CME Group announced August volume averaged 14.9 million contracts per day, up 78 percent from August 2006. Total monthly volume exceeded 341 million contracts, of which 77 percent was traded electronically. Total options volume averaged a record 3.0 million contracts per day, up 69 percent from August 2006. Electronic options volume averaged a record 442,000 contracts per day, up 107 percent from the same period a year ago, representing 15 percent of total CME Group options volume.