Company:  SEI INSTITUTIONAL MANAGED ... (SAAAX)
Form Type:  485APOS
Filing Date:  2/22/2006 
CIK:  0000804239 
Address:  2 OLIVER ST 
City, State, Zip:  BOSTON, Massachusetts 02109 
Telephone:  (800) 345-5734 
Fiscal Year:  09/30 
Last Trade
Last Trade: 
N/A  
Change: 
N/A  
Trade Time: 
 
Market Cap: 
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  FORM 485APOS
      Investment Adviser:
      SEI INVESTMENTS MANAGEMENT CORPORATION
      Investment Sub-Advisers:
      Investment Strategy
      What are the Risks of Investing in the Fund?
      Performance Information
      Fund Fees and Expenses
        OPERATING EXPENSES
      Investment Strategy
      What are the Risks of Investing in the Fund?
      Performance Information
      Fund Fees and Expenses
        OPERATING EXPENSES
      Investment Adviser and Sub-Advisers
      Pricing of Fund Shares
      Frequent Purchases and Redemptions of Fund Shares
      Dividends, Distributions and Taxes
      Dividends and Distributions
      Financial Highlights
      Investment Adviser
      SEI Investments Management Corporation
      INVESTMENT OBJECTIVES AND POLICIES
      DESCRIPTION OF PERMITTED INVESTMENTS AND RISK FACTORS
      Portfolio Management.
      TRUSTEES AND OFFICERS OF THE TRUST
        TRUSTEE OWNERSHIP
        COMPENSATION TABLE
      PURCHASE AND REDEMPTION OF SHARES
      PORTFOLIO TRANSACTIONS
      CODES OF ETHICS
      CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES
    PART C. OTHER INFORMATION
      Item 23. Exhibits:
      Item 24. Persons Controlled by or under Common Control with ...
      Item 25. Indemnification:
      Item 26. Business and Other Connections of Investment Adviser:
      SEI Investments Management Corporation
        NAME AND TITLE
        NAME AND TITLE
        NAME AND TITLE
        NAME AND TITLE
      Item 27. Principal Underwriters:
        NAME AND TITLE
      Item 28. Location of Accounts and Records:
      Item 29. Management Services:
      Item 30. Undertakings:
    SIGNATURES
    EXHIBIT INDEX