The paper develops a new realized matrix-exponential GARCH (MEGARCH) model, which uses the information of returns and realized measure of co-volatility matrix simultaneously. The paper also considers an alternative multivariate asymmetric function to develop news impact curves. We consider Bayesian MCMC estimation to allow non-normal posterior distributions. For three US financial assets, we compare the realized MEGARCH models with existing multivariate GARCH class models. The empirical results indicate that the realized MEGARCH models outperform the other models regarding in-sample and out-of-sample performance. The news impact curves based on the posterior densities provide reasonable results.

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Keywords Multivariate GARCH, Realized Measure, Matrix-Exponential, Bayesian Markov chain Monte Carlo method, Asymmetry.
Persistent URL
Series Tinbergen Institute Discussion Paper Series
McAleer, M.J. (2018). Bayesian Analysis of Realized Matrix-Exponential GARCH Models (No. TI 2018-005/III). Tinbergen Institute Discussion Paper Series. Retrieved from