How A Gamma Squeeze Drives Market Rallies And Reversals

What a Gamma Squeeze Actually Is

At its simplest, a gamma squeeze is a rally that’s being driven by the options market more than by fundamentals. The mechanism is straightforward: traders pile into call options, and the dealers who sold those calls are typically short delta and hedge by buying the underlying as price rises. The more calls that get bought, the more underlying the dealers must buy. That buying lifts price, which pulls in more dealer hedging, which lifts price further. For a stretch, it becomes self-reinforcing.

To compensate for the rising risk, dealers also raise the price of the options themselves — meaning implied volatility climbs alongside the rally. And that combination is the tell.

The Squeeze Cycle

The squeeze plays out in stages. Click through each one to see what’s happening underneath the price action.

The Signature: Price and IV Rising Together

Normally, when an asset rallies, implied volatility tends to fall. They generally move in opposite directions. So when you see both rising at the same time, something unusual is going on — often aggressive call buying.

A Pattern That Keeps Coming Back

The 2021 meme-stock era was when this dynamic first broke into public consciousness. But the same mechanics have shown up again and again, across very different markets and regimes. The four examples below are pulled directly from posts I wrote in real time.

How They End

The mechanics that drive a gamma squeeze are the same mechanics that end it. Call premiums get more and more expensive as IV climbs, and eventually the trade stops being economical. Buying slows. Dealers no longer need to keep adding hedges. And the whole structure can unwind quickly — often violently.

The IV that was pulled higher by the squeeze collapses. Dealer hedges flip from buying to selling. And price gives back a meaningful chunk of the rally. That’s why squeeze-driven rallies tend to look so disconnected from anything fundamental on the way up and on the way down. The selling on the unwind isn’t bad news; it’s the same machinery running in reverse.

Why It Matters

Most market commentary tries to attach a fundamental story to every move. Sometimes the story is real. Often — especially in rallies that run through bad news or accelerate into events — it isn’t. The move is being driven by options-market positioning, and the giveaway is the IV chart, not the headlines.

If you’re trying to understand why a particular rally feels off — why it ignores macro, why it accelerates into events, why it doesn’t seem to “respect” technical levels — the options market is usually the place to look first.