GEX Evolution is a real-time options analytics desktop application that connects to your Schwab account and computes the full dealer Greek exposure landscape ā gamma, delta, vanna, charm ā across SPX, SPY, and QQQ. It shows you why price moves: where dealers are pinned, where they're forced to chase, and how hedging flows evolve through the session.
šµ Intraday Heatmap Displays Dealer GEX, DEX, and Charm by strike. Positive GEX strikes pin price via mean-reversion hedging. Negative GEX zones amplify volatility as dealers chase. Identifies key levels and the zero-gamma line where market character flips from range-bound to trending.
šµ Hedging Curves (Black-76 & Normal SABR) Black-76 constructs a model-consistent dealer hedging curve across the vol surface. Normal SABR (β=0) captures the steep skew and smile dynamics Black-76 misses ā especially near-term. Both support SPX, SPY, and QQQ with per-symbol calibration.
šµ Greeks Grid Tabular multi-Greek dashboard with inline color-scaled bar charts by strike. Instantly see which strikes carry the heaviest combined GEX + Vanna + Charm burden.
šµ Strike Gravity Tracks the volume-weighted mean call and put strike intraday. Rising call centroid = upside reach. Falling put centroid = hedging acceleration. Per-symbol toggles for SPX, SPY, and QQQ.
GEX Evolution has been a great addition to my SPX options trading process. I use OG's GEX data on Excel spreadsheet and alongside with GEX Evolution to monitor SPX and SPY's SABR, OI, and HIRO features to better understand market maker hedging and positioning. The SPY and SPX HIRO feature is especia...