EXHIBIT 99.1
                              MISCELLANEOUS EXHIBIT

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The undertaking set forth below is filed for purposes of incorporation by
reference into Part II of the registration statements on Form S-8, File No.
2-73997, File No. 2-75629, File No. 2-78133, File No. 2-80841, File No. 2-89659,
File No. 33-19952, File No. 33-24595, File No. 33-41602, File No. 333-41343, and
File No. 333-63709.

Item 9. Undertakings.
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          (a)       The undersigned registrant hereby undertakes:

                    Insofar as indemnification for liabilities arising under the
                    Securities Act of 1933 (the "Securities Act") may be
                    permitted to directors, officers or persons controlling the
                    registrant pursuant to the provisions described in this
                    registration statement, or otherwise, SEI Investments
                    Company (the "Company") has been advised that in the opinion
                    of the Commission such indemnification is against public
                    policy as expressed in the Securities Act and is therefore
                    unenforceable. In the event that a claim for indemnification
                    against such liabilities (other than the payment by the
                    Company of expenses incurred or paid by a director, officer
                    or controlling person of the Company in the successful
                    defense of any action, suit or proceeding) is asserted by
                    such director, officer or controlling person in connection
                    with the securities being registered, the Company will,
                    unless in the opinion of its counsel the matter has been
                    settled by controlling precedent, submit to a court of
                    appropriate jurisdiction the question whether such
                    indemnification by it is against public policy as expressed
                    in the Securities Act and will be governed by the final
                    adjudication of such issue.

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