Resurrecting the (C)Capm: A Cross-Sectional Test When Risk Premia are Time-Varying
Posted: 19 Nov 2001
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Resurrecting the (C)Capm: A Cross-Sectional Test When Risk Premia are Time-Varying
Abstract
This paper explores the ability of conditional versions of the CAPM and the consumption CAPM - jointly the (C)CAPM - to explain the cross section of average stock returns. Central to our approach is the use of the log consumption-wealth ratio as a conditioning variable. We demonstrate that such conditional models perform far better than unconditional specifications and about as well as the Fama-French three-factor model on portfolios sorted by size and book-to-market characteristics. The conditional consumption CAPM can account for the difference in returns between low-book-to-market and high-book-to-market portfolios and exhibits little evidence of residual size or book-to-market effects.
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