Who owns MKTX
432 institutions reported holding MKTX for 2026Q1, together 108% of the company, fewer than the 472 a quarter earlier.
432
Institutions reporting a position · as of 2026Q1 · down from 472 the quarter before
- Shares held by institutions
- 38.1M
Shares held by institutions · 108% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $6.29B
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 45%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 52
- New positions
- 52
- Positions exited
- 98
- Added to
- 170
- Reduced
- 135
- Top 10 holdersof the company
- 63%
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 432 | 38.1M | $6.29B |
| 2025Q4 | 472 | 36.4M | $6.60B |
| 2025Q3 | 440 | 35.5M | $6.19B |
| 2025Q2 | 524 | 36.8M | $8.22B |
| 2025Q1 | 503 | 37.2M | $8.04B |
| 2024Q4 | 511 | 37.7M | $8.51B |
| 2024Q3 | 499 | 36.6M | $9.42B |
| 2024Q2 | 460 | 37.3M | $7.48B |
| 2024Q1 | 453 | 36.9M | $8.10B |
| 2023Q4 | 494 | 37.1M | $10.9B |
| 2023Q3 | 478 | 37.3M | $7.97B |
| 2023Q2 | 506 | 37.7M | $9.86B |
| 2023Q1 | 526 | 36.9M | $14.4B |
| 2022Q4 | 491 | 36.8M | $10.3B |
| 2022Q3 | 475 | 36.8M | $8.18B |
| 2022Q2 | 497 | 36.2M | $9.26B |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Inc. | 4.1M | 12% | $672M |
| VANGUARD GROUP INC | 4.1M | 11% | $670M |
| PRIMECAP MANAGEMENT CO/CA/ | 3.3M | 9.5% | $552M |
| AQR CAPITAL MANAGEMENT LLC | 2.7M | 7.6% | $443M |
| North Reef Capital Management LP | 1.9M | 5.3% | $309M |
| FMR LLC | 1.5M | 4.3% | $251M |
| STATE STREET CORP | 1.3M | 3.6% | $211M |
| VAN ECK ASSOCIATES CORP | 1.2M | 3.5% | $204M |
| MILLENNIUM MANAGEMENT LLC | 1.1M | 3.1% | $179M |
| BANK OF MONTREAL /CAN/ | 1.0M | 2.9% | $168M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
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