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TradeStation Securities, Inc. is a Florida corporation and the principal operating subsidiary of TradeStation Group, Inc., which is in turn wholly owned by Monex Group, Inc. (Tokyo Stock Exchange: 8698) — a Japanese online financial services group that acquired TradeStation in 2011 for roughly $411 million and delisted it from NASDAQ. The TradeStation brand traces to 1982, when the business was formed as Omega Research; TradeStation Securities itself originated as Onlinetrading.com, acquired in 2000 and renamed. Headquarters are in Plantation, Florida, with offices in New York, Chicago, Richardson (TX), London, Sydney, and Costa Rica. Monex's own reporting lists TradeStation Group at approximately 646 employees (as of March 31, 2026); it is privately held within Monex.
TradeStation Securities is a licensed U.S. securities broker-dealer and registered futures commission merchant (FCM), self-clearing equities, options, futures, and futures options. It is a member of NYSE, FINRA, SIPC, NSCC, DTC, OCC, and CME. Its core offering is the TradeStation electronic trading platform — available on desktop, web, mobile, and via API — used by active traders and certain institutional clients for order execution and for designing, testing, and automating custom trading strategies (via its EasyLanguage tooling). Related units include TradeStation Technologies, Inc. (software/intellectual property), TradeStation Prime Services (prime brokerage and securities lending), and foreign-exchange and European introducing operations.
Litigation posture: this is an operating company defending against a patent assertion entity, not an NPE. The single tracked defendant case — Chart Trading Development, LLC v. TradeStation Group, Inc. et al., filed December 3, 2015 in the Eastern District of Texas, Tyler Division (6:15-cv-01136) — placed TradeStation among roughly 32 defendants across four related suits. The three tracked plaintiff-side matters are the covered business method (CBM) review petitions TradeStation joined with CQG and Interactive Brokers at the PTAB, so its overall stance is a defensive operating company that also actively countersued at the Patent Office.
Context: Chart Trading asserted trading-interface patents ('611, '190, '416, '626, '435) against the TradeStation 9.5 Platform and similar platforms. Defendants moved to stay the district case and petitioned for CBM review; the PTAB instituted review of the '416 patent on §101 grounds and its claims were invalidated, with the Federal Circuit summarily affirming. Defense filings alleged Chart Trading was created to insulate a larger corporate owner (BGC Group), an assertion made by defendants rather than an established fact.