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Livermore
Livermore
ZHEN

Citadel Advisors LLC

SEC CIK
0001423053
Latest filing
Sep 1, 2026

CECO holding history

Ceco Environmental Corp in every 13F filed by Citadel Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

CECO overviewAll 13F holders of CECOFull Q2 2026 holdings

Shares (Q2 2026)
160,872
Value
$14.6M
% of portfolio
<0.1%
Quarters held
19
Since Q1 2021
Holdings of CECO by Citadel Advisors LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026160,872$14.6M<0.1%−56,514−26.0%ReducedHolders
Q1 2026217,386$13.0M<0.1%+152,324+234.1%AddedHolders
Q4 202565,062$3.89M<0.1%−278,486−81.1%ReducedHolders
Q3 2025343,548$17.6M<0.1%+218,382+174.5%AddedHolders
Q2 2025125,166$3.54M<0.1%+114,406+1,063.3%AddedHolders
Q1 202510,760$245.3K<0.1%−22,314−67.5%ReducedHolders
Q4 202433,074$999.8K<0.1%+33,074NewHolders
Q3 20240$00.0%−2−100.0%Sold outHolders
Q2 20242$58<0.1%−59,503−100.0%ReducedHolders
Q1 202459,505$1.37M<0.1%−12,792−17.7%ReducedHolders
Q4 202372,297$1.47M<0.1%−77,831−51.8%ReducedHolders
Q3 2023150,128$2.40M<0.1%−145,697−49.3%ReducedHolders
Q2 2023295,825$3.95M<0.1%−326,593−52.5%ReducedHolders
Q1 2023622,418$8.71M<0.1%+434,968+232.0%AddedHolders
Q4 2022187,450$2.19M<0.1%+35,041+23.0%AddedHolders
Q3 2022152,409$1.35M<0.1%+67,737+80.0%AddedHolders
Q2 202284,672$507.0K<0.1%+84,672NewHolders
Q1 20220$00.0%−10,827−100.0%Sold outHolders
Q4 202110,827$68.0K<0.1%+10,827NewHolders
Q3 20210$00.0%−53,785−100.0%Sold outHolders
Q2 202153,785$385.0K<0.1%−3,189−5.6%ReducedHolders
Q1 202156,974$452.0K<0.1%––Holders

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