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, 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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(Print or Type Responses)

1. Name and Address of Reporting Person *   STONE WILLIAM C 2. Date of Event Requiring Statement (Month/Day/Year) 03/30/2010 3. Issuer Name and Ticker or Trading Symbol SS&C Technologies Holdings Inc [SSNC] (Last) (First) (Middle) C/O SS&C TECHNOLOGIES HOLDINGS, INC., 80 LAMBERTON ROAD 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman of the Board & CEO 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) WINDSOR, CT 06095 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 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 16,668,313 D   Class A Non-Voting Common Stock 637,500 D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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 of Derivative Security: 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 buy)	  (1)	05/31/2011	Common Stock	637,500	$ 0.78	D	Â
Stock Option (right to buy)	  (1)	04/08/2013	Common Stock	1,275,000	$ 1.89	D	Â
Stock Option (right to buy)	  (2)	08/09/2016	Common Stock	603,439	$ 8.77	D	Â
Stock Option (right to buy)	  (3)	08/09/2016	Common Stock	603,439	$ 8.77	D	Â
Stock Option (right to buy)	  (4)	08/09/2016	Common Stock	301,719	$ 8.77	D	Â
Stock Option (right to buy)	  (5)	02/04/2020	Common Stock	127,500	$ 14.53	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
STONE WILLIAM C C/O SS&C TECHNOLOGIES HOLDINGS, INC. 80 LAMBERTON ROAD WINDSOR, CT 06095	  X	  X	  Chairman of the Board & CEO	Â

Signatures

/s/ Stephen V.R. Whitman, attorney-in-fact for William C. Stone		03/30/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The option vested as to 25% of the shares on the first anniversary of the date of grant and 1/36 of the remaining number of shares monthly thereafter until November 23, 2005 when the option became fully vested as to 100% of the shares to the extent it was not fully vested.
(2)	The option is a "time-based" option that vested as to 25% of the shares on November 23, 2006 and as to 1/36 of the shares each month thereafter until fully vested on November 23, 2009.
(3)	The option is a "performance-based" option that vests based on the determination by the Issuer's board of directors or compensation committee as to the satisfaction of certain performance criteria for each fiscal year 2006 through 2010. In February 2009, the board of directors approved the immediate vesting of the 2006, 2007 and 2008 performance-based options that did not otherwise vest during 2006, 2007 and 2008. In addition, the performance criteria for 2009 were met, resulting in the vesting of 100% of the 2009 performance options.
(4)	The option is a "superior" option, which will become a performance-based option upon the closing of the initial public offering of the Issuer that vests based on the determination by the Issuer's board of directors or compensation committee as to the satisfaction of certain performance criteria for fiscal years 2010 and 2011.
(5)	The option vests as to 25% of the shares on February 4, 2011 and 1/36 of the remaining number of shares monthly thereafter.

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