Exhibit 10.29.12

AMENDMENT NO. 12

TO

CAPITAL SUPPORT AGREEMENT

THIS AMENDMENT NO. 12 (the “Amendment”) to the Capital Support Agreement,
effective as of the 7th day of November 2008 (the “Amendment Effective Date”),
between SEI Liquid Asset Trust (the “Trust”) on behalf of its Prime Obligation
Fund (the “Fund”) and SEI Investments Company (the “Support Provider”).

WHEREAS:

 

  1. The parties hereto entered into a Capital Support Agreement, dated as of
December 3, 2007, and amended February 15, 2008, March 5, 2008, March 10,
2008, March 24, 2008, March 26, 2008, March 31, 2008, April 17, 2008, June 18,
2008, July 22, 2008, July 28, 2008 and July 30, 2008 (the “Agreement”); and

 

  2. The parties hereto desire to amend the Agreement on the terms and subject
to the conditions provided herein.

NOW THEREFORE, in consideration of the premises, covenants, representations and
warranties contained herein and intending to be legally bound hereby, the
parties hereto agree as follows:

 

1. Unless otherwise expressly provided herein, capitalized terms shall have the
meanings assigned to them in the Agreement.

 

2. Section 1(e) of the Agreement is hereby deleted in its entirety and replaced
as set forth below:

“Letter of Credit” means one or more letters of credit issued by the Letter of
Credit Provider for the benefit of the Fund in an aggregate amount equal to
twenty-five million dollars ($25,000,000), and which shall terminate no sooner
than the date set forth in Section 3(c)(iv) of this Agreement.

 

3. Section 1(g) of the Agreement is hereby deleted in its entirety and replaced
as set forth below:

“Maximum Contribution Amount” means twenty-five million dollars ($25,000,000).

 

4. Section 1(n) is hereby deleted in its entirety and replaced as set forth
below:

“Segregated Account” means an account established by the Support Provider for
the benefit of the Fund at a bank which is a qualified custodian under the 1940
Act, which may be an interest-bearing account and/or which account’s assets may
be invested into money market instruments, and which during the term of the
Agreement (i) shall hold cash or cash equivalent securities in an amount equal
to the difference, if any, between the amount of the Letter of Credit and the
Maximum Contribution Amount, and (ii) the assets of which shall be available to
the Fund by means of ACH transfer initiated by the Fund without the requirement
of further action or consent by the Support Provider; provided, however, that
the amount required to be maintained in the Segregated Account may be reduced as
set forth in Section 3 of the Agreement.

 

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IN WITNESS WHEREOF, the parties caused this Amendment No. 12 to the Capital
Support Agreement to be executed and to become effective as of the date first
written above.

 

SEI INVESTMENTS COMPANY By:   /s/ Dennis J. McGonigle Name:   Dennis J.
McGonigle Title:   Chief Financial Officer Date:   November 7, 2008

 

ADDRESS FOR NOTICES:

One Freedom Valley Drive

Oaks, PA 19456

SEI LIQUID ASSET TRUST on behalf of its

PRIME OBLIGATION FUND

By:   /s/ Timothy D. Barto Name:   Timothy D. Barto Title:   Vice President
Date:   November 7, 2008 ADDRESS FOR NOTICES:

One Freedom Valley Drive

Oaks, PA 19456

 

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