Asymmetric GARCH models were developped for equity stocks to take into account the larger response of the conditional … variance to negative price shocks. We show that these asymmetric GARCH models are also relevant for modelling commodity prices …

GARCH volatility models with fixed parameters are too restrictive for long time series due to breaks in the volatility … process. Flexible alternatives are Markov-switching GARCH and change-point GARCH models. They require estimation by MCMC …

. GARCH and DCC models with changing parameters are specified using the sticky infinite hidden Markov-chain framework …

We develop a Markov-switching GARCH model (MS-GARCH) wherein the conditional mean and variance switch in time from one … GARCH process to another. The switching is governed by a hidden Markov chain. We provide sufficient conditions for geometric …

metric. The methods are illustrated using an asymmetric GARCH model with a data set on a stock index in Brussels. The …

The GARCH and stochastic volatility (SV) models are two competing, well-known and often used models to explain the … simple, strongly consistent decision rules to compare the ability of the GARCH and the SV model to fit the characteristic …

We present a novel GARCH model that accounts for time varying, state dependent, persistence in the volatility dynamics …. The proposed model generalizes the component GARCH model of Ding and Granger (1996). The volatility is modelled as a … convex combination of unobserved GARCH components where the combination weights are time varying as a function of …

We consider the estimation of a large number of GARCH models, of the order of several hundreds. To achieve parsimony …

parsimony and robustness. APS is applied within a Bayesian analysis of a GARCH-mixture model which is used for the evaluation of …

In this paper we compare the incremental information content of lagged implied volatility to GARCH models of … conditional variance is modelled according to GARCH type processes. These results indicate that the implied volatility for options …