Sbrana, Giacomo; Poloni, Federico - In: Journal of Multivariate Analysis 120 (2013) C, pp. 152-162
We provide a closed-form estimator based on the VARMA representation for the unrestricted multivariate GARCH(1,1) model. We show that the GARCH parameters can be derived analytically, using the autocovariances of the observed data, applying simple linear algebra tools. The resulting estimator is...
