Hostname: page-component-77c78cf97d-9lb97 Total loading time: 0 Render date: 2026-04-23T16:02:43.133Z Has data issue: false hasContentIssue false

Multivariate Simultaneous Generalized ARCH

Published online by Cambridge University Press:  11 February 2009

Robert F. Engle
Affiliation:
University of California, San Diego
Kenneth F. Kroner
Affiliation:
University of Arizona

Abstract

This paper presents theoretical results on the formulation and estimation of multivariate generalized ARCH models within simultaneous equations systems. A new parameterization of the multivariate ARCH process is proposed, and equivalence relations are discussed for the various ARCH parameterizations. Constraints sufficient to guarantee the positive definiteness of the conditional covariance matrices are developed, and necessary and sufficient conditions for covariance stationarity are presented. Identification and maximum likelihood estimation of the parameters in the simultaneous equations context are also covered.

Information

Type
Articles
Copyright
Copyright © Cambridge University Press 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable