This paper examines the empirical validity of the conditional capital asset pricing model (CAPM) with three betas. Specifically, having modelled the market volatility return like a GARCH (1,1) process and having defined three regimes of volatility (low, neutral and high), we find that most of...

This paper examines the empirical validity of the conditional capital asset pricing model (CAPM) with three betas. Specifically, having modelled the market volatility return like a GARCH (1,1) process and having defined three regimes of volatility (low, neutral and high), we find that most of...

What explains the cross section of expected returns for the 25 size/value Fama-French portfolios? It is found that modelling time-varying betas is important to explain the cross-section of expected returns, as well as to comply with the time series restriction on Jensen-alpha. Support for a...