The gamma flip is the price level where market-maker hedging switches sides — from quietly dampening moves to actively amplifying them. It's the line between a slow range day and a fast trend day.
Market makers are constantly hedging their options books in the underlying. But how they hedge depends on which side of the gamma flip price is trading.
Where price sits relative to the gamma flip tells you what kind of day to expect — and which playbook fits. The same setup behaves differently on each side: fading the edges tends to suit a positive-gamma range day, while chasing breakouts suits a negative-gamma trend day. Trading the wrong mode for the regime is how good setups still lose.
The flip also isn't fixed. As price moves and positioning shifts through the session, the flip level moves with it — and crossing it can change the character of the tape in minutes.
Above the gamma flip, the market wants to revert. Below it, the market wants to run. The flip is the switch between the two.
Dark Horse GEX shows the gamma flip in its own sub-chart below your price — like RSI or MACD, lined up to the same time axis — so at a glance you can tell whether you're in a positive-gamma (range) or negative-gamma (trend) regime, for ES, NQ, NDX, and SPX. So before you take a setup, you know which side of the line you're on.
Not investment advice. For educational purposes only. Market maker positioning levels, not trade signals.