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