Ciena Corp (CIEN)
Who owns Ciena Corp (CIEN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.5% of the shares are freely tradable; institutional investors hold 98.0%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.98 | 21,209,756 | +0.4 | 03/31/2026 |
| Vanguard Group Inc | 10.16 | 14,376,579 | -4.6 | 12/31/2025 |
| BlackRock Inc | 9.45 | 13,373,787 | -19.8 | 03/31/2026 |
| JPMorgan Chase & Co | 7.22 | 10,226,649 | -5.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.48 | 9,169,355 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.21 | 7,369,124 | +0.0 | 03/31/2026 |
| State Street Corp | 4.46 | 6,309,050 | +23.6 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 3.70 | 5,242,802 | +29.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Growth Compy Commingled Pl S | 6.11 | 8,655,865 | -4.5 | 04/30/2026 |
| Fidelity Growth Company Fund | 4.70 | 6,656,301 | -2.8 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 15. Jul 2026 | Gage Brodie | SVP Global Products & Supply | Sell | 1,200 | 449.15 | 538,980 |
| 15. Jul 2026 | DiPerna Dino | SVP Global R&D | Sell | 391 | 449.15 | 175,618 |
| 15. Jul 2026 | Rothenstein David M | SVP and Chief Strategy Officer | Sell | 2,500 | 420.91 | 1,052,284 |
| 15. Jul 2026 | Smith Gary B | President, CEO | Sell | 2,952 | 421.10 | 1,243,098 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.