisors' Inner One Freedom of the services on behalf of SEI Circle Fund, The Advisors' Valley Drive, Board of Investments for which Mr. Inner Circle Fund II, Bishop Oaks, PA 19456 Trustees* Nesher is compensated. Street Funds, The MDL Fund; 58 yrs. old Director of 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. 70 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, The MDL 19103 counsel to the Trust, SEI Invest- Funds: Director of SEI 65 yrs. old ments, SIMC, the Administrator Investments since 1974. and theDistributor. Secretary Director of the Distributor of SEI Investments since 1978. since 2003. 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 70 Trustee of STI Classic Funds One Freedom and STI Classic Variable Trust. Valley Drive, Oaks, PA 19456 72 yrs. old - ------------------------------------------------------------------------------------------------------------------------------------ James M. Storey Trustee since 1995 Attorney, sole practitioner since 70 Trustee of The Advisors' Inner One Freedom 1994. Partner, Dechert Price Circle Fund, The Advisors' Valley Drive, & Rhoads, September 1987- Inner Circle Fund II,The MDL Oaks, PA 19456 December 1993. Funds, Massachusetts Health 74 yrs. old and Education Tax-Exempt Trust, and U.S. Charitable Gift Trust. - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 131 <page> - -------------------------------------------------------------------------------- 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 - ------------------------------------------------------------------------------------------------------------------------------------ TRUSTEES (CONTINUED) - -------- George J. Sullivan, Jr.Trustee since 1996 Self-Employed Consultant, Newfound 70 Trustee of The Advisors' Inner One Freedom Consultants Inc. since April 1997. Circle Fund, The Advisors' Valley Drive Inner Circle Fund II, The Oaks, PA 19456 MDL Funds, State Street 62 yrs. old Navigator Securities 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 70 Director, Sonoco, Inc.; One Freedom` Care Reform, Commonwealth of Director, Exelon Corporation; Valley Drive Pennsylvania since 2003. Founder and Trustee, Pennsylvania Real Oaks, PA 19456 Principal, Grecoventures Ltd. from Estate Investment Trust. 59 yrs. old 1999 to 2002. - ------------------------------------------------------------------------------------------------------------------------------------ Nina Lesavoy Trustee since 2003 Managing Partner, Cue Capital since 70 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 70 N/A One Freedom Officer, J. Paul Getty Trust, Valley Drive, Non-Profit Foundation for Visual Arts, Oaks, PA 19456 since December 2002. President, Harbor 57 yrs. old Capital Advisors and Harbor Mutual Funds, 2000-2002. Manager, Pension Asset Management, Ford Motor Company, 1997-1999. - ------------------------------------------------------------------------------------------------------------------------------------ OFFICERS - -------- Edward D. Loughlin President since 1982 Executive Vice President, Enterprise N/A N/A One Freedom & CEO Division of SEI Investments since Valley Drive, 1993. Director and President of SIMC Oaks, PA 19456 since 2004. Chief Executive Officer 54 yrs. old of the Administrator and Director of the Distributor since 2003. Executive Vice President of SIMC, 1999-2004. Executive Vice President of the Administrator, 1994-2003. - ------------------------------------------------------------------------------------------------------------------------------------ Peter (Pedro) A. Controller and since 2003 Director, Fund Accounting and N/A N/A Rodriguez Chief Administration, SEI Investments One Freedom Financial Global Funds Services since September Valley Drive, Officer 2002 (and 1997-2002); Vice President, Oaks, PA 19456 Fund Administration, BlackRock 43 yrs. old Financial Management (April 2002 to September 2002). - ------------------------------------------------------------------------------------------------------------------------------------ Timothy D. Barto Vice since 2002 General Counsel, Vice President and N/A N/A One Freedom President Secretary of SIMC and the Valley Drive and Administrator since 2004. Vice Oaks, PA 19456 Secretary President and Assistant Secretary of 37 yrs. old SEI Investments since 2001. Vice President of SIMC and the Administrator since 1999. Assistant Secretary of SIMC, the Administrator and the Distributor and Vice President of the Distributor, 1999-2003. - ------------------------------------------------------------------------------------------------------------------------------------ 132 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------------------------------------ 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) - -------------------- Sofia A. Rosala Vice since 2004 Vice President and Assistant N/A N/A One Freedom President Secretary of SIMC and the. Valley Drive and Administrator since 2005. Compliance Oaks, PA 19456 Assistant Officer of SEI Investments September. 31 yrs. old Secretary 2001-2004. Account and Product Consultant, SEI Private Trust Company, 1998-2001. - ------------------------------------------------------------------------------------------------------------------------------------ Philip T. Masterson Vice since 2004 Vice President and Assistant Secretary N/A N/A One Freedom President of SIMC since 2005. General Counsel, Valley Drive and Citco Mutual Fund Services, 2003-2004. Oaks, PA 19456 Assistant Vice President and Associate Counsel, 41 yrs. old Secretary OppenheimerFunds, 2001-2003. Vice President and Assistant Counsel, Oppenheimer Funds, 1997-2001. - ------------------------------------------------------------------------------------------------------------------------------------ James Ndiaye Vice since 2005 Vice President and Assistant Secretary N/A N/A One Freedom President of SIMC since 2005. Vice President, Valley Drive and Deutsche Asset Management (2003-2004). Oaks, PA 19456 Assistant Associate, Morgan, Lewis & Bockius LLP 36 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 N/A N/A One Freedom President of SIMC since 2005. Counsel, Caledonian Valley Drive and Bank & Trust's Mutual Funds Group Oaks, PA 19456 Assistant (2004). Counsel, Permal Asset 33 yrs. old Secretary Management (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 N/A N/A One Freedom President for SIMC since 1995. Managing Director Valley Drive of Money Market Investments for Oaks, PA 19456 SIMC since 2003. 42 yrs. old - ------------------------------------------------------------------------------------------------------------------------------------ Thomas D. Jones, III Chief since 2004 Chief Compliance Officer and Assistant N/A N/A One Freedom Compliance Secretary of SIMC since March Valley Drive Officer 2004. First Vice President, Merrill Oaks, PA 19456 Lynch Investment Managers 40 yrs. old (Americas) from 2003-2004. Director, Merrill Lynch Investment Managers (Americas), 2001-2002. Vice President, Merrill Lynch Investment Managers (Americas), 1998-2000. - ------------------------------------------------------------------------------------------------------------------------------------ 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 Investments since 2005. Compliance Oaks, PA 19456 Officer Analyst, TD Waterhouse (2004). Senior 27 yrs. old Compliance Analyst, UBS Financial Services (2002-2004). Knowledge Management Analyst, PriceWaterhouseCoopers Consulting (2000-2002). - ------------------------------------------------------------------------------------------------------------------------------------ 1EACH 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. 2THE FUND COMPLEX INCLUDES THE FOLLOWING TRUSTS: SEI ASSET ALLOCATION TRUST, SEI DAILY INCOME TRUST, SEI INDEX FUNDS, SEI INSTITUTIONAL INVESTMENTS TRUST, SEI INSTITUTIONAL INTERNATIONAL TRUST, SEI INSTITUTIONAL MANAGED TRUST, SEI LIQUID ASSET TRUST AND SEI TAX EXEMPT TRUST. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 133 - -------------------------------------------------------------------------------- SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Disclosure of Fund Expenses (Unaudited) All mutual funds have operating expenses. As a shareholder of a 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 fund's gross income and directly reduce your final investment return. These expenses are expressed as a percentage of the fund's average net assets; this percentage is known as the 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 on the next page illustrates your fund's costs in two ways: O 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 starting 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." O 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) 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 "Expense Paid During Period" column with those that appear in the same charts in the shareholder reports for other funds. NOTE: Because the return is set at 5% for comparison purposes -- NOT your fund's actual return -- the account values shown do not apply to your specific investment. - -------------------------------------------------------------------------------- 134 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Disclosure of Fund Expenses (Unaudited) (Concluded) BEGINNING ENDING EXPENSE ACCOUNT ACCOUNT ANNUALIZED PAID VALUE VALUE EXPENSE DURING 11/30/04 5/31/05 RATIOS PERIOD* - ----------------------------------------------------------------------- LARGE CAP FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,026.80 0.26% $1.31 Class T Shares 1,000.00 1,023.50 0.82 4.14 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,023.64 0.26% $1.31 Class T Shares 1,000.00 1,020.84 0.82 4.13 - ----------------------------------------------------------------------- LARGE CAP DISCIPLINED EQUITY FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,038.10 0.31% $1.58 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,023.39 0.31% $1.56 - ----------------------------------------------------------------------- LARGE CAP INDEX FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,032.40 0.13% $0.66 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,024.28 0.13% $0.66 - ----------------------------------------------------------------------- SMALL CAP FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $ 996.20 0.54% $2.69 Class T Shares 1,000.00 993.30 1.09 5.42 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,022.24 0.54% $2.72 Class T Shares 1,000.00 1,019.50 1.09 5.49 - ----------------------------------------------------------------------- SMALL/MID CAP EQUITY FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,018.30 0.61% $3.07 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,021.89 0.61% $3.07 - ----------------------------------------------------------------------- CORE FIXED INCOME FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,028.10 0.15% $0.76 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,024.18 0.15% $0.76 - ----------------------------------------------------------------------- LONG DURATION FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,069.40 0.20% $1.04 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,023.93 0.20% $1.01 - ----------------------------------------------------------------------- EXTENDED DURATION FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,188.20 0.20% $1.09 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,023.93 0.20% $1.01 - ----------------------------------------------------------------------- INTERNATIONAL EQUITY FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $1,017.00 0.43% $2.16 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,022.79 0.43% $2.17 - ----------------------------------------------------------------------- *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 one-half year period shown). BEGINNING ENDING EXPENSE ACCOUNT ACCOUNT ANNUALIZED PAID VALUE VALUE EXPENSE DURING 3/28/04(1) 5/31/05 RATIOS PERIOD* - ----------------------------------------------------------------------- WORLD EQUITY EX-US FUND - ----------------------------------------------------------------------- ACTUAL FUND RETURN Class A Shares $1,000.00 $ 980.00 0.60% $1.02 HYPOTHETICAL 5% RETURN Class A Shares $1,000.00 $1,077.73 0.60% $1.04 - ----------------------------------------------------------------------- (1) Date of inception. *Expenses are equal to the Fund's annualized expense ratio multiplied by the average account value over the period, multiplied by 64/365 (to reflect period since inception). - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 135 - -------------------------------------------------------------------------------- SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Board of Trustees Considerations in Approving the Advisory and Sub-Advisory Agreements (Unaudited) The SEI Institutional Investments Trust (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 SIMC may manage a 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, as well as the sub-adviser's regulatory compliance policies and procedures. 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 Agreement must be specifically approved by: (i) the vote of the Board or by a vote of the shareholders of the Fund; and (ii) the vote of a majority of the trustees who are not parties to the Investment Advisory Agreements or "interested persons" (as defined under the 1940 Act) of any party to the Investment Advisory Agreements (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 Board 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 the responsibilities referenced above, the Board called and held a meeting on March 9, 2005 to consider whether to renew the Advisory Agreement between the Trust and SIMC. In preparation for the meeting, the Board provided SIMC with a written request for information and received and reviewed extensive written materials in response to that request, including information as to the performance of the Funds versus benchmarks and peer universes, the levels of fees for various categories of services provided by SIMC and affiliates and the overall expense ratio of the Funds, comparisons of such fees and expenses with such fees and expenses incurred by other funds, the costs to SIMC and its affiliates of providing such services, including a profitability analysis, SIMC's compliance program, and various other matters. Prior to the meeting, the Independent Trustees met separately by telephone with independent legal counsel to review materials prepared by SIMC and, on the basis of that discussion, the Independent Trustees prepared a written request for additional information from SIMC. In connection with the meeting, the Board also received extensive data provided by third parties and a memorandum from legal counsel regarding the responsibilities of Board and the responsibilities of the Independent Trustees in connection with their consideration of whether to approve the Advisory Agreement. In addition, the Independent Trustees met with independent legal counsel in executive session without the presence of management and participated in question and answer sessions with representatives of SIMC. In addition, the Board called and held a meeting on December 9, 2004 to consider whether to renew the Sub-Advisory - -------------------------------------------------------------------------------- 136 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Agreements between SIMC and the sub-advisers listed in the table below on behalf of the respective Funds and called and held a meeting on April 27, 2005 for the purpose of considering whether to approve a Sub-Advisory Agreement between SIMC and Delaware Management Company, a series of Delaware Management Business, on behalf of the Large Cap Fund. LARGE CAP FUND LARGE CAP DISCIPLINED EQUITY FUND Alliance Capital Management, L.P. Analytic Investors, Inc. Aronson+Johnson+Ortiz, LP Barclays Global Fund Advisors Franklin Portfolio Associates, LLC Enhanced Investment Technologies, LLC LSV Asset Management Quantitative Management Associates LLC LARGE CAP INDEX FUND SMALL CAP FUND Barclays Global Fund Advisors LSV Asset Management INTERNATIONAL EQUITY FUND SMALL/MID CAP EQUITY FUND Capital Guardian Trust Company LSV Asset Management Fisher Investments, Inc. McKinley Capital Management, Inc. Morgan Stanley Investment Management Inc. Morgan Stanley Investment Management Limited The Board prepared written requests for information from each respective sub-adviser and received written materials in response to such requests from each of the above-referenced sub-advisers. During the Board meetings, the Independent Trustees met in executive session to discuss the materials and also met with representatives of selected sub-advisers, including Barclays Global Fund Advisors and Delaware Management Company. At the request of the Board, the other sub-advisers did not make in-person presentations, but rather submitted extensive written materials for consideration by the Board and the Independent Trustees. The information provided in connection with the Board meetings was in addition to the detailed information about the Funds that the Board reviews during the course of each year, including information that relates to the Funds' operations and the Funds' performance. As noted above, the Board requested and received written materials from SIMC and each sub-adviser. Specifically, this requested information and written response included: (a) the quality of SIMC's and sub-advisers' investment management and other services; (b) SIMC's and sub-advisers' investment management personnel; (c) SIMC's and sub-advisers' operations and financial condition; (d) SIMC's and sub-advisers' brokerage practices (including any soft dollar arrangements) and investment strategies; (e) the level of the advisory fees that SIMC and each sub-adviser charges a Fund compared with the fees each charges 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 sub-advisers' compliance systems; (i) SIMC's and sub-advisers' policies on and compliance procedures for personal securities transactions; (j) SIMC's and sub-advisers' reputation, expertise and resources in domestic and/or international financial markets; and (k) each Fund's performance compared with similar mutual funds. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 137 - -------------------------------------------------------------------------------- SEI INSTITUTIONAL INVESTMENTS TRUST -- MAY 31, 2005 Board of Trustees Considerations in Approving the Advisory and Sub-Advisory Agreements (Unaudited)(Concluded) At the conclusion of the Board's deliberations, the Board and the Independent Trustees unanimously 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 approval was based on the Independent Trustees' and the Board's consideration and evaluation of a variety of specific factors discussed at the Board 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; 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; 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 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 Independent Trustees evaluated, among other things, SIMC's and the sub-advisers' personnel, experience, and track record. The Independent Trustees also considered SIMC's and each sub-adviser's compliance policies and procedures, as well as administrative services (where applicable). Following this 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 Advisory Agreement and the Sub-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 Independent Trustees considered both market risk and shareholder risk expectations for each 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 fees payable under the Investment Advisory Agreements, as well as each Fund's overall operating expenses, the Independent Trustees considered the rate of compensation under each of the Investment Advisory Agreements and each Fund's net operating expense ratio in comparison to those of other comparable mutual funds. The Independent Trustees also considered information about average expense ratios of comparable mutual funds in each Fund's - -------------------------------------------------------------------------------- 138 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- respective peer group. Finally, the Independent Trustees considered the effects of SIMC's voluntary agreement to waive its management fees and, if required, bear certain other expenses of the Fund in order to prevent total Fund operating expenses from exceeding a specified level. In addition, the Independent Trustees also considered that SIMC and the sub-advisers have maintained the Funds' net operating expenses at competitive levels within their respective distribution channels. Following evaluation by the Independent Trustees, 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 Independent Trustees considered all forms and levels of compensation received by SIMC and the sub-advisers, including their respective affiliates, as a result of their role as an investment adviser for the Funds, irrespective of whether SIMC or the sub-adviser received such compensation directly or indirectly. The Independent Trustees also considered whether the various 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 any of their affiliates. 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 Independent Trustees considered the existence of any economies of scale for a Fund and, if so, whether SIMC passed such savings to the 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 Independent Trustees' deliberation and their evaluation of the information described above, the Board and the Independent Trustees each unanimously approved the continuation of the Investment Advisory Agreements and concluded that the compensation under each of the Investment Advisory Agreements is fair and reasonable in light of such services and expenses and such other matters as the Independent Trustees and the Board considered to be relevant in the exercise of their reasonable judgment. In the course of their deliberations, the Independent Trustees considered all of the factors above and did not identify any one particular factor or specific piece of information that determined whether to approve or renew the Investment Advisory Agreements. It is anticipated that the Board and the Independent Trustees will consider the approval or renewal of other Sub-Advisory Agreements at one or more meetings to be held in the future. - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 139 - -------------------------------------------------------------------------------- Notice to Shareholders (Unaudited) For shareholders who do not have a May 31, 2005, taxable year end, this notice is for informational purposes only. For shareholders with a May 31, 2005, taxable year end, please consult your tax adviser as to the pertinence of this notice. For the fiscal year ended May 31, 2005, the Funds of the SEI Institutional Investments Trust are designating long term and qualifying dividend income with regard to distributions paid during the year as follows: (A) (B) LONG TERM ORDINARY CAPITAL GAINS INCOME TOTAL DISTRIBUTIONS DISTRIBUTIONS DISTRIBUTIONS (TAX BASIS) (TAX BASIS) (TAX BASIS) - ------------------------------------------------------------------------------------------------------------------------- Large Cap Fund 0% 100% 100% Large Cap Disciplined Equity Fund 3% 97% 100% Large Cap Index Fund 5% 95% 100% Small Cap Fund 51% 49% 100% Small/Mid Cap Equity Fund 0% 100% 100% Core Fixed Income Fund 8% 92% 100% Long Duration Fund 0% 100% 100% Extended Duration Fund 0% 100% 100% International Equity Fund (3) 0% 100% 100% World Equity Ex-US Fund (4) 0% 0% 0% (C) DIVIDENDS (D) QUALIFYING QUALIFYING FOR CORPORATE DIVIDEND INCOME (E) DIVIDENDS REC. (15% TAX RATE U.S. GOVERNMENT DEDUCTION (1) FOR QDI) (2) INTEREST - -------------------------------------------------------------------------------------------------------------------------- Large Cap Fund 100% 100% 0% Large Cap Disciplined Equity Fund 51% 62% 0% Large Cap Index Fund 87% 89% 0% Small Cap Fund 10% 10% 0% Small/Mid Cap Equity Fund 20% 18% 0% Core Fixed Income Fund 0% 0% 21% Long Duration Fund 0% 0% 10% Extended Duration Fund 0% 0% 4% International Equity Fund (3) 26% 50% 0% World Equity Ex-US Fund (4) 0% 0% 0% (1) Qualifying dividends represent dividends which qualify for the corporate dividends received deduction. (2) 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." It is the intention of each of the aforementioned funds to designate the maximum amount permitted by the law. The information reported herein may differ from the information and distributions taxable to the shareholders for the calendar year ending December 31, 2005. Complete information will be computed and reported in conjunction with your 2005 Form 1099-DIV. (3) The fund intends to pass through a foreign tax credit to shareholders. For fiscal year ended 2005, the total amount of foreign source income is $39,742,800. The total amount of foreign tax to be paid is $4,113,592. Your allocable share of the foreign tax credit will be reported on Form 1099 DIV. (4) The fund intends to pass through a foreign tax credit to shareholders. For fiscal year ended 2005, the total amount of foreign source income is $6,055,502. The total amount of foreign tax to be paid is $246,153. Your allocable share of the foreign tax credit will be reported on Form 1099 DIV. 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 distributions of each fund. Item (E) is based on the percentage of gross income of each fund. Please consult your tax adviser for proper treatment of this information. This notification should be kept with your permanent tax records. - -------------------------------------------------------------------------------- 140 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- Shareholder Voting Results (Unaudited) At a special meeting held on October 27, 2004, the shareholders of the SEI Institutional Investments Trust voted on the proposals listed below. The results of the voting were as follows: PROPOSAL 1: To elect Trustees of the Trust % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ Rosemarie B. Greco Affirmative 482,445,113.044 67.685% 100.000% Withhold .000 .000% .000% TOTAL 482,445,113.044 67.685% 100.000% Nina Lesavoy Affirmative 482,445,113.044 67.685% 100.000% Withhold .000 .000% .000% TOTAL 482,445,113.044 67.685% 100.000% James M. Williams Affirmative 482,445,113.044 67.685% 100.000% Withhold .000 .000% .000% TOTAL 482,445,113.044 67.685% 100.000% PROPOSAL 2: To approve eliminating or reclassifying certain fundamental policies and restrictions for all Funds. % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ---------- ------------ ------------ LARGE CAP FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% 2(g) Fundamental Policy Regarding Investments in Oil and Gas Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% 2(h) Fundamental Policy Making all Investment Limitations in Prospectus Fundamental Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 141 <page> - -------------------------------------------------------------------------------- Shareholder Voting Results (Unaudited) (Continued) % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(i) Fundamental Policy Requiring That At Least 65% of a Fund's Assets be Invested in Particular Types of Securities Affirmative 76,848,098.151 65.253% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 76,848,098.151 65.253% 100.000% LARGE CAP DISCIPLINED EQUITY FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 15,613,199.304 67.608% 98.230% Against 281,268.000 1.218% 1.770% Abstain .000 .000% .000% TOTAL 15,894,467.304 68.826% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 15,414,471.304 66.747% 96.980% Against 479,996.000 2.079% 3.020% Abstain .000 .000% .000% TOTAL 15,894,467.304 68.826% 100.000% 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 15,414,471.304 66.747% 96.980% Against 479,996.000 2.079% 3.020% Abstain .000 .000% .000% TOTAL 15,894,467.304 68.826% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 15,414,471.304 66.747% 96.980% Against 479,996.000 2.079% 3.020% Abstain .000 .000% .000% TOTAL 15,894,467.304 68.826% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 15,414,471.304 66.747% 96.980% Against 479,996.000 2.079% 3.020% Abstain .000 .000% .000% TOTAL 15,894,467.304 68.826% 100.000% % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 15,414,471.304 66.747% 96.980% Against 479,996.000 2.079% 3.020% Abstain .000 .000% .000% TOTAL 15,894,467.304 68.826% 100.000% LARGE CAP INDEX FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 2,464,113.000 85.715% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 2,464,113.000 85.715% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 2,464,113.000 85.715% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 2,464,113.000 85.715% 100.000% 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 2,464,113.000 85.715% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 2,464,113.000 85.715% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 2,464,113.000 85.715% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 2,464,113.000 85.715% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 2,464,113.000 85.715% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 2,464,113.000 85.715% 100.000% - -------------------------------------------------------------------------------- 142 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 2,464,113.000 85.715% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 2,464,113.000 85.715% 100.000% SMALL CAP FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 60,672,753.882 68.903% 92.913% Against 4,628,174.457 5.256% 7.087% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(g) Fundamental Policy Regarding Investments in Oil and Gas Affirmative 60,672,753.882 68.903% 92.913% Against 4,628,174.457 5.256% 7.087% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(h) Fundamental Policy Making all Investment Limitations in Prospectus Fundamental Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% 2(i) Fundamental Policy Requiring That At Least 65% of a Fund's Assets be Invested in Particular Types of Securities Affirmative 60,674,126.882 68.905% 92.915% Against 4,626,801.457 5.254% 7.085% Abstain .000 .000% .000% TOTAL 65,300,928.339 74.159% 100.000% SMALL/MID CAP EQUITY FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 2,970,367.656 66.765% 98.351% Against 49,792.000 1.119% 1.649% Abstain .000 .000% .000% TOTAL 3,020,159.656 67.884% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 2,916,000.656 65.543% 96.551% Against 104,159.000 2.341% 3.449% Abstain .000 .000% .000% TOTAL 3,020,159.656 67.884% 100.000% - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 143 <page> - -------------------------------------------------------------------------------- Shareholder Voting Results (Unaudited) (Continued) % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 2,916,000.656 65.543% 96.551% Against 104,159.000 2.341% 3.449% Abstain .000 .000% .000% TOTAL 3,020,159.656 67.884% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 2,916,000.656 65.543% 96.551% Against 104,159.000 2.341% 3.449% Abstain .000 .000% .000% TOTAL 3,020,159.656 67.884% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 2,916,000.656 65.543% 96.551% Against 104,159.000 2.341% 3.449% Abstain .000 .000% .000% TOTAL 3,020,159.656 67.884% 100.000% 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 2,916,000.656 65.543% 96.551% Against 104,159.000 2.341% 3.449% Abstain .000 .000% .000% TOTAL 3,020,159.656 67.884% 100.000% CORE FIXED INCOME FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 218,283,962.078 67.358% 95.540% Against 10,190,388.524 3.144% 4.460% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 218,266,419.078 67.352% 95.532% Against 10,207,931.524 3.150% 4.468% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 218,266,419.078 67.352% 95.532% Against 10,207,931.524 3.150% 4.468% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 218,266,419.078 67.352% 95.532% Against 10,207,931.524 3.150% 4.468% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 218,266,419.078 67.352% 95.532% Against 10,207,931.524 3.150% 4.468% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 218,283,962.078 67.358% 95.540% Against 10,190,388.524 3.144% 4.460% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% 2(g) Fundamental Policy Regarding Investments in Oil and Gas Affirmative 218,266,419.078 67.352% 95.532% Against 10,207,931.524 3.150% 4.468% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% 2(h) Fundamental Policy Making all Investment Limitations in Prospectus Fundamental Affirmative 218,266,419.078 67.352% 95.532% Against 10,207,931.524 3.150% 4.468% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% - -------------------------------------------------------------------------------- 144 SEI Institutional Investments Trust / Annual Report / May 31, 2005 - -------------------------------------------------------------------------------- % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(i) Fundamental Policy Requiring That At Least 65% of a Fund's Assets be Invested in Particular Types of Securities Affirmative 222,171,563.361 68.557% 97.241% Against 6,302,787.241 1.945% 2.759% Abstain .000 .000% .000% TOTAL 228,474,350.602 70.502% 100.000% LONG DURATION FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 3,284,167.000 99.907% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 3,284,167.000 99.907% 100.000% 2(b) Fundamental Policy Regarding Concentration (FAILED) Affirmative 652,929.000 19.863% 19.881% Against 2,631,238.000 80.044% 80.119% Abstain .000 .000% .000% TOTAL 3,284,167.000 99.907% 100.000% 2(c) Fundamental Policies Regarding Borrowing and Senior Securities (FAILED) Affirmative 652,929.000 19.863% 19.881% Against 2,631,238.000 80.044% 80.119% Abstain .000 .000% .000% 2(d) Fundamental Policy Regarding Lending (FAILED) Affirmative 652,929.000 19.863% 19.881% Against 2,631,238.000 80.044% 80.119% Abstain .000 .000% .000% TOTAL 3,284,167.000 99.907% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities (FAILED) Affirmative 652,929.000 19.863% 19.881% Against 2,631,238.000 80.044% 80.119% Abstain .000 .000% .000% TOTAL 3,284,167.000 99.907% 100.000% % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 3,284,167.000 99.907% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 3,284,167.000 99.907% 100.000% EXTENDED DURATION FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 3,345,163.000 99.324% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 3,345,163.000 99.324% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 2,957,265.000 87.806% 88.404% Against 387,898.000 11.518% 11.596% Abstain .000 .000% .000% TOTAL 3,345,163.000 99.324% 100.000% 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 2,957,265.000 87.806% 88.404% Against 387,898.000 11.518% 11.596% Abstain .000 .000% .000% TOTAL 3,345,163.000 99.324% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 2,957,265.000 87.806% 88.404% Against 387,898.000 11.518% 11.596% Abstain .000 .000% .000% TOTAL 3,345,163.000 99.324% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 2,957,265.000 87.806% 88.404% Against 387,898.000 11.518% 11.596% Abstain .000 .000% .000% TOTAL 3,345,163.000 99.324% 100.000% - -------------------------------------------------------------------------------- SEI Institutional Investments Trust / Annual Report / May 31, 2005 145 - -------------------------------------------------------------------------------- Shareholder Voting Results (Unaudited) (Concluded) % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 3,345,163.000 99.324% 100.000% Against .000 .000% .000% Abstain .000 .000% .000% TOTAL 3,345,163.000 99.324% 100.000% INTERNATIONAL EQUITY FUND 2(a) Fundamental Policy Regarding Diversification Affirmative 105,828,058.504 72.577% 89.547% Against 5,598,451.507 3.840% 4.737% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(b) Fundamental Policy Regarding Concentration Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(c) Fundamental Policies Regarding Borrowing and Senior Securities Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(d) Fundamental Policy Regarding Lending Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% % OF NUMBER OF OUTSTANDING % OF SHARES SHARES SHARES PRESENT ------------ ------------ ------------ 2(f) Fundamental Policy Regarding Underwriting of Securities Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(g) Fundamental Policy Regarding Investments in Oil and Gas Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(h) Fundamental Policy Making all Investment Limitations in Prospectus Fundamental Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% 2(i) Fundamental Policy Requiring That At Least 65% of a Fund's Assets be Invested in Particular Types of Securities Affirmative 104,959,255.504 71.981% 88.812% Against 6,467,254.507 4.436% 5.472% Abstain 6,754,901.000 4.632% 5.716% TOTAL 118,181,411.011 81.049% 100.000% - -------------------------------------------------------------------------------- 146 SEI Institutional Investments Trust / Annual Report / May 31, 2005 <page> - -------------------------------------------------------------------------------- Notes <page> - -------------------------------------------------------------------------------- Notes <page> - -------------------------------------------------------------------------------- SEI INSTITUTIONAL INVESTMENTS TRUST ANNUAL REPORT MAY 31, 2005 Robert A. Nesher, CHAIRMAN TRUSTEES William M. Doran F. Wendell Gooch Rosemarie B. Greco Nina Lesavoy James M. Storey George J. Sullivan, Jr. James M. Williams OFFICERS Edward D. Loughlin PRESIDENT AND CHIEF EXECUTIVE OFFICER Peter (Pedro) A. Rodriguez CONTROLLER AND CHIEF FINANCIAL OFFICER Timothy D. Barto VICE PRESIDENT, SECRETARY John J. McCue VICE PRESIDENT 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 Nicole Welch ANTI-MONEY LAUNDERING COMPLIANCE OFFICER Thomas D. Jones, III CHIEF COMPLIANCE OFFICER INVESTMENT ADVISER SEI Investments Management Corporation ADMINISTRATOR SEI Investments Fund Management DISTRIBUTOR SEI Investments Distribution Co. LEGAL COUNSEL Morgan, Lewis & Bockius LLP INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM PricewaterhouseCoopers 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 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) [BACKGROUND GRAPHIC OMITTED] SEI INVESTMENTS SEI Investments Distribution Co. Oaks, PA 19456 1 800-DIAL-SEI (1 800 342 5734) SEI-F-140 (5/05) 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 at least 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. For each of the last two fiscal years, the aggregate fees for which PricewaterhouseCoopers LLP (PwC) billed the Trust for services as follows: - ------------------ ----------------------------------------------------- ----------------------------------------------------- 2005 2004 - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- 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 did not require were did not require pre-approved pre-approval pre-approved pre-approval - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (a) Audit $184,890 N/A N/A $133,400 N/A N/A Fees(1) - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (b) Audit- Related $0 $173,085(1) N/A $2,400 $130,217(2) N/A Fees - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (c) Tax Fees N/A N/A N/A N/A N/A N/A - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- (d) All N/A N/A N/A N/A N/A N/A Other Fees - ------- ---------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- Notes: (1) Includes fees for examination of the design of SEI's Anti Money Laundering Program framework, 404 Readiness Assistance for SEI and agreed upon procedures related to the requirement to perform an independent audit pursuant to Section 352 of the USA PATRIOT Act for SEI Funds I. (2) Includes fees for services relating to state tax consequences of proposed SIMC restructuring. (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: ---------------------------- ----------------- ---------------- 2005 2004 ---------------------------- ----------------- ---------------- Audit-Related Fees 0% 0% ---------------------------- ----------------- ---------------- Tax Fees 0% 0% ---------------------------- ----------------- ---------------- All Other Fees 0% 0% ---------------------------- ----------------- ---------------- (f) Not applicable. (g) The aggregate non-audit fees and services billed by PwC for the last two fiscal years were $0 and $0 for 2005 and 2004, respectively. (h) Not Applicable. 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 18th 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, the certifying officers have concluded that 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 Institutional Investments Trust By (Signature and Title)* /s/ Edward Loughlin -------------------------- Edward D. Loughlin President & CEO Date: July 27, 2005 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/ Edward Loughlin -------------------------- Edward D. Loughlin President & CEO Date: July 27, 2005 By (Signature and Title)* /s/ Peter Rodriguez ------------------------ Peter (Pedro) A. Rodriguez Controller & CFO Date: July 27, 2005 * Print the name and title of each signing officer under his or her signature.