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Gamma measures how quickly delta changes when the underlying price moves. It is one of the key Greeks for understanding how option sensitivity evolves.
High gamma means delta can change rapidly. This is why near-dated at-the-money options can feel responsive and risky even on small price moves.
Traders watch gamma when structuring positions, while analysts use gamma surfaces to understand where sensitivity clusters across strikes and expirations.
Gamma is usually strongest near the money and grows as expiration gets closer. Deep in-the-money and far out-of-the-money options usually have much lower gamma.
That basic shape makes gamma a useful input for dealer hedging analysis and market microstructure models.
ColorVol offers a free options analyzer view for exploring gamma surfaces and connecting raw gamma behavior with dealer gamma exposure and implied volatility context.
Delta measures the current sensitivity of an option to price changes. Gamma measures how quickly that delta itself changes.
As time shrinks, at-the-money options become more sensitive to small price changes, which increases gamma.
