Reports and Open Trading Hours Now that USDA reports are being released during open trading hours, it is clear that there is a spike in both volatility and volume in the seconds before and after release. USDA/ERS economist Michael Adjemian, who has previously written on the market effects of the WASDE announcement, has now looked at the dynamic during open trading hours. There is a spike of around 50 percent during the five minutes before and ten minutes after release of the report, settling down to around 5 percent the rest of the day. This is in contrast to most trading days where the rate of volatility is around 1 percent. There is a dip in trading at the moment of release where apparently everyone is pausing to comprehend what the...