Abstract
We study a rational valuation and hedging principle for contingent claims which integrate tradable and non-tradable sources of risk. The principle is based on the preferences of a rational investor with constant absolute risk aversion, and uses exponential utility-indifference arguments. Properties of this valuation and of a corresponding hedging strategy are analyzed in a general semi-martingale market framework. To obtain further constructive results and properties, a more specific class of semi-complete product models is studied in detail. This yields a computation scheme, simple valuation bounds, and results on diversification and information effects.
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