The long memory characteristic of financial market volatility is well documentedand has important implications for … volatility forecasting and optionpricing. When fitted to the same data, different volatility models calculate theunconditional … variance differently and could have very different volatility persistentparameters. Hence, they produce very different …

In this paper, we examine the evolution of the S&P500 returns volatility around market crashes using a Markov …-Switching model. We find that volatility typically switches into the high volatility state well before a crash and remains in the high … volatility by uniformed traders result in a crash. …

The paper presents an empirical study of volatility spillover from oil prices to stock markets within an asymmetric … evidence of volatility spillover is found for all stock markets but the Swedish one, where only weak evidence is found. News … impact surfaces show that, although statistically significant, the volatility spillovers are quantitatively small. The stock …

volatility is weakest in mainland China and a possible reason for this is that Chinese retail investors do not read (traditional … the stock market volatility is compared in both the Anglophone world and the Sinophone world. I find that the stock market … volatility and the number of publicly available global news stories are strongly linked to each other in both languages …