SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* CRUZ RALPH L (Last) (First) (Middle) 8050 SW 10TH STREET SUITE 4000 (Street) PLANTATION FL 33324 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol TRADESTATION GROUP INC [ TRAD ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner X Officer (give title below) Other (specify below) Co-Chairman and Co-CEO
	3. Date of Earliest Transaction (Month/Day/Year) 02/23/2006
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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	02/23/2006		S(1)		1,600	D	$15.78	7,351,965	I	Partner(2)
Common Stock	02/23/2006		S(1)		2,321	D	$15.77	7,349,644	I	Partner(2)
Common Stock	02/23/2006		S(1)		1,579	D	$15.76	7,348,065	I	Partner(2)
Common Stock	02/23/2006		S(1)		1,000	D	$15.75	7,347,065	I	Partner(2)
Common Stock	02/23/2006		S(1)		2,200	D	$15.74	7,344,865	I	Partner(2)
Common Stock	02/23/2006		S(1)		600	D	$15.73	7,344,265	I	Partner(2)
Common Stock	02/23/2006		S(1)		300	D	$15.72	7,343,965	I	Partner(2)
Common Stock	02/23/2006		S(1)		500	D	$15.71	7,343,465	I	Partner(2)
Common Stock	02/23/2006		S(1)		300	D	$15.68	7,343,165	I	Partner(2)
Common Stock								1,950,000	I	Partner(3)

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person* CRUZ RALPH L (Last) (First) (Middle) 8050 SW 10TH STREET SUITE 4000 (Street) PLANTATION FL 33324 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner X Officer (give title below) Other (specify below) Co-Chairman and Co-CEO

1. Name and Address of Reporting Person* RLCF I 1997 LTD PARTNERSHIP (Last) (First) (Middle) 5100 WESTHEIMER SECOND FLOOR UNIT 17-A (Street) HOUSTON TX 77056 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by RLCF-I 1997 Limited Partnership on October 26, 2005.

2. Shares owned by RLCF-I 1997 Limited Partnership, the 1% general partner of which is a Texas corporation that is wholly owned by Ralph L. Cruz and the limited partners of which are Ralph L. Cruz (93.594% partnership interest) and his spouse (5.406% partnership interest). RLCF-I 1997 Limited Partnership is a 10% owner of the issuer.

3. Shares owned by RLCF-II 1997 Limited Partnership, which is 100% beneficially owned by Ralph L. Cruz. This partnership engaged in no purchase or sale transactions regarding the shares.

Remarks:

	/s/ Ralph L. Cruz, individually and as President of RLCF-I GP, Inc., the general partner of RLCF-I 1997 Limited Partnership	02/27/2006
	** 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 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).
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