What Is Gamma Exposure, Actually?

Gamma exposure (GEX) is a map of how options dealers must hedge as the underlying moves. When the street is long gamma, hedges lean against the move — chop. When the street is short gamma, hedges chase — trend and squeeze fuel.

The one-line model

Dealers who sold calls (or puts) carry the opposite gamma of the customer. As price rises into a call wall, long-gamma dealers sell futures into strength. As price falls through a put wall in a short-gamma regime, they sell into weakness. That flow is what GEX tries to estimate.

Why the flip matters

The gamma flip is the strike (or spot level) where aggregate dealer GEX crosses zero. Above it, expect mean reversion into walls. Below it, expect acceleration. Γ-LAB’s console paints that level as an instrument readout — not a crystal ball.

How to use it (safely)

1. Note flip, call wall, and put wall for the index or name you trade.
2. Ask: am I trading with dealer hedges or against them?
3. Rehearse the setup on paper before sizing premium.

Stock Picks is the rehearsal desk we recommend — free, options-capable, no live risk.

Caveats

GEX is a model, not a quote. Open interest, dealer vs. customer assumptions, and expirations all shift the map. Treat the console as a lab instrument: calibrate, cross-check, then act.