Pricing Options in Incomplete Equity Markets via the Instantaneous Sharpe Ratio

Erhan Bayraktar and Virginia R. Young

Papers from arXiv.org

Abstract: We use a continuous version of the standard deviation premium principle for pricing in incomplete equity markets by assuming that the investor issuing an unhedgeable derivative security requires compensation for this risk in the form of a pre-specified instantaneous Sharpe ratio. First, we apply our method to price options on non-traded assets for which there is a traded asset that is correlated to the non-traded asset. Our main contribution to this particular problem is to show that our seller/buyer prices are the upper/lower good deal bounds of Cochrane and Sa\'{a}-Requejo (2000) and of Bj\"{o}rk and Slinko (2006) and to determine the analytical properties of these prices. Second, we apply our method to price options in the presence of stochastic volatility. Our main contribution to this problem is to show that the instantaneous Sharpe ratio, an integral ingredient in our methodology, is the negative of the market price of volatility risk, as defined in Fouque, Papanicolaou, and Sircar (2000).

Date: 2007-01, Revised 2007-07
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Citations: View citations in EconPapers (2)

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Journal Article: Pricing options in incomplete equity markets via the instantaneous Sharpe ratio (2008)
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