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, Q2 2026
Institutional positions in Marketaxess Holdings Inc as of Jun 30, 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
- 397
- −50 vs. Q1 2026
- Shares held
- 39.1M
- +1.10M (+2.9%) vs. Q1 2026
- Total value
- $4.44B
- −$1.83B (−29.2%) vs. Q1 2026
- New holders
- 57
- 130 more added
- Sold out
- 107
- 171 more reduced
5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Readystate Asset Management LP | 33,794 | $3.84M | 0.16% | +8,859+35.5% | Added |
| State Board of Administration of Florida Retirement System | 34,407 | $3.90M | 0.01% | −630−1.8% | Reduced |
| BNP Paribas Arbitrage, SA | 35,288 | $4.00M | 0.00% | −284,014−88.9% | Reduced |
| Taylor Hoffman Capital Management LLC | 35,895 | $4.07M | 0.99% | +7,032+24.4% | Added |
| FJ Capital Management LLC | 37,237 | $4.23M | 0.55% | +37,237 | New |
| Corebridge Financial, Inc. | 38,650 | $4.25M | 100.00% | +38,650 | New |
| Prana Capital Management, LP | 37,877 | $4.30M | 0.13% | +6,284+19.9% | Added |
| Holocene Advisors, LP | 38,269 | $4.34M | 0.01% | −5,530−12.6% | Reduced |
| Price T Rowe Associates Inc | 38,521 | $4.37M | 0.00% | +1,601+4.3% | Added |
| Marshall Wace, LLP | 39,090 | $4.44M | 0.00% | +39,090 | New |
| Royal Bank of Canada | 39,121 | $4.44M | 0.00% | +8,198+26.5% | Added |
| DF Dent & Co Inc | 39,303 | $4.46M | 0.08% | −1,697−4.1% | Reduced |
| California State Teachers Retirement System | 42,443 | $4.82M | 0.00% | −1,245−2.8% | Reduced |
| T. Rowe Price Investment Management, Inc. | 43,842 | $4.98M | 0.00% | −436−1.0% | Reduced |
| American Century Companies Inc | 44,363 | $5.03M | 0.00% | +28,171+174.0% | Added |
| Cerity Partners LLC | 44,382 | $5.04M | 0.01% | −39,619−47.2% | Reduced |
| Mariner, LLC | 44,790 | $5.08M | 0.01% | −34,354−43.4% | Reduced |
| Wilson Asset Management (International) Pty Ltd | 45,042 | $5.11M | 1.40% | +5,581+14.1% | Added |
| First Trust Advisors LP | 46,658 | $5.30M | 0.00% | +7,166+18.1% | Added |
| Quantinno Capital Management LP | 47,575 | $5.40M | 0.01% | +585+1.2% | Added |
| D. E. Shaw & Co., Inc. | 47,977 | $5.44M | 0.00% | +44,663+1,347.7% | Added |
| First Eagle Investment Management, LLC | 49,577 | $5.63M | 0.01% | +49,555+225,250.0% | Added |
| California Public Employees Retirement System | 49,950 | $5.67M | 0.00% | −22,572−31.1% | Reduced |
| State of Wisconsin Investment Board | 51,004 | $5.79M | 0.01% | +15,532+43.8% | Added |
| Brevan Howard Capital Management LP | 51,050 | $5.79M | 0.08% | +51,050 | New |
| Van Den Berg Management I, Inc | 52,054 | $5.91M | 1.25% | +20,631+65.7% | Added |
| Y-Intercept (Hong Kong) Ltd | 54,792 | $6.22M | 0.12% | +51,738+1,694.1% | Added |
| SEI Investments Co | 56,022 | $6.36M | 0.01% | +25,791+85.3% | Added |
| Stifel Financial Corp | 56,622 | $6.43M | 0.01% | +20,925+58.6% | Added |
| Alpha Omega Wealth Management LLC | 61,453 | $6.97M | 1.06% | +50,558+464.0% | Added |
| Citigroup Inc | 64,762 | $7.35M | 0.00% | +43,372+202.8% | Added |
| Trexquant Investment LP | 66,681 | $7.57M | 0.05% | −3,697−5.3% | Reduced |
| Swiss National Bank | 71,400 | $8.10M | 0.00% | −2,300−3.1% | Reduced |
| Rhumbline Advisers | 72,725 | $8.25M | 0.01% | −17,236−19.2% | Reduced |
| Flossbach Von Storch AG | 75,000 | $8.51M | 0.04% | −33,100−30.6% | Reduced |
| Jane Street Group, LLC | 77,353 | $8.78M | 0.01% | +64,613+507.2% | Added |
| CIBC World Markets Inc. | 78,286 | $8.88M | 0.01% | +74,294+1,861.1% | Added |
| Jump Financial, LLC | 78,566 | $8.92M | 0.08% | +66,010+525.7% | Added |
| Ameriprise Financial Inc | 79,372 | $9.01M | 0.00% | +9,487+13.6% | Added |
| Legal & General Group Plc | 84,460 | $9.59M | 0.00% | −6,260−6.9% | Reduced |
| Invenomic Capital Management LP | 90,441 | $10.3M | 0.61% | +90,441 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 92,100 | $10.5M | 0.01% | −53,528−36.8% | Reduced |
| Walleye Capital LLC | 94,002 | $10.7M | 0.05% | −238,721−71.7% | Reduced |
| UBS Asset Management Americas Inc | 104,853 | $11.9M | 0.00% | −2,257−2.1% | Reduced |
| Heartland Advisors Inc | 104,926 | $11.9M | 0.53% | +46,592+79.9% | Added |
| Millennium Management LLC | 109,590 | $12.4M | 0.01% | −977,598−89.9% | Reduced |
| Algert Global LLC | 112,400 | $12.8M | 0.15% | +92,960+478.2% | Added |
| Raymond James Financial Inc | 114,278 | $13.0M | 0.00% | −7,357−6.0% | Reduced |
| Eubel Brady & Suttman Asset Management Inc | 114,292 | $13.0M | 1.54% | +2,809+2.5% | Added |
| CIBC Bancorp USA Inc. | 114,968 | $13.0M | 0.02% | +111,658+3,373.4% | Added |
| Bank of Nova Scotia | 115,410 | $13.1M | 0.02% | +90,798+368.9% | Added |
| M&G Plc | 121,309 | $13.7M | 0.07% | +121,309 | New |
| Arrowstreet Capital, Limited Partnership | 122,005 | $13.8M | 0.01% | −173,465−58.7% | Reduced |
| Champlain Investment Partners, LLC | 136,087 | $15.4M | 0.40% | −73,989−35.2% | Reduced |
| Tudor Investment Corp Et Al | 137,847 | $15.6M | 0.06% | +137,847 | New |
| Invesco Ltd. | 140,817 | $16.0M | 0.00% | +22,485+19.0% | Added |
| Nuveen, LLC | 148,468 | $16.8M | 0.00% | +387+0.3% | Added |
| Sone Capital Management, LLC | 155,522 | $17.7M | 1.34% | −4,444−2.8% | Reduced |
| Public Sector Pension Investment Board | 157,338 | $17.9M | 0.05% | −34,892−18.2% | Reduced |
| Freestone Grove Partners LP | 172,799 | $19.6M | 0.13% | +172,799 | New |
| Principal Financial Group Inc | 173,312 | $19.7M | 0.01% | −8,486−4.7% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 186,658 | $21.2M | 0.04% | +12,599+7.2% | Added |
| Renaissance Technologies LLC | 200,000 | $22.7M | 0.03% | +32,900+19.7% | Added |
| Victory Capital Management Inc | 202,731 | $23.0M | 0.01% | −2,201−1.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 204,309 | $23.2M | 0.02% | +884+0.4% | Added |
| HRT Financial LP | 205,854 | $23.4M | 0.04% | +68,902+50.3% | Added |
| Vanguard Fiduciary Trust Co | 223,656 | $25.4M | 0.01% | −5,771−2.5% | Reduced |
| Cooke & Bieler LP | 238,755 | $27.1M | 0.31% | +12,535+5.5% | Added |
| Northern Trust Corp | 246,521 | $28.0M | 0.00% | +10,171+4.3% | Added |
| RDST Capital LLC | 247,112 | $28.0M | 2.32% | −48,155−16.3% | Reduced |
| Bank of New York Mellon Corp | 257,642 | $29.2M | 0.00% | −32,298−11.1% | Reduced |
| UBS Group AG | 278,745 | $31.6M | 0.01% | +6,507+2.4% | Added |
| Bank of America Corp | 303,517 | $34.4M | 0.00% | +39,659+15.0% | Added |
| Charles Schwab Investment Management Inc | 330,815 | $37.5M | 0.00% | −7,692−2.3% | Reduced |
| Los Angeles Capital Management LLC | 392,065 | $44.5M | 0.16% | +382,484+3,992.1% | Added |
| Morgan Stanley | 422,864 | $48.0M | 0.00% | −67,673−13.8% | Reduced |
| JPMorgan Chase & Co | 438,001 | $48.3M | 0.00% | +5,175+1.2% | Added |
| Citadel Advisors LLC | 481,689 | $54.7M | 0.03% | +399,530+486.3% | Added |
| Davis Asset Management, L.P. | 500,000 | $56.7M | 1.44% | +391,154+359.4% | Added |
| Azora Capital LP | 513,081 | $58.2M | 2.45% | +513,081 | New |
| Two Sigma Investments, LP | 543,890 | $61.7M | 0.05% | +19,866+3.8% | Added |
| Guardcap Asset Management Ltd | 536,324 | $62.2M | 4.42% | −107,046−16.6% | Reduced |
| Norges Bank | 572,422 | $65.0M | 0.01% | +572,422 | New |
| Dimensional Fund Advisors LP | 597,894 | $67.8M | 0.01% | +16,410+2.8% | Added |
| Van Eck Associates Corp | 924,617 | $104.9M | 0.06% | −314,668−25.4% | Reduced |
| Geode Capital Management, LLC | 994,772 | $112.9M | 0.01% | +131,785+15.3% | Added |
| Bank of Montreal | 1,017,024 | $115.4M | 0.04% | −3,535−0.3% | Reduced |
| Goldman Sachs Group Inc | 1,031,309 | $117.0M | 0.01% | +522,266+102.6% | Added |
| Neuberger Berman Group LLC | 1,229,929 | $139.6M | 0.09% | +263,900+27.3% | Added |
| State Street Corp | 1,281,769 | $145.4M | 0.00% | +912+0.1% | Added |
| FMR LLC | 1,404,998 | $159.5M | 0.01% | −114,423−7.5% | Reduced |
| Vanguard Capital Management LLC | 1,546,670 | $175.5M | 0.00% | −62,589−3.9% | Reduced |
| AQR Capital Management LLC | 1,987,288 | $222.8M | 0.08% | −696,457−26.0% | Reduced |
| Vanguard Portfolio Management LLC | 2,100,273 | $238.4M | 0.01% | −63,398−2.9% | Reduced |
| North Reef Capital Management LP | 3,395,000 | $385.3M | 14.77% | +1,520,000+81.1% | Added |
| Primecap Management Co | 3,504,905 | $397.8M | 0.24% | +157,780+4.7% | Added |
| BlackRock, Inc. | 3,999,836 | $453.9M | 0.01% | −75,318−1.8% | Reduced |
| Findlay Park Partners LLP | 0 | $0 | 0.00% | −480,600−100.0% | Sold out |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −239,256−100.0% | Sold out |
| Polar Asset Management Partners Inc. | 0 | $0 | 0.00% | −104,174−100.0% | Sold out |