The Finite Moment Log Stable Process and Option Pricing

Peter Carr and Liuren Wu

Journal of Finance, 2003, vol. 58, issue 2, 753-777

Abstract: We document a surprising pattern in S&P 500 option prices. When implied volatilities are graphed against a standard measure of moneyness, the implied volatility smirk does not flatten out as maturity increases up to the observable horizon of two years. This behavior contrasts sharply with the implications of many pricing models and with the asymptotic behavior implied by the central limit theorem (CLT). We develop a parsimonious model which deliberately violates the CLT assumptions and thus captures the observed behavior of the volatility smirk over the maturity horizon. Calibration exercises demonstrate its superior performance against several widely used alternatives.

Date: 2003
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https://doi.org/10.1111/1540-6261.00544

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Working Paper: The Finite Moment Log Stable Process and Option Pricing (2002)
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