SRSEC Reporting Desk

CME GROUP INC. (CME) – SEC staff letter

2025-12-01 · Re: Form 10-K for Fiscal Year Ended December 31, 2024 · Accession 0000000000-25-011123 · Review completed (no further comments)

December 1, 2025 Lynne Fitzpatrick President & Chief Financial Officer CME GROUP INC. 20 South Wacker Drive Chicago, Illinois 60606 Re: CME GROUP INC. Form 10-K for Fiscal Year Ended December 31, 2024 File No. 001-31553 Dear Lynne Fitzpatrick: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Crypto Assets cc: Jonathan Marcus

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