Barry Rosenstein's Jana Partners discloses it bought 25.5M Zynga (ZNGA +8.2%) shares in Q1....

|About: Zynga (ZNGA)|By:, SA News Editor

Barry Rosenstein's Jana Partners discloses it bought 25.5M Zynga (ZNGA +8.2%) shares in Q1. That's good for a 4.2% stake in the social gaming leader, which is shooting higher on the news. (13F)