This paper explores the impacts of key policy actions by US and European authorities on stock returns of systemically important banks in Europe and US around the subprime crisis. We find that the US policy announcements had a stronger impact on the European and US banking industry than the...

This paper documents that speed is crucially important for high frequency trading strategies based on U.S. macroeconomic news releases. Using order level data of the highly liquid S&P500 ETF traded on NASDAQ from January 6, 2009, to December 12, 2011, we find that a delay of 300 milliseconds (1...