Haas, Markus; Mittnik, Stefan; Paolella, Marc S. - Center for Financial Studies - 2006
We present a multivariate generalization of the mixed normal GARCH model proposed in Haas, Mittnik, and Paolella (2004a). Issues of parametrization and estimation are discussed. We derive conditions for covariance stationarity and the existence of the fourth moment, and provide expressions for...