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, Q4 2025
Institutional positions in Marketaxess Holdings Inc as of Dec 31, 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
- 487
- +47 vs. Q3 2025
- Shares held
- 36.5M
- +1.81M (+5.2%) vs. Q3 2025
- Total value
- $6.62B
- +$566.0M (+9.4%) vs. Q3 2025
- New holders
- 118
- 155 more added
- Sold out
- 71
- 171 more reduced
12 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Simplex Trading, LLC | 259 | $46.9K | 0.00% | −2,030−88.7% | Reduced |
| Salomon & Ludwin, LLC | 261 | $47.0K | 0.00% | −19−6.8% | Reduced |
| Federated Hermes, Inc. | 277 | $50.2K | 0.00% | −34−10.9% | Reduced |
| Pacer Advisors, Inc. | 280 | $50.8K | 0.00% | +210+300.0% | Added |
| Group One Trading, L.P. | 298 | $54.0K | 0.00% | −249−45.5% | Reduced |
| Employees Retirement System of Texas | 311 | $56.0K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 311 | $56.4K | 0.00% | +164+111.6% | Added |
| Neo Ivy Capital Management | 321 | $58.2K | 0.01% | +321 | New |
| Bayforest Capital Ltd | 337 | $61.1K | 0.05% | −1,642−83.0% | Reduced |
| Colonial Trust Co | 351 | $63.6K | 0.01% | 00.0% | Unchanged |
| Anchor Investment Management, LLC | 374 | $67.8K | 0.01% | −2−0.5% | Reduced |
| State of Wyoming | 421 | $76.3K | 0.01% | +421 | New |
| Asset Management One Co.,Ltd. | 467 | $85.9K | 0.00% | −241−34.0% | Reduced |
| Quarry LP | 480 | $87.0K | 0.01% | −235−32.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 496 | $89.9K | 0.00% | −111−18.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 507 | $91.9K | 0.02% | +21+4.3% | Added |
| Eurizon Capital SGR S.p.A. | 580 | $105.7K | 0.00% | +580 | New |
| MetLife Investment Management | 596 | $108.0K | 0.00% | −12−2.0% | Reduced |
| Hantz Financial Services, Inc. | 617 | $112.0K | 0.00% | +290+88.7% | Added |
| Versant Capital Management, Inc | 622 | $112.7K | 0.01% | +503+422.7% | Added |
| True Wealth Design, LLC | 687 | $124.5K | 0.04% | +641+1,393.5% | Added |
| Covestor Ltd | 811 | $147.0K | 0.08% | +158+24.2% | Added |
| South Dakota Investment Council | 850 | $154.0K | 0.00% | −100−10.5% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 871 | $157.9K | 0.02% | +871 | New |
| STRS Ohio | 873 | $158.2K | 0.00% | +1+0.1% | Added |
| CX Institutional | 1,091 | $198.0K | 0.01% | +646+145.2% | Added |
| Quest Partners LLC | 1,098 | $199.0K | 0.01% | −8,319−88.3% | Reduced |
| Commonwealth Equity Services, LLC | 1,108 | $200.9K | 0.00% | +1,108 | New |
| Claret Asset Management Corp | 1,116 | $202.0K | 0.02% | +1,116 | New |
| CSS LLC | 1,120 | $203.0K | 0.01% | +1,120 | New |
| Cetera Investment Advisers | 1,127 | $204.3K | 0.00% | −163−12.6% | Reduced |
| PDS Planning, Inc | 1,128 | $204.4K | 0.01% | +1,128 | New |
| Sather Financial Group Inc | 1,129 | $204.6K | 0.01% | +1,129 | New |
| Skopos Labs, Inc. | 1,123 | $206.5K | 0.01% | +1,123 | New |
| RSM US Wealth Management LLC | 1,135 | $207.1K | 0.00% | +1,135 | New |
| Truist Financial Corp | 1,143 | $207.2K | 0.00% | −288−20.1% | Reduced |
| Wick Capital Partners, LLC | 1,170 | $212.1K | 0.04% | +1,170 | New |
| KBC Group NV | 1,194 | $216.0K | 0.00% | +251+26.6% | Added |
| Sage Rhino Capital LLC | 1,194 | $216.4K | 0.04% | −431−26.5% | Reduced |
| Credit Capital Investments LLC | 1,200 | $217.5K | 0.20% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1,203 | $218.0K | 0.00% | +1,028+587.4% | Added |
| Poinciana Advisors Group, LLC | 1,206 | $218.6K | 0.17% | +1,206 | New |
| Twin Tree Management, LP | 1,227 | $222.4K | 0.02% | +1,227 | New |
| Hamilton Capital Partners Inc. | 1,239 | $224.6K | 0.01% | +1,239 | New |
| Shelton Capital Management | 1,244 | $225.5K | 0.00% | +1,244 | New |
| Essex Financial Services, Inc. | 1,247 | $226.0K | 0.01% | +1,247 | New |
| Empowered Funds, LLC | 1,256 | $227.7K | 0.00% | −26−2.0% | Reduced |
| Legacy Financial Advisors, Inc. | 1,257 | $227.8K | 0.03% | +1,257 | New |
| Aster Capital Management (DIFC) Ltd | 1,267 | $229.6K | 0.10% | +291+29.8% | Added |
| Retirement Planning Co of New England, Inc. | 1,277 | $231.5K | 0.09% | −100−7.3% | Reduced |
| Vise Technologies, Inc. | 1,282 | $232.4K | 0.00% | +1,282 | New |
| North Dakota State Investment Board | 1,298 | $235.3K | 0.01% | +1,298 | New |
| Empirical Finance, LLC | 1,313 | $238.0K | 0.01% | −43−3.2% | Reduced |
| Kornitzer Capital Management Inc | 1,314 | $238.2K | 0.00% | −6,560−83.3% | Reduced |
| Guardian Partners Inc. | 1,500 | $242.8K | 0.02% | +200+15.4% | Added |
| QTR Family Wealth, LLC | 1,372 | $243.3K | 0.11% | +1,372 | New |
| Crossmark Global Holdings, Inc. | 1,349 | $244.5K | 0.00% | +12+0.9% | Added |
| Northwest Wealth Management, LLC | 1,350 | $244.7K | 0.04% | +1,350 | New |
| Savvy Advisors, Inc. | 1,389 | $251.8K | 0.01% | +111+8.7% | Added |
| Omers Administration Corp | 1,390 | $251.9K | 0.00% | 00.0% | Unchanged |
| Knightsbridge Asset Management, LLC | 1,391 | $252.1K | 0.04% | +1,391 | New |
| Argos Wealth Advisors, LLC | 1,399 | $253.6K | 0.07% | +1,399 | New |
| Catalyst Funds Management Pty Ltd | 1,400 | $253.8K | 0.06% | −1,100−44.0% | Reduced |
| GAMMA Investing LLC | 1,422 | $257.7K | 0.01% | +326+29.7% | Added |
| Beese Fulmer Investment Management, Inc. | 1,454 | $263.5K | 0.02% | +1,454 | New |
| EP Wealth Advisors, LLC | 1,468 | $266.1K | 0.00% | +1,468 | New |
| Scientech Research LLC | 1,473 | $267.0K | 0.17% | −5,100−77.6% | Reduced |
| Graham Capital Management, L.P. | 1,475 | $267.3K | 0.01% | −233−13.6% | Reduced |
| Journey Strategic Wealth LLC | 1,539 | $278.9K | 0.01% | +1,539 | New |
| CI Private Wealth, LLC | 1,552 | $281.3K | 0.00% | −446−22.3% | Reduced |
| Nomura Holdings Inc | 1,563 | $283.3K | 0.00% | +1,563 | New |
| Aigen Investment Management, LP | 1,564 | $283.5K | 0.07% | −2,520−61.7% | Reduced |
| Landscape Capital Management, L.L.C. | 1,594 | $288.9K | 0.02% | +1,594 | New |
| Fi3 FINANCIAL ADVISORS, LLC | 1,608 | $291.5K | 0.09% | +1,608 | New |
| GenTrust, LLC | 1,610 | $291.8K | 0.01% | +1,610 | New |
| Tower Research Capital LLC (TRC) | 1,611 | $292.0K | 0.01% | +1,079+202.8% | Added |
| Cambridge Investment Research Advisors, Inc. | 1,627 | $295.0K | 0.00% | +1,627 | New |
| Kera Capital Partners, Inc. | 1,761 | $298.0K | 0.04% | +1,761 | New |
| Globeflex Capital L P | 1,648 | $298.7K | 0.05% | 00.0% | Unchanged |
| Machina Capital S.A.S. | 1,649 | $298.9K | 0.06% | 00.0% | Unchanged |
| Benedict Financial Advisors Inc | 1,671 | $302.8K | 0.06% | −200−10.7% | Reduced |
| Allworth Financial LP | 1,699 | $307.9K | 0.00% | +1,298+323.7% | Added |
| Ariadne Wealth Management, LP | 1,747 | $310.0K | 0.13% | +1,747 | New |
| Swiss Life Asset Management Ltd | 1,721 | $311.9K | 0.00% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 1,724 | $312.5K | 0.01% | −59−3.3% | Reduced |
| Pinnacle Associates Ltd | 1,745 | $316.3K | 0.00% | +1,745 | New |
| Pinnacle Wealth Management Advisory Group, LLC | 1,745 | $316.3K | 0.02% | +1,745 | New |
| Pathstone Holdings, LLC | 1,757 | $318.5K | 0.00% | −339−16.2% | Reduced |
| Allegiance Financial Group Advisory Services LLC | 1,818 | $329.5K | 0.07% | +1,818 | New |
| The PNC Financial Services Group, Inc. | 1,818 | $329.5K | 0.00% | −1,631−47.3% | Reduced |
| Banque Pictet & Cie SA | 1,820 | $329.9K | 0.00% | +175+10.6% | Added |
| Jones Financial Companies LLLP | 1,848 | $334.9K | 0.00% | +172+10.3% | Added |
| Sequoia Financial Advisors, LLC | 1,877 | $340.2K | 0.00% | −270−12.6% | Reduced |
| Dundas Partners LLP | 1,902 | $344.7K | 0.02% | −337−15.1% | Reduced |
| O'Shaughnessy Asset Management, LLC | 1,908 | $345.8K | 0.00% | +529+38.4% | Added |
| Utah Retirement Systems | 1,927 | $349.3K | 0.00% | 00.0% | Unchanged |
| Xponance, Inc. | 1,931 | $350.0K | 0.00% | +47+2.5% | Added |
| Knollwood Investment Advisory, LLC | 1,934 | $350.5K | 0.03% | 00.0% | Unchanged |
| Horizon Kinetics Asset Management LLC | 1,950 | $353.4K | 0.00% | 00.0% | Unchanged |
| RMR Wealth Builders | 1,958 | $354.9K | 0.03% | −126−6.0% | Reduced |