By Saabira Chaudhuri
CME Group Inc. (CME) saw its trading volume fall last month amid a steep decline in trading of interest-rate futures.
Daily volume at the world's largest futures market operator averaged 13.1 million contracts last month, down 11% from June 2011 and 1% from May.
Daily volume for interest-rate futures, the company's largest product by that metric, averaged 5.1 million contracts a day in June, down 28% from a year earlier and 15% from May.
Equity index volume averaged 3.5 million contracts a day last month, a 1.3% decline from a year earlier but a 17% jump from May's levels.
Class A shares of CME closed Monday at $271.24 and were inactive premarket.
Write to Saabira Chaudhuri at email@example.com