growth rate and volatility of commodity spot prices. This view gained credence because in the 2000s trading volume increased …

Market expectations of future return volatility play a crucial role in finance; so too does our understanding of the … informativeness of volatility forecasts produced by ARCH models versus the volatility forecasts derived from option prices and in … improving volatility forecasts produced by ARCH and option models and combinations of models. Daily and monthly data are …

seasonal pattern for the conditional volatility for the Swedish stock market has been found. The daily turnover in the Swedish … stock market has an impact on and eliminates to some extent seasonal patterns in conditional volatility. The daily turnover … correlated. We can also conclude that a feedback from the US stock market to the conditional volatility in the Swedish market …

pandemic: implied stock market volatility, newspaper-based economic policy uncertainty, twitter chatter about economic … greatly-from an 80 percent rise (relative to January 2020) in two-year implied volatility on the S&P 500 to a 20-fold rise in … forecaster disagreement about UK growth. Third, time paths also differ: implied volatility rose rapidly from late February and …

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. …