Arbitron Inc. Jumps 13% on J.P. Morgan Upgrade (ARB)

Shares of Arbitron Inc. ARB are jumping higher this morning after J.P. Morgan spun the Bull case for the name and upgraded it to Overweight, from Neutral. Shares are currently higher by 13.00%, trading at $35.37. Stock volume is exploding as well; within the first hour of trading, shares have already turned over 908,000 times, which is 5.3x the 10-day daily average volume. Some of this move is likely attributable to the 16.63% short interest. Arbitron Inc. is a media and marketing information services company primarily serving radio, advertising agencies, cable and broadcast television, advertisers, retailers, out-of-home media and online media.