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Livermore
Livermore
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Siga Technologies Inc

SIGA
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001010086

No open-market purchases or sales by Siga Technologies Inc insiders were filed in the last 90 days; 161 institutions reported holding it in 13F filings for Q2 2026, worth $127.0M in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Siga Technologies Inc changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of SIGA: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders1781197+20
Shares34.5M19.7K34.0M−461.6K (−1.3%)
Value$224.8M$128.5K$311.0M+$86.3M (+38.4%)

1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (37)

Institutions that held Siga Technologies Inc at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to SIGA in Q3 2025
InstitutionSharesValue% of portfolio
Brandywine Global Investment Management, LLC181,630$1.66M0.01%
Cubist Systematic Strategies, LLC126,915$1.16M0.02%
Winton Group Ltd105,583$966.1K0.04%
Acadian Asset Management LLC85,481$778.0K0.00%
Prudential Financial Inc83,387$763.0K0.00%
Jump Financial, LLC74,170$678.7K0.01%
Alps Advisors Inc51,120$467.7K0.00%
Qube Research & Technologies Ltd46,189$422.6K0.00%
Trexquant Investment LP45,318$414.7K0.00%
O'Shaughnessy Asset Management, LLC44,797$409.9K0.00%
ExodusPoint Capital Management, LP32,904$301.1K0.00%
Petrus Trust Company, LTA26,414$241.7K0.03%
Envestnet Asset Management Inc22,179$202.9K0.00%
Corton Capital Inc.19,823$181.4K0.45%
Prelude Capital Management, LLC19,700$180.3K0.01%
Graham Capital Management, L.P.18,358$168.0K0.01%
Lazard Asset Management LLC16,162$147.9K0.00%
Engineers Gate Manager LP16,135$147.6K0.00%
PharVision Advisers, LLC15,061$137.8K0.08%
Vestcor Inc14,603$134.0K0.00%
Schonfeld Strategic Advisors LLC14,103$129.0K0.00%
SG Americas Securities, LLC13,880$127.0K0.00%
Sherbrooke Park Advisers LLC13,628$124.7K0.06%
One Wealth Advisors, LLC11,622$106.3K0.01%
Quest Partners LLC10,550$96.5K0.01%
Gotham Asset Management, LLC10,059$92.0K0.00%
Quadrant Capital Group LLC4,011$36.7K0.00%
State of Alaska, Department of Revenue3,767$34.0K0.00%
Point72 (DIFC) Ltd2,848$26.1K0.00%
Quarry LP2,488$22.8K0.01%
Curio Wealth, LLC2,000$18.3K0.01%
Altshuler Shaham Ltd488$4.46K0.00%
SJS Investment Consulting Inc.455$4.16K0.00%
Optiver Holding B.V.450$4.12K0.00%
Essential Partners LLC277$2.54K0.00%
Root Financial Partners, LLC14$1280.00%
Caitong International Asset Management Co., Ltd8$730.00%

Sold out (17)

Institutions that held Siga Technologies Inc at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of SIGA in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
General American Investors Co Inc539,738$3.52M
Two Sigma Investments, LP113,735$741.6K
Davenport & Co LLC50,000$326.0K
HRT Financial LP47,044$306.0K
Tudor Investment Corp Et Al36,576$238.5K
Two Sigma Advisers, LP32,100$209.3K
Brevan Howard Capital Management LP28,936$188.7K
Kapitalo Investimentos Ltda28,089$183.1K
Oxford Asset Management LLP27,112$176.8K
Eqis Capital Management, Inc.16,799$109.5K
Voya Investment Management LLC13,065$85.2K
ProShare Advisors LLC11,089$72.3K
Skopos Labs, Inc.5,829$38.0K
Clear Street Markets LLC4,365$28.5K
Steward Partners Investment Advisory, LLC2,900$18.9K
Raymond James Financial Inc1,049$6.84K
Stephens Consulting, LLC65$424

Not filed for Q3 2025 yet (1)

Institutions that held Siga Technologies Inc at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding SIGA in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
EP Wealth Advisors, LLC19,707$128.5K