Marketaxess HoldingsMKTX
13F holders, Q3 2025 (September 30)452holders −79
61new positions
134sold out
8famous investors
$174.42avg. 13F price*
At the end of Q3 2025, 452 institutions reported holding Marketaxess Holdings Inc. (MKTX) in their 13F filings, down 79 from Q2 2025. 61 opened new positions and 134 sold out. The largest holders were Vanguard Group Inc. ($671.6M), Primecap Management Co. ($388.7M) and FMR LLC ($373.6M). 8 famous investors held it, including Paul Tudor Jones (0.2% of Tudor Investment Corporation's portfolio), Cliff Asness (0.1% of AQR Capital Management's portfolio) and Israel Englander (0.1% of Millennium Management's portfolio).
- Company
- Marketaxess Holdings Inc.
- CUSIP
- 57060D108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 61 | $79.6M |
| Exits | 134 | $273.5M |
All 13F filers, Q2 2025 → Q3 2025: 7,410,042 shares bought and 8,193,911 shares sold, net −783,869 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 452 holders
| Vanguard Group Inc. | 0.01% | Reduce -11.6% | 3,854,312 | $671.6M |
| Primecap Management Co. | 0.30% | Add +66.5% | 2,230,595 | $388.7M |
| FMR LLC | 0.02% | Reduce -8.1% | 2,143,921 | $373.6M |
| Van Eck Associates Corp. | 0.32% | Add +6.5% | 1,948,633 | $339.5M |
| BlackRock, Inc. | 0.01% | Reduce -30.2% | 1,850,409 | $322.4M |
| HSBC Holdings PLC | 0.19% | Add +2977.4% | 1,798,766 | $315.4M |
| T. Rowe Price Investment Management, Inc. | 0.15% | Reduce -41.2% | 1,370,694 | $238.8M |
| GUARDCAP ASSET MANAGEMENT Ltd | 5.50% | Reduce -9.2% | 1,361,264 | $237.2M |
| State Street Corp. | 0.01% | Reduce -13.8% | 1,320,657 | $230.1M |
| AQR Capital Management | 0.11% | Add +25.4% | 951,088 | $165.7M |
| North Reef Capital Management LP | 7.43% | Add +117.0% | 911,358 | $158.8M |
| Geode Capital Management, LLC | 0.01% | Reduce -27.2% | 830,996 | $144.8M |
| Burgundy Asset Management Ltd. | 1.20% | Add +67.0% | 692,216 | $127.3M |
| Findlay Park Partners LLP | 1.18% | Reduce -1.8% | 644,700 | $112.3M |
| Millennium Management | 0.09% | Add +40.6% | 607,556 | $105.9M |
| Morgan Stanley | 0.01% | Add +29.2% | 549,023 | $95.7M |
| Dimensional Fund Advisors LP | 0.02% | Add +1.9% | 521,129 | $90.8M |
| BNP Paribas Financial Markets | 0.07% | Add +469.1% | 486,106 | $84.7M |
| JPMorgan Chase & Co. | 0.01% | Add +6.9% | 447,925 | $78.1M |
| Bank of New York Mellon Corp | 0.01% | Add +0.1% | 376,550 | $65.6M |
| Two Sigma Investments, LP | 0.10% | Add +30.1% | 364,384 | $63.5M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -14.0% | 315,148 | $54.9M |
| Citadel Advisors | 0.04% | Reduce -11.7% | 310,086 | $54.0M |
| RDST Capital LLC | 4.62% | Add +158.3% | 281,547 | $49.1M |
| Holocene Advisors, LP | 0.11% | Add +266.2% | 280,445 | $48.9M |
| Arrowstreet Capital, Limited Partnership | 0.03% | Add +4.2% | 260,461 | $45.4M |
| UBS Group AG | 0.01% | Add +28.5% | 260,261 | $45.4M |
| Renaissance Technologies | 0.06% | Add +28.5% | 245,000 | $42.7M |
| Northern Trust Corp. | 0.01% | Reduce -23.3% | 234,464 | $40.9M |
| Voloridge Investment Management, LLC | 0.11% | Add +174.9% | 189,772 | $33.1M |
| D. E. Shaw & Co. | 0.03% | Add +9.9% | 185,618 | $32.3M |
| Principal Financial Group Inc. | 0.02% | Add +258.3% | 184,857 | $32.2M |
| Raymond James Financial Inc. | 0.01% | Reduce -10.1% | 174,868 | $30.5M |
| Two Sigma Advisers, LP | 0.06% | Reduce -28.4% | 174,200 | $30.4M |
| Amundi | 0.01% | Reduce -19.6% | 178,394 | $29.9M |
| Baird Financial Group, Inc. | 0.05% | Reduce -24.3% | 171,383 | $29.9M |
| Jane Street Group, LLC | 0.03% | Add +73.2% | 167,622 | $29.2M |
| Baillie Gifford & Co. | 0.02% | Reduce -12.1% | 164,198 | $28.6M |
| Point72 Asset Management | 0.07% | Add +195.5% | 163,900 | $28.6M |
| Bank of America Corp. | 0.00% | Reduce -37.7% | 161,752 | $28.2M |
| Royal Bank of Canada | 0.00% | Reduce -21.8% | 153,666 | $26.8M |
| Cubist Systematic Strategies, LLC | 0.38% | Add +163.1% | 152,726 | $26.6M |
| Public Sector Pension Investment Board | 0.09% | Add +1789.3% | 145,743 | $25.4M |
| Janus Henderson Group PLC | 0.01% | Add +6.7% | 145,194 | $25.3M |
| Nuveen, LLC | 0.01% | Reduce -15.2% | 134,910 | $23.5M |
| Goldman Sachs Group Inc. | 0.00% | Add +5.8% | 133,651 | $23.3M |
| Tudor Investment Corporation | 0.15% | Add +39.3% | 129,758 | $22.6M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.07% | Add +6.6% | 126,015 | $22.0M |
| Canada Pension Plan Investment Board | 0.01% | Add +48.1% | 120,400 | $21.0M |
| Schonfeld Strategic Advisors LLC | 0.15% | Add +265.6% | 120,161 | $20.9M |
| California Public Employees Retirement System | 0.01% | Reduce -3.1% | 116,936 | $20.4M |
| Prudential Financial Inc. | 0.02% | Add +17.2% | 115,156 | $20.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -39.3% | 111,914 | $19.5M |
| HRT Financial LP | 0.07% | Add +87.6% | 103,793 | $18.1M |
| Legal & General Group Plc | 0.00% | Add +31.0% | 100,606 | $17.5M |
| Susquehanna International Group, LLP | 0.02% | Add +224.1% | 97,704 | $17.0M |
| TD Asset Management Inc | 0.01% | Reduce -45.2% | 96,040 | $16.7M |
| Rhumbline Advisers | 0.01% | Add +17.4% | 90,447 | $15.8M |
| Squarepoint Ops LLC | 0.03% | Add +380.0% | 88,154 | $15.4M |
| Man Group plc | 0.03% | Reduce -4.0% | 87,103 | $15.2M |
| Sone Capital Management, LLC | 1.26% | Add +124.5% | 86,668 | $15.1M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.03% | Add +435.7% | 85,158 | $14.8M |
| Ameriprise Financial Inc. | 0.00% | Add +404.6% | 83,355 | $14.5M |
| Flossbach Von Storch SE | 0.05% | Add +243.5% | 79,000 | $13.8M |
| Algert Global LLC | 0.22% | Add +89.8% | 76,861 | $13.4M |
| Invesco Ltd. | 0.00% | Reduce -91.0% | 76,327 | $13.3M |
| Freestone Grove Partners LP | 0.10% | Add +3174.9% | 75,388 | $13.1M |
| Swiss National Bank | 0.01% | Add +1.0% | 72,700 | $12.7M |
| Goodman Financial Corp | 2.46% | Reduce -1.4% | 72,370 | $12.6M |
| Quantbot Technologies LP | 0.33% | New | 70,136 | $12.2M |
| Qube Research & Technologies Ltd | 0.02% | Reduce -27.8% | 64,825 | $11.3M |
| Prana Capital Management, LP | 0.36% | Add +99.0% | 61,323 | $10.7M |
| Robeco Institutional Asset Management B.V. | 0.02% | Reduce -20.0% | 60,000 | $10.5M |
| Los Angeles Capital Management LLC | 0.03% | Reduce -5.0% | 53,590 | $9.3M |
| Citigroup Inc. | 0.01% | Add +9.6% | 52,887 | $9.2M |
| Wilson Asset Management (international) PTY Ltd. | 2.16% | Reduce -17.0% | 50,190 | $8.7M |
| ICICI Prudential Asset Management Co Ltd | 0.87% | Add +24.3% | 47,089 | $8.2M |
| Aquatic Capital Management LLC | 0.14% | Add +29.5% | 42,032 | $7.3M |
| DF Dent & Co. Inc. | 0.09% | Reduce -8.9% | 42,006 | $7.3M |
| Engineers Gate Manager LP | 0.08% | Reduce -7.0% | 42,002 | $7.3M |
| Trexquant Investment LP | 0.07% | Reduce -18.3% | 40,385 | $7.0M |
| Polar Asset Management Partners Inc. | 0.21% | New | 40,246 | $7.0M |
| Jump Financial, LLC | 0.09% | Add +255.7% | 39,513 | $6.9M |
| CANADA LIFE ASSURANCE Co | 0.01% | Add +137.7% | 38,296 | $6.8M |
| Jefferies Financial Group Inc. | 0.06% | Add +444.2% | 38,093 | $6.6M |
| Prospector Partners LLC | 0.81% | New | 37,965 | $6.6M |
| Gillson Capital LP | 0.57% | New | 37,500 | $6.5M |
| Bahl & Gaynor LLC | 0.03% | Reduce -3.3% | 36,471 | $6.4M |
| State Board of Administration of Florida Retirement System | 0.01% | Reduce -1.5% | 36,321 | $6.3M |
| New York State Teachers Retirement System | 0.01% | Add +22.8% | 36,218 | $6.3M |
| California State Teachers Retirement System | 0.01% | Reduce -0.1% | 35,931 | $6.3M |
| Barclays PLC | 0.00% | Reduce -74.9% | 35,172 | $6.1M |
| Natixis | 0.03% | Reduce -41.4% | 35,026 | $6.1M |
| State of Wisconsin Investment Board | 0.01% | Reduce -13.2% | 34,723 | $6.1M |
| Weiss Asset Management LP | 0.11% | New | 34,404 | $6.0M |
| First Citizens Bank & Trust Co. | 0.13% | Reduce -4.0% | 34,267 | $6.0M |
| Brevan Howard Capital Management LP | 0.09% | Add +81.3% | 33,942 | $5.9M |
| Guardian Capital LP | 0.19% | Add +27.8% | 33,597 | $5.9M |
| Ieq Capital, LLC | 0.02% | Reduce -47.0% | 32,662 | $5.7M |
| Alps Advisors Inc. | 0.03% | Reduce -30.9% | 32,267 | $5.6M |
"% of holder's portfolio" is MKTX's weight in each manager's 13F, not the share of Marketaxess Holdings Inc. the manager owns.