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This paper decomposes the overall market beta of common stocks into four parts reflecting uncertainty related to the long-run dynamics of stock-specific and market-wide cash flows and discount rates. We employ a discrete time version of Merton's intertemporal capital asset pricing model to test whether these four sources of risk command different risk prices. The model performs well in pricing average returns on single- and double-sorted portfolios according to size, book-to-market, dividend-price ratios and past risk. It generates high estimates for the explained cross-sectional variation in average returns, lower average pricing errors than the Fama–French three-factor model and economically and statistically acceptable estimates for the coefficient of relative risk aversion.
Koubouros et al. (Sat,) studied this question.