The Genetic Optimization algorithm in 9.1 was a standout feature. Unlike brute-force optimization (which checks every combination of inputs), the genetic algorithm in 9.1 found "good enough" solutions in a fraction of the time. Many systematic traders still claim that the optimization logic in 9.1 produced more tradable, out-of-sample robust results than the later versions.
TradeStation 9.1 arrived as an evolution of the 8.x series. It represented the . It was stable, resource-efficient by modern standards, and incredibly powerful for strategy backtesting. It was the last major version before TradeStation began its heavy push toward integration with .NET and the web-based "Web Trading" interface. tradestation 9.1
// Plot for TradeStation 9.1 Plot1(VWAPVal, "VWAP"); Plot2(UpperBand, "Upper Band"); Plot3(LowerBand, "Lower Band"); The Genetic Optimization algorithm in 9
In the end, the true signal had never been in a candlestick pattern or a moving average. It was in the small accounts that mattered least to analysts: the friends kept, the apologies made, the roofs mended. TradeStation 9.1 had given him charts for them too, and for Marco that was profit enough. TradeStation 9