The securities litigation law firm of Brower Piven, A Professional Corporation, has commenced an investigation into possible breaches of fiduciary duty and other violations of state law by the Board of Directors of GFI Group Inc. (“GFI” or the “Company”) (NYSE: GFIG) relating to the proposed buyout of the Company by CME Group Inc. (“CME”). On July 30, 2014, GFI and CME announced the signing of a definitive merger agreement pursuant to which CME will acquire GFI. Under the terms of the agreement, GFI shareholders will receive $4.55 per share in CME Class A Common Stock for each share of GFI stock owned. Following the closing of the transaction, CME will sell GFI’s wholesale brokerage and clearing businesses to a private consortium of GFI management. The firm’s investigation seeks to determine, among other things, whether the Company’s Board of Directors breached their fiduciary duties by failing to maximize shareholder value before agreeing to enter into the transaction, and whether CME is underpaying for GFI shares. If you currently own common stock of GFI and would like to learn more about the investigation being conducted by Brower Piven, without cost or obligation to you, please visit our website at http://www.browerpiven.com/currentinvestigations.html. You may also request more information by contacting Brower Piven either by email at email@example.com or by telephone at (410) 415-6616. Attorneys at Brower Piven have extensive experience in litigating securities and other class action cases and have been advocating for the rights of shareholders since the 1980s.