VANGUARD GROUP INC 13D and 13G filings for Ciena Corporation:
- 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 |
| 2024-02-13 5:02 pm Purchase | 2023-12-29 | 13G | Ciena Corporation CIEN | VANGUARD GROUP INC | 15,026,070 10.370% | 71,292 (+0.48%) | Filing |
| 2023-06-09 2:15 pm Purchase | 2023-05-31 | 13G | Ciena Corporation CIEN | VANGUARD GROUP INC | 14,954,778 10.030% | 611,605 (+4.26%) | Filing |
| 2023-02-09 11:12 am Sale | 2022-12-30 | 13G | Ciena Corporation CIEN | VANGUARD GROUP INC | 14,343,173 9.660% | -206,011 (-1.42%) | Filing |
| 2022-02-09 3:33 pm Purchase | 2021-12-31 | 13G | Ciena Corporation CIEN | VANGUARD GROUP INC | 14,549,184 9.390% | 236,437 (+1.65%) | Filing |
| 2021-02-10 10:46 am Sale | 2020-12-31 | 13G | Ciena Corporation CIEN | VANGUARD GROUP INC | 14,312,747 9.260% | -249,029 (-1.71%) | Filing |