Institutional Ownership
Ciena Corp
CUSIP 171779309COM NEWCIENQ1 2026
13D / 13G Filings
22
Schedule 13D/13G on record
Beneficial Filers
5
Distinct reporting persons
Largest Stake
15.0%
Max % of class reported
Institutional Holders
1,066
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
22 filings · latest Jan 21, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 21, 2026 | Jpmorgan Chase &Amp; Co. | 13G | 7.7% | 10.85M | SEC |
| 2 | Dec 4, 2025 | Blackrock, Inc. | 13G/A | 10.3% | 14.54M | SEC |
| 3 | Apr 17, 2025 | Blackrock, Inc. | 13G/A | 9.4% | 13.39M | SEC |
| 4 | Nov 12, 2024 | Fmr LLC | 13G/A | 15.0% | — | SEC |
| 5 | Feb 13, 2024 | Vanguard Group Inc | 13G/A | 10.4% | 15.03M | SEC |
| 6 | Feb 12, 2024 | Fmr LLC | 13G/A | 10.2% | — | SEC |
| 7 | Feb 9, 2024 | Fmr LLC | 13G/A | 7.8% | — | SEC |
| 8 | Jan 30, 2024 | Blackrock Inc. | 13G/A | 11.3% | 16.30M | SEC |
| 9 | Jun 9, 2023 | Vanguard Group Inc | 13G/A | 10.0% | 14.95M | SEC |
| 10 | Feb 9, 2023 | Vanguard Group Inc | 13G/A | 9.7% | 14.34M | SEC |
12 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Ciena Corp.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Fmr LLC | 21.21M | $8.23B |
| 2 | Blackrock, Inc. | 13.37M | $5.19B |
| 3 | Jpmorgan Chase & Co | 10.23M | $3.73B |
| 4 | State Street Corp | 6.31M | $2.45B |
| 5 | Geode Capital Management, LLC | 4.07M | $1.58B |
| 6 | Capital Research Global Investors | 2.75M | $1.07B |
| 7 | Bank Of America Corp /De/ | 1.95M | $758.85M |
| 8 | Capital World Investors | 1.72M | $669.62M |
| 9 | Jericho Capital Asset Management L.P. | 1.66M | $642.98M |
| 10 | Morgan Stanley | 1.56M | $606.24M |