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, 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
- 397
- −50 vs. Q1 2026
- Shares held
- 39.1M
- +1.10M (+2.9%) vs. Q1 2026
- Total value
- $4.44B
- −$1.83B (−29.2%) vs. Q1 2026
- New holders
- 57
- 130 more added
- Sold out
- 107
- 171 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 | 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, 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 |
|---|---|---|---|---|---|
| Diversified Trust Co | 4,313 | $489.5K | 0.01% | −1,342−23.7% | Reduced |
| Rothschild Investment LLC | 4,148 | $470.8K | 0.02% | +2,023+95.2% | Added |
| Blueshift Asset Management, LLC | 4,144 | $470.3K | 0.11% | +680+19.6% | Added |
| LPL Financial LLC | 4,119 | $467.4K | 0.00% | −134−3.2% | Reduced |
| Assetmark, Inc | 4,118 | $467.4K | 0.00% | +1,463+55.1% | Added |
| Nordea Investment Management AB | 4,104 | $465.4K | 0.00% | −438−9.6% | Reduced |
| Engineers Gate Manager LP | 4,050 | $459.6K | 0.01% | −815−16.8% | Reduced |
| Teacher Retirement System of Texas | 4,049 | $459.5K | 0.00% | +2,589+177.3% | Added |
| Deutsche Bank AG | 3,979 | $451.6K | 0.00% | −33,497−89.4% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 3,959 | $449.3K | 0.01% | −409−9.4% | Reduced |
| Public Employees Retirement Association of Colorado | 3,908 | $444.0K | 0.00% | 00.0% | Unchanged |
| Merit Financial Group, LLC | 3,812 | $432.6K | 0.00% | −9,898−72.2% | Reduced |
| Krilogy Financial LLC | 3,803 | $431.6K | 0.01% | −4,081−51.8% | Reduced |
| Aquatic Capital Management LLC | 3,790 | $430.1K | 0.01% | +2,282+151.3% | Added |
| Lombard Odier Asset Management (Europe) Ltd | 3,783 | $429.3K | 0.02% | −17,147−81.9% | Reduced |
| Axq Capital, LP | 3,734 | $423.8K | 0.05% | −1,456−28.1% | Reduced |
| MAI Capital Management | 3,708 | $420.9K | 0.00% | +3,265+737.0% | Added |
| Buckingham Strategic Partners | 3,707 | $420.7K | 0.00% | −8,201−68.9% | Reduced |
| IMC-Chicago, LLC | 3,685 | $418.2K | 0.00% | +3,685 | New |
| Aviva PLC | 3,666 | $416.1K | 0.00% | +1,166+46.6% | Added |
| Odyssean, LLC | 3,661 | $415.5K | 0.07% | +2,280+165.1% | Added |
| Brighton Jones LLC | 3,656 | $414.9K | 0.01% | −9,442−72.1% | Reduced |
| JustInvest LLC | 3,607 | $409.4K | 0.00% | +12+0.3% | Added |
| Sivia Capital Partners, LLC | 3,554 | $403.3K | 0.05% | −1,624−31.4% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 3,373 | $382.8K | 0.00% | +371+12.4% | Added |
| Citizens Financial Group Inc | 3,297 | $374.1K | 0.00% | +705+27.2% | Added |
| South Dakota Investment Council | 3,150 | $357.0K | 0.01% | +2,300+270.6% | Added |
| Walled Lake Planning & Wealth Management, LLC | 3,116 | $353.6K | 0.09% | −7,428−70.4% | Reduced |
| Federation des caisses Desjardins du Quebec | 3,072 | $348.7K | 0.00% | +412+15.5% | Added |
| Machina Capital S.A.S. | 3,056 | $346.8K | 0.05% | +1,107+56.8% | Added |
| Integrated Wealth Concepts LLC | 3,010 | $341.6K | 0.00% | −4,786−61.4% | Reduced |
| Amica Mutual Insurance Co | 2,758 | $313.0K | 0.03% | 00.0% | Unchanged |
| West Family Investments, Inc. | 2,714 | $308.0K | 0.09% | +2,714 | New |
| TD Waterhouse Canada Inc. | 2,648 | $303.2K | 0.00% | −919−25.8% | Reduced |
| Atom Investors LP | 2,669 | $302.9K | 0.03% | +2,669 | New |
| Xponance, Inc. | 2,634 | $298.9K | 0.00% | −135−4.9% | Reduced |
| Optimize Financial Inc | 2,559 | $290.4K | 0.10% | 00.0% | Unchanged |
| Sound Capital Solutions LLC | 2,559 | $290.4K | 0.07% | +2,559 | New |
| Empowered Funds, LLC | 2,519 | $285.9K | 0.00% | −3,955−61.1% | Reduced |
| HB Wealth Management, LLC | 2,517 | $285.7K | 0.00% | −705−21.9% | Reduced |
| Unique Wealth Strategies, LLC | 2,506 | $284.4K | 0.10% | +2,506 | New |
| Dark Forest Capital Management LP | 2,435 | $276.3K | 0.02% | −5,609−69.7% | Reduced |
| Virginia Retirement Systems Et Al | 2,400 | $272.4K | 0.00% | +2,400 | New |
| DRW Securities, LLC | 2,370 | $269.0K | 0.02% | −1,728−42.2% | Reduced |
| Simplex Trading, LLC | 2,336 | $265.1K | 0.01% | +2,336 | New |
| Morningstar Investment Management LLC | 1,602 | $264.3K | 0.02% | 00.0% | Unchanged |
| X-Square Capital, LLC | 2,330 | $264.0K | 0.07% | +145+6.6% | Added |
| Swiss Life Asset Management Ltd | 2,304 | $261.5K | 0.00% | +162+7.6% | Added |
| Horizon Kinetics Asset Management LLC | 2,254 | $255.8K | 0.00% | +152+7.2% | Added |
| CIBC Asset Management Inc | 2,238 | $254.0K | 0.00% | 00.0% | Unchanged |
| Evolve Private Wealth, LLC | 2,198 | $249.5K | 0.02% | −3,502−61.4% | Reduced |
| Westpac Banking Corp | 2,194 | $249.0K | 0.02% | +1,853+543.4% | Added |
| Perpetual Ltd | 2,194 | $249.0K | 0.00% | +2,194 | New |
| Bull Harbor Capital LLC | 2,169 | $246.2K | 0.05% | −4,209−66.0% | Reduced |
| Balyasny Asset Management LLC | 2,153 | $244.3K | 0.00% | −2,032−48.6% | Reduced |
| Walleye Trading LLC | 2,147 | $243.7K | 0.00% | −16,923−88.7% | Reduced |
| Claret Asset Management Corp | 2,127 | $241.0K | 0.03% | +2,127 | New |
| Blair William & Co | 2,085 | $236.6K | 0.00% | +2,085 | New |
| Pathstone Holdings, LLC | 2,077 | $235.7K | 0.00% | +251+13.7% | Added |
| HighTower Advisors, LLC | 2,060 | $233.7K | 0.00% | −3,776−64.7% | Reduced |
| Ensign Peak Advisors, Inc | 2,057 | $233.4K | 0.00% | −3,110−60.2% | Reduced |
| CWM Advisors, LLC | 2,027 | $230.0K | 0.01% | +2,027 | New |
| Centiva Capital, LP | 2,002 | $227.2K | 0.01% | +2,002 | New |
| Caerus Investment Advisors, LLC | 1,990 | $225.8K | 0.08% | −434−17.9% | Reduced |
| RMR Wealth Builders | 1,959 | $222.3K | 0.01% | +2+0.1% | Added |
| Armistice Capital, LLC | 1,952 | $221.5K | 0.01% | +1,952 | New |
| Knollwood Investment Advisory, LLC | 1,934 | $219.5K | 0.02% | 00.0% | Unchanged |
| Glenmede Trust Co NA | 1,910 | $216.8K | 0.00% | +1,910 | New |
| Transcend Wealth Collective, LLC | 1,909 | $216.7K | 0.01% | −574−23.1% | Reduced |
| Linden Thomas Advisory Services, LLC | 1,907 | $216.4K | 0.02% | −17−0.9% | Reduced |
| DnB Asset Management AS | 1,902 | $215.9K | 0.00% | 00.0% | Unchanged |
| Warren Averett Asset Management, LLC | 1,895 | $215.1K | 0.00% | −1,471−43.7% | Reduced |
| AlphaCore Capital LLC | 1,875 | $212.8K | 0.00% | +1,875 | New |
| New Age Alpha Advisors, LLC | 1,864 | $211.5K | 0.01% | −1,380−42.5% | Reduced |
| Utah Retirement Systems | 1,823 | $206.9K | 0.00% | −104−5.4% | Reduced |
| Keybank National Association | 1,780 | $202.0K | 0.00% | −971−35.3% | Reduced |
| Nykredit A/S | 1,751 | $198.7K | 0.00% | +1,751 | New |
| The PNC Financial Services Group, Inc. | 1,649 | $187.1K | 0.00% | −476−22.4% | Reduced |
| Hantz Financial Services, Inc. | 1,575 | $179.0K | 0.00% | +678+75.6% | Added |
| Nisa Investment Advisors, LLC | 1,508 | $171.1K | 0.00% | −3,723−71.2% | Reduced |
| Essential Partners LLC | 1,469 | $166.7K | 0.08% | −2,237−60.4% | Reduced |
| Allworth Financial LP | 1,435 | $162.9K | 0.00% | −1,059−42.5% | Reduced |
| Globeflex Capital L P | 1,371 | $155.6K | 0.02% | 00.0% | Unchanged |
| KBC Group NV | 1,194 | $136.0K | 0.00% | 00.0% | Unchanged |
| Bard Associates Inc | 1,174 | $133.2K | 0.03% | +15+1.3% | Added |
| GAMMA Investing LLC | 1,171 | $132.9K | 0.00% | −273−18.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 1,153 | $130.8K | 0.00% | +334+40.8% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 1,118 | $126.9K | 0.00% | +1,118 | New |
| Guardian Partners Inc. | 1,100 | $124.8K | 0.01% | −301−21.5% | Reduced |
| Horizon Investments, LLC | 1,092 | $123.9K | 0.00% | +171+18.6% | Added |
| Sterling Capital Management LLC | 1,052 | $119.4K | 0.00% | −171−14.0% | Reduced |
| US Bancorp | 1,029 | $116.8K | 0.00% | −1,939−65.3% | Reduced |
| Archer Investment Corp | 993 | $112.7K | 0.02% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 938 | $106.5K | 0.00% | −2,160−69.7% | Reduced |
| Bayforest Capital Ltd | 778 | $88.3K | 0.08% | +573+279.5% | Added |
| STRS Ohio | 737 | $83.6K | 0.00% | −135−15.5% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 707 | $80.2K | 0.01% | −30−4.1% | Reduced |
| Leonteq Securities AG | 679 | $77.1K | 0.00% | +640+1,641.0% | Added |
| Rexford Capital Inc | 614 | $69.7K | 0.04% | +400+186.9% | Added |
| True Wealth Design, LLC | 598 | $67.9K | 0.02% | −25−4.0% | Reduced |