VIX and European options with jumps in the short-maturity regime
Desen Guo, Dan Pirjol, Xiaoyu Wang, Lingjiong Zhu
TL;DR
This work derives leading-order short-maturity asymptotics for VIX and European option prices in local-stochastic volatility models with compound Poisson jumps, covering OTM and ATM regimes. By approximating $\mathrm{VIX}_T^2$ with $\eta^2(S_T)V_T+\kappa$ in the small-$\tau$ limit, the authors obtain closed-form limit expressions that isolate the jump components (idiosyncratic S and V, and common jumps) as the dominant drivers in the OTM regime, while diffusion dominates the ATM regime for options. They introduce and analyze three jump models—Eraker, Kou-type, and folded normal—providing explicit asymptotic predictions for European and VIX options and illustrating strong numerical agreement with MC pricing for small maturities. The results facilitate calibration and pricing of VIX derivatives in non-affine, jump-diffusion settings and demonstrate the practical relevance of jump structure in short-dated volatility products.
Abstract
We present a study of the short-maturity asymptotics for VIX and European option prices in local-stochastic volatility models with compound Poisson jumps. Both out-of-the-money (OTM) and at-the-money (ATM) asymptotics are considered. The leading-order asymptotics are obtained in closed-form. We apply our results to three examples: the Eraker model, a Kou-type model, and a folded normal model. Numerical illustrations are provided for these three examples that show the accuracy of predictions based on the asymptotic results.
