CME ▲ +0.3% - CME Group Inc. $CME - CME Group Reports Second-Highest August ADV of 29.7 Million Contracts CME Group reported its second-highest August average daily volume at 29.7 million contracts, a sign of sustained trading activity that likely supported the modest 0.3% gain in the stock today. 02-SEP-2026 07:30 AM ET