Gamma exposure (GEX) shows where options market makers will buy or sell the underlying stock to hedge their books — which often creates natural support, resistance, and acceleration zones.
Call wall (green): a strike where market makers are heavily long calls. They sell stock as price rises toward it, creating resistance.
Put wall (red): a strike where market makers are heavily short puts. They buy stock as price falls toward it, creating support.
Gamma flip: the price level where the dealer's net gamma changes sign. Above it = volatility-dampening. Below it = volatility-amplifying. Crossing it intraday often triggers explosive moves.
2D BARS sums every expiry into one chart per strike — quick read. 3D SCATTER separates each expiry on the Y-axis — deeper dive. Same data, different views.