Marketaxess Holdings Inc
MKTX- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0001278021
In the last 90 days, Marketaxess Holdings Inc insiders filed 0 open-market purchases and 4 sales; 397 institutions reported holding it in 13F filings for Q2 2026, worth $4.44B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Marketaxess Holdings Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 487
- +47 vs. Q3 2025
- Shares held
- 36.5M
- +1.81M (+5.2%) vs. Q3 2025
- Total value
- $6.62B
- +$566.0M (+9.4%) vs. Q3 2025
- New holders
- 118
- 155 more added
- Sold out
- 71
- 171 more reduced
12 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MKTX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 397 | $4.44B |
| Q1 2026 | 452 | $6.31B |
| Q4 2025 | 487 | $6.62B |
| Q3 2025 | 452 | $6.21B |
| Q2 2025 | 531 | $8.24B |
| Q1 2025 | 511 | $8.05B |
| Q4 2024 | 519 | $8.51B |
| Q3 2024 | 511 | $9.42B |
| Q2 2024 | 468 | $7.48B |
| Q1 2024 | 463 | $8.14B |
| Q4 2023 | 506 | $10.9B |
| Q3 2023 | 485 | $7.98B |
| Q2 2023 | 514 | $9.88B |
| Q1 2023 | 540 | $14.5B |
| Q4 2022 | 500 | $10.3B |
| Q3 2022 | 479 | $8.19B |
| Q2 2022 | 505 | $9.28B |
| Q1 2022 | 506 | $12.4B |
| Q4 2021 | 505 | $15.0B |
| Q3 2021 | 508 | $15.3B |
| Q2 2021 | 551 | $16.8B |
| Q1 2021 | 589 | $17.7B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 3,839,889 | $696.0M | 0.01% | −14,423−0.4% | Reduced |
| BlackRock, Inc. | 3,746,472 | $679.0M | 0.01% | +1,896,063+102.5% | Added |
| Primecap Management Co | 3,175,425 | $575.5M | 0.44% | +944,830+42.4% | Added |
| AQR Capital Management LLC | 2,558,097 | $463.7M | 0.24% | +1,607,009+169.0% | Added |
| FMR LLC | 2,004,625 | $363.3M | 0.02% | −139,296−6.5% | Reduced |
| North Reef Capital Management LP | 1,609,330 | $291.7M | 11.74% | +697,972+76.6% | Added |
| State Street Corp | 1,248,314 | $226.3M | 0.01% | −72,343−5.5% | Reduced |
| Van Eck Associates Corp | 1,214,967 | $220.2M | 0.18% | −733,666−37.7% | Reduced |
| Guardcap Asset Management Ltd | 1,153,578 | $209.0M | 5.58% | −207,686−15.3% | Reduced |
| Bank of Montreal | 951,024 | $172.4M | 0.07% | +932,687+5,086.4% | Added |
| Geode Capital Management, LLC | 833,067 | $151.0M | 0.01% | +2,071+0.2% | Added |
| Citadel Advisors LLC | 625,208 | $113.3M | 0.08% | +315,122+101.6% | Added |
| Neuberger Berman Group LLC | 549,639 | $99.6M | 0.07% | +547,573+26,504.0% | Added |
| JPMorgan Chase & Co | 545,364 | $98.8M | 0.01% | +97,439+21.8% | Added |
| Findlay Park Partners LLP | 536,400 | $97.2M | 1.24% | −108,300−16.8% | Reduced |
| Two Sigma Investments, LP | 533,527 | $96.7M | 0.14% | +169,143+46.4% | Added |
| Dimensional Fund Advisors LP | 526,981 | $95.5M | 0.02% | +5,852+1.1% | Added |
| Norges Bank | 503,855 | $91.3M | 0.01% | +503,855 | New |
| Morgan Stanley | 424,877 | $77.0M | 0.00% | −124,146−22.6% | Reduced |
| BNP Paribas Arbitrage, SA | 375,735 | $68.1M | 0.04% | −110,371−22.7% | Reduced |
| Charles Schwab Investment Management Inc | 318,386 | $57.7M | 0.01% | +3,238+1.0% | Added |
| RDST Capital LLC | 310,697 | $56.3M | 5.31% | +29,150+10.4% | Added |
| Millennium Management LLC | 301,665 | $54.7M | 0.04% | −305,891−50.3% | Reduced |
| Bank of New York Mellon Corp | 298,728 | $54.1M | 0.01% | −77,822−20.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 288,742 | $52.3M | 0.03% | +28,281+10.9% | Added |
| Northern Trust Corp | 234,306 | $42.5M | 0.01% | −158−0.1% | Reduced |
| Holocene Advisors, LP | 214,855 | $38.9M | 0.08% | −65,590−23.4% | Reduced |
| HRT Financial LP | 214,101 | $38.8M | 0.12% | +110,308+106.3% | Added |
| Bank of America Corp | 199,231 | $36.1M | 0.00% | +37,479+23.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 190,483 | $34.5M | 0.04% | +189,628+22,178.7% | Added |
| Ieq Capital, LLC | 189,326 | $34.3M | 0.10% | +156,664+479.7% | Added |
| Principal Financial Group Inc | 178,073 | $32.3M | 0.02% | −6,784−3.7% | Reduced |
| Renaissance Technologies LLC | 176,000 | $31.9M | 0.05% | −69,000−28.2% | Reduced |
| Goldman Sachs Group Inc | 172,598 | $31.3M | 0.00% | +38,947+29.1% | Added |
| Two Sigma Advisers, LP | 171,600 | $31.1M | 0.06% | −2,600−1.5% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 170,565 | $30.9M | 0.08% | +44,550+35.4% | Added |
| Walleye Capital LLC | 168,688 | $30.6M | 0.17% | +153,407+1,003.9% | Added |
| Janus Henderson Group PLC | 168,447 | $30.5M | 0.01% | +23,253+16.0% | Added |
| Nuveen, LLC | 134,524 | $24.4M | 0.01% | −386−0.3% | Reduced |
| Public Sector Pension Investment Board | 128,700 | $23.3M | 0.08% | −17,043−11.7% | Reduced |
| T. Rowe Price Investment Management, Inc. | 116,204 | $21.1M | 0.01% | −1,254,490−91.5% | Reduced |
| Invesco Ltd. | 114,619 | $20.8M | 0.00% | +38,292+50.2% | Added |
| Raymond James Financial Inc | 113,465 | $20.6M | 0.01% | −61,403−35.1% | Reduced |
| UBS Asset Management Americas Inc | 108,428 | $19.7M | 0.00% | −3,486−3.1% | Reduced |
| Cooke & Bieler LP | 104,100 | $18.9M | 0.20% | +104,100 | New |
| Champlain Investment Partners, LLC | 103,311 | $18.7M | 0.19% | +103,311 | New |
| UBS Group AG | 101,955 | $18.5M | 0.00% | −158,306−60.8% | Reduced |
| Schonfeld Strategic Advisors LLC | 100,235 | $18.2M | 0.09% | −19,926−16.6% | Reduced |
| Legal & General Group Plc | 97,269 | $17.6M | 0.00% | −3,337−3.3% | Reduced |
| California Public Employees Retirement System | 97,186 | $17.6M | 0.01% | −19,750−16.9% | Reduced |
| Victory Capital Management Inc | 93,670 | $17.0M | 0.01% | +63,320+208.6% | Added |
| Flossbach Von Storch AG | 93,100 | $16.9M | 0.07% | +14,100+17.8% | Added |
| Rhumbline Advisers | 88,192 | $16.0M | 0.01% | −2,255−2.5% | Reduced |
| Ameriprise Financial Inc | 83,362 | $15.1M | 0.00% | +70.0% | Added |
| Cerity Partners LLC | 81,965 | $14.9M | 0.02% | +52,876+181.8% | Added |
| Gillson Capital LP | 80,563 | $14.6M | 0.96% | +43,063+114.8% | Added |
| Voloridge Investment Management, LLC | 80,135 | $14.5M | 0.05% | −109,637−57.8% | Reduced |
| Interval Partners, LP | 76,423 | $13.9M | 0.32% | +52,229+215.9% | Added |
| Goodman Financial Corp | 76,294 | $13.8M | 2.62% | +3,924+5.4% | Added |
| CWM, LLC | 75,665 | $13.7M | 0.04% | +49,619+190.5% | Added |
| Swiss National Bank | 73,700 | $13.4M | 0.01% | +1,000+1.4% | Added |
| Squarepoint Ops LLC | 71,658 | $13.0M | 0.03% | −16,496−18.7% | Reduced |
| Assenagon Asset Management S.A. | 63,228 | $11.5M | 0.02% | +50,244+387.0% | Added |
| Algert Global LLC | 59,310 | $10.7M | 0.17% | −17,551−22.8% | Reduced |
| Mariner, LLC | 59,260 | $10.7M | 0.01% | +46,940+381.0% | Added |
| Canada Pension Plan Investment Board | 50,600 | $9.17M | 0.01% | −69,800−58.0% | Reduced |
| BW Gestao de Investimentos Ltda. | 49,500 | $8.97M | 0.32% | +49,500 | New |
| ICICI Prudential Asset Management Co Ltd | 49,289 | $8.93M | 1.05% | +2,200+4.7% | Added |
| Wealth Enhancement Advisory Services, LLC | 46,537 | $8.45M | 0.01% | +35,056+305.3% | Added |
| First Trust Advisors LP | 42,955 | $7.79M | 0.01% | +32,727+320.0% | Added |
| DF Dent & Co Inc | 42,116 | $7.63M | 0.11% | +110+0.3% | Added |
| Quantinno Capital Management LP | 41,229 | $7.47M | 0.02% | +30,168+272.7% | Added |
| Prana Capital Management, LP | 39,971 | $7.24M | 0.26% | −21,352−34.8% | Reduced |
| Wilson Asset Management (International) Pty Ltd | 39,461 | $7.15M | 1.84% | −10,729−21.4% | Reduced |
| Quadrature Capital Ltd | 39,174 | $7.10M | 0.07% | +14,535+59.0% | Added |
| Baillie Gifford & Co | 39,115 | $7.09M | 0.01% | −125,083−76.2% | Reduced |
| Trexquant Investment LP | 38,572 | $6.99M | 0.06% | −1,813−4.5% | Reduced |
| Winton Group Ltd | 36,364 | $6.59M | 0.23% | +23,850+190.6% | Added |
| Teacher Retirement System of Texas | 36,140 | $6.55M | 0.02% | +4,576+14.5% | Added |
| D. E. Shaw & Co., Inc. | 36,099 | $6.54M | 0.00% | −149,519−80.6% | Reduced |
| State Board of Administration of Florida Retirement System | 36,041 | $6.53M | 0.01% | −280−0.8% | Reduced |
| New York State Teachers Retirement System | 35,487 | $6.43M | 0.01% | −731−2.0% | Reduced |
| California State Teachers Retirement System | 35,210 | $6.38M | 0.01% | −721−2.0% | Reduced |
| Bahl & Gaynor Inc | 35,046 | $6.35M | 0.03% | −1,425−3.9% | Reduced |
| Great West Life Assurance Co | 35,041 | $6.35M | 0.01% | −3,255−8.5% | Reduced |
| Prudential Financial Inc | 34,363 | $6.23M | 0.01% | −80,793−70.2% | Reduced |
| Price T Rowe Associates Inc | 33,975 | $6.16M | 0.00% | +2,381+7.5% | Added |
| Susquehanna International Group, LLP | 33,473 | $6.07M | 0.01% | −64,231−65.7% | Reduced |
| State of Wisconsin Investment Board | 33,390 | $6.05M | 0.01% | −1,333−3.8% | Reduced |
| Stifel Financial Corp | 33,224 | $6.02M | 0.01% | +7,687+30.1% | Added |
| Balyasny Asset Management LLC | 32,695 | $5.93M | 0.01% | +32,695 | New |
| Picton Mahoney Asset Management | 32,396 | $5.87M | 0.06% | +32,396 | New |
| Thrivent Financial for Lutherans | 31,873 | $5.78M | 0.01% | −76−0.2% | Reduced |
| Citigroup Inc | 31,396 | $5.69M | 0.00% | −21,491−40.6% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 30,694 | $5.56M | 0.01% | −54,464−64.0% | Reduced |
| GW&K Investment Management, LLC | 30,579 | $5.54M | 0.05% | −42−0.1% | Reduced |
| Van Den Berg Management I, Inc | 30,399 | $5.51M | 1.26% | +16,382+116.9% | Added |
| Royal Bank of Canada | 30,307 | $5.49M | 0.00% | −123,359−80.3% | Reduced |
| Mercer Global Advisors Inc | 29,599 | $5.36M | 0.01% | +20,566+227.7% | Added |
| Man Group plc | 29,373 | $5.32M | 0.01% | −57,730−66.3% | Reduced |