Which hedge funds own CIEN? CIENA CORP, Q2 2026 13F holders

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101 tracked hedge funds disclosed a position in CIEN (CIENA CORP) in their Q2 2026 13F filings, worth $4.0bn in total. The largest holder by portfolio weight is ThornTree Capital Partners LP at 8.7% of its book. 43 opened a new position this quarter: Riposte Capital LLC, Shannon River Fund Management LLC, Sunstone Asset Management, LP, Tairen Capital Ltd. 22 exited: Kultura Capital Management LP, CloudAlpha Capital Management Limited/Hong Kong, Lone Pine Capital LLC.

101
Holders: 43
New this quarter: 22
Exited this quarter: $520m
Inflow, new holders: $861m
Outflow, exits: $4.0bn
Combined value: 8.2%
Share of managers holding

Holders, Q2 2026

101 rows


ThornTree Capital Partners LP Hedge fund	8.7%	$63.9m	130,272	0.0%	held
Riposte Capital LLC Hedge fund	6.7%	$19.6m	40,000	–	new
Analog Century Management LP Hedge fund	4.1%	$111m	226,198	−8.6%	reduced
Shannon River Fund Management LLC Hedge fund	3.6%	$39.9m	81,298	–	new
Atreides Management, LP Hedge fund	3.0%	$338m	688,521	+1.7%	added
FengHe Fund Management Pte. Ltd. Hedge fund	2.4%	$25.3m	51,667	−42%	reduced
Atika Capital Management LLC Hedge fund	2.4%	$23.9m	48,768	+12%	added
Jericho Capital Asset Management L.P. Hedge fund	2.3%	$275m	561,513	−66%	reduced
Teza Capital Management LLC Hedge fund	2.2%	$1.2m	2,367	+68%	added
Senvest Management, LLC Hedge fund	1.9%	$64.0m	130,426	−25%	reduced
Sunstone Asset Management, LP Hedge fund	1.6%	$1.5m	3,040	–	new
Tairen Capital Ltd Hedge fund	1.5%	$17.0m	34,720	–	new
CenterStar Asset Management, LLC Hedge fund	1.5%	$1.9m	3,890	−33%	reduced
Caxton Associates LLP Hedge fund	1.1%	$57.8m	117,924	–	new
Patton Fund Management, Inc. Hedge fund	1.0%	$4.6m	9,290	−30%	reduced
Avanda Investment Management Pte. Ltd. Hedge fund	0.8%	$589k	1,200	–	new
Rokos Capital Management LLP Hedge fund	0.8%	$62.3m	127,045	+91%	added
Ares Systematic Credit Ltd Hedge fund	0.8%	$1.3m	2,567	–	new
Scge Management, L.P. Hedge fund	0.7%	$43.7m	89,000	–	new
ABS Investment Management LLC Hedge fund	0.7%	$1.1m	981	–
Hel Ved Capital Management Ltd Hedge fund	0.6%	$4.1m	8,380	−87%	reduced
Entropy Technologies, LP Hedge fund	0.6%	$14.1m	28,706	–	new
Pinnbrook Capital Management LP Hedge fund	0.5%	$2.9m	5,920	+187%	added
Maytree Asset Management Ltd Hedge fund	0.5%	$707k	1,441	–	new
Twin Tree Management, LP Hedge fund	0.5%	$2.9m	5,995	+31%	added
Arrowstreet Capital, Limited Partnership Hedge fund	0.4%	$823m	1.68m	+21%	added
Boothbay Fund Management, LLC Hedge fund	0.4%	$19.1m	38,948	+2.5%	added
Jupiter Asset Management Ltd Hedge fund	0.3%	$69.6m	141,910	+756%	added
Balyasny Asset Management L.P. Hedge fund	0.3%	$183m	372,449	+15%	added
HighVista Strategies LLC Hedge fund	0.3%	$1.4m	2,925	−45%	reduced
Alyeska Investment Group, L.P. Hedge fund	0.3%	$108m	220,966	–	new
Sandler Capital Management Hedge fund	0.3%	$472k	962	–	new
Credit Capital Investments LLC Hedge fund	0.3%	$466k	950	–	new
Y-Intercept (Hong Kong) Ltd Hedge fund	0.3%	$13.0m	26,452	–	new
Oak Thistle LLC Hedge fund	0.2%	$2.6m	5,247	−59%	reduced
Freestone Grove Partners LP Hedge fund	0.2%	$37.3m	76,121	−43%	reduced
GMT Capital Corp Hedge fund	0.2%	$4.6m	9,410	0.0%	held
Anatole Investment Management Ltd Hedge fund	0.2%	$1.4m	2,782	−99%	reduced
Quantitative Investment Management, LLC Hedge fund	0.2%	$2.1m	4,325	–	new
Jain Global LLC Hedge fund	0.2%	$18.3m	37,397	–	new
Occudo Quantitative Strategies LP Hedge fund	0.2%	$4.0m	8,133	+29%	added
Walleye Capital LLC Hedge fund	0.2%	$43.8m	89,241	+54%	added
Bridgewater Associates, LP Hedge fund	0.2%	$49.6m	101,038	−30%	reduced
AlphaGrep UK Ltd Hedge fund	0.2%	$657k	1,339	–	new
Capital Fund Management S.A. Hedge fund	0.2%	$25.3m	51,538	+195%	added
AQR Capital Management LLC Hedge fund	0.2%	$507m	1.05m	+7.7%	added
Oxford Asset Management LLP Hedge fund	0.2%	$359k	732	–	new
Summit Partners Public Asset Management, LLC Hedge fund	0.2%	$6.5m	13,348	–	new
Stevens Capital Management LP Hedge fund	0.2%	$708k	1,443	–	new
Squarepoint Ops LLC Hedge fund	0.2%	$82.1m	167,285	+4368%	added
Point72 Asset Management, L.P. Hedge fund	0.2%	$103m	210,516	−61%	reduced
Qube Research & Technologies Ltd Hedge fund	0.2%	$139m	282,869	–	new
Bayforest Capital Ltd Hedge fund	0.2%	$166k	339	–	new
Lecap Asset Management Ltd Hedge fund	0.1%	$338k	690	−67%	reduced
Renaissance Technologies LLC Hedge fund	0.1%	$90.6m	184,774	+89%	added
Diametric Capital, LP Hedge fund	0.1%	$1.1m	2,284	–	new
Fulcrum Asset Management LLP Hedge fund	0.1%	$1.2m	2,418	–	new
Concentric Capital Strategies, LP Hedge fund	0.1%	$1.8m	3,686	–	new
SummitTX Capital, L.P. Hedge fund	0.1%	$4.2m	8,479	+68%	added
IFM Investors Pty Ltd Hedge fund	0.1%	$16.3m	33,302	+6.1%	added
FNY Investment Advisers, LLC Hedge fund	0.1%	$294k	600	–	new
Greenland Capital Management LP Hedge fund	0.1%	$559k	1,139	−62%	reduced
Brevan Howard Capital Management LP Hedge fund	0.1%	$7.4m	15,174	+17%	added
Laurion Capital Management LP Hedge fund	0.10%	$1.4m	2,763	–	new
J. Goldman & Co LP Hedge fund	0.09%	$2.6m	5,249	–	new
Engineers Gate Manager LP Hedge fund	0.09%	$6.7m	13,642	+113%	added
Adage Capital Partners GP, L.L.C. Hedge fund	0.09%	$61.8m	126,000	+8.4%	added
Science & Technology Partners, L.P. Hedge fund	0.08%	$496k	1,012	−96%	reduced
Fox Run Management, L.L.C. Hedge fund	0.08%	$499k	1,018	–	new
Discovery Capital Management, LLC Hedge fund	0.08%	$2.0m	4,009	–	new
Candriam S.C.A. Hedge fund	0.08%	$16.9m	34,468	+206%	added
CenterBook Partners LP Hedge fund	0.08%	$1.5m	3,129	–	new
Prelude Capital Management, LLC Hedge fund	0.07%	$1.0m	2,068	−63%	reduced
Gsa Capital Partners LLP Hedge fund	0.07%	$1.1m	2,226	+196%	added
Quantbot Technologies LP Hedge fund	0.06%	$1.6m	3,268	−56%	reduced
Citadel Advisors LLC Hedge fund	0.06%	$105m	214,064	+52%	added
Millennium Management LLC Hedge fund	0.06%	$81.6m	166,420	+83%	added
Quarry LP Hedge fund	0.05%	$348k	709	−41%	reduced
Voloridge Investment Management, LLC Hedge fund	0.05%	$11.9m	24,300	–	new
Trust Asset Management LLC Hedge fund	0.05%	$768k	1,565	–	new
Woodline Partners LP Hedge fund	0.05%	$15.1m	30,862	+12%	added
First Manhattan Long-only investor	0.04%	$15.9m	32,396	−4.2%	reduced
D. E. Shaw & Co., Inc. Hedge fund	0.04%	$65.3m	133,195	+1395%	added
Hillsdale Investment Management Inc. Hedge fund	0.03%	$1.5m	3,100	–	new
Mirabella Financial Services LLP Hedge fund	0.03%	$317k	646	−92%	reduced
QVT Financial LP Hedge fund	0.03%	$432k	880	–	new
Numerai GP LLC Hedge fund	0.02%	$282k	574	−75%	reduced
Schonfeld Strategic Advisors LLC Hedge fund	0.02%	$4.1m	8,311	–	new
Alphadyne Asset Management LP Hedge fund	0.02%	$419k	855	–	new
Marshall Wace, LLP Hedge fund	0.02%	$22.1m	45,101	−64%	reduced
BTG Pactual Asset Management US LLC Hedge fund	0.02%	$226k	461	–	new
Weiss Asset Management LP Hedge fund	0.01%	$1.2m	2,481	–	new
Voleon Capital Management LP Hedge fund	0.01%	$665k	1,355	−2.7%	reduced
Persistent Asset Partners Ltd Hedge fund	0.01%	$30.9k	63	−99%	reduced
CVA Family Office, LLC Family office	0.01%	$93.2k	190	+21%	added
Lighthouse Investment Partners, LLC Hedge fund	0.01%	$267k	544	–	new
Two Sigma Investments, LP Hedge fund	0.0%	$4.7m	9,500	+173%	added
Magnetar Financial LLC Hedge fund	0.0%	$377k	769	–	new
Graham Capital Management, L.P. Hedge fund	0.0%	$98.6k	201	–	new
Hudson Bay Capital Management LP Hedge fund	0.0%	$451k	920	–	new
Verition Fund Management LLC Hedge fund	0.0%	$219k	446	−99%	reduced

Exited since the previous filing

22 rows


Kultura Capital Management LP	4.4%	$4.8m
CloudAlpha Capital Management Limited/Hong Kong	3.8%	$34.2m
Lone Pine Capital LLC	2.5%	$314m
Ardmore Road Asset Management LP	2.3%	$35.3m
Lotus Technology Management, LP	1.7%	$455k
KP Management LLC	1.7%	$5.8m
ION Fund Management Ltd	1.6%	$10.7m
Polar Capital Holdings Plc	1.4%	$310m
Steadfast Capital Management LP	1.2%	$31.7m
Whale Rock Capital Management LLC	1.2%	$89.8m
Gallo Partners, LP	1.1%	$580k
Dymon Asia Capital (Singapore) Pte. Ltd.	0.8%	$3.6m
IQ EQ FUND MANAGEMENT (SINGAPORE) PRIVATE Ltd	0.4%	$233k
Armistice Capital, LLC	0.1%	$3.2m
Landscape Capital Management, L.L.C.	0.09%	$1.4m
Qsemble Capital Management, LP	0.08%	$1.1m
Sona Asset Management (US) LLC	0.06%	$1.6m
Holocene Advisors, LP	0.02%	$9.9m
Parallax Volatility Advisers, L.P.	0.02%	$461k
Aristeia Capital, L.L.C.	0.01%	$448k
Select Equity Group, L.P.	0.01%	$1.0m
Tudor Investment Corp ET AL	0.0%	$464k

Who discovered CIEN first? Beta

The run: Q1 2025 → Q2 2026, +712%

Weight in book of

18 rows


ThornTree Capital Partners LP high conviction	Bought before the run	Q3 2024	7.7%	5.8%	9.0%	+137%	+696%	+18.0 pts	Held at last filing, Q2 2026
Atreides Management, LP high conviction	Bought before the run	Q2 2025	2.9%	0.2%	7.1%	+503%	+503%	+15.3 pts	Held at last filing, Q2 2026
Analog Century Management LP high conviction	Bought before the run	Q3 2024	3.2%	4.1%	5.6%	+137%	+696%	+12.9 pts	Held at last filing, Q2 2026
Foursixthree Capital LP high conviction	Bought before the run	Q2 2025	10.7%	–	10.7%	+503%	+79%	+8.5 pts	Exited by Q4 2025
Jericho Capital Asset Management L.P. high conviction	Bought before the run	Q2 2025	1.4%	–	9.5%	+503%	+503%	+8.4 pts	Held at last filing, Q2 2026
Rokos Capital Management LLP	Bought before the run	Q1 2024	1.9%	0.3%	2.5%	+22%	+892%	+2.9 pts	Held at last filing, Q2 2026
Westerly Capital Management, LLC	Bought before the run	Q1 2024	3.0%	3.6%	3.8%	+22%	+64%	+2.3 pts	Exited by Q3 2025
Polar Capital Holdings Plc	Bought before the run	Q4 2024	1.0%	0.5%	1.4%	+176%	+358%	+1.9 pts	Exited by Q2 2026
Andar Capital Management HK Ltd high conviction	Bought before the run	Q1 2025	5.6%	5.6%	5.6%	+542%	+35%	+1.9 pts	Exited by Q3 2025
Talos Eurisko Asset Management LP high conviction	Bought before the run	Q1 2025	7.6%	7.6%	7.6%	+542%	+287%	+1.2 pts	Exited by Q1 2026
Ardsley Advisory Partners LP	Bought before the run	Q1 2025	1.4%	1.4%	1.5%	+542%	+35%	+0.3 pts	Exited by Q3 2025
Manchester Global Management (UK) Ltd	Bought before the run	Q3 2024	1.5%	1.2%	3.0%	+137%	−1.9%	−0.3 pts	Exited by Q2 2025
First Sabrepoint Capital Management LP	Bought before the run	Q4 2024	2.7%	1.0%	2.7%	+176%	−29%	−0.8 pts	Exited by Q2 2025
Oribel Capital Management, LP	Bought before the run	Q1 2025	3.1%	3.1%	3.1%	+542%	+141%	–	Exited by Q4 2025
SG Capital Management LLC	Bought before the run	Q2 2025	2.8%	–	2.8%	+503%	–	–	Exited by Q3 2025
Apis Capital Advisors, LLC	Bought before the run	Q1 2025	2.0%	2.0%	2.0%	+542%	–	–	Exited by Q2 2025
TradeLink Capital LLC	Bought before the run	Q2 2025	2.0%	–	2.0%	+503%	–	–	Exited by Q3 2025
Maytus Capital Management, LLC	Bought before the run	Q2 2025	1.5%	–	1.8%	+503%	+188%	–	Exited by Q1 2026

Split-adjusted quarter-end prices, excluding dividends. They describe the stock while each manager held it, not the return it earned.

Which hedge funds own CIEN? CIENA CORP, Q2 2026 13F holders

Holders, Q2 2026

Exited since the previous filing

Ownership over time

Who discovered CIEN first? Beta