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A Practical Guide to GMM (with Applications to Option Pricing)Tom ArnoldUniversity of Richmond - E. Claiborne Robins School of Business Timothy Falcon CrackUniversity of Otago - Department of Finance and Quantitative Analysis October 1999 Abstract: Generalized Method of Moments (GMM) is underutilized in financial economics because it is not adequately explained in the literature. We use a simple example to explain how and why GMM works. We then illustrate practical GMM implementation by estimating and testing the Black-Scholes option pricing model using S&P 500 index options data. We identify problem areas in implementation and we give practical GMM estimation advice, troubleshooting tips, and pseudo code. We pay particular attention to proper choice of moment conditions, exactly-identified versus over-identified estimation, estimation of Newey-West standard errors, and numerical optimization in the presence of multiple extrema.
Number of Pages in PDF File: 74 Keywords: Generalized Method of Moments, GMM, Newey-West, Option Pricing, Black-Scholes JEL Classification: A23, C13, C23, G13 working papers seriesDate posted: May 10, 2001Suggested CitationContact Information
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