“…The relationships between macroeconomic fundamentals and financial markets have been analysed for many years, especially with the recent availability of high frequency data (see Andersen and Bollerslev, 1998;Andersen et al, 2003Andersen et al, , 2007b. Interesting recent investigations have focussed and the effect of news announcements on price discovery in the foreign exchange market (Chen and Gau, 2010) and the high frequency effects of monetary policy announcements (Chuliá et al, 2010;Rosa, 2011;Hussain, 2011) Given the strong evidence for the presence of jumps in financial markets and the extreme reactions in financial markets to macroeconomic news announcements, this paper merges these literatures by investigating the extent to which macroeconomic announcement surprises coincide with statistically significant intraday jumps. The existing evidence detects multiple intraday jumps, but investigates stock markets that are closed at the times of scheduled macroeconomic data announcements.…”