Photo Release — NASDAQ Welcomes Proofpoint, Inc. to the NASDAQ Global Market (R) (GlobeNewswire Via Acquire Media NewsEdge) NEW YORK, April 20, 2012 (GLOBE NEWSWIRE) — The NASDAQ OMX Group, Inc. (Nasdaq:NDAQ) announced that Proofpoint Inc. (Nasdaq:PFPT) is trading today on the NASDAQ Global Market ®. A photo accompanying...Read more