Calibration of the Heston Stochastic Local Volatility Model: A Finite Volume Scheme
21 Pages Posted: 26 Apr 2011 Last revised: 9 Jun 2020
Date Written: June 08, 2020
Abstract
The two most popular equity and FX derivatives pricing models in banking practice are the local volatility model and the Heston model. While the former has the appealing property that it can be calibrated exactly to any given set of arbitrage free European vanilla option prices, the latter delivers a more realistic smile dynamics. In this article we combine both modeling approaches to the Heston stochastic local volatility model. We build upon a theoretical framework that has been already developed and focus on the numerical model calibration which requires special care in the treatment of mixed derivatives and in cases where the Feller condition is not met in the Heston model leading to a singular transition density at zero volatility. We propose a finite volume scheme to calibrate the model after a suitable transformation of the model equation and demonstrate its accuracy in numerical test cases using real market data.
Keywords: Heston Stochastic Local Volatility Model, Heston Model, Local Volatility Model, Derivatives Pricing, Finite Volume Scheme
JEL Classification: G13
Suggested Citation: Suggested Citation
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