The Gamma Flip, Explained

Options dealers hold large inventories of contracts and hedge the directional risk of those positions in the underlying. Gamma measures how quickly that hedging need changes as price moves. When you sum dealer gamma across every strike in the live options chain, the total changes sign somewhere: the gamma flip is the price at which that aggregate figure crosses from positive to negative.

Above the flip, dealers are typically net long gamma. Hedging that inventory means selling into strength and buying into weakness, which tends to dampen realised moves. Below the flip, dealers are typically net short gamma, so hedging runs the other way — selling into weakness and buying into strength — which tends to amplify moves. The flip is simply the boundary between those two mechanical regimes, which is why it is often called the zero-gamma level.

The gamma flip is useful because it labels the character of the hedging environment on either side of a single price. It describes where dealer flows are more likely to compress ranges versus where they are more likely to extend them. That is descriptive context about positioning, not a prediction: price frequently trades cleanly through the flip, and the level itself gives no indication of direction, timing, or magnitude. Trading around any such level carries the substantial risk of loss present in any market.

In GEX Levels the flip is computed from the live options chain and drawn directly on the chart alongside related levels. Because it is a snapshot of current positioning, it goes stale as the chain changes, so the indicator refreshes it each session. Some frameworks also distinguish a separate vol trigger, or zero-gamma level, calculated on a slightly different basis; in practice the two often sit close together and both mark roughly where the dampen-versus-amplify balance shifts.