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

                                  SCHEDULE 14A

                  Proxy Statement Pursuant to Section 14(a) of
            the Securities Exchange Act of 1934

    Filed by the Registrant /X/
    Filed by a Party other than the Registrant / /

    Check the appropriate box:
    /X/  Preliminary Proxy Statement
    / /  CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE
         14a-6(e)(2))
    / /  Definitive Proxy Statement
    / /  Definitive Additional Materials
    / /  Soliciting Material Pursuant to Section 240.14a-12
                       

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.     )

Filed by the Registrant  x

Filed by a Party other than the Registranto

Check the appropriate box:

o

Preliminary Proxy Statement

o

Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

x

Definitive Proxy Statement

o

Definitive Additional Materials

o

Soliciting Material Pursuant to §240.14a-12

SEI INSTITUTIONAL INVESTMENTS TRUST

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

x

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o

Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

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Aggregate number of securities to which transaction applies:

(3)

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Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

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Date Filed:



SEI INSTITUTIONAL INVESTMENTS TRUST - -------------------------------------------------------------------------------- (Name

One Freedom Valley Drive
Oaks, PA 19456

September 30, 2010

Dear Shareholder:

Enclosed are a Notice of Registrant as Specified In Its Charter) - -------------------------------------------------------------------------------- (NameSpecial Meeting of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): /X/ No fee required. / / Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11. (1) Title of each class of securities to which transaction applies: ------------------------------------------------------------------------ (2) Aggregate number of securities to which transaction applies: ------------------------------------------------------------------------ (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): ------------------------------------------------------------------------ (4) Proposed maximum aggregate value of transaction: ------------------------------------------------------------------------ (5) Total fee paid: ------------------------------------------------------------------------ / / Fee paid previously with preliminary materials. / / Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. (1) Amount Previously Paid: ------------------------------------------------------------------------ (2) Form, Schedule or Registration Statement No.: ------------------------------------------------------------------------ (3) Filing Party: ------------------------------------------------------------------------ (4) Date Filed: ------------------------------------------------------------------------ PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID OMB CONTROL NUMBER. SEI INSTITUTIONAL INVESTMENTS TRUST IMPORTANT SHAREHOLDER INFORMATION This document contains yourShareholders, a Proxy Statement and proxy card. Aa proxy card is, in essence,for a ballot. When you vote your proxy, it tells us how to vote on your behalf on important issues relating to your Fund(s). The proxy card may be completed by checking the appropriate box and voting for or against the specific proposals relating to your Fund(s). If you simply sign the proxy without specifying a vote, your shares will be voted in accordance with the recommendationspecial meeting of shareholders (the "Meeting") of the BoardU.S. Managed Volatility Fund (the "Fund"), a series of Trustees. Please spend a few minutes with the Proxy Statement, fill out your proxy card, and return it to us. Voting your proxy, and doing so promptly, ensures that the Funds will not need to conduct additional mailings. Please take a few moments to exercise your right to vote. Thank you. SEI INSTITUTIONAL INVESTMENTS TRUST Dear Shareholder, A shareholder meeting of the SEI Institutional Investments Trust and each of its portfolios (the "Funds") has been scheduled for October 27, 2004 (the "Meeting""Trust"). The Meeting will be held at the offices of SEI Investments Management Corporation ("SIMC"), One Freedom Valley Drive, Oaks, Pennsylvania 19456.is scheduled for November 2, 2010. If you were a shareholder of record of the Fund as of the close of business on August 17, 2004,September 3, 2010, you are entitled to vote at the Meeting, and any adjournment(s)adjournment of the Meeting. While you are, of course, welcome

SEI Investments Management Corporation ("SIMC") currently acts as investment adviser to join us atthe Fund. At the Meeting, mostthe Fund's shareholders cast their voteswill be asked to approve a sub-advisory agreement between SIMC and LSV Asset Management ("LSV") with respect to the Fund. If approved by filling outthe Fund's shareholders, LSV will manage a portion of the Fund's assets as described in the accompanying proxy materials. You are being asked to vote because LSV is an affiliate of SIMC, which triggers a requirement for shareholder approval before SIMC may hire LSV as a sub-adviser to the Fund.

The Board of Trustees of the Trust (the "Board"), including the independent trustees, has approved the sub-advisory agreement based on the research and signingrecommendations provided by SIMC. SIMC has comprehensively evaluated LSV's skills and investment results related to specific asset classes, investment styles and strategies. Because SIMC is responsible for paying sub-advisory fees, the enclosed proxy card. approval of the Fund's sub-advisory agreement with LSV will not result in any changes to advisory fees or other operating expenses payable by the Fund.

THE BOARD RECOMMENDS THAT YOU VOTE FOR THE PROPOSAL.

WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING, WE NEED YOUR VOTE. YOUR BALLOT SHOWS THE PROPOSAL ON WHICH PROPOSALS YOU ARE BEING ASKED TO VOTE. PLEASE REFER TO THE PROXY CARD ATTACHED TO THE ACCOMPANYING PROXY STATEMENT FOR DETAILS ON HOW TO VOTE ON. PLEASEBY TELEPHONE OR BY LOGGING ON TO THE INTERNET. IF YOU ARE UNABLE TO VOTE BY TELEPHONE OR ON THE INTERNET, YOU MAY ALSO MARK, SIGN, AND DATE THE ENCLOSED PROXY CARD AND RETURN IT PROMPTLY IN THE ENCLOSED POSTAGE-PAID ENVELOPE SO THATENVELOPE.

YOUR VOTE IS IMPORTANT TO US. PLEASE TAKE A FEW MINUTES TO REVIEW THE MAXIMUM NUMBER OFACCOMPANYING PROXY STATEMENT AND VOTE YOUR SHARES MAY BE VOTED. YOU MAY ALSO VOTE BY TELEPHONE OR THROUGH THE INTERNET. The attached Proxy Statement is designed to give you detailed information relating to each of the proposals on which you are asked to vote. We encourage you to support the Trustees' recommendations. The purpose of the Meeting is to consider the proposals set forth below and to transact such business as may be properly brought before the Meeting or any adjournment(s) thereof. The proposals described in the Proxy Statement relate to the following matters: - - To elect Trustees for all Funds. - - To approve eliminating or reclassifying certain fundamental policies and restrictions for all Funds. Shareholders also will be asked to vote on such other business as may properly come before the Meeting. Your vote is important. Please do not hesitate to call 1-800-DIAL-SEI if you have any questions about the proposals under consideration. TODAY.

Thank you for taking the time to consider theseyour attention and consideration of this important proposalsproposal and for your investment in the SEI Funds. Fund. If you need additional information, please call shareholder services at 1-800-DIAL-SEI.

Sincerely, /s/ Edward D. Loughlin - ---------------------- Edward D. Loughlin

Robert A. Nesher
President and Chief Executive Officer 2



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IMPORTANT NOTICE AlthoughNEWS FOR SHAREHOLDERS

While we recommend thatencourage you to read the completefull text of the enclosed Proxy Statement, for your convenience we have providedhere is a brief overview of the proposals. The information provided undermatter that requires your vote as a shareholder of the "Questions and Answers" section below is qualified in its entirety by reference toU.S. Managed Volatility Fund (the "Fund"), a series of SEI Institutional Investments Trust ("SIIT" or the Proxy Statement."Trust").

Q & A: QUESTIONS AND ANSWERS WHY AM

Q.  Why am I RECEIVING THIS PROXY STATEMENT?receiving this Proxy Statement?

A.  We are sending you this Proxy Statement and the enclosed proxy card on behalf of the Fund because SEI Investments Management Corporation ("SIMC"), the Fund's investment adviser, has proposed hiring LSV Asset Management ("LSV") as a sub-adviser to a portion of the assets of the Fund. The Board of Trustees (the "Board") is askingsoliciting your proxy to vote at the Special Meeting of Shareholders and at any adjournments or postponements of the Special Meeting. As a shareholder of the Fund, you are being asked to appoint LSV as a sub-adviser of the Fund and to approve a sub-advisory agreement between SIMC and LSV with respect to the Fund (the "Proposal").

Q.  Shareholders do not typically approve the appointment of sub-advisers to the Fund, so why am I being asked to approve LSV?

A.  In general, federal securities laws require shareholders to vote on the following proposals: - - To elect Trusteesapproval of new sub-advisory agreements. Nevertheless, the Fund's shareholders do not typically approve such sub-advisory agreements due to an exemptive order issued by the Securities and Exchange Commission. The exemptive order permits SIMC, with the approval of the Board and subject to certain conditions, to retain the services of sub-advisers for all Funds. - - To approve eliminatingthe Fund without shareholder approval. In this instance, however, SIMC may not rely on the exemptive order due to LSV's affiliation with the Fund and SIMC (SEI Investments Company ("SEI"), the parent company of SIMC, owns a minority partnership interest in LSV through its subsidiary, SEI Funds, Inc.).

Q.  Why does SIMC wish to retain LSV as a sub-adviser to the Fund?

A.  As a "manager of managers," SIMC allocates the Fund's assets to one or reclassifying certainmore sub-advisers and manages the performance and risk profiles of the Fund. SIMC has determined that the Fund will benefit from the sub-advisory services of LSV. SIMC believes that LSV's unique strategy and strong collaborative research efforts will aide the Fund in seeking to achieve its investment goal, which is capital appreciation with less volatility than the broad U.S. equity markets. LSV believes that long-term results can be achieved by systematically exploiting the judgmental biases and behavioral weaknesses that influence many investors. LSV attempts to eliminate aspects of emotional investing by using quantitative models to screen for stocks based on relative valuations and near-term fundamental policies and restrictionsmomentum improvements. Aiming for all Funds. WHY AMa consistent approach without subjective biases, LSV's proprietary model utilizes risk control measure s to attempt to control overall portfolio volatility while seeking to maximize expected returns.

Q.  How will the approval of the Proposal affect the Fund?

A.  Upon shareholder approval, LSV, as one of multiple sub-advisers to the Fund, will manage, in accordance with the Fund's investment strategy, the portion of the Fund's assets allocated to it by SIMC.

Q.  How will the approval of the Proposal affect the fees that are paid by shareholders?

A.  The approval of the Proposal will not result in any change to the fees that are paid by shareholders of the Fund. As with other sub-advisers to the Fund, SIMC will compensate LSV out of the investment advisory fees it receives from the Fund. However, unlike when SIMC hires other sub-advisers, SEI (SIMC's parent



company) will benefit from SIMC's hiring of LSV because it will receive a portion of the profits earned by LSV due to SEI's indirect partnership interest in LSV.

Q.  What happens if the Proposal is not approved for the Fund?

A.  If the Proposal is not approved by shareholders of the Fund, LSV's services will not be retained, and the Fund will not benefit from the performance and risk control attributes of LSV's unique investment strategy. In particular, SIMC believes that LSV's approach to reducing volatility is unique compared to other potential managers of the Fund because it relies on LSV's proprietary process for identifying economically stable companies. Alternative managers' approaches tend to rely much more on quantitative models that depend on a standard set of third party optimization or risk systems. For this reason, SIMC believes that adding LSV to the portfolio will provide better manager diversification than would be the case with alternative managers. Therefore, SIMC believes that any alternative manager that would be implemented if the Proposal is rejected will be less optimal than hiring LSV. Regardless, if the Proposal is not approved for the Fund, SIMC and the Board will then take such further action as they deem to be in the best interests of the Fund's shareholders.

Q.  Why did you send me this booklet?

A.  You are receiving these proxy materials — a booklet that includes the Notice of Special Meeting of Shareholders, the Proxy Statement and the proxy card — because you have the right to vote on the Proposal in connection with your investment in the Fund.

Q.  How does the Board recommend that I BEING ASKED TO ELECT TRUSTEES?vote?

A.  The Board, currently consistsincluding all of seventhe Trustees five of whomwho are not "interested persons," as such term ispersons" (as defined underin the Investment Company Act of 1940, as amended (the "1940 Act") (an "Independent Trustee").amended) of the Trust, has approved the appointment of LSV as a sub-adviser of the Fund and has approved the sub-advisory agreement between SIMC and LSV. The Board of Trustees has determined to increase the size of the Board by adding an additional Independent Trustee. Pursuant to requirements under the 1940 Act, more than two-thirds of the Trustees must have been elected by shareholders immediately upon the addition of a new Trustee. Five of the seven current Trustees of the Funds have been elected by shareholders. Immediately upon the addition of a new Trustee, less than two-thirds of the Trustees would have been elected by shareholders. Therefore, shareholder approval is required to add a new Trustee. WHY AM I BEING ASKED TO VOTE FOR CHANGES TO MY FUND'S INVESTMENT POLICIES AND RESTRICTIONS? The Board of Trustees believesunanimously recommends that it would benefit shareholders of the Funds to update the Funds' fundamental investment policies. SomeFund vote in favor of the Funds' policies reflect government regulations that no longer exist. In other cases, policies areProposal.

Q.  How do I place my vote and whom do I call for more restrictive than current government regulations require. The proposed changes in investment policies will benefit shareholdersinformation?

A.  You may vote your shares by allowingany of the Funds to adapt more quickly to future changes in investment opportunities. It is currently expected thatfollowing methods:

(1) Telephone: Call the proposed changes to investment policies will not have a material impacttelephone number provided on the manner in whichproxy card attached to the Funds are managed. WILL MY VOTE MAKE A DIFFERENCE? Yes. Your vote is neededenclosed Proxy Statement;

(2) Internet: Log on to ensure that the proposals can be acted upon. Additionally, your immediate responseInternet as directed on the enclosed proxy card will help saveattached to the costs of any further solicitations forenclosed Proxy Statement and vote electronically by following the on-line instructions;

(3) Regular Mail: If you are unable to vote by telephone or on the Internet, you can fill out the proxy card attached to the enclosed Proxy Statement and return it to us as directed on the proxy card; or

(4) Shareholder Meeting: You may attend the shareholder votes. meeting on November 2, 2010 and vote in person.

We encourage all shareholders to participate in the governance of their Fund. 3 HOW DO THE TRUSTEES SUGGEST THAT I VOTE? After careful consideration, the Trustees of your Fund, including the Independent Trustees who comprise a majority of each Fund's Board of Trustees, unanimously recommendwould prefer that you vote "FOR"by telephone or on the proposals. WHOM DO I CALL IF I HAVE QUESTIONS? We will be happy to answer your questions about thisInternet, if possible, because that enables a quicker processing of proxy solicitation. Please call us at 1-800-DIAL-SEI between 9:00 a.m.votes and 5:00 p.m., Eastern Standard Time, Monday through Friday. HOW CAN I VOTE MY SHARES?reduces costs. Please refer to yourthe proxy card attached to the enclosed Proxy Statement for further instructions on how to vote. 4 Should you require additional information regarding the Proposal or replacement of proxy cards, please call 1-800-DIAL-SEI.

Your Vote Is Important. Thank You for Promptly Voting Your Shares.




SEI INSTITUTIONAL INVESTMENTS TRUST 101 FEDERAL STREET BOSTON, MA 02110 ----------

U.S. Managed Volatility Fund

One Freedom Valley Drive
Oaks, PA 19456

NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
TO BE HELD ON OCTOBER 27, 2004 Notice is hereby given
NOVEMBER 2, 2010

NOTICE IS HEREBY GIVEN that a special meeting of shareholders (the "Meeting") of the U.S. Managed Volatility Fund (the "Fund"), a series of SEI Institutional Investments Trust (the("SIIT" or the "Trust") and each of its portfolios (the "Funds"), will be held at the offices of SEI Investments Management Corporation ("SIMC"), the investment adviser to the Fund, One Freedom Valley Drive, Oaks, Pennsylvania 19456 at 3:00 p.m., Eastern Time, on October 27, 2004, at [MEETING TIME] (Eastern time). The purposeNovember 2, 2010 for the following purpose:

1.  To appoint LSV Asset Management ("LSV") as a sub-adviser of the Meeting is to consider the Proposals set forth belowFund and to transact such other business as may be properly brought beforeapprove a sub-advisory agreement between SIMC and LSV with respect to the Meeting or any adjournment(s) thereof. The specifics of these Proposals, which are more fully described in the attached Proxy Statement, are as follows: 1. To elect Trustees for all Funds. Fund (the "Proposal").

2.  To approve eliminating or reclassifying certain fundamental policies and restrictions for all Funds. Shareholders also will be asked to vote on such other business as may properly come before the Meeting. Proposal 1 asks for shareholder approval of Trustees. Proposal 2 asks for shareholder approval of changes to certain investment policies and restrictions of the Funds. All shareholders are invited to attend the Meeting. However, if you are unable to be present at the Meeting, you are requested to mark, sign, and date the enclosed Proxy and return it promptly in the enclosed envelope so that the Meeting may be held and a maximum number of shares may be voted. You may also vote by telephone or through the Internet. Shares represented by duly executed proxies will be voted in accordance with the instructions given. Proxies may be revoked at any time before they are exercised by a written revocation received by the Trust's President at One Freedom Valley Drive, Oaks, Pennsylvania 19456, by properly executing a later-dated proxy, or by attending the Meeting and voting in person. In accordance with their own discretion, the proxies are authorized to vote ontransact such other business as may properly come before the Meeting or any adjourned session(s)adjournments thereof. 5

The Proposal is discussed in the attached Proxy Statement. The Board of Trustees of the Trust recommends that you vote FOR the Proposal.

Shareholders of record at the close of the business on August 17, 2004September 3, 2010 are entitled to notice of, and to vote at, the Meeting or any adjournment(s)adjournments thereof. BY ORDER OF THE BOARD OF TRUSTEES TIMOTHYYou are invited to attend the Meeting, but if you do not wish to do so, please vote by telephone, or by logging on to the Internet to vote electronically. Please refer to the proxy card attached to the attached Proxy Statement for details. If you are unable to vote by telephone, or on the Internet, you may also complete and sign the enclosed proxy card and return it in the accompanying envelope. Your vote is important no matter how many shares you own. You can vote easily and quickly by telephone, Internet, mail or in person at the Meeting. Please vote as promptly as possible.

By Order of the Board of Trustees

Timothy D. BARTO, SECRETARY September 9, 2004 6 Barto
Vice President and Secretary

Voting is important to ensure a quorum at the Meeting. Please call 1-800-DIAL-SEI for more information or if you have any questions about attending the Meeting in person. Proxies may be revoked at any time before they are exercised by submitting to the Secretary of the Trust at the address above a written notice of revocation, submitting a subsequently executed proxy card or by attending the Meeting and voting in person. Attendance at the Meeting will not by itself serve to revoke a proxy.



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SEI INSTITUTIONAL INVESTMENTS TRUST 101 FEDERAL STREET BOSTON, MA 02110 ----------

U.S. Managed Volatility Fund

One Freedom Valley Drive
Oaks, PA 19456

PROXY STATEMENT

SPECIAL MEETING OF SHAREHOLDERS
TO BE HELD ON NOVEMBER 2, 2010

This Proxy Statement is furnished in connection with the solicitation of proxies by the Board of Trustees of SEI Institutional Investments Trust ("SIIT" or the "Trust"), on behalf of the U.S. Managed Volatility Fund (the "Trust""Fund") and each of its portfolios (collectively, the "Funds") for use, to be voted at thea special meeting of shareholders to be held on October 27, 2004 at [MEETING TIME] (Eastern time)of the Fund at the offices of SEI Investments Management Corporation ("SIMC" or the "Adviser"), the investment adviser to the Fund, One Freedom Valley Drive, Oaks, Pennsylvania 19456, on November 2, 2010 at 3:00 p.m., Eastern Time, and at any adjourned session(s) thereof (such meeting and anyall adjournments thereof are hereinafter referred to as the(the "Meeting"). Shareholders of record of the FundsFund at the close of business on August 17, 2004September 3, 2010 (the "Record Date") are entitled to notice of, and to vote at, the Meeting. This Proxy Statement and the accompanying notice of special meeting and proxy card are first being mailed to shareholders on or about September 30, 2010.

The Meeting is being held to consider and vote on the following proposal as well as any other business that may properly come before the Meeting:

Proposal:  To appoint LSV Asset Management ("Shareholders"LSV") as a sub-adviser of the Fund and to approve a sub-advisory agreement between SIMC and LSV with respect to the Fund (the "Proposal").

As used in this Proxy Statement, the term "Board" refers to the Board of Trustees of the Trust. The term "Trustee" includes each trustee of the Board. A Trustee who is not an "interested person," as defined in the Investment Company Act of 1940, as amended (the "Investment Company Act"), of the Trust is referred to in this Proxy Statement as an "Independent Trustee."

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS

This Proxy Statement is available at www.proxyvote.com.



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THE PROPOSAL

TO APPOINT LSV AS A SUB-ADVISER TO THE FUND AND TO APPROVE A SUB-ADVISORY AGREEMENT BETWEEN SIMC AND LSV WITH RESPECT TO THE FUND

Description of the Proposal

Shareholders of the Fund are being asked to appoint LSV as a sub-adviser of the Fund and approve a sub-advisory agreement between SIMC and LSV with respect to the Fund (the "Sub-Advisory Agreement"). Pursuant to the Sub-Advisory Agreement, LSV will manage the portion of the Fund's assets allocated to it by SIMC in accordance with the Fund's investment strategies as described in its registration statement.

In general, the Investment Company Act requires all new investment advisory agreements, including sub-advisory agreements, to be approved by the vote of a "majority of the outstanding voting securities" (as defined in the Investment Company Act) of a registered investment company. However, SIMC and the Trust have obtained an exemptive order from the Securities and Exchange Commission ("SEC") that permits SIMC, with the approval of the Board and subject to certain conditions, to retain unaffiliated investment sub-advisers for the Fund without submitting the sub-advisory agreement to a vote of the Fund's shareholders (the "Order"). The Trust and SIMC, however, may not rely on the Order with respect to the retention of LSV, because LSV is an affiliated investment sub-adviser (SEI Fun ds, Inc., an affiliate of SIMC, owns a minority interest in LSV). Accordingly, the purpose of this Proxy Statement is to submit the Sub-Advisory Agreement to a vote of the Fund's shareholders pursuant to the requirements of the Investment Company Act described above.

SIMC currently serves as the investment adviser to the Fund pursuant to an investment advisory agreement between the Trust and SIMC, dated June 14, 1996, as amended (the "Advisory Agreement"). The Board approved the continuance of the Advisory Agreement for an additional one year period at its Board meeting held on March 23-25, 2010 (the "Board Meeting"). As described in more detail below, at the Board Meeting, the Board, including all of August 17, 2004, the Independent Trustees, also unanimously approved (a) the appointment of LSV as a sub-adviser to the Fund and (b) the Fund's Sub-Advisory Agreement. In addition, the Board, including all of the Independent Trustees, unanimously recommended the approval of the Fund's Sub-Advisory Agreement to the Fund's shareholders.

The Fund operates in what is commonly referred to as a "manager of managers" structure pursuant to the terms of the Order. SIMC acts as the "manager of managers" of the Fund, and is responsible for the investment performance of the Fund by allocating the Fund's assets to one or more sub-advisers and recommends the hiring or termination of sub-advisers to the Board. Each sub-adviser makes investment decisions for the assets it manages and continuously reviews and administers its portion of the Fund's investment program. SIMC oversees the sub-advisers to ensure compliance with the Fund's investment policies and guidelines, and monitors each sub-adviser's adherence to its investment style. SIMC receives, for its services, a management fee from the Fund and pays the sub-advisers out of that fee. SIMC currently employs two sub-advisers for the Fund.

In its role as manager of managers, SIMC has determined that the Fund will benefit from the sub-advisory services of LSV. SIMC believes that LSV's unique strategy and strong collaborative research efforts will aide the Fund in seeking to achieve its investment goal, which is capital appreciation with less volatility than the broad U.S. equity markets. LSV believes that superior long-term results can be achieved by systematically exploiting the judgmental biases and behavioral weaknesses that influence many investors. LSV attempts to eliminate aspects of emotional investing by using quantitative models to screen for stocks based on relative valuations and near-term fundamental and momentum improvements. Aiming for a consistent approach without subjective biases, LSV's proprietary model utilizes risk control measures to attempt to control overall portfolio volatility


while seeking to maximize expected returns. SIMC believes that LSV's approach to reducing volatility is unique compared to other potential managers of the Fund because it relies on LSV's proprietary process for identifying economically stable companies. Alternative managers' approaches tend to rely much more on quantitative models that depend on a standard set of third party optimization or risk systems. For this reason, SIMC believes that adding LSV as a sub-adviser to the Fund will provide better manager diversification than would be the case with alternative managers.

SIMC selected LSV after undertaking extensive research of potential advisers, which involved both qualitative and quantitative analysis. SIMC recommends that shareholders vote in favor of the Proposal to appoint LSV as a sub-adviser of the Fund and to approve the Sub-Advisory Agreement between SIMC and LSV.

If approved by shareholders, LSV will manage the portion of the Fund's assets allocated to it by SIMC in a manner consistent with the Fund's investment objective, policies and limitations under the supervision of SIMC and the Board. Because SIMC pays the Fund's sub-advisers out of the investment advisory fees that SIMC receives from the Fund, the hiring of LSV will not result in any changes to the Fund's expenses.

Description of the Material Terms of the Sub-Advisory Agreement

As described in more detail below, at the Board Meeting the Board considered the approval of the Fund's Sub-Advisory Agreement pursuant to which LSV will act as a sub-adviser for the Fund. The Sub-Advisory Agreement is attached hereto as Appendix A. The Sub-Advisory Agreement is substantially the same as the existing sub-advisory agreement between SIMC and LSV with respect to other series of the Trust. The description of the material terms of the Sub-Advisory Agreement below is qualified in its entirety by reference to the full text of the Sub-Advisory Agreement set forth in Appendix A.

Investment Advisory Services. LSV is responsible for providing the following investment advisory services to the Fund under the Sub-Advisory Agreement: (i) deciding what securities and other assets of the Fund will be purchased, retained or sold by the portion of the Fund's assets entrusted to it; (ii) arranging for the purchase and the sale of securities and other assets held by the Fund by placing purchase and sale orders with brokers or dealers selected by LSV; (iii) in its selection of brokers or dealers and the placing of orders, seeking the best overall terms available under the circumstances; and (iv) providing SIMC or the Board with periodic and special reports, balance sheets or financial information, and such other information with regard to its affairs as SIMC or the Board may reasonably request in administering the affairs of the F und. All services provided by LSV under the Sub-Advisory Agreement are required to be performed in accordance with the Fund's registration statement, compliance policies and procedures, and governing documents, the instructions and directions of SIMC and of the Board, and the requirements of the Investment Company Act and other applicable laws.

Compensation. For the services to be provided by LSV to the Fund, SIMC will pay LSV a sub-advisory fee at an annual rate of 0.25%, calculated based on the average daily value of the Fund's assets entrusted to LSV, and will be paid to LSV monthly. No fee will be accrued under the Sub-Advisory Agreement with respect to any day that the value of the Fund's assets under LSV's management equals zero. Because SEI Investments Company ("SEI," SIMC's parent company) maintains a minority partnership interest in LSV through its subsidiary, SEI Funds, Inc., of approximately 42%, SEI will benefit from the profits earned by LSV on the sub-advisory services it provides to the Fund.

Indemnification. Under the Sub-Advisory Agreement, LSV has an obligation to indemnify and hold harmless SIMC from and against any and all claims, losses, liabilities or damages (including reasonable attorney's fees and other related expenses) arising from or in connection with the performance of LSV's obligations under the Sub-Advisory Agreement. However, LSV's foregoing indemnification obligation will be reduced to the extent that the claim against, or the loss, liability or damage experienced by SIMC is caused by


SIMC's own willful misfeasance, bad faith or negligence, or to the reckless disregard of its duties under the Sub-Advisory Agreement. SIMC has the same reciprocal indemnification obligation to LSV under the Sub-Advisory Agreement.

Soft Dollars. The terms of the Sub-Advisory Agreement authorize LSV to pay to a broker or dealer who provides brokerage and research services a commission for executing a portfolio transaction for the Fund which is in excess of the amount of commission another broker or dealer would have charged for effecting that transaction, but only if, LSV determines in good faith that such commission was reasonable in relation to the value of the brokerage and research services provided by such broker or dealer (commonly referred to as "soft dollar arrangements"). Although soft dollar arrangements are allowed under the Sub-Advisory Agreement, LSV does not currently use soft dollar arrangements with any transactions of the various other SEI sponsored mutual funds that it provides advisory services to and does not currently plan to use soft dollar arrangeme nts for any Fund transactions.

Maintenance of Books and Records. Under the Sub-Advisory Agreement, LSV is required to maintain separate books and detailed records of all matters pertaining to the securities and other assets held by the Fund as required by Rule 31a-1 under the Investment Company Act (other than those records being maintained by the Fund's other service providers) relating to its responsibilities under the Sub-Advisory Agreement, and shall preserve such records for the periods and in the manner prescribed by Rule 31a-2 under the Investment Company Act.

Reporting Obligation. LSV has an obligation to provide the Trust's Chief Compliance Officer with reports relating to LSV's compliance program, including any "material compliance matters" (as such term is defined in Rule 38a-1 under the Investment Company Act) occurring at LSV. LSV is also required to provide the Trust's Chief Compliance Officer with reasonable access to the testing, analyses, reports and other documentation LSV uses in connection with monitoring of the effectiveness of the implementation of its compliance program.

Duration and Termination. If approved by shareholders at the Meeting, the Sub-Advisory Agreement is scheduled to continue in effect for an initial two year term, and may be continued from year to year thereafter if approved by a majority vote of the Board, including a majority of the Independent Trustees, cast in person at a meeting called for the purpose of voting on such approval or as otherwise required by the Investment Company Act. The Sub-Advisory Agreement can be terminated (a) by the Fund at any time, without the payment of any penalty, by the vote of a majority of Trustees of the Trust or by the vote of a majority of the outstanding voting securities of the Fund, (b) by SIMC at any time, without the payment of any penalty, on not more than 60 days' nor less than 30 days' written notice to LSV, or (c) by LSV at any time, without the pa yment of any penalty, on 90 days' written notice to SIMC.

Governing Law. The Sub-Advisory Agreement is governed by the internal laws of the Commonwealth of Massachusetts, without regard to conflict of law principles; provided, however, that nothing therein shall be construed as being inconsistent with the Investment Company Act.

Information about LSV

LSV, a general partnership organized under the laws of Delaware and located at 155 N. Wacker Drive, Suite 4600, Chicago, Illinois 60606, is a registered investment adviser that provides investment advisory services to institutions, including pension plans and investment companies. LSV is a value-oriented contrarian money manager offering a deep-value investment process utilizing a proprietary equity investment model to identify securities generally considered to be out of favor by the market. LSV is an adviser or sub-adviser to a number of equity mutual funds, including other SEI sponsored mutual funds. As of June 30, 2010, LSV managed


approximately $51.3 billion in total assets, of which approximately $1.3 billion were assets in SEI sponsored mutual funds.

The following are the names of persons who control LSV and the basis of their control as of June 1, 2010. Unless otherwise noted, the address of each person is 155 North Wacker Drive, Suite 4600, Chicago, IL 60606.

NameBasis of Control
Tremaine A. AtkinsonExecutive Officer
Josef LakonishokExecutive Officer
SEI Funds, Inc.*
One Freedom Valley Drive
Oaks, PA 19456

Ownership of more than 25%, but less than 50%, of LSV's voting
securities

*  SEI Funds, Inc. is a direct, wholly-owned subsidiary of SEI.

Listed below are the names, titles and addresses of each principal executive officer and general partner of LSV. Except as noted below, the principal business address of each principal executive officer and general partner of LSV is 155 North Wacker Drive, Suite 4600, Chicago, IL 60606.

NameTitle
Josef LakonishokChief Executive Officer, Chief Investment Officer**
Tremaine AtkinsonChief Operating Officer, Chief Compliance Officer**
Lakonishok CorporationGeneral Partner
Vishny CorporationGeneral Partner
Lacroix LLCGeneral Partner
Menno, L.L.C.General Partner
11-11L.L.C.General Partner
LSV Employee Group, LLCGeneral Partner
SEI Funds, Inc.
One Freedom Valley
Drive Oaks, PA 19456


General Partner

** Title reflects principal occupation.

LSV currently serves as investment sub-adviser to the following mutual funds, which have investment objectives and strategies similar to the Fund. These funds, their approximate net assets and the approximate number of units of beneficial interest ("shares") issued and outstanding for each Fund wereannual sub-advisory fees payable by these funds to LSV are as follows:
SHARES FUND NET ASSETS OUTSTANDING ---- ---------- ----------- SEI INSTITUTIONAL INVESTMENTS TRUST Large Cap Fund $ Large Cap Disciplined Equity Fund $ Small/Mid Cap Equity Fund $ Small Cap Fund $ International Equity Fund $ Core Fixed Income Fund $ Large Cap Index Fund $ Long Duration Bond Fund $ Extended Duration Bond Fund $
Each share

Fund Name Sub-Advisory Fee Rate Net Assets (as of June 30, 2010) 
SEI Institutional Managed Trust
U.S. Managed Volatility Fund
  0.25% $349,537,778  
SEI Institutional Managed Trust
Tax-Managed Managed Volatility Fund
  0.25% $199,007,790  


Currently, LSV is entitled to one vote and each fractional share is entitleda sub-adviser to a proportionate fractional vote onportion of the assets of the Trust's Large Cap, Small Cap and Small/Mid Cap Equity Funds. For the most recently completed fiscal year of each matterfund listed below, SIMC paid LSV sub-advisory fees with respect to these funds as follows:

Fund Name Sub-Advisory Fees Paid (000) 
SIIT Large Cap Fund $198  
SIIT Small Cap Fund $411  
SIIT Small/Mid Cap Equity Fund $807  

No officer or Trustee of the Trust is an officer, employee or partner of LSV or owns interests in, or has a material direct interest in, LSV. Robert A. Nesher and William M. Doran, each an "interested person" (as defined in the Investment Company Act) of the Trust, may have an indirect interest in LSV by virtue of their ownership of securities of SEI and their relationship with the Trust's distributor and SIMC, each of which is a subsidiary of SEI. SEI will benefit from SIMC's hiring of LSV because it will receive a portion of the profits earned by LSV due to which such shares areits indirect partnership interest in LSV.

Matters Considered by the Board

At the Board Meeting, the Board, including all of the Independent Trustees, unanimously approved the Fund's Sub-Advisory Agreement and recommended the approval of the Sub-Advisory Agreement to the Fund's shareholders. When considering the approval of the Sub-Advisory Agreement, the Trustees reviewed materials furnished by SIMC and LSV and considered the Board's fiduciary obligations and the standards to be votedused by the Board in reaching its decision. In considering whether to approve the Sub-Advisory Agreement, the Board considered and discussed a substantial amount of information and analysis provided by SIMC and LSV. SIMC explained the specific reasons for its recommendation to hire LSV, which are described above. SIMC also explained that the Proposal would need to be approved by the Fund's shareholders, which would involve a proxy solicitation and a special shareholders' meeting, and informed the Board that SIMC would bear the expenses associated with such solicitation and meeting.

In preparation for the Board Meeting, the Board requested and received written materials from LSV and SIMC that addressed, among other things, the following topics (a) the nature and quality of LSV's proposed investment management and other services; (b) LSV's investment management personnel; (c) LSV's operations and financial condition; (d) LSV's brokerage practices (including any soft dollar arrangements) and investment strategies; (e) the level of investment management services provided by LSV to other SEI sponsored mutual funds; (f) LSV's compliance systems, including LSV's policies and compliance procedures for personal securities transactions; (g) the current investment strategies employed by the Fund; (h) LSV's reputation, expertise and resources in financial markets; (i) the Fund's performance compared with similar mutual funds; and (j) the expected impact on SIMC's profitability of the appointment of LSV as a sub-advise r to the Fund.

In addition, at the Meeting. EachBoard Meeting, SIMC presented additional oral and written information to the Board to help the Board evaluate the quality of LSV's proposed investment advisory services. At the Board Meeting, the Board had the opportunity to ask questions and request further information regarding the appointment of LSV as a sub-adviser to the Fund.

In connection with the approval of the Fund's Sub-Advisory Agreement, the Board considered the following factors:

Nature, Extent and Quality of Services. The Board considered the nature, extent and quality of the services to be provided by LSV to the Fund and the resources it would dedicate to the Fund. In this regard, the Trustees evaluated, among other things, LSV's portfolio management personnel, experience and compliance


program. The Trustees considered LSV's specialization in value equity management for institutional investors, LSV's strong research staff, led by Josef Lakonishok, who would be one of the portfolio managers for the Fund, LSV's U.S. controlled volatility strategy, which would be employed by LSV in managing the Fund, and LSV's portfolio management risk control process, which is designed to control overall portfolio volatility consistent with the Fund's principal investment strategy. Because LSV serves as an investment sub-adviser to other SEI sponsored mutual funds for which the Board also oversees, the Board considered its own familiarity with the nature and quality of LSV's services. Following its evaluation, the Board concluded that, within the context of its full deliberations, the nature, extent and quality of services to be provided by LSV to the Fund and the resources of LSV to be dedicated to the Fund supported approval of the Sub-Advisory Agreement.

Investment Performance. The Board considered the written information provided by LSV regarding the historical investment performance of LSV's similarly managed account. Because LSV serves as an investment sub-adviser to other SEI sponsored mutual funds which the Board also oversees, the Board also considered its own familiarity with LSV's historical investment performance for these other mutual funds. Following evaluation, the Board concluded that, within the context of its full deliberations, that the historical investment performance of LSV and its investment management personnel, considering both recent and long-term performance, supported approval of the Sub-Advisory Agreement.

Cost of Services. The Board reviewed the proposed sub-advisory fee to be paid by SIMC to LSV with respect to the Fund. The Board reviewed the information provided by LSV with respect to the investment advisory fee charged to their other clients for similar services. The Board also reviewed the information provided by SIMC with respect to the sub-advisory fees paid to other sub-advisers to the Fund for similar services. The Board took into account the fact that LSV will be compensated by SIMC, and not by the Fund, and that SIMC's advisory fee with respect to the Fund will not increase in connection with the appointment of LSV as a sub-adviser to the Fund. The Board also took into consideration that even though SIMC's advisory fee will not increase due to the appointment of LSV, SIMC's parent company will receive a portion of LSV's profits as a result of its partnership interest in LSV. Following evaluation, the Board concluded that, within the context of its full deliberations, the proposed sub-advisory fee to be voting separatelypaid by SIMC to LSV with respect to the Fund is reasonable in light of the extent and each Fund's votes willquality of the services expected to be counted separately for each Proposal. If aprovided to the Fund approves a Proposal while one or more Funds doby LSV and supported approval of the Sub-Advisory Agreement.

Profits to be Realized by LSV and Economies of Scale. The Board did not approve that Proposal, the Proposal will be implemented onlymake any conclusions regarding LSV's profitability with respect to the Fund or Fundseconomies of scale associated with the retention of LSV because (a) LSV will be compensated by SIMC, and not by the Fund, and (b) the Board annually considers the existence of any economies of scale with respect to the Fund and whether those economies are passed along to the Fund's shareholders through SIMC's investment advisory fee schedule or other means, including any fee waivers by SIMC.

Conclusions. Based on the Trustees' deliberations and their evaluation of the information described above and other factors and information they believed relevant, the Board, including all of the Independent Trustees, unanimously approved (a) the appointment of LSV as a sub-adviser to the Fund and, (b) the Fund's Sub-Advisory Agreement. The Board concluded, in the exercise of its reasonable judgment, that have approvedthe terms of the Sub-Advisory Agreement, including the compensation to be paid thereunder, are fair and reasonable in relation to the services expected to be provided by LSV to the Fund and that Proposal.the appointment of LSV and the approval of the Sub-Advisory Agreement would be in the best interest of the Fund and its shareholders. The Board also determined that LSV serving as a sub-adviser to the Fund does not involve any conflict of interest fro m which LSV or SIMC or any of SIMC's affiliates would derive an inappropriate advantage. In addition, based on the foregoing conclusions, the Board, including all of the Independent Trustees, unanimously concluded to recommend the approval of the Sub-Advisory Agreement to the solicitation of proxies by mail, Trustees and officersFund's shareholders.


In reaching its determination regarding the approval of the Trust and officers and employees of SIMC,Sub-Advisory Agreement, the Shareholder Servicing Agent for the Trust, and certain third parties hired for such purpose, may solicit proxies in person, by Internet or by telephone. The Funds will bear the costsBoard, including all of the MeetingIndependent Trustees, considered all factors and costs ofinformation they believed relevant, including the factors and information discussed above. In their deliberations, the Board members did not identify any solicitation in connectionparticular factor or information that was all important or controlling, and each Board member may have attributed different weights to the various factors and information.

THE BOARD, INCLUDING ALL OF THE INDEPENDENT TRUSTEES,
UNANIMOUSLY RECOMMENDS THAT SHAREHOLDERS
VOTE IN FAVOR OF THE PROPOSAL.

INFORMATION ABOUT SIMC

SIMC serves as the investment adviser to the Fund. SIMC is registered with the Meeting. The Funds will use Georgeson Shareholder, third party solicitor, for solicitationSEC as an investment adviser and is an indirect, wholly-owned subsidiary of proxies. Georgeson Shareholder may solicit proxies in person, by Internet or by telephone. The Funds expect to pay approximately $[SOLICITATION FEE]to Georgeson Shareholder. Persons holding shares as nominees will, upon request, be reimbursed for their reasonable 7 expenses incurred in sending soliciting materials to their principals. The proxy card and this Proxy Statement are being mailed to Shareholders on or about September 9, 2004. Shares represented by duly executed proxies will be voted in accordance withSEI, the instructions given. Proxies may be revoked at any time before they are exercised by a written revocation received by the Trust's Presidentprincipal executive office of which is located at One Freedom Valley Drive, Oaks, Pennsylvania 19456, by properly executing19456. SEI is a later-dated proxy, or by attending the Meeting and voting in person. INTRODUCTION The Trust is organized as a Massachusetts business trustpublic company and is not required to hold annual shareholder meetings. listed on the NASDAQ exchange. As of June 30, 2010, SIMC had more than $83.2 billion in assets under management in over 10,000 accounts, both discretionary and non-discretionary.

The Meeting is being called in order to permit Shareholders to vote on:following table shows: (i) the electiondollar amount of Trustees;fees paid to SIMC by the Fund; and (ii) changesthe dollar amount of SIMC's voluntary fee waivers for the fiscal year ended May 31, 2010:

Fund Name Advisory Fees Paid (000) Advisory Fees Waived (000) 
U.S. Managed Volatility Fund $1,781  $865  

The following table shows the dollar amount of fees paid to the investment policies and restrictionsFund's sub-advisers by SIMC for the Funds.fiscal year ended May 31, 2010:

Fund Name Sub-Advisory Fees Paid (000) 
U.S. Managed Volatility Fund $666  

INFORMATION ABOUT OTHER SERVICE PROVIDERS

Principal Underwriter

SEI Investments Distribution Company ("SIDCo") serves as the principal underwriter of the Fund. The summary voting table below sets forthprincipal executive office of SIDCo is located at One Freedom Valley Drive, Oaks, Pennsylvania 19456.

Administrator and Transfer Agent

SEI Investments Global Funds Services (the "Administrator") serves as the action required of each Fund.
NO. PROPOSAL FUND --- -------- ---- 1. TO ELECT TRUSTEES FOR ALL FUNDS All Funds; Shareholders of the Trust voting together with other Shareholders of the Trust 2. TO APPROVE ELIMINATING OR RECLASSIFYING CERTAIN FUNDAMENTAL All Funds; Shareholders of each Fund POLICIES AND RESTRICTIONS voting separately
Shareholders also will be asked to vote on such other business as may properly come before the Meeting. IMPLEMENTATION OF THESE PROPOSALS WILL NOT RESULT IN INCREASED FUND FEES OR EXPENSES TO SHAREHOLDERS. 8 PROPOSAL 1. TO ELECT TRUSTEES FOR ALL FUNDS. Shareholders are being asked to elect Rosemarie B. Greco, Nina Lesavoyadministrator and James M. Williams (each a "Nominee" and, collectively, the "Nominees") as Trusteestransfer agent for the Trust.Fund. The Board of Trustees recommends that Shareholders elect the three Nominees to serve as Trustees, each to hold office until a successor is duly elected and qualified. Rosemarie B. Greco and Nina Lesavoy are currently members of the Board. Messes. Greco and Lesavoy were each appointed to the Board by the Board of Trustees on March 20, 2000 and September 17, 2003, respectively. James M. Williams was nominated by the Nominating Committee to the Board on June 17, 2004 and appointed by the Board on [DATE OF APPOINTMENT], subject to approval of his election by Shareholders, as required under the 1940 Act. Each Nominee has consented to being named in this Proxy Statement and to serving as Trustee if elected. The Trust knows of no reason why any Nominee would be unable or unwilling to serve as Trustee if elected. INFORMATION ABOUT CURRENT TRUSTEES AND NOMINEES FOR ELECTION AS TRUSTEES. The business and affairs of the Trust, including all of the Funds, are managed under the direction of its Board of Trustees. The table below provides basic information about each Nominee and each current Trustee. The mailingAdministrator's address for each Nominee and each Trustee, except for the mailing address for William M. Doran, is One Freedom Valley Drive, Oaks, Pennsylvania 19456. The mailing addressFund paid $137,000 in fees to the Administrator for Mr. Doranthe fiscal year ended May 31, 2010. The Administrator will continue to provide administrative and transfer agent services if the Sub-Advisory Agreement is 1701 Market Street, Philadelphia, PA 19103.
NUMBER OF FUNDS IN PRINCIPAL OCCUPATION DURING THE FUND POSITION THE PAST FIVE YEARS AND COMPLEX WITH THE TERM OF OFFICE AND OTHER DIRECTORSHIPS HELD BY TO BE NAME AND AGE TRUST LENGTH OF TIME SERVED TRUSTEE OR NOMINEE OVERSEEN - ------------------- ----- --------------------- ----------------------------------------------- --------- NOMINEES FOR INDEPENDENT TRUSTEES Rosemarie B. Greco; Trustee No set term; served Director, Governor's Office of Health Care 68 58 since 1999. Reform, Commonwealth of Pennsylvania since 2003. Founder and Principal, Grecoventures Ltd. from 1999 to 2002. Interim President & Chief Executive Officer, Private Industry Council of Philadelphia, April 1998-August 1998. President, Corestates Financial Corp., 1996-1997; Chief Executive Officer and President, Corestates Bank, N.A., 1994-1997. Director of Sunoco, Inc. and Exelon Corporation. Trustee of Pennsylvania Real Estate Investment Trust, SEI Asset Allocation Trust, SEI Daily Income Trust, SEI Institutional International Trust, SEI Institutional Investments Trust, SEI Institutional Managed Trust, SEI Index Funds,
9
NUMBER OF FUNDS IN THE FUND POSITION PRINCIPAL OCCUPATION DURING THE PAST FIVE YEARS COMPLEX WITH THE TERM OF OFFICE AND AND OTHER DIRECTORSHIPS HELD BY TO BE NAME AND AGE TRUST LENGTH OF TIME SERVED THE TRUSTEE OR NOMINEE OVERSEEN - ------------------- ----- --------------------- ----------------------------------------------- --------- SEI Liquid Asset Trust and SEI Tax Exempt Trust. Nina Lesavoy; 47 Trustee No set term; served Partner, Cue Capital since 2002. Head of 68 since 2003. Sales, Investorforce, January 2000-December 2001. Global Partner working for the CEO, Invesco Capital, January 1998-January 2000. Head of Sales and Client Services, Chancellor Capital and later LGT Asset Management, 1986-2000. Trustee of SEI Absolute Return Master Fund, L.P., SEI Opportunity Master Fund, L.P., SEI Absolute Return Fund, L.P., SEI Opportunity Fund, L.P., SEI Asset Allocation Trust, SEI Tax Exempt Trust, SEI Daily Income Trust, SEI Institutional Managed Trust, SEI Liquid Asset Trust, SEI Index Funds, SEI Institutional International Trust and SEI Institutional Investments Trust. James M. Williams; 56 No set term. Vice President and Chief Investment Officer, J. 68 Paul Getty Trust, Non Profit Foundation Visual Arts, since December 2002. President, Harbor Capital Advisors and Harbor Mutual Funds, 2000-2002. Manager, Pension Asset Management, Ford Motor Company, 1997-1999. CURRENT INDEPENDENT TRUSTEES F. Wendell Gooch; Trustee No set term; served Retired. Trustee of SEI Asset Allocation Trust, 68 71 since 1995. SEI Daily Income Trust, SEI Institutional International Trust, SEI Institutional Investments Trust, SEI Institutional Managed Trust, SEI Liquid Asset Trust, SEI Index Funds, SEI Tax Exempt Trust, STI Classic Funds and STI Classic Variable Trust. James M. Storey; 73 Trustee No set term; served Attorney, Solo Practitioner since 1994. 68 since 1995. Partner, Dechert Price & Rhoads (law firm), September 1987-December 1993. Director of U.S. Charitable Gift Trust. Trustee of The Advisors' Inner Circle Fund, The Arbor Fund, Expedition Funds, The MDL Funds, Massachusetts Health and Education Tax-Exempt Trust, SEI Asset Allocation Trust, SEI Daily Income Trust, SEI Institutional International Trust, SEI Institutional Investments Trust, SEI Institutional Managed Trust, SEI Index Funds, SEI Liquid Asset Trust and SEI Tax Exempt Trust.
10
NUMBER OF FUNDS IN THE FUND POSITION PRINCIPAL OCCUPATION DURING THE PAST FIVE YEARS COMPLEX WITH THE TERM OF OFFICE AND AND OTHER DIRECTORSHIPS HELD BY TO BE NAME AND AGE TRUST LENGTH OF TIME SERVED THE TRUSTEE OR NOMINEE OVERSEEN - ------------------- ----- --------------------- ----------------------------------------------- --------- George J. Sullivan, Jr.; Trustee No set term; served Self-employed Consultant, Newfound Consultants 68 61 since 1996. Inc. since April 1997. Trustee of State Street Navigator Securities Lending Trust, The Advisors' Inner Circle Fund, The Arbor Fund, Expedition Funds, The MDL Funds, SEI Absolute Return Master Fund, L.P., SEI Opportunity Master Fund, L.P., SEI Absolute Return Fund, L.P., SEI Opportunity Fund, L.P., SEI Asset Allocation Trust, SEI Daily Income Trust, SEI Institutional International Trust, SEI Institutional Investments Trust, SEI Institutional Managed Trust, SEI Index Funds, SEI Liquid Asset Trust and SEI Tax Exempt Trust. CURRENT INTERESTED TRUSTEES William M. Doran; 64 Trustee No set term; served Self-employed Consultant. Partner, Morgan, 68 since 1995. Lewis & Bockius LLP (law firm) from 1976 to 2003, counsel to the Trust, SEI Investments Company, SIMC, SEI Investments Fund Management and SEI Investments Distribution Co. Director of SEI Investments Company since 1974; Secretary of SEI Investments Company since 1978. Director of SEI Investments Distribution Co. since 2003. Trustee of The Advisors' Inner Circle Fund, The Arbor Fund, Expedition Funds, The MDL Funds, SEI Asset Allocation Trust, SEI Daily Income Trust, SEIInstitutional International Trust, SEI Institutional Investments Trust, SEI Institutional Managed Trust, SEI Index Funds, SEI Liquid Asset Trust and SEI Tax Exempt Trust. Robert A. Nesher; 58 Chairman No set term; served Currently performs various services on behalf 68 since 1995. of SEI Investments Company for which Mr. Nesher is compensated. Executive Vice President of SEI Investments Company, 1986-1994. Director and Executive Vice President of SIMC, SEI Investments Fund Management and SEI Investments Distribution Co., 1981-1994. Trustee of The Advisors' Inner Circle Fund, The Arbor Fund, Bishop Street Funds, Expedition Funds, The MDL Funds, SEI Global Master Fund, plc, SEI Global Assets Fund, plc, SEI Global Investments Fund, plc, SEI Investments Global, Limited, SEI Absolute Return Master Fund, L.P., SEI Opportunity Master Fund, L.P., SEI Absolute Return Fund, L.P., SEI Opportunity Fund, L.P., SEI Asset Allocation Trust, SEI Daily Income Trust, SEI
11
NUMBER OF FUNDS IN THE FUND POSITION PRINCIPAL OCCUPATION DURING THE PAST FIVE YEARS COMPLEX WITH THE TERM OF OFFICE AND AND OTHER DIRECTORSHIPS HELD BY TO BE NAME AND AGE TRUST LENGTH OF TIME SERVED THE TRUSTEE OR NOMINEE OVERSEEN - ------------------- ----- --------------------- ----------------------------------------------- --------- Institutional International Trust, SEI Institutional Investments Trust, SEI Institutional Managed Trust, SEI Index Funds, SEI Liquid Asset Trust and SEI Tax Exempt Trust.
Messrs. Nesher and Doran are Trustees who may be deemedapproved by shareholders.

BROKERAGE COMMISSIONS

For the fiscal year ended May 31, 2010, the Fund paid no brokerage fees to be "interested persons"affiliated brokers.


VOTING INFORMATION

Required Vote

Approval of the Funds, as that term is defined inProposal requires the 1940 Act ("Interested Trustees"), by virtue of their relationship with SIMC, which serves as investment adviser to the Funds, and SEI Investments Distribution Co., the Funds' distributor. MEETINGS AND COMMITTEES OF THE BOARD OF TRUSTEES. The chart below provides information about the number of Board meetings held during the Trust's most recently completed fiscal year and which Board members attended such meetings.
NUMBER OF BOARD MEETINGS HELD DURING TRUSTEES WHO ATTENDED TRUST AND FISCAL YEAR MOST RECENT FISCAL YEAR THE MEETING - --------------------- ----------------------- --------------------- SEI Institutional Investments Trust 9 The Trustees attended all meetings, May 31, 2004 except for Mr. Gooch and Ms. Greco, who were each absent from one meeting.
The Trust has a standing Audit Committee currently consisting of Messrs. Gooch, Storey and Sullivan, and Messes. Greco and Lesavoy, each of whom are not "interested persons" as such term is defined in the 1940 Act (collectively, the "Independent Trustees"). The Audit Committee assists the Trustees in their oversight of the Trust's financial reporting. The chart below provides information about the number of Audit Committee Meetings held during the Trust's most recently completed fiscal year and which Audit Committee members attended such meetings.
NUMBER OF AUDIT COMMITTEE AUDIT COMMITTEE MEETINGS HELD DURING MEMBERS WHO ATTENDED TRUST AND FISCAL YEAR MOST RECENT FISCAL YEAR THE MEETING - --------------------- ----------------------- -------------------- SEI Institutional Investments Trust 4 The Audit Committee members attended May 31, 2004 all meetings, except for Messrs. Gooch and Storey, who were each absent from one meeting.
The Trust has a standing Nominating Committee currently consisting of the Independent Trustees. The Nominating Committee is responsible for evaluating and recommending nominees for election to the Board. The Nominating Committee meets as necessary and the chart below 12 provides information about the number of Nominating Committee Meetings held during the Trust's most recently completed fiscal year.
NUMBER OF NOMINATING COMMITTEE MEETINGS HELD TRUST AND FISCAL YEAR DURING MOST RECENT FISCAL YEAR - --------------------- -------------------------------------------- SEI Institutional Investments Trust 2 May 31, 2004
The Nominating Committee has adopted a charter, a copy of which is attached hereto as Exhibit A. It is the Nominating Committee's policy to review shareholder recommendations for nominations to fill vacancies on the Board if such recommendations are submitted in writing and addressed to the Nominating Committee at the applicable Trust's offices. The Trust does not have a standing compensation committee or any committee performing similar functions. COMPENSATION OF THE TRUSTEES, OFFICERS AND OTHERS. The Interested Trustees and officers of the Trust do not receive compensation from the Trust. The chart below provides information about the annual fee that each Independent Trustee receives from the Trust, total compensation accrued and payable to the Independent Trustees by the Trust and the "fund complex" for the Trust's most recently completed fiscal year. The "fund complex" is composed of all of the Funds of the Trust and all of the portfolios of the SEI Liquid Asset Trust, SEI Tax Exempt Trust, SEI Daily Income Trust, SEI Index Funds, SEI Institutional Managed Trust, SEI Institutional International Trust and SEI Asset Allocation Trust.
PENSION OR RETIREMENT NAME OF INDEPENDENT TRUSTEE ANNUAL FEE TOTAL BENEFITS ACCRUED ESTIMATED ANNUAL AND PAYABLE TO COMPENSATION FROM AS PART OF FUND BENEFITS UPON TOTAL COMPENSATION FISCAL YEAR TRUSTEE TRUST EXPENSES RETIREMENT FROM FUND COMPLEX - --------------------------- ---------- ----------------- ---------------- ---------------- ------------------ SEI INSTITUTIONAL INVESTMENTS TRUST - FISCAL YEAR ENDED MAY 31, 2004 F. Wendell Gooch $ 26,464 N/A N/A $ 133,000 James M. Storey $ 26,464 N/A N/A $ 133,000 George J. Sullivan, Jr. $ 26,464 N/A N/A $ 133,000 Rosemarie B. Greco $ 26,464 N/A N/A $ 133,000 Nina Lesavoy $ 26,464 N/A N/A $ 133,000
OWNERSHIP OF FUND SECURITIES. The table below shows the dollar range of equity securities beneficially owned by each Nominee or Trustee as of June 30, 2004. 13
AGGREGATE DOLLAR RANGE OF EQUITY SECURITIES IN ALL FUNDS NAME OF TRUSTEE DOLLAR RANGE OF EQUITY OVERSEEN BY TRUSTEE OR OR NOMINEE SECURITIES FOR EACH FUND NOMINEE IN THE FUND COMPLEX --------------- ------------------------ -------------------------- Mr. Nesher None Over $100,000 Mr. Doran Mr. Gooch None Over $100,000 Mr. Storey Mr. Sullivan None None Ms. Greco None None Ms. Lesavoy Mr. Williams None None
Proposal 2. To approve eliminating or reclassifying certain fundamental policies and restrictions for all Funds. The Board of Trustees recommends that Shareholders approve eliminating or reclassifying certain fundamental investment policies for all Funds. GENERAL DESCRIPTION OF 1940 ACT REQUIREMENTS. Each Fund operates in accordance with the investment objectives, policies and restrictions described in its prospectus and statement of additional information. The 1940 Act requires that each Fund classify specific investment policies as fundamental policies and requires a shareholder vote to make changes to those policies. Other policies not enumerated in the 1940 Act can be designated by the Fund as fundamental, and if so designated, may only be changed by shareholder vote or can be designated as non-fundamental and may be changed by aaffirmative vote of the Board of Trustees. Since the time each Fund was created, there have been a number of changes in the laws and regulations that govern the Funds. First, significant federal legislation in 1996 pre-empted state regulation of all mutual funds. As a result, many investment policies previously imposed on the Funds by various states are no longer required. In addition, new types of investment techniques and instruments have been developed, which the Funds may not be permitted to use or invest in because of their outdated fundamental policies. SIMC performed a comprehensive review of the Funds' fundamental policies, and based on the recommendations of SIMC, the Board of Trustees has approved policy revisions that are designed to: (i) simplify and modernize those policies that are required to be fundamental; and (ii) eliminate or reclassify as non-fundamental those fundamental policies that are no longer required to be fundamental or that are no longer necessary. In some cases the Board of Trustees recommends that fundamental policies be amended or eliminated completely. In certain cases, the Board of Trustees has approved non-fundamental policies that in effect reclassify all or partholders of a fundamental policy into a non-fundamental policy. Changes to non-fundamental policies do not require shareholder approval. While not 14 specifically subject to shareholder approval, the non-fundamental policies approved by the Board will not take effect unless the related change to the fundamental policy is approved by Shareholders. Once converted to non-fundamental, a policy may be changed without shareholder approval. If the Board decides in the future to change or eliminate a reclassified non-fundamental policy, the change would be disclosed in the Funds' prospectus(es) or statement of additional information, as required. Approval of these changes by Shareholders would allow the Funds greater flexibility to respond to a changing investment environment. The Board of Trustees also believes that the proposed changes will enhance the Funds' investment adviser's ability to manage the Funds' investment portfolios. In addition, by reducing to a minimum those policies that can be changed only by shareholder vote, the Funds in the future may be able to avoid the costs and delay associated with a shareholder meeting. Each proposed change to a Fund's fundamental policies recommended by the Board of Trustees is discussed in detail below. In order to help you understand the proposed changes, attached as Exhibit B is a list of the Funds' current fundamental policies proposed to be replaced by new fundamental and/or non-fundamental policies or to be eliminated. VOTING REQUIREMENTS FOR PROPOSAL 2. Approval of each item of Proposal 2 requires the favorable vote of a majority of outstanding voting shares of a Fund as defined by the 1940 Act. Proposal 2 is separated into separate items. YOU MAY VOTE FOR PROPOSAL 2 AS A GROUP OR BY EACH ITEM. If you vote on Proposal 2 as a group, a Fund will record your votes as having been cast "FOR" or "AGAINST," according to your vote, each applicable item within Proposal 2. Alternatively, you may vote separately for or against each item. If you return a proxy card with a vote on the entire Proposal as a group and separate votes on specific items, your vote on the entire Proposal as a group will control and be recorded as your intended vote. If Shareholders approve some, but not all, items of Proposal 2, a Fund will have a combination of certain current fundamental policies and certain new fundamental and/or non-fundamental policies. Fundamental policies approved by the Shareholders would become effective immediately after the Meeting. However, it is not expected that the changes in fundamental policies will materially change the manner in which the Funds are managed. ITEM 2 (a) - FUNDAMENTAL POLICY REGARDING DIVERSIFICATION CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's current fundamental policy regarding diversification. 15
CURRENT FUNDS FUNDAMENTAL POLICY ----- ------------------ Large Cap, Small Cap, Core Fixed Income, International With respect to 75% of its assets, no Fund may: (i) Equity, Large Cap Index, Large Cap Disciplined Equity, purchase the securities of any issuer (except Small/Mid Cap Equity, Long Duration Bond and Extended securities issued or guaranteed by the U.S. Government, Duration Bond Funds its agencies or instrumentalities) if, as a result, more than 5% of its total assets would be invested in the securities of such issuer; or (ii) acquire more than 10% of the outstanding voting securities of any one issuer.
PROPOSED FUNDAMENTAL POLICY. No Fund may purchase securities of an issuer if it would cause the Fund to fail to satisfy the diversification requirements for a diversified management company under the 1940 Act, the rules or regulations thereunder or any exemption therefrom, as such statute, rules or regulations may be amended or interpreted from time to time. ANALYSIS OF PROPOSED CHANGES. Each Fund is classified as a "diversified" mutual fund. This Proposal does not seek to change the Funds' status as diversified investment management companies, but to provide the Funds with maximum flexibility allowed for diversified investment companies under the 1940 Act. The proposed fundamental policy will require a Fund to comply with the limitations imposed by the 1940 Act on "diversified" funds. Section 5(b) of the 1940 Act prohibits a "diversified" mutual fund from purchasing securities of any one issuer if, at the time of purchase, more than 5% of the Fund's total assets would be invested in securities of that issuer or the Fund would own or hold more than 10%"majority of the outstanding voting securities of that issuer, except that up to 25%securities" (as defined by the Investment Company Act) of the Fund's total assets may be invested without regardFund, which means, with respect to this limitation. The 5% limitation does not apply to securities issuedthe Fund, the lesser of (a) 67% or guaranteed by the U.S. Government, its agencies or instrumentalities or to securities issued by other investment companies. PROPOSED NON-FUNDAMENTAL POLICY. The Board has also approved that each Fund's current fundamental policy regarding diversification be reclassified as a non-fundamental policy. The reclassificationmore of the Funds' current fundamental policy to a non-fundamental policyshares of the Fund present at the Meeting if the holders of more than 50% of the outstanding shares of the Fund are present in person or by proxy or (b) more than 50% of the outstanding shares of the Fund.

If the Proposal is not expected to affect the managementapproved by shareholders of the Funds. The BoardFund, LSV's services will not be retained, and the Fund will not benefit from the performance and risk control attributes of TrusteesLSV's unique investment strategy. In particular, SIMC believes that LSV's approach to reducing volatility is unique compared to other potential managers of the Fund because it relies on LSV's proprietary process for identifying economically stable companies. Alternative managers' approaches tend to rely much more on quantitative models that depend on a standard set of third party optimization or risk systems. For this reason, SIMC believes that adding LSV to each portfolio will provide better manager diversification than would be able to make changes to the non-fundamental policy incase with alternative managers. Therefore, SIMC believes that any alternative manager that would be implemented if the futureProposal is rejected will be less optimal than hiring LSV. Regardless, if deemedthe Proposal is not approved for the Fund, SIMC and the Board will then take such further action as they deem to be in the best interests of the Funds and theirFund's shareholders. Accordingly, should Shareholders approve this

Quorum

In order to act upon the Proposal, the non-fundamental policy described in Exhibit B will take effect. ITEM 2 (b) - FUNDAMENTAL POLICY REGARDING CONCENTRATION CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's current fundamental policy regarding concentration.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income, International No Fund may purchase any securities which would cause Equity and Large Cap Index Funds more than 25% of the total assets of the Fund to be invested in the securities of one or more issuers conducting their principal business activities in the same industry, provided that this limitation does not apply to
16
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- investments in obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities. Large Cap Disciplined Equity, Small/Mid Cap Equity, No Fund may purchase any securities which would cause 25% Long Duration Bond and Extended Duration Bond Funds or more of the total assets of the Fund to be invested in the securities of one or more issuers conducting their principal business activities in the same industry, provided that this limitation does not apply to investments in obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities.
PROPOSED FUNDAMENTAL POLICY. No Fund may concentrate investments in a particular industry or group of industries, as concentration is defined under the 1940 Act, the rules and regulations thereunder or any exemption therefrom, as such statute, rules or regulations may be amended or interpreted from time to time. ANALYSIS OF PROPOSED CHANGES. The 1940 Act generally requires the Funds to adopt a fundamental policy regarding concentration of investment in particular industries. It is currently the Securities and Exchange Commission (the "SEC") staff's position that if 25% or more of the value of a fund's assets are invested in securities of issuers in one industry, that fund's investments will be deemed to be concentrated in that industry. However, this 25% limitation does not apply to: (i) fund investments in government securities; (ii) municipal bond fund investments in industrial development and pollution control bonds; and (iii) fund investments in certain obligations of domestic banks. The proposed policy is more flexible than the current policy, and would permit the Funds to take appropriate and timely action in the future to amend the Funds' policies in response to market or regulatory changes, without the expense and delay associated with a shareholder meeting. The Board of Trustees anticipates taking such action only in the event that the SEC changes its position on the meaning of industry concentration. PROPOSED NON-FUNDAMENTAL POLICY. The Board has also approved that each Fund's current fundamental policy regarding concentration be reclassified as a non-fundamental policy. The reclassification of the Funds' current fundamental policy to a non-fundamental policy is not expected to affect the management of the Funds. The Board of Trustees would be able to make changes to the non-fundamental policy in the future if deemed to be in the best interests of the Funds and their shareholders. Accordingly, should Shareholders approve this Proposal, the non-fundamental policy described in Exhibit B will take effect. ITEM 2 (c) - FUNDAMENTAL POLICIES REGARDING BORROWING AND SENIOR SECURITIES CURRENT FUNDAMENTAL POLICIES. The chart below describes each Fund's current fundamental policy regarding borrowing and senior securities.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap Index, Large Cap Disciplined Equity, Each Fund may borrow money in an amount up to 33 1/3%
17
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Small/Mid Cap Equity, Long Duration Bond and Extended of the value of its total assets, provided that, for purposes Duration Bond Funds of this limitation, investment strategies which either obligate a Fund to purchase securities or require a Fund to segregate assets are not considered to be borrowings. Except where a Fund has borrowed money for temporary purposes in amounts not exceeding 5% of its assets, asset coverage of 300%quorum is required for all borrowings. No Fund may issue senior securities (as defined in the 1940 Act) except as permitted by rule, regulation or order of the SEC. Large Cap, Small Cap, Core Fixed Income and No Fund may issue any class of senior security or sell any International Equity Funds senior security of which it is the issuer, except that a Fund may borrow from any bank, provided that immediately after any such borrowing there is asset coverage of at least 300% for all borrowings of the Fund, and further provided that, to the extent that such borrowings exceed 5% of a Fund's total assets, all borrowings shall be repaid before such Fund makes additional investments. The term "senior security" shall not include any temporary borrowings that do not exceed 5% of the value of such Fund's total assets at the time the Fund makes such temporary borrowing. In addition, investment strategies that either obligate a Fund to purchase securities or require a Fund to segregate assets will not be considered borrowings or senior securities.
PROPOSED FUNDAMENTAL POLICY. No Fund may borrow money or issue senior securities (as defined in the 1940 Act), except to the extent permitted under the 1940 Act, the rules and regulations thereunder or any exemption therefrom, as such statute, rules or regulations may be amended or interpreted from time to time. ANALYSIS OF PROPOSED CHANGES. Under the 1940 Act, the Funds are required to adopt fundamental policies regarding borrowing and issuance of senior securities. The 1940 Act presently limits a fund's ability to borrow more than one-third of the value of its total assets, subject to certain coverage requirements. Over time, the SEC has acknowledged the existence of new types of investment practices that technically may be considered borrowings, but that may be permissible investment practices for a fund. The 1940 Act generally prohibits the Funds from issuing senior securities, although it provides allowances for certain borrowings and certain other investments, such as short sales or reverse repurchase agreements, if Fund assets are earmarked or segregated to cover such obligations. Currently the Funds have two separate fundamental policies for borrowing and issuance of senior securities. The current fundamental policy regarding borrowing is more restrictive than the current standards permitted under the 1940 Act. As a result, it is proposed that the Funds adopt a more flexible single fundamental policy to address both borrowing and issuance of senior securities. This would permit the Funds to take appropriate and timely action in the future to 18 amend the Funds' non-fundamental policies, without the expense and delay associated with a shareholder meeting. PROPOSED NON-FUNDAMENTAL POLICY. The Board has also approved that each Fund's current fundamental policy regarding borrowing and issuance of senior securities be reclassified as a non-fundamental policy. The reclassification of the Funds' current fundamental policy to a non-fundamental policy is not expected to affect the management of the Funds. The Board of Trustees would be able to make changes to the non-fundamental policy in the future if deemed to be in the best interests of the Funds and their shareholders. Accordingly, should Shareholders approve this Proposal, the non-fundamental policy described in Exhibit B will take effect. ITEM 2 (d) - FUNDAMENTAL POLICY REGARDING LENDING CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's current fundamental policy regarding lending.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income, International No Fund may make loans if, as a result, more than 33 1/3% Equity, Large Cap Index, Large Cap Disciplined Equity, of its total assets would be lent to other parties, except Small/Mid Cap Equity, Long Duration Bond and Extended that each Fund may: (i) purchase or hold debt instruments Duration Bond Funds in accordance with its investment objective and policies; (ii) enter into repurchase agreements; and (iii) lend its securities.
PROPOSED FUNDAMENTAL POLICY. No Fund may make loans, except to the extent permitted under the 1940 Act, the rules and regulations thereunder or any exemption therefrom, as such statute, rules or regulations may be amended or interpreted from time to time. ANALYSIS OF PROPOSED CHANGES. Under the 1940 Act, the Funds are required to adopt fundamental policies regarding lending. Although the 1940 Act does not impose percentage limits on the amount that funds may lend, the 1940 Act prohibits funds from making loans to persons who control or are under common control with the funds, effectively prohibiting loans where conflicts of interest or undue influence are most likely present. It is proposed that the Funds adopt a more flexible fundamental policy. This fundamental lending policy would limit the Funds only as required by the 1940 Act, thereby permitting the Funds to adapt to future developments in investment practices and changes in laws and regulations without the delay and cost of a shareholder meeting. PROPOSED NON-FUNDAMENTAL POLICY. The Board has also approved that each Fund's current fundamental policy regarding lending be reclassified as a non-fundamental policy. The reclassification of the Funds' current fundamental policy to a non-fundamental policy is not expected to affect the management of the Funds. The Board of Trustees would be able to make changes to the non-fundamental policy in the future if deemed to be in the best interests of the Funds and their shareholders. Accordingly, should Shareholders approve this Proposal, the non-fundamental policy described in Exhibit B will take effect. 19 ITEM 2 (e) - FUNDAMENTAL POLICY REGARDING PURCHASE OF REAL ESTATE AND COMMODITIES CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's current fundamental policy regarding purchase of real estate and commodities.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income, No Fund may purchase or sell real estate, physical International Equity, Large Cap Index, Large Cap commodities, or commodities contracts, except that each Fund Disciplined Equity, Small/Mid Cap Equity, Long may purchase: (i) marketable securities issued by companies Duration Bond and Extended Duration Bond Funds which own or invest in real estate (including real estate investment trusts), commodities, or commodities contracts; and (ii) commodities contracts relating to financial instruments, such as financial futures contracts and options on such contracts.
PROPOSED FUNDAMENTAL POLICY. No Fund may purchase or sell commodities or real estate, except to the extent permitted under the 1940 Act, the rules and regulations thereunder or any exemption therefrom, as such statute, rules or regulations may be amended or interpreted from time to time. ANALYSIS OF PROPOSED CHANGES. Under the 1940 Act, the Funds are required to adopt a fundamental policy regarding investment in real estate and commodities. The 1940 Act does not prohibit the Funds from purchasing commodities. It is the SEC staff's position that an interest in real estate includes securities (other than marketable securities) of companies whose assets consist substantially of real property and interests therein, including mortgages and other liens, but does not include securities of companies whose investments in real estate are incidental to another business. The 1940 Act does not restrict investment in marketable securities of issuers who invest in real estate (E.G., Real Estate Investment Trusts or REITs). It is proposed that the Funds adopt a more flexible fundamental policy. This fundamental policy regarding the purchase of real estate and commodities would limit the Funds only as required by the 1940 Act, thereby permitting the Funds to adapt to future developments in investment practices and changes in laws and regulations without the delay and cost associated with a shareholder meeting. PROPOSED NON-FUNDAMENTAL POLICY. The Board has also approved that each Fund's current fundamental policy regarding purchase of real estate and commodities be reclassified as non-fundamental policy. The reclassification of the Funds' current fundamental policy to a non-fundamental policy is not expected to affect the management of the Funds. The Board of Trustees would be able to make changes to the non-fundamental policy in the future if deemed to be in the best interests of the Funds and their shareholders. Accordingly, should Shareholders approve this Proposal, the non-fundamental policy described in Exhibit B will take effect. 20 ITEM 2 (f) - FUNDAMENTAL POLICY REGARDING UNDERWRITING OF SECURITIES CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's current fundamental policy regarding underwriting of securities.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income, International No Fund may act as an underwriter of securities of other Equity, Large Cap Index, Large Cap Disciplined Equity, issuers except as it may be deemed an underwriter in Small/Mid Cap Equity, Long Duration Bond and Extended selling a portfolio security. Duration Bond Funds
PROPOSED FUNDAMENTAL POLICY. No Fund may underwrite securities issued by other persons, except to the extent permitted under the 1940 Act, the rules and regulations thereunder or any exemption therefrom, as such statute, rules or regulations may be amended or interpreted from time to time. ANALYSIS OF PROPOSED CHANGES. Under the 1940 Act, the Funds are required to adopt a fundamental policy regarding underwriting of securities. The SEC staff generally takes the position that funds should not engage in the business of underwriting securities. It is proposed that the Funds adopt a more flexible fundamental policy. While the Funds' current fundamental policy has not affected the Funds' investments in the past, its replacement with a more flexible fundamental policy could provide investment flexibility in the future. In addition, the Board of Trustees could take appropriate and timely action to amend non-fundamental policies, without the expense and delay associated with a shareholder meeting. Accordingly, should Shareholders approve this Proposal, the fundamental policy set forth above will take effect. ITEM 2 (g) - FUNDAMENTAL POLICY REGARDING INVESTMENT IN OIL AND GAS CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's current fundamental policy regarding investment in oil and gas.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income and International No Fund may invest in interests in oil, gas, or other Equity Funds mineral exploration or development programs and oil, gas or mineral leases.
PROPOSED FUNDAMENTAL POLICY. None. However, the Board has approved a non-fundamental policy as discussed below. ANALYSIS OF PROPOSED CHANGE. The Funds' current fundamental policy is based on requirements imposed by the administrators of securities laws in various states. However, federal legislation passed in 1996 preempted substantive state regulation of mutual funds and the sale of their shares. The 1940 Act does not currently require the Funds to have a fundamental 21 policy regarding investment in oil and gas. As a result, it is proposed that the current fundamental policy be eliminated. PROPOSED NON-FUNDAMENTAL POLICY. While the Funds propose eliminating the current fundamental policy, the Board has approved that the Funds' current fundamental policy regarding investment in oil and gas be reclassified as a non-fundamental policy. By reclassifying the fundamental policy to non-fundamental, the Funds would be able to make a change to the non-fundamental policy without incurring the cost of holding a shareholder meeting. The reclassification of the Funds' current fundamental policy to a non-fundamental policy is not expected to affect the management of the Funds. Accordingly, should Shareholders approve this Proposal, the non-fundamental policy described in Exhibit B will take effect. ITEM 2 (h) - FUNDAMENTAL POLICY MAKING ALL INVESTMENT LIMITATIONS IN PROSPECTUS FUNDAMENTAL CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's fundamental policy making all investment limitations in its prospectus fundamental.
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income and International The Funds' investment limitations in their respective Equity Funds prospectuses are fundamental.
PROPOSED FUNDAMENTAL POLICY. It is proposed that the Funds' fundamental policy making the Funds' policies fundamental be eliminated. This proposed change, however, will not result in the elimination of those fundamental policies that are required to be fundamental under the 1940 Act, as described above in Items 2(a) through 2(g). ANALYSIS OF PROPOSED CHANGES. Under the 1940 Act, the Funds are not required to adopt a policy requiring that all of its investment limitations in its prospectus be classified as fundamental. Management believes that the current policy is unduly restrictive and may effectively prevent the Funds from taking advantage of new investment opportunities that are potentially beneficial to shareholders and available to other mutual funds. The proposed new policy would enable the Funds to make changes in policies in response to new market conditions or changes in the regulatory environment, subject to Board approval. If this change is approved, the Board of Trustees may take appropriate and timely action to amend, as necessary, and without the expense and delay associated with a shareholder meeting, the Funds' policies in the event any regulatory changes occur or new types of investments become available. ITEM 2 (i) - FUNDAMENTAL POLICY REQUIRING THAT AT LEAST 65% OF A FUND'S ASSETS BE INVESTED IN PARTICULAR TYPES OF SECURITIES CURRENT FUNDAMENTAL POLICY. The chart below describes each Fund's fundamental policy that requires a Fund to invest at least 65% of its assets in particular types of securities. 22
FUNDS CURRENT FUNDAMENTAL POLICY ----- -------------------------- Large Cap, Small Cap, Core Fixed Income and International No Fund may invest less than 65% of its assets in the Equity Funds types of securities described in its prospectus.
PROPOSED FUNDAMENTAL POLICY. It is proposed that the Funds' fundamental policy that requires a Fund to invest at least 65% of its assets in particular types of securities be eliminated. ANALYSIS OF PROPOSED CHANGE. Pursuant the Rule 35d-1 under the 1940 Act, a fund is required to adopt a policy to invest, under normal circumstances, at least 80% of the value of its assets in particular types of investments, in investments in a particular industry, or investments in a particular country or geographic region, as suggested by its name. This policy may either be a fundamental policy or the Fund may adopt a policy to provide Fund shareholders with at least 60 days' prior notice of any change in this policy. Each Fund has adopted a policy to invest its assets as required under the 1940 Act, and to provide Shareholders with at least 60 days' prior notice of any change to its policy. Management believes that the current policy is unduly restrictive and this policy may effectively prevent the Board of Trustees from taking appropriate and timely action to amend, as necessary, and without the expense and delay associated with a shareholder meeting, the Funds' policies in the event that any regulatory changes occur or new types of investments become available. The Funds will continue to invest their assets consistent with the requirements of Rule 35d-1. THE TRUSTEES UNANIMOUSLY RECOMMEND THAT SHAREHOLDERS VOTE "FOR" EACH ELEMENT OF PROPOSAL 2. 23 INFORMATION CONCERNING INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM PricewaterhouseCoopers LLP ("PwC") serves as the independent registered public accounting firm for the Trust. PwC conducts annual audits of the Trust's financial statements, assists in the preparation of the Trust's federal and state income tax returns and the Trust's filings with the SEC, and consults with the Trust as to matters of accounting and federal and state income taxation. During the Audit Committee's most recent consideration of whether to recommend PwC as the independent public accounting firm for the Trust, the Audit Committee considered whether the provision of any non-audit services to the Trust by PwC was compatible with maintaining their independence. Representatives of PwC are not expected to be present at the Meeting, but have been given an opportunity to make a statement if they so desire and will be available should any matter arise requiring their presence. AUDIT FEES.Meeting. The aggregate fees billed for professional services rendered for the audit of the Trust's annual financial statements for the most recent fiscal year and the review of the financial statements included in the Trust's reports to shareholders were as follows:
TRUST AND FISCAL YEAR AGGREGATE FEES --------------------- -------------- SEI Institutional Investments Trust $ 266,017 May 31, 2004
FINANCIAL INFORMATION SYSTEMS DESIGN AND IMPLEMENTATION FEES. [PwC billed $XX for the Trust's most recent fiscal year for services rendered for financial information systems design and implementation services provided to the Trust, SIMC or any entity that controls, is controlled by or is under common control with SIMC that provides services to the Trust]. ALL OTHER FEES. [PwC billed $XX for the Trust's most recent fiscal year for other services rendered to the Trust, SIMC or any entity that controls, is controlled by or is under common control with SIMC that provides services to the Trust]. GENERAL INFORMATION ABOUT THE TRUST AND OTHER MATTERS INFORMATION ABOUT OFFICERS OF THE TRUST. The chart below provides basic information about the Trust's current officers. The mailing address of each officer is One Freedom Valley Drive, Oaks, PA 19456. 24
NUMBER OF FUNDS IN THE FUND POSITION PRINCIPAL OCCUPATION COMPLEX WITH THE TERM OF OFFICE AND DURING THE TO BE NAME AND AGE TRUST LENGTH OF TIME SERVED PAST FIVE YEARS OVERSEEN ------------ ------------- --------------------- -------------------- --------- Edward D. Loughlin, President and No set term; served since 1995. Executive Vice President and 68 53 Chief President--Asset Management Executive Division of SEI Investments Officer Company since 1993. Director and President of SIMC since 2004. Chief Executive Officer of SEI Investments Fund Management and Director of SEI Investments Distribution Co. since 2003. Executive Vice President of SEI Investments Fund Management, 1994-2003. Executive Vice President of SIMC, 1994-2004. Timothy D. Barto, 36 Vice President No set term; served since 1999. General Counsel and Secretary of 68 and Secretary SIMC and SEI Investments Fund Management since 2004. Vice President of SIMC and SEI Investments Fund Management since 2001. Vice President and Assistant Secretary of SEI Investments Company since 2001. Assistant Secretary of SIMC, SEI Investments Fund Management and SEI Investments Distribution Co. and Vice President of SEI Investments Distribution Co., 1999-2003. Associate, Dechert Price & Rhoads (law firm), 1997-1999. Lydia A. Gavalis, 40 Vice President No set term; served since 1998. Vice President and Assistant 68 and Assistant Secretary of SEI Investments Company Secretary and SIMC since 1998. Assistant Secretary of SEI Investments Fund Management since 1998. Vice President of SEI Investments Fund Management and SEI Investments Distribution Co. and Assistant Secretary of SEI Investments Distribution Co., 1998-2003. Christine M. McCullough, Vice President No set term; served since 1999. Vice President and Assistant 68 43 and Assistant Secretary of SEI Investments Secretary Company since 2000. Vice President and Assistant Secretary of SIMC since 1999. Vice President and Assistant Secretary of SEI Investments Fund Management and SEI Investments Distribution Co., 1999-2003. Associate, White and Williams LLP (law firm), 1991-1999.
25
NUMBER OF FUNDS IN THE FUND POSITION PRINCIPAL OCCUPATION COMPLEX WITH THE TERM OF OFFICE AND DURING THE TO BE NAME AND AGE TRUST LENGTH OF TIME SERVED PAST FIVE YEARS OVERSEEN ------------ ------------- --------------------- -------------------- --------- William E. Zitelli, Jr., Vice President No set term; served since 2001. Assistant Secretary of SIMC and 68 36 and Assistant SEI Investments Fund Management Secretary since 2000. Vice President and Assistant Secretary of SEI Investments Company since 2000. Vice President of SIMC, SEI Investments Fund Management and SEI Investments Distribution Co. and Assistant Secretary of SEI Investments Distribution Co., 2000-2003. Vice President, Merrill Lynch & Co. Asset Management Group, 1998-2000. John Munera, 41 Vice President No set term; served since 2002. Global AML Compliance Officer at 68 and Assistant SEI Investments Company since March Secretary 2002. Middle Office Compliance Officer at SEI Investments Company, July 2000 to December 2002. Supervising Examiner at Federal Reserve Bank of Philadelphia, 1998-2000. Peter (Pedro) A. Controller and No set term; served since 2003. Director, Fund Accounting and 68 Rodriguez, 42 Chief Administration, SEI Investments Financial Global Funds Services, March Officer 1997 to April 2002 and September 2002 to present. Vice President, Fund Administration, BlackRock Financial Management, April 2002 to September 2002. John J. McCue, 41 Vice President No set term; served since 2004. Director of Portfolio 68 Implementations for SIMC, August 1995 to present. Managing Director of Money Market Investments for SIMC, January 2003 to present. Thomas D. Jones, 39 Chief No set term; served since 2004. Compliance Officer and Assistant Compliance Secretary of SIMC since March Officer 2004. First Vice President, Merrill Lynch Investment Managers (Americas), 1992 - 2004.
[TRUSTEE AND OFFICER FUND OWNERSHIP. The chart below shows the number of shares of each Fund beneficially owned by each Trustee and officer as of June 30, 2004. The Trust does 26 not have knowledge as to whether any Trustee has the right to acquire beneficially ownership of shares in a Fund. In cases where the amountpresence of a Fund owned is more than 1% of the Fund's assets, the percentage is noted. Unless otherwise noted, each Trustee and officer owns less than one percent (1%) of each Fund's shares.]
AMOUNT AND NAME AND ADDRESS NATURE OF OF BENEFICIAL BENEFICIAL FUND OWNER OWNERSHIP PERCENT OF FUND ---- ---------------- ---------- ---------------
DISTRIBUTION. SEI Investments Distribution Co., located at Oaks, Pennsylvania 19456, a wholly-owned subsidiary of SEI Investments Company, acts as the distributor of the Funds, and is an affiliate of SIMC. [FUND TRANSACTIONS. The chart below provides information about the aggregate amount of brokerage commissions paid by each Fund to an affiliated broker and the percentage of each Fund's brokerage paid to such affiliated broker as of each Fund's most recent fiscal year end.] INFORMATION BY FUND.
AGGREGATE $ BROKERAGE PERCENTAGE OF PAID TO AN BROKERAGE PAID TO AN TRUST AND FISCAL YEAR AFFILIATED BROKER AFFILIATED BROKER --------------------- --------------------- --------------------- SEI Institutional Investments Trust $ 5,481,000 36.00% May 31, 2004
[ADMINISTRATOR. SEI Investments Fund Management ("SIFM"), located at Oaks, Pennsylvania 19456, serves as the Funds' administrator and is a wholly-owned subsidiary of SEI Investments Company and an affiliate of SIMC. The chart below provides the fees paid by the Funds to SIFM for administration services.] INFORMATION BY FUND.
TRUST AND FISCAL YEAR FEES PAID TO SIFM - --------------------- ----------------- SEI Institutional Investments Trust $XX May 31, 2004
5% SHAREHOLDERS. As of August 17, 2004, the following persons were the only persons who were record owners or, to the knowledge of the Funds, were beneficial owners of 5% or more of each Fund's outstanding shares. The Funds believe that mostmajority of the shares referredof the Fund entitled to above were heldvote in person or by proxy shall constitute a quorum for the transaction of business at the Meeting for the Fund.

Abstentions and "broker non-votes" (i.e., proxies received from brokers indicating that they have not received instructions from the beneficial owner or other person entitled to vote shares) will be counted for purposes of determining whether a quorum is present at the Meeting. However, abstentions and "broker non-votes" will have the same effect as a vote "against" the Proposal. Pursuant to certain rules promulgated by the below personsNew York Stock Exchange, Inc. that govern the voting by broker-dealers, a broker-dealer holding shares of record for a beneficial owner may not exercise discretionary voting power with respect to certain non-routine matters (including the approval of investment sub-advisory agreements). It is anticipated that such broker-dealers will not have discretionary auth ority to vote on the Proposal. The absence of instructions from the beneficial owner will result in accounts for their fiduciary, agency,a "broker non-vote" with respect to the Proposal.

Adjournment

If a quorum is not present at the Meeting, or custodial customers. 27
NAME AND ADDRESS OF PERCENT OF FUND'S SHAREHOLDER NUMBER OF SHARES OWNED OUTSTANDING SHARES ----------- ---------------------- ------------------
ADJOURNMENT. In the event thatif a quorum is present but sufficient votes in favor of athe Proposal set forth in the Notice of the Special Meeting are not received by the time scheduled for the meeting,Meeting, the persons named as proxies may propose one or more adjournments of the meetingMeeting for a period or periods to permit further solicitation of proxies with respect toproxies. If a quorum is present at the Meeting, any such Proposal. Any such adjournment will require the affirmative vote of a majority of the votes cast on the question, in person or by proxy, at the session of the meetingMeeting to be adjourned. The persons named as proxies will vote in favor of adjournments with respect to a Proposal those proxies that they are entitled to vote in favor of suchthe Proposal. They will vote against any such adjournment those proxies required to be voted against any such Proposals.the Proposal. SIMC will bear the costs of any additional solicitation and any adjourned sessions. QUORUM AND REQUIRED VOTE. In order to act upon a Proposal, a quorum is required to

Voting

Shares represented by duly executed proxies will be present at the Meeting. A majority of the aggregate number of shares in a Fund entitled to votevoted at the Meeting constitutesin accordance with the instructions given. However, if no instructions are specified on the proxy with respect to the Proposal, shares will be


voted FOR the approval of the Proposal and in accordance with the judgment of the persons appointed as proxies upon any other matter that may properly come before the Meeting. If you wish to participate in the Meeting, you may submit the proxy card included with this Proxy Statement or attend in person. Your vote is important no matter how many shares you own. You can vote easily and quickly by telephone, Internet, mail or in person. Should you require additional information regarding the proxy or replacement proxy cards, you may contact SIIT at 1-800-DIAL-SEI.

Revocation

A shareholder may revoke a quorum. Any lesserpreviously submitted proxy at any time prior to the Meeting by (i) a written revocation, which must be signed and include the shareholder's name and account number, received by the Secretary of shares, however, is sufficient for adjournments. Approval of Proposal 1 requires the affirmative vote ofTrust at One Freedom Valley Drive, Oaks, Pennsylvania 19456; (ii) properly executing a majority of shares representedlater-dated proxy card; or (iii) attending the Meeting and voting in person. Attendance at the Meeting will not by itself serve to revoke a proxy.

Solicitation of Proxies, Payment of Expenses

The solicitation of proxies is required to elect Trustees. Approval of a Proposal 2 with respect to a Fund requires the affirmative vote of a majoritybeing made on behalf of the outstanding sharesBoard, who are acting on behalf of the Fund. As definedThe Fund has retained Broadridge Financial Solutions, Inc. (the "Proxy Solicitor") to aid in the 1940 Act, "majoritysolicitation. The costs of retaining the Proxy Solicitor and other expenses incurred in connection with the solicitation of proxies will be paid by SIMC. The anticipated cost associated with the solicitation of proxies by the Proxy Solicitor is approximately $52,000 plus any reasonable out-of-pocket expenses incurred by the Proxy Solicitor. Proxies may be solicited by mail, electronically, by telephone, fax, in person or by other means, and representatives of the outstanding shares" meansProxy Solicitor, SIIT, SIMC and SEI may participate in the votesolicitation of (i) 67%proxies.

SIMC will pay all expenses related to conducting this proxy, including, but not limited to, preparation, printing and mailing of this Proxy Statement and its enclosures, legal fees, and solicitation costs. SIMC estimates these costs to be approximately $80,000.

OTHER INFORMATION

Shareholders Sharing the Same Address

If two or more shareholders share the same address, only one copy of this Proxy Statement is being delivered to that address, unless SIIT has received contrary instructions from one or more of the Fund's outstanding shares presentshareholders at that shared address. Upon written or oral request, SIIT will deliver promptly a separate copy of this Proxy Statement to a shareholder at a meeting,shared address. Please note that each shareholder will receive a separate proxy card, regardless of whether he or she resides at a shared address. Please call 1-800-DIAL-SEI or forward a written request to SIIT, One Freedom Valley Drive, Oaks, Pennsylvania 19456 if you would like to (1) receive a separate copy of this Proxy Statement; (2) receive your annual reports, semi-annual reports or proxy statements separately in the holdersfuture; or (3) request delivery of more than 50%a single copy of annual reports, semi-annual reports or proxy statements if you are currently receiving multiple copies at a s hared address.

Shareholder Proposals

SIIT is organized as a business trust under the laws of the outstanding sharesCommonwealth of the Fund are present or represented by proxy, or (ii) more than 50% of the Fund's outstanding shares, whicheverMassachusetts. As such, SIIT is less. Abstentionsnot required to, and "broker non-votes" will not be counted for or against a Proposal, but will be counted for purposes of determining whether a quorum is present. Abstentions will be counted as votes present for purposes of determining a "majority of shares represented" (for Proposal 1) and "majority of the outstanding voting securities" (for Proposal 2) present at the Meeting and will therefore have the effect of counting against the Proposal to which it relates. SHAREHOLDER PROPOSALS. The Trust does not holdhave, annual shareholder meetings.meetings, except to the extent that such meetings are required under the Investment Company Act or state law. Shareholders wishingwho wish to submit proposals for inclusion in athe proxy statement for a subsequentfuture shareholder meeting should send their written proposals to the Secretary of the Trust c/o SEI Investments Management Corporation,SIIT at One Freedom Valley Drive, Oaks, Pennsylvania 19456. REPORTS TO SHAREHOLDERS. THE TRUST WILL FURNISH, WITHOUT CHARGE, A COPY OF A FUND'S MOST RECENT ANNUAL REPORT TO SHAREHOLDERS AND ITS MOST RECENT SEMI-ANNUAL REPORT SUCCEEDING 28 SUCH ANNUAL REPORT, IF ANY, UPON REQUEST. Requests19456 within a reasonable time before such meeting. Submission of a


proposal does not necessarily mean that such proposal will be included in SIIT's proxy statement since inclusion in the proxy statement is subject to compliance with certain federal regulations.

Communications to the Board

Shareholders wishing to submit written communications to the Board should be directedsend their communications to the Secretary of the Trust at One Freedom Valley Drive, Oaks, Pennsylvania 19456,19456. Any such communications received will be reviewed by the Board at its next regularly scheduled meeting.

Shares Outstanding

As of the Record Date, the net assets and the approximate number of shares issued and outstanding (rounded to the nearest whole share) for the Fund were as follows:

Name of Fund Net Assets Shares Outstanding 
U.S. Managed Volatility Fund $126,584,036   11,022,938  

Beneficial Ownership of Shares and Security Ownership of Management

As of the Record Date, the following persons were the only persons who were record owners or, to the knowledge of the Fund, were beneficial owners of 5% or more of the Fund's outstanding shares. With respect to the shares referred to in the tables below as being held of record, the Fund believes that most of these shares were held by calling 1-800-DIAL-SEI. OTHER MATTERS. the below persons in accounts for their fiduciary, agency or custodial customers.

Name and Address of Shareholder Amount of Shares Percent of
Share Class
 Nature of Ownership 
Northern Trust Company
Trustee
FBO Hospira
PO Box 92956
Chicago, IL 60675-0001
  4,240,312.446   38.47% Record 
Wells Fargo Bank NA FBO Mitsubishi Motors
NA — SIMC 80008518
PO Box 1533
Minneapolis, MN
55480-1533
  2,332,373.792   21.16% Record 
Wells Fargo Bank NA
Mitsubishi Motors
NA-STIF-20057800
PO Box 1533
Minneapolis, MN
55480-1533
  1,805,399.989   9.85% Record 
Penfirn Co
FBO 1030612866
PO Box 3327
Omaha, NE 68103-0327
  590,020.808   5.35% Record 


As of the Record Date, SIMC and its affiliates were believed to possess voting power with respect to approximately 2,076,521.39 (18.84%) of the outstanding shares (rounded to the nearest whole share) of the Fund. SIMC and its affiliates will vote any shares of the Fund over which they have voting power in the same proportion as the vote of all other shareholders of the Fund. This proportional voting may result in a small number of shareholders of the Fund determining the vote on the Proposal.

As of the Record Date, the Trustees and executive officers of the Trust, as a group, owned less than one percent (1%) of the outstanding shares of the Fund.

Other Business

The Trustees know of noBoard does not intend to present any other business to be brought beforeat the Meeting. However, ifIf any other mattersmatter may properly come before the Meeting, it is their intention that Proxies which do not contain specific restrictions to the contrary will be voted on such matters in accordance with the judgment ofor any adjournment thereof, the persons named in the enclosed formaccompanying proxy card intend to vote, act, or consent thereunder in accordance with their best judgment at that time with respect to such matters unless such proxy contains specific restrictions to the contrary.

Reports to Shareholders

For a free copy of proxy. ---------- SHAREHOLDERS ARE URGED TO COMPLETE, SIGNthe Fund's most recent annual report, shareholders of the Fund may call 1-800-DIAL-SEI or write to the Fund at One Freedom Valley Drive, Oaks, PA 19456. Although the Trust does not post its annual or semi-annual reports on the Internet, the reports can be obtained from the SEC's website by visiting http://www.sec.gov/edgar.shtml and selecting "Search for Company Filings."

The Trustees, including all of the Independent Trustees,
recommend that shareholders approve the Proposal.

PROMPT EXECUTION AND DATERETURN OF THE ENCLOSED PROXY CARD AND RETURN IT PROMPTLY. 29 [EXHIBITS] EXHIBITCARD(S) ARE REQUESTED. A - NOMINATING COMMITTEE CHARTERSELF-ADDRESSED, POSTAGE-PAID ENVELOPE IS ENCLOSED FOR YOUR CONVENIENCE. YOU MAY ALSO VOTE BY TELEPHONE OR BY LOGGING ON TO THE COMMITTEE The Nominating CommitteeINTERNET. ANY UNMARKED EXECUTED PROXIES WITHOUT INSTRUCTIONS TO THE CONTRARY WILL BE VOTED IN FAVOR OF APPROVAL OF THE PROPOSAL.


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APPENDIX A

INVESTMENT SUB-ADVISORY AGREEMENT
SEI INSTITUTIONAL INVESTMENTS TRUST

AGREEMENT made as of this _____ day of _________, 2010 between SEI Investments Management Corporation (the "Committee""Adviser") is a committee of, and established by, the Board of TrusteesLSV Asset Management (the "Board""Sub-Adviser") of SEI Liquid Asset Trust, SEI Tax Exempt Trust, SEI Daily Income Trust, SEI Index Funds, SEI Institutional Managed Trust, SEI Institutional International Trust, SEI Asset Allocation Trust and.

WHEREAS, SEI Institutional Investments Trust, (collectively, the "Trusts"a Massachusetts business trust (the "Trust"). The Committee consists of such number of members, is registered as set by the Board from time to time and its members shall be selected by the Board. The Committee shall be comprised entirely of "Independent Trustees." For purposes of this Charter, Independent Trustees shall mean members of the Board who are not interested persons of the Trusts as defined in Section 2(a)(19) ofan open-end management investment company under the Investment Company Act of 1940, as amended (the "1940 Act"). BOARD NOMINATIONS AND FUNCTIONS 1. The Committee shall select; and nominate all persons

WHEREAS, the Adviser has entered into an Investment Advisory Agreement dated June 14, 1996, as amended, (the "Advisory Agreement") with the Trust, pursuant to servewhich the Adviser acts as Independent Trustees. The Committee shall evaluate candidates' qualifications for Board membershipinvestment adviser to each series of the Trust set forth on Schedule A attached hereto (each a "Fund," and collectively, the "Funds"), as such Schedule may be amended by mutual agreement of the parties hereto; and

WHEREAS, the Adviser, with the approval of the Trust, desires to retain the Sub-Adviser to provide investment advisory services to the Adviser in connection with the management of a Fund, and the independenceSub-Adviser is willing to render such investment advisory services.

NOW, THEREFORE, the parties hereto agree as follows:

1.  Duties of such candidates from the investment advisersSub-Adviser. Subject to supervision by the Adviser and the Trust's Board of Trustees, the Sub-Adviser shall manage all of the securities and other principal service providersassets of each Fund entrusted to it hereunder (the "Assets"), including the purchase, retention and disposition of the Assets, in accordance with the Fund's investment objectives, policies and restrictions as stated in each Fund's prospectus and statement of additional information, as currently in effect and as amended or supplemented from time to time (referred to collectively as the "Prospectus"), and subject to the following:

(a)  The Sub-Adviser shall, in consultation with and subject to the direction of the Adviser, determine from time to time what Assets will be purchased, retained or sold by a Fund, and what portion of the Assets will be invested or held uninvested in cash.

(b)  In the performance of its duties and obligations under this Agreement, the Sub-Adviser shall act in conformity with the Trust's Declaration of Trust (as defined herein), Prospectus, Compliance Policies and Procedures and with the instructions and directions of the Adviser and of the Board of Trustees of the Trust and will conform to and comply with the requirements of the 1940 Act, the Internal Revenue Code of 1986 (the "Code"), and all other applicable federal and state laws and regulations, as each is amended from time to time.

(c)   The Sub-Adviser shall determine the Assets to be purchased or sold by a Fund as provided in subparagraph (a) and will place orders with or through such persons, brokers or dealers to carry out the policy with respect to brokerage set forth in a Fund's Prospectus or as the Board of Trustees or the Adviser may direct from time to time, in conformity with all federal securities laws. In executing Fund transactions and selecting brokers or dealers, the Sub-Adviser will use its best efforts to seek on behalf of each Fund the best overall terms available. In assessing the best overall terms available for any transaction, the Sub-Adviser shall consider all factors that it deems relevant, including the breadth of the market in the security, the price of the security, the financial condition and execution capability of the broker or dealer, and the reasonableness of the commission, if any, both for the fundsspecific transactio n and on a continuing basis. In evaluating the best overall terms available, and in selecting


the broker-dealer to execute a particular transaction, the Sub-Adviser may also consider the brokerage and research services provided (as those terms are defined in Section 28(e) of the Trusts. Persons selected must be independentSecurities Exchange Act of 1934 (the "Exchange Act")). Consistent with any guidelines established by the Board of Trustees of the Trust and Section 28(e) of the Exchange Act, the Sub-Adviser is authorized to pay to a broker or dealer who provides such brokerage and research services a commission for executing a portfolio transaction for a Fund which is in excess of the amount of commission another broker or dealer would have charged for effecting that transaction if, but only if, the Sub-Adviser determines in good faith that such commission was reasonable in relation to the value of the brokerage and research services provided by such broker or dealer — viewed in terms of boththat particular transaction or in terms of the letteroverall responsibilitie s of the Sub-Adviser to its discretionary clients, including a Fund. In addition, the Sub-Adviser is authorized to allocate purchase and sale orders for securities to brokers or dealers (including brokers and dealers that are affiliated with the Adviser, Sub-Adviser or the Trust's principal underwriter) if the Sub-Adviser believes that the quality of the transaction and the spiritcommission are comparable to what they would be with other qualified firms. In no instance, however, will a Fund's Assets be purchased from or sold to the Adviser, Sub-Adviser, the Trust's principal underwriter, or any affiliated person of either the Trust, Adviser, the Sub-Adviser or the principal underwriter, acting as principal in the transaction, except to the extent permitted by the Securities and Exchange Commission ("SEC") and the 1940 Act.

(d)  The Sub-Adviser shall maintain all books and records with respect to transactions involving the Assets required by subparagraphs (b)(5), (6), (7), (9), (10) and (11) and paragraph (f) of Rule 31a-1 under the 1940 Act. The CommitteeSub-Adviser shall also considerkeep the effectbooks and records relating to the Assets required to be maintained by the Sub-Adviser under this Agreement and shall timely furnish to the Adviser all information relating to the Sub-Adviser's services under this Agreement needed by the Adviser to keep the other books and records of a Fund required by Rule 31a-1 under the 1940 Act. The Sub-Adviser agrees that all records that it maintains on behalf of a Fund are property of the Fund and the Sub-Adviser will surrender promptly to a Fund any relationships beyond those delineated inof such records upon the Fund's request; provided, however, that the Sub-Adviser may retain a copy of such records. In addition, for the duration of this Agreement, the Sub-Adviser sh all preserve for the periods prescribed by Rule 31a-2 under the 1940 Act that might impair independence, E.G., business, financial or family relationships with investment advisers or service providers. 2. The Committee alsoany such records as are required to be maintained by it pursuant to this Agreement, and shall evaluatetransfer said records to any successor sub-adviser upon the qualificationstermination of and make recommendations for "interested" Trustee candidatesthis Agreement (or, if there is no successor sub-adviser, to the Board. Adviser).

(e)  The Sub-Adviser shall provide a Fund's custodian on each business day with information relating to all transactions concerning a Fund's Assets and shall provide the Adviser with such information upon request of the Adviser.

(f)  To the extent called for by the Trust's Compliance Policies and Procedures, or as reasonably requested by a Fund, the Sub-Adviser shall provide the Fund with information and advice regarding Assets to assist the Fund in determining the appropriate valuation of such Assets.

(g)  The investment management services provided by the Sub-Adviser under this Agreement are not to be deemed exclusive and the Sub-Adviser shall be free to render similar services to others, as long as such services do not impair the services rendered to the Adviser or the Trust.

(h)  The Sub-Adviser shall promptly notify the Adviser of any financial condition that is reasonably likely to impair the Sub-Adviser's ability to fulfill its commitment under this Agreement.

(i)  (i)  Except under the circumstances set forth in subsection (ii), the Sub-Adviser shall not be responsible for reviewing proxy solicitation materials or voting and handling proxies in relation


to the securities held as Assets in a Fund. If the Sub-Adviser receives a misdirected proxy, it shall promptly forward such misdirected proxy to the Adviser.

  (ii)  The Sub-Adviser hereby agrees that upon 60 days' written notice from the Adviser, the Sub-Adviser shall assume responsibility for reviewing proxy solicitation materials and voting proxies in relation to the securities held as Assets in a Fund. As of the time the Sub-Adviser shall assume such responsibilities with respect to proxies under this sub-section (ii), the Adviser shall instruct the custodian and other parties providing services to a Fund to promptly forward misdirected proxies to the Sub-Adviser.

(j)  In performance of its duties and obligations under this Agreement, the Sub-Adviser shall not consult with any other sub-adviser to a Fund or a sub-adviser to a portfolio that is under common control with a Fund concerning the Assets, except as permitted by the policies and procedures of a Fund. The Sub-Adviser shall not provide investment advice to any assets of a Fund other than the Assets.

(k)  On occasions when the Sub-Adviser deems the purchase or sale of a security to be in the best interest of a Fund as well as other clients of the Sub-Adviser, the Sub-Adviser may, to the extent permitted by applicable law and regulations, aggregate the order for securities to be sold or purchased. In such event, the Sub-Adviser will allocate securities so purchased or sold, as well as the expenses incurred in the transaction, in a manner the Sub-Adviser reasonably considers to be equitable and consistent with its fiduciary obligations to a Fund and to such other clients under the circumstances.

(l)  The Sub-Adviser shall provide to the Adviser or the Board of Trustees such periodic and special reports, balance sheets or financial information, and such other information with regard to its affairs as the Adviser or Board of Trustees may reasonably request. The Sub-Adviser shall also furnish to the Adviser any other information relating to the Assets that is required to be filed by the Adviser or the Trust with the SEC or sent to shareholders under the 1940 Act (including the rules adopted thereunder) or any exemptive or other relief that the Adviser or the Trust obtains from the SEC.

To the extent permitted by law, the services to be furnished by the Sub-Adviser under this Agreement may be furnished through the medium of any of the Sub-Adviser's partners, officers, employees or control affiliates; provided, however, that the use of such mediums does not relieve the Sub-Adviser from any obligation or duty under this Agreement.

2.  Duties of the Adviser. The Adviser shall continue to have responsibility for all services to be provided to each Fund pursuant to the Advisory Agreement and shall oversee and review the Sub-Adviser's performance of its duties under this Agreement; provided, however, that in connection with its management of the Assets, nothing herein shall be construed to relieve the Sub-Adviser of responsibility for compliance with the Trust's Declaration of Trust (as defined herein), Prospectus, Compliance Policies and Procedures, the instructions and directions of the Board of Trustees of the Trust, the requirements of the 1940 Act, the Code, and all other applicable federal and state laws and regulations, as each is amended from time to time.

3.  Delivery of Documents.The Committee may adoptAdviser has furnished the Sub-Adviser with copies of each of the following documents:

(a)  The Trust's Agreement and Declaration of Trust, as filed with the Secretary of State of the Commonwealth of Massachusetts (such Agreement and Declaration of Trust, as in effect on the date of this Agreement and as amended from time to time, specific, minimum qualifications thatherein called the Committee believes a candidate must meet before being considered"Declaration of Trust");

(b)  By-Laws of the Trust (such By-Laws, as a candidate for Board membershipin effect on the date of this Agreement and shall comply with any rules adoptedas amended from time to time, are herein called the "By-Laws"); and


(c)  Prospectus of each Fund.

4.  Compensation to the Sub-Adviser. For the services to be provided by the U.S. Securities and Exchange Commission regarding investment company nominating committeesSub-Adviser pursuant to this Agreement, the Adviser will pay the Sub-Adviser, and the nominationSub-Adviser agrees to accept as full compensation therefor, a sub-advisory fee at the rate specified in Schedule B which is attached hereto and made part of persons tothis Agreement. The fee will be considered as candidates for Board membership. 4. The Committee shall review shareholder recommendations for nominations to fill vacanciescalculated based on the Board if such recommendations are submitted in writingaverage daily value of the Assets under the Sub-Adviser's management and addressedwill be paid to the Committee atSub-Adviser monthly. For the applicable Trust's offices. The Committee shall adopt, by resolution, a policy regarding its procedures for considering candidates foravoidance of doubt, notwithstanding the Board, includingfact that the Agreement has not been terminated, no fee will be accrued under this Agreement with respect to any recommended by shareholders. COMMITTEE NOMINATIONS AND FUNCTIONS 1. The Committee hasday that the authority to make recommendations to the full Board for nomination for membership on any committeesvalue of the Board. 2. The Committee is responsible forAssets under the adoption and administration of any policy for retirement from Board membership. 3. The Committee has the authority to reviewSub-Adviser's management equals zero. Except as necessary the responsibilities of any committees of the Board, whether there is a continuing need for each committee, whether there is a need for additional committees of the Board, and whether committees shouldmay otherwise be combined or reorganized. The Committee shall make recommendations for any such action to the full Board. 4. The Committee shall, on an annual basis or at least as often as is requiredprohibited by law reviewor re gulation (including any then current SEC staff interpretation), the Sub-Adviser may, in its discretion and from time to time, waive a portion of its fee.

5.  Indemnification. The Sub-Adviser shall indemnify and hold harmless the Adviser from and against any and all claims, losses, liabilities or damages (including reasonable attorney's fees and other related expenses) howsoever arising from or in connection with the performance of the Board. Sub-Adviser's obligations under this Agreement; provided, however, that the Sub-Adviser's obligation under this Paragraph 5 shall be reduced to the extent that the claim against, or the loss, liability or damage experienced by the Adviser, is caused by or is otherwise directly related to the Adviser's own willful misfeasance, bad faith or negligence, or to the reckless disregard of its duties under this Agreement.

The Committee may inviteAdviser shall indemnify and hold harmless the Sub-Adviser from and against any and all claims, losses, liabilities or all Interested Trustees or others to participate in such reviews as it deems appropriate. OTHER POWERS AND RESPONSIBILITIES 1. The Committee shall meet at least once each year or more frequently in open or executive sessions. The Committee may invite members of management, counsel, advisers and others to attend its meetings as it deems appropriate. The Committee shall have separate sessions with management and others, as and when it deems appropriate. 2. The Committee shall have the resources and authority appropriate to discharge its responsibilities, including authority to retain special counseldamages (including reasonable attorney's fees and other expertsrelated expenses) howsoever arising from or consultants atin connection with the expenseperformance of the applicable Fund or Trust. 3. The CommitteeAdviser's obligations under this Agreement; provided, however, that the Adviser's obligation under this Paragraph 5 shall report its activitiesbe reduced to the extent that the claim against, or the loss, liability or damage experienced by the Sub-Adviser, is caused by or is otherwise directly related to the Sub-Adviser's own willful misfeasance, bad faith or negligence, or to the reckless disregard of its duties under this Agreement.

6.  Duration and Termination. This Agreement shall become effective upon approval by the Trust's Board and make such recommendations asof Trustees, approval of the Committee may deem necessary or appropriate. 4. AAgreement by a majority of the membersoutstanding voting securities of a Fund and its execution by the parties hereto.

This Agreement shall continue in effect for a period of more than two years from the date hereof only so long as continuance is specifically approved at least annually in conformance with the 1940 Act; provided, however, that this Agreement may be terminated with respect to a Fund (a) by the Fund at any time, without the payment of any penalty, by the vote of a majority of Trustees of the Committee shall constitute a quorum forTrust or by the transaction of business at any meeting of the Committee. The actionvote of a majority of the membersoutstanding voting securities of the Committee presentFund, (b) by the Adviser at any time, without the payment of any penalty, on not more than 60 days' nor less than 30 days' written notice to the Sub-Adviser, or (c) by the Sub-Adviser at any time, without the payment of any penalty, on 90 days' written notice to the Adviser. This Agreement shall terminate automatically and immediately in the event of its assignment, or in the event of a meeting at which a quorum is present shall be the actiontermination of the Committee. The Committee may meetAdvisory Agreement with the Trust. As used in person or by telephone,this Paragraph 6 , the terms "assignment" and "vote of a majority of the outstanding voting securities" shall have the respective meanings set forth in the 1940 Act and the Committeerules and regulations thereunder, subject to such exceptions as may actbe granted by the SEC under the 1940 Act.

7.  Compliance Program of the Sub-Adviser. The Sub-Adviser hereby represents and warrants that:

(a)  in accordance with Rule 206(4)-7 under the Investment Advisers Act of 1940, as amended (the "Advisers Act"), the Sub-Adviser has adopted and implemented and will maintain written consent,policies and procedures reasonably designed to prevent violation by the Sub-Adviser and its supervised persons (as


such term is defined in the Advisers Act) of the Advisers Act and the rules the SEC has adopted under the Advisers Act; and

(b)  to the extent permitted by lawthat the Sub-Adviser's activities or services could affect a Fund, the Sub-Adviser has adopted and implemented and will maintain written policies and procedures that are reasonably designed to prevent violation of the "federal securities laws" (as such term is defined in Rule 38a-1 under the 1940 Act) by the applicableFunds and the Sub-Adviser (the policies and procedures referred to in this Paragraph 7(b), along with the policies and procedures referred to in Paragraph 7(a), are referred to herein as the Sub-Adviser's "Compliance Program").

8.  Reporting of Compliance Matters.

(a)  The Sub-Adviser shall promptly provide to the Trust's by-laws. InChief Compliance Officer ("CCO") the eventfollowing documents:

  (i)  copies of all SEC examination correspondences, including correspondences regarding books and records examinations and "sweep" examinations, issued during the term of this Agreement, in which the SEC identified any concerns, issues or matters (such correspondences are commonly referred to as "deficiency letters") relating to any aspect of the Sub-Adviser's investment advisory business and the Sub-Adviser's responses thereto;

  (ii)  a report of any inconsistency betweenmaterial violations of the Sub-Adviser's Compliance Program or any "material compliance matters" (as such term is defined in Rule 38a-1 under the 1940 Act) that have occurred with respect to the Sub-Adviser's Compliance Program;

  (iii)  a report of any material changes to the policies and procedures that compose the Sub-Adviser's Compliance Program;

  (iv)  a copy of the Sub-Adviser's chief compliance officer's report (or similar document(s) which serve the same purpose) regarding his or her annual review of the Sub-Adviser's Compliance Program, as required by Rule 206(4)-7 under the Advisers Act; and

  (v)  an annual (or more frequently as the Trust's CCO may reasonably request) representation regarding the Sub-Adviser's compliance with Paragraphs 7 and 8 of this CharterAgreement.

(b)  The Sub-Adviser shall also provide the Trust's CCO with:

  (i)  reasonable read-only access to the testing, analyses, reports and other documentation, or summaries thereof, that the Sub-Adviser's chief compliance officer relies upon to monitor the effectiveness of the implementation of the Sub-Adviser's Compliance Program; and

  (ii)  reasonable access, during normal business hours, to the Sub-Adviser's facilities for the purpose of conducting pre-arranged on-site compliance related due diligence meetings with personnel of the Sub-Adviser.

9.  Governing Law. This Agreement shall be governed by the internal laws of the Commonwealth of Massachusetts, without regard to conflict of law principles; provided, however, that nothing herein shall be construed as being inconsistent with the 1940 Act.

10.  Severability. Should any part of this Agreement be held invalid by a Trust's organizational documents,court decision, statute, rule or otherwise, the remainder of this Agreement shall not be affected thereby. This Agreement shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors.


11.  Notice. Any notice, advice or report to be given pursuant to this Agreement shall be deemed sufficient if delivered or mailed by registered, certified or overnight mail, postage prepaid addressed by the party giving notice to the other party at the last address furnished by the other party:

To the Adviser at:SEI Investments Management Corporation
One Freedom Valley Drive
Oaks, PA 19456
Attention: Legal Department
To the Trust's CCO at:SEI Investments Management Corporation
One Freedom Valley Drive
Oaks, PA 19456
Attention: Russ Emery
To the Sub-Adviser at:LSV Asset Management
155 N. Wacker Drive, Suite 4600
Chicago, IL 60606
Attention: COO

12.  Amendment of Agreement. This Agreement may be amended only by written agreement of the Adviser and the Sub-Adviser and only in accordance with the provisions of the Trust's organizational documents1940 Act and the rules and regulations promulgated thereunder.

13.  Entire Agreement. This Agreement embodies the entire agreement and understanding between the parties hereto, and supersedes all prior agreements and understandings relating to this Agreement's subject matter. This Agreement may be executed in any number of counterparts, each of which shall govern. 5. The Committeebe deemed to be an original, but such counterparts shall, reviewtogether, constitute only one instrument.

In the event the terms of this CharterAgreement are applicable to more than one portfolio of the Trust (for purposes of this Paragraph 13, each a "Fund"), the Adviser is entering into this Agreement with the Sub-Adviser on behalf of the respective Funds severally and not jointly, with the express intention that the provisions contained in each numbered paragraph hereof shall be understood as appropriateapplying separately with respect to each Fund as if contained in separate agreements between the Adviser and recommendSub-Adviser for each such Fund. In the event that this Agreement is made applicable to any changesadditional Funds by way of a Schedule executed subsequent to the full Board. 6. The Committeedate first indicated above, provisions of such Schedule shall elect onebe deemed to be incorporated into this Agreement as it relates to such Fund so that, for example, the execution date for purposes of its membersParagraph 6 of this Agreement with respect to servesuch Fund shall be the execution date of the rel evant Schedule.

14.  Miscellaneous.

(a)  A copy of the Declaration of Trust is on file with the Secretary of State of the Commonwealth of Massachusetts, and notice is hereby given that the obligations of this instrument are not binding upon any of the Trustees, officers or shareholders of a Fund or the Trust.

(b)  Where the effect of a requirement of the 1940 Act or Advisers Act reflected in any provision of this Agreement is altered by a rule, regulation or order of the SEC, whether of special or general application, such provision shall be deemed to incorporate the effect of such rule, regulation or order.


IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed by their officers designated below as Chairman, whoof the day and year first written above.

SEI Investments Management CorporationLSV Asset Management
By:By:
Name:Name:
Title:Title:


Schedule A
to the
Sub-Advisory Agreement
between
SEI Investments Management Corporation
and
LSV Asset Management
As of ________ ___, 2010

SEI INSTITUTIONAL INVESTMENTS TRUST

U.S. Managed Volatility Fund


Schedule B
to the
Sub-Advisory Agreement
between
SEI Investments Management Corporation
and
LSV Asset Management
As of ________ ___, 2010

Pursuant to Paragraph 4, the Adviser shall serve until another Chairman is elected. Adopted: June 17, 2004 EXHIBIT B INVESTMENT POLICIES CHART pay the Sub-Adviser compensation at an annual rate as follows:

SEI Institutional Investments Trust

CURRENT FUNDAMENTAL PROPOSED NEW FUNDAMENTAL PROPOSED NEW NON- FUNDS POLICY POLICY FUNDAMENTAL POLICY - ----------------------------------------------------------------------------------------------------------------------------------- DIVERSIFICATION POLICY Large Cap, Small Cap, Core With respect to 75% of its assets, No
U.S. Managed Volatility Fund may purchase securities of With respect to 75% of its Fixed Income, no Fund may: (i) purchase0.25%

SEI Investments Management CorporationLSV Asset Management
By:By:
Name:Name:
Title:Title:



PROXY CARD

SEI INSTITUTIONAL INVESTMENTS TRUST

SEI INSTITUTIONAL INVESTMENTS TRUST

C/O PROXY TABULATOR

P.O. BOX 9112

FARMINGDALE, NY 11735

To Vote by Internet

1) Read the an issuer if it would causeProxy Statement and have the assets, no Fund may: (i) International Equity, securities of any issuer (except Fund to fail to satisfyproxy card below at hand.

2) Go to: www.proxyvote.com.

3) Follow the purchaseon-line instructions.

To Vote by Telephone

1) Read the securities of any Large Cap Index, Large Cap securities issued or guaranteedProxy Statement and have the proxy card below at hand.

2) Call 1-800-690-6903.

3) Follow the recorded instructions.

To Vote by diversification requirement for a issuer (except securities Disciplined Equity,Mail

1) Read the U.S. Government, its agencies or diversified management company issued or guaranteed byProxy Statement.

2) Check the Small/Mid Cap Equity, Long instrumentalities) if, as a result, underappropriate box on the 1940 Act,proxy card below.

3) Sign and date the rules or U.S. Government, its agencies Duration Bond and Extended more than 5% of its total assets regulations thereunder or any or instrumentalities) if, as a Duration Bond Funds would be investedproxy card.

4) Return the proxy card in the securities exemption therefrom, as such result, more than 5% of its of such issuer;envelope provided.

If you vote by Telephone or (ii) acquire more statute, rules or regulations may total assets would be invested than 10% of the outstanding voting be amended or interpreted from time in the securities of such securities of any one issuer. to time. issuer; or (ii) acquire more than 10% of the outstanding voting securities of any one issuer. CONCENTRATION POLICY Large Cap, Small Cap, Core No Fund may purchase any securities No Fund may concentrate investments No Fund may purchase any Fixed Income, which would cause more than 25% of in a particular industry or group securities which would cause International Equity and the total assets of the Fund to be of industries, as concentration is 25% or more of the total assets Large Cap Index Funds invested in the securities of one or defined under the 1940 Act, the of the Fund to be invested in more issuers conducting their rules and regulations thereunder or the securities of one or more principal business activities in the any exemption therefrom, as such issuers conducting their same industry, provided that this statute, rules or regulations may principal business activities limitation does not apply to be amended or interpreted from time in the same industry, provided investments in obligations issued or to time. that this limitation does not guaranteed by the U.S. Government, apply to investments in its agencies or instrumentalities. obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities. Large Cap Disciplined No Fund may purchase any securities No Fund may concentrate investments No Fund may purchase any Equity, Small/Mid Cap which would cause 25% or more of the in a particular industry or group securities which would cause Equity, Long Duration Bond total assets of the Fund to be of industries, as concentration is 25% or more of the total assets and Extended Duration Bond invested in the securities of one or defined under the 1940 Act, the of the Fund to be invested in Funds more issuers conducting their rules and regulations thereunder or the securities of one or more principal business activities in the any exemption therefrom, as such issuers conducting their same industry, provided statute, rules or principal business activities in the same industry, provided

B-1
CURRENT FUNDAMENTAL PROPOSED NEW FUNDAMENTAL PROPOSED NEW NON- FUNDS POLICY POLICY FUNDAMENTAL POLICY - ----------------------------------------------------------------------------------------------------------------------------------- that this limitation does not apply regulations may be amended or that this limitation does not to investments in obligations issued interpreted from time to time. apply to investments in or guaranteed by the U.S. obligations issued or Government, its agencies or guaranteed by the U.S. instrumentalities. Government, its agencies or instrumentalities. BORROWING POLICY AND POLICY REGARDING ISSUANCE OF SENIOR SECURITIES Large Cap Index, Large Cap Each Fund may borrow money in an No Fund may borrow money or issue Each Fund may borrow money in Disciplined Equity, amount up to 33 1/3% of the value of senior securities (as defined under an amount up to 33 1/3% of the Small/Mid Cap Equity, Long its total assets, provided that, for the 1940 Act), except to the extent value of its total assets, Duration Bond and Extended purposes of this limitation, permitted under the 1940 Act, the provided that, for purposes of Duration Bond Funds investment strategies which either rules and regulations thereunder or this limitation, investment obligate a Fund to purchase any exemption therefrom, as such strategies which either securities or require a Fund to statute, rules or regulations may obligate a Fund to purchase segregate assets are not considered be amended or interpreted from time securities or require a Fund to to be borrowings. Except where a to time. segregate assets are not Fund has borrowed money for considered to be borrowings. temporary purposes in amounts not Except where a Fund has exceeding 5% of its assets, asset borrowed money for temporary coverage of 300% is required for all purposes in amounts not borrowings. exceeding 5% of its assets, asset coverage of 300% is required for all borrowings. No Fund may issue senior securities (as defined in the 1940 Act) except as permitted by rule, regulation or order of the SEC. Large Cap, Small Cap, Core No Fund may issue any class of No Fund may borrow money or issue No Fund may issue any class of Fixed Income and senior security or sell any senior senior securities (as defined under senior security or sell any International Equity Funds security of which it is the issuer, the 1940 Act), except to the extent senior security of which it is except that a Fund may borrow from permitted under the 1940 Act, the the issuer, except that a Fund any bank, provided that immediately rules and regulations thereunder or may borrow from any bank, after any such borrowing there is any exemption therefrom, as such provided that immediately after asset coverage of at least 300% for statute, rules or regulations may any such borrowing there is all borrowings of the Fund, and be amended or interpreted from time asset coverage of at least 300% further provided that, to the extent to time. for all borrowings of the Fund, that such borrowings exceed 5% of a and further provided that, to Fund's total the extent that such borrowings exceed 5% of a Fund's total
B-2
CURRENT FUNDAMENTAL PROPOSED NEW FUNDAMENTAL PROPOSED NEW NON- FUNDS POLICY POLICY FUNDAMENTAL POLICY - ----------------------------------------------------------------------------------------------------------------------------------- assets, all borrowings shall be assets, all borrowings shall be repaid before such Fund makes repaid before such Fund makes additional investments. The term additional investments. The "senior security" shall not include term "senior security" shall any temporary borrowings that Internet, please do not not include any temporary exceed 5% of the value of such borrowings that do not exceed Fund's total assets at the time the 5% of the value of such Fund's Fund makes such temporary borrowing. total assets at the time the In addition, investment strategies Fund makes such temporary that either obligate a Fund to borrowing. In addition, purchase securities or require a investment strategies that Fund to segregate assets will not be either obligate a Fund to considered borrowings or senior purchase securities or require securities. a Fund to segregate assets will not be considered borrowings or senior securities. LENDING POLICY Large Cap, Small Cap, Core No Fund may make loans if, as a No Fund may make loans, except to No Fund may make loans if, as a Fixed Income, result, more than 33 1/3% of its the extent permitted under the 1940 result, more than 33 1/3% of its International Equity, total assets would be lent to other Act, the rules and regulations total assets would be lent to Large Cap Index, Large Cap parties, except that each Fund may: thereunder or any exemption other parties, except that each Disciplined Equity, (i) purchase or hold debt therefrom, as such statute, rules Fund may: (i) purchase or hold Small/Mid Cap Equity, Long instruments in accordance with its or regulations may be amended or debt instruments in accordance Duration Bond and Extended investment objective and policies; interpreted from time to time. with its investment objective Duration Bond Funds (ii) enter into repurchase and policies; (ii) enter into agreements; and (iii) lend its repurchase agreements; and securities. (iii) lend its securities. REAL ESTATE/COMMODITIES Large Cap, Small Cap, Core No Fund may purchase or sell real No Fund may purchase or sell No Fund may purchase or sell Fixed Income, estate, physical commodities, or commodities or real estate, except real estate, physical International Equity, commodities contracts, except that to the extent permitted under the commodities, or commodities Large Cap Index, Large Cap each Fund may purchase: (i) 1940 Act, the rules and regulations contracts, except that each Disciplined Equity, marketable securities issued by thereunder or any exemption Fund may purchase: (i) Small/Mid Cap Equity, Long companies which own or invest in therefrom, as such statute, rules marketable securities issued by Duration Bond and Extended real estate (including real estate or regulations may be amended or companies which own or invest Duration Bond Funds investment trusts), commodities, or interpreted from time to time. in real estate (including real commodities contracts; and (ii) estate investment trusts), commodities contracts relating to commodities, or commodities financial instruments, such as contracts; and (ii) commodities financial contracts relating to financial instruments, such as financial return your proxy card.

B-3
CURRENT FUNDAMENTAL PROPOSED NEW FUNDAMENTAL PROPOSED NEW NON- FUNDS POLICY POLICY FUNDAMENTAL POLICY - ------------------------------------------------------------------------------------------------------------------------------------ futures contracts and options on futures contracts and options on such contracts. such contracts. UNDERWRITING OF SECURITIES Large Cap, Small Cap, Core No Fund may act as an underwriter of No Fund may underwrite securities None. Fixed Income, securities of other issuers except issued by other persons, except to International Equity, as it may be deemed an underwriter the extent permitted under the 1940 Large Cap Index, Large Cap in selling a portfolio security. Act, the rules and regulations Disciplined Equity, thereunder or any exemption Small/Mid Cap Equity, Long therefrom, as such statute, rules Duration Bond and Extended or regulations may be amended or Duration Bond Funds interpreted from time to time. INVESTMENT IN OIL/GAS Large Cap, Small Cap, Core No Fund may invest in interests in None. No Fund may invest in interests Fixed Income and oil, gas, or other mineral in oil, gas, or other mineral International Equity Funds exploration or development programs exploration or development and oil, gas or mineral leases. programs and oil, gas or mineral leases. OTHER POLICIES Large Cap, Small Cap, Core No Fund may invest less than 65% of None. Each Fund has adopted a policy Fixed Income and its assets in the types of to invest at least 80% of its International Equity Funds securities described in its assets in the type of prospectus. securities that it is required to by Rule 35d-1. Large Cap, Small Cap, Core

Important Notice Regarding the Availability of Proxy Materials for the Special Meeting:

The Funds' investment limitations in None. None. Fixed Income and their respective prospectuses are International Equity Funds fundamental.

B-4 PROXY TABULATOR P.O. BOX 9132 HINGHAM, MA 02043-9132 TO VOTE BY TELEPHONE 1) Read the Proxy Statement and have the Proxy card on reverseis available at hand. 2) Call 1-800-690-6903. 3) Follow the recorded instructions. TO VOTE BY INTERNET 1) Read the Proxy Statement and have the Proxy card below at hand. 2) Go to www.proxyweb.com 3) Follow the on-line instructions. TO VOTE BY MAIL 1) Read the Proxy Statement. 2) Check the appropriate boxes on the reverse side. 3) Sign, date and return the Proxy card in the envelope provided. IF YOU VOTE BY TELEPHONE OR INTERNET, PLEASE DO NOT RETURN YOUR www.proxyvote.com.



SEI INSTITUTIONAL INVESTMENTS TRUST

PROXY CARD. [SHAREHOLDER ADDRESS] SHARES XXX CONTROL NUMBER XXX ACCOUNT NUMBER XXX 999 999 999 999 99 NOTICE OFFOR THE SPECIAL MEETING OF SHAREHOLDERS FUND NAME PRINTS HERE TO BE HELD ON OCTOBER 27, 2004 Notice is hereby given that a special meetingNOVEMBER 2, 2010

U.S. Managed Volatility Fund (the “Fund”)

The undersigned shareholder of shareholdersthe U.S. Managed Volatility Fund (the "Meeting"“Fund”) of SEI Institutional Investments Trust (the "Trust"(“SIIT”), hereby appoints Timothy D. Barto, Esq., Aaron C. Buser, Esq. and David F. McCann, Esq., and each of its portfolios (the "Funds") willthem, the attorneys and proxies of the undersigned, with full power of substitution, to vote, as indicated herein, all of the shares of beneficial interest of the Fund standing in the name of the undersigned at the close of business on September 3, 2010, at a Special Meeting of Shareholders to be held at the offices of SEI Investments Management Corporation ("SIMC"(“SIMC”), at One Freedom Valley Drive, Oaks, Pennsylvania 19456, at 3:00 p.m. Eastern Time, on October 27, 2004,November 2, 2010, and at [MEETING TIME] (Eastern time). The purposeany and all adjournments thereof (the “Meeting”), with all of the Meeting ispowers the undersigned would possess if then and there personally present and especially (but without limiting the general authorization and power hereby given) to considervote as indicated on the Proposals set forth on reverse and to transact such other businessproposal, as may be properly brought before the Meeting or any adjournments(s) thereof. The specifics of these Proposals, which are more fully described in the attached Proxy Statement are shownfor the Meeting.

If you sign the proxy card without otherwise indicating a vote on the proposal, the proxies will vote “FOR” the proposal listed on the reverse sideside. As to any other matter that may properly come before the Meeting, the shares will be voted by the proxies in accordance with their judgment.  The undersigned acknowledges receipt of the card. Date:_____________________, 2004 --------------------------------------------- Signature(s) (SIGNNotice of the Meeting and the Proxy Statement.

PLEASE SIGN AND DATE ON THE REVERSE SIDE.

TO VOTE, MARK BOX BELOW IN THE BOX) BLUE OR BLACK INK AS FOLLOWS:x

THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED.

SEI INSTITUTIONAL INVESTMENTS TRUST

To appoint LSV Asset Management as a sub-adviser of the Fund and to approve a sub-advisory agreement between SIMC and LSV Asset Management with respect to the Fund.

o

FOR

o

AGAINST

o

ABSTAIN

This proxy is solicited on behalf of the Board of Trustees, which unanimously recommends that shareholders vote “FOR” the proposal listed above.

Please sign, date and signreturn the proxy card promptly using the enclosed envelope.

Signature(s) should be exactly as the name or names appearappearing on this proxy card.  WhenIf shares are held jointly, each holder should sign.  If signing asis by attorney, trustee, executor, administrator, custodian,trustee or guardian, or corporate officer, please give full title.  If share are held jointly, each shareholder should sign. Please fill out box(es) as shown using black or blue ink or number 2 pencil. PLEASE DO NOT USE FINE POINT PENS. THE BOARD OF TRUSTEES OF THE TRUST RECOMMENDS A VOTE "FOR" THE PROPOSALS. By signing this proxy card, receipt of the Proxy Statement is acknowledged.

FOR nominees WITHHOLD listed (except as authority marked to the to vote for contrary at left) all nominees Proposal 1. To elect Trustees for all Funds (01) Rosemarie B. Greco (02) Nina Lesavoy / / / / (03) James M. Williams ------------------------------------------------------------------------------------------------------- To withhold authority to vote for one or more of the nominees, write the number(s) of the nominee(s) above. PROPOSAL 2 IS SEPARATED INTO SEPARATE ITEMS. YOU MAY VOTE FOR PROPOSAL 2 AS A GROUP OR BY EACH ITEM. IF YOU VOTE ON PROPOSAL 2 AS A GROUP, A FUND WILL RECORD YOUR VOTES AS HAVING BEEN CAST "FOR" OR "AGAINST" EACH APPLICABLE ITEM

Signature [PLEASE SIGN WITHIN PROPOSAL 2 IN ACCORDANCE WITH YOUR VOTE. ALTERNATIVELY, YOU MAY VOTE SEPARATELY "FOR" OR "AGAINST" EACH ITEM OF PROPOSAL 2. IF THIS PROXY CARD INCLUDES A VOTE ON PROPOSAL 2 AS A GROUP AND SEPARATE VOTES ON SPECIFIC ITEMS, YOUR VOTE ON THE ENTIRE PROPOSAL AS A GROUP WILL CONTROL AND WILL BE RECORDED AS YOUR INTENDED VOTE. PROPOSAL 2. To approve eliminating, amending or reclassifying certain / / / / / / fundamental policies and restrictions. STOP HERE IF YOU VOTED ON PROPOSAL 2 AS A GROUP. IF YOU HAVE NOT VOTED ON PROPOSAL 2 AS A GROUP AND WOULD LIKE TO VOTE ON EACH ITEM SEPARATELY, PLEASE CHECK THE APPROPRIATE BOXES BELOW. 2(a) Fundamental Policy Regarding Diversification / / / / / / 2(b) Fundamental Policy Regarding Concentration / / / / / / 2(c) Fundamental Policy Regarding Borrowing and Senior Securities / / / / / / 2(d) Fundamental Policy Regarding Lending / / / / / / BOX]

Date

Signature (Joint Owners)

Date

2(e) Fundamental Policy Regarding Purchase of Real Estate and Commodities / / / / / / 2(f) Fundamental Policy Regarding Underwriting of Securities / / / / / / 2(g) Fundamental Policy Regarding Oil and Gas / / / / / / 2(h) Fundamental Policy making all Investment Limitations in Prospectus Fundamental / / / / / / 2(i) Fundamental Policy Requiring that at Least 65% of the Fund's Assets be Invested In Particular Types of Securities. / / / / / /
PLEASE DATE, SIGN AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE.