Gamma Squeeze Explained: The Feedback Loop That Sends Price Vertical

You've probably heard "gamma squeeze" blamed for a stock going vertical. It's a real, mechanical phenomenon — not a meme — and understanding it reveals a lot about how dealer hedging can amplify a move. Here's how it works.

The setup

A gamma squeeze starts with heavy call buying. Dealers who sell those calls are now short gamma, and to stay hedged they must buy the underlying as price rises. That buying pushes price higher — which forces them to buy even more to stay hedged. The hedging feeds the move, the move forces more hedging, and a feedback loop forms. (For the underlying mechanics, see What Is Dealer Gamma Exposure?.)

Why it accelerates

The key is that dealers here are short gamma — the negative-gamma regime where hedging flows with price instead of against it. In that regime, moves self-reinforce rather than self-correct. It's the violent cousin of a negative-GEX day. A small catalyst can snowball into a vertical move because every uptick mechanically creates more buying.

Squeeze vs. short squeeze

A short squeeze is driven by short sellers covering. A gamma squeeze is driven by dealers hedging options. They often happen together — call buying plus short covering — which is why the biggest melt-ups tend to combine both forces.

How to spot the conditions

Gamma squeezes need heavy call positioning, a short-gamma dealer regime, and a catalyst. You can see the first two in the positioning data: concentrated call gamma and price below or breaking through the gamma flip. That's the setup; the catalyst provides the spark.

See the positioning live

BlackOut maps dealer gamma positioning in real time, so you can see when the conditions for an amplified move are building instead of learning about it after the candle. Get access →

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