CIENA CORP (CIEN) research

CIENA CORP
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Sector
Information Technology
Industry
Communications Equipment
Last price
$341.29
As of
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You are seeing 5 of 152 signals recorded on CIEN since 2026-04-27.

The five above all landed on 2026-09-06. The other 147 were recorded on 9 other days. 137 of the 152 are institutional flow rows, which arrive in batches on filing days.

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Largest reported share positions in CIEN (2026Q2)

Manager / securityMarket value% portfolioQoQ
CITADEL ADVISORS LLCCUSIP 171779309 · 2026Q2$105M0.01%,
Point72 Asset Management, L.P.CUSIP 171779309 · 2026Q2$103.3M0.11%,
RENAISSANCE TECHNOLOGIES LLCCUSIP 171779309 · 2026Q2$90.6M0.12%,
MILLENNIUM MANAGEMENT LLCCUSIP 171779309 · 2026Q2$81.6M0.03%,
D. E. Shaw & Co., Inc.CUSIP 171779309 · 2026Q2$65.3M0.03%,
Bridgewater Associates, LPCUSIP 171779309 · 2026Q2$49.6M0.20%,
TWO SIGMA INVESTMENTS, LPCUSIP 171779309 · 2026Q2$4.7M0.00%,

Quarterly SEC Form 13F disclosures from the managers Kresmion tracks, not a complete ownership ranking. Non-option holdings only; reported put and call positions are excluded. Different securities are labeled by CUSIP. Values are reporting-period snapshots, not current position values. Filings can arrive up to 45 days after quarter-end.

Recent SEC filings, CIEN

Kresmion Research Notes on CIEN

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