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, Q1 2026
Institutional positions in Marketaxess Holdings Inc as of Mar 31, 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
- 452
- −27 vs. Q4 2025
- Shares held
- 38.2M
- +6.09M (+18.9%) vs. Q4 2025
- Total value
- $6.31B
- +$482.8M (+8.3%) vs. Q4 2025
- New holders
- 63
- 182 more added
- Sold out
- 90
- 150 more reduced
8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| RNC Capital Management LLC | 5,118 | $844.4K | 0.04% | +1,535+42.8% | Added |
| Alyeska Investment Group, L.P. | 5,042 | $831.8K | 0.00% | +5,042 | New |
| Ancora Advisors, LLC | 5,001 | $825.1K | 0.02% | +662+15.3% | Added |
| Wells Fargo & Company | 4,927 | $812.8K | 0.00% | −368−6.9% | Reduced |
| Engineers Gate Manager LP | 4,865 | $802.6K | 0.01% | +4,865 | New |
| RMB Capital Management, LLC | 4,740 | $782.0K | 0.01% | +1,750+58.5% | Added |
| Virtu Financial LLC | 4,742 | $782.0K | 0.03% | +4,742 | New |
| NorthCrest Asset Manangement, LLC | 4,437 | $760.8K | 0.02% | −2,130−32.4% | Reduced |
| Nordea Investment Management AB | 4,542 | $748.6K | 0.00% | −919−16.8% | Reduced |
| New York Life Investment Management LLC | 4,445 | $733.3K | 0.01% | +990+28.7% | Added |
| Hennion & Walsh Asset Management, Inc. | 4,368 | $720.6K | 0.02% | +119+2.8% | Added |
| PDT Partners, LLC | 4,280 | $706.1K | 0.04% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 4,254 | $701.8K | 0.01% | +5+0.1% | Added |
| LPL Financial LLC | 4,253 | $701.7K | 0.00% | +379+9.8% | Added |
| Balyasny Asset Management LLC | 4,185 | $690.4K | 0.00% | −28,510−87.2% | Reduced |
| DRW Securities, LLC | 4,098 | $676.1K | 0.04% | +4,098 | New |
| Northwest & Ethical Investments L.P. | 4,036 | $665.9K | 0.02% | −1,700−29.6% | Reduced |
| CIBC World Markets Inc. | 3,992 | $658.6K | 0.00% | −6,261−61.1% | Reduced |
| Public Employees Retirement Association of Colorado | 3,908 | $645.0K | 0.00% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 3,908 | $644.7K | 0.00% | +594+17.9% | Added |
| Chicago Partners Investment Group LLC | 3,905 | $635.1K | 0.01% | +14+0.4% | Added |
| Essential Partners LLC | 3,706 | $611.4K | 0.21% | −1,467−28.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 3,614 | $596.2K | 0.00% | +3,614 | New |
| JustInvest LLC | 3,595 | $593.1K | 0.01% | −391−9.8% | Reduced |
| TD Waterhouse Canada Inc. | 3,567 | $588.6K | 0.00% | +3,567 | New |
| TD Asset Management Inc | 3,567 | $588.5K | 0.00% | −621−14.8% | Reduced |
| Lido Advisors, LLC | 3,551 | $585.8K | 0.00% | +493+16.1% | Added |
| Blueshift Asset Management, LLC | 3,464 | $571.5K | 0.17% | +3,464 | New |
| Larson Financial Group LLC | 3,410 | $562.5K | 0.02% | +366+12.0% | Added |
| Warren Averett Asset Management, LLC | 3,366 | $555.3K | 0.00% | +466+16.1% | Added |
| D. E. Shaw & Co., Inc. | 3,314 | $546.7K | 0.00% | −32,785−90.8% | Reduced |
| CIBC Bancorp USA Inc. | 3,310 | $546.2K | 0.00% | +3,310 | New |
| Parcion Private Wealth LLC | 3,252 | $536.5K | 0.03% | −78−2.3% | Reduced |
| New Age Alpha Advisors, LLC | 3,244 | $535.2K | 0.03% | −71−2.1% | Reduced |
| HB Wealth Management, LLC | 3,222 | $531.6K | 0.00% | +658+25.7% | Added |
| Vident Advisory, LLC | 3,202 | $528.3K | 0.00% | −15,782−83.1% | Reduced |
| Entropy Technologies, LP | 3,192 | $526.6K | 0.02% | +3,192 | New |
| EverSource Wealth Advisors, LLC | 3,098 | $511.1K | 0.02% | +272+9.6% | Added |
| Inspire Advisors, LLC | 3,057 | $504.4K | 0.04% | +67+2.2% | Added |
| Y-Intercept (Hong Kong) Ltd | 3,054 | $503.8K | 0.01% | −2,106−40.8% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 3,002 | $495.2K | 0.00% | −205−6.4% | Reduced |
| US Bancorp | 2,968 | $489.7K | 0.00% | −618−17.2% | Reduced |
| waypoint wealth counsel | 2,954 | $487.4K | 0.25% | +414+16.3% | Added |
| Twin Tree Management, LP | 2,949 | $486.5K | 0.10% | +1,722+140.3% | Added |
| Waddell & Associates, LLC | 2,926 | $482.7K | 0.03% | +154+5.6% | Added |
| Jackson Thornton Asset Management, LLC | 2,785 | $478.9K | 0.04% | −545−16.4% | Reduced |
| Journey Strategic Wealth LLC | 2,815 | $464.4K | 0.01% | +1,276+82.9% | Added |
| Vestmark Advisory Solutions, Inc. | 2,775 | $457.8K | 0.01% | +2,775 | New |
| Xponance, Inc. | 2,769 | $456.8K | 0.00% | +838+43.4% | Added |
| Amica Mutual Insurance Co | 2,758 | $455.0K | 0.04% | +406+17.3% | Added |
| Keybank National Association | 2,751 | $453.9K | 0.00% | −490−15.1% | Reduced |
| Qsemble Capital Management, LP | 2,679 | $442.0K | 0.03% | −179−6.3% | Reduced |
| Federation des caisses Desjardins du Quebec | 2,660 | $438.8K | 0.00% | −1,847−41.0% | Reduced |
| Assetmark, Inc | 2,655 | $438.0K | 0.00% | +246+10.2% | Added |
| Evoke Wealth, LLC | 2,628 | $433.7K | 0.01% | +282+12.0% | Added |
| Fox Run Management, L.L.C. | 2,620 | $431.7K | 0.08% | −1,196−31.3% | Reduced |
| Citizens Financial Group Inc | 2,592 | $427.7K | 0.01% | +153+6.3% | Added |
| denkapparat Operations GmbH | 2,574 | $424.7K | 0.18% | 00.0% | Unchanged |
| O'Shaughnessy Asset Management, LLC | 2,574 | $424.7K | 0.00% | +666+34.9% | Added |
| Optimize Financial Inc | 2,559 | $422.2K | 0.21% | +2,559 | New |
| Aviva PLC | 2,500 | $412.4K | 0.00% | −381−13.2% | Reduced |
| Allworth Financial LP | 2,494 | $411.5K | 0.00% | +795+46.8% | Added |
| Transcend Wealth Collective, LLC | 2,483 | $409.6K | 0.03% | −36−1.4% | Reduced |
| Caerus Investment Advisors, LLC | 2,424 | $399.9K | 0.17% | −1,839−43.1% | Reduced |
| Clearstead Advisors, LLC | 2,332 | $384.8K | 0.00% | −50−2.1% | Reduced |
| SRS Capital Advisors, Inc. | 2,298 | $379.1K | 0.01% | +2,286+19,050.0% | Added |
| Sentinus, LLC | 2,290 | $377.8K | 0.03% | +14+0.6% | Added |
| PEAK6 LLC | 2,290 | $377.8K | 0.01% | +2,290 | New |
| CI Private Wealth, LLC | 2,392 | $377.3K | 0.00% | +840+54.1% | Added |
| Two Sigma Securities, LLC | 2,260 | $372.9K | 0.04% | −3,193−58.6% | Reduced |
| CIBC Asset Management Inc | 2,238 | $369.2K | 0.00% | −45−2.0% | Reduced |
| Reynders McVeigh Capital Management, LLC | 2,215 | $365.0K | 0.02% | −75−3.3% | Reduced |
| Bessemer Group Inc | 2,190 | $362.0K | 0.00% | −786−26.4% | Reduced |
| AlphaGrep UK Ltd | 2,192 | $361.6K | 0.11% | +2,192 | New |
| X-Square Capital, LLC | 2,185 | $360.0K | 0.12% | +158+7.8% | Added |
| Swiss Life Asset Management Ltd | 2,142 | $353.4K | 0.00% | +421+24.5% | Added |
| Rothschild Investment LLC | 2,125 | $350.6K | 0.02% | −497−19.0% | Reduced |
| The PNC Financial Services Group, Inc. | 2,125 | $350.6K | 0.00% | +307+16.9% | Added |
| Allegiance Financial Group Advisory Services LLC | 2,113 | $348.6K | 0.07% | +295+16.2% | Added |
| Horizon Kinetics Asset Management LLC | 2,102 | $346.8K | 0.00% | +152+7.8% | Added |
| GWM Advisors LLC | 2,091 | $344.9K | 0.00% | −435−17.2% | Reduced |
| Pinnacle Associates Ltd | 2,032 | $335.2K | 0.00% | +287+16.4% | Added |
| Pinnacle Wealth Management Advisory Group, LLC | 2,032 | $335.2K | 0.02% | +287+16.4% | Added |
| Nwam LLC | 1,984 | $327.3K | 0.02% | +1,984 | New |
| Knightsbridge Asset Management, LLC | 1,981 | $326.8K | 0.04% | +590+42.4% | Added |
| Capital Performance Advisors LLP | 1,976 | $326.0K | 0.02% | −79−3.8% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 1,977 | $326.0K | 0.00% | +350+21.5% | Added |
| RMR Wealth Builders | 1,957 | $322.9K | 0.03% | −1−0.1% | Reduced |
| Machina Capital S.A.S. | 1,949 | $321.5K | 0.06% | +300+18.2% | Added |
| Knollwood Investment Advisory, LLC | 1,934 | $319.1K | 0.03% | 00.0% | Unchanged |
| Utah Retirement Systems | 1,927 | $317.9K | 0.00% | 00.0% | Unchanged |
| Linden Thomas Advisory Services, LLC | 1,924 | $317.4K | 0.03% | +1,924 | New |
| DnB Asset Management AS | 1,902 | $313.8K | 0.00% | +1,902 | New |
| Sym Financial Corp | 1,874 | $309.2K | 0.03% | −275−12.8% | Reduced |
| Pathstone Holdings, LLC | 1,826 | $301.3K | 0.00% | +69+3.9% | Added |
| Gsa Capital Partners LLP | 1,821 | $300.0K | 0.02% | −3,316−64.6% | Reduced |
| Kera Capital Partners, Inc. | 1,761 | $290.5K | 0.04% | 00.0% | Unchanged |
| Ariadne Wealth Management, LP | 1,747 | $288.2K | 0.13% | 00.0% | Unchanged |
| GenTrust, LLC | 1,744 | $287.7K | 0.01% | +134+8.3% | Added |
| Crossmark Global Holdings, Inc. | 1,715 | $282.9K | 0.00% | +366+27.1% | Added |