Skip to main content
Livermore
Livermore
ZHEN

D. E. Shaw & Co., Inc.

SEC CIK
0001009207
Latest filing
Aug 14, 2026

AMSC holding history

American Superconductor Corp in every 13F filed by D. E. Shaw & Co., Inc., including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

AMSC overviewAll 13F holders of AMSCFull Q2 2026 holdings

Shares (Q2 2026)
366,845
Value
$15.2M
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of AMSC by D. E. Shaw & Co., Inc., by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026366,845$15.2M<0.1%−200,729−35.4%ReducedHolders
Q1 2026567,574$19.2M<0.1%+124,426+28.1%AddedHolders
Q4 2025443,148$12.8M<0.1%−309,555−41.1%ReducedHolders
Q3 2025752,703$44.7M<0.1%+619,059+463.2%AddedHolders
Q2 2025133,644$4.90M<0.1%+58,653+78.2%AddedHolders
Q1 202574,991$1.36M<0.1%−177,218−70.3%ReducedHolders
Q4 2024252,209$6.21M<0.1%−1,204−0.5%ReducedHolders
Q3 2024253,413$5.98M<0.1%−396,844−61.0%ReducedHolders
Q2 2024650,257$15.2M<0.1%+362,062+125.6%AddedHolders
Q1 2024288,195$3.89M<0.1%−147,549−33.9%ReducedHolders
Q4 2023435,744$4.85M<0.1%+61,616+16.5%AddedHolders
Q3 2023374,128$2.82M<0.1%+33,059+9.7%AddedHolders
Q2 2023341,069$2.14M<0.1%+2,999+0.9%AddedHolders
Q1 2023338,070$1.66M<0.1%−126,409−27.2%ReducedHolders
Q4 2022464,479$1.71M<0.1%−129,140−21.8%ReducedHolders
Q3 2022593,619$2.60M<0.1%−57,239−8.8%ReducedHolders
Q2 2022650,858$3.37M<0.1%+50,926+8.5%AddedHolders
Q1 2022599,932$4.57M<0.1%+7,542+1.3%AddedHolders
Q4 2021592,390$6.45M<0.1%+84,139+16.6%AddedHolders
Q3 2021508,251$7.41M<0.1%+96,874+23.5%AddedHolders
Q2 2021411,377$7.15M<0.1%+230,943+128.0%AddedHolders
Q1 2021180,434$3.42M<0.1%––Holders

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