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, Q2 2026
Institutional positions in Siga Technologies Inc as of Jun 30, 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
- 160
- −19 vs. Q1 2026
- Shares held
- 34.8M
- +701.6K (+2.1%) vs. Q1 2026
- Total value
- $126.9M
- −$55.7M (−30.5%) vs. Q1 2026
- New holders
- 16
- 80 more added
- Sold out
- 35
- 46 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Siga Technologies Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Cambria Investment Management, L.P. | 65,033 | $236.7K | 0.01% | +22,950+54.5% | Added |
| Schonfeld Strategic Advisors LLC | 67,581 | $246.0K | 0.00% | +41,937+163.5% | Added |
| Inspire Advisors, LLC | 68,789 | $250.4K | 0.02% | +27,966+68.5% | Added |
| Canada Pension Plan Investment Board | 69,400 | $252.6K | 0.00% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 69,708 | $253.7K | 0.00% | +33,644+93.3% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 70,772 | $257.6K | 0.00% | +17,078+31.8% | Added |
| Wealth Enhancement Advisory Services, LLC | 74,155 | $266.2K | 0.00% | +7,487+11.2% | Added |
| Winton Group Ltd | 75,647 | $275.4K | 0.01% | −48,744−39.2% | Reduced |
| Vanguard Global Advisers, LLC | 83,009 | $302.2K | 0.00% | −7,769−8.6% | Reduced |
| Price T Rowe Associates Inc | 83,763 | $305.0K | 0.00% | +20,426+32.2% | Added |
| KLP Kapitalforvaltning AS | 87,200 | $317.4K | 0.00% | 00.0% | Unchanged |
| Martingale Asset Management L P | 92,341 | $336.1K | 0.01% | +81+0.1% | Added |
| Nuveen, LLC | 100,899 | $367.3K | 0.00% | 00.0% | Unchanged |
| SummerHaven Investment Management, LLC | 101,025 | $367.7K | 0.20% | 00.0% | Unchanged |
| Prudential Financial Inc | 104,190 | $379.3K | 0.00% | +3,600+3.6% | Added |
| Alliancebernstein L.P. | 71,510 | $382.6K | 0.00% | +7,800+12.2% | Added |
| Invesco Ltd. | 113,091 | $411.7K | 0.00% | +1,573+1.4% | Added |
| Campbell & CO Investment Adviser LLC | 121,177 | $441.1K | 0.02% | +29,052+31.5% | Added |
| STRS Ohio | 134,200 | $488.5K | 0.00% | +24,300+22.1% | Added |
| Los Angeles Capital Management LLC | 145,060 | $528.0K | 0.00% | +75,978+110.0% | Added |
| Man Group plc | 157,348 | $572.7K | 0.00% | +62,835+66.5% | Added |
| First Trust Advisors LP | 159,509 | $580.6K | 0.00% | −846−0.5% | Reduced |
| State of Wisconsin Investment Board | 164,400 | $598.4K | 0.00% | −13,400−7.5% | Reduced |
| UBS Group AG | 181,998 | $662.5K | 0.00% | +77,936+74.9% | Added |
| Ameriprise Financial Inc | 193,368 | $703.9K | 0.00% | +9,831+5.4% | Added |
| Victory Capital Management Inc | 260,062 | $946.6K | 0.00% | −116,509−30.9% | Reduced |
| D. E. Shaw & Co., Inc. | 264,900 | $964.2K | 0.00% | −191,485−42.0% | Reduced |
| Bank of New York Mellon Corp | 265,684 | $967.1K | 0.00% | +8,881+3.5% | Added |
| Segall Bryant & Hamill, LLC | 273,522 | $995.6K | 0.01% | 00.0% | Unchanged |
| Creative Planning | 275,528 | $1.00M | 0.00% | +106,973+63.5% | Added |
| Vanguard Fiduciary Trust Co | 277,358 | $1.01M | 0.00% | +2,180+0.8% | Added |
| Northern Trust Corp | 333,833 | $1.22M | 0.00% | −6,342−1.9% | Reduced |
| Charles Schwab Investment Management Inc | 349,820 | $1.27M | 0.00% | +9,499+2.8% | Added |
| Two Sigma Investments, LP | 357,715 | $1.30M | 0.00% | −75,946−17.5% | Reduced |
| Goldman Sachs Group Inc | 393,007 | $1.43M | 0.00% | −231,896−37.1% | Reduced |
| Denali Advisors LLC | 414,436 | $1.51M | 0.15% | −22,451−5.1% | Reduced |
| Morgan Stanley | 421,009 | $1.53M | 0.00% | +157,674+59.9% | Added |
| Renaissance Technologies LLC | 425,800 | $1.55M | 0.00% | −49,213−10.4% | Reduced |
| Bank of America Corp | 427,275 | $1.56M | 0.00% | −57,397−11.8% | Reduced |
| LSV Asset Management | 461,307 | $1.68M | 0.00% | −77,323−14.4% | Reduced |
| Legato Capital Management LLC | 512,039 | $1.86M | 0.15% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 549,697 | $2.00M | 0.00% | −37,277−6.4% | Reduced |
| Royce & Associates LP | 551,010 | $2.01M | 0.02% | −116,636−17.5% | Reduced |
| Citadel Advisors LLC | 551,246 | $2.01M | 0.00% | −153,891−21.8% | Reduced |
| Uniplan Investment Counsel, Inc. | 560,353 | $2.04M | 0.19% | +188,940+50.9% | Added |
| Jacobs Levy Equity Management, Inc | 566,863 | $2.06M | 0.01% | +275,017+94.2% | Added |
| Millennium Management LLC | 579,599 | $2.11M | 0.00% | +113,275+24.3% | Added |
| New York State Common Retirement Fund | 590,761 | $2.15M | 0.00% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 740,910 | $2.70M | 0.00% | +325,806+78.5% | Added |
| Hotchkis & Wiley Capital Management LLC | 914,047 | $3.33M | 0.01% | +87,000+10.5% | Added |
| State Street Corp | 1,133,989 | $4.13M | 0.00% | +122,051+12.1% | Added |
| AQR Capital Management LLC | 1,245,992 | $4.54M | 0.00% | +26,315+2.2% | Added |
| First Wilshire Securities Management Inc | 1,339,883 | $4.88M | 1.00% | +449,385+50.5% | Added |
| Geode Capital Management, LLC | 1,417,092 | $5.16M | 0.00% | +101,547+7.7% | Added |
| Arrowstreet Capital, Limited Partnership | 1,474,817 | $5.37M | 0.00% | −51,143−3.4% | Reduced |
| American Century Companies Inc | 1,506,065 | $5.48M | 0.00% | +188,281+14.3% | Added |
| Vanguard Capital Management LLC | 1,712,701 | $6.23M | 0.00% | −1,679−0.1% | Reduced |
| AltraVue Capital, LLC | 2,327,144 | $8.47M | 0.61% | −104,880−4.3% | Reduced |
| Dimensional Fund Advisors LP | 2,719,568 | $9.90M | 0.00% | +16,844+0.6% | Added |
| BlackRock, Inc. | 4,186,282 | $15.2M | 0.00% | +692,089+19.8% | Added |
| HRT Financial LP | 0 | $0 | 0.00% | −360,067−100.0% | Sold out |
| Nomura Asset Management International Inc. | 0 | $0 | 0.00% | −244,853−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −244,853−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −188,484−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −107,138−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −93,440−100.0% | Sold out |
| James Investment Research Inc | 0 | $0 | 0.00% | −53,546−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −52,080−100.0% | Sold out |
| Vestcor Inc | 0 | $0 | 0.00% | −41,200−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −29,907−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −26,812−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −25,996−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −24,519−100.0% | Sold out |
| EP Wealth Advisors, LLC | 0 | $0 | 0.00% | −19,127−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −16,100−100.0% | Sold out |
| JustInvest LLC | 0 | $0 | 0.00% | −15,868−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −14,064−100.0% | Sold out |
| Globeflex Capital L P | 0 | $0 | 0.00% | −13,104−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −3,240−100.0% | Sold out |
| Curio Wealth, LLC | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| Private Wealth Asset Management, LLC | 0 | $0 | 0.00% | −1,700−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −1,234−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −358−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −322−100.0% | Sold out |
| Basecamp Wealth Advisors LLC | 0 | $0 | 0.00% | −119−100.0% | Sold out |
| Versant Capital Management, Inc | 0 | $0 | 0.00% | −108−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −75−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −64−100.0% | Sold out |
| Larson Financial Group LLC | 0 | $0 | 0.00% | −47−100.0% | Sold out |
| Sound Income Strategies, LLC | 0 | $0 | 0.00% | −41−100.0% | Sold out |
| Triumph Capital Management | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| JPL Wealth Management, LLC | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| Golden State Equity Partners | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Avion Wealth | 0 | $0 | 0.00% | −108−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| DGS Capital Management, LLC | – | – | – | – | Not filed |
| Cim Investment Mangement Inc | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |