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, Q3 2025
Institutional positions in Siga Technologies Inc as of Sep 30, 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
- 197
- +20 vs. Q2 2025
- Shares held
- 34.0M
- −461.6K (−1.3%) vs. Q2 2025
- Total value
- $311.0M
- +$86.3M (+38.4%) vs. Q2 2025
- New holders
- 37
- 68 more added
- Sold out
- 17
- 56 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Siga Technologies Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| October Effect Ltd | 25,666 | $234.8K | 0.26% | −2,000−7.2% | Reduced |
| Centiva Capital, LP | 25,828 | $236.3K | 0.02% | +6,462+33.4% | Added |
| Washington Growth Strategies LLC | 26,216 | $239.9K | 0.17% | 00.0% | Unchanged |
| Petrus Trust Company, LTA | 26,414 | $241.7K | 0.03% | +26,414 | New |
| Russell Investments Group, Ltd. | 27,706 | $253.5K | 0.00% | +12,069+77.2% | Added |
| Linden Thomas Advisory Services, LLC | 28,547 | $261.2K | 0.03% | +914+3.3% | Added |
| Susquehanna International Group, LLP | 29,201 | $267.2K | 0.00% | −41,450−58.7% | Reduced |
| Deutsche Bank AG | 29,910 | $273.7K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 30,422 | $278.4K | 0.00% | +20.0% | Added |
| Wells Fargo & Company | 30,778 | $281.6K | 0.00% | +8,398+37.5% | Added |
| HSBC Holdings PLC | 31,400 | $287.0K | 0.00% | +2,939+10.3% | Added |
| Exchange Traded Concepts, LLC | 31,433 | $287.6K | 0.00% | −7,790−19.9% | Reduced |
| ExodusPoint Capital Management, LP | 32,904 | $301.1K | 0.00% | +32,904 | New |
| DGS Capital Management, LLC | 33,268 | $304.4K | 0.06% | +3,492+11.7% | Added |
| Penn Mutual Asset Management, LLC | 38,280 | $350.3K | 0.68% | 00.0% | Unchanged |
| California State Teachers Retirement System | 40,274 | $368.5K | 0.00% | +20.0% | Added |
| Cresset Asset Management, LLC | 40,690 | $372.3K | 0.00% | +13,359+48.9% | Added |
| Price T Rowe Associates Inc | 42,765 | $392.0K | 0.00% | 00.0% | Unchanged |
| Principal Financial Group Inc | 43,993 | $402.5K | 0.00% | +11,717+36.3% | Added |
| Significant Wealth Partners LLC | 44,452 | $406.7K | 0.20% | +731+1.7% | Added |
| O'Shaughnessy Asset Management, LLC | 44,797 | $409.9K | 0.00% | +44,797 | New |
| Trexquant Investment LP | 45,318 | $414.7K | 0.00% | +45,318 | New |
| Los Angeles Capital Management LLC | 45,447 | $415.8K | 0.00% | −115,406−71.7% | Reduced |
| Qube Research & Technologies Ltd | 46,189 | $422.6K | 0.00% | +46,189 | New |
| Man Group plc | 47,191 | $431.8K | 0.00% | +10,992+30.4% | Added |
| Alps Advisors Inc | 51,120 | $467.7K | 0.00% | +51,120 | New |
| Legal & General Group Plc | 53,094 | $485.8K | 0.00% | 00.0% | Unchanged |
| James Investment Research Inc | 53,546 | $489.9K | 0.05% | 00.0% | Unchanged |
| Aviva PLC | 55,623 | $508.9K | 0.00% | +4,479+8.8% | Added |
| Wealth Enhancement Advisory Services, LLC | 60,420 | $509.9K | 0.00% | +1,528+2.6% | Added |
| Creative Planning | 56,959 | $521.2K | 0.00% | +22,413+64.9% | Added |
| State of Wyoming | 58,520 | $535.5K | 0.06% | +18,218+45.2% | Added |
| Alliancebernstein L.P. | 63,710 | $582.9K | 0.00% | −5,400−7.8% | Reduced |
| Rhumbline Advisers | 64,337 | $588.7K | 0.00% | −3,749−5.5% | Reduced |
| STRS Ohio | 66,400 | $607.6K | 0.00% | +41,000+161.4% | Added |
| Barclays PLC | 72,618 | $664.5K | 0.00% | −22,468−23.6% | Reduced |
| Jump Financial, LLC | 74,170 | $678.7K | 0.01% | +74,170 | New |
| Royal Bank of Canada | 79,550 | $728.0K | 0.00% | −134,288−62.8% | Reduced |
| Franklin Resources Inc | 80,239 | $734.2K | 0.00% | +6,478+8.8% | Added |
| Prudential Financial Inc | 83,387 | $763.0K | 0.00% | +83,387 | New |
| Campbell & CO Investment Adviser LLC | 83,413 | $763.2K | 0.06% | −115,000−58.0% | Reduced |
| Swiss National Bank | 83,900 | $767.7K | 0.00% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 85,481 | $778.0K | 0.00% | +85,481 | New |
| KLP Kapitalforvaltning AS | 87,600 | $801.5K | 0.00% | +6,400+7.9% | Added |
| Walleye Capital LLC | 90,906 | $831.8K | 0.01% | +41,826+85.2% | Added |
| Nuveen, LLC | 100,098 | $915.9K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 105,275 | $963.3K | 0.00% | −4,353−4.0% | Reduced |
| Winton Group Ltd | 105,583 | $966.1K | 0.04% | +105,583 | New |
| Martingale Asset Management L P | 105,660 | $966.8K | 0.02% | −14,087−11.8% | Reduced |
| Jane Street Group, LLC | 108,546 | $993.2K | 0.00% | +10,313+10.5% | Added |
| State Board of Administration of Florida Retirement System | 117,662 | $1.08M | 0.00% | +104,302+780.7% | Added |
| SummerHaven Investment Management, LLC | 122,709 | $1.12M | 0.65% | +24,184+24.5% | Added |
| Cubist Systematic Strategies, LLC | 126,915 | $1.16M | 0.02% | +126,915 | New |
| UBS Asset Management Americas Inc | 127,829 | $1.17M | 0.00% | −67,646−34.6% | Reduced |
| Wellington Management Group LLP | 143,106 | $1.31M | 0.00% | −63,223−30.6% | Reduced |
| First Trust Advisors LP | 151,645 | $1.39M | 0.00% | +732+0.5% | Added |
| Ameriprise Financial Inc | 172,490 | $1.58M | 0.00% | −94,415−35.4% | Reduced |
| UBS Group AG | 173,012 | $1.58M | 0.00% | +138,251+397.7% | Added |
| Brandywine Global Investment Management, LLC | 181,630 | $1.66M | 0.01% | +181,630 | New |
| JPMorgan Chase & Co | 211,055 | $1.93M | 0.00% | +186,067+744.6% | Added |
| State of Wisconsin Investment Board | 215,302 | $1.97M | 0.00% | −38,200−15.1% | Reduced |
| Bridgeway Capital Management, LLC | 217,868 | $1.99M | 0.04% | +106,300+95.3% | Added |
| Millennium Management LLC | 256,337 | $2.35M | 0.00% | +199,852+353.8% | Added |
| Bank of New York Mellon Corp | 270,330 | $2.47M | 0.00% | −21,145−7.3% | Reduced |
| Segall Bryant & Hamill, LLC | 280,647 | $2.57M | 0.03% | −1,698−0.6% | Reduced |
| Macquarie Group Ltd | 284,219 | $2.60M | 0.00% | −13,552−4.6% | Reduced |
| Janus Henderson Group PLC | 289,086 | $2.65M | 0.00% | +269,507+1,376.5% | Added |
| Renaissance Technologies LLC | 308,500 | $2.82M | 0.00% | −290,412−48.5% | Reduced |
| AQR Capital Management LLC | 348,081 | $3.18M | 0.00% | +328,725+1,698.3% | Added |
| Federated Hermes, Inc. | 349,184 | $3.20M | 0.01% | −13,777−3.8% | Reduced |
| Charles Schwab Investment Management Inc | 349,376 | $3.20M | 0.00% | +13,781+4.1% | Added |
| Victory Capital Management Inc | 357,886 | $3.27M | 0.00% | +47,930+15.5% | Added |
| Denali Advisors LLC | 360,300 | $3.30M | 0.37% | −30,803−7.9% | Reduced |
| Northern Trust Corp | 392,880 | $3.59M | 0.00% | −10,493−2.6% | Reduced |
| Uniplan Investment Counsel, Inc. | 396,519 | $3.63M | 0.36% | −65,032−14.1% | Reduced |
| LSV Asset Management | 418,330 | $3.83M | 0.01% | +37,342+9.8% | Added |
| Jacobs Levy Equity Management, Inc | 463,705 | $4.24M | 0.02% | +24,851+5.7% | Added |
| D. E. Shaw & Co., Inc. | 499,753 | $4.57M | 0.00% | +66,731+15.4% | Added |
| Legato Capital Management LLC | 512,039 | $4.69M | 0.51% | −24,472−4.6% | Reduced |
| Bank of America Corp | 518,771 | $4.75M | 0.00% | +113,041+27.9% | Added |
| Goldman Sachs Group Inc | 532,140 | $4.87M | 0.00% | +10,533+2.0% | Added |
| New York State Common Retirement Fund | 570,561 | $5.22M | 0.01% | −22,489−3.8% | Reduced |
| CSM Advisors, LLC | 596,512 | $5.46M | 0.15% | +238,255+66.5% | Added |
| Morgan Stanley | 656,962 | $6.01M | 0.00% | +135,094+25.9% | Added |
| Royce & Associates LP | 680,222 | $6.22M | 0.06% | +37,640+5.9% | Added |
| First Wilshire Securities Management Inc | 687,897 | $6.29M | 1.67% | −9,312−1.3% | Reduced |
| Hotchkis & Wiley Capital Management LLC | 827,587 | $7.57M | 0.02% | −1,240,173−60.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 834,683 | $7.64M | 0.00% | +255,902+44.2% | Added |
| Jupiter Asset Management Ltd | 990,648 | $9.06M | 0.08% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 998,222 | $9.14M | 0.00% | +2740.0% | Added |
| State Street Corp | 1,033,854 | $9.46M | 0.00% | −76,163−6.9% | Reduced |
| Citadel Advisors LLC | 1,125,163 | $10.3M | 0.01% | −269,332−19.3% | Reduced |
| American Century Companies Inc | 1,232,732 | $11.3M | 0.01% | −172,442−12.3% | Reduced |
| AltraVue Capital, LLC | 2,417,514 | $22.1M | 1.83% | −83,630−3.3% | Reduced |
| Dimensional Fund Advisors LP | 2,432,380 | $22.3M | 0.00% | +24,901+1.0% | Added |
| Vanguard Group Inc | 2,655,942 | $24.3M | 0.00% | +142,036+5.7% | Added |
| BlackRock, Inc. | 3,526,009 | $32.3M | 0.00% | −101,955−2.8% | Reduced |
| General American Investors Co Inc | 0 | $0 | 0.00% | −539,738−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −113,735−100.0% | Sold out |
| Davenport & Co LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |