MARKETAXESS HOLDINGS INC - MKTX
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Aug 14, 2026 | SCHEDULE 13G/A | North Reef Capital Management LP | 9.55% | 3,395,000 | View |
| Aug 14, 2026 | SCHEDULE 13G/A | North Reef Capital Management GP LLC | 9.55% | 3,395,000 | View |
| Aug 14, 2026 | SCHEDULE 13G/A | James Hanna, III | 9.55% | 3,395,000 | View |
| Aug 13, 2026 | SCHEDULE 13G/A | AQR Capital Management, LLC | 5.59% | 1,987,288 | View |
| Aug 13, 2026 | SCHEDULE 13G/A | AQR Capital Management Holdings, LLC | 5.59% | 1,987,288 | View |
| Aug 06, 2026 | SCHEDULE 13G/A | PRIMECAP MANAGEMENT CO/CA/ | 9.86% | 3,504,905 | View |
| May 15, 2026 | SCHEDULE 13G | North Reef Capital Management LP | 5.27% | 1,875,000 | View |
| May 15, 2026 | SCHEDULE 13G | North Reef Capital Management GP LLC | 5.27% | 1,875,000 | View |
| May 15, 2026 | SCHEDULE 13G | James Hanna, III | 5.27% | 1,875,000 | View |
| May 06, 2026 | SCHEDULE 13G/A | FMR LLC | 4.2% | 1,500,929 | View |
| May 06, 2026 | SCHEDULE 13G/A | Abigail P. Johnson | 4.2% | 1,500,929 | View |
| Apr 30, 2026 | SCHEDULE 13G | Vanguard Capital Management | 5.32% | 1,892,096 | View |
| Apr 29, 2026 | SCHEDULE 13G | Vanguard Portfolio Management | 6.09% | 2,168,085 | View |
| Mar 27, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.