. The volatility and co-volatility spillovers are examined via the news impact curves and the impulse response functions …The paper develops a novel realized matrix-exponential stochastic volatility model of multivariate returns and realized …’s seminal work in terms of the estimation of highly non-linear model specifications ("Causality tests and observationally …

framework is a bivariate volatility model, where volatility spillovers of either positive or negative sign are allowed for. Our … countries. Regarding the volatility spillovers, such spillovers from bond returns to those of stocks are stronger than the other … results show that by considering time-varying return and volatility spillovers when calculating the risk-minimising portfolio …

This study uses the Multiplicative Error Model (MEM) to explore asymmetric volatility spillovers between crude oil and … other major asset markets. We have extended the MEM of Engle et al. (2012) and ddd to include asymmetric volatility … spillovers and developed the spillover balance as well as asymmetric spillover indexes. We have then allowed these indexes to …

EGARCH model. Empirical results indicate significant return and volatility spillover effects during the full sample and the …-movements, and strong volatility persistence. During the Russian Great Recession subsample, the ownreturn effects of the markets are … partially integrated and the volatility transmission linkages across them are not that strong in crises periods, thus confirming …

Reviewing the definition and measurement of speculative bubbles in context of contagion, this paper analyses the DotCom … as an econometrics explanation and on the other hand the behavioral finance as an psychological explanation. Contagion is …. Even it is astonishing, that the contagion is lower during price bubbles, the main finding indicates the presence of …

breaks) in the volatility of financial time series. Comparative study of three techniques: ICSS, NPCPM and Cheng's algorithm … breaks in volatility, while Cheng's technique works well only when a single break occurs. …

, crude oil, gold and currency compared to commodities, bonds and real estate. Furthermore, we test the effective hedging … ability of these funds by estimating hedge ratios and optimal portfolio weights. Taking a short position in the volatility of … the funds provides impeccable hedging effectiveness for all asset classes, except currency …

This paper introduces novel volatility diffusion models to account for the stylized facts of high-frequency financial … data such as volatility clustering, intra-day U-shape, and leverage effect. For example, the daily integrated volatility of … the proposed volatility process has a realized GARCH structure with an asymmetric effect on log-returns. To further …