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FMR LLC

Position in CIEN — Ciena Corp

CIK 315066 BOSTON, MA

Position in CIEN

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$8,234,263,570
+$3,293,009,100 QoQ
Shares Held
21,209,756
+0.4% QoQ
Ownership
15.0%
of shares outstanding
% of Portfolio
0.47%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 99.94682635670114.ToString("F0")% Shared 0.ToString("F0")% None 0.0531736432988668.ToString("F0")%

Common Shares in CIEN Over Time

Shares Held

Position Value (USD)

Position in Communication Equipment

Technology · as of Mar 31, 2026

FMR LLC holds $23,027,492,256 across 28 Communication Equipment names. CIEN ranks #1 (35.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CIEN
Ciena Corp
This page
21,209,756 $8,234,263,570

All Filings in CIEN

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $8,234,263,570 21,209,756
2025-12-31 $4,941,254,470 21,128,210
2025-09-30 $3,082,142,086 21,158,386
2025-06-30 $1,726,849,796 21,232,630
2025-03-31 $1,287,945,977 21,313,023
2024-12-31 $1,826,361,805 21,534,746
2024-09-30 $1,334,289,822 21,664,066
2024-06-30 $1,038,551,648 21,555,659
2024-03-31 $946,289,439 19,136,288
2023-12-31 $509,407,649 11,317,655
2023-09-30 $422,534,644 8,940,640
2023-06-30 $364,122,260 8,569,599
2023-03-31 $462,114,655 8,798,832
2022-12-31 $454,264,120 8,910,634
2022-09-30 $348,137,916 8,610,881
2022-06-30 $393,207,367 8,604,100
2022-03-31 $534,600,780 8,817,430
2021-12-31 $684,094,503 8,887,807
2021-09-30 $369,039,661 7,186,751
2021-06-30 $361,867,559 6,360,829
2021-03-31 $270,460,439 4,942,625
2020-12-31 $264,596,748 5,006,561
2020-09-30 $268,574,528 6,766,806
2020-06-30 $334,846,906 6,182,550
2020-03-31 $62,368,494 1,566,654