What Is a Gamma Squeeze? How to Spot One Before It Fires

First, drop the mysticism

A "gamma squeeze" gets talked about like some mysterious force suddenly yanks a name to the moon. It's really just a mechanical hedging loop — only this time it's run to its upside extreme.

In one line:

It's the same mechanism as Long Gamma vs Short Gamma regime — just the rise-helping side of short gamma, set alight on a call wall.

What the feedback loop looks like

Retail frantically buys upside OTM calls
   → dealers sell those calls, holding short gamma
   → price rises
   → the dealers' delta gets shorter (short-gamma property)
   → they're forced to buy the underlying/futures to hedge
   → buying lifts price  ↺ back to the previous step, self-reinforcing

Note: nobody here is "turning bullish." What drives price is the dealers' hedging flow — forced buying to stay delta-neutral. Once you get that, you stop asking "who's buying?" — the answer is "the hedging machine is buying."

Before: the four conditions of squeeze soil

Before a squeeze, check whether these four hold at the same time. Missing any one, don't call it a squeeze.

Why all four are necessary:

• Call rich but no wall → no fuel stack.
• A wall but dealers are long gamma → price gets suppressed and won't squeeze at all.
• A wall with negative GEX but price is far away → the fuse isn't lit yet.

After: how it runs and how it ends

While running, it looks like this:

• After breaking the Call Wall, price doesn't look back and accelerates up;
• NET (AggDEX, magenta line) keeps printing positive with volume — mechanical buying chasing;
• GEX Trail (the 30-min trajectory of net GEX) swings violently toward negative — short gamma deepening.

How it ends (two classics):

The early-warning combo in HermesGEX

Stack these cards together and you have a squeeze-warning radar:

The unfalsifiable usage (and three traps)

We don't predict "which name rips tomorrow," only state the conditional mechanism:

That's an accounting outcome under delta-neutrality, depending on no one's view of direction. Three traps:

1. Soil ≠ a guaranteed pop. Even with all four, price may simply not break the wall and the squeeze never fires. The conditions are necessary, not sufficient.
2. Don't sell naked on a Call-rich name. Skew already tells you the upside is being bid; selling naked calls / shorting outright sits you on top of the squeeze fuel.
3. Don't chase the last leg. The ending is fast and abrupt; the final leg is the most expensive.

Test it on today's tape

To watch these four conditions live — C/P Skew, Call Wall, negative GEX, AggDEX volume — open the HuntingFlow terminal. Pro ($49/mo) gives you the full GEX regime + walls + orderflow + real options chain; Ultra ($79/mo) adds Options Order Flow and the cross-ticker correlation matrix.

Register with code HERMES50 for 50% off month one.

Further reading

• Anatomy of a Gamma Squeeze (docs) — the full pre/post mechanistic checklist
• Volatility Skew — why Call rich is the first red flag
• What Is Zero Gamma — the line dividing the damping vs amplifying universes
• Long Gamma vs Short Gamma Regime — the practical difference between the two regimes

Options and futures involve substantial risk. Hermēs provides research tools, not investment advice. See disclaimer.