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SIMPLEX TRADING, LLC

Position in CIEN — Ciena Corp

CIK 1488542 CHICAGO, IL

Position in CIEN

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$2,286,990
+$220,515 QoQ
Shares Held
4,662
-47.2% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#487
of 1,218 holders
Holding Since
Jun 2020
14 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CIEN Over Time

Shares Held

Position Value (USD)

Position in Communication Equipment

Technology · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $48,224,171 across 24 Communication Equipment names. CIEN ranks #4 (4.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 CIEN
Ciena Corp
This page
4,662 $2,286,990

All Filings in CIEN

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14 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,286,990 4,662
2025-12-31 $2,066,475 8,836
2024-12-31 $2,171,136 25,600
2024-09-30 $3,889,839 63,157
2024-06-30 $2,584,134 53,635
2024-03-31 $972,187 19,660
2022-09-30 $1,127,956 27,899
2022-03-31 $881,560 14,540
2021-12-31 $1,083,275 14,074
2021-09-30 $28,139 548
2021-06-30 $31,175 548
2021-03-31 $365,584 6,681
2020-09-30 $123,793 3,119
2020-06-30 $85,031 1,570