Ciena · ownership
Who owns Ciena?
FMR LLC is the largest 13F holder: 14.4% of 13F-reported shares calc.
1,225 institutions report 132.3M Ciena shares in Form 13F, as of quarter end Jun 30, 2026; −2.0M shares vs Mar 31, 2026.
- FMR LLC14.4%19.1M shares · −2.1M vs prior quarter (down) · 13F filed Aug 13, 2026
- BlackRock, Inc.9.6%12.7M shares · −655K vs prior quarter (down) · 13F filed Aug 7, 2026
- JPMORGAN CHASE & CO8.5%11.2M shares · +980K vs prior quarter (up) · 13F filed Aug 12, 2026
- VANGUARD CAPITAL MANAGEMENT LLC7.0%9.2M shares · +64K vs prior quarter (up) · 13F filed Aug 13, 2026
- VANGUARD PORTFOLIO MANAGEMENT LLC5.8%7.7M shares · +312K vs prior quarter (up) · 13F filed Aug 13, 2026
- STATE STREET CORP5.1%6.7M shares · +372K vs prior quarter (up) · 13F filed Aug 7, 2026
- PRICE T ROWE ASSOCIATES INC /MD/3.1%4.1M shares · −1.2M vs prior quarter (down) · 13F filed Aug 14, 2026
- GEODE CAPITAL MANAGEMENT, LLC2.5%3.4M shares · −695K vs prior quarter (down) · 13F filed Aug 12, 2026
- AMERICAN CENTURY COMPANIES INC1.4%1.9M shares · +1.3M vs prior quarter (up) · 13F filed Aug 12, 2026
- BANK OF AMERICA CORP /DE/1.4%1.8M shares · −166K vs prior quarter (down) · 13F filed Aug 14, 2026
- Capital World Investors1.3%1.8M shares · +31K vs prior quarter (up) · 13F filed Aug 12, 2026
- Invesco Ltd.1.3%1.7M shares · +200K vs prior quarter (up) · 13F filed Aug 14, 2026
- NORGES BANK1.3%1.7M shares · +1.7M vs prior quarter (new position) · 13F filed Aug 12, 2026
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP1.3%1.7M shares · +289K vs prior quarter (up) · 13F filed Aug 13, 2026
- MORGAN STANLEY1.2%1.6M shares · +73K vs prior quarter (up) · 13F filed Aug 13, 2026
- Nuveen, LLC1.1%1.4M shares · +547K vs prior quarter (up) · 13F filed Aug 11, 2026
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC0.9%1.2M shares · −23K vs prior quarter (down) · 13F filed Aug 14, 2026
- NORTHERN TRUST CORP0.9%1.2M shares · +31K vs prior quarter (up) · 13F filed Aug 13, 2026
- DIMENSIONAL FUND ADVISORS LP0.9%1.2M shares · +7K vs prior quarter (up) · 13F filed Aug 11, 2026
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC0.9%1.1M shares · +294K vs prior quarter (up) · 13F filed Aug 13, 2026
Share of 13F-reported shares, not of shares outstanding. 13F covers managers with over $100M in US equities; it is not a full shareholder list.
Method and sources
Source: SEC Form 13F data sets (bulk). Each row links to the holder’s own 13F-HR filing. Holder names exactly as filed; one group can file under several names and CIKs (for example two Vanguard entities), and they are listed separately, as filed.
% = the holder’s shares ÷ all shares reported in 13F filings for this company and quarter (calculated by Hollsteen). This is not a share of shares outstanding. Change = shares vs the same filer’s 13F for the prior quarter (Mar 31, 2026).
Erroneous filings and rows are handled by a fixed rule set (restatements replace originals; non-equity rows and implausible rows excluded): 12 erroneous filings excluded or replaced this quarter. No market values are shown.
SEC filings only. No price or market data.
Who holds more than 5%?
4 current Schedule 13D/13G holders
Schedule 13D/13G filings (10) ›
- FMR LLC 13.5%
13G/A filed Aug 6, 2026 · event date Jun 30, 2026 · 5 earlier filings
- BlackRock, Inc. 8%
13G/A filed Apr 24, 2026 · event date Mar 31, 2026 · 13 earlier filings
- VANGUARD CAPITAL MANAGEMENT LLC 7.47%
13G filed Apr 29, 2026 · event date Mar 31, 2026
- VANGUARD PORTFOLIO MANAGEMENT LLC 5.22%
13G filed Apr 29, 2026 · event date Mar 31, 2026
- JPMORGAN CHASE & CO 3.9%
below 5% latest filing reports under 5% · 13G/A filed Sep 3, 2026 · event date Aug 31, 2026 · 1 earlier filing
- VANGUARD GROUP INC 0%
below 5% latest filing reports under 5% · 13G/A filed Mar 26, 2026 · event date Mar 13, 2026 · 8 earlier filings
- Bank of New York Mellon Corp 4.69%
stale filed Jan 22, 2019: older than 18 months, not a current holding · 13G/A filed Jan 22, 2019 · 1 earlier filing
- TIAA CREF INVESTMENT MANAGEMENT LLC 3.87%
stale filed Feb 14, 2018, as of Dec 31, 2017: older than 18 months, not a current holding · 13G/A filed Feb 14, 2018
- TEACHERS ADVISORS, LLC 3.87%
stale filed Feb 14, 2018, as of Dec 31, 2017: older than 18 months, not a current holding · 13G/A filed Feb 14, 2018
- Invesco Ltd. 4.1%
stale filed Feb 7, 2018, as of Dec 29, 2017: older than 18 months, not a current holding · 13G/A filed Feb 7, 2018
Method and sources
Schedule 13D (active) and 13G (passive) are filed by holders of more than 5% of a class. The percentage is the holder’s own cover-page “percent of class”. A filing older than 18 months (filed before 2025-04-17) is marked stale and is never shown as a current holding. Data as of Oct 15, 2026.
SEC filings only.
Are insiders buying or selling?
0 open-market purchases, 93 sales in 12 months
Form 4, Oct 15, 2025 – Oct 15, 2026 · 0 shares bought, 332,215 shares sold (net −332K) · as of Oct 15, 2026
Latest 25 of 549 Form 4 transactions ›
| Date | Insider (as filed) | Transaction | Shares | Held after |
|---|---|---|---|---|
| Oct 1, 2026 | Graff Marc D. · EVP & Chief Financial Officer | Open-market sale · 10b5-1 | 97 disposed | 107,136 |
| Oct 1, 2026 | Kosaraju Sheela · EVP & Chief Legal Officer | Open-market sale · 10b5-1 | 2,101 disposed | 84,065 |
| Oct 1, 2026 | Phipps Jason · EVP & Chief Customer Officer | Open-market sale · 10b5-1 | 2,629 disposed | 57,388 |
| Oct 1, 2026 | SMITH GARY B · Director; President & CEO | Open-market sale · 10b5-1 | 2,952 disposed | 228,407 |
| Sep 25, 2026 | Cumello Joseph · EVP & General Mgr. | Open-market sale · 10b5-1 | 1,586 disposed | 39,570 |
| Sep 24, 2026 | NEVENS THOMAS MICHAEL · Director | Gift | 2,797 disposed | 3,492 |
| Sep 24, 2026 | Claflin Bruce L. · Director | Open-market sale | 2,857 disposed | 8,279 |
| Sep 23, 2026 | NEVENS THOMAS MICHAEL · Director | Open-market sale | 3,738 disposed | 6,289 |
| Sep 20, 2026 | Hoffman Grant · EVP & Chief Supply | Tax withholding | 170 disposed | 6,347 |
| Sep 20, 2026 | Graff Marc D. · EVP & Chief Financial Officer | Tax withholding | 286 disposed | 107,233 |
| Sep 20, 2026 | Gage Brodie · EVP & Chief Product & | Tax withholding | 204 disposed | 37,003 |
| Sep 20, 2026 | Gage Brodie · EVP & Chief Product & | Tax withholding | 442 disposed | 36,561 |
| Sep 20, 2026 | Gage Brodie · EVP & Chief Product & | Tax withholding | 669 disposed | 35,892 |
| Sep 20, 2026 | Gage Brodie · EVP & Chief Product & | Tax withholding | 388 disposed | 35,504 |
| Sep 20, 2026 | Gage Brodie · EVP & Chief Product & | Tax withholding | 231 disposed | 35,273 |
| Sep 20, 2026 | DiPerna Dino · EVP & Chief R&D Officer | Tax withholding | 204 disposed | 38,922 |
| Sep 20, 2026 | DiPerna Dino · EVP & Chief R&D Officer | Tax withholding | 444 disposed | 38,478 |
| Sep 20, 2026 | DiPerna Dino · EVP & Chief R&D Officer | Tax withholding | 730 disposed | 37,748 |
| Sep 20, 2026 | DiPerna Dino · EVP & Chief R&D Officer | Tax withholding | 428 disposed | 37,320 |
| Sep 20, 2026 | DiPerna Dino · EVP & Chief R&D Officer | Tax withholding | 247 disposed | 37,073 |
| Sep 20, 2026 | Kosaraju Sheela · EVP & Chief Legal Officer | Tax withholding | 156 disposed | 87,925 |
| Sep 20, 2026 | Kosaraju Sheela · EVP & Chief Legal Officer | Tax withholding | 691 disposed | 87,234 |
| Sep 20, 2026 | Kosaraju Sheela · EVP & Chief Legal Officer | Tax withholding | 549 disposed | 86,685 |
| Sep 20, 2026 | Kosaraju Sheela · EVP & Chief Legal Officer | Tax withholding | 330 disposed | 86,355 |
| Sep 20, 2026 | Kosaraju Sheela · EVP & Chief Legal Officer | Tax withholding | 189 disposed | 86,166 |
Method and sources
Form 4 filings (not 4/A), table I. Open market = transaction codes P (purchase) and S (sale); grants, option exercises, tax withholding and gifts are listed but not counted as buys or sells. Shares and share counts only, as filed; Hollsteen shows no per-share prices. Data is an export, as of Oct 15, 2026, not live.
SEC filings only.