CenterBook Partners LP

Position in CIEN — Ciena Corp

CIK 1872738 GREENWICH, CT

Position in CIEN

as of Jun 30, 2026 · filed Aug 11, 2026 Compact

Position Value

$1,534,962

+$356,443 QoQ

Shares Held

3,129

-77.5% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

#551

of 1,218 holders

Holding Since

Dec 2021

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

CenterBook Partners LP holds $47,226,787 across 10 Communication Equipment names. CIEN ranks #8 (3.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LITE	Lumentum Holdings Inc.	25,152	$21,581,925
2	CSCO	Cisco Systems, Inc.	52,707	$6,190,964
3	BKTI	BK Technologies Corp	58,592	$5,037,740
4	TSAT	Telesat Corp	71,500	$3,619,330
5	EXTR	Extreme Networks Inc	101,937	$3,299,700
6	NTGR	Netgear, Inc.	117,686	$2,747,968
7	HPE	Hewlett Packard Enterprise Co	58,907	$2,657,294
8	CIEN	Ciena Corp This page	3,129	$1,534,962

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,534,962	3,129	-77.5%	Shares	Sole	2026-08-11
2024-12-31	$1,178,519	13,896	-28.0%	Shares	Sole	2025-02-13
2024-09-30	$1,188,933	19,304	-82.0%	Shares	Sole	2024-11-14
2024-06-30	$5,161,041	107,120	-33.2%	Shares	Sole	2024-08-12
2024-03-31	$7,925,895	160,281	+41.1%	Shares	Sole	2024-05-10
2023-12-31	$5,113,406	113,606	+69.6%	Shares	Sole	2024-02-13
2023-09-30	$3,165,002	66,970	-40.0%	Shares	Sole	2023-11-13
2023-06-30	$4,738,739	111,526	+428.1%	Shares	Sole	2023-08-14
2023-03-31	$1,109,117	21,118	-37.9%	Shares	Sole	2023-05-15
2022-12-31	$1,734,339	34,020	-49.1%	Shares	Sole	2023-02-13
2022-09-30	$2,703,513	66,869	+34.2%	Shares	Sole	2022-11-14
2022-06-30	$2,276,911	49,823	+641.0%	Shares	Sole	2022-08-15
2021-12-31	$517,546	6,724	—	Shares	Sole	2022-02-11
No filing history on record for this holder in this stock.