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 |
|---|---|---|---|---|---|
| Fred Alger Management, LLC | 11,594 | $1.91M | 0.01% | −55−0.5% | Reduced |
| Buckingham Strategic Partners | 11,908 | $1.96M | 0.02% | −1,174−9.0% | Reduced |
| Jump Financial, LLC | 12,556 | $2.07M | 0.03% | +1,999+18.9% | Added |
| Jane Street Group, LLC | 12,740 | $2.10M | 0.00% | +348+2.8% | Added |
| State of New Jersey Common Pension Fund D | 12,841 | $2.12M | 0.01% | −342−2.6% | Reduced |
| Exchange Traded Concepts, LLC | 13,032 | $2.15M | 0.02% | +453+3.6% | Added |
| Brighton Jones LLC | 13,098 | $2.16M | 0.05% | +13,098 | New |
| Public Employees Retirement System of Ohio | 13,269 | $2.19M | 0.01% | +563+4.4% | Added |
| Merit Financial Group, LLC | 13,710 | $2.26M | 0.02% | +336+2.5% | Added |
| Man Group plc | 13,738 | $2.27M | 0.00% | −15,635−53.2% | Reduced |
| Barclays PLC | 13,847 | $2.28M | 0.00% | −14,055−50.4% | Reduced |
| Sanctuary Advisors, LLC | 14,015 | $2.31M | 0.01% | −116−0.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 14,105 | $2.33M | 0.01% | −336−2.3% | Reduced |
| Toroso Investments, LLC | 14,642 | $2.42M | 0.01% | −1,263−7.9% | Reduced |
| Elo Mutual Pension Insurance Co | 14,686 | $2.42M | 0.04% | +14,686 | New |
| Vanguard Global Advisers, LLC | 14,948 | $2.47M | 0.00% | +14,948 | New |
| Colony Group, LLC | 15,054 | $2.48M | 0.00% | +908+6.4% | Added |
| Envestnet Asset Management Inc | 15,286 | $2.52M | 0.00% | +12,839+524.7% | Added |
| Treasurer of the State of North Carolina | 15,606 | $2.58M | 0.01% | +337+2.2% | Added |
| Police & Firemen's Retirement System of New Jersey | 15,845 | $2.61M | 0.02% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 15,858 | $2.62M | 0.01% | −55,800−77.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 16,012 | $2.64M | 0.02% | +6,810+74.0% | Added |
| American Century Companies Inc | 16,192 | $2.67M | 0.00% | +1,111+7.4% | Added |
| Louisiana State Employees Retirement System | 16,500 | $2.72M | 0.05% | −500−2.9% | Reduced |
| State of Tennessee, Treasury Department | 16,682 | $2.75M | 0.01% | −891−5.1% | Reduced |
| CenterBook Partners LP | 16,706 | $2.76M | 0.15% | +16,706 | New |
| Cinctive Capital Management LP | 17,582 | $2.90M | 0.19% | −5,271−23.1% | Reduced |
| Franklin Resources Inc | 17,603 | $2.90M | 0.00% | +6,797+62.9% | Added |
| Winton Group Ltd | 18,018 | $2.97M | 0.10% | −18,346−50.5% | Reduced |
| Guardian Capital LP | 18,300 | $3.02M | 0.08% | −5,400−22.8% | Reduced |
| State of Alaska, Department of Revenue | 18,394 | $3.03M | 0.03% | −529−2.8% | Reduced |
| Walleye Trading LLC | 19,070 | $3.15M | 0.06% | +19,070 | New |
| Russell Investments Group, Ltd. | 19,172 | $3.16M | 0.00% | −1,947−9.2% | Reduced |
| Algert Global LLC | 19,440 | $3.21M | 0.05% | −39,870−67.2% | Reduced |
| Captrust Financial Advisors | 19,708 | $3.25M | 0.01% | +1,454+8.0% | Added |
| Agf Management Ltd | 19,955 | $3.29M | 0.01% | +1,983+11.0% | Added |
| Hunter Perkins Capital Management, LLC | 19,992 | $3.30M | 0.77% | +2,790+16.2% | Added |
| New York State Common Retirement Fund | 20,179 | $3.33M | 0.00% | −83−0.4% | Reduced |
| Illinois Municipal Retirement Fund | 20,313 | $3.35M | 0.04% | +1,372+7.2% | Added |
| Lombard Odier Asset Management (Europe) Ltd | 20,930 | $3.45M | 0.19% | −2,570−10.9% | Reduced |
| HSBC Holdings PLC | 21,009 | $3.47M | 0.00% | +18,165+638.7% | Added |
| Citigroup Inc | 21,390 | $3.53M | 0.00% | −10,006−31.9% | Reduced |
| Canada Pension Plan Investment Board | 22,800 | $3.76M | 0.00% | −27,800−54.9% | Reduced |
| Creative Planning | 23,074 | $3.81M | 0.00% | +7,813+51.2% | Added |
| ExodusPoint Capital Management, LP | 23,975 | $3.96M | 0.04% | +23,975 | New |
| Bank of Nova Scotia | 24,612 | $4.06M | 0.01% | +11,429+86.7% | Added |
| Readystate Asset Management LP | 24,935 | $4.11M | 0.24% | +1,562+6.7% | Added |
| Interval Partners, LP | 26,478 | $4.37M | 0.15% | −49,945−65.4% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 27,410 | $4.52M | 0.01% | +22,570+466.3% | Added |
| Geneva Capital Management LLC | 27,533 | $4.54M | 0.10% | +87+0.3% | Added |
| Robertson Opportunity Capital, LLC | 28,830 | $4.76M | 1.83% | 00.0% | Unchanged |
| Taylor Hoffman Capital Management LLC | 28,863 | $4.76M | 1.47% | +5,280+22.4% | Added |
| Alps Advisors Inc | 28,895 | $4.77M | 0.02% | +28,895 | New |
| Baillie Gifford & Co | 29,032 | $4.79M | 0.00% | −10,083−25.8% | Reduced |
| SEI Investments Co | 30,231 | $4.99M | 0.00% | +16,047+113.1% | Added |
| Royal Bank of Canada | 30,923 | $5.10M | 0.00% | +616+2.0% | Added |
| Thrivent Financial for Lutherans | 31,141 | $5.14M | 0.01% | −732−2.3% | Reduced |
| Van Den Berg Management I, Inc | 31,423 | $5.18M | 1.19% | +1,024+3.4% | Added |
| New York State Teachers Retirement System | 31,584 | $5.21M | 0.01% | −3,903−11.0% | Reduced |
| Prana Capital Management, LP | 31,593 | $5.21M | 0.16% | −8,378−21.0% | Reduced |
| Mercer Global Advisors Inc | 31,957 | $5.27M | 0.01% | +2,358+8.0% | Added |
| Bahl & Gaynor Inc | 32,626 | $5.38M | 0.03% | −2,420−6.9% | Reduced |
| GW&K Investment Management, LLC | 32,697 | $5.39M | 0.05% | +2,118+6.9% | Added |
| Vanguard Asset Management, Ltd | 33,466 | $5.52M | 0.00% | +33,466 | New |
| Prudential Financial Inc | 33,744 | $5.57M | 0.01% | −619−1.8% | Reduced |
| Great West Life Assurance Co | 33,909 | $5.60M | 0.01% | −1,132−3.2% | Reduced |
| State Board of Administration of Florida Retirement System | 35,037 | $5.78M | 0.01% | −1,004−2.8% | Reduced |
| State of Wisconsin Investment Board | 35,472 | $5.85M | 0.01% | +2,082+6.2% | Added |
| Stifel Financial Corp | 35,697 | $5.89M | 0.01% | +2,473+7.4% | Added |
| Price T Rowe Associates Inc | 36,920 | $6.09M | 0.00% | +2,945+8.7% | Added |
| Deutsche Bank AG | 37,476 | $6.18M | 0.00% | +31,753+554.8% | Added |
| Caisse de Depot Et Placement du Quebec | 38,887 | $6.42M | 0.01% | +16,403+73.0% | Added |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 39,370 | $6.50M | 0.23% | +10,063+34.3% | Added |
| Wilson Asset Management (International) Pty Ltd | 39,461 | $6.51M | 1.84% | 00.0% | Unchanged |
| First Trust Advisors LP | 39,492 | $6.52M | 0.00% | −3,463−8.1% | Reduced |
| DF Dent & Co Inc | 41,000 | $6.76M | 0.13% | −1,116−2.6% | Reduced |
| Schonfeld Strategic Advisors LLC | 42,596 | $7.03M | 0.06% | −57,639−57.5% | Reduced |
| California State Teachers Retirement System | 43,688 | $7.21M | 0.01% | +8,478+24.1% | Added |
| Holocene Advisors, LP | 43,799 | $7.23M | 0.02% | −171,056−79.6% | Reduced |
| T. Rowe Price Investment Management, Inc. | 44,278 | $7.30M | 0.01% | −71,926−61.9% | Reduced |
| Alliancebernstein L.P. | 41,259 | $7.48M | 0.00% | +20,710+100.8% | Added |
| Quantinno Capital Management LP | 46,990 | $7.75M | 0.01% | +5,761+14.0% | Added |
| ICICI Prudential Asset Management Co Ltd | 49,289 | $8.13M | 0.98% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 56,172 | $8.87M | 0.02% | +9,635+20.7% | Added |
| Heartland Advisors Inc | 58,334 | $9.62M | 0.49% | +29,913+105.2% | Added |
| Gotham Asset Management, LLC | 60,213 | $9.93M | 0.03% | +31,491+109.6% | Added |
| Ameriprise Financial Inc | 69,885 | $11.5M | 0.00% | −13,477−16.2% | Reduced |
| Trexquant Investment LP | 70,378 | $11.6M | 0.08% | +31,806+82.5% | Added |
| California Public Employees Retirement System | 72,522 | $12.0M | 0.01% | −24,664−25.4% | Reduced |
| Swiss National Bank | 73,700 | $12.2M | 0.01% | 00.0% | Unchanged |
| CWM, LLC | 73,978 | $12.2M | 0.03% | −1,687−2.2% | Reduced |
| Mariner, LLC | 79,144 | $13.1M | 0.02% | +19,884+33.6% | Added |
| Citadel Advisors LLC | 82,159 | $13.6M | 0.01% | −543,049−86.9% | Reduced |
| Goodman Financial Corp | 83,163 | $13.7M | 2.36% | +6,869+9.0% | Added |
| Cerity Partners LLC | 84,001 | $13.9M | 0.02% | +2,036+2.5% | Added |
| Rhumbline Advisers | 89,961 | $14.8M | 0.01% | +1,769+2.0% | Added |
| Legal & General Group Plc | 90,720 | $15.0M | 0.00% | −6,549−6.7% | Reduced |
| Polar Asset Management Partners Inc. | 104,174 | $17.2M | 0.41% | +87,474+523.8% | Added |
| Assenagon Asset Management S.A. | 104,801 | $17.3M | 0.03% | +41,573+65.8% | Added |
| UBS Asset Management Americas Inc | 107,110 | $17.7M | 0.00% | −1,318−1.2% | Reduced |