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.
Two modes of hedging
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.
Above the flip — positive gamma. Hedging works against the move: market makers sell into rallies and buy into dips. That pushes price back toward the middle, so volatility gets squeezed. Range-bound, mean-reverting, choppy.
Below the flip — negative gamma. Hedging works with the move: market makers sell into weakness and buy into strength. That feeds the move, so volatility expands. Trending, fast, prone to follow-through.
Why it's the most important level
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.
The one-line version
Above the gamma flip, the market wants to revert. Below it, the market wants to run. The flip is the switch between the two.
How Dark Horse GEX uses it
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.
Frequently asked questions
What is the gamma flip?
The gamma flip is the price level where net market-maker gamma crosses zero and hedging switches sides. Above it, hedging dampens moves and price tends to range. Below it, hedging amplifies moves and price tends to trend.
What's the difference between positive and negative gamma?
In positive gamma (above the flip), market makers sell rallies and buy dips — squeezing volatility into range-bound, mean-reverting conditions. In negative gamma (below the flip), they sell weakness and buy strength — expanding volatility into trending, fast conditions.
Why does the gamma flip matter for trading?
Where price sits relative to the flip tells you what kind of day to expect. Fading the edges tends to suit a positive-gamma range day; following breakouts tends to suit a negative-gamma trend day. Using the wrong approach for the regime is a common way good setups still lose.
Does the gamma flip move during the day?
Yes. The flip 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 within minutes.
