International Conference on Monte Carlo techniques
Closing conference of thematic cycle

Paris July 5-8th 2016 
Campus les cordeliers
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Local volatility models enhanced with jumps.
Hamza Guennoun  1@  , Pierre Henry-Labordère  2@  
1 : Société Générale  -  Website
soci� g�rale
2 : Société Générale  -  Website
Société Générale - CIB

In this paper, we study the calibration to market call prices $C^{\mathrm{mkt}}(t,K)$ of a local volatility model enhanced with jumps. Instead of giving an exact calibration condition on the local volatility, we introduce an approximate process $S_t^{\epsilon}$ satisfying a well-defined nonlinear McKean SDE driven by a Cox process, such that $\mathbb{E}[(S^{\epsilon}_t-K)_+]$ converges to $C^{\mathrm{mkt}}(t,K)$ as $\epsilon$ goes to $0$ for all $(t,K)$. This implies that the particle method, applied to the process $S_t^{\epsilon}$, which is used for the calibration of the local volatility, converges numerically. We illustrate the accuracy of our calibration algorithm with various numerical experiments. Finally, we extend this model by allowing jump in the local volatility.



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