This paper analyzes the persistence or serial correlation of expected returns as well as the univariate time-series approach that studies the implied autocorrelation function of realized stock returns, including mean reversion and its conditions. In particular, we critically examine whether...

This paper uses statistical model selection criteria and Avramovs (2002) Bayesian model averaging approach to analyze the sample evidence on stock market predictability in the presence of model uncertainty. Based on Swiss stock market data, our posterior analysis finds that neither the...

In this paper we applied the model of individual choice under ambiguity proposed by Zhang (2002) in the context of the market model of asset returns of Kwon (1985). The ambiguity is introduced via unknown volatilities of assets residual leading to two factor CAPM. We test this model on US stock...