Siga TechnologiesSIGA
13F holders, Q1 2026 (March 31)183holders −17
22new positions
38sold out
6famous investors
$5.35avg. 13F price*
At the end of Q1 2026, 183 institutions reported holding Siga Technologies Inc. (SIGA) in their 13F filings, down 17 from Q4 2025. 22 opened new positions and 38 sold out. The largest holders were BlackRock, Inc. ($18.7M), Dimensional Fund Advisors LP ($14.5M) and AltraVue Capital, LLC ($13.0M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Siga Technologies Inc.
- CUSIP
- 826917106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 22 | $4.0M |
| Exits | 38 | $17.3M |
All 13F filers, Q4 2025 → Q1 2026: 4,088,877 shares bought and 5,275,678 shares sold, net −1,186,801 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 183 holders
| BlackRock, Inc. | 0.00% | Reduce -2.6% | 3,494,193 | $18.7M |
| Dimensional Fund Advisors LP | 0.00% | Add +6.5% | 2,702,724 | $14.5M |
| AltraVue Capital, LLC | 1.12% | Add +1.0% | 2,432,024 | $13.0M |
| Vanguard Capital Management LLC | 0.00% | — | 1,714,380 | $9.2M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +48.9% | 1,525,960 | $8.2M |
| American Century Companies Inc. | 0.00% | Add +13.1% | 1,317,784 | $7.1M |
| Geode Capital Management, LLC | 0.00% | Add +30.9% | 1,315,545 | $7.0M |
| AQR Capital Management | 0.00% | Add +39.7% | 1,219,677 | $6.5M |
| State Street Corp. | 0.00% | Reduce -5.9% | 1,011,938 | $5.4M |
| First Wilshire Securities Management Inc. | 1.07% | Add +30.2% | 890,498 | $4.8M |
| Hotchkis & Wiley Capital Management LLC | 0.01% | Add +0.9% | 827,047 | $4.4M |
| Citadel Advisors | 0.00% | Reduce -32.4% | 705,137 | $3.8M |
| Royce & Associates LP | 0.04% | Add +9.3% | 667,646 | $3.6M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -3.4% | 624,903 | $3.3M |
| New York State Common Retirement Fund | 0.00% | Add +3.5% | 590,761 | $3.2M |
| Vanguard Portfolio Management LLC | 0.00% | — | 586,974 | $3.1M |
| LSV Asset Management | 0.01% | No change | 538,630 | $2.9M |
| Legato Capital Management LLC | 0.25% | Reduce -11.8% | 512,039 | $2.7M |
| Bank of America Corp. | 0.00% | Reduce -24.4% | 484,672 | $2.6M |
| Renaissance Technologies | 0.00% | Add +25.6% | 475,013 | $2.5M |
| Millennium Management | 0.00% | Reduce -4.7% | 466,324 | $2.5M |
| D. E. Shaw & Co. | 0.00% | Reduce -17.7% | 456,385 | $2.4M |
| Denali Advisors LLC | 0.26% | Add +20.8% | 436,887 | $2.3M |
| Two Sigma Investments, LP | 0.00% | Add +4069.8% | 433,661 | $2.3M |
| Qube Research & Technologies Ltd | 0.00% | Add +151.8% | 415,104 | $2.2M |
| Victory Capital Management Inc. | 0.00% | Add +10.8% | 376,571 | $2.0M |
| Uniplan Investment Counsel, Inc. | 0.21% | Reduce -6.2% | 371,413 | $2.0M |
| HRT Financial LP | 0.00% | New | 360,067 | $1.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +7.5% | 340,321 | $1.8M |
| Northern Trust Corp. | 0.00% | Reduce -9.5% | 340,175 | $1.8M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -41.2% | 291,846 | $1.6M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 275,178 | $1.5M |
| Segall Bryant & Hamill, LLC | 0.02% | Reduce -0.2% | 273,522 | $1.5M |
| Morgan Stanley | 0.00% | Reduce -46.7% | 263,335 | $1.4M |
| Bank of New York Mellon Corp | 0.00% | Add +1.0% | 256,803 | $1.4M |
| Nomura Asset Management International Inc. | 0.00% | No change | 244,853 | $1.3M |
| Macquarie Group Ltd. | 0.01% | No change | 244,853 | $1.3M |
| Acadian Asset Management LLC | 0.00% | Reduce -35.9% | 188,484 | $1.0M |
| Janus Henderson Group PLC | 0.00% | Reduce -0.6% | 187,521 | $1.0M |
| Ameriprise Financial Inc. | 0.00% | Reduce -7.3% | 183,537 | $982K |
| State of Wisconsin Investment Board | 0.00% | Reduce -17.4% | 177,800 | $951K |
| Creative Planning | 0.00% | Add +133.2% | 168,555 | $902K |
| First Trust Advisors LP | 0.00% | Add +3.5% | 160,355 | $858K |
| State Board of Administration of Florida Retirement System | 0.00% | Reduce -44.9% | 131,626 | $704K |
| WINTON GROUP Ltd | 0.02% | Add +27.7% | 124,391 | $665K |
| Invesco Ltd. | 0.00% | Reduce -1.7% | 111,518 | $597K |
| STRS Ohio | 0.00% | Add +22.0% | 109,900 | $588K |
| O'shaughnessy Asset Management, LLC | 0.00% | Add +115.8% | 107,138 | $573K |
| UBS Group AG | 0.00% | Add +364.6% | 104,062 | $557K |
| SummerHaven Investment Management, LLC | 0.33% | Reduce -17.7% | 101,025 | $540K |
| Nuveen, LLC | 0.00% | Add +0.8% | 100,899 | $540K |
| Prudential Financial Inc. | 0.00% | Add +3.8% | 100,590 | $538K |
| Man Group plc | 0.00% | Add +64.2% | 94,513 | $506K |
| Trexquant Investment LP | 0.00% | Add +62.2% | 93,440 | $500K |
| Martingale Asset Management L P | 0.01% | No change | 92,260 | $494K |
| Campbell & CO Investment Adviser LLC | 0.03% | Add +65.5% | 92,125 | $493K |
| Vanguard Global Advisers, LLC | 0.00% | — | 90,778 | $486K |
| KLP Kapitalforvaltning As | 0.00% | Reduce -9.4% | 87,200 | $467K |
| State of Wyoming | 0.05% | Add +2.8% | 85,240 | $456K |
| Alliancebernstein L.P. | 0.00% | No change | 63,710 | $389K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -7.5% | 69,400 | $371K |
| Los Angeles Capital Management LLC | 0.00% | Add +48.4% | 69,082 | $370K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +1.1% | 66,668 | $349K |
| T. Rowe Price Associates Inc. | 0.00% | Add +36.7% | 63,337 | $339K |
| Jefferies Financial Group Inc. | 0.00% | New | 62,667 | $335K |
| Squarepoint Ops LLC | 0.00% | Add +290.1% | 58,571 | $313K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 0.01% | Add +22.3% | 53,694 | $287K |
| James Investment Research, Inc. | 0.03% | No change | 53,546 | $286K |
| Jane Street Group, LLC | 0.00% | Reduce -56.9% | 52,080 | $279K |
| Rhumbline Advisers | 0.00% | Reduce -4.7% | 51,142 | $274K |
| Strategic Blueprint, LLC | 0.02% | Reduce -2.1% | 50,000 | $268K |
| DAVENPORT & Co LLC | 0.00% | No change | 50,000 | $268K |
| Sei Investments Co. | 0.00% | Add +93.5% | 48,420 | $259K |
| Exchange Traded Concepts, LLC | 0.00% | Add +17.5% | 46,878 | $251K |
| Franklin Resources Inc. | 0.00% | Reduce -27.1% | 43,862 | $235K |
| DGS Capital Management, LLC | 0.04% | Reduce -15.8% | 42,434 | $227K |
| Cambria Investment Management, L.P. | 0.01% | Add +62.5% | 42,083 | $225K |
| Vestcor Inc | 0.01% | Reduce -22.7% | 41,200 | $220K |
| Inspire Advisors, LLC | 0.02% | Add +143.5% | 40,823 | $218K |
| Cresset Asset Management, LLC | 0.00% | No change | 40,690 | $218K |
| EntryPoint Capital, LLC | 0.06% | New | 38,200 | $204K |
| Point72 Asset Management | 0.00% | New | 37,728 | $202K |
| Russell Investments Group, Ltd. | 0.00% | Add +6.8% | 37,665 | $202K |
| Deutsche Bank AG | 0.00% | Add +17.9% | 37,164 | $199K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | New | 36,064 | $193K |
| Quantinno Capital Management LP | 0.00% | Add +58.0% | 31,589 | $169K |
| Empowered Funds, LLC | 0.00% | New | 30,316 | $162K |
| Graham Capital Management, L.P. | 0.01% | New | 29,907 | $160K |
| Federated Hermes, Inc. | 0.00% | Reduce -79.6% | 28,422 | $152K |
| Mirabella Financial Services LLP | 0.01% | New | 26,812 | $143K |
| Washington Growth Strategies LLC | 0.09% | No change | 26,216 | $140K |
| Engineers Gate Manager LP | 0.00% | New | 25,996 | $139K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -42.7% | 25,644 | $137K |
| Susquehanna International Group, LLP | 0.00% | New | 24,767 | $133K |
| JPMorgan Chase & Co. | 0.00% | Reduce -86.4% | 25,186 | $132K |
| Lazard Asset Management LLC | 0.00% | Reduce -48.7% | 24,519 | $131K |
| Cim Investment Management Inc. | 0.03% | No change | 24,379 | $130K |
| FMR LLC | 0.00% | Add +309.9% | 23,402 | $125K |
| CIBC Bancorp USA Inc. | 0.00% | — | 23,384 | $125K |
| Significant Wealth Partners LLC | 0.15% | Add +4.2% | 23,131 | $124K |
"% of holder's portfolio" is SIGA's weight in each manager's 13F, not the share of Siga Technologies Inc. the manager owns.