The general case where the time specific effect in a two way model follows an arbitrary ARMA process has not been considered previously. We offer a straightforward maximum likelihood estimator for this case. Allowing for general ARMA processes raises the issue of model specification and we...

We use Bayesian techniques to select the factors in a multifactor asset pricing model when the assumption of normally distributed returns is relaxed. More precisely, we assume that asset returns are multivariate t-distributed. This setup allows us to capture the well known fat tail property of...