Exhibit 99.1 Media contact Investor contact Laurie Bischel, 312.292.1937 Adam Minick, 312.340.8365 news@cmegroup.com investors@cmegroup.com cmegroup.mediaroom.com CME-G FOR IMMEDIATE RELEASE CME Group Inc. Reports Highest Q3 Revenue on Record for Q3 2026 • Double-digit revenue and net income growth CHICAGO, October 21, 2026 - CME Group Inc. (NASDAQ: CME) today reported financial results for the third quarter of 2026. The company reported revenue of $1.7 billion and operating income of $1.1 billion for the t ...