Stocks
CIEN
WELLINGTON MANAGEMENT GROUP LLP

WELLINGTON MANAGEMENT GROUP LLP

CIK

902219

City

Boston

State / Country

MA

Stock

CIEN — Ciena Corp

Top Portfolio Positions

1,684 positions · $526,567,851,293 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio	Open
NVDA	Nvidia Corp Technology	133,857,990	$23,344,833,450	4.43%
MSFT	Microsoft Corp Technology	52,742,167	$19,523,567,954	3.71%
AAPL	Apple Inc. Technology	65,033,441	$16,504,836,987	3.13%
AVGO	Broadcom Inc. Technology	49,687,982	$15,378,927,305	2.92%
GOOGL	Alphabet Inc. Communication Services	47,620,485	$13,693,746,664	2.60%
AMZN	Amazon Com Inc Consumer Cyclical	62,407,139	$12,997,534,834	2.47%
LLY	ELI LILLY & Co Healthcare	13,427,061	$12,349,807,890	2.35%
MRK	Merck & Co., Inc. Healthcare	84,314,971	$10,142,247,857	1.93%
META	Meta Platforms, Inc. Communication Services	11,690,324	$6,688,385,065	1.27%
MA	Mastercard Inc Financial Services	13,001,582	$6,496,370,458	1.23%

Portfolio Trend

52 quarters · across all stocks

Holdings in CIEN

Compact Export CSV

Shares Held

Position Value (USD)

13 of 13 shown

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$56,051,482	144,377	+34.3%	Shares	Defined	2026-05-15
2025-12-31	$25,138,216	107,488	+374.3%	Shares	Defined	2026-02-17
2023-06-30	$962,865	22,661	-9.9%	Shares	Defined	2023-08-14
2023-03-31	$1,320,510	25,143	+182.3%	Shares	Defined	2023-05-12
2022-12-31	$454,129	8,908	-99.5%	Shares	Defined	2023-02-13
2021-12-31	$141,516,039	1,838,587	-37.9%	Shares	Defined	2022-02-11
2021-09-30	$152,124,579	2,962,504	-0.8%	Shares	Defined	2021-11-15
2021-06-30	$169,931,793	2,987,024	-6.7%	Shares	Defined	2021-08-16
2021-03-31	$175,101,098	3,199,947	-3.9%	Shares	Defined	2021-05-17
2020-12-31	$175,942,035	3,329,083	+12.7%	Shares	Defined	2021-02-12
2020-09-30	$117,205,045	2,953,012	+8.6%	Shares	Defined	2020-11-16
2020-06-30	$147,265,588	2,719,084	-17.9%	Shares	Defined	2020-08-14
2020-03-31	$131,792,436	3,310,536	—	Shares	Defined	2020-05-14
No quarters match your search.