TradeStation Group Reports Monthly Business Metrics Plantation FL, July 24, 2008 – TradeStation Group, Inc. (NASDAQ GS: TRAD) today reported the following business metrics for the month ended June 30, 2008:   • 95,121 Daily Average Revenue Trades (DARTs)   • Total client assets of $1.8 billion (as of June 30, 2008)   • Average equities client credit balances of $634 million   • Average equities client margin balances of $97 million Year over year, TradeStation’s DARTs increased 21%, total client assets increased 8%, average equities client credit balances increased 17%, and average equities client margin balances increased 15%. Below in tabular format are year-over-year comparisons of those metrics on both a monthly and quarterly basis: TradeStation Securities Business Metrics   June-08 June-07 June-08 vs. June-07 Qtr Ended 6/30/08 Qtr Ended 6/30/07 Qtr Ended 6/30/08 vs. Qtr Ended 6/30/07 Trading Days 21.0 21.0 N.M. 64.0 63.0 N.M. Daily Average Revenue Trades (DARTs) 95,121 78,514 21% 91,121 71,117 28% Total Client Assets ($MM), end of period $1,801 $1,661 8% $1,801 $1,661 8% Average Equities Client Credit Balances ($MM) $634 $541 17% $623 $544 15% Average Equities Client Margin Balances ($MM) $97 $84 15% $92 $76 21% Additional information regarding the company’s business metrics can be found on TradeStation Group’s Web site at www.tradestation.com/aboutus/businessmetrics.shtm. About TradeStation Group, Inc. TradeStation Group, Inc. (NASDAQ GS: TRAD), through its principal operating subsidiary, TradeStation Securities, Inc., offers the TradeStation platform to the active trader and certain institutional trader markets. TradeStation is an electronic trading platform that offers state-of-the-art electronic order execution and enables clients to design, test, optimize, monitor and automate their own custom Equities, Options, Futures and Forex trading strategies. TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC, NSCC, DTC, OCC & NFA) is a licensed securities broker-dealer and a registered futures commission merchant, and also a member of the American Stock Exchange, Boston Options Exchange, Chicago Board Options Exchange, Chicago Stock Exchange, International Securities Exchange, NASDAQ OMX, NYSE Euronext and Philadelphia Stock Exchange. The company’s technology subsidiary, TradeStation Technologies, Inc., develops and offers strategy trading software tools and subscription services. Its London-based subsidiary, TradeStation Europe Limited, an FSA-authorized brokerage firm, introduces UK and other European accounts to TradeStation Securities. Contact — David H. Fleischman                                                     Chief Financial Officer TradeStation Group, Inc. 954-652-7000