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Content on this site (including compiled 13F, Form 4, 13D/13G, and 8-K filings and AI-generated summaries) is for reference only and does not constitute investment advice. Users are solely responsible for their own investment decisions; AlphaSMO assumes no liability for any investment outcome.

CIEN

CIEN Institutional Holdings & 13F Data

Ciena CORP

+$20.2B

Net Activity

Institutions Holding

1081

Popularity Rank

#389

Avg Weight

0.29%

Total Value

$53.2B

Ownership Trend

1081 institutions currently hold CIEN, with 620 net buyers and 445 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Majority Increased

Based on recent trading activity

Net Selling Institutions

445

Net Buying Institutions

620

Key Holders

Key Holders

Top 5 by Value

FL
FMR LLC
$8.2B
BI
BlackRock, Inc.
$5.2B
JC
Jpmorgan Chase & Co
$3.7B
VC
Vanguard Capital Management LLC
$3.6B
VP
Vanguard Portfolio Management LLC
$2.9B

Top 5 by Conviction

JC
Jericho Capital Asset Management L.P.
9.50%
AM
Atreides Management, LP
5.25%
LP
Lone Pine Capital LLC
2.51%
PC
Polar Capital Holdings Plc
1.10%
WB
William Blair Investment Management, LLC
0.51%
View all 1081 holding institutions

Across its top 20 institutional holders, CIEN's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 6/100, avg. turnover score 23/100).

Quarterly Activity

Recent Activity

+$25.4B

Total Buy Value

$17.6B

Total Sell Value

New buy303
Trim365
Add317
Sold out80

620

Net Buyers

445

Net Sellers

Smart Money Convergence

CIEN does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Insider Trading (Form 4)

90d confidence

0

unique buyers

—

buy value

data as of 2026-07-17

12-Month Buy/Sell Activity

Jun 25
Sep 25
Dec 25
Mar 26
BuySell
ActionInsiderTitleDateValue
SellBrodie GageSVP Global Products & Supply2026-07-15$539K
SellDino DipernaSVP Global R&D2026-07-15$176K
SellDino DipernaSVP Global R&D2026-07-15$176K
SellDavid M RothensteinSVP and Chief Strategy Officer2026-07-15$1.05M
SellGary B SmithPresident, CEO2026-07-15$1.24M
SellMarc D. GraffSVP & Chief Financial Officer2026-07-01$59K
SellSheela KosarajuSVP and General Counsel2026-07-01$938K
SellJason PhippsSVP Global Sales and Marketing2026-07-01$1.23M
View all insider trades →

Form 144 Pre-Sale Notices

11

Filings (90d)

$14.15M

Total Est. Value

32K shares

Planned Shares

Last Filed 2026-07-15
FilerTitle/RelationshipFiling DatePlanned SharesEst. Value
DAVID ROTHENSTEINOfficer2026-07-153K shares$1.12M
Gary B. SmithOfficer2026-07-1518K shares$7.41M
DINO DIPERNAOfficer2026-07-15782 shares$351K
BRODIE GAGEOfficer2026-07-151K shares$539K
SHEELA KOSARAJUOfficer2026-07-012K shares$938K
MARC GRAFFOfficer2026-07-01126 shares$62K
JASON PHIPPSOfficer2026-07-013K shares$1.23M
Cumello JosephOfficer2026-06-262K shares$769K
Graff Marc D.Officer2026-06-24126 shares$58K
Rothenstein David MOfficer2026-06-153K shares$1.11M

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

171779309

FAQ

Who are the top institutional investors holding CIENA CORP (CIEN)?
Major stakeholders currently include FMR LLC ($8.2B), BlackRock, Inc. ($5.2B), Jpmorgan Chase & Co ($3.7B). Based on the latest 13F filings, there are a total of 1081 tracked investment funds and institutions maintaining positions in CIEN.
What is the overall institutional sentiment toward CIEN recently?
Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $20.2B, driven by 620 managers accumulating shares while 445 reduced their exposure.
Which institutions have been selling or reducing their CIEN positions?
In the latest period, 365 funds trimmed their holdings, and 80 managers completely exited their positions. The aggregate reported sell value was $17.6B.
Are there any notable investors adding CIEN to their portfolios?
Yes, buying activity remains notable. 303 institutions opened new positions in {ticker}, and 317 existing holders added to their shares. The total reported buy value for the quarter amounted to $25.4B.

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