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, 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 | 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, 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,526,009 | $32.3M | 0.00% | −101,955−2.8% | Reduced |
| Vanguard Group Inc | 2,655,942 | $24.3M | 0.00% | +142,036+5.7% | Added |
| Dimensional Fund Advisors LP | 2,432,380 | $22.3M | 0.00% | +24,901+1.0% | Added |
| AltraVue Capital, LLC | 2,417,514 | $22.1M | 1.83% | −83,630−3.3% | Reduced |
| American Century Companies Inc | 1,232,732 | $11.3M | 0.01% | −172,442−12.3% | Reduced |
| Citadel Advisors LLC | 1,125,163 | $10.3M | 0.01% | −269,332−19.3% | Reduced |
| State Street Corp | 1,033,854 | $9.46M | 0.00% | −76,163−6.9% | Reduced |
| Geode Capital Management, LLC | 998,222 | $9.14M | 0.00% | +2740.0% | Added |
| Jupiter Asset Management Ltd | 990,648 | $9.06M | 0.08% | 00.0% | Unchanged |
| Arrowstreet Capital, Limited Partnership | 834,683 | $7.64M | 0.00% | +255,902+44.2% | Added |
| Hotchkis & Wiley Capital Management LLC | 827,587 | $7.57M | 0.02% | −1,240,173−60.0% | Reduced |
| First Wilshire Securities Management Inc | 687,897 | $6.29M | 1.67% | −9,312−1.3% | Reduced |
| Royce & Associates LP | 680,222 | $6.22M | 0.06% | +37,640+5.9% | Added |
| Morgan Stanley | 656,962 | $6.01M | 0.00% | +135,094+25.9% | Added |
| CSM Advisors, LLC | 596,512 | $5.46M | 0.15% | +238,255+66.5% | Added |
| New York State Common Retirement Fund | 570,561 | $5.22M | 0.01% | −22,489−3.8% | Reduced |
| Goldman Sachs Group Inc | 532,140 | $4.87M | 0.00% | +10,533+2.0% | Added |
| Bank of America Corp | 518,771 | $4.75M | 0.00% | +113,041+27.9% | Added |
| Legato Capital Management LLC | 512,039 | $4.69M | 0.51% | −24,472−4.6% | Reduced |
| D. E. Shaw & Co., Inc. | 499,753 | $4.57M | 0.00% | +66,731+15.4% | Added |
| Jacobs Levy Equity Management, Inc | 463,705 | $4.24M | 0.02% | +24,851+5.7% | Added |
| LSV Asset Management | 418,330 | $3.83M | 0.01% | +37,342+9.8% | Added |
| Uniplan Investment Counsel, Inc. | 396,519 | $3.63M | 0.36% | −65,032−14.1% | Reduced |
| Northern Trust Corp | 392,880 | $3.59M | 0.00% | −10,493−2.6% | Reduced |
| Denali Advisors LLC | 360,300 | $3.30M | 0.37% | −30,803−7.9% | Reduced |
| Victory Capital Management Inc | 357,886 | $3.27M | 0.00% | +47,930+15.5% | Added |
| Charles Schwab Investment Management Inc | 349,376 | $3.20M | 0.00% | +13,781+4.1% | Added |
| Federated Hermes, Inc. | 349,184 | $3.20M | 0.01% | −13,777−3.8% | Reduced |
| AQR Capital Management LLC | 348,081 | $3.18M | 0.00% | +328,725+1,698.3% | Added |
| Renaissance Technologies LLC | 308,500 | $2.82M | 0.00% | −290,412−48.5% | Reduced |
| Janus Henderson Group PLC | 289,086 | $2.65M | 0.00% | +269,507+1,376.5% | Added |
| Macquarie Group Ltd | 284,219 | $2.60M | 0.00% | −13,552−4.6% | Reduced |
| Segall Bryant & Hamill, LLC | 280,647 | $2.57M | 0.03% | −1,698−0.6% | Reduced |
| Bank of New York Mellon Corp | 270,330 | $2.47M | 0.00% | −21,145−7.3% | Reduced |
| Millennium Management LLC | 256,337 | $2.35M | 0.00% | +199,852+353.8% | Added |
| Bridgeway Capital Management, LLC | 217,868 | $1.99M | 0.04% | +106,300+95.3% | Added |
| State of Wisconsin Investment Board | 215,302 | $1.97M | 0.00% | −38,200−15.1% | Reduced |
| JPMorgan Chase & Co | 211,055 | $1.93M | 0.00% | +186,067+744.6% | Added |
| Brandywine Global Investment Management, LLC | 181,630 | $1.66M | 0.01% | +181,630 | New |
| UBS Group AG | 173,012 | $1.58M | 0.00% | +138,251+397.7% | Added |
| Ameriprise Financial Inc | 172,490 | $1.58M | 0.00% | −94,415−35.4% | Reduced |
| First Trust Advisors LP | 151,645 | $1.39M | 0.00% | +732+0.5% | Added |
| Wellington Management Group LLP | 143,106 | $1.31M | 0.00% | −63,223−30.6% | Reduced |
| UBS Asset Management Americas Inc | 127,829 | $1.17M | 0.00% | −67,646−34.6% | Reduced |
| Cubist Systematic Strategies, LLC | 126,915 | $1.16M | 0.02% | +126,915 | New |
| SummerHaven Investment Management, LLC | 122,709 | $1.12M | 0.65% | +24,184+24.5% | Added |
| State Board of Administration of Florida Retirement System | 117,662 | $1.08M | 0.00% | +104,302+780.7% | Added |
| Jane Street Group, LLC | 108,546 | $993.2K | 0.00% | +10,313+10.5% | Added |
| Martingale Asset Management L P | 105,660 | $966.8K | 0.02% | −14,087−11.8% | Reduced |
| Winton Group Ltd | 105,583 | $966.1K | 0.04% | +105,583 | New |
| Invesco Ltd. | 105,275 | $963.3K | 0.00% | −4,353−4.0% | Reduced |
| Nuveen, LLC | 100,098 | $915.9K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 90,906 | $831.8K | 0.01% | +41,826+85.2% | Added |
| KLP Kapitalforvaltning AS | 87,600 | $801.5K | 0.00% | +6,400+7.9% | Added |
| Acadian Asset Management LLC | 85,481 | $778.0K | 0.00% | +85,481 | New |
| Swiss National Bank | 83,900 | $767.7K | 0.00% | 00.0% | Unchanged |
| Campbell & CO Investment Adviser LLC | 83,413 | $763.2K | 0.06% | −115,000−58.0% | Reduced |
| Prudential Financial Inc | 83,387 | $763.0K | 0.00% | +83,387 | New |
| Franklin Resources Inc | 80,239 | $734.2K | 0.00% | +6,478+8.8% | Added |
| Royal Bank of Canada | 79,550 | $728.0K | 0.00% | −134,288−62.8% | Reduced |
| Jump Financial, LLC | 74,170 | $678.7K | 0.01% | +74,170 | New |
| Barclays PLC | 72,618 | $664.5K | 0.00% | −22,468−23.6% | Reduced |
| STRS Ohio | 66,400 | $607.6K | 0.00% | +41,000+161.4% | Added |
| Rhumbline Advisers | 64,337 | $588.7K | 0.00% | −3,749−5.5% | Reduced |
| Alliancebernstein L.P. | 63,710 | $582.9K | 0.00% | −5,400−7.8% | Reduced |
| State of Wyoming | 58,520 | $535.5K | 0.06% | +18,218+45.2% | Added |
| Creative Planning | 56,959 | $521.2K | 0.00% | +22,413+64.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 60,420 | $509.9K | 0.00% | +1,528+2.6% | Added |
| Aviva PLC | 55,623 | $508.9K | 0.00% | +4,479+8.8% | Added |
| James Investment Research Inc | 53,546 | $489.9K | 0.05% | 00.0% | Unchanged |
| Legal & General Group Plc | 53,094 | $485.8K | 0.00% | 00.0% | Unchanged |
| Alps Advisors Inc | 51,120 | $467.7K | 0.00% | +51,120 | New |
| Man Group plc | 47,191 | $431.8K | 0.00% | +10,992+30.4% | Added |
| Qube Research & Technologies Ltd | 46,189 | $422.6K | 0.00% | +46,189 | New |
| Los Angeles Capital Management LLC | 45,447 | $415.8K | 0.00% | −115,406−71.7% | Reduced |
| Trexquant Investment LP | 45,318 | $414.7K | 0.00% | +45,318 | New |
| O'Shaughnessy Asset Management, LLC | 44,797 | $409.9K | 0.00% | +44,797 | New |
| Significant Wealth Partners LLC | 44,452 | $406.7K | 0.20% | +731+1.7% | Added |
| Principal Financial Group Inc | 43,993 | $402.5K | 0.00% | +11,717+36.3% | Added |
| Price T Rowe Associates Inc | 42,765 | $392.0K | 0.00% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 40,690 | $372.3K | 0.00% | +13,359+48.9% | Added |
| California State Teachers Retirement System | 40,274 | $368.5K | 0.00% | +20.0% | Added |
| Penn Mutual Asset Management, LLC | 38,280 | $350.3K | 0.68% | 00.0% | Unchanged |
| DGS Capital Management, LLC | 33,268 | $304.4K | 0.06% | +3,492+11.7% | Added |
| ExodusPoint Capital Management, LP | 32,904 | $301.1K | 0.00% | +32,904 | New |
| Exchange Traded Concepts, LLC | 31,433 | $287.6K | 0.00% | −7,790−19.9% | Reduced |
| HSBC Holdings PLC | 31,400 | $287.0K | 0.00% | +2,939+10.3% | Added |
| Wells Fargo & Company | 30,778 | $281.6K | 0.00% | +8,398+37.5% | Added |
| SEI Investments Co | 30,422 | $278.4K | 0.00% | +20.0% | Added |
| Deutsche Bank AG | 29,910 | $273.7K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 29,201 | $267.2K | 0.00% | −41,450−58.7% | Reduced |
| Linden Thomas Advisory Services, LLC | 28,547 | $261.2K | 0.03% | +914+3.3% | Added |
| Russell Investments Group, Ltd. | 27,706 | $253.5K | 0.00% | +12,069+77.2% | Added |
| Petrus Trust Company, LTA | 26,414 | $241.7K | 0.03% | +26,414 | New |
| Washington Growth Strategies LLC | 26,216 | $239.9K | 0.17% | 00.0% | Unchanged |
| Centiva Capital, LP | 25,828 | $236.3K | 0.02% | +6,462+33.4% | Added |
| October Effect Ltd | 25,666 | $234.8K | 0.26% | −2,000−7.2% | Reduced |
| Cim Investment Mangement Inc | 24,379 | $223.1K | 0.06% | −26,256−51.9% | Reduced |
| State of Tennessee, Treasury Department | 23,244 | $212.7K | 0.00% | −7,464−24.3% | Reduced |
| Envestnet Asset Management Inc | 22,179 | $202.9K | 0.00% | +22,179 | New |