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ALLIANCEBERNSTEIN L.P.

Position in CIEN — Ciena Corp

CIK 1109448 NASHVILLE, TN

Position in CIEN

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$204,756,772
+$121,131,877 QoQ
Shares Held
527,411
+47.5% QoQ
Ownership
0.373%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 87.62255622275606.ToString("F0")% Shared 0.ToString("F0")% None 12.377443777243933.ToString("F0")%

Common Shares in CIEN Over Time

Shares Held

Position Value (USD)

Position in Communication Equipment

Technology · as of Mar 31, 2026

ALLIANCEBERNSTEIN L.P. holds $2,914,828,143 across 23 Communication Equipment names. CIEN ranks #3 (7.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 CIEN
Ciena Corp
This page
527,411 $204,756,772

All Filings in CIEN

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $204,756,772 527,411
2025-12-31 $83,624,895 357,570
2025-09-30 $37,009,939 254,067
2025-06-30 $28,192,556 346,644
2025-03-31 $26,076,572 431,517
2024-12-31 $37,599,071 443,333
2024-09-30 $26,930,473 437,254
2024-06-30 $19,527,691 405,307
2024-03-31 $12,087,310 244,435
2023-12-31 $12,073,032 268,230
2023-09-30 $121,611,889 2,573,252
2023-06-30 $116,721,304 2,747,030
2023-03-31 $226,360,097 4,309,979
2022-12-31 $177,199,852 3,475,870
2022-09-30 $178,372,753 4,411,891
2022-06-30 $224,497,959 4,912,428
2022-03-31 $318,524,373 5,253,577
2021-12-31 $390,113,978 5,068,390
2021-09-30 $187,867,415 3,658,567
2021-06-30 $186,419,313 3,276,838
2021-03-31 $139,954,170 2,557,642
2020-12-31 $138,712,646 2,624,648
2020-09-30 $134,668,844 3,393,017
2020-06-30 $191,726,724 3,540,006
2020-03-31 $169,427,100 4,255,893