Yorktown Management & Research Co Inc

Position in CIEN — Ciena Corp

CIK 1313559 Forest, VA

Position in CIEN

as of Jun 30, 2026 · filed Jul 23, 2026 Compact

Position Value

$809,424

+$168,845 QoQ

Shares Held

1,650

0.0% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.53%

of 13F equity value

Holder Rank

#669

of 1,218 holders

Holding Since

Jun 2020

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

Yorktown Management & Research Co Inc holds $3,637,952 across 5 Communication Equipment names. CIEN ranks #3 (22.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	DGII	Digi International Inc	13,700	$1,026,815
2	LITE	Lumentum Holdings Inc.	1,125	$965,317
3	CIEN	Ciena Corp This page	1,650	$809,424
4	ONDS	Ondas Inc.	59,250	$488,220
5	AAOI	Applied Optoelectronics, Inc.	2,350	$348,176

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$809,424	1,650	0.0%	Shares	Sole	2026-07-23
2026-03-31	$640,579	1,650	0.0%	Shares	Sole	2026-04-20
2025-12-31	$385,885	1,650	-82.3%	Shares	Sole	2026-01-23
2022-06-30	$425,010	9,300	0.0%	Shares	Sole	2022-07-29
2022-03-31	$563,859	9,300	0.0%	Shares	Sole	2022-04-29
2021-12-31	$715,821	9,300	0.0%	Shares	Sole	2022-02-09
2021-09-30	$477,555	9,300	0.0%	Shares	Sole	2021-11-04
2021-06-30	$529,077	9,300	+57.6%	Shares	Sole	2021-08-03
2021-03-31	$322,848	5,900	0.0%	Shares	Sole	2021-05-11
2020-12-31	$311,815	5,900	0.0%	Shares	Sole	2021-02-11
2020-09-30	$234,171	5,900	0.0%	Shares	Sole	2020-11-06
2020-06-30	$319,544	5,900	—	Shares	Sole	2020-08-11
No filing history on record for this holder in this stock.