PRICE T ROWE ASSOCIATES INC /MD/

Position in CIEN — Ciena Corp

CIK 80255 BALTIMORE, MD

Position in CIEN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$2,035,413,019

+$1,087,859,481 QoQ

Shares Held

5,242,802

+29.4% QoQ

Ownership

3.70%

of shares outstanding

% of Portfolio

0.25%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 94.01993437860136.ToString("F0")% Shared 0.ToString("F0")% None 5.980065621398634.ToString("F0")%

Technology · as of Mar 31, 2026

PRICE T ROWE ASSOCIATES INC /MD/ holds $8,010,904,206 across 24 Communication Equipment names. CIEN ranks #2 (25.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CSCO	Cisco Systems, Inc.	44,049,010	$3,417,762,685
2	CIEN	Ciena Corp This page	5,242,802	$2,035,413,019
3	LITE	Lumentum Holdings Inc.	1,309,909	$920,551,648
4	BDC	Belden Inc.	3,517,081	$403,866,411
5	MSI	Motorola Solutions, Inc.	919,276	$398,938,204
6	VIAV	Viavi Solutions Inc.	10,186,729	$339,014,340
7	AAOI	Applied Optoelectronics, Inc.	1,732,381	$146,542,108
8	VSAT	Viasat Inc	3,185,626	$145,901,670

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,035,413,019	5,242,802	+29.4%	Shares	Defined	2026-05-15
2025-12-31	$947,553,538	4,051,625	+53.0%	Shares	Sole	2026-02-17
2025-09-30	$385,660,305	2,647,493	+909.6%	Shares	Sole	2025-11-14
2025-06-30	$21,326,596	262,223	-77.6%	Shares	Sole	2025-08-14
2025-03-31	$70,700,017	1,169,949	-74.7%	Shares	Sole	2025-05-14
2024-12-31	$392,344,035	4,626,153	+195.9%	Shares	Sole	2025-02-14
2024-09-30	$96,281,799	1,563,270	+19.5%	Shares	Sole	2024-11-14
2024-06-30	$63,006,238	1,307,726	-36.6%	Shares	Defined	2024-08-14
2024-03-31	$101,985,383	2,062,394	+1944.4%	Shares	Sole	2024-05-15
2023-12-31	$4,540,653	100,881	+5.3%	Shares	Defined	2024-02-16
2023-09-30	$4,526,468	95,778	+5.8%	Shares	Defined	2023-11-14
2023-06-30	$3,847,809	90,558	-12.4%	Shares	Defined	2023-08-14
2023-03-31	$5,427,994	103,351	+2.7%	Shares	Defined	2023-05-15
2022-12-31	$5,129,862	100,625	-17.9%	Shares	Defined	2023-02-14
2022-09-30	$4,955,990	122,582	+0.5%	Shares	Sole	2022-11-14
2022-06-30	$5,576,131	122,016	+7.9%	Shares	Sole	2022-08-15
2022-03-31	$6,857,434	113,103	+3.4%	Shares	Sole	2022-05-16
2021-12-31	$8,415,976	109,341	+24.2%	Shares	Sole	2022-02-14
2021-09-30	$4,521,162	88,046	-1.2%	Shares	Sole	2021-11-15
2021-06-30	$5,068,386	89,091	-3.2%	Shares	Sole	2021-08-16
2021-03-31	$5,034,951	92,013	+10.0%	Shares	Sole	2021-05-17
2020-12-31	$4,418,999	83,614	-8.7%	Shares	Sole	2021-02-16
2020-09-30	$3,634,254	91,566	+2.0%	Shares	Sole	2020-11-16
2020-06-30	$4,861,130	89,755	+1.2%	Shares	Sole	2020-08-14
2020-03-31	$3,530,111	88,674	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.