Ciena

CIEN • NYSE

Ciena is a communication equipment company in the technology sector on NYSE, led by Mary Jane Smith, with a market cap of $27.6B. As of Q3 2025, 98% of shares are held by 673 institutional investors, with FMR LLC as the largest holder at 14.97%.

CEOMary Jane Smith

Market Cap$27.6B

Communication Equipment

Technology

Employees8.5K

Websiteciena.com

Country

United States of America

Overview

Overview of institutional ownership in CIEN as of Q3 2025 with a market cap of $20.6B

All Institutions

Institutions: 673
Value Held: $20.1B
Shares Held: 138.2M
Avg Position: $29.9M
Median Position: $1.0M

Hedge Funds

Hedge Funds: 75
Value Held: $2.6B
Shares Held: 17.9M
Avg Position: $34.8M
Median Position: $4.2M

Ownership Breakdown

Institutional (non-HF)

85.14%

$17.5B

Hedge Funds

12.66%

$2.6B

Retail & Other

2.2%

$452.2M

Based on market cap of $20.6B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in CIEN as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
FMR LLC Institution	-	$3.1B 0.16% of portfolio	14.97% 21.2M shares	≤ Q2 2013 Held for 12y 5m+	$1.92T
B BlackRock, Inc. Institution	-	$2.3B 0.04% of portfolio	11.03% 15.6M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$2.2B 0.03% of portfolio	10.66% 15.1M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
JPMORGAN CHASE & CO Institution	Jamie Dimon CEO	$941.5M 0.06% of portfolio	4.57% 6.5M shares	≤ Q2 2013 Held for 12y 5m+	$1.56T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$634.0M 0.02% of portfolio	3.08% 4.4M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
BANK OF AMERICA CORP /DE/ Institution	Brian T. Moynihan CEO	$456.2M 0.03% of portfolio	2.22% 3.1M shares	≤ Q2 2013 Held for 12y 5m+	$1.33T
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	Robert W Sharps President	$385.7M 0.04% of portfolio	1.87% 2.6M shares	≤ Q2 2013 Held for 12y 5m+	$912.31B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$370.3M 0.02% of portfolio	1.80% 2.5M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
B BNP Paribas Investment Partners S.A. Institution	-	$365.1M 0.96% of portfolio	1.77% 2.5M shares	Q2 2015 Held for 10y 5m	$37.9B
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager	Brent Walker Gledhill CEO	$355.6M 0.92% of portfolio	1.73% 2.4M shares	Q1 2025 Held for 8 months	$38.7B

Net Capital Flow

Institutional buying and selling activity for CIEN in Q3 2025

Net Flow: −$992.9M
Buyers: 202
Sellers: 299
Total Bought: +$1.8B
Total Sold: −$2.8B
Avg Position: $34.0M

Biggest Buyers

Institution	Net Bought	Current Position
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	+$347.5M +2.4M shares	$385.7M 2.6M shares
JPMORGAN CHASE & CO Institution	+$177.7M +1.2M shares	$941.5M 6.5M shares
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	+$159.3M +1.1M shares	$166.6M 1.1M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$156.9M +1.1M shares	$158.3M 1.1M shares
Invesco Ltd. ETF Provider	+$139.4M +957.2K shares	$180.4M 1.2M shares
J Jericho Capital Asset Management L.P. Hedge Fund•Long/Short	+$94.4M +648.0K shares	$288.9M 2.0M shares
W Whale Rock Capital Management LLC Hedge Fund•Long/Short	+$73.1M +502.0K shares	$194.9M 1.3M shares
C CI INVESTMENTS INC. Institution	+$44.0M +301.9K shares	$44.1M 302.4K shares
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$40.9M +281.5K shares	$218.4M 1.5M shares
A Amundi Institution	+$38.8M +253.3K shares	$43.6M 284.8K shares

Biggest Sellers

Institution	Net Sold	Current Position
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	−$316.6M −2.2M shares	$84.6M 581.0K shares
BARROW HANLEY MEWHINNEY & STRAUSS LLC Long Only Manager	−$304.9M −2.1M shares	$314.6M 2.2M shares
B BlackRock, Inc. Institution	−$214.3M −1.5M shares	$2.3B 15.6M shares
I Ion Asset Management Ltd. Institution	−$145.6M −999.3K shares	$30.9M 211.9K shares
RIMA SENVEST MANAGEMENT, L.L.C. Hedge Fund•Multi-Strategy	−$114.7M −787.7K shares	$126.3M 867.3K shares
R Rokos Capital Management LLP Hedge Fund•Global Macro	−$91.7M −629.0K shares	$53.7M 368.4K shares
B BNP Paribas Investment Partners S.A. Institution	−$81.2M −557.4K shares	$365.1M 2.5M shares
VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. Long Only Manager	−$76.0M −522.0K shares	$104.0M 713.7K shares
N Neuberger Berman Group LLC Institution	−$75.6M −519.5K shares	$138.6M 952.2K shares
THRIVENT FINANCIAL FOR LUTHERANS Insurance Manager	−$70.6M −484.9K shares	$7.2M 49.4K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited CIEN in Q3 2025

New Positions: 88
New Value: $557.1M
Exited Positions: 47
Exited Value: $206.9M

New Positions

Institution	Position Value
LONE PINE CAPITAL LLC Hedge Fund•Long/Short	$292.3M 2.0M shares
A Anatole Investment Management Ltd Institution	$76.3M 523.7K shares
Artisan Partners Limited Partnership Long Only Manager	$63.3M 434.3K shares
F FengHe Fund Management Pte. Ltd. Institution	$36.5M 250.4K shares
G GF FUND MANAGEMENT CO. LTD. Institution	$16.7M 114.6K shares
Portolan Capital Management, LLC Hedge Fund•Long/Short	$12.9M 88.8K shares
Atika Capital Management LLC Hedge Fund•Long/Short	$11.7M 80.0K shares
Diameter Capital Partners LP Hedge Fund•Credit Arb	$9.0M 62.0K shares
IEQ CAPITAL, LLC RIA/Wealth	$5.7M 39.0K shares
D Dilation Capital Management LP Long Only Manager	$2.9M 19.6K shares

Exited Positions

Institution	Previous Position
Woodline Partners LP Hedge Fund•Long/Short	$35.3M 434.5K shares
SG Capital Management LLC Hedge Fund•Event Driven	$32.9M 404.7K shares
SORA INVESTORS LLC Hedge Fund•Long/Short	$23.0M 283.0K shares
C CAXTON ASSOCIATES LLP Institution	$20.3M 250.0K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$13.5M 166.5K shares
Channing Capital Management, LLC Long Only Manager	$11.4M 139.6K shares
D DDD Partners, LLC Institution	$9.2M 113.1K shares
WESTERLY CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	$8.9M 110.0K shares
ARDSLEY ADVISORY PARTNERS Hedge Fund•Long/Short	$8.9M 110.0K shares
M Mondrian Capital Management, LLC Hedge Fund•Long/Short	$8.3M 101.8K shares

Options Activity

Institutions with the largest Call and Put options positions in CIEN as of Q3 2025

Call Positions: 21
Call Value: $356.2M
Put Positions: 18
Put Value: $189.8M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$93.0M 6.4K contracts
P PEAK6 LLC Institution	$56.5M 3.9K contracts
J JANE STREET GROUP, LLC Institution	$49.4M 3.4K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$43.6M 3.0K contracts
B BlueCrest Capital Management Ltd Institution	$24.8M 1.7K contracts
Walleye Trading LLC RIA/Wealth	$16.2M 1.1K contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$16.0M 1.1K contracts
W WOLVERINE TRADING, LLC Institution	$10.5M 729.0 contracts
S Squarepoint Ops LLC Hedge Fund•Quant	$10.0M 684.0 contracts
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$6.6M 455.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$62.0M 4.3K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$29.5M 2.0K contracts
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$19.9M 1.4K contracts
T Twin Tree Management, LP Hedge Fund•Vol Arbitrage	$18.2M 1.3K contracts
BANK OF AMERICA CORP /DE/ Institution	$11.7M 800.0 contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$10.8M 741.0 contracts
J JANE STREET GROUP, LLC Institution	$8.1M 555.0 contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$5.6M 382.0 contracts
W WOLVERINE TRADING, LLC Institution	$5.4M 372.0 contracts
D DYMON ASIA CAPITAL PTE. LTD. Institution	$3.6M 250.0 contracts

Most Committed Institutions

Institutions with CIEN as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
F FOURSIXTHREE CAPITAL LP Hedge Fund•Credit Arb	William Michael Kelly Founder	11.45% $28.9M	0.14% 198.5K shares	Q2 2025 Held for 5 months	$252.5M
N North Growth Management Ltd. Institution	-	8.07% $47.3M	0.23% 325.0K shares	Q4 2017 Held for 7y 11m	$586.6M
ThornTree Capital Partners LP Hedge Fund•Long/Short	Mark Christopher Moore CIO	7.56% $49.4M	0.24% 339.1K shares	Q3 2024 Held for 1y 2m	$653.4M
A Anatole Investment Management Ltd Institution	-	7.43% $76.3M	0.37% 523.7K shares	Q3 2025 Held for 2 months	$1.0B
A Analog Century Management LP Hedge Fund•Long/Short	Val Zlatev Founder	5.61% $104.6M	0.51% 717.7K shares	Q4 2020 Held for 4y 11m	$1.9B
Atreides Management, LP Hedge Fund•Long/Short	Gavin Seth Baker CIO	5.30% $204.0M	0.99% 1.4M shares	Q3 2023 Held for 2y 2m	$3.8B
I Ion Asset Management Ltd. Institution	-	4.37% $30.9M	0.15% 211.9K shares	Q2 2019 Held for 6y 5m	$707.1M
TITAN GLOBAL CAPITAL MANAGEMENT USA LLC RIA/Wealth	Clayton Gardner CEO	4.33% $29.4M	0.14% 202.0K shares	Q1 2025 Held for 8 months	$679.3M
12th Street Asset Management Company, LLC Hedge Fund•Value	Michael Gerard Okeefe Member	4.29% $26.9M	0.13% 185.0K shares	Q3 2024 Held for 1y 2m	$628.0M
A Amitell Capital Pte Ltd Institution	-	4.19% $5.7M	0.03% 38.9K shares	Q2 2025 Held for 5 months	$135.2M

Hedge Fund Spotlight

Discover hedge funds investing in CIEN

RIMA SENVEST MANAGEMENT, L.L.C.

Hedge Fund • Multi-Strategy

Portfolio ManagerRichard Ron Mashaal

Portfolio Value: $3.1B
Positions: 51
Last Reported: Q3 2025

Sector Allocation

Position in Ciena

Market Value: $126.3M
Shares Held: 867.3K
Portfolio Weight: 4.06%
Owned Since: 2020-Q4

Top Holding	Sector	Market Value	Weight
1 Wix.com WIX	Software - Infrastructure Technology	$442.1M	14.20%
2 Tower Semiconductor TSEM	Semiconductors Technology	$405.0M	13.01%
3 EPAM Systems EPAM	Information Technology Services Technology	$146.0M	4.69%