What is a gamma squeeze, and how is it different from a short squeeze?
By Maya Koeva · June 30, 2026 · 2 min read
A short squeeze gets all the attention, but a lot of the violent, one-day melt-ups you see are really a different mechanic: a gamma squeeze. It is driven by options, not by short sellers, and once you understand the loop you will spot it a mile off.
First, who has to hedge
When you buy a call option, someone sells it to you, usually a market maker. They do not want a directional bet, so they hedge by buying some of the underlying stock. The further the stock rises toward the strike, the more shares they have to hold to stay neutral. That sensitivity is the "gamma."
The loop
Now imagine heavy call buying on one name. Market makers buy stock to hedge. That buying pushes the price up. A higher price forces them to buy even more to stay hedged, which pushes the price up again, which forces more buying. Like a short squeeze, it is a feedback loop of forced buyers, just triggered by options dealers instead of trapped shorts.
How it differs from a short squeeze
- Short squeeze: short sellers are forced to buy back shares to cut losses.
- Gamma squeeze: option market makers are forced to buy shares to stay hedged.
They often happen together: a heavily shorted stock with a wall of call buying can light both fuses at once. But the gamma part is faster and more violent, and it is tied to specific strikes and expiry dates.
Why it burns out fast
A gamma squeeze is mechanical, not fundamental. The buying is forced, not convinced. When the options expire, get sold, or the price stalls below the next strike, the hedging unwinds and the same dealers who were buying become sellers. Moves built this way tend to give back most of the gain about as fast as they made it.
How it shows up in the signals
A gamma squeeze leaves fingerprints in the conversation: a sudden, lopsided spike in bullish mentions, lots of talk about specific strikes and expiry dates, and "free money" urgency. The sentiment goes euphoric and one-sided almost overnight. That intensity is exactly what makes it dangerous: the crowd is loudest right as the fuel is about to run out.
The bottom line
A gamma squeeze is a feedback loop of forced hedging, not a verdict on a company. It can be spectacular and it can reverse in a session. If you see a name rip on heavy call buying and runaway bullish chatter, understand the mechanic you are looking at before you chase it.
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