MarketAxess Holdings Inc.
    SEC Filings

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    All SEC filings by MarketAxess Holdings Inc. (MKTX) — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.

    Financials

    10-QQuarterly reportView DiffAug 7, 2026
    10-QQuarterly reportView DiffMay 7, 2026
    ARSAnnual report to shareholdersApr 29, 2026
    10-KAnnual reportView DiffFeb 24, 2026
    10-QQuarterly reportView DiffNov 7, 2025
    10-QQuarterly reportView DiffAug 6, 2025
    10-QQuarterly reportView DiffMay 7, 2025
    ARSAnnual report to shareholdersApr 23, 2025
    10-KAnnual reportView DiffFeb 24, 2025
    10-QQuarterly reportView DiffNov 6, 2024

    Events

    8-KMarketaxess Reports Second Quarter 2026 Financial ResultsJul 30, 2026
    8-KIntercontinental Exchange to Acquire Marketaxess, Creating a Premier Fixed Income MarketplaceJul 30, 2026
    8-KCurrent reportJun 10, 2026
    8-KMarketaxess Reports First Quarter 2026 Financial ResultsMay 7, 2026
    8-K/ADeparture of Directors or Certain OfficersApr 17, 2026
    8-KDeparture of Directors or Certain OfficersFeb 17, 2026
    8-KMarketaxess Reports Fourth Quarter and Full Year 2025 Financial ResultsFeb 6, 2026
    8-KDouglas Cifu and Kenneth Schiciano Elected to Marketaxess Board of DirectorsJan 26, 2026
    8-KMarketaxess Announces Medium-Term Financial Targets1Dec 9, 2025
    8-KMarketaxess Reports Third Quarter 2025 Financial ResultsNov 7, 2025

    Registrations and Prospectuses

    S-8Registration of securities for employeesJun 8, 2022
    S-8Registration of securities for employeesJun 10, 2020
    S-8Registration of securities for employeesJul 24, 2015
    424B4Prospectus supplement with pricing infoFeb 23, 2012
    FWPFree writing prospectusFeb 23, 2012
    FWPFree writing prospectusFeb 22, 2012
    424B3Prospectus supplementFeb 21, 2012
    S-3ASRAutomatic shelf registrationFeb 21, 2012
    424B3Prospectus supplementFeb 18, 2011
    S-3Shelf registrationNov 24, 2008

    Proxies

    PREM14AMerger / Business CombinationSep 4, 2026
    DFAN14AAdditional proxy materials by non-managementJul 30, 2026
    DEFA14AAdditional proxy soliciting materialsJul 30, 2026
    DEFA14AAdditional proxy soliciting materialsJul 30, 2026
    DEFA14AAdditional proxy soliciting materialsApr 29, 2026
    DEF 14ADefinitive proxyView DiffApr 29, 2026
    DEFA14AAdditional proxy soliciting materialsApr 23, 2025
    DEF 14ADefinitive proxyView DiffApr 23, 2025
    DEFA14AAdditional proxy soliciting materialsApr 24, 2024
    DEF 14ADefinitive proxyView DiffApr 24, 2024

    Other

    CT ORDERConfidential treatment orderSep 5, 2017
    UPLOADLetter from SECJan 21, 2015
    CORRESPCorrespondence with SECJan 13, 2015
    UPLOADLetter from SECDec 29, 2014
    UPLOADLetter from SECOct 22, 2013
    CORRESPCorrespondence with SECOct 11, 2013
    UPLOADLetter from SECOct 1, 2013
    UPLOADLetter from SECAug 20, 2012
    CORRESPCorrespondence with SECAug 1, 2012
    UPLOADLetter from SECJul 23, 2012

    Ownership

    SC 13G/ABeneficial ownership reportAug 14, 2026
    4Portney Emily HopeAug 13, 2026
    SC 13G/ABeneficial ownership reportAug 13, 2026
    4Pintoff ScottAug 10, 2026
    144Notice of proposed sale of securitiesAug 10, 2026
    4Chwick JaneAug 7, 2026
    SC 13G/ABeneficial ownership reportAug 6, 2026
    4Pintoff ScottJul 10, 2026
    4Hernandez Carlos MauricioJun 18, 2026
    4Altobello Nancy A.Jun 12, 2026