FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * LIEB RICHARD   2. Issuer Name and Ticker or Trading Symbol SEI INVESTMENTS CO [SEIC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) ONE FREEDOM VALLEY DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 11/29/2006 (Street) OAKS, PA 19456 4. If Amendment, Date Original Filed(Month/Day/Year) 11/30/2006 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 11/29/2006   M   13,000 A $ 14.95 455,992 (1) (2) D   Common Stock 11/29/2006   G V 2,500 D $ 0 (3) 453,492 D   Common Stock               14,222 (4) I Richard B. Lieb 2004 Trust FBO Children dated 9/27/04 Common Stock               25,786 (5) I Richard B. Lieb Four Year Annuity Trust Common Stock               60,000 (6) I Richard B. Lieb 2006 Four-Year Annuity Trust dated October 13, 2006

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (right to Buy)

$ 14.95

11/29/2006

M

13,000

12/15/2005

12/16/2008

Common Stock

13,000

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LIEB RICHARD ONE FREEDOM VALLEY DRIVE OAKS, PA 19456	X

Signatures

Ruth Montgomery (Attorney in fact) for Rick Lieb		12/19/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This Amended Form 4 is being filed to restate Mr. Lieb's holdings of Common Stock as reported in his original Form 4 filed on November 30, 2006 (the "Initial Form 4"). The Initial Form 4 inadvertently failed to explain (i) the distribution of 23,924 and 14,222 Common Shares from The Richard B. Lieb Two-Year Annuity Trust (the "Two-Year Trust") to Mr. Lieb's direct holdings and to newly-created Richard B. Lieb 2004 Trust FBO Children (the "2004 Children's Trust"), respectively; (ii) the transfer of 7,563 shares of Common Stock from the Richard B. Lieb Four-Year Annuity Trust (the "Four-Year Trust") to Mr. Lieb's direct holdings; and (iii) the creation of the 2006 Four-Year GRAT ("2006 GRAT") and the transfer of 60,000 shares into this 2006 GRAT from Mr. Lieb's Direct Holdings. The Initial Form 4 also inadvertently reported the exercise of an option by Mr. Lieb to purchase 13,000 shares of Common Stock as an acquisition of such options (instead of a disposition) on Table II.
(2)	This number reflects an increase of 31,487 shares due to the transfer of 23,924 shares into Mr. Lieb's direct holdings from the Two-Year Trust and the transfer of 7,563 shares into Mr. Lieb's direct holdings from the Four-Year Trust, each of which occurred on September 28, 2006.
(3)	Not applicable. Gift Transfer
(4)	The 2004 Children's Trust was created on September 27, 2004 and received an initial grant of 14,222 shares from the Two-Year Trust on September 28, 2006.
(5)	This number reflects a decrease of 7,563 shares due to the grant of such shares from the Four-Year Trust to Mr. Lieb's direct holdings on September 28, 2006.
(6)	The 2006 GRAT was created on October 13, 2006 and received an initial grant of 60,000 shares from Mr. Lieb's direct holdings.

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