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General TradingG
Gamma Exposure (GEX)
Gamma Exposure (GEX) measures the total gamma held by options market makers across all strike prices. High positive GEX tends to suppress volatility as market makers hedge by selling highs and buying lows, while negative GEX can amplify price moves.
Example
“When GEX turned deeply negative ahead of options expiration, the trader anticipated increased market volatility as market makers would amplify price moves rather than dampen them.”