      During the trading day, news is released and absorbed by marketparticipants in "real time." News that is released after the close oftrading will accumulate, and will only be immediately acted upon by tradersthat have access to post- and pre-market trading. For the rest, thisinformation can only be reacted to at the open of trading the followingday. Because of the cumulative effect of "after hours news," the "open oftrading" reaction can be dramatic. If acted upon properly, the profits canbe sizeable.