<SEC-DOCUMENT>0001950047-25-002569.txt : 20250425
<SEC-HEADER>0001950047-25-002569.hdr.sgml : 20250425
<ACCEPTANCE-DATETIME>20250425162842
ACCESSION NUMBER:		0001950047-25-002569
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250425
DATE AS OF CHANGE:		20250425

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CME GROUP INC.
		CENTRAL INDEX KEY:			0001156375
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY & COMMODITY BROKERS, DEALERS, EXCHANGES & SERVICES [6200]
		ORGANIZATION NAME:           	09 Crypto Assets
		EIN:				364459170
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-31553
		FILM NUMBER:		25874551

	BUSINESS ADDRESS:	
		STREET 1:		20 S. WACKER DR.
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129301000

	MAIL ADDRESS:	
		STREET 1:		20 S. WACKER DR.
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHICAGO MERCANTILE EXCHANGE HOLDINGS INC
		DATE OF NAME CHANGE:	20010802

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GERDES LARRY G
		CENTRAL INDEX KEY:			0000925105
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		ONE GLENLAKE PARKWAY
		STREET 2:		SUITE 1325
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30326
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0000925105</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001156375</issuerCik>
            <issuerName>CME GROUP INC.</issuerName>
            <secFileNumber>001-31553</secFileNumber>
            <issuerAddress>
                <ns2:street1>20 South Wacker Drive</ns2:street1>
                <ns2:city>Chicago</ns2:city>
                <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                <ns2:zipCode>60606</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(312) 930-1000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>LARRY G GERDES</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>2000</noOfUnitsSold>
            <aggregateMarketValue>532238.80</aggregateMarketValue>
            <noOfUnitsOutstanding>360354174</noOfUnitsOutstanding>
            <approxSaleDate>04/25/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>06/30/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Compensation for Past Services</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>853</amountOfSecuritiesAcquired>
            <paymentDate>06/30/2023</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>06/30/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Compensation for Past Services</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>138</amountOfSecuritiesAcquired>
            <paymentDate>06/30/2022</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>06/30/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Compensation for Past Services</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1009</amountOfSecuritiesAcquired>
            <paymentDate>06/30/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>LARRY G GERDES</name>
                <address>
                    <ns2:street1>20 South Wacker Drive</ns2:street1>
                    <ns2:city>Chicago</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>04/24/2025</saleDate>
            <amountOfSecuritiesSold>8</amountOfSecuritiesSold>
            <grossProceeds>2104.80</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>LARRY G GERDES</name>
                <address>
                    <ns2:street1>20 South Wacker Drive</ns2:street1>
                    <ns2:city>Chicago</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>04/24/2025</saleDate>
            <amountOfSecuritiesSold>1000</amountOfSecuritiesSold>
            <grossProceeds>265102.60</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>LARRY G GERDES</name>
                <address>
                    <ns2:street1>20 South Wacker Drive</ns2:street1>
                    <ns2:city>Chicago</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>04/24/2025</saleDate>
            <amountOfSecuritiesSold>75</amountOfSecuritiesSold>
            <grossProceeds>19732.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>LARRY G GERDES</name>
                <address>
                    <ns2:street1>20 South Wacker Drive</ns2:street1>
                    <ns2:city>Chicago</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>04/24/2025</saleDate>
            <amountOfSecuritiesSold>917</amountOfSecuritiesSold>
            <grossProceeds>241262.70</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>04/25/2025</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Larry G. Gerdes</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
