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 *   Marlene M. Ricketts 1994 Dynasty Trust 2. Date of Event Requiring Statement (Month/Day/Year) 09/09/2002 3. Issuer Name and Ticker or Trading Symbol TD AMERITRADE HOLDING CORP [AMTD] (Last) (First) (Middle) C/O J. JOE RICKETTS, TD AMERITRADE, 4211 S. 102ND ST. 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) OMAHA, NE 68127 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 8,186,112 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Marlene M. Ricketts 1994 Dynasty Trust C/O J. JOE RICKETTS, TD AMERITRADE 4211 S. 102ND ST. OMAHA, NE 68127	Â	  X	Â	Â

Signatures

/s/ Laura M. Ricketts, trustee		03/17/2006
**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).
  Remarks: The Dynasty Trust is a party to a stockholders agreement dated June 22, 2005 by and among the Dynasty Trust, J. Joe Ricketts, Marlene M. Ricketts, The Toronto-Dominion Bank and the other parties thereto (the "TD Stockholders Agreement").  Prior to the acquisition of TD Waterhouse Group, Inc. by the issuer in January 2006, the Dynasty Trust was a party to a separate stockholders agreement dated April 6, 2002 by and among the Dynasty Trust, J. Joe Ricketts, Marlene M. Ricketts and the other parties thereto (the "Datek Stockholders Agreement").  The Datek Stockholders Agreement became effective on September 9, 2002. All of the parties to the TD Stockholders Agreement are members of a Section 13(d) "group" (the "TD Group"), and all of the parties to the Datek Stockholders Agreement were members of a Section 13(d) "group" (the "Datek Group") prior to the acquisition of TD Waterhouse Group, Inc. by the issuer.  As such, the Dynasty Trust may be deemed to beneficially own the aggregate number of shares of the issuer's Common Stock held by the TD Group and, prior to the acquisition of TD Waterhouse Group, Inc. by the issuer, the Dynasty Trust may have been deemed to beneficially own the aggregate number of shares of the issuer's Common Stock held by the Datek Group.  The Dynasty Trust disclaims beneficial ownership of any shares of the issuer's Common Stock owned by the other members of either the TD Group or the Datek Group.

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