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Joint Modeling of Call and Put Implied Volatility

Ahoniemi, Katja et al.
Munich Personal RePEc Archive · Reports
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This paper exploits the fact that implied volatilities calculated from identical call and put options have often been empirically found to differ, although they should be equal in theory. We propose a new bivariate mixture multiplicative error model and show that it is a good fit to Nikkei 225 index
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