Ciena
CIEN · NYSE
Who owns CIEN
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 49.2% of CIEN’s shares.
- Fidelity Management & Research Company LLC13.3%
- Vanguard Capital Management, LLC6.5%
- BlackRock Institutional Trust Company, N.A.5.9%
- JP Morgan Asset Management5.7%
- Next 6 largest institutions17.8%
- All other shareholders50.8%
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Management & Research Company LLC | 18.87M | 13.33% |
| Vanguard Capital Management, LLC | 9.23M | 6.52% |
| BlackRock Institutional Trust Company, N.A. | 8.30M | 5.86% |
| JP Morgan Asset Management | 8.01M | 5.66% |
| Vanguard Portfolio Management, LLC | 7.68M | 5.43% |
| State Street Investment Management (US) | 6.68M | 4.72% |
| T. Rowe Price Associates, Inc. | 3.86M | 2.73% |
| Geode Capital Management, L.L.C. | 3.37M | 2.38% |
| American Century Investment Management, Inc. | 1.85M | 1.31% |
| Capital World Investors | 1.76M | 1.24% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Growth Company Fund | 5.76M | 4.07% |
| Vanguard Total Stock Market Index Fund | 4.50M | 3.18% |
| JPMorgan Large Cap Growth Fund | 3.77M | 2.66% |
| Vanguard 500 Index Fund | 3.71M | 2.62% |
| Vanguard Mid-Cap Index Fund | 3.06M | 2.16% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $31.73M (35 trades) of CIEN on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| SMITH GARY B | Sale | 2.95K | $1.09M |
| Graff Marc D. | Sale | 97 | $34.45K |
| Kosaraju Sheela | Sale | 2.10K | $746.25K |
| Phipps Jason | Sale | 2.63K | $933.79K |
| Cumello Joseph | Sale | 1.59K | $568.60K |
| Claflin Bruce L. | Sale | 2.86K | $1.02M |
| NEVENS THOMAS MICHAEL | Gift | 2.80K | — |
| NEVENS THOMAS MICHAEL | Sale | 3.74K | $1.34M |
| Hoffman Grant | Tax withholding | 170 | $59.30K |
| Graff Marc D. | Tax withholding | 286 | $99.76K |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Alan ArmstrongSenator | Purchase | $1K–$15K | Mar 30, 2026 |
| Alan ArmstrongSenator | Purchase | $1K–$15K | Mar 27, 2026 |
| Lisa McClainHouse | Sale | $1K–$15K | Oct 31, 2025 |
| Lisa McClainHouse | Purchase | $1K–$15K | Oct 30, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.87M
- Days to cover
- 1.44
- % of shares outstanding
- 2.73%
- Average daily volume
- 2.68M
- Change since last report
- +7.7%
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