Catamaran Corp (USA) (NASDAQ:CTRX) Investor Investigation over Acquisition by OptumRx

San Diego, CA -- (ReleaseWire) -- 04/08/2015 -- An investigation on behalf of investors, who currently hold shares of Catamaran Corp (USA) (NASDAQ:CTRX), was announced concerning whether the takeover of Catamaran Corp by OptumRx is unfair to NASDAQ:CTRX stockholders.