| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2024-02-16 | T. Rowe Price Investment Management, Inc. | MARKETAXESS HOLDINGS INC | 1,228,330 | 3.2% | EDGAR |
| SC 13G/A | 2024-02-14 | GUARDIAN CAPITAL LP | MARKETAXESS HOLDINGS INC | 1,882,832 | 5.0% | EDGAR |
| SC 13G | 2024-02-14 | T. Rowe Price Investment Management, Inc. | MARKETAXESS HOLDINGS INC | 1,228,330 | 3.2% | EDGAR |
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | MARKETAXESS HOLDINGS INC | 4,526,422 | 11.9% | EDGAR |
| SC 13G/A | 2024-01-25 | BlackRock Inc. | MARKETAXESS HOLDINGS INC | 3,178,566 | 8.4% | EDGAR |
| SC 13G/A | 2023-03-08 | BlackRock Inc. | MARKETAXESS HOLDINGS INC | 3,820,652 | 10.2% | EDGAR |
| SC 13G | 2023-02-15 | GUARDIAN CAPITAL LP | MARKETAXESS HOLDINGS INC | 1,910,101 | 5.1% | EDGAR |
| SC 13G/A | 2023-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | MARKETAXESS HOLDINGS INC | 325,702 | 0.9% | EDGAR |
| SC 13G | 2023-02-14 | T. Rowe Price Investment Management, Inc. | MARKETAXESS HOLDINGS INC | 2,071,391 | 5.5% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | MARKETAXESS HOLDINGS INC | 4,291,798 | 11.4% | EDGAR |
| SC 13G | 2023-01-25 | BlackRock Inc. | MARKETAXESS HOLDINGS INC | 3,320,494 | 8.8% | EDGAR |
| SC 13G | 2022-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | MARKETAXESS HOLDINGS INC | 3,668,968 | 9.6% | EDGAR |
| SC 13G/A | 2022-02-10 | VANGUARD GROUP INC | MARKETAXESS HOLDINGS INC | 4,159,090 | 10.9% | EDGAR |
| SC 13G/A | 2022-02-03 | BlackRock Inc. | MARKETAXESS HOLDINGS INC | 3,563,993 | 9.4% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | MARKETAXESS HOLDINGS INC | 4,165,820 | 11.0% | EDGAR |
| SC 13G/A | 2021-01-29 | BlackRock Inc. | MARKETAXESS HOLDINGS INC | 3,435,510 | 9.1% | EDGAR |
| SC 13G/A | 2020-08-05 | BAILLIE GIFFORD & CO | MARKETAXESS HOLDINGS INC | 1,555,156 | 4.1% | EDGAR |
| SC 13G/A | 2020-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | MARKETAXESS HOLDINGS INC | 1,783,052 | 4.7% | EDGAR |
| SC 13G/A | 2020-02-14 | BAILLIE GIFFORD & CO | MARKETAXESS HOLDINGS INC | 3,021,606 | 8.0% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | MARKETAXESS HOLDINGS INC | 3,992,666 | 10.5% | EDGAR |