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Theory and Empirical Evidence
出版Centre for Economic Policy Research, 2013
URLhttp://books.google.com.hk/books?id=2WgXmQEACAAJ&hl=&source=gbs_api
註釋Using an equilibrium asset and option pricing model in a production economy under jump diffusion, we show theoretically that the aggregated excess market returns can be predicted by the skewness risk premium, which is constructed to be the difference between the physical and the risk-neutral skewness. In an empirical application of the model using more than 20 years of data on S&P500 index options, we find that, in line with theory, risk-averse investors demand risk-compensation for holding stocks when the market skewness risk premium is high. However, when we characterize periods of high and low risk aversion, we show that in line with theory, the relationship only holds when risk aversion is high. In periods of low risk-aversion, investors demand lower risk compensation, thus substantially weakening the skewness-risk-premium-return trade off.