Ciena Ownership | Who Owns Ciena?


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Ciena Ownership Summary


Ciena is owned by 93.94% institutional investors, 0.59% insiders, and 5.47% retail investors. Fmr is the largest institutional shareholder, holding 13.47% of CIEN shares. Fidelity Growth Compy Commingled Pl S is the top mutual fund, with 5.61% of its assets in Ciena shares.

CIEN Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockCiena93.94%0.59%5.47%
SectorTechnology Stocks 53.67%14.96%31.36%
Idea5G Stocks List80.04%8.14%11.82%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Fmr19.11M13.47%$9.38B
Blackrock15.61M10.77%$752.08M
Vanguard group14.38M10.11%$3.36B
Blackrock funding, inc. /de12.72M8.96%$6.24B
Jpmorgan chase11.21M7.89%$5.37B
Vanguard capital management9.23M6.50%$4.53B
State street6.68M4.71%$3.28B
Price t rowe associates inc /md/4.07M2.87%$2.00B
Geode capital management3.37M2.37%$1.65B
American century companies1.85M1.30%$908.41M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Thorntree capital partners lp130.27K8.74%$63.91M
M & l capital management62.93K8.35%$30.87M
Foursixthree capital lp198.50K7.95%$28.92M
North growth management113.00K7.11%$55.47M
Amanah trust200.00K5.76%$98.11M
Tuttle capital management15.63K5.17%$7.67M
Titan global capital management usa80.42K5.03%$39.45M
Riposte capital40.00K4.36%$19.62M
Williamson legacy group17.00K4.14%$8.34M
Analog century management lp226.20K4.06%$110.96M

Top Buyers

HolderShares% AssetsChange
Norges bank1.70M0.08%1.70M
American century companies1.85M0.40%1.32M
Sixth street partners management company1.25M0.08%1.25M
Jpmorgan chase11.21M0.30%979.56K
Nuveen1.39M0.16%547.24K

Top Sellers

HolderShares% AssetsChange
Slate path capital lp---2.18M
Fmr19.11M0.41%-2.10M
Capital research global investors656.55K0.04%-2.09M
Price t rowe associates inc /md/4.07M0.20%-1.17M
Jericho capital asset management561.51K2.28%-1.09M

New Positions

HolderShares% AssetsChangeValue
Norges bank1.70M0.08%1.70M$835.50M
Sixth street partners management company1.25M0.08%1.25M$612.71M
Artisan partners limited partnership434.29K0.09%434.29K$63.26M
Altshuler shaham368.34K0.73%368.34K$58.32M
Axa investment managers316.24K0.12%316.24K$46.07M

Sold Out

HolderChange
Fairman group-1.00
Clayton financial group-1.00
New millennium group-1.00
Tfo-tdc-2.00
Mendota financial group-2.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 20261,27213.07%133,353,097-0.70%931.05%71813.79%3956.18%
Mar 31, 20261,10625.11%133,944,777-10.16%940.85%61921.85%36634.07%
Dec 31, 2025602-16.27%92,892,719-33.26%650.68%339-5.57%190-27.20%
Sep 30, 202569019.17%138,609,2541.30%971.06%34713.77%24943.93%
Jun 30, 20255881.20%140,305,9213.37%981.09%3088.07%176-8.33%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
Fidelity Growth Compy Commingled Pl S7.94M5.61%-492.60K
Fidelity Growth Company Fund6.05M4.27%-346.40K
iShares Core S&P Mid-Cap ETF4.63M3.28%-
Vanguard US Total Market Shares ETF4.57M3.21%3.85K
Vanguard MStar Total Stk Mkt Idx Invest4.50M3.18%12.92K
Vanguard Total Stock Mkt Idx Inv4.49M3.17%-13.10K
Vanguard Morn Total Stk Mkt Idx Investor4.49M3.17%-13.10K
JPMorgan Large Cap Growth I4.31M3.04%979.70K
Fidelity Growth Compy Commingled Pl O4.10M2.84%15.49K
Vanguard 500 Index Investor3.71M2.62%39.29K

Recent Insider Transactions


DateNameRoleActivityValue
Aug 14, 2026Graff Marc D. SVP & Chief Financial OfficerSell$2.15M
Aug 14, 2026Rothenstein David M SVP and Chief Strategy OfficerSell$1.10M
Aug 17, 2026SMITH GARY B President, CEOSell$1.32M
Aug 17, 2026Gage Brodie SVP Global Products & SupplySell$527.09K
Aug 03, 2026SMITH GARY B President, CEOSell$1.12M

Insider Transactions Trends


DateBuySell
2026 Q3-14
2026 Q2-32
2026 Q1-18
2025 Q4-19
2025 Q3-18

CIEN Ownership FAQ


Who owns the most shares of Ciena?

Ciena’s largest shareholders are Fmr (19.11M shares, 13.47%), Blackrock (15.61M shares, 10.77%), and Vanguard group (14.38M shares, 10.11%). Together, they hold 34.35% of Ciena’s total shares outstanding.

Does Blackrock own Ciena?

Yes, BlackRock owns 10.77% of Ciena, totaling 15.61M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 752.08M$. In the last quarter, BlackRock increased its holdings by 230.88K shares, a 1.50% change.

Who is Ciena’s biggest shareholder by percentage of total assets invested?

Thorntree capital partners lp is Ciena’s biggest shareholder by percentage of total assets invested, with 8.74% of its assets in 130.27K Ciena shares, valued at 63.91M$.

Who is the top mutual fund holder of Ciena shares?

Fidelity Growth Compy Commingled Pl S is the top mutual fund holder of Ciena shares, with 5.61% of its total shares outstanding invested in 7.94M Ciena shares.

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