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CME Group News Release Exhibit 99.1 Media contact Chris Grams , 312.930.3435 Laurie Bischel , 312.648.8698 news@cmegroup.com www.cmegroup.mediaroom.com Investor contact John Peschier , 312.930.8491 CME - G FOR IMMEDIATE RELEASE CME Group Inc. Reports First - Quarter 2021 Financial Results CHICAGO , April 28 , 2021 - CME Group Inc. ( NASDAQ : CME ) today reported financial results for the first quarter of 2021 . The company reported revenue of $ 1.3 billion and operating income of $ 725 million for the first quarter of 2021. Net income was $ 574 million and diluted earnings per share were $ 1.60 . On an adjusted basis , net income was $ 641 million and diluted earnings per share were $ 1.79 . Financial results presented on an adjusted basis for the first quarter of 2021 and 2020 exclude certain items , which are detailed in the reconciliation of non - GAAP results.¹ " Since the start of 2021 , we have experienced strong demand for our products as clients looked to manage risks associated with the potential for a post - pandemic economic recovery , " said CME Group Chairman and Chief Executive Officer Terry Duffy . " Trading volumes in Q1 have returned to pre - pandemic levels , with ADV in the first quarter representing our third - highest quarterly ADV ever , and open interest climbing above 100 million contracts . Additionally , we continue to deliver against our growth objectives , introducing several innovative , new products , completing migration of BrokerTec to CME Globex and agreeing to form a joint venture for post - trade services in OTC markets . " First - quarter 2021 ADV was 21.8 million contracts , including non - U.S . ADV of 6.1 million contracts . 1. A reconciliation of the non - GAAP financial results mentioned to the respective GAAP figures can be found within the Reconciliation of GAAP to non - GAAP Measures chart at the end of the financial statements and earnings presentation materials . - more -