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; 398 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
- 398
- −49 vs. Q1 2026
- Shares held
- 39.2M
- +1.17M (+3.1%) vs. Q1 2026
- Total value
- $4.44B
- −$1.83B (−29.1%) vs. Q1 2026
- New holders
- 57
- 131 more added
- Sold out
- 106
- 172 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 | 398 | $4.44B |
| Q1 2026 | 452 | $6.31B |
| Q4 2025 | 487 | $6.64B |
| Q3 2025 | 452 | $6.30B |
| Q2 2025 | 531 | $8.28B |
| Q1 2025 | 511 | $8.06B |
| Q4 2024 | 520 | $8.52B |
| Q3 2024 | 511 | $9.58B |
| Q2 2024 | 468 | $7.62B |
| Q1 2024 | 463 | $8.36B |
| Q4 2023 | 506 | $11.1B |
| Q3 2023 | 485 | $7.99B |
| Q2 2023 | 514 | $9.90B |
| Q1 2023 | 540 | $14.6B |
| Q4 2022 | 501 | $10.3B |
| Q3 2022 | 482 | $8.20B |
| Q2 2022 | 505 | $9.31B |
| Q1 2022 | 506 | $12.4B |
| Q4 2021 | 505 | $15.1B |
| Q3 2021 | 508 | $15.3B |
| Q2 2021 | 551 | $16.8B |
| Q1 2021 | 589 | $17.8B |
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,999,836 | $453.9M | 0.01% | −75,318−1.8% | Reduced |
| Primecap Management Co | 3,504,905 | $397.8M | 0.24% | +157,780+4.7% | Added |
| North Reef Capital Management LP | 3,395,000 | $385.3M | 14.77% | +1,520,000+81.1% | Added |
| Vanguard Portfolio Management LLC | 2,100,273 | $238.4M | 0.01% | −63,398−2.9% | Reduced |
| AQR Capital Management LLC | 1,987,288 | $222.8M | 0.08% | −696,457−26.0% | Reduced |
| Vanguard Capital Management LLC | 1,546,670 | $175.5M | 0.00% | −62,589−3.9% | Reduced |
| FMR LLC | 1,404,998 | $159.5M | 0.01% | −114,423−7.5% | Reduced |
| State Street Corp | 1,281,769 | $145.4M | 0.00% | +912+0.1% | Added |
| Neuberger Berman Group LLC | 1,229,929 | $139.6M | 0.09% | +263,900+27.3% | Added |
| Goldman Sachs Group Inc | 1,031,309 | $117.0M | 0.01% | +522,266+102.6% | Added |
| Bank of Montreal | 1,017,024 | $115.4M | 0.04% | −3,535−0.3% | Reduced |
| Geode Capital Management, LLC | 994,772 | $112.9M | 0.01% | +131,785+15.3% | Added |
| Van Eck Associates Corp | 924,617 | $104.9M | 0.06% | −314,668−25.4% | Reduced |
| Dimensional Fund Advisors LP | 597,894 | $67.8M | 0.01% | +16,410+2.8% | Added |
| Norges Bank | 572,422 | $65.0M | 0.01% | +572,422 | New |
| Guardcap Asset Management Ltd | 536,324 | $62.2M | 4.42% | −107,046−16.6% | Reduced |
| Two Sigma Investments, LP | 543,890 | $61.7M | 0.05% | +19,866+3.8% | Added |
| Azora Capital LP | 513,081 | $58.2M | 2.45% | +513,081 | New |
| Davis Asset Management, L.P. | 500,000 | $56.7M | 1.44% | +391,154+359.4% | Added |
| Citadel Advisors LLC | 481,689 | $54.7M | 0.03% | +399,530+486.3% | Added |
| JPMorgan Chase & Co | 438,001 | $48.3M | 0.00% | +5,175+1.2% | Added |
| Morgan Stanley | 422,864 | $48.0M | 0.00% | −67,673−13.8% | Reduced |
| Los Angeles Capital Management LLC | 392,065 | $44.5M | 0.16% | +382,484+3,992.1% | Added |
| Charles Schwab Investment Management Inc | 330,815 | $37.5M | 0.00% | −7,692−2.3% | Reduced |
| Bank of America Corp | 303,517 | $34.4M | 0.00% | +39,659+15.0% | Added |
| UBS Group AG | 278,745 | $31.6M | 0.01% | +6,507+2.4% | Added |
| Bank of New York Mellon Corp | 257,642 | $29.2M | 0.00% | −32,298−11.1% | Reduced |
| RDST Capital LLC | 247,112 | $28.0M | 2.32% | −48,155−16.3% | Reduced |
| Northern Trust Corp | 246,521 | $28.0M | 0.00% | +10,171+4.3% | Added |
| Cooke & Bieler LP | 238,755 | $27.1M | 0.31% | +12,535+5.5% | Added |
| Vanguard Fiduciary Trust Co | 223,656 | $25.4M | 0.01% | −5,771−2.5% | Reduced |
| HRT Financial LP | 205,854 | $23.4M | 0.04% | +68,902+50.3% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 204,309 | $23.2M | 0.02% | +884+0.4% | Added |
| Victory Capital Management Inc | 202,731 | $23.0M | 0.01% | −2,201−1.1% | Reduced |
| Renaissance Technologies LLC | 200,000 | $22.7M | 0.03% | +32,900+19.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 186,658 | $21.2M | 0.04% | +12,599+7.2% | Added |
| Principal Financial Group Inc | 173,312 | $19.7M | 0.01% | −8,486−4.7% | Reduced |
| Freestone Grove Partners LP | 172,799 | $19.6M | 0.13% | +172,799 | New |
| Public Sector Pension Investment Board | 157,338 | $17.9M | 0.05% | −34,892−18.2% | Reduced |
| Sone Capital Management, LLC | 155,522 | $17.7M | 1.34% | −4,444−2.8% | Reduced |
| Nuveen, LLC | 148,468 | $16.8M | 0.00% | +387+0.3% | Added |
| Invesco Ltd. | 140,817 | $16.0M | 0.00% | +22,485+19.0% | Added |
| Tudor Investment Corp Et Al | 137,847 | $15.6M | 0.06% | +137,847 | New |
| Champlain Investment Partners, LLC | 136,087 | $15.4M | 0.40% | −73,989−35.2% | Reduced |
| Arrowstreet Capital, Limited Partnership | 122,005 | $13.8M | 0.01% | −173,465−58.7% | Reduced |
| M&G Plc | 121,309 | $13.7M | 0.07% | +121,309 | New |
| Bank of Nova Scotia | 115,410 | $13.1M | 0.02% | +90,798+368.9% | Added |
| CIBC Bancorp USA Inc. | 114,968 | $13.0M | 0.02% | +111,658+3,373.4% | Added |
| Eubel Brady & Suttman Asset Management Inc | 114,292 | $13.0M | 1.54% | +2,809+2.5% | Added |
| Raymond James Financial Inc | 114,278 | $13.0M | 0.00% | −7,357−6.0% | Reduced |
| Algert Global LLC | 112,400 | $12.8M | 0.15% | +92,960+478.2% | Added |
| Millennium Management LLC | 109,590 | $12.4M | 0.01% | −977,598−89.9% | Reduced |
| Heartland Advisors Inc | 104,926 | $11.9M | 0.53% | +46,592+79.9% | Added |
| UBS Asset Management Americas Inc | 104,853 | $11.9M | 0.00% | −2,257−2.1% | Reduced |
| First Eagle Investment Management, LLC | 99,154 | $11.3M | 0.01% | +99,132+450,600.0% | Added |
| Walleye Capital LLC | 94,002 | $10.7M | 0.05% | −238,721−71.7% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 92,100 | $10.5M | 0.01% | −53,528−36.8% | Reduced |
| Invenomic Capital Management LP | 90,441 | $10.3M | 0.61% | +90,441 | New |
| Legal & General Group Plc | 84,460 | $9.59M | 0.00% | −6,260−6.9% | Reduced |
| Ameriprise Financial Inc | 79,372 | $9.01M | 0.00% | +9,487+13.6% | Added |
| Jump Financial, LLC | 78,566 | $8.92M | 0.08% | +66,010+525.7% | Added |
| CIBC World Markets Inc. | 78,286 | $8.88M | 0.01% | +74,294+1,861.1% | Added |
| Jane Street Group, LLC | 77,353 | $8.78M | 0.01% | +64,613+507.2% | Added |
| Flossbach Von Storch AG | 75,000 | $8.51M | 0.04% | −33,100−30.6% | Reduced |
| Rhumbline Advisers | 72,725 | $8.25M | 0.01% | −17,236−19.2% | Reduced |
| Swiss National Bank | 71,400 | $8.10M | 0.00% | −2,300−3.1% | Reduced |
| Trexquant Investment LP | 66,681 | $7.57M | 0.05% | −3,697−5.3% | Reduced |
| Citigroup Inc | 64,762 | $7.35M | 0.00% | +43,372+202.8% | Added |
| Alpha Omega Wealth Management LLC | 61,453 | $6.97M | 1.06% | +50,558+464.0% | Added |
| Stifel Financial Corp | 56,622 | $6.43M | 0.01% | +20,925+58.6% | Added |
| SEI Investments Co | 56,022 | $6.36M | 0.01% | +25,791+85.3% | Added |
| Y-Intercept (Hong Kong) Ltd | 54,792 | $6.22M | 0.12% | +51,738+1,694.1% | Added |
| Van Den Berg Management I, Inc | 52,054 | $5.91M | 1.25% | +20,631+65.7% | Added |
| Brevan Howard Capital Management LP | 51,050 | $5.79M | 0.08% | +51,050 | New |
| State of Wisconsin Investment Board | 51,004 | $5.79M | 0.01% | +15,532+43.8% | Added |
| California Public Employees Retirement System | 49,950 | $5.67M | 0.00% | −22,572−31.1% | Reduced |
| D. E. Shaw & Co., Inc. | 47,977 | $5.44M | 0.00% | +44,663+1,347.7% | Added |
| Quantinno Capital Management LP | 47,575 | $5.40M | 0.01% | +585+1.2% | Added |
| First Trust Advisors LP | 46,658 | $5.30M | 0.00% | +7,166+18.1% | Added |
| Wilson Asset Management (International) Pty Ltd | 45,042 | $5.11M | 1.40% | +5,581+14.1% | Added |
| Mariner, LLC | 44,790 | $5.08M | 0.01% | −34,354−43.4% | Reduced |
| Cerity Partners LLC | 44,382 | $5.04M | 0.01% | −39,619−47.2% | Reduced |
| American Century Companies Inc | 44,363 | $5.03M | 0.00% | +28,171+174.0% | Added |
| T. Rowe Price Investment Management, Inc. | 43,842 | $4.98M | 0.00% | −436−1.0% | Reduced |
| California State Teachers Retirement System | 42,443 | $4.82M | 0.00% | −1,245−2.8% | Reduced |
| DF Dent & Co Inc | 39,303 | $4.46M | 0.08% | −1,697−4.1% | Reduced |
| Royal Bank of Canada | 39,121 | $4.44M | 0.00% | +8,198+26.5% | Added |
| Marshall Wace, LLP | 39,090 | $4.44M | 0.00% | +39,090 | New |
| Price T Rowe Associates Inc | 38,521 | $4.37M | 0.00% | +1,601+4.3% | Added |
| Holocene Advisors, LP | 38,269 | $4.34M | 0.01% | −5,530−12.6% | Reduced |
| Prana Capital Management, LP | 37,877 | $4.30M | 0.13% | +6,284+19.9% | Added |
| Corebridge Financial, Inc. | 38,650 | $4.25M | 100.00% | +38,650 | New |
| FJ Capital Management LLC | 37,237 | $4.23M | 0.55% | +37,237 | New |
| Taylor Hoffman Capital Management LLC | 35,895 | $4.07M | 0.99% | +7,032+24.4% | Added |
| BNP Paribas Arbitrage, SA | 35,288 | $4.00M | 0.00% | −284,014−88.9% | Reduced |
| State Board of Administration of Florida Retirement System | 34,407 | $3.90M | 0.01% | −630−1.8% | Reduced |
| Readystate Asset Management LP | 33,794 | $3.84M | 0.16% | +8,859+35.5% | Added |
| HSBC Holdings PLC | 33,576 | $3.81M | 0.00% | +12,567+59.8% | Added |
| Vanguard Asset Management, Ltd | 33,563 | $3.81M | 0.00% | +97+0.3% | Added |
| GW&K Investment Management, LLC | 32,689 | $3.71M | 0.03% | −80.0% | Reduced |