SEC Form 3

FORM 3

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

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1. Name and Address of Reporting Person* GUARINO CARL (Last) (First) (Middle) (Street) (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 10/01/2014	3. Issuer Name and Ticker or Trading Symbol SEI INVESTMENTS CO [ SEIC ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
COMMON STOCK	3,073	D
COMMON STOCK	400	I	For the Benefit of the Minor Child

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
STOCK OPTION (RIGHT TO PURCHASE)	(1)	10/01/2024	COMMON STOCK	10,000	36.16	D

Explanation of Responses:

1. These options have a ten-year term. Fifty percent of these options vest on December 31 of the year in which SEI attains adjusted earnings per share of $2.00 or more, and the remaining fifty percent of these options vest on December 31 of the year in which SEI attains adjusted earnings per share of $2.85 or more (based upon audited financial statements of the Company and subject to certain adjustments relating to the option expense recorded by the Company under ASC718.

	RUTH MONTGOMERY (ATTORNEY IN FACT)	10/09/2014
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (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).
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