In a further expansion of its short-term interest rate product offerings, CME Group, the world's largest and most diverse derivatives exchange, today announced plans to offer 3-month Overnight Index Swaps (OIS) futures and options on futures. The futures contract is scheduled to become available on Sunday, September 7, 2008, for a trade date of September 8, on the CME Globex electronic trading platform and on Monday, September 8, 2008, for open outcry trading.

CME Group, the world's largest and most diverse derivatives exchange, today announced it has obtained committed financing to support its acquisition of NYMEX Holdings, Inc. The committed financing takes the form of a $3.2 billion bridge financing facility with Bank of America and UBS.

CME Group Inc. (NASDAQ: CME) reported total revenues increased 71 percent to $563 million and net income increased 60 percent to $201 million for second-quarter 2008 compared with second-quarter 2007. Diluted earnings per share rose 3 percent to $3.67.

CME Group Inc. (NASDAQ: CME) and NYMEX Holdings, Inc. (NYSE: NMX) today announced they have revised the terms of their merger agreement, representing CME Group's full and final offer to acquire NYMEX Holdings (NYMEX) and that the boards of directors of both companies and of New York Mercantile Exchange, Inc. have approved the revised agreement.

CME Group, the world's largest and most diverse derivatives exchange, today announced second-quarter 2008 volume averaged 11.1 million contracts per day, up 7 percent from second-quarter 2007. Quarterly electronic volume increased 16 percent to 9.1 million contracts per day, compared with the same quarter last year, and represented 82 percent of total volume.

CME Group (NYSE: CME)(NASDAQ: CME) today announced that its board of directors has authorized new initiatives to return capital to shareholders while continuing to aggressively execute its global growth strategy. The initiatives include a share buyback program of up to $1.1 billion of CME Group Class A common stock, subject to market conditions. The buyback program will take place over a period of up to 18 months.

CME Group Inc. (NYSE: CME)(NASDAQ: CME) and NYMEX Holdings, Inc. (NYSE: NMX) today announced that they have received clearance from the U.S. Department of Justice (DOJ) to complete their proposed transaction without conditions.

CME Group, the world's largest and most diverse derivatives exchange, announced today that options on the E-mini S&P SmallCap 600 equity index futures are scheduled to begin trading July 27.

CME Group, the world's largest and most diverse derivatives exchange, today announced plans to offer U.S. Treasury and Interest Rate Swap predefined, implied intercommodity spreads. The new spreads, a first for fixed-income futures, will trade on the CME Globex electronic trading platform and will become available in the fourth quarter of 2008.

CME Group, the world's largest and most diverse derivatives exchange and the largest regulated marketplace for foreign exchange (FX), reached the second-highest day of volume trading with 1,264,086 futures and options on futures contracts traded, only surpassed on December 8, 2006, when 1,268,883 contracts were traded.

CME Group, the world's largest and most diverse derivatives exchange, today announced May 2008 volume averaged 10.6 million contracts per day, up 4 percent from May 2007. Total volume exceeded 223 million contracts for the month, of which 82 percent was traded electronically. Total electronic volume increased 12 percent versus May 2007 to average 8.7 million contracts per day.

CME Group, the world's largest and most diverse derivatives exchange, announced that it is expanding its suite of temperature-based products and is offering weather contracts on six U.S. cities and one European city. Cooling Degree Day contracts are available for trading starting today with Heating Degree Day and Weekly contracts to start in June and July, respectively.