UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

Current Report
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

TD AMERITRADE Holding Corporation

(Exact name of registrant as specified in its charter)

Delaware		0-49992		82-0543156
(State or other jurisdiction of incorporation)		(Commission File Number)		(I.R.S. Employer Identification Number)

4211 South 102nd Street
Omaha, Nebraska		68127
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (402) 331-7856

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

þ		Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o		Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o		Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o		Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-(c))

 

 

Item  8.01 Other Events

          On February 27, TD AMERITRADE Holding Corporation and thinkorswim Group Inc. announced the expiration of the antitrust waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, with respect to the acquisition of thinkorswim by TD AMERITRADE.

Item 9.01 Financial Statements and Exhibits.

     (d) Exhibits.

99.1

Press release issued on February 27, 2009.

SIGNATURE

          Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXHIBIT INDEX

Exhibit No.		Description
99.1		Press release issued on February 27, 2009.