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Laurie Bischel, 312.648.8698
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Investor Contact
John Peschier, 312.930.8491
CME-G

FOR IMMEDIATE RELEASECME Group Announces Intention to Reconvene the Special Meeting of Shareholders toThursday, November 29, 2018
CHICAGO, October 31, 2018 – CME Group Inc. (Nasdaq: CME) today announced that it
intends to reconvene the special meeting of its shareholders to be held at 10:00 a.m. Central
Time on Thursday, November 29, 2018. The company plans to adjourn the special meeting ofits shareholders scheduled for 10:00 a.m. Central Time on Monday, November 5, 2018, without
conducting any business, and in order to provide more time to solicit additional proxies to vote infavor of the proposal to amend and restate CME Group’s certificate of incorporation to eliminate
some or all of the election rights held by its Class B shareholders.
The proposal is described in further detail in the proxy statement filed with the Securities
and Exchange Commission (“SEC”) on September 11, 2018 and additional materials filed withthe SEC on October 17, 2018. The company’s proxy statement and any other materials filed bythe company with the SEC remain otherwise unchanged and can be obtained free of charge at
the SEC’s website at www.sec.gov.
The reconvened special meeting will be held at CME Group headquarters, located at 20
South Wacker Drive, Chicago, Illinois, the same location as described in the original notice forthe special meeting.
The record date for the meeting remains September 6, 2018 and CME Group willcontinue to solicit proxies from its shareholders of record at the close of business on that date.
Shareholders who have already voted do not need to recast their votes.
Additional information about the special meeting is contained in the company's proxystatement for the special meeting. Questions regarding the proposal may be directed to Meg
Wright +1.312.930.3305 or Beth Hausoul +1.312.930.3484.

About CME GroupAs the world's leading and most diverse derivatives marketplace, CME Group(www.cmegroup.com) is where the world comes to manage risk. CME Group exchanges offer the widest
range of global benchmark products across all major asset classes, including futures and options basedon interest rates, equity indexes, foreign exchange, energy, agricultural products and metals. Around theworld, CME Group brings buyers and sellers together through its CME Globex® electronic trading
platform. CME Group also operates one of the world's leading central counterparty clearing providers
through CME Clearing, which offers clearing and settlement services across asset classes for exchange-

traded and over-the-counter derivatives. CME Group products and services ensure that businesses
around the world can effectively manage risk and achieve growth.
CME Group, the Globe logo, CME, Chicago Mercantile Exchange, Globex and E-mini aretrademarks of Chicago Mercantile Exchange Inc. CBOT and Chicago Board of Trade are trademarks ofBoard of Trade of the City of Chicago, Inc. NYMEX, New York Mercantile Exchange and ClearPort aretrademarks of New York Mercantile Exchange, Inc. COMEX is a trademark of Commodity Exchange,
Inc. Dow Jones, Dow Jones Industrial Average, S&P 500 and S&P are service and/or trademarks of Dow
Jones Trademark Holdings LLC, Standard & Poor's Financial Services LLC and S&P/Dow Jones Indices
LLC, as the case may be, and have been licensed for use by Chicago Mercantile Exchange Inc. All othertrademarks are the property of their respective owners.
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