The Effects of Asymmetric Volatility and Jumps on the Pricing of VIX Derivatives
53 Pages Posted: 21 Sep 2015
Date Written: September 11, 2015
This paper proposes a new collection of affine jump-diffusion models for the valuation of VIX derivatives. The models have two distinctive features. First, we allow for a positive correlation between changes in the VIX and in its stochastic volatility to accommodate asymmetric volatility. Second, upward and downward jumps in the VIX are separately modeled to accommodate the possibility that investors react differently to good and bad surprises. Using the VIX futures and options data from July 2006 through January 2013, we find conclusive evidence for the benefits of including both asymmetric volatility and upward jumps in models of VIX derivatives pricing. We do not, however, find evidence supporting downward jumps.
Keywords: VIX options, VIX futures, jump-diffusion, stochastic volatility, volatility smile
JEL Classification: G12, G13
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