Ciena CORP Schedule 13G passive stakes

FMR LLC and Abigail P. Johnson have reported a combined beneficial ownership of 13.5% in Ciena Corp's common stock as of June 30, 2026.

Vanguard Capital Management has reported a beneficial ownership of 10,568,831 shares, representing 7.47% of Ciena Corp's common stock as of March 31, 2026.

Vanguard Portfolio Management has reported beneficial ownership of over 7.38 million shares, representing 5.22% of Ciena Corp's common stock as of March 31, 2026.

The Vanguard Group reports 0% beneficial ownership in Ciena Corp following an internal realignment that disaggregated reporting responsibilities.

JPMorgan Chase & Co. has filed a Schedule 13G, reporting a 7.7% beneficial ownership stake in Ciena Corporation's common stock.

BlackRock, Inc. has reported a 10.3% beneficial ownership stake in CIENA CORPORATION common stock, holding over 14.5 million shares.

BlackRock, Inc. has filed an amended Schedule 13G, reporting a 9.4% beneficial ownership stake in Ciena Corporation as of March 31, 2025.