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 |
|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 33,975 | $6.16M | 0.00% | +2,381+7.5% | Added |
| Prudential Financial Inc | 34,363 | $6.23M | 0.01% | −80,793−70.2% | Reduced |
| Great West Life Assurance Co | 35,041 | $6.35M | 0.01% | −3,255−8.5% | Reduced |
| Bahl & Gaynor Inc | 35,046 | $6.35M | 0.03% | −1,425−3.9% | Reduced |
| California State Teachers Retirement System | 35,210 | $6.38M | 0.01% | −721−2.0% | Reduced |
| New York State Teachers Retirement System | 35,487 | $6.43M | 0.01% | −731−2.0% | Reduced |
| State Board of Administration of Florida Retirement System | 36,041 | $6.53M | 0.01% | −280−0.8% | Reduced |
| D. E. Shaw & Co., Inc. | 36,099 | $6.54M | 0.00% | −149,519−80.6% | Reduced |
| Teacher Retirement System of Texas | 36,140 | $6.55M | 0.02% | +4,576+14.5% | Added |
| Winton Group Ltd | 36,364 | $6.59M | 0.23% | +23,850+190.6% | Added |
| Trexquant Investment LP | 38,572 | $6.99M | 0.06% | −1,813−4.5% | Reduced |
| Baillie Gifford & Co | 39,115 | $7.09M | 0.01% | −125,083−76.2% | Reduced |
| Quadrature Capital Ltd | 39,174 | $7.10M | 0.07% | +14,535+59.0% | Added |
| Wilson Asset Management (International) Pty Ltd | 39,461 | $7.15M | 1.84% | −10,729−21.4% | Reduced |
| Prana Capital Management, LP | 39,971 | $7.24M | 0.26% | −21,352−34.8% | Reduced |
| Quantinno Capital Management LP | 41,229 | $7.47M | 0.02% | +30,168+272.7% | Added |
| DF Dent & Co Inc | 42,116 | $7.63M | 0.11% | +110+0.3% | Added |
| First Trust Advisors LP | 42,955 | $7.79M | 0.01% | +32,727+320.0% | Added |
| Wealth Enhancement Advisory Services, LLC | 46,537 | $8.45M | 0.01% | +35,056+305.3% | Added |
| ICICI Prudential Asset Management Co Ltd | 49,289 | $8.93M | 1.05% | +2,200+4.7% | Added |
| BW Gestao de Investimentos Ltda. | 49,500 | $8.97M | 0.32% | +49,500 | New |
| Canada Pension Plan Investment Board | 50,600 | $9.17M | 0.01% | −69,800−58.0% | Reduced |
| Mariner, LLC | 59,260 | $10.7M | 0.01% | +46,940+381.0% | Added |
| Algert Global LLC | 59,310 | $10.7M | 0.17% | −17,551−22.8% | Reduced |
| Assenagon Asset Management S.A. | 63,228 | $11.5M | 0.02% | +50,244+387.0% | Added |
| Squarepoint Ops LLC | 71,658 | $13.0M | 0.03% | −16,496−18.7% | Reduced |
| Swiss National Bank | 73,700 | $13.4M | 0.01% | +1,000+1.4% | Added |
| CWM, LLC | 75,665 | $13.7M | 0.04% | +49,619+190.5% | Added |
| Goodman Financial Corp | 76,294 | $13.8M | 2.62% | +3,924+5.4% | Added |
| Interval Partners, LP | 76,423 | $13.9M | 0.32% | +52,229+215.9% | Added |
| Voloridge Investment Management, LLC | 80,135 | $14.5M | 0.05% | −109,637−57.8% | Reduced |
| Gillson Capital LP | 80,563 | $14.6M | 0.96% | +43,063+114.8% | Added |
| Cerity Partners LLC | 81,965 | $14.9M | 0.02% | +52,876+181.8% | Added |
| Ameriprise Financial Inc | 83,362 | $15.1M | 0.00% | +70.0% | Added |
| Rhumbline Advisers | 88,192 | $16.0M | 0.01% | −2,255−2.5% | Reduced |
| Flossbach Von Storch AG | 93,100 | $16.9M | 0.07% | +14,100+17.8% | Added |
| Victory Capital Management Inc | 93,670 | $17.0M | 0.01% | +63,320+208.6% | Added |
| California Public Employees Retirement System | 97,186 | $17.6M | 0.01% | −19,750−16.9% | Reduced |
| Legal & General Group Plc | 97,269 | $17.6M | 0.00% | −3,337−3.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 100,235 | $18.2M | 0.09% | −19,926−16.6% | Reduced |
| UBS Group AG | 101,955 | $18.5M | 0.00% | −158,306−60.8% | Reduced |
| Champlain Investment Partners, LLC | 103,311 | $18.7M | 0.19% | +103,311 | New |
| Cooke & Bieler LP | 104,100 | $18.9M | 0.20% | +104,100 | New |
| UBS Asset Management Americas Inc | 108,428 | $19.7M | 0.00% | −3,486−3.1% | Reduced |
| Raymond James Financial Inc | 113,465 | $20.6M | 0.01% | −61,403−35.1% | Reduced |
| Invesco Ltd. | 114,619 | $20.8M | 0.00% | +38,292+50.2% | Added |
| T. Rowe Price Investment Management, Inc. | 116,204 | $21.1M | 0.01% | −1,254,490−91.5% | Reduced |
| Public Sector Pension Investment Board | 128,700 | $23.3M | 0.08% | −17,043−11.7% | Reduced |
| Nuveen, LLC | 134,524 | $24.4M | 0.01% | −386−0.3% | Reduced |
| Janus Henderson Group PLC | 168,447 | $30.5M | 0.01% | +23,253+16.0% | Added |
| Walleye Capital LLC | 168,688 | $30.6M | 0.17% | +153,407+1,003.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 170,565 | $30.9M | 0.08% | +44,550+35.4% | Added |
| Two Sigma Advisers, LP | 171,600 | $31.1M | 0.06% | −2,600−1.5% | Reduced |
| Goldman Sachs Group Inc | 172,598 | $31.3M | 0.00% | +38,947+29.1% | Added |
| Renaissance Technologies LLC | 176,000 | $31.9M | 0.05% | −69,000−28.2% | Reduced |
| Principal Financial Group Inc | 178,073 | $32.3M | 0.02% | −6,784−3.7% | Reduced |
| Ieq Capital, LLC | 189,326 | $34.3M | 0.10% | +156,664+479.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 190,483 | $34.5M | 0.04% | +189,628+22,178.7% | Added |
| Bank of America Corp | 199,231 | $36.1M | 0.00% | +37,479+23.2% | Added |
| HRT Financial LP | 214,101 | $38.8M | 0.12% | +110,308+106.3% | Added |
| Holocene Advisors, LP | 214,855 | $38.9M | 0.08% | −65,590−23.4% | Reduced |
| Northern Trust Corp | 234,306 | $42.5M | 0.01% | −158−0.1% | Reduced |
| Arrowstreet Capital, Limited Partnership | 288,742 | $52.3M | 0.03% | +28,281+10.9% | Added |
| Bank of New York Mellon Corp | 298,728 | $54.1M | 0.01% | −77,822−20.7% | Reduced |
| Millennium Management LLC | 301,665 | $54.7M | 0.04% | −305,891−50.3% | Reduced |
| RDST Capital LLC | 310,697 | $56.3M | 5.31% | +29,150+10.4% | Added |
| Charles Schwab Investment Management Inc | 318,386 | $57.7M | 0.01% | +3,238+1.0% | Added |
| BNP Paribas Arbitrage, SA | 375,735 | $68.1M | 0.04% | −110,371−22.7% | Reduced |
| Morgan Stanley | 424,877 | $77.0M | 0.00% | −124,146−22.6% | Reduced |
| Norges Bank | 503,855 | $91.3M | 0.01% | +503,855 | New |
| Dimensional Fund Advisors LP | 526,981 | $95.5M | 0.02% | +5,852+1.1% | Added |
| Two Sigma Investments, LP | 533,527 | $96.7M | 0.14% | +169,143+46.4% | Added |
| Findlay Park Partners LLP | 536,400 | $97.2M | 1.24% | −108,300−16.8% | Reduced |
| JPMorgan Chase & Co | 545,364 | $98.8M | 0.01% | +97,439+21.8% | Added |
| Neuberger Berman Group LLC | 549,639 | $99.6M | 0.07% | +547,573+26,504.0% | Added |
| Citadel Advisors LLC | 625,208 | $113.3M | 0.08% | +315,122+101.6% | Added |
| Geode Capital Management, LLC | 833,067 | $151.0M | 0.01% | +2,071+0.2% | Added |
| Bank of Montreal | 951,024 | $172.4M | 0.07% | +932,687+5,086.4% | Added |
| Guardcap Asset Management Ltd | 1,153,578 | $209.0M | 5.58% | −207,686−15.3% | Reduced |
| Van Eck Associates Corp | 1,214,967 | $220.2M | 0.18% | −733,666−37.7% | Reduced |
| State Street Corp | 1,248,314 | $226.3M | 0.01% | −72,343−5.5% | Reduced |
| North Reef Capital Management LP | 1,609,330 | $291.7M | 11.74% | +697,972+76.6% | Added |
| FMR LLC | 2,004,625 | $363.3M | 0.02% | −139,296−6.5% | Reduced |
| AQR Capital Management LLC | 2,558,097 | $463.7M | 0.24% | +1,607,009+169.0% | Added |
| Primecap Management Co | 3,175,425 | $575.5M | 0.44% | +944,830+42.4% | Added |
| BlackRock, Inc. | 3,746,472 | $679.0M | 0.01% | +1,896,063+102.5% | Added |
| Vanguard Group Inc | 3,839,889 | $696.0M | 0.01% | −14,423−0.4% | Reduced |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −163,900−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −75,388−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −64,825−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −42,002−100.0% | Sold out |
| Prospector Partners LLC | 0 | $0 | 0.00% | −37,965−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −35,026−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −34,404−100.0% | Sold out |
| First Citizens Bank & Trust Co | 0 | $0 | 0.00% | −34,267−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −32,267−100.0% | Sold out |
| Envestnet Portfolio Solutions, Inc. | 0 | $0 | 0.00% | −31,477−100.0% | Sold out |
| Grandeur Peak Global Advisors, LLC | 0 | $0 | 0.00% | −20,408−100.0% | Sold out |
| Elo Mutual Pension Insurance Co | 0 | $0 | 0.00% | −18,164−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −16,925−100.0% | Sold out |