GFI Group Acquired By CME Group; Stock Up 39% By: Benzinga via Benzinga July 30, 2014 at 09:51 AM EDT GFI Group (NYSE: GFIG) is up almost 40 percent as a result of CME Group's (NASDAQ: CME) buyout of Trayport and FENICS. CME ... Read More >> Related Stocks: CME Group Macy's Starwood Hotels & Resorts