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, Q4 2025
Institutional positions in Siga Technologies Inc as of Dec 31, 2025. 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
- 200
- +6 vs. Q3 2025
- Shares held
- 35.8M
- +1.99M (+5.9%) vs. Q3 2025
- Total value
- $219.1M
- −$90.5M (−29.2%) vs. Q3 2025
- New holders
- 26
- 77 more added
- Sold out
- 20
- 61 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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 | 160 | $126.9M |
| 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, Q4 2025
Shares, value and share of portfolio for each institution holding Siga Technologies Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,589,270 | $21.9M | 0.00% | +63,261+1.8% | Added |
| Vanguard Group Inc | 2,723,750 | $16.6M | 0.00% | +67,808+2.6% | Added |
| Dimensional Fund Advisors LP | 2,536,794 | $15.5M | 0.00% | +104,414+4.3% | Added |
| AltraVue Capital, LLC | 2,408,824 | $14.7M | 1.21% | −8,690−0.4% | Reduced |
| American Century Companies Inc | 1,165,489 | $7.12M | 0.00% | −67,243−5.5% | Reduced |
| State Street Corp | 1,075,570 | $6.57M | 0.00% | +41,716+4.0% | Added |
| Citadel Advisors LLC | 1,043,083 | $6.37M | 0.00% | −82,080−7.3% | Reduced |
| Arrowstreet Capital, Limited Partnership | 1,025,080 | $6.26M | 0.00% | +190,397+22.8% | Added |
| Geode Capital Management, LLC | 1,004,734 | $6.14M | 0.00% | +6,512+0.7% | Added |
| Jupiter Asset Management Ltd | 990,648 | $6.05M | 0.05% | 00.0% | Unchanged |
| AQR Capital Management LLC | 872,795 | $5.33M | 0.00% | +524,714+150.7% | Added |
| Hotchkis & Wiley Capital Management LLC | 819,447 | $5.01M | 0.01% | −8,140−1.0% | Reduced |
| First Wilshire Securities Management Inc | 684,053 | $4.18M | 1.05% | −3,844−0.6% | Reduced |
| Goldman Sachs Group Inc | 647,146 | $3.95M | 0.00% | +115,006+21.6% | Added |
| Bank of America Corp | 641,421 | $3.92M | 0.00% | +122,650+23.6% | Added |
| CSM Advisors, LLC | 627,870 | $3.83M | 0.10% | +31,358+5.3% | Added |
| Royce & Associates LP | 611,019 | $3.73M | 0.04% | −69,203−10.2% | Reduced |
| Legato Capital Management LLC | 580,545 | $3.55M | 0.31% | +68,506+13.4% | Added |
| New York State Common Retirement Fund | 570,561 | $3.49M | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 554,571 | $3.39M | 0.00% | +54,818+11.0% | Added |
| LSV Asset Management | 538,630 | $3.29M | 0.01% | +120,300+28.8% | Added |
| Jacobs Levy Equity Management, Inc | 496,166 | $3.03M | 0.01% | +32,461+7.0% | Added |
| Morgan Stanley | 494,456 | $3.02M | 0.00% | −162,506−24.7% | Reduced |
| Millennium Management LLC | 489,310 | $2.99M | 0.00% | +232,973+90.9% | Added |
| Uniplan Investment Counsel, Inc. | 395,897 | $2.42M | 0.24% | −622−0.2% | Reduced |
| Renaissance Technologies LLC | 378,100 | $2.31M | 0.00% | +69,600+22.6% | Added |
| Northern Trust Corp | 375,847 | $2.30M | 0.00% | −17,033−4.3% | Reduced |
| Denali Advisors LLC | 361,800 | $2.21M | 0.25% | +1,500+0.4% | Added |
| Victory Capital Management Inc | 339,944 | $2.08M | 0.00% | −17,942−5.0% | Reduced |
| Charles Schwab Investment Management Inc | 316,701 | $1.94M | 0.00% | −32,675−9.4% | Reduced |
| Acadian Asset Management LLC | 294,189 | $1.79M | 0.00% | +208,708+244.2% | Added |
| Segall Bryant & Hamill, LLC | 274,008 | $1.67M | 0.02% | −6,639−2.4% | Reduced |
| Bank of New York Mellon Corp | 254,168 | $1.55M | 0.00% | −16,162−6.0% | Reduced |
| Macquarie Group Ltd | 244,853 | $1.50M | 0.01% | −39,366−13.9% | Reduced |
| Nomura Asset Management International Inc. | 244,853 | $1.50M | 0.00% | +244,853 | New |
| State Board of Administration of Florida Retirement System | 238,975 | $1.46M | 0.00% | +121,313+103.1% | Added |
| State of Wisconsin Investment Board | 215,316 | $1.32M | 0.00% | +140.0% | Added |
| Ameriprise Financial Inc | 198,010 | $1.21M | 0.00% | +25,520+14.8% | Added |
| Bridgeway Capital Management, LLC | 197,868 | $1.21M | 0.03% | −20,000−9.2% | Reduced |
| Janus Henderson Group PLC | 188,717 | $1.15M | 0.00% | −100,369−34.7% | Reduced |
| JPMorgan Chase & Co | 184,966 | $1.13M | 0.00% | −26,089−12.4% | Reduced |
| Brandywine Global Investment Management, LLC | 175,030 | $1.07M | 0.01% | −6,600−3.6% | Reduced |
| Qube Research & Technologies Ltd | 164,835 | $1.01M | 0.00% | +118,646+256.9% | Added |
| First Trust Advisors LP | 154,944 | $946.7K | 0.00% | +3,299+2.2% | Added |
| Federated Hermes, Inc. | 139,510 | $852.4K | 0.00% | −209,674−60.0% | Reduced |
| Wellington Management Group LLP | 127,969 | $781.9K | 0.00% | −15,137−10.6% | Reduced |
| UBS Asset Management Americas Inc | 127,829 | $781.0K | 0.00% | 00.0% | Unchanged |
| SummerHaven Investment Management, LLC | 122,709 | $749.8K | 0.43% | 00.0% | Unchanged |
| Jane Street Group, LLC | 120,858 | $738.4K | 0.00% | +12,312+11.3% | Added |
| Invesco Ltd. | 113,437 | $693.1K | 0.00% | +8,162+7.8% | Added |
| Integrated Quantitative Investments LLC | 104,645 | $639.4K | 0.14% | +104,645 | New |
| Nuveen, LLC | 100,098 | $611.6K | 0.00% | 00.0% | Unchanged |
| Winton Group Ltd | 97,377 | $595.0K | 0.02% | −8,206−7.8% | Reduced |
| Prudential Financial Inc | 96,892 | $592.0K | 0.00% | +13,505+16.2% | Added |
| KLP Kapitalforvaltning AS | 96,200 | $587.8K | 0.00% | +8,600+9.8% | Added |
| Martingale Asset Management L P | 92,260 | $563.7K | 0.01% | −13,400−12.7% | Reduced |
| STRS Ohio | 90,100 | $550.5K | 0.00% | +23,700+35.7% | Added |
| Point Nemo Capital, LLC | 85,553 | $522.7K | 0.52% | +85,553 | New |
| Swiss National Bank | 83,900 | $512.6K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 82,949 | $506.8K | 0.06% | +24,429+41.7% | Added |
| Aviva PLC | 78,893 | $482.0K | 0.00% | +23,270+41.8% | Added |
| Barclays PLC | 77,325 | $472.5K | 0.00% | +4,707+6.5% | Added |
| Canada Pension Plan Investment Board | 75,000 | $458.3K | 0.00% | +75,000 | New |
| Creative Planning | 72,281 | $441.6K | 0.00% | +15,322+26.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 65,942 | $439.2K | 0.00% | +5,522+9.1% | Added |
| Precision Wealth Strategies, LLC | 67,794 | $414.2K | 0.13% | +67,794 | New |
| Principal Financial Group Inc | 63,782 | $389.7K | 0.00% | +19,789+45.0% | Added |
| Alliancebernstein L.P. | 63,710 | $389.3K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 46,553 | $386.9K | 0.00% | +1,106+2.4% | Added |
| Franklin Resources Inc | 60,132 | $367.4K | 0.00% | −20,107−25.1% | Reduced |
| Trexquant Investment LP | 57,597 | $351.9K | 0.00% | +12,279+27.1% | Added |
| Man Group plc | 57,544 | $351.6K | 0.00% | +10,353+21.9% | Added |
| Campbell & CO Investment Adviser LLC | 55,648 | $340.0K | 0.02% | −27,765−33.3% | Reduced |
| ExodusPoint Capital Management, LP | 54,014 | $330.0K | 0.00% | +21,110+64.2% | Added |
| Rhumbline Advisers | 53,635 | $327.7K | 0.00% | −10,702−16.6% | Reduced |
| James Investment Research Inc | 53,546 | $327.2K | 0.04% | 00.0% | Unchanged |
| Vestcor Inc | 53,317 | $326.0K | 0.01% | +38,714+265.1% | Added |
| Alps Advisors Inc | 51,688 | $315.8K | 0.00% | +568+1.1% | Added |
| Strategic Blueprint, LLC | 51,100 | $312.2K | 0.02% | +51,100 | New |
| DGS Capital Management, LLC | 50,370 | $307.8K | 0.05% | +17,102+51.4% | Added |
| Skopos Labs, Inc. | 49,189 | $307.4K | 0.01% | +49,189 | New |
| Davenport & Co LLC | 50,000 | $305.5K | 0.00% | +50,000 | New |
| O'Shaughnessy Asset Management, LLC | 49,657 | $303.4K | 0.00% | +4,860+10.8% | Added |
| Lazard Asset Management LLC | 47,766 | $291.9K | 0.00% | +31,604+195.5% | Added |
| Price T Rowe Associates Inc | 46,344 | $284.0K | 0.00% | +3,579+8.4% | Added |
| Wells Fargo & Company | 45,154 | $275.9K | 0.00% | +14,376+46.7% | Added |
| Legal & General Group Plc | 44,866 | $274.1K | 0.00% | −8,228−15.5% | Reduced |
| Schonfeld Strategic Advisors LLC | 44,754 | $273.4K | 0.00% | +30,651+217.3% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 43,922 | $268.4K | 0.00% | +43,922 | New |
| HSBC Holdings PLC | 42,011 | $256.7K | 0.00% | +10,611+33.8% | Added |
| Cresset Asset Management, LLC | 40,690 | $248.6K | 0.00% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 36,398 | $243.9K | 0.00% | +13,154+56.6% | Added |
| Exchange Traded Concepts, LLC | 39,888 | $243.7K | 0.00% | +8,455+26.9% | Added |
| California State Teachers Retirement System | 39,445 | $241.0K | 0.00% | −829−2.1% | Reduced |
| Russell Investments Group, Ltd. | 35,255 | $215.4K | 0.00% | +7,549+27.2% | Added |
| Oxford Asset Management LLP | 34,786 | $212.5K | 0.08% | +34,786 | New |
| Deutsche Bank AG | 31,512 | $192.5K | 0.00% | +1,602+5.4% | Added |
| Linden Thomas Advisory Services, LLC | 28,465 | $173.9K | 0.02% | −82−0.3% | Reduced |
| Washington Growth Strategies LLC | 26,216 | $160.2K | 0.10% | 00.0% | Unchanged |
| Cambria Investment Management, L.P. | 25,898 | $158.2K | 0.01% | +4,014+18.3% | Added |