Derivatives exchange operator CME Group Inc. said Thursday its August volume averaged 11.7 million contracts per day, a 15 percent increase from a year ago.
Total volume was 258 million contracts, with 82 percent traded electronically.
Electronic volume averaged 9.7 million contracts per day, up 17 percent from a year earlier.
CME Group's exchanges offer a range of products representing all major asset classes, including futures and options based on interest rates, equity indexes, foreign exchange, energy, agricultural commodities, metals, weather and real estate.
CME Group shares rose $5.89, or 2.3 percent, to $262.17 in late trading Thursday.