Robeco Institutional Asset Management B.V.

Position in CIEN — Ciena Corp

CIK 1418773 ROTTERDAM, P7

Position in CIEN

as of Mar 31, 2026 · filed Apr 21, 2026 Compact

Position Value

$104,023,510

+$91,821,811 QoQ

Shares Held

267,943

+413.6% QoQ

Ownership

0.189%

of shares outstanding

% of Portfolio

0.15%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

11 quarters on record

Voting authority Sole 62% Shared 0% None 38%

Technology · as of Mar 31, 2026

Robeco Institutional Asset Management B.V. holds $750,503,891 across 9 Communication Equipment names. CIEN ranks #2 (13.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CSCO	Cisco Systems, Inc.	6,415,886	$497,808,594
2	CIEN	Ciena Corp This page	267,943	$104,023,510
3	MSI	Motorola Solutions, Inc.	155,708	$67,572,600
4	ZBRA	Zebra Technologies Corp	230,743	$48,243,746
5	HPE	Hewlett Packard Enterprise Co	839,223	$19,981,899
6	LITE	Lumentum Holdings Inc.	8,748	$6,147,744
7	NTGR	Netgear, Inc.	234,729	$5,126,481
8	VIAV	Viavi Solutions Inc.	36,778	$1,223,971

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$104,023,510	267,943	+413.6%	Shares	Defined	2026-04-21
2025-12-31	$12,201,699	52,173	+3411.0%	Shares	Defined	2026-01-23
2025-09-30	$216,465	1,486	-96.5%	Shares	Defined	2025-10-22
2025-06-30	$3,440,015	42,297	0.0%	Shares	Defined	2025-07-18
2025-03-31	$2,556,007	42,297	0.0%	Shares	Defined	2025-04-23
2024-12-31	$3,587,208	42,297	0.0%	Shares	Defined	2025-01-23
2024-09-30	$2,605,072	42,297	0.0%	Shares	Defined	2024-10-29
2024-06-30	$2,037,869	42,297	-78.1%	Shares	Defined	2024-07-23
2020-09-30	$7,668,108	193,200	+8.7%	Shares	Defined	2021-01-19
2020-06-30	$9,624,123	177,698	-31.2%	Shares	Defined	2021-01-19
2020-03-31	$10,283,520	258,315	—	Shares	Defined	2021-01-19
No filing history on record for this holder in this stock.