Starting today, weβre adding Spot Zone Stability to GEXfocus, a new layer designed to measure how stable, sensitive, or fragile the gamma structure is around the current price and the most relevant levels of the session.
The main reading focuses on the strike closest to spot, but we also apply the same logic across the Ladder, evaluating key levels such as Call Wall, Call GEX Wall, Max Gamma, Gamma Flip, Zero Gamma, FEP, Put GEX Wall, and Put Wall. This helps users not only see where the important levels are, but also understand how reliable they may be during the session.
To calculate this, we use current gamma and its main sensitivities: Speed, to measure how much gamma can change when price moves; Zomma, to measure the impact of changes in implied volatility; and Color, to measure how gamma evolves or decays as intraday time passes.
The scale goes from 0 to 100:
0β30: stable zone.
30β60: sensitive zone.
60β100: fragile zone.
This indicator is not designed to predict direction. Its purpose is to improve the reading of market structure by helping identify which gamma zones remain reliable and which ones may lose strength, migrate, or become less relevant quickly due to small changes in price, IV, or time.