CIEN
Ciena Corp
320.70$
-8.2%
vs. previous close
Closing price · As of: Oct 30, 2026
Ownership
Ownership Structure
Who owns Ciena Corp (CIEN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.6% of the shares are freely tradable; institutional investors hold 98.0%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
98.0%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
0.7%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.6%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
4.3%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
142Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 13.48 | 19,113,538 | -9.9 | 06/30/2026 |
| BlackRock Inc | 8.97 | 12,718,494 | -4.9 | 06/30/2026 |
| JPMorgan Chase & Co | 7.90 | 11,206,209 | +9.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 6.51 | 9,233,803 | +0.7 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.42 | 7,680,665 | +4.2 | 06/30/2026 |
| State Street Corp | 4.71 | 6,680,578 | +5.9 | 06/30/2026 |
| T. Rowe Price Associates, Inc. | 2.87 | 4,071,401 | -22.3 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Growth Company Fund | 3.72 | 5,279,405 | -8.3 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.16 | 4,486,499 | -0.1 | 09/30/2026 |
| Vanguard 500 Index Investor | 2.62 | 3,716,707 | -1.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Smith Gary B | President & CEO | 225,455 | 72,303,419 $ | Oct 15, 2026 | direct |
| Rothenstein David M | EVP & Chief Strategy Officer | 172,881 | 55,442,937 $ | Oct 15, 2026 | direct |
| Graff Marc D. | EVP & Chief Financial Officer | 107,136 | 34,358,515 $ | Oct 1, 2026 | direct |
| Kosaraju Sheela | EVP & Chief Legal Officer | 84,065 | 26,959,646 $ | Oct 1, 2026 | direct |
| Phipps Jason | EVP & Chief Customer Officer | 57,388 | 18,404,332 $ | Oct 1, 2026 | direct |
| Cumello Joseph | EVP & General Mgr. | 39,570 | 12,690,099 $ | Sep 25, 2026 | direct |
| DiPerna Dino | EVP & Chief R&D Officer | 36,183 | 11,603,888 $ | Oct 15, 2026 | direct |
| Gage Brodie | EVP & Chief Product & Tech | 34,073 | 10,927,211 $ | Oct 15, 2026 | direct |
| Claflin Bruce L. | Director | 8,279 | 2,655,075 $ | Sep 24, 2026 | indirect |
| Hoffman Grant | EVP & Chief Supply | 6,347 | 2,035,483 $ | Sep 20, 2026 | direct |
| Nevens Thomas Michael | Director | 3,492 | 1,119,884 $ | Sep 24, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | Gage Brodie | EVP & Chief Product & Tech | Sell | 1,200 | 344.08 | 412,896 |
| Oct 15, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Sell | 445 | 350.00 | 155,750 |
| Oct 15, 2026 | Rothenstein David M | EVP & Chief Strategy Officer | Sell | 2,500 | 348.06 | 870,157 |
| Oct 15, 2026 | Smith Gary B | President & CEO | Sell | 2,952 | 348.02 | 1,027,356 |
| Oct 1, 2026 | Smith Gary B | President & CEO | Sell | 2,952 | 369.66 | 1,091,238 |
| Oct 1, 2026 | Graff Marc D. | EVP & Chief Financial Officer | Sell | 97 | 355.19 | 34,453 |
| Oct 1, 2026 | Kosaraju Sheela | EVP & Chief Legal Officer | Sell | 2,101 | 355.19 | 746,254 |
| Oct 1, 2026 | Phipps Jason | EVP & Chief Customer Officer | Sell | 2,629 | 355.19 | 933,795 |
| Sep 25, 2026 | Cumello Joseph | EVP & General Mgr. | Sell | 1,586 | 358.52 | 568,605 |
| Sep 24, 2026 | Claflin Bruce L. | Director | Sell | 2,857 | 355.91 | 1,016,835 |
| Sep 24, 2026 | Nevens Thomas Michael | Director | Other | 2,797 | – | – |
| Sep 23, 2026 | Nevens Thomas Michael | Director | Sell | 3,738 | 359.04 | 1,342,092 |
| Sep 20, 2026 | Hoffman Grant | EVP & Chief Supply | Other | 170 | 348.80 | 59,296 |
| Sep 20, 2026 | Graff Marc D. | EVP & Chief Financial Officer | Other | 286 | 348.80 | 99,757 |
| Sep 20, 2026 | Gage Brodie | EVP & Chief Product & | Other | 231 | 348.80 | 80,573 |
| Sep 20, 2026 | Gage Brodie | EVP & Chief Product & | Other | 388 | 348.80 | 135,334 |
| Sep 20, 2026 | Gage Brodie | EVP & Chief Product & | Other | 669 | 348.80 | 233,347 |
| Sep 20, 2026 | Gage Brodie | EVP & Chief Product & | Other | 442 | 348.80 | 154,170 |
| Sep 20, 2026 | Gage Brodie | EVP & Chief Product & | Other | 204 | 348.80 | 71,155 |
| Sep 20, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Other | 247 | 348.80 | 86,154 |
| Sep 20, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Other | 428 | 348.80 | 149,286 |
| Sep 20, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Other | 730 | 348.80 | 254,624 |
| Sep 20, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Other | 444 | 348.80 | 154,867 |
| Sep 20, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Other | 204 | 348.80 | 71,155 |
| Sep 20, 2026 | Kosaraju Sheela | EVP & Chief Legal Officer | Other | 189 | 348.80 | 65,923 |
| Sep 20, 2026 | Kosaraju Sheela | EVP & Chief Legal Officer | Other | 330 | 348.80 | 115,104 |
| Sep 20, 2026 | Kosaraju Sheela | EVP & Chief Legal Officer | Other | 549 | 348.80 | 191,491 |
| Sep 20, 2026 | Kosaraju Sheela | EVP & Chief Legal Officer | Other | 691 | 348.80 | 241,021 |
| Sep 20, 2026 | Kosaraju Sheela | EVP & Chief Legal Officer | Other | 156 | 348.80 | 54,413 |
| Sep 20, 2026 | Cumello Joseph | EVP & General Mgr. | Other | 331 | 348.80 | 115,453 |
| Sep 20, 2026 | Cumello Joseph | EVP & General Mgr. | Other | 180 | 348.80 | 62,784 |
| Sep 20, 2026 | Cumello Joseph | EVP & General Mgr. | Other | 582 | 348.80 | 203,002 |
| Sep 20, 2026 | Cumello Joseph | EVP & General Mgr. | Other | 182 | 348.80 | 63,482 |
| Sep 20, 2026 | Cumello Joseph | EVP & General Mgr. | Other | 441 | 348.80 | 153,821 |
| Sep 20, 2026 | Phipps Jason | EVP & Chief Customer Officer | Other | 268 | 348.80 | 93,478 |
| Sep 20, 2026 | Phipps Jason | EVP & Chief Customer Officer | Other | 503 | 348.80 | 175,446 |
| Sep 20, 2026 | Phipps Jason | EVP & Chief Customer Officer | Other | 859 | 348.80 | 299,619 |
| Sep 20, 2026 | Phipps Jason | EVP & Chief Customer Officer | Other | 735 | 348.80 | 256,368 |
| Sep 20, 2026 | Rothenstein David M | EVP & Chief Strategy Officer | Other | 220 | 348.80 | 76,736 |
| Sep 20, 2026 | Rothenstein David M | EVP & Chief Strategy Officer | Other | 436 | 348.80 | 152,077 |
| Sep 20, 2026 | Rothenstein David M | EVP & Chief Strategy Officer | Other | 811 | 348.80 | 282,877 |
| Sep 20, 2026 | Rothenstein David M | EVP & Chief Strategy Officer | Other | 204 | 348.80 | 71,155 |
| Sep 20, 2026 | Rothenstein David M | EVP & Chief Strategy Officer | Other | 679 | 348.80 | 236,835 |
| Sep 20, 2026 | Smith Gary B | President & CEO | Other | 937 | 348.80 | 326,826 |
| Sep 20, 2026 | Smith Gary B | President & CEO | Other | 1,743 | 348.80 | 607,958 |
| Sep 20, 2026 | Smith Gary B | President & CEO | Other | 3,102 | 348.80 | 1,081,978 |
| Sep 20, 2026 | Smith Gary B | President & CEO | Other | 2,985 | 348.80 | 1,041,168 |
| Sep 16, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Sell | 249 | 350.00 | 87,150 |
| Sep 15, 2026 | Gage Brodie | EVP & Chief Product & | Sell | 1,200 | 324.86 | 389,832 |
| Sep 15, 2026 | DiPerna Dino | EVP & Chief R&D Officer | Sell | 249 | 324.86 | 80,890 |
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: October 30, 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.