Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-08-07 09:05 am Purchase | 2026-06-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | STATE STREET CORP STT | 2,779,396 5.500% | 2,779,396 (New Position) | Filing History |
| 2026-07-31 11:25 am Sale | 2026-06-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VANGUARD PORTFOLIO MANAGEMENT LLC | 2,431,530 4.850% | -359,612 (-12.88%) | Filing History |
| 2026-06-17 4:15 pm Purchase | 2026-06-10 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | Park West Asset Management LLC | 2,806,339 5.600% | 259,834 (+10.20%) | Filing History |
| 2026-05-22 4:15 pm Purchase | 2026-05-15 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | Park West Asset Management LLC | 2,546,505 5.100% | 2,546,505 (New Position) | Filing History |
| 2026-04-29 12:34 pm Purchase | 2026-03-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VANGUARD PORTFOLIO MANAGEMENT LLC | 2,791,142 5.570% | 2,791,142 (New Position) | Filing History |
| 2026-03-26 5:15 pm Sale | 2026-03-13 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VANGUARD GROUP INC | 0 0.000% | -5,081,633 (Position Closed) | Filing History |
| 2026-02-17 4:26 pm Sale | 2025-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | Turtle Creek Asset Management Inc. | 4,036,847 8.200% | -567,086 (-12.32%) | Filing History |
| 2026-01-23 10:57 am Purchase | 2025-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | BlackRock Inc. BLK | 7,068,397 14.400% | 670,457 (+10.48%) | Filing History |
| 2025-11-14 4:50 pm Purchase | 2025-09-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | Turtle Creek Asset Management Inc. | 4,603,933 9.400% | 1,811,222 (+64.86%) | Filing History |
| 2025-08-14 5:31 pm Purchase | 2025-06-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | Turtle Creek Asset Management Inc. | 2,792,711 5.700% | 2,792,711 (New Position) | Filing History |
| 2025-07-18 2:31 pm Sale | 2025-06-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | BlackRock Inc. BLK | 6,397,940 13.000% | -476,847 (-6.94%) | Filing History |
| 2024-11-08 2:17 pm Unchanged | 2024-09-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | BlackRock Inc. BLK | 6,874,787 14.000% | 0 (Unchanged) | Filing History |
| 2024-10-23 5:04 pm Sale | 2024-09-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | BlackRock Inc. BLK | 6,874,787 14.000% | -461,254 (-6.29%) | Filing History |
| 2024-02-13 5:02 pm Sale | 2023-12-29 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VANGUARD GROUP INC | 5,081,633 10.450% | -144,398 (-2.76%) | Filing History |
| 2024-01-26 2:30 pm Sale | 2023-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VAUGHAN NELSON INVESTMENT MANAGEMENT L.P. | 0 0.000% | -2,565,270 (Position Closed) | Filing History |
| 2024-01-22 3:52 pm Sale | 2023-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | BlackRock Inc. BLK | 7,336,041 15.100% | -137,887 (-1.84%) | Filing History |
| 2023-02-09 11:15 am Purchase | 2022-12-30 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VANGUARD GROUP INC | 5,226,031 10.890% | 390,869 (+8.08%) | Filing History |
| 2023-02-03 5:19 pm Purchase | 2022-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | VAUGHAN NELSON INVESTMENT MANAGEMENT L.P. | 2,565,270 5.340% | 2,565,270 (New Position) | Filing History |
| 2023-01-30 09:45 am Purchase | 2022-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | BlackRock Inc. BLK | 7,473,928 15.600% | 401,873 (+5.68%) | Filing History |
| 2022-02-10 5:50 pm Sale | 2021-12-31 | 13G | COGENT COMMUNICATIONS HLDGS IN CCOI | Renaissance Technologies LLC | 2,178,356 4.570% | -518,800 (-19.24%) | Filing History |