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Quantitative Finance · Glosario

¿Qué es Gamma swap?

Definition 14.8 Derivatives and Volatility · Capítulo 14 — Variance Swaps and Volatility Derivatives

A gamma swap pays realised variance weighted by the index level relative to its initial value, 1T∫0T(St/S0) σt2 dt\frac1T\int_0^T(S_t/S_0)\,\sigma_t^2\,dt, against a strike. It is replicated by the payoff 2S0(Sln⁡(S/S0)−S+S0)\frac2{S_0}(S\ln(S/S_0)-S+S_0), whose second derivative is 2/(S0K)2/(S_0K): its strip weights puts less than the variance swap’s.

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