The authors examine the impact of scheduled macroeconomic news announcements on interest rate and foreign exchange futures markets. They find these announcements are responsible for most of the observed time-of-day and day-of-the-week volatility patterns in these markets. While the bulk of the...

The authors explore how wheat spot and futures market volatility has been impacted by government farm programs during the 1950-93 period. They find that changing volatility in both markets is highly associated with changing farm programs. The mandatory allotment programs of the 1950s and early...