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Livermore
Livermore
ZHEN

First Manhattan Co

SEC CIK
0000728083
Latest filing
Aug 14, 2026

CIEN holding history

Ciena Corp in every 13F filed by First Manhattan Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

CIEN overviewAll 13F holders of CIENFull Q2 2026 holdings

Shares (Q2 2026)
32,396
Value
$15.9M
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of CIEN by First Manhattan Co, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202632,396$15.9M<0.1%−1,423−4.2%ReducedHolders
Q1 202633,819$13.1M<0.1%−12,322−26.7%ReducedHolders
Q4 202546,141$10.8M<0.1%−1,200−2.5%ReducedHolders
Q3 202547,341$6.90M<0.1%−5,531−10.5%ReducedHolders
Q2 202552,872$4.30M<0.1%−6,955−11.6%ReducedHolders
Q1 202559,827$3.62M<0.1%−24,217−28.8%ReducedHolders
Q4 202484,044$7.13M<0.1%−900−1.1%ReducedHolders
Q3 202484,944$5.23M<0.1%−225−0.3%ReducedHolders
Q2 202485,169$4.10M<0.1%−50−0.1%ReducedHolders
Q1 202485,219$4.21M<0.1%−919−1.1%ReducedHolders
Q4 202386,138$3.88M<0.1%+7,073+8.9%AddedHolders
Q3 202379,065$3.74M<0.1%−1,389−1.7%ReducedHolders
Q2 202380,454$3.42M<0.1%−8,858−9.9%ReducedHolders
Q1 202389,312$4.69M<0.1%−5,971−6.3%ReducedHolders
Q4 202295,283$4.86M<0.1%−551−0.6%ReducedHolders
Q3 202295,834$3.87M<0.1%−800−0.8%ReducedHolders
Q2 202296,634$4.42M<0.1%00.0%UnchangedHolders
Q1 202296,634$5.86M<0.1%−1,021−1.0%ReducedHolders
Q4 202197,655$7.52M<0.1%−239−0.2%ReducedHolders
Q3 202197,894$5.03M<0.1%−980−1.0%ReducedHolders
Q2 202198,874$5.62M<0.1%−2,304−2.3%ReducedHolders
Q1 2021101,178$5.54M<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.