Volatility permeates modern financial theories and decision making processes. As such, accurate measures and good … forecasts of future volatility are critical for the implementation and evaluation of asset pricing theories. In response to this …, a voluminous literature has emerged for modeling the temporal dependencies in financial market volatility at the daily …

The paper studies the effect of the market's perceived exchange rate volatility on bid-ask spreads. The anticipated … volatility is extracted from currency options data. An increase in the perceived volatility is found to widen bid-ask spreads … estimate of the effect of the volatility on the spreads. Although the spread-volatility relation implied by the option model of …

components have return impacts also have impacts on deals and volatility. The announcement itself, in addition to the magnitude … of surprise, is found to increase the deals and price volatility in the immediately after the announcement. In addition …, some other items have no return impacts but deals and volatility impacts. These facts are consistent with a view that …