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.
13F holders, Q1 2026
Institutional positions in Siga Technologies Inc as of Mar 31, 2026. 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
- 183
- −12 vs. Q4 2025
- Shares held
- 34.4M
- +1.49M (+4.5%) vs. Q4 2025
- Total value
- $184.0M
- −$17.2M (−8.5%) vs. Q4 2025
- New holders
- 27
- 66 more added
- Sold out
- 39
- 68 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 161 | $127.0M |
| Q1 2026 | 183 | $184.0M |
| Q4 2025 | 200 | $219.1M |
| Q3 2025 | 197 | $311.0M |
| Q2 2025 | 178 | $224.8M |
| Q1 2025 | 167 | $192.5M |
| Q4 2024 | 170 | $208.0M |
| Q3 2024 | 169 | $240.7M |
| Q2 2024 | 151 | $256.6M |
| Q1 2024 | 144 | $288.1M |
| Q4 2023 | 131 | $190.9M |
| Q3 2023 | 129 | $180.8M |
| Q2 2023 | 131 | $168.1M |
| Q1 2023 | 142 | $182.1M |
| Q4 2022 | 160 | $227.9M |
| Q3 2022 | 155 | $296.8M |
| Q2 2022 | 142 | $302.3M |
| Q1 2022 | 110 | $150.5M |
| Q4 2021 | 116 | $166.7M |
| Q3 2021 | 104 | $159.6M |
| Q2 2021 | 102 | $128.2M |
| Q1 2021 | 105 | $139.8M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Siga Technologies Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Russell Investments Group, Ltd. | 37,665 | $201.5K | 0.00% | +2,410+6.8% | Added |
| Point72 Asset Management, L.P. | 37,728 | $201.8K | 0.00% | +37,728 | New |
| EntryPoint Capital, LLC | 38,200 | $204.4K | 0.06% | +38,200 | New |
| Cresset Asset Management, LLC | 40,690 | $217.7K | 0.00% | 00.0% | Unchanged |
| Inspire Advisors, LLC | 40,823 | $218.4K | 0.02% | +24,056+143.5% | Added |
| Vestcor Inc | 41,200 | $220.0K | 0.01% | −12,117−22.7% | Reduced |
| Cambria Investment Management, L.P. | 42,083 | $225.1K | 0.01% | +16,185+62.5% | Added |
| DGS Capital Management, LLC | 42,434 | $227.0K | 0.04% | −7,936−15.8% | Reduced |
| Franklin Resources Inc | 43,862 | $234.7K | 0.00% | −16,270−27.1% | Reduced |
| Exchange Traded Concepts, LLC | 46,878 | $250.8K | 0.00% | +6,990+17.5% | Added |
| SEI Investments Co | 48,420 | $259.0K | 0.00% | +23,400+93.5% | Added |
| Strategic Blueprint, LLC | 50,000 | $267.5K | 0.02% | −1,100−2.2% | Reduced |
| Davenport & Co LLC | 50,000 | $267.5K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 51,142 | $273.6K | 0.00% | −2,493−4.6% | Reduced |
| Jane Street Group, LLC | 52,080 | $278.6K | 0.00% | −68,778−56.9% | Reduced |
| James Investment Research Inc | 53,546 | $286.5K | 0.03% | 00.0% | Unchanged |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 53,694 | $287.3K | 0.00% | +9,772+22.2% | Added |
| Squarepoint Ops LLC | 58,571 | $313.4K | 0.00% | +43,557+290.1% | Added |
| Jefferies Financial Group Inc. | 62,667 | $335.3K | 0.00% | +62,667 | New |
| Price T Rowe Associates Inc | 63,337 | $339.0K | 0.00% | +16,993+36.7% | Added |
| Wealth Enhancement Advisory Services, LLC | 66,668 | $349.3K | 0.00% | +726+1.1% | Added |
| Los Angeles Capital Management LLC | 69,082 | $369.6K | 0.00% | +22,529+48.4% | Added |
| Canada Pension Plan Investment Board | 69,400 | $371.3K | 0.00% | −5,600−7.5% | Reduced |
| Alliancebernstein L.P. | 63,710 | $389.3K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 85,240 | $456.0K | 0.05% | +2,291+2.8% | Added |
| KLP Kapitalforvaltning AS | 87,200 | $466.5K | 0.00% | −9,000−9.4% | Reduced |
| Vanguard Global Advisers, LLC | 90,778 | $485.7K | 0.00% | +90,778 | New |
| Campbell & CO Investment Adviser LLC | 92,125 | $492.9K | 0.03% | +36,477+65.5% | Added |
| Martingale Asset Management L P | 92,260 | $493.6K | 0.01% | 00.0% | Unchanged |
| Trexquant Investment LP | 93,440 | $499.9K | 0.00% | +35,843+62.2% | Added |
| Man Group plc | 94,513 | $505.6K | 0.00% | +36,969+64.2% | Added |
| Prudential Financial Inc | 100,590 | $538.2K | 0.00% | +3,698+3.8% | Added |
| Nuveen, LLC | 100,899 | $539.8K | 0.00% | +801+0.8% | Added |
| SummerHaven Investment Management, LLC | 101,025 | $540.5K | 0.33% | −21,684−17.7% | Reduced |
| UBS Group AG | 104,062 | $556.7K | 0.00% | +81,666+364.6% | Added |
| O'Shaughnessy Asset Management, LLC | 107,138 | $573.2K | 0.00% | +57,481+115.8% | Added |
| STRS Ohio | 109,900 | $588.0K | 0.00% | +19,800+22.0% | Added |
| Invesco Ltd. | 111,518 | $596.6K | 0.00% | −1,919−1.7% | Reduced |
| Winton Group Ltd | 124,391 | $665.5K | 0.02% | +27,014+27.7% | Added |
| State Board of Administration of Florida Retirement System | 131,626 | $704.2K | 0.00% | −107,349−44.9% | Reduced |
| First Trust Advisors LP | 160,355 | $857.9K | 0.00% | +5,411+3.5% | Added |
| Creative Planning | 168,555 | $901.8K | 0.00% | +96,274+133.2% | Added |
| State of Wisconsin Investment Board | 177,800 | $951.2K | 0.00% | −37,516−17.4% | Reduced |
| Ameriprise Financial Inc | 183,537 | $981.9K | 0.00% | −14,473−7.3% | Reduced |
| Janus Henderson Group PLC | 187,521 | $1.00M | 0.00% | −1,196−0.6% | Reduced |
| Acadian Asset Management LLC | 188,484 | $1.01M | 0.00% | −105,705−35.9% | Reduced |
| Macquarie Group Ltd | 244,853 | $1.31M | 0.01% | 00.0% | Unchanged |
| Nomura Asset Management International Inc. | 244,853 | $1.31M | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 256,803 | $1.37M | 0.00% | +2,635+1.0% | Added |
| Morgan Stanley | 263,335 | $1.41M | 0.00% | −231,121−46.7% | Reduced |
| Segall Bryant & Hamill, LLC | 273,522 | $1.46M | 0.02% | −486−0.2% | Reduced |
| Vanguard Fiduciary Trust Co | 275,178 | $1.47M | 0.00% | +275,178 | New |
| Jacobs Levy Equity Management, Inc | 291,846 | $1.56M | 0.01% | −204,320−41.2% | Reduced |
| Northern Trust Corp | 340,175 | $1.82M | 0.00% | −35,672−9.5% | Reduced |
| Charles Schwab Investment Management Inc | 340,321 | $1.82M | 0.00% | +23,620+7.5% | Added |
| HRT Financial LP | 360,067 | $1.93M | 0.00% | +360,067 | New |
| Uniplan Investment Counsel, Inc. | 371,413 | $1.99M | 0.20% | −24,484−6.2% | Reduced |
| Victory Capital Management Inc | 376,571 | $2.01M | 0.00% | +36,627+10.8% | Added |
| Qube Research & Technologies Ltd | 415,104 | $2.22M | 0.00% | +250,269+151.8% | Added |
| Two Sigma Investments, LP | 433,661 | $2.32M | 0.00% | +423,261+4,069.8% | Added |
| Denali Advisors LLC | 436,887 | $2.34M | 0.26% | +75,087+20.8% | Added |
| D. E. Shaw & Co., Inc. | 456,385 | $2.44M | 0.00% | −98,186−17.7% | Reduced |
| Millennium Management LLC | 466,324 | $2.49M | 0.00% | −22,986−4.7% | Reduced |
| Renaissance Technologies LLC | 475,013 | $2.54M | 0.00% | +96,913+25.6% | Added |
| Bank of America Corp | 484,672 | $2.59M | 0.00% | −156,749−24.4% | Reduced |
| Legato Capital Management LLC | 512,039 | $2.74M | 0.25% | −68,506−11.8% | Reduced |
| LSV Asset Management | 538,630 | $2.88M | 0.01% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 586,974 | $3.14M | 0.00% | +586,974 | New |
| New York State Common Retirement Fund | 590,761 | $3.16M | 0.00% | +20,200+3.5% | Added |
| Goldman Sachs Group Inc | 624,903 | $3.34M | 0.00% | −22,243−3.4% | Reduced |
| Royce & Associates LP | 667,646 | $3.57M | 0.04% | +56,627+9.3% | Added |
| Citadel Advisors LLC | 705,137 | $3.77M | 0.00% | −337,946−32.4% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 827,047 | $4.42M | 0.01% | +7,600+0.9% | Added |
| First Wilshire Securities Management Inc | 890,498 | $4.76M | 1.07% | +206,445+30.2% | Added |
| State Street Corp | 1,011,938 | $5.41M | 0.00% | −63,632−5.9% | Reduced |
| AQR Capital Management LLC | 1,219,677 | $6.53M | 0.00% | +346,882+39.7% | Added |
| Geode Capital Management, LLC | 1,315,545 | $7.04M | 0.00% | +310,811+30.9% | Added |
| American Century Companies Inc | 1,317,784 | $7.05M | 0.00% | +152,295+13.1% | Added |
| Arrowstreet Capital, Limited Partnership | 1,525,960 | $8.16M | 0.00% | +500,880+48.9% | Added |
| Vanguard Capital Management LLC | 1,714,380 | $9.17M | 0.00% | +1,714,380 | New |
| AltraVue Capital, LLC | 2,432,024 | $13.0M | 1.12% | +23,200+1.0% | Added |
| Dimensional Fund Advisors LP | 2,702,724 | $14.5M | 0.00% | +165,930+6.5% | Added |
| BlackRock, Inc. | 3,494,193 | $18.7M | 0.00% | −95,077−2.6% | Reduced |
| Jupiter Asset Management Ltd | 0 | $0 | 0.00% | −990,648−100.0% | Sold out |
| CSM Advisors, LLC | 0 | $0 | 0.00% | −627,870−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −197,868−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −127,969−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −104,645−100.0% | Sold out |
| Point Nemo Capital, LLC | 0 | $0 | 0.00% | −85,553−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −83,900−100.0% | Sold out |
| Aviva PLC | 0 | $0 | 0.00% | −78,893−100.0% | Sold out |
| Precision Wealth Strategies, LLC | 0 | $0 | 0.00% | −67,794−100.0% | Sold out |
| Principal Financial Group Inc | 0 | $0 | 0.00% | −63,782−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −54,014−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −51,688−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −49,189−100.0% | Sold out |
| State of Tennessee, Treasury Department | 0 | $0 | 0.00% | −36,398−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −34,786−100.0% | Sold out |
| Linden Thomas Advisory Services, LLC | 0 | $0 | 0.00% | −28,465−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −21,057−100.0% | Sold out |