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Disclosery

MKTX MARKETAXESS HLDGS INC

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COM (common), issuer CIK 1278021

481 managers (488 13F filers) reported a position in MKTX shares at 2025-12-31, 36,515,530 shares in all. 103 filers opened a position and 71 filers sold out during the quarter.

Managers
481
13F filers
488
New
103
Added
156
Reduced
171
Sold out
71
Shares held by filers
36,515,530

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 2 filers holding3,843,875$697M-14,152Timeline
BlackRock, Inc.in group BlackRock, Inc.3,746,472$679M0.01%+1,896,06313F-HRTimelineGroup
PRIMECAP MANAGEMENT CO/CA/3,175,425$576M0.44%+944,83013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC2,558,097$464M0.24%+1,607,00913F-HRTimelineGroup
FMR LLCin group FMR LLC2,004,625$363M0.02%-139,29613F-HRTimelineGroup
North Reef Capital Management LP1,609,330$292M11.74%+697,97213F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,248,314$226M0.01%-72,34313F-HRTimelineGroup
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP1,214,967$220M0.18%-733,66613F-HRTimelineGroup
GUARDCAP ASSET MANAGEMENT Ltd1,153,578$209M5.58%-207,68613F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/951,024$172M0.07%+932,68713F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC833,067$151M0.01%+2,07113F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding705,127$128M+166,543Timeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC625,208$113M0.08%+315,12213F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC549,639$99.6M0.07%+547,57313F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO545,364$98.8M0.01%+97,43913F-HRTimelineGroup
Findlay Park Partners LLP536,400$97.2M1.24%-108,30013F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP526,981$95.5M0.02%+5,85213F-HRTimelineGroup
NORGES BANK503,855$91.3M0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY424,877$77M<0.01%-124,14613F-HR/ATimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS375,735$68.1M0.04%-110,37113F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co318,386$57.7M0.01%+3,23813F-HRTimelineGroup
RDST Capital LLC310,697$56.3M5.31%+29,15013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC301,665$54.7M0.04%-305,89113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp298,728$54.1M0.01%-77,82213F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …288,742$52.3M0.03%+28,28113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP234,306$42.5M0.01%-15813F-HRTimelineGroup
Holocene Advisors, LP214,855$38.9M0.08%-65,59013F-HRTimeline
HRT FINANCIAL LP214,101$38.8M0.12%+110,30813F-HRTimeline
UBS Group AGgroup of 2 filers holding210,383$38.1M-161,792Timeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/199,231$36.1M<0.01%+37,47913F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …190,483$34.5M0.04%+189,62813F-HRTimelineGroup
IEQ CAPITAL, LLC189,326$34.3M0.1%+156,66413F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding178,073$32.3M-6,877Timeline
RENAISSANCE TECHNOLOGIES LLC176,000$31.9M0.05%-69,00013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC172,598$31.3M<0.01%+38,94713F-HR/ATimelineGroup
Connor, Clark & Lunn Investment Managem…170,565$30.9M0.08%+44,55013F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding168,688$30.6M+151,187Timeline
JANUS HENDERSON GROUP PLCin group Janus Henderson168,447$30.5M0.01%+23,25313F-HRTimelineGroup
Nuveen, LLCin group TIAA134,524$24.4M0.01%-38613F-HRTimelineGroup
Public Sector Pension Investment Board128,700$23.3M0.08%-17,04313F-HRTimeline
T. Rowe Price Investment Management, In…116,204$21.1M0.01%-1,254,49013F-HR/ATimeline
Invesco Ltd.in group Invesco Ltd.114,619$20.8M<0.01%+38,29213F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC113,465$20.6M0.01%-61,40313F-HRTimelineGroup
COOKE & BIELER LP104,100$18.9M0.2%new13F-HRTimeline
Champlain Investment Partners, LLC103,311$18.7M0.19%new13F-HRTimeline
Schonfeld Strategic Advisors LLC100,235$18.2M0.09%-19,92613F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc97,269$17.6M<0.01%-3,33713F-HRTimelineGroup
California Public Employees Retirement …97,186$17.6M0.01%-19,75013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC93,670$17M0.01%+63,32013F-HRTimeline
FLOSSBACH VON STORCH SE93,100$16.9M0.07%+14,10013F-HRTimeline
RHUMBLINE ADVISERS88,192$16M0.01%-2,25513F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC83,362$15.1M<0.01%+713F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC81,965$14.9M0.02%+52,87613F-HRTimelineGroup
Gillson Capital LP80,563$14.6M0.96%+43,06313F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC80,135$14.5M0.05%-109,63713F-HRTimeline
Interval Partners, LP76,423$13.9M0.32%+52,22913F-HRTimeline
Goodman Financial Corp76,294$13.8M2.62%+3,92413F-HRTimeline
CWM, LLCin group CWM, LLC75,665$13.7M0.04%+49,61913F-HRTimelineGroup
Swiss National Bank73,700$13.4M0.01%+1,00013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC71,658$13M0.03%-16,49613F-HRTimelineGroup
Assenagon Asset Management S.A.63,228$11.5M0.02%+50,24413F-HRTimeline
ALGERT GLOBAL LLC59,310$10.7M0.17%-17,55113F-HR/ATimeline
Mariner, LLCin group Mariner, LLC59,260$10.7M0.01%+46,94013F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD50,600$9.17M0.01%-69,80013F-HRTimeline
BW Gestao de Investimentos Ltda.49,500$8.97M0.32%new13F-HRTimeline
ICICI Prudential Asset Management Co Ltd49,289$8.93M1.05%+2,20013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…46,537$8.45M0.01%+35,05613F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP42,955$7.79M0.01%+32,72713F-HRTimelineGroup
DF DENT & CO INC42,116$7.63M0.11%+11013F-HRTimeline
Quantinno Capital Management LP41,229$7.47M0.02%+30,16813F-HRTimeline
Prana Capital Management, LP39,971$7.24M0.26%-21,35213F-HRTimeline
WILSON ASSET MANAGEMENT (INTERNATIONAL)…39,461$7.15M1.84%-10,72913F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd39,174$7.1M0.07%+14,53513F-HRTimelineGroup
BAILLIE GIFFORD & COin group BAILLIE GIFFORD & CO39,115$7.09M0.01%-125,08313F-HRTimelineGroup
Trexquant Investment LP38,572$6.99M0.06%-1,81313F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd36,364$6.59M0.23%+23,85013F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS36,140$6.55M0.02%+4,57613F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.36,099$6.54M<0.01%-149,51913F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…36,041$6.53M0.01%-28013F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…35,487$6.43M0.01%-73113F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…35,210$6.38M0.01%-72113F-HRTimeline
Bahl & Gaynor LLC35,046$6.35M0.03%-1,42513F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co35,041$6.35M0.01%-3,25513F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC34,363$6.23M0.01%-80,79313F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/33,975$6.16M<0.01%+2,38113F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…33,473$6.07M0.01%-64,23113F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD33,390$6.05M0.01%-1,33313F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP33,224$6.02M0.01%+7,68713F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management32,695$5.93M0.01%new13F-HRTimelineGroup
PICTON MAHONEY ASSET MANAGEMENT32,396$5.87M0.06%new13F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…31,873$5.78M0.01%-7613F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC31,396$5.69M<0.01%-21,49113F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…30,694$5.56M0.01%-54,46413F-HRTimeline
GW&K Investment Management, LLC30,579$5.54M0.05%-4213F-HRTimeline
VAN DEN BERG MANAGEMENT I, INC30,399$5.51M1.26%+16,38213F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA30,307$5.49M<0.01%-123,35913F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV29,599$5.36M0.01%+20,56613F-HRTimeline
Man Group plcin group Man Group plc29,373$5.32M0.01%-57,73013F-HRTimelineGroup
FIDEURAM - INTESA SANPAOLO PRIVATE BANK…29,307$5.31M0.19%13F-HR/ATimeline
Robertson Opportunity Capital, LLC28,830$5.23M1.9%new13F-HRTimeline
Gotham Asset Management, LLC28,722$5.21M0.02%+15,39013F-HRTimeline
Amundiin group Amundi28,621$5.19M<0.01%-149,77313F-HRTimelineGroup
HEARTLAND ADVISORS INC28,421$5.15M0.28%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC27,902$5.06M<0.01%-7,27013F-HRTimelineGroup
GENEVA CAPITAL MANAGEMENT LLC27,446$4.97M0.09%+3,41813F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding27,228$4.94M+14,310Timeline
GUARDIAN CAPITAL LPgroup of 2 filers holding25,200$4.54M-9,697Timeline
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…25,000$4.53M0.01%-35,00013F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL23,589$4.28M0.02%-106,16913F-HRTimeline
Taylor Hoffman Capital Management LLC23,583$4.27M1.3%+4,29613F-HRTimeline
Lombard Odier Asset Management (Europe)…23,500$4.26M0.22%+9,25013F-HRTimeline
READYSTATE ASSET MANAGEMENT LP23,373$4.24M0.19%new13F-HRTimeline
Morningstar Investment Management LLCin group Morningstar Investment Manage…23,007$4.17M0.25%-7,96913F-HRTimelineGroup
Cinctive Capital Management LP22,853$4.14M0.24%+9,93713F-HRTimeline
Caisse de depot et placement du Quebec22,484$4.08M0.01%new13F-HRTimeline
Aquatic Capital Management LLC21,263$3.85M0.11%-20,76913F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…21,119$3.83M<0.01%+10,06313F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.20,549$3.72M<0.01%+2,64613F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND20,262$3.67M<0.01%+14313F-HRTimeline
FJ Capital Management LLC20,252$3.67M0.41%new13F-HRTimeline
D.A. DAVIDSON & CO.20,234$3.67M0.02%+1,39913F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.19,344$3.51M0.01%-152,03913F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC18,984$3.44M0.03%+1,93113F-HRTimelineGroup
Illinois Municipal Retirement Fund18,941$3.43M0.04%new13F-HRTimeline
State of Alaska, Department of Revenue18,923$3.43M0.04%+12313F-HRTimeline
CAPTRUST FINANCIAL ADVISORS18,254$3.31M0.01%+13,82213F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD17,972$3.26M0.01%+1,13413F-HRTimelineGroup
Hunter Perkins Capital Management, LLC17,202$3.12M0.72%new13F-HRTimeline
Louisiana State Employees Retirement Sy…17,000$3.08M0.05%-20013F-HRTimeline
Polar Asset Management Partners Inc.16,700$3.03M0.06%-23,54613F-HRTimeline
Ensign Peak Advisors, Inc16,662$3.02M0.01%+3,47313F-HR/ATimeline
State of Tennessee, Department of Treas…17,573$2.97M0.01%-3,56413F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC15,905$2.88M0.01%-17113F-HRTimelineGroup
Police & Firemen's Retirement System of…15,845$2.87M0.02%-22713F-HRTimeline
Alamar Capital Management, LLC15,612$2.83M1.56%-1,22013F-HRTimeline
Treasurer of the State of North Carolina15,269$2.77M0.01%-1,12213F-HRTimeline
Creative Planningin group Creative Planning15,261$2.77M<0.01%+5,59113F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC15,081$2.73M<0.01%-40213F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…14,441$2.62M0.01%+1,01713F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd14,232$2.58M0.07%+12,90913F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO14,184$2.57M<0.01%-51413F-HRTimelineGroup
Sanctuary Advisors, LLC14,131$2.56M0.01%+2,07913F-HRTimeline
Pallas Capital Advisors LLC13,624$2.47M0.08%+10,20313F-HRTimeline
SummitTX Capital, L.P.13,612$2.47M0.07%+11,78413F-HRTimeline
Merit Financial Group, LLC13,374$2.42M0.02%+10,99313F-HRTimeline
Bridgewater Associates, LP13,261$2.4M0.01%new13F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA13,183$2.39M<0.01%-87613F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…13,183$2.39M0.01%+26613F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…13,054$2.37M0.01%-91913F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…12,706$2.3M0.01%+18313F-HRTimeline
Bridgefront Capital, LLC12,659$2.29M0.58%+5,49313F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC12,579$2.28M0.02%+7,79813F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC12,392$2.25M<0.01%-155,23013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC13,613$2.18M0.01%-39,97713F-HRTimeline
AMALGAMATED BANK11,726$2.12M0.02%+613F-HRTimeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC11,649$2.11M0.01%-1,44913F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC11,460$2.08M<0.01%-54513F-HRTimelineGroup
SG Americas Securities, LLC11,432$2.07M<0.01%-12,71713F-HRTimeline
Gator Capital Management, LLC11,119$2.02M0.42%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources10,806$1.96M<0.01%new13F-HRTimelineGroup
LECAP ASSET MANAGEMENT LTD10,596$1.92M0.76%-3,06313F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC10,557$1.91M0.02%-28,95613F-HRTimelineGroup
Sone Capital Management, LLC10,355$1.88M0.15%-76,31313F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM10,342$1.87M0.01%-74613F-HRTimeline
WALLED LAKE PLANNING & WEALTH MANAGEMEN…10,332$1.87M0.59%+17113F-HRTimeline
CIBC WORLD MARKET INC.10,253$1.86M<0.01%+2,12613F-HRTimeline
Oak Thistle LLC9,892$1.79M0.25%-51213F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC10,142$1.75M0.02%-1,56513F-HRTimeline
Handelsbanken Fonder AB9,344$1.69M0.01%013F-HRTimeline
Verition Fund Management LLC9,341$1.69M0.01%+1,34913F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…9,203$1.67M0.01%-31313F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…9,202$1.67M0.01%+1,31413F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND8,544$1.55M0.02%+14413F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …8,115$1.47M<0.01%-1,29613F-HRTimelineGroup
COMERICA BANK8,072$1.46M0.01%-2,33713F-HRTimeline
KLP KAPITALFORVALTNING AS8,000$1.45M0.01%+20013F-HRTimeline
Integrated Wealth Concepts LLC7,960$1.44M0.02%new13F-HRTimeline
EVOLVE PRIVATE WEALTH, LLC7,738$1.4M0.08%13F-HRTimeline
Dockside LLC7,619$1.38M0.35%13F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding7,586$1.37M+7,530Timeline
Krilogy Financial LLC7,807$1.34M0.05%+2,63613F-HRTimeline
Alpha Omega Wealth Management LLC7,315$1.33M0.22%new13F-HRTimeline
Maryland State Retirement & Pension Sys…7,181$1.3M0.03%+8113F-HRTimeline
Stiles Financial Services Inc6,975$1.26M0.39%-1,42013F-HRTimeline
QSV Equity Investors LLC6,753$1.22M1.81%new13F-HRTimeline
NorthCrest Asset Manangement, LLC6,567$1.18M0.03%+4,28713F-HRTimeline
DekaBank Deutsche Girozentrale5,080$1.13M<0.01%013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC6,019$1.09M0.01%-80813F-HRTimeline
Summit Trail Advisors, LLC5,834$1.06M0.02%+65713F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK5,781$1.05M<0.01%013F-HRTimelineGroup
Parvin Asset Management, LLC5,774$1.05M0.85%+4,42413F-HRTimeline
Northwest & Ethical Investments L.P.5,736$1.04M0.02%-81713F-HR/ATimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\5,723$1.04M<0.01%+1,91513F-HRTimelineGroup
Quantbot Technologies LP5,661$1.03M0.03%-64,47513F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …5,461$995K<0.01%-69413F-HRTimelineGroup
TWO SIGMA SECURITIES, LLC5,453$988K0.14%+3,98213F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…5,320$964K<0.01%+31013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN5,295$960K<0.01%-6,87113F-HRTimelineGroup
Essential Partners LLC5,173$938K0.29%+3,20913F-HRTimeline
Legato Capital Management LLC5,168$937K0.08%new13F-HRTimeline