Multivariate GARCH models have been designed as an extension of their univariate counterparts. Such a view is appealing from a modeling perspective but imposes correlation dynamics that are similar to time-varying volatility. In this paper, we argue that correlations are quite different in...

In this paper, we propose a state-dependent sensitivity VaR (SDSVaR) to quantify the size and duration of risk spillovers among financial institutions. We permit spillover effects to change depending on the state of financial markets. We show that while small during calm times, equivalent shocks...

In this paper, we develop a state-dependent sensitivity value-at-risk (SDSVaR) approach that enables us to quantify the direction, size, and duration of risk spillovers among financial institutions as a function of the state of financial markets (tranquil, normal, and volatile). Within a system...

Multivariate GARCH models have been designed as an extension of their univariate counterparts. Such a view is appealing from a modeling perspective but imposes correlation dynamics that are similar to time-varying volatility. In this paper, we argue that correlations are quite different in...

Since the early 1970s and the seminal papers of Fama (1965, 1970), the efficient market hypothesis and its validity for several asset markets have been the topic of an uncountable number of publications in finance. The efficient market hypothesis deals with the question whether stock prices...