CME Group, the world's largest and most diverse exchange, announced July volume averaged 11.2 million contracts per day, up 40 percent from July 2006, assuming CME and Chicago Board of Trade volumes were combined for the full month. On this basis, total monthly volume exceeded 235 million contracts. Electronic volume represented 79 percent of total exchange volume. Total options volume averaged 2.0 million contracts per day, up 16 percent from July 2006. Electronic options volume averaged 348,000 contracts per day, up 69 percent from the same period a year ago, representing 19 percent of total CME Group options volume.