Accessibility StatementSkip Navigation CHICAGO, Sept. 16, 2025 /PRNewswire/ -- CME Group, the world's leading derivatives marketplace, today announced that its suite of Adjusted Interest Rate (AIR) Total Return futures reached an open interest (OI) record of more than 1 million contracts (equivalent to $365 billion notional) as well as a single-day volume record of 109,000 contracts (equivalent to$40 billion notional) on September 11. In addition, AIR Total Return futures average daily volume stands at a r ...