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, Q1 2026
Institutional positions in Marketaxess Holdings Inc as of Mar 31, 2026. 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
- 452
- −27 vs. Q4 2025
- Shares held
- 38.2M
- +6.09M (+18.9%) vs. Q4 2025
- Total value
- $6.31B
- +$482.8M (+8.3%) vs. Q4 2025
- New holders
- 63
- 182 more added
- Sold out
- 90
- 150 more reduced
8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Flossbach Von Storch AG | 108,100 | $17.8M | 0.08% | +15,000+16.1% | Added |
| Davis Asset Management, L.P. | 108,846 | $18.0M | 0.52% | +108,846 | New |
| Eubel Brady & Suttman Asset Management Inc | 111,483 | $18.4M | 2.18% | +111,483 | New |
| Invesco Ltd. | 118,332 | $19.5M | 0.00% | +3,713+3.2% | Added |
| Raymond James Financial Inc | 121,635 | $20.1M | 0.01% | +8,170+7.2% | Added |
| HRT Financial LP | 136,952 | $22.6M | 0.06% | −77,149−36.0% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 145,628 | $24.0M | 0.04% | +114,934+374.5% | Added |
| Nuveen, LLC | 148,081 | $24.4M | 0.01% | +13,557+10.1% | Added |
| Sone Capital Management, LLC | 159,966 | $26.4M | 2.22% | +149,611+1,444.8% | Added |
| Renaissance Technologies LLC | 167,100 | $27.6M | 0.04% | −8,900−5.1% | Reduced |
| Janus Henderson Group PLC | 168,797 | $27.8M | 0.01% | +350+0.2% | Added |
| Ieq Capital, LLC | 173,891 | $28.7M | 0.13% | −15,435−8.2% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 174,059 | $28.7M | 0.07% | +3,494+2.0% | Added |
| Principal Financial Group Inc | 181,798 | $30.0M | 0.02% | +3,725+2.1% | Added |
| Public Sector Pension Investment Board | 192,230 | $31.7M | 0.10% | +63,530+49.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 203,425 | $33.6M | 0.04% | +12,942+6.8% | Added |
| Victory Capital Management Inc | 204,932 | $33.8M | 0.02% | +111,262+118.8% | Added |
| Champlain Investment Partners, LLC | 210,076 | $34.7M | 0.44% | +106,765+103.3% | Added |
| Cooke & Bieler LP | 226,220 | $37.3M | 0.42% | +122,120+117.3% | Added |
| Vanguard Fiduciary Trust Co | 229,427 | $37.9M | 0.01% | +229,427 | New |
| Northern Trust Corp | 236,350 | $39.0M | 0.01% | +2,044+0.9% | Added |
| Driehaus Capital Management LLC | 239,256 | $39.5M | 0.29% | +239,256 | New |
| Point72 Asset Management, L.P. | 252,825 | $41.7M | 0.07% | +252,825 | New |
| Amundi | 258,708 | $42.7M | 0.01% | +230,087+803.9% | Added |
| Bank of America Corp | 263,858 | $43.5M | 0.00% | +64,627+32.4% | Added |
| UBS Group AG | 272,238 | $44.9M | 0.01% | +170,283+167.0% | Added |
| Bank of New York Mellon Corp | 289,940 | $47.8M | 0.01% | −8,788−2.9% | Reduced |
| RDST Capital LLC | 295,267 | $48.7M | 4.69% | −15,430−5.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 295,470 | $48.7M | 0.03% | +6,728+2.3% | Added |
| BNP Paribas Arbitrage, SA | 319,302 | $52.7M | 0.03% | −56,433−15.0% | Reduced |
| Walleye Capital LLC | 332,723 | $54.9M | 0.34% | +164,035+97.2% | Added |
| Charles Schwab Investment Management Inc | 338,507 | $55.8M | 0.01% | +20,121+6.3% | Added |
| JPMorgan Chase & Co | 432,826 | $71.3M | 0.00% | −112,538−20.6% | Reduced |
| Findlay Park Partners LLP | 480,600 | $79.3M | 1.11% | −55,800−10.4% | Reduced |
| Morgan Stanley | 490,537 | $80.9M | 0.00% | +65,660+15.5% | Added |
| Goldman Sachs Group Inc | 509,043 | $84.0M | 0.01% | +336,445+194.9% | Added |
| Two Sigma Investments, LP | 524,024 | $86.5M | 0.07% | −9,503−1.8% | Reduced |
| Dimensional Fund Advisors LP | 581,484 | $95.9M | 0.02% | +54,503+10.3% | Added |
| Guardcap Asset Management Ltd | 643,370 | $106.4M | 6.09% | −510,208−44.2% | Reduced |
| Geode Capital Management, LLC | 862,987 | $142.4M | 0.01% | +29,920+3.6% | Added |
| Neuberger Berman Group LLC | 966,029 | $159.4M | 0.12% | +416,390+75.8% | Added |
| Bank of Montreal | 1,020,559 | $168.4M | 0.07% | +69,535+7.3% | Added |
| Millennium Management LLC | 1,087,188 | $179.4M | 0.13% | +785,523+260.4% | Added |
| Van Eck Associates Corp | 1,239,285 | $204.5M | 0.15% | +24,318+2.0% | Added |
| State Street Corp | 1,280,857 | $211.3M | 0.01% | +32,543+2.6% | Added |
| FMR LLC | 1,519,421 | $250.7M | 0.01% | −485,204−24.2% | Reduced |
| Vanguard Capital Management LLC | 1,609,259 | $265.5M | 0.01% | +1,609,259 | New |
| North Reef Capital Management LP | 1,875,000 | $309.3M | 10.65% | +265,670+16.5% | Added |
| Vanguard Portfolio Management LLC | 2,163,671 | $357.0M | 0.02% | +2,163,671 | New |
| AQR Capital Management LLC | 2,683,745 | $442.8M | 0.20% | +125,648+4.9% | Added |
| Primecap Management Co | 3,347,125 | $552.2M | 0.43% | +171,700+5.4% | Added |
| BlackRock, Inc. | 4,075,154 | $672.3M | 0.01% | +328,682+8.8% | Added |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −171,600−100.0% | Sold out |
| Gillson Capital LP | 0 | $0 | 0.00% | −80,563−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −80,135−100.0% | Sold out |
| BW Gestao de Investimentos Ltda. | 0 | $0 | 0.00% | −49,500−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −39,174−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −33,473−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −32,396−100.0% | Sold out |
| Robeco Institutional Asset Management B.V. | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −23,589−100.0% | Sold out |
| FJ Capital Management LLC | 0 | $0 | 0.00% | −20,252−100.0% | Sold out |
| D.A. Davidson & Co. | 0 | $0 | 0.00% | −20,234−100.0% | Sold out |
| Alamar Capital Management, LLC | 0 | $0 | 0.00% | −15,612−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −13,612−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −13,054−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −12,659−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −11,460−100.0% | Sold out |
| Gator Capital Management, LLC | 0 | $0 | 0.00% | −11,119−100.0% | Sold out |
| Lecap Asset Management Ltd | 0 | $0 | 0.00% | −10,596−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −9,341−100.0% | Sold out |
| Dockside LLC | 0 | $0 | 0.00% | −7,619−100.0% | Sold out |
| MUFG Securities EMEA plc | 0 | $0 | 0.00% | −7,530−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −6,019−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −5,168−100.0% | Sold out |
| AIA Group Ltd | 0 | $0 | 0.00% | −4,573−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −4,288−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −4,182−100.0% | Sold out |
| Purpose Unlimited Inc. | 0 | $0 | 0.00% | −4,054−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −3,430−100.0% | Sold out |
| MYDA Advisors LLC | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Formidable Asset Management, LLC | 0 | $0 | 0.00% | −2,963−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −2,835−100.0% | Sold out |
| Nia Impact Advisors, LLC | 0 | $0 | 0.00% | −2,665−100.0% | Sold out |
| Unique Wealth Strategies, LLC | 0 | $0 | 0.00% | −2,274−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −2,266−100.0% | Sold out |
| Perigon Wealth Management, LLC | 0 | $0 | 0.00% | −2,100−100.0% | Sold out |
| Kaufman Rossin Wealth, LLC | 0 | $0 | 0.00% | −2,074−100.0% | Sold out |
| Ashford Capital Management Inc | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| Groupama Asset Managment | 0 | $0 | 0.00% | −1,995−100.0% | Sold out |
| Sequoia Financial Advisors, LLC | 0 | $0 | 0.00% | −1,877−100.0% | Sold out |
| Banque Pictet & Cie SA | 0 | $0 | 0.00% | −1,820−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −1,724−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −1,594−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −1,564−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −1,475−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −1,473−100.0% | Sold out |
| EP Wealth Advisors, LLC | 0 | $0 | 0.00% | −1,468−100.0% | Sold out |
| Catalyst Funds Management Pty Ltd | 0 | $0 | 0.00% | −1,400−100.0% | Sold out |
| Savvy Advisors, Inc. | 0 | $0 | 0.00% | −1,389−100.0% | Sold out |