<SEC-DOCUMENT>0001193125-25-317564.txt : 20251212
<SEC-HEADER>0001193125-25-317564.hdr.sgml : 20251212
<ACCEPTANCE-DATETIME>20251212161502
ACCESSION NUMBER:		0001193125-25-317564
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251212
FILED AS OF DATE:		20251212
DATE AS OF CHANGE:		20251212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pintoff Scott
		CENTRAL INDEX KEY:			0001314400
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34091
		FILM NUMBER:		251568253

	MAIL ADDRESS:	
		STREET 1:		C/O MARKETAXESS HOLDINGS, INC.
		STREET 2:		55 HUDSON YARDS, FLOOR 15
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10001

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARKETAXESS HOLDINGS INC
		CENTRAL INDEX KEY:			0001278021
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		ORGANIZATION NAME:           	09 Crypto Assets
		EIN:				522230784
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		55 HUDSON YARDS, 15TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10001
		BUSINESS PHONE:		212-831-6000

	MAIL ADDRESS:	
		STREET 1:		55 HUDSON YARDS, 15TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10001

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MARKETAXESS HOLDING INC
		DATE OF NAME CHANGE:	20040129
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-12</periodOfReport>

    <issuer>
        <issuerCik>0001278021</issuerCik>
        <issuerName>MARKETAXESS HOLDINGS INC</issuerName>
        <issuerTradingSymbol>MKTX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001314400</rptOwnerCik>
            <rptOwnerName>Pintoff Scott</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MARKETAXESS HOLDINGS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>55 HUDSON YARDS, 15TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10001</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>General Counsel and Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>true</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.003 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>177.85</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9738</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Patrick Wilson as Attorney-in-Fact for Scott Pintoff</signatureName>
        <signatureDate>2025-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
