The article deals with a typical phenomenon of financial time series - volatility. These time series usually embody … intermittent periods of relative "calm" and quite high variability. A volatility modelling of time series is made with the help of … special econometric volatility models which characterize the so-called conditional heteroskedasticity. The goal of this paper …

monetary announcements. Volatility of the returns is accounted for at the beginning and end of the trading session and it …