Marketaxess HoldingsMKTX
13F holders, Q1 2025 (March 31)510holders −8
74new positions
80sold out
6famous investors
$216.33avg. 13F price*
At the end of Q1 2025, 510 institutions reported holding Marketaxess Holdings Inc. (MKTX) in their 13F filings, down 8 from Q4 2024. 74 opened new positions and 80 sold out. The largest holders were Vanguard Group Inc. ($953.5M), BlackRock, Inc. ($563.7M) and T. Rowe Price Investment Management, Inc. ($502.6M). 6 famous investors held it, including Israel Englander (0.1% of Millennium Management's portfolio), Ken Griffin (0.1% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Marketaxess Holdings Inc.
- CUSIP
- 57060D108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 74 | $179.1M |
| Exits | 80 | $192.8M |
All 13F filers, Q4 2024 → Q1 2025: 4,285,349 shares bought and 4,735,525 shares sold, net −450,176 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 510 holders
| Vanguard Group Inc. | 0.02% | Reduce -0.6% | 4,407,136 | $953.5M |
| BlackRock, Inc. | 0.01% | Reduce -17.6% | 2,605,396 | $563.7M |
| T. Rowe Price Investment Management, Inc. | 0.33% | Add +1.1% | 2,323,015 | $502.6M |
| FMR LLC | 0.03% | Reduce -4.8% | 2,189,916 | $473.8M |
| Van Eck Associates Corp. | 0.57% | Add +0.3% | 2,005,916 | $434.0M |
| GUARDCAP ASSET MANAGEMENT Ltd | 6.38% | Reduce -13.6% | 1,523,006 | $329.5M |
| State Street Corp. | 0.01% | Reduce -10.1% | 1,465,406 | $317.0M |
| Primecap Management Co. | 0.24% | Reduce -0.6% | 1,361,512 | $294.6M |
| Geode Capital Management, LLC | 0.02% | Add +1.9% | 1,134,750 | $245.2M |
| Invesco Ltd. | 0.04% | Reduce -13.4% | 904,203 | $195.6M |
| Wasatch Advisors LP | 0.83% | Add +27.7% | 688,048 | $148.9M |
| Findlay Park Partners LLP | 1.51% | Add +1.4% | 680,000 | $147.1M |
| Millennium Management | 0.13% | Add +329.4% | 618,922 | $133.9M |
| Macquarie Group Ltd. | 0.16% | Reduce -14.9% | 612,747 | $132.6M |
| Norges Bank | 0.02% | Reduce -3.7% | 507,346 | $109.8M |
| Citadel Advisors | 0.10% | Add +371.6% | 474,345 | $102.6M |
| Dimensional Fund Advisors LP | 0.03% | Add +18.3% | 470,760 | $101.8M |
| JPMorgan Chase & Co. | 0.01% | Reduce -29.4% | 445,289 | $96.3M |
| Two Sigma Investments, LP | 0.21% | Add +49.3% | 430,522 | $93.1M |
| Burgundy Asset Management Ltd. | 0.90% | Add +64.8% | 402,511 | $87.1M |
| Bank of New York Mellon Corp | 0.02% | Reduce -11.8% | 389,054 | $84.2M |
| Charles Schwab Investment Management Inc. | 0.02% | Add +2.5% | 372,468 | $80.6M |
| North Reef Capital Management LP | 3.37% | Add +32.7% | 360,000 | $77.9M |
| Marshall Wace, LLP | 0.10% | Reduce -25.6% | 358,332 | $77.5M |
| Congress Asset Management Co. | 0.55% | Add +8.6% | 341,738 | $73.9M |
| Two Sigma Advisers, LP | 0.16% | Add +41.3% | 329,400 | $71.3M |
| Morgan Stanley | 0.00% | Reduce -6.3% | 314,549 | $68.1M |
| Northern Trust Corp. | 0.01% | Reduce -17.9% | 304,334 | $65.8M |
| UBS Group AG | 0.01% | Add +34.2% | 262,765 | $56.8M |
| Holocene Advisors, LP | 0.16% | New | 250,642 | $54.2M |
| Bank of America Corp. | 0.00% | Add +67.9% | 230,588 | $49.9M |
| NFJ Investment Group, LLC | 1.67% | Add +89.0% | 229,763 | $49.7M |
| Baird Financial Group, Inc. | 0.10% | Add +7.5% | 228,856 | $49.5M |
| American Century Companies Inc. | 0.03% | Add +999.6% | 222,342 | $48.1M |
| Baillie Gifford & Co. | 0.04% | Reduce -27.0% | 221,240 | $47.9M |
| Raymond James Financial Inc. | 0.02% | Reduce -1.4% | 201,022 | $43.5M |
| Assenagon Asset Management S.A. | 0.07% | Add +285.6% | 186,569 | $40.4M |
| TD Asset Management Inc | 0.04% | Reduce -0.1% | 184,904 | $40.0M |
| Deutsche Bank AG | 0.01% | Reduce -34.2% | 174,265 | $37.7M |
| Walleye Capital LLC | 0.43% | Add +56.3% | 160,052 | $34.6M |
| Bank of Montreal | 0.02% | Add +225.5% | 156,315 | $33.8M |
| GW&K Investment Management, LLC | 0.29% | Reduce -0.2% | 142,374 | $30.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Reduce -52.1% | 141,134 | $30.5M |
| Amundi | 0.01% | Reduce -32.9% | 137,620 | $29.7M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -27.3% | 133,769 | $28.9M |
| AQR Capital Management | 0.03% | Add +37.5% | 129,508 | $28.0M |
| Renaissance Technologies | 0.04% | Reduce -43.2% | 129,500 | $28.0M |
| Barclays PLC | 0.01% | Add +0.3% | 129,116 | $27.9M |
| Sei Investments Co. | 0.04% | Add +21.8% | 127,636 | $27.6M |
| Nuveen, LLC | 0.01% | — | 123,808 | $26.8M |
| Savant Capital, LLC | 0.21% | Reduce -3.2% | 115,994 | $25.1M |
| Janus Henderson Group PLC | 0.01% | Add +164.6% | 115,676 | $25.1M |
| D. E. Shaw & Co. | 0.03% | Add +696.0% | 112,480 | $24.3M |
| Schroder Investment Management Group | 0.02% | Add +21.5% | 111,918 | $24.3M |
| Balyasny Asset Management L.P. | 0.06% | Reduce -49.0% | 108,140 | $23.4M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.10% | Add +347.6% | 101,218 | $21.9M |
| Ossiam | 0.30% | New | 98,000 | $21.2M |
| Jackson Square Partners, LLC | 2.84% | Reduce -16.8% | 97,715 | $21.1M |
| Jane Street Group, LLC | 0.04% | Add +768.4% | 94,523 | $20.5M |
| Arrowstreet Capital, Limited Partnership | 0.02% | Add +6.3% | 88,922 | $19.2M |
| Westwood Holdings Group Inc. | 0.14% | Add +73.0% | 87,634 | $19.0M |
| BNP Paribas Financial Markets | 0.01% | Reduce -19.8% | 81,312 | $17.6M |
| HSBC Holdings PLC | 0.01% | Reduce -65.2% | 81,086 | $17.6M |
| Sone Capital Management, LLC | 1.80% | Add +89.6% | 80,913 | $17.5M |
| Kodai Capital Management LP | 0.67% | Reduce -43.1% | 77,944 | $16.9M |
| Rhumbline Advisers | 0.02% | Reduce -1.9% | 74,484 | $16.1M |
| Swiss National Bank | 0.01% | New | 73,100 | $15.8M |
| Goodman Financial Corp | 3.40% | New | 72,820 | $15.8M |
| Squarepoint Ops LLC | 0.04% | Add +256.4% | 72,138 | $15.6M |
| Legal & General Group Plc | 0.00% | Reduce -42.6% | 67,355 | $14.6M |
| California Public Employees Retirement System | 0.01% | Add +1.4% | 63,464 | $13.7M |
| Public Employees Retirement Association of Colorado | 0.06% | No change | 63,186 | $13.7M |
| Wilson Asset Management (international) PTY Ltd. | 3.50% | Add +26.6% | 60,492 | $13.1M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -5.8% | 59,404 | $12.9M |
| Robeco Institutional Asset Management B.V. | 0.02% | Reduce -28.6% | 59,315 | $12.8M |
| Los Angeles Capital Management LLC | 0.06% | Add +9.7% | 59,214 | $12.8M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -71.5% | 58,116 | $12.6M |
| Canada Pension Plan Investment Board | 0.01% | Add +4.0% | 51,689 | $11.2M |
| Citigroup Inc. | 0.01% | Add +3.9% | 49,941 | $10.8M |
| ExodusPoint Capital Management, LP | 0.14% | Add +2167.3% | 48,202 | $10.4M |
| Alps Advisors Inc. | 0.06% | Add +7.7% | 47,040 | $10.2M |
| Gillson Capital LP | 0.87% | New | 46,999 | $10.2M |
| Schonfeld Strategic Advisors LLC | 0.07% | Add +103.8% | 46,672 | $10.1M |
| Kornitzer Capital Management Inc. | 0.20% | Reduce -0.3% | 45,278 | $9.8M |
| Man Group plc | 0.03% | Reduce -26.9% | 44,875 | $9.7M |
| Prana Capital Management, LP | 0.39% | Add +32.5% | 44,411 | $9.6M |
| HRT Financial LP | 0.06% | Add +954.5% | 44,026 | $9.5M |
| Principal Financial Group Inc. | 0.01% | Reduce -6.2% | 43,813 | $9.5M |
| Kingsview Wealth Management, LLC | 0.17% | Add +14.7% | 42,387 | $9.2M |
| Bahl & Gaynor LLC | 0.04% | Reduce -4.6% | 40,149 | $8.7M |
| Royal Bank of Canada | 0.00% | Reduce -24.7% | 39,930 | $8.6M |
| Alliancebernstein L.P. | 0.00% | Reduce -0.4% | 38,550 | $8.3M |
| CW Advisors, LLC | 0.10% | Add +27.8% | 38,296 | $8.3M |
| Algert Global LLC | 0.20% | Add +292.9% | 38,108 | $8.2M |
| ICICI Prudential Asset Management Co Ltd | 1.07% | No change | 37,889 | $8.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.01% | Reduce -37.4% | 37,357 | $8.1M |
| Norris Perne & French LLP | 0.60% | Add +2.3% | 36,744 | $7.9M |
| California State Teachers Retirement System | 0.01% | Reduce -38.0% | 35,971 | $7.8M |
| State of Wisconsin Investment Board | 0.02% | Add +21.7% | 35,011 | $7.6M |
| State Board of Administration of Florida Retirement System | 0.01% | Reduce -5.8% | 34,852 | $7.5M |
"% of holder's portfolio" is MKTX's weight in each manager's 13F, not the share of Marketaxess Holdings Inc. the manager owns.