【Abstract】
Classic CAPM has long been criticized for errors in explaining the equity premium. This paper shows that one part of the inaccuracy comes from the quality of the risk measurement. Empirical evidence from the Chinese A-share stock market shows a single-factor model using the Aumann-Serrano riskiness index (the AS index) dominates both the CAPM and Fama-French three-factor model. This is because the AS index captures information of higher-order moments in the systematic risk that is neglected in traditional asset pricing models. This paper also suggests that the momentum factor is significantly correlated to the AS index and this relationship is of complementary nature rather than perfect substitutes.
【Keywords】
Premium, Aumann-Serrano Riskiness Index, CAPM, Stock
【Authors】
Gang Jianhua, Research Fellow of IMI, China Financial Policy Research Center & School of Finance, Renmin University of China
Qian Zongxin, Research Fellow of IMI, China Financial Policy Research Center & School of Finance, Renmin University of China
Chen Fan, Tepper School of Business, Carnegie Mellon University, Pittsburgh, PA, USA