Li, Baibing; Yin, Xiangkang - 2007
classic CAPM's assumption of compete agreement among investors. To accommodate information asymmetry and belief updating, we … develop an information-adjusted CAPM, which states that the expected excess return of a risky asset/portfolio is solely … the classic CAPM, including a flatter relation between average return and market beta than the CAPM predicts, a non …