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 |
|---|---|---|---|---|---|
| Qsemble Capital Management, LP | 2,679 | $442.0K | 0.03% | −179−6.3% | Reduced |
| Keybank National Association | 2,751 | $453.9K | 0.00% | −490−15.1% | Reduced |
| Amica Mutual Insurance Co | 2,758 | $455.0K | 0.04% | +406+17.3% | Added |
| Xponance, Inc. | 2,769 | $456.8K | 0.00% | +838+43.4% | Added |
| Vestmark Advisory Solutions, Inc. | 2,775 | $457.8K | 0.01% | +2,775 | New |
| Journey Strategic Wealth LLC | 2,815 | $464.4K | 0.01% | +1,276+82.9% | Added |
| Jackson Thornton Asset Management, LLC | 2,785 | $478.9K | 0.04% | −545−16.4% | Reduced |
| Waddell & Associates, LLC | 2,926 | $482.7K | 0.03% | +154+5.6% | Added |
| Twin Tree Management, LP | 2,949 | $486.5K | 0.10% | +1,722+140.3% | Added |
| waypoint wealth counsel | 2,954 | $487.4K | 0.25% | +414+16.3% | Added |
| US Bancorp | 2,968 | $489.7K | 0.00% | −618−17.2% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 3,002 | $495.2K | 0.00% | −205−6.4% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 3,054 | $503.8K | 0.01% | −2,106−40.8% | Reduced |
| Inspire Advisors, LLC | 3,057 | $504.4K | 0.04% | +67+2.2% | Added |
| EverSource Wealth Advisors, LLC | 3,098 | $511.1K | 0.02% | +272+9.6% | Added |
| Entropy Technologies, LP | 3,192 | $526.6K | 0.02% | +3,192 | New |
| Vident Advisory, LLC | 3,202 | $528.3K | 0.00% | −15,782−83.1% | Reduced |
| HB Wealth Management, LLC | 3,222 | $531.6K | 0.00% | +658+25.7% | Added |
| New Age Alpha Advisors, LLC | 3,244 | $535.2K | 0.03% | −71−2.1% | Reduced |
| Parcion Private Wealth LLC | 3,252 | $536.5K | 0.03% | −78−2.3% | Reduced |
| CIBC Bancorp USA Inc. | 3,310 | $546.2K | 0.00% | +3,310 | New |
| D. E. Shaw & Co., Inc. | 3,314 | $546.7K | 0.00% | −32,785−90.8% | Reduced |
| Warren Averett Asset Management, LLC | 3,366 | $555.3K | 0.00% | +466+16.1% | Added |
| Larson Financial Group LLC | 3,410 | $562.5K | 0.02% | +366+12.0% | Added |
| Blueshift Asset Management, LLC | 3,464 | $571.5K | 0.17% | +3,464 | New |
| Lido Advisors, LLC | 3,551 | $585.8K | 0.00% | +493+16.1% | Added |
| TD Asset Management Inc | 3,567 | $588.5K | 0.00% | −621−14.8% | Reduced |
| TD Waterhouse Canada Inc. | 3,567 | $588.6K | 0.00% | +3,567 | New |
| JustInvest LLC | 3,595 | $593.1K | 0.01% | −391−9.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 3,614 | $596.2K | 0.00% | +3,614 | New |
| Essential Partners LLC | 3,706 | $611.4K | 0.21% | −1,467−28.4% | Reduced |
| Chicago Partners Investment Group LLC | 3,905 | $635.1K | 0.01% | +14+0.4% | Added |
| Jacobs Levy Equity Management, Inc | 3,908 | $644.7K | 0.00% | +594+17.9% | Added |
| Public Employees Retirement Association of Colorado | 3,908 | $645.0K | 0.00% | 00.0% | Unchanged |
| CIBC World Markets Inc. | 3,992 | $658.6K | 0.00% | −6,261−61.1% | Reduced |
| Northwest & Ethical Investments L.P. | 4,036 | $665.9K | 0.02% | −1,700−29.6% | Reduced |
| DRW Securities, LLC | 4,098 | $676.1K | 0.04% | +4,098 | New |
| Balyasny Asset Management LLC | 4,185 | $690.4K | 0.00% | −28,510−87.2% | Reduced |
| LPL Financial LLC | 4,253 | $701.7K | 0.00% | +379+9.8% | Added |
| Mutual of America Capital Management LLC | 4,254 | $701.8K | 0.01% | +5+0.1% | Added |
| PDT Partners, LLC | 4,280 | $706.1K | 0.04% | 00.0% | Unchanged |
| Hennion & Walsh Asset Management, Inc. | 4,368 | $720.6K | 0.02% | +119+2.8% | Added |
| New York Life Investment Management LLC | 4,445 | $733.3K | 0.01% | +990+28.7% | Added |
| Nordea Investment Management AB | 4,542 | $748.6K | 0.00% | −919−16.8% | Reduced |
| NorthCrest Asset Manangement, LLC | 4,437 | $760.8K | 0.02% | −2,130−32.4% | Reduced |
| Virtu Financial LLC | 4,742 | $782.0K | 0.03% | +4,742 | New |
| RMB Capital Management, LLC | 4,740 | $782.0K | 0.01% | +1,750+58.5% | Added |
| Engineers Gate Manager LP | 4,865 | $802.6K | 0.01% | +4,865 | New |
| Wells Fargo & Company | 4,927 | $812.8K | 0.00% | −368−6.9% | Reduced |
| Ancora Advisors, LLC | 5,001 | $825.1K | 0.02% | +662+15.3% | Added |
| Alyeska Investment Group, L.P. | 5,042 | $831.8K | 0.00% | +5,042 | New |
| RNC Capital Management LLC | 5,118 | $844.4K | 0.04% | +1,535+42.8% | Added |
| Ensign Peak Advisors, Inc | 5,167 | $852.5K | 0.00% | −11,495−69.0% | Reduced |
| DekaBank Deutsche Girozentrale | 5,080 | $854.0K | 0.00% | 00.0% | Unchanged |
| Sivia Capital Partners, LLC | 5,178 | $854.3K | 0.17% | +1,297+33.4% | Added |
| Axq Capital, LP | 5,190 | $856.2K | 0.11% | +2,377+84.5% | Added |
| Nisa Investment Advisors, LLC | 5,231 | $863.0K | 0.00% | +1,294+32.9% | Added |
| Advisor Group Holdings, Inc. | 5,330 | $879.7K | 0.00% | +1,888+54.9% | Added |
| Bridgewater Associates, LP | 5,608 | $925.2K | 0.00% | −7,653−57.7% | Reduced |
| Pictet Asset Management Holding SA | 5,610 | $925.5K | 0.00% | +290+5.5% | Added |
| Diversified Trust Co | 5,655 | $933.0K | 0.02% | +3,278+137.9% | Added |
| Evolve Private Wealth, LLC | 5,700 | $940.4K | 0.05% | −2,038−26.3% | Reduced |
| Parvin Asset Management, LLC | 5,770 | $951.9K | 0.70% | −4−0.1% | Reduced |
| HighTower Advisors, LLC | 5,836 | $962.9K | 0.00% | +2,929+100.8% | Added |
| Voya Investment Management LLC | 5,844 | $964.1K | 0.00% | +968+19.9% | Added |
| SG Americas Securities, LLC | 6,032 | $995.0K | 0.00% | −5,400−47.2% | Reduced |
| Toronto Dominion Bank | 6,035 | $997.0K | 0.00% | +254+4.4% | Added |
| Redwood Investment Management, LLC | 6,262 | $1.03M | 0.13% | +6,262 | New |
| Dynamic Technology Lab Private Ltd | 6,363 | $1.05M | 0.17% | +6,363 | New |
| Bull Harbor Capital LLC | 6,378 | $1.05M | 0.28% | +6,378 | New |
| Empowered Funds, LLC | 6,474 | $1.07M | 0.01% | +5,218+415.4% | Added |
| Jones Financial Companies LLLP | 6,674 | $1.10M | 0.00% | +4,826+261.1% | Added |
| Stiles Financial Services Inc | 6,767 | $1.12M | 0.34% | −208−3.0% | Reduced |
| Quantbot Technologies LP | 6,940 | $1.14M | 0.05% | +1,279+22.6% | Added |
| Maryland State Retirement & Pension System | 7,147 | $1.18M | 0.02% | −34−0.5% | Reduced |
| Oak Thistle LLC | 7,370 | $1.22M | 0.12% | −2,522−25.5% | Reduced |
| Weiss Asset Management LP | 7,490 | $1.24M | 0.02% | +7,490 | New |
| IFP Advisors, Inc | 7,741 | $1.28M | 0.03% | +3,475+81.5% | Added |
| Baird Financial Group, Inc. | 7,753 | $1.28M | 0.00% | −11,591−59.9% | Reduced |
| Integrated Wealth Concepts LLC | 7,796 | $1.29M | 0.01% | −164−2.1% | Reduced |
| Dark Forest Capital Management LP | 8,044 | $1.33M | 0.12% | +3,416+73.8% | Added |
| Manufacturers Life Insurance Company, The | 8,050 | $1.33M | 0.00% | −65−0.8% | Reduced |
| Jefferies Financial Group Inc. | 8,190 | $1.35M | 0.02% | +3,432+72.1% | Added |
| KLP Kapitalforvaltning AS | 8,200 | $1.35M | 0.01% | +200+2.5% | Added |
| Krilogy Financial LLC | 7,884 | $1.37M | 0.04% | +77+1.0% | Added |
| Summit Trail Advisors, LLC | 8,402 | $1.39M | 0.02% | +2,568+44.0% | Added |
| Oregon Public Employees Retirement Fund | 8,499 | $1.40M | 0.02% | −45−0.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 9,192 | $1.52M | 0.01% | −11−0.1% | Reduced |
| Handelsbanken Fonder AB | 9,344 | $1.54M | 0.01% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 9,410 | $1.55M | 0.00% | +9,410 | New |
| Los Angeles Capital Management LLC | 9,581 | $1.58M | 0.01% | −4,032−29.6% | Reduced |
| XTX Topco Ltd | 9,828 | $1.62M | 0.03% | −4,404−30.9% | Reduced |
| Yousif Capital Management, LLC | 10,116 | $1.67M | 0.02% | −26−0.3% | Reduced |
| Fifth Third Bancorp | 10,140 | $1.67M | 0.00% | +7,894+351.5% | Added |
| Arizona State Retirement System | 10,210 | $1.68M | 0.01% | −132−1.3% | Reduced |
| Walled Lake Planning & Wealth Management, LLC | 10,544 | $1.74M | 0.51% | +212+2.1% | Added |
| Natixis Advisors, L.P. | 10,880 | $1.79M | 0.00% | +10,880 | New |
| Alpha Omega Wealth Management LLC | 10,895 | $1.80M | 0.29% | +3,580+48.9% | Added |
| Pallas Capital Advisors LLC | 11,133 | $1.84M | 0.07% | −2,491−18.3% | Reduced |
| Amalgamated Bank | 11,305 | $1.86M | 0.01% | −421−3.6% | Reduced |