📐 What Is Gamma Exposure (GEX)?
Gamma exposure (GEX) measures how much options market makers need to hedge as the underlying price moves. It's one of the most misunderstood but powerful concepts in market microstructure.
The Pinning Effect
When market makers have positive gamma, they are long gamma — meaning they buy when price drops and sell when price rises (hedging). This creates a stabilizing force that pins prices near the max-gamma strike.
When gamma is negative, the opposite happens — market makers sell into drops and buy into rallies, amplifying moves. This is why options expiration weeks can see explosive price action.
How to Use GEX
- Positive GEX + price near max-gamma strike: Expect pinning. Sell volatility or trade range-bound strategies.
- Negative GEX: Expect amplified moves. Buy volatility or use breakout strategies.
- GEX flip (positive → negative): Major regime change. Adjust all positions.
GEX is most useful within 3 days of a large options expiration.
Live Data
BTC Volatility Context — Live 24h
Summary
How options market makers pin prices near key strikes — or amplify breakouts. Understanding this concept is essential for interpreting the live signals and metrics on Algo Tick. The intermediate-level guide above explains the mechanics with real examples, and the live data panel shows current market conditions. For deeper analysis, explore the linked dashboards or query the raw data through the Algo Tick API.
This guide is part of the Algo Tick Learning Hub, a collection of plain-language explanations of crypto market microstructure concepts. Each guide pairs theory with live data so you can see the concepts in action. If you build trading bots or automated strategies, every metric discussed here is available programmatically via the REST API.
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