Abstract
This article attempts to extend the complete market option pricing theory to incomplete markets. Instead of eliminating the risk by a perfect hedging portfolio, partial hedging will be adopted and some residual risk at expiration will be tolerated. The risk measure (or risk indifference) prices charged for buying or selling an option are associated to the capital required for dynamic hedging so that the risk exposure will not increase. The associated optimal hedging portfolio is decided by minimizing a convex measure of risk. I will give the definition of risk-efficient options and confirm that options evaluated by risk measure pricing rules are indeed risk-efficient. Relationships to utility indifference pricing and pricing by valuation and stress measures will be discussed. Examples using the shortfall risk measure and average VaR will be shown.
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The work of Mingxin Xu is supported by the National Science Foundation under grant SES-0518869. I would like to thank Steven Shreve for insightful comments, especially his suggestions to extend the pricing idea from using shortfall risk measure to coherent ones, and to study its relationship to utility based derivative pricing. The comments from the associate editor and the anonymous referee have reshaped the paper into its current version. The paper has benefited from discussions with Freddy Delbaen, Jan Večeř, David Heath, Dmitry Kramkov, Peter Carr, and Joel Avrin.
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Xu, M. Risk measure pricing and hedging in incomplete markets. Annals of Finance 2, 51–71 (2006). https://doi.org/10.1007/s10436-005-0023-x
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DOI: https://doi.org/10.1007/s10436-005-0023-x
Keywords and Phrases
- Derivative pricing
- Valuation and hedging
- Incomplete markets
- Dynamic shortfall risk
- Average value-at-risk
- Utility indifference pricing
- Convex measure of risk
- Coherent risk measure
- Risk-efficient options
- Semimartingale models
- Risk indifference pricing