Media firms probed on data release. Bloomberg, Dow Jones, and Reuters were among firms investigated for facilitating insider trading by prematurely releasing key government data, reports the WSJ. Investigators have decided not to file any criminal charges, say sources, after being unable to link suspicious trading patterns to the specific actions by media companies. Also at issue is the challenge of proving in court that a time advantage measured in tiny fractions of a second could be profitable. Still, investigators continue to have concerns about the handling of the government's economic data.