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10-K - FORM 10-K - TD AMERITRADE HOLDING CORPc54631e10vk.htm
EX-31.1 - EX-31.1 - TD AMERITRADE HOLDING CORPc54631exv31w1.htm
EX-31.2 - EX-31.2 - TD AMERITRADE HOLDING CORPc54631exv31w2.htm
EX-32.1 - EX-32.1 - TD AMERITRADE HOLDING CORPc54631exv32w1.htm
EX-23.1 - EX-23.1 - TD AMERITRADE HOLDING CORPc54631exv23w1.htm
EX-10.33 - EX-10.33 - TD AMERITRADE HOLDING CORPc54631exv10w33.htm
Exhibit 21.1
Subsidiaries of the Registrant
     
Subsidiary   State or Other Jurisdiction of Domicile
Ameritrade Advisory Services, LLC
  Delaware
Ameritrade International Company, Inc.
  Cayman Islands
Amerivest Investment Management, LLC
  Delaware
Datek Online Management Corp.
  Delaware
Financial Passport, Inc.
  Delaware
Futures Forex Trading LLC
  Delaware
Investools Inc.
  Utah
Prophet Financial Systems, Inc.
  California
T2 API Technologies, LLC
  Delaware
TD AMERITRADE Clearing, Inc.
  Nebraska
TD AMERITRADE, Inc.
  New York
TD AMERITRADE IP Company, Inc.
  Delaware
TD AMERITRADE Online Holdings Corp.
  Delaware
TD AMERITRADE Services Company, Inc.
  Delaware*
TD AMERITRADE Trust Company
  Maine
TD Waterhouse Canadian Call Center, Inc.
  Canada
TD Waterhouse Capital Markets, Inc.
  Delaware
TenBagger, Inc.
  Nevada
thinkorswim Advisors, Inc.
  Illinois
thinkorswim Australia Pty Ltd.
  Australia
thinkorswim Group Inc.
  Delaware
thinkorswim Holdings Inc.
  Delaware
thinkorswim Singapore Pte Ltd.
  Singapore
thinkorswim Technologies, Inc.
  Delaware
thinkorswim Inc.
  Delaware
ThinkTech, Inc.
  Delaware**
tos RED, Inc.
  Delaware
tos Services, Inc.
  Delaware
TOS Trading LLC
  Delaware
TradeBridge, Inc.
  Maryland
 
*   In Texas this entity does business as Ameritrade Support Services Corporation
 
**   In Texas this entity does business as T2 Technology Support, Inc.
Unless otherwise noted, each subsidiary does business under its actual name.