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Gamma Exposure (GEX)

Market maker gamma positioning

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What is Gamma Exposure (GEX)?

Gamma Exposure (GEX) A measure of aggregate options market maker positioning. Positive GEX tends to suppress volatility as dealers hedge against moves. Negative GEX can amplify moves.

Complete definition

A measure of aggregate options market maker positioning. Positive GEX tends to suppress volatility as dealers hedge against moves. Negative GEX can amplify moves.

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By Ryan Silk & Lawrence Polatchek Last reviewed . Methodology is published in full.

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