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SEI INVESTMENTS CO

Position in CIEN — Ciena Corp

CIK 350894 OAKS, PA

Position in CIEN

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$56,205,220
-$2,120,787 QoQ
Shares Held
144,773
-42.0% QoQ
Ownership
0.102%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in CIEN Over Time

Shares Held

Position Value (USD)

Position in Communication Equipment

Technology · as of Mar 31, 2026

SEI INVESTMENTS CO holds $754,570,818 across 28 Communication Equipment names. CIEN ranks #5 (7.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 CIEN
Ciena Corp
This page
144,773 $56,205,220

All Filings in CIEN

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $56,205,220 144,773
2025-12-31 $58,326,007 249,395
2025-09-30 $45,154,348 309,977
2025-06-30 $17,144,851 210,806
2025-03-31 $15,072,510 249,421
2024-12-31 $13,316,356 157,014
2024-09-30 $11,149,021 181,020
2024-06-30 $9,577,219 198,780
2024-03-31 $8,313,434 168,118
2023-12-31 $7,645,173 169,855
2023-09-30 $9,206,436 194,804
2023-06-30 $9,422,581 221,760
2023-03-31 $12,822,337 244,142
2022-12-31 $10,598,792 207,901
2022-09-30 $7,842,489 193,977
2022-06-30 $8,430,735 184,480
2022-03-31 $10,426,297 171,966
2021-12-31 $12,764,627 165,839
2021-09-30 $8,186,781 159,431
2021-06-30 $9,102,001 159,993
2021-03-31 $9,087,568 166,074
2020-12-31 $7,397,465 139,971
2020-09-30 $5,006,535 126,141
2020-06-30 $15,702,282 289,924
2020-03-31 $9,457,939 237,577