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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; 160 institutions reported holding it in 13F filings for Q2 2026, worth $126.9M in total; no superinvestor holds it.

13F holders, Q1 2021

Institutional positions in Siga Technologies Inc as of Mar 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
105
No complete 13F data for Q4 2020
Shares held
21.5M
No complete 13F data for Q4 2020
Total value
$139.8M
No complete 13F data for Q4 2020

Holders and value by quarter

Institutions reporting SIGA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2021: 105 institutions
Q1 2021: 105 institutionsQ2 2021: 102 institutionsQ3 2021: 104 institutionsQ4 2021: 116 institutionsQ1 2022: 110 institutionsQ2 2022: 142 institutionsQ3 2022: 155 institutionsQ4 2022: 160 institutionsQ1 2023: 142 institutionsQ2 2023: 131 institutionsQ3 2023: 129 institutionsQ4 2023: 131 institutionsQ1 2024: 144 institutionsQ2 2024: 151 institutionsQ3 2024: 169 institutionsQ4 2024: 170 institutionsQ1 2025: 167 institutionsQ2 2025: 178 institutionsQ3 2025: 197 institutionsQ4 2025: 200 institutionsQ1 2026: 183 institutionsQ2 2026: 160 institutions
Value heldQ1 2021: $139.8M
Q1 2021: $139.8MQ2 2021: $128.2MQ3 2021: $159.6MQ4 2021: $166.7MQ1 2022: $150.5MQ2 2022: $302.3MQ3 2022: $296.8MQ4 2022: $227.9MQ1 2023: $182.1MQ2 2023: $168.1MQ3 2023: $180.8MQ4 2023: $190.9MQ1 2024: $288.1MQ2 2024: $256.6MQ3 2024: $240.7MQ4 2024: $208.0MQ1 2025: $192.5MQ2 2025: $224.8MQ3 2025: $311.0MQ4 2025: $219.1MQ1 2026: $184.0MQ2 2026: $126.9M
Institutions holding SIGA and their total value by quarter
QuarterHoldersValue
Q2 2026160$126.9M
Q1 2026183$184.0M
Q4 2025200$219.1M
Q3 2025197$311.0M
Q2 2025178$224.8M
Q1 2025167$192.5M
Q4 2024170$208.0M
Q3 2024169$240.7M
Q2 2024151$256.6M
Q1 2024144$288.1M
Q4 2023131$190.9M
Q3 2023129$180.8M
Q2 2023131$168.1M
Q1 2023142$182.1M
Q4 2022160$227.9M
Q3 2022155$296.8M
Q2 2022142$302.3M
Q1 2022110$150.5M
Q4 2021116$166.7M
Q3 2021104$159.6M
Q2 2021102$128.2M
Q1 2021105$139.8M

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding Siga Technologies Inc.

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

Institutions holding SIGA in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
BlackRock Inc.4,688,441$30.5M0.00%––
Vanguard Group Inc2,583,048$16.8M0.00%––
AltraVue Capital, LLC2,275,923$14.8M3.27%––
Price Michael F1,205,900$7.84M0.94%––
State Street Corp1,016,273$6.61M0.00%––
Geode Capital Management, LLC874,518$5.68M0.00%––
Renaissance Technologies LLC767,014$4.99M0.01%––
Hillsdale Investment Management Inc.647,100$4.21M0.35%––
Wells Fargo & Company620,817$4.04M0.00%––
Arrowstreet Capital, Limited Partnership598,005$3.89M0.01%––
Northern Trust Corp573,596$3.73M0.00%––
Jet Capital Investors L P565,278$3.67M1.04%––
Dimensional Fund Advisors LP548,810$3.57M0.00%––
Legato Capital Management LLC450,060$2.92M0.55%––
New York State Common Retirement Fund379,516$2.47M0.00%––
Charles Schwab Investment Management Inc320,904$2.09M0.00%––
Bank of New York Mellon Corp303,401$1.97M0.00%––
Goldman Sachs Group Inc256,148$1.67M0.00%––
Nuveen Asset Management, LLC223,427$1.45M0.00%––
Davenport & Co LLC219,077$1.42M0.01%––
Los Angeles Capital Management LLC119,860$779.0K0.00%––
Swiss National Bank114,800$746.0K0.00%––
California Public Employees Retirement System110,500$718.0K0.00%––
Nantahala Capital Management, LLC104,702$681.0K0.04%––
State Board of Administration of Florida Retirement System89,496$582.0K0.00%––
Royce & Associates LP87,131$566.0K0.00%––
Bank of America Corp81,665$532.0K0.00%––
California State Teachers Retirement System78,885$513.0K0.00%––
Tudor Investment Corp Et Al78,699$512.0K0.01%––
State of Wisconsin Investment Board75,600$491.0K0.00%––
Winton Group Ltd69,377$451.0K0.03%––
Invesco Ltd.65,891$428.0K0.00%––
Alliancebernstein L.P.64,600$420.0K0.00%––
IndexIQ Advisors LLC61,558$400.0K0.01%––
Rhumbline Advisers59,724$388.0K0.00%––
Nisa Investment Advisors, LLC59,435$386.0K0.00%––
UBS Asset Management Americas Inc57,961$376.7K0.00%––
Parametric Portfolio Associates LLC51,520$335.0K0.00%––
Victory Capital Management Inc45,346$295.0K0.00%––
Barclays PLC44,326$288.0K0.00%––
Millennium Management LLC42,681$277.0K0.00%––
Citadel Advisors LLC40,180$261.0K0.00%––
Credit Suisse AG35,304$229.0K0.00%––
Deutsche Bank AG35,275$229.0K0.00%––
JPMorgan Chase & Co34,240$223.0K0.00%––
Manufacturers Life Insurance Company, The32,629$212.0K0.00%––
American International Group, Inc.30,381$197.0K0.00%––
Two Sigma Investments, LP30,227$196.0K0.00%––
Martingale Asset Management L P28,725$187.0K0.00%––
Voya Investment Management LLC25,933$169.0K0.00%––
ProShare Advisors LLC24,639$160.0K0.00%––
ETF Managers Group, LLC23,709$155.0K0.00%––
Algert Global LLC23,600$153.0K0.05%––
MetLife Investment Management23,408$152.2K0.00%––
Regions Financial Corp21,500$140.0K0.00%––
O'Shaughnessy Asset Management, LLC19,985$130.0K0.00%––
D. E. Shaw & Co., Inc.19,145$124.0K0.00%––
Marshall Wace, LLP17,987$117.0K0.00%––
Cubist Systematic Strategies, LLC15,807$103.0K0.00%––
HRT Financial LP15,714$102.0K0.00%––
Federated Hermes, Inc.15,061$98.0K0.00%––
Metropolitan Life Insurance Co14,870$96.7K0.00%––
Zurcher Kantonalbank (Zurich Cantonalbank)14,749$96.0K0.00%––
Acadian Asset Management LLC14,747$95.0K0.00%––
Arizona State Retirement System14,645$95.0K0.00%––
Mutual Advisors, LLC14,546$95.0K0.01%––
Zebra Capital Management LLC14,459$94.0K0.10%––
TRUE Private Wealth Advisors14,206$92.0K0.01%––
Price T Rowe Associates Inc13,589$88.0K0.00%––
Franklin Resources Inc12,402$81.0K0.00%––
STRS Ohio12,600$81.0K0.00%––
Cypress Capital Management LLC12,500$81.0K0.01%––
Principal Financial Group Inc11,624$76.0K0.00%––
SG Americas Securities, LLC10,798$70.0K0.00%––
Jump Financial, LLC10,800$70.0K0.01%––
Lazard Asset Management LLC10,748$69.0K0.00%––
Commonwealth Equity Services, LLC10,290$66.0K0.00%––
Creative Planning10,030$65.0K0.00%––
Cresset Asset Management, LLC10,033$65.0K0.00%––
UBS Group AG9,134$59.0K0.00%––
Legal & General Group Plc7,816$51.0K0.00%––
BNP Paribas Arbitrage, SA7,478$48.6K0.00%––
Clearstead Advisors, LLC7,000$46.0K0.00%––
Elmwood Wealth Management, Inc.6,600$43.0K0.03%––
Parallel Advisors, LLC6,460$42.0K0.00%––
Royal Bank of Canada5,765$37.0K0.00%––
Citigroup Inc5,482$36.0K0.00%––
Morgan Stanley4,841$32.0K0.00%––
Ameritas Investment Partners, Inc.4,584$30.0K0.00%––
Tower Research Capital LLC (TRC)4,548$30.0K0.00%––
Great West Life Assurance Co3,881$25.0K0.00%––
Jacobi Capital Management LLC2,500$16.0K0.00%––
Bank of Montreal2,055$14.0K0.00%––
Advisor Group Holdings, Inc.2,200$14.0K0.00%––
Simplex Trading, LLC2,067$13.0K0.00%––
Penserra Capital Management LLC1,790$11.0K0.00%––
Macquarie Group Ltd1,355$9.00K0.00%––
Panagora Asset Management Inc806$5.00K0.00%––
Signaturefd, LLC711$5.00K0.00%––
The PNC Financial Services Group, Inc.512$4.00K0.00%––