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 |
|---|---|---|---|---|---|
| RWM Asset Management, LLC | 362 | $59.7K | 0.01% | +362 | New |
| Anchor Investment Management, LLC | 374 | $61.7K | 0.01% | 00.0% | Unchanged |
| Salomon & Ludwin, LLC | 417 | $71.5K | 0.01% | +156+59.8% | Added |
| Covestor Ltd | 436 | $72.0K | 0.05% | −375−46.2% | Reduced |
| Pacer Advisors, Inc. | 444 | $73.0K | 0.00% | +164+58.6% | Added |
| MAI Capital Management | 443 | $73.1K | 0.00% | +380+603.2% | Added |
| Root Financial Partners, LLC | 482 | $79.5K | 0.00% | +440+1,047.6% | Added |
| Eurizon Capital SGR S.p.A. | 580 | $96.0K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 597 | $98.5K | 0.00% | +1+0.2% | Added |
| True Wealth Design, LLC | 623 | $102.8K | 0.03% | −64−9.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 679 | $112.0K | 0.02% | +172+33.9% | Added |
| Pinnacle Wealth Planning Services, Inc. | 737 | $121.6K | 0.01% | −134−15.4% | Reduced |
| Northwestern Mutual Wealth Management Co | 819 | $135.2K | 0.00% | +323+65.1% | Added |
| South Dakota Investment Council | 850 | $140.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 872 | $143.9K | 0.00% | −1−0.1% | Reduced |
| Hantz Financial Services, Inc. | 897 | $148.0K | 0.00% | +280+45.4% | Added |
| Whittier Trust Co of Nevada Inc | 864 | $151.3K | 0.00% | +800+1,250.0% | Added |
| Horizon Investments, LLC | 921 | $151.9K | 0.00% | +921 | New |
| CX Institutional | 952 | $157.0K | 0.00% | −139−12.7% | Reduced |
| Archer Investment Corp | 993 | $163.8K | 0.03% | +993 | New |
| Bard Associates Inc | 1,159 | $191.2K | 0.05% | +1,033+819.8% | Added |
| Farther Finance Advisors, LLC | 1,175 | $194.6K | 0.00% | −28−2.3% | Reduced |
| KBC Group NV | 1,194 | $197.0K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 1,223 | $201.8K | 0.00% | −933−43.3% | Reduced |
| Hamilton Capital Partners Inc. | 1,239 | $204.4K | 0.01% | 00.0% | Unchanged |
| Shelton Capital Management | 1,244 | $205.2K | 0.00% | 00.0% | Unchanged |
| Retirement Planning Co of New England, Inc. | 1,248 | $205.9K | 0.08% | −29−2.3% | Reduced |
| Fi3 FINANCIAL ADVISORS, LLC | 1,258 | $207.5K | 0.06% | −350−21.8% | Reduced |
| Tower Research Capital LLC (TRC) | 1,281 | $211.3K | 0.01% | −330−20.5% | Reduced |
| Kornitzer Capital Management Inc | 1,289 | $212.7K | 0.00% | −25−1.9% | Reduced |
| Empirical Finance, LLC | 1,296 | $213.8K | 0.01% | −17−1.3% | Reduced |
| Globeflex Capital L P | 1,371 | $226.2K | 0.03% | −277−16.8% | Reduced |
| Odyssean, LLC | 1,381 | $227.8K | 0.08% | −2,776−66.8% | Reduced |
| Omers Administration Corp | 1,390 | $229.3K | 0.00% | 00.0% | Unchanged |
| QTR Family Wealth, LLC | 1,349 | $230.7K | 0.10% | −23−1.7% | Reduced |
| Wick Capital Partners, LLC | 1,404 | $231.6K | 0.04% | +234+20.0% | Added |
| Guardian Partners Inc. | 1,401 | $231.7K | 0.02% | −99−6.6% | Reduced |
| Vise Technologies, Inc. | 1,282 | $232.4K | 0.00% | 00.0% | Unchanged |
| Fieldview Capital Management, LLC | 1,410 | $232.6K | 0.07% | −775−35.5% | Reduced |
| Legacy Financial Advisors, Inc. | 1,440 | $237.6K | 0.03% | +183+14.6% | Added |
| GAMMA Investing LLC | 1,444 | $238.2K | 0.01% | +22+1.5% | Added |
| Benedict Financial Advisors Inc | 1,447 | $238.7K | 0.05% | −224−13.4% | Reduced |
| Skopos Labs, Inc. | 1,448 | $238.9K | 0.01% | +325+28.9% | Added |
| Teacher Retirement System of Texas | 1,460 | $240.9K | 0.00% | −34,680−96.0% | Reduced |
| Abundance Wealth Counselors | 1,498 | $247.1K | 0.04% | +1,498 | New |
| Aquatic Capital Management LLC | 1,508 | $248.8K | 0.01% | −19,755−92.9% | Reduced |
| Argos Wealth Advisors, LLC | 1,561 | $257.5K | 0.07% | +162+11.6% | Added |
| R Squared Ltd | 1,590 | $262.3K | 0.14% | +1,590 | New |
| Morningstar Investment Management LLC | 1,602 | $264.3K | 0.02% | −21,405−93.0% | Reduced |
| Dundas Partners LLP | 1,604 | $264.6K | 0.02% | −298−15.7% | Reduced |
| Nomura Holdings Inc | 1,607 | $265.1K | 0.00% | +44+2.8% | Added |
| Beese Fulmer Investment Management, Inc. | 1,711 | $282.3K | 0.02% | +257+17.7% | Added |
| Crossmark Global Holdings, Inc. | 1,715 | $282.9K | 0.00% | +366+27.1% | Added |
| GenTrust, LLC | 1,744 | $287.7K | 0.01% | +134+8.3% | Added |
| Ariadne Wealth Management, LP | 1,747 | $288.2K | 0.13% | 00.0% | Unchanged |
| Kera Capital Partners, Inc. | 1,761 | $290.5K | 0.04% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 1,821 | $300.0K | 0.02% | −3,316−64.6% | Reduced |
| Pathstone Holdings, LLC | 1,826 | $301.3K | 0.00% | +69+3.9% | Added |
| Sym Financial Corp | 1,874 | $309.2K | 0.03% | −275−12.8% | Reduced |
| DnB Asset Management AS | 1,902 | $313.8K | 0.00% | +1,902 | New |
| Linden Thomas Advisory Services, LLC | 1,924 | $317.4K | 0.03% | +1,924 | New |
| Utah Retirement Systems | 1,927 | $317.9K | 0.00% | 00.0% | Unchanged |
| Knollwood Investment Advisory, LLC | 1,934 | $319.1K | 0.03% | 00.0% | Unchanged |
| Machina Capital S.A.S. | 1,949 | $321.5K | 0.06% | +300+18.2% | Added |
| RMR Wealth Builders | 1,957 | $322.9K | 0.03% | −1−0.1% | Reduced |
| 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 |
| Knightsbridge Asset Management, LLC | 1,981 | $326.8K | 0.04% | +590+42.4% | Added |
| Nwam LLC | 1,984 | $327.3K | 0.02% | +1,984 | New |
| 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 |
| GWM Advisors LLC | 2,091 | $344.9K | 0.00% | −435−17.2% | Reduced |
| Horizon Kinetics Asset Management LLC | 2,102 | $346.8K | 0.00% | +152+7.8% | Added |
| Allegiance Financial Group Advisory Services LLC | 2,113 | $348.6K | 0.07% | +295+16.2% | Added |
| The PNC Financial Services Group, Inc. | 2,125 | $350.6K | 0.00% | +307+16.9% | Added |
| Rothschild Investment LLC | 2,125 | $350.6K | 0.02% | −497−19.0% | Reduced |
| Swiss Life Asset Management Ltd | 2,142 | $353.4K | 0.00% | +421+24.5% | Added |
| X-Square Capital, LLC | 2,185 | $360.0K | 0.12% | +158+7.8% | Added |
| AlphaGrep UK Ltd | 2,192 | $361.6K | 0.11% | +2,192 | New |
| Bessemer Group Inc | 2,190 | $362.0K | 0.00% | −786−26.4% | Reduced |
| Reynders McVeigh Capital Management, LLC | 2,215 | $365.0K | 0.02% | −75−3.3% | Reduced |
| CIBC Asset Management Inc | 2,238 | $369.2K | 0.00% | −45−2.0% | Reduced |
| Two Sigma Securities, LLC | 2,260 | $372.9K | 0.04% | −3,193−58.6% | Reduced |
| CI Private Wealth, LLC | 2,392 | $377.3K | 0.00% | +840+54.1% | Added |
| Sentinus, LLC | 2,290 | $377.8K | 0.03% | +14+0.6% | Added |
| PEAK6 LLC | 2,290 | $377.8K | 0.01% | +2,290 | New |
| SRS Capital Advisors, Inc. | 2,298 | $379.1K | 0.01% | +2,286+19,050.0% | Added |
| Clearstead Advisors, LLC | 2,332 | $384.8K | 0.00% | −50−2.1% | Reduced |
| Caerus Investment Advisors, LLC | 2,424 | $399.9K | 0.17% | −1,839−43.1% | Reduced |
| Transcend Wealth Collective, LLC | 2,483 | $409.6K | 0.03% | −36−1.4% | Reduced |
| Allworth Financial LP | 2,494 | $411.5K | 0.00% | +795+46.8% | Added |
| Aviva PLC | 2,500 | $412.4K | 0.00% | −381−13.2% | Reduced |
| Optimize Financial Inc | 2,559 | $422.2K | 0.21% | +2,559 | New |
| 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 |
| Citizens Financial Group Inc | 2,592 | $427.7K | 0.01% | +153+6.3% | Added |
| Fox Run Management, L.L.C. | 2,620 | $431.7K | 0.08% | −1,196−31.3% | Reduced |
| Evoke Wealth, LLC | 2,628 | $433.7K | 0.01% | +282+12.0% | Added |
| Assetmark, Inc | 2,655 | $438.0K | 0.00% | +246+10.2% | Added |
| Federation des caisses Desjardins du Quebec | 2,660 | $438.8K | 0.00% | −1,847−41.0% | Reduced |