Finance and Financial Management Commons^™

Capm And Irrational Market: Theories And Empirical Studies, Jaehan Koh

Theses and Dissertations - UTB/UTPA

With a new interpretation of the Capital Asset Pricing Model (CAPM), this dissertation explains that the CAPM has an implied assumption of no mispricing. The CAPM should work if mispricing is removed from all assets in the market, leading to the Rational CAPM. The Rational CAPM measures value changes of the market, and then yields value changes of an asset/portfolio by employing value changes of the market in the model. For the Rational CAPM, this dissertation explains that risk, mispricing, irrationality and (investor) sentiment all indicate the same. Using the value changes from the Rational CAPM and historical dividend yields, …