BlackRock, Inc.

Position in CIEN — Ciena Corp

CIK 2012383 New York, NY

Position in CIEN

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$5,192,105,315

+$1,293,766,052 QoQ

Shares Held

13,373,787

-19.8% QoQ

Ownership

9.45%

of shares outstanding

% of Portfolio

0.10%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2024

7 quarters on record

Voting authority Sole 93.11635515056432.ToString("F0")% Shared 0.ToString("F0")% None 6.883644849435691.ToString("F0")%

Technology · as of Mar 31, 2026

BlackRock, Inc. holds $56,761,274,520 across 37 Communication Equipment names. CIEN ranks #4 (9.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CSCO	Cisco Systems, Inc.	365,059,875	$28,324,995,688
2	MSI	Motorola Solutions, Inc.	16,444,836	$7,136,565,469
3	LITE	Lumentum Holdings Inc.	7,836,978	$5,507,514,649
4	CIEN	Ciena Corp This page	13,373,787	$5,192,105,315
5	HPE	Hewlett Packard Enterprise Co	143,871,063	$3,425,569,997
6	ASTS	AST SpaceMobile, Inc.	14,517,234	$1,203,043,171
7	VIAV	Viavi Solutions Inc.	35,237,607	$1,172,707,552
8	VSAT	Viasat Inc	20,579,326	$942,533,125

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$5,192,105,315	13,373,787	-19.8%	Shares	Sole	2026-05-13
2025-12-31	$3,898,339,263	16,668,830	+6.9%	Shares	Sole	2026-02-12
2025-09-30	$2,271,885,481	15,596,111	-8.6%	Shares	Sole	2025-11-12
2025-06-30	$1,388,075,201	17,067,198	+0.2%	Shares	Sole	2025-08-12
2025-03-31	$1,029,684,951	17,039,301	-0.4%	Shares	Sole	2025-05-02
2024-12-31	$1,450,390,079	17,101,640	+5.9%	Shares	Sole	2025-02-07
2024-09-30	$994,777,651	16,151,610	—	Shares	Sole	2024-11-13
No filing history on record for this holder in this stock.