Standard approaches to the estimation and testing of conditional CAPM models with time-varying or random beta have ignored the potential panel nature of financial data. We test for whether or not homogeneity restrictions on the time-variation component of multifactor betas and on the slope...

Traditional methods of modelling returns and testing the Capital Asset Pricing Model (CAPM) do so at the mean of the conditional distribution. Instead, we model returns and test whether the conditional CAPM holds at other points of the distribution by utilizing the technique of quantile...