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Livermore
Livermore
ZHEN

D. E. Shaw & Co., Inc.

SEC CIK
0001009207
Latest filing
Aug 14, 2026

SIGA holding history

Siga Technologies Inc 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.

SIGA overviewAll 13F holders of SIGAFull Q2 2026 holdings

Shares (Q2 2026)
264,900
Value
$964.2K
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of SIGA by D. E. Shaw & Co., Inc., by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026264,900$964.2K<0.1%−191,485−42.0%ReducedHolders
Q1 2026456,385$2.44M<0.1%−98,186−17.7%ReducedHolders
Q4 2025554,571$3.39M<0.1%+54,818+11.0%AddedHolders
Q3 2025499,753$4.57M<0.1%+66,731+15.4%AddedHolders
Q2 2025433,022$2.82M<0.1%−114,833−21.0%ReducedHolders
Q1 2025547,855$3.00M<0.1%−44,805−7.6%ReducedHolders
Q4 2024592,660$3.56M<0.1%−87,853−12.9%ReducedHolders
Q3 2024680,513$4.59M<0.1%−393,578−36.6%ReducedHolders
Q2 20241,074,091$8.15M<0.1%+525,853+95.9%AddedHolders
Q1 2024548,238$4.69M<0.1%−163,491−23.0%ReducedHolders
Q4 2023711,729$3.99M<0.1%−83,953−10.6%ReducedHolders
Q3 2023795,682$4.18M<0.1%−44,953−5.3%ReducedHolders
Q2 2023840,635$4.25M<0.1%−258,390−23.5%ReducedHolders
Q1 20231,099,025$6.32M<0.1%−395,561−26.5%ReducedHolders
Q4 20221,494,586$11.0M<0.1%−707,407−32.1%ReducedHolders
Q3 20222,201,993$22.7M<0.1%−1,014,535−31.5%ReducedHolders
Q2 20223,216,528$37.2M0.1%+3,072,322+2,130.5%AddedHolders
Q1 2022144,206$1.02M<0.1%−3,129−2.1%ReducedHolders
Q4 2021147,335$1.11M<0.1%+137,298+1,367.9%AddedHolders
Q3 202110,037$74.0K<0.1%−47,121−82.4%ReducedHolders
Q2 202157,158$359.0K<0.1%+38,013+198.6%AddedHolders
Q1 202119,145$124.0K<0.1%––Holders

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