Steiner, Christian; Groß, Anne; Entorf, Horst - 2009
. Announcements of both institutes are also clearly and immediately reflected in the volatility, which remains at a significantly … higher level for approximately two minutes slightly elevated for approximately 15 minutes. Combining returns and volatility … in a GARCH(1,1)-model, the paper reveals that significant increases in volatility only show up in the presence of …