VANGUARD PORTFOLIO MANAGEMENT LLC 13D and 13G filings for Cogent Communications Holdings, Inc.:
- 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.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 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 |
| 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 |