Understanding Index Option Returns

Mikhail Chernov, Mark Broadie and Michael Johannes

No 6239, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: This paper studies the returns from investing in index options. Previous research documents significant average option returns, large CAPM alphas, and high Sharpe ratios, and concludes that put options are mispriced. We propose an alternative approach to evaluate the significance of option returns and obtain different conclusions. Instead of using these statistical metrics, we compare historical option returns to those generated by commonly used option pricing models. We find that the most puzzling finding in the existing literature, the large returns to writing out-of-the-money puts, is not even inconsistent with the Black-Scholes model. Moreover, simple stochastic volatility models with no risk premia generate put returns across all strikes that are not inconsistent with the observed data. At-the-money straddle returns are more challenging to understand, and we find that these returns are not inconsistent with explanations such as jump risk premia, Peso problems, and estimation risk.

Keywords: Jump risk premia; Jump-diffusion models; Options returns; Put pricing puzzle (search for similar items in EconPapers)
JEL-codes: C13 G12 G13 (search for similar items in EconPapers)
Date: 2007-05
New Economics Papers: this item is included in nep-cfn and nep-rmg
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Citations: View citations in EconPapers (11)

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Journal Article: Understanding Index Option Returns (2009)
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