Thinkorswim is an electronic trading platform owned by Charles Schwab Corporation used to trade financial assets.

It is geared for self-directed stock, options and futures traders.

[1] Thinkorswim, Inc. was founded in 1999 by Tom Sosnoff and Scott Sheridan as an online brokerage specializing in options.

[4] In January 2009, it was acquired by TD Ameritrade in a cash and stock deal valued around $606 million.

[5][6][7] In October 2020, Charles Schwab Corporation acquired TD Ameritrade and the thinkorswim platform became available for Charles Schwab customers.