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, Q3 2025
Institutional positions in Marketaxess Holdings Inc as of Sep 30, 2025. 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
- −72 vs. Q2 2025
- Shares held
- 35.6M
- −763.0K (−2.1%) vs. Q2 2025
- Total value
- $6.21B
- −$1.90B (−23.5%) vs. Q2 2025
- New holders
- 64
- 160 more added
- Sold out
- 136
- 185 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 3,854,312 | $671.6M | 0.01% | −505,060−11.6% | Reduced |
| Primecap Management Co | 2,230,595 | $388.7M | 0.30% | +891,303+66.6% | Added |
| FMR LLC | 2,143,921 | $373.6M | 0.02% | −188,225−8.1% | Reduced |
| Van Eck Associates Corp | 1,948,633 | $339.5M | 0.32% | +119,036+6.5% | Added |
| BlackRock, Inc. | 1,850,409 | $322.4M | 0.01% | −799,477−30.2% | Reduced |
| HSBC Holdings PLC | 1,798,766 | $315.4M | 0.19% | +1,740,316+2,977.4% | Added |
| T. Rowe Price Investment Management, Inc. | 1,370,694 | $238.8M | 0.15% | −961,294−41.2% | Reduced |
| Guardcap Asset Management Ltd | 1,361,264 | $237.2M | 5.50% | −137,094−9.1% | Reduced |
| State Street Corp | 1,320,657 | $230.1M | 0.01% | −212,039−13.8% | Reduced |
| AQR Capital Management LLC | 951,088 | $165.7M | 0.11% | +192,626+25.4% | Added |
| North Reef Capital Management LP | 911,358 | $158.8M | 7.43% | +491,358+117.0% | Added |
| Geode Capital Management, LLC | 830,996 | $144.8M | 0.01% | −310,202−27.2% | Reduced |
| Burgundy Asset Management Ltd. | 692,216 | $127.3M | 1.20% | +277,846+67.1% | Added |
| Findlay Park Partners LLP | 644,700 | $112.3M | 1.18% | −11,600−1.8% | Reduced |
| Millennium Management LLC | 607,556 | $105.9M | 0.08% | +175,374+40.6% | Added |
| Morgan Stanley | 549,023 | $95.7M | 0.01% | +124,216+29.2% | Added |
| Dimensional Fund Advisors LP | 521,129 | $90.8M | 0.02% | +9,707+1.9% | Added |
| BNP Paribas Arbitrage, SA | 486,106 | $84.7M | 0.07% | +400,691+469.1% | Added |
| JPMorgan Chase & Co | 447,925 | $78.1M | 0.00% | +28,881+6.9% | Added |
| Bank of New York Mellon Corp | 376,550 | $65.6M | 0.01% | +521+0.1% | Added |
| Two Sigma Investments, LP | 364,384 | $63.5M | 0.10% | +84,295+30.1% | Added |
| Charles Schwab Investment Management Inc | 315,148 | $54.9M | 0.01% | −51,319−14.0% | Reduced |
| Citadel Advisors LLC | 310,086 | $54.0M | 0.04% | −41,080−11.7% | Reduced |
| RDST Capital LLC | 281,547 | $49.1M | 4.62% | +172,542+158.3% | Added |
| Holocene Advisors, LP | 280,445 | $48.9M | 0.11% | +203,871+266.2% | Added |
| Arrowstreet Capital, Limited Partnership | 260,461 | $45.4M | 0.03% | +10,424+4.2% | Added |
| UBS Group AG | 260,261 | $45.4M | 0.01% | +57,794+28.5% | Added |
| Renaissance Technologies LLC | 245,000 | $42.7M | 0.06% | +54,400+28.5% | Added |
| Northern Trust Corp | 234,464 | $40.9M | 0.01% | −71,100−23.3% | Reduced |
| Voloridge Investment Management, LLC | 189,772 | $33.1M | 0.11% | +120,746+174.9% | Added |
| D. E. Shaw & Co., Inc. | 185,618 | $32.3M | 0.03% | +16,720+9.9% | Added |
| Principal Financial Group Inc | 184,857 | $32.2M | 0.02% | +133,260+258.3% | Added |
| Raymond James Financial Inc | 174,868 | $30.5M | 0.01% | −19,598−10.1% | Reduced |
| Two Sigma Advisers, LP | 174,200 | $30.4M | 0.06% | −69,200−28.4% | Reduced |
| Amundi | 178,394 | $29.9M | 0.01% | −43,408−19.6% | Reduced |
| Baird Financial Group, Inc. | 171,383 | $29.9M | 0.05% | −54,917−24.3% | Reduced |
| Jane Street Group, LLC | 167,622 | $29.2M | 0.03% | +70,843+73.2% | Added |
| Baillie Gifford & Co | 164,198 | $28.6M | 0.02% | −22,491−12.0% | Reduced |
| Point72 Asset Management, L.P. | 163,900 | $28.6M | 0.06% | +108,432+195.5% | Added |
| Bank of America Corp | 161,752 | $28.2M | 0.00% | −98,000−37.7% | Reduced |
| Royal Bank of Canada | 153,666 | $26.8M | 0.00% | −42,942−21.8% | Reduced |
| Cubist Systematic Strategies, LLC | 152,726 | $26.6M | 0.38% | +94,682+163.1% | Added |
| Public Sector Pension Investment Board | 145,743 | $25.4M | 0.09% | +138,029+1,789.3% | Added |
| Janus Henderson Group PLC | 145,194 | $25.3M | 0.01% | +9,157+6.7% | Added |
| Nuveen, LLC | 134,910 | $23.5M | 0.01% | −24,257−15.2% | Reduced |
| Goldman Sachs Group Inc | 133,651 | $23.3M | 0.00% | +7,302+5.8% | Added |
| Tudor Investment Corp Et Al | 129,758 | $22.6M | 0.15% | +36,604+39.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 126,015 | $22.0M | 0.07% | +7,784+6.6% | Added |
| Canada Pension Plan Investment Board | 120,400 | $21.0M | 0.01% | +39,111+48.1% | Added |
| Schonfeld Strategic Advisors LLC | 120,161 | $20.9M | 0.15% | +87,294+265.6% | Added |
| California Public Employees Retirement System | 116,936 | $20.4M | 0.01% | −3,711−3.1% | Reduced |
| Prudential Financial Inc | 115,156 | $20.1M | 0.02% | +16,885+17.2% | Added |
| UBS Asset Management Americas Inc | 111,914 | $19.5M | 0.00% | −72,321−39.3% | Reduced |
| HRT Financial LP | 103,793 | $18.1M | 0.07% | +48,478+87.6% | Added |
| Legal & General Group Plc | 100,606 | $17.5M | 0.00% | +23,783+31.0% | Added |
| Susquehanna International Group, LLP | 97,704 | $17.0M | 0.02% | +67,554+224.1% | Added |
| TD Asset Management Inc | 96,040 | $16.7M | 0.01% | −79,356−45.2% | Reduced |
| Rhumbline Advisers | 90,447 | $15.8M | 0.01% | +13,413+17.4% | Added |
| Squarepoint Ops LLC | 88,154 | $15.4M | 0.03% | +69,787+380.0% | Added |
| Man Group plc | 87,103 | $15.2M | 0.03% | −3,642−4.0% | Reduced |
| Sone Capital Management, LLC | 86,668 | $15.1M | 1.26% | +48,065+124.5% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 85,158 | $14.8M | 0.03% | +69,262+435.7% | Added |
| Ameriprise Financial Inc | 83,355 | $14.5M | 0.00% | +66,837+404.6% | Added |
| Flossbach Von Storch AG | 79,000 | $13.8M | 0.05% | +56,000+243.5% | Added |
| Algert Global LLC | 76,861 | $13.4M | 0.22% | +36,374+89.8% | Added |
| Invesco Ltd. | 76,327 | $13.3M | 0.00% | −776,886−91.1% | Reduced |
| Freestone Grove Partners LP | 75,388 | $13.1M | 0.10% | +73,086+3,174.9% | Added |
| Swiss National Bank | 72,700 | $12.7M | 0.01% | +700+1.0% | Added |
| Goodman Financial Corp | 72,370 | $12.6M | 2.46% | −1,060−1.4% | Reduced |
| Quantbot Technologies LP | 70,136 | $12.2M | 0.33% | +70,136 | New |
| Qube Research & Technologies Ltd | 64,825 | $11.3M | 0.02% | −24,956−27.8% | Reduced |
| Prana Capital Management, LP | 61,323 | $10.7M | 0.36% | +30,508+99.0% | Added |
| Robeco Institutional Asset Management B.V. | 60,000 | $10.5M | 0.02% | −15,000−20.0% | Reduced |
| Los Angeles Capital Management LLC | 53,590 | $9.34M | 0.03% | −2,833−5.0% | Reduced |
| Citigroup Inc | 52,887 | $9.22M | 0.01% | +4,639+9.6% | Added |
| Wilson Asset Management (International) Pty Ltd | 50,190 | $8.75M | 2.16% | −10,302−17.0% | Reduced |
| ICICI Prudential Asset Management Co Ltd | 47,089 | $8.21M | 0.87% | +9,200+24.3% | Added |
| Aquatic Capital Management LLC | 42,032 | $7.32M | 0.14% | +9,585+29.5% | Added |
| DF Dent & Co Inc | 42,006 | $7.32M | 0.09% | −4,120−8.9% | Reduced |
| Engineers Gate Manager LP | 42,002 | $7.32M | 0.08% | −3,186−7.1% | Reduced |
| Trexquant Investment LP | 40,385 | $7.04M | 0.07% | −9,031−18.3% | Reduced |
| Polar Asset Management Partners Inc. | 40,246 | $7.01M | 0.14% | +40,246 | New |
| Lombard Odier Asset Management (Europe) Ltd | 14,250 | $6.91M | 0.35% | −10,500−42.4% | Reduced |
| Jump Financial, LLC | 39,513 | $6.89M | 0.09% | +28,405+255.7% | Added |
| Great West Life Assurance Co | 38,296 | $6.80M | 0.01% | +22,186+137.7% | Added |
| Jefferies Financial Group Inc. | 38,093 | $6.64M | 0.06% | +31,093+444.2% | Added |
| Prospector Partners LLC | 37,965 | $6.62M | 0.80% | +37,965 | New |
| Gillson Capital LP | 37,500 | $6.53M | 0.57% | +37,500 | New |
| Bahl & Gaynor Inc | 36,471 | $6.36M | 0.03% | −1,236−3.3% | Reduced |
| State Board of Administration of Florida Retirement System | 36,321 | $6.33M | 0.01% | −555−1.5% | Reduced |
| New York State Teachers Retirement System | 36,218 | $6.31M | 0.01% | +6,725+22.8% | Added |
| California State Teachers Retirement System | 35,931 | $6.26M | 0.01% | −40−0.1% | Reduced |
| Barclays PLC | 35,172 | $6.13M | 0.00% | −104,908−74.9% | Reduced |
| Natixis | 35,026 | $6.10M | 0.03% | −24,726−41.4% | Reduced |
| State of Wisconsin Investment Board | 34,723 | $6.05M | 0.01% | −5,257−13.1% | Reduced |
| Weiss Asset Management LP | 34,404 | $5.99M | 0.09% | +34,404 | New |
| First Citizens Bank & Trust Co | 34,267 | $5.97M | 0.13% | −1,433−4.0% | Reduced |
| Brevan Howard Capital Management LP | 33,942 | $5.91M | 0.08% | +15,217+81.3% | Added |
| Guardian Capital LP | 33,597 | $5.85M | 0.19% | +7,297+27.7% | Added |
| Ieq Capital, LLC | 32,662 | $5.69M | 0.02% | −28,973−47.0% | Reduced |