In this paper we derive the closed form solution for multistep predictions of the conditional means and their covariances from multivariate ARMA-GARCH models. These are useful e.g. in mean variance portfolio analysis when the rebalancing frequency is lower than the data frequency. In this...

A fundamental feature of the CAPM is that the investor holds individual assets within a portfolio which is mean variance efficient. In the basic CAPM of Sharp, Lintner, and Mossin, this aspect is acknowledged by stating risk margins relative to an efficient portfolio. This paper proposes a...