What is SpotGamma Hedge Wall? The SpotGamma Hedge Wall detects a large inflection point in dealer hedging activity at this level. Why does the SpotGamma Hedge Wall matter? This can be a large area of support or resistance. How to use the SpotGamma Hedge Wall Consider playing this level as a large support or resistance area. Related articles What are Zero Gamma Levels? What is Gamma Notional? What is Volatility Trigger™? What is the SpotGamma Gamma Index? What is Call Wall Strike?