Gex.live Launches Lab Tool to Backtest SPX Options Trading Rules Rigorously

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Gex.live has introduced The Lab, a browser-based backtesting tool that lets traders evaluate SPX options trading rules against an archive of over 1,000 historical sessions. Users describe a trading rule in plain text, which a compiler converts into a deterministic test run against publicly accessible session data. Each backtest costs one credit, with failed jobs receiving automatic refunds, and an optional machine-learning optimization step using LightGBM is also available. Every result is presented alongside an unconditional baseline to prevent misleading in-sample performance claims, and out-of-sample results are reported separately. Notably, the platform's own directional signals failed to hold up in testing, which the developers cite as the core reason The Lab was built.

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