Siga TechnologiesSIGA
13F holders, Q4 2025 (December 31)200holders +3
21new positions
20sold out
5famous investors
$6.12avg. 13F price*
At the end of Q4 2025, 200 institutions reported holding Siga Technologies Inc. (SIGA) in their 13F filings, up 3 from Q3 2025. 21 opened new positions and 20 sold out. The largest holders were BlackRock, Inc. ($21.9M), Vanguard Group Inc. ($16.6M) and Dimensional Fund Advisors LP ($15.5M). 5 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Siga Technologies Inc.
- CUSIP
- 826917106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 21 | $3.5M |
| Exits | 20 | $3.2M |
All 13F filers, Q3 2025 → Q4 2025: 3,328,678 shares bought and 1,691,278 shares sold, net +1,637,400 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 200 holders
| BlackRock, Inc. | 0.00% | Add +1.8% | 3,589,270 | $21.9M |
| Vanguard Group Inc. | 0.00% | Add +2.5% | 2,723,750 | $16.6M |
| Dimensional Fund Advisors LP | 0.00% | Add +4.3% | 2,536,794 | $15.5M |
| AltraVue Capital, LLC | 1.21% | Reduce -0.4% | 2,408,824 | $14.7M |
| American Century Companies Inc. | 0.00% | Reduce -5.5% | 1,165,489 | $7.1M |
| State Street Corp. | 0.00% | Add +4.0% | 1,075,570 | $6.6M |
| Citadel Advisors | 0.00% | Reduce -7.3% | 1,043,083 | $6.4M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +22.8% | 1,025,080 | $6.3M |
| Geode Capital Management, LLC | 0.00% | Add +0.7% | 1,004,734 | $6.1M |
| Jupiter Asset Management Ltd. | 0.05% | No change | 990,648 | $6.1M |
| AQR Capital Management | 0.00% | Add +150.7% | 872,795 | $5.3M |
| Hotchkis & Wiley Capital Management LLC | 0.01% | Reduce -1.0% | 819,447 | $5.0M |
| First Wilshire Securities Management Inc. | 1.05% | Reduce -0.6% | 684,053 | $4.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +21.6% | 647,146 | $4.0M |
| Bank of America Corp. | 0.00% | Add +23.6% | 641,421 | $3.9M |
| CSM Advisors, LLC | 0.10% | Add +5.3% | 627,870 | $3.8M |
| Royce & Associates LP | 0.04% | Reduce -10.2% | 611,019 | $3.7M |
| Legato Capital Management LLC | 0.31% | Add +13.4% | 580,545 | $3.5M |
| New York State Common Retirement Fund | 0.00% | No change | 570,561 | $3.5M |
| D. E. Shaw & Co. | 0.00% | Add +11.0% | 554,571 | $3.4M |
| LSV Asset Management | 0.01% | Add +28.8% | 538,630 | $3.3M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Add +7.0% | 496,166 | $3.0M |
| Morgan Stanley | 0.00% | Reduce -24.7% | 494,456 | $3.0M |
| Millennium Management | 0.00% | Add +90.9% | 489,310 | $3.0M |
| Uniplan Investment Counsel, Inc. | 0.25% | Reduce -0.2% | 395,897 | $2.4M |
| Renaissance Technologies | 0.00% | Add +22.6% | 378,100 | $2.3M |
| Northern Trust Corp. | 0.00% | Reduce -4.3% | 375,847 | $2.3M |
| Denali Advisors LLC | 0.25% | Add +0.4% | 361,800 | $2.2M |
| Victory Capital Management Inc. | 0.00% | Reduce -5.0% | 339,944 | $2.1M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -9.3% | 316,701 | $1.9M |
| Acadian Asset Management LLC | 0.00% | Add +244.2% | 294,189 | $1.8M |
| Segall Bryant & Hamill, LLC | 0.02% | Reduce -2.4% | 274,008 | $1.7M |
| Bank of New York Mellon Corp | 0.00% | Reduce -6.0% | 254,168 | $1.6M |
| Macquarie Group Ltd. | 0.01% | Reduce -13.8% | 244,853 | $1.5M |
| Nomura Asset Management International Inc. | 0.00% | — | 244,853 | $1.5M |
| State Board of Administration of Florida Retirement System | 0.00% | Add +103.1% | 238,975 | $1.5M |
| State of Wisconsin Investment Board | 0.00% | Add +0.0% | 215,316 | $1.3M |
| Ameriprise Financial Inc. | 0.00% | Add +14.8% | 198,010 | $1.2M |
| Bridgeway Capital Management, LLC | 0.03% | Reduce -9.2% | 197,868 | $1.2M |
| Janus Henderson Group PLC | 0.00% | Reduce -34.7% | 188,717 | $1.2M |
| JPMorgan Chase & Co. | 0.00% | Reduce -12.4% | 184,966 | $1.1M |
| Brandywine Global Investment Management, LLC | 0.01% | Reduce -3.6% | 175,030 | $1.1M |
| Qube Research & Technologies Ltd | 0.00% | Add +256.9% | 164,835 | $1.0M |
| First Trust Advisors LP | 0.00% | Add +2.2% | 154,944 | $947K |
| Federated Hermes, Inc. | 0.00% | Reduce -60.0% | 139,510 | $852K |
| Wellington Management Group LLP | 0.00% | Reduce -10.6% | 127,969 | $782K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | No change | 127,829 | $781K |
| SummerHaven Investment Management, LLC | 0.43% | No change | 122,709 | $750K |
| Jane Street Group, LLC | 0.00% | Add +11.3% | 120,858 | $738K |
| Invesco Ltd. | 0.00% | Add +7.8% | 113,437 | $693K |
| Integrated Quantitative Investments LLC | 0.14% | New | 104,645 | $639K |
| Nuveen, LLC | 0.00% | No change | 100,098 | $612K |
| WINTON GROUP Ltd | 0.02% | Reduce -7.8% | 97,377 | $595K |
| Prudential Financial Inc. | 0.00% | Add +16.2% | 96,892 | $592K |
| KLP Kapitalforvaltning As | 0.00% | Add +9.8% | 96,200 | $588K |
| Martingale Asset Management L P | 0.01% | Reduce -12.7% | 92,260 | $564K |
| STRS Ohio | 0.00% | Add +35.7% | 90,100 | $551K |
| Point Nemo Capital, LLC | 0.52% | — | 85,553 | $523K |
| Swiss National Bank | 0.00% | No change | 83,900 | $513K |
| State of Wyoming | 0.06% | Add +41.7% | 82,949 | $507K |
| Aviva PLC | 0.00% | Add +41.8% | 78,893 | $482K |
| Barclays PLC | 0.00% | Add +6.5% | 77,325 | $472K |
| Canada Pension Plan Investment Board | 0.00% | New | 75,000 | $458K |
| Creative Planning | 0.00% | Add +26.9% | 72,281 | $442K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +9.1% | 65,942 | $439K |
| Precision Wealth Strategies, LLC | 0.13% | New | 67,794 | $414K |
| Principal Financial Group Inc. | 0.00% | Add +45.0% | 63,782 | $390K |
| Alliancebernstein L.P. | 0.00% | No change | 63,710 | $389K |
| Los Angeles Capital Management LLC | 0.00% | Add +2.4% | 46,553 | $387K |
| Franklin Resources Inc. | 0.00% | Reduce -25.1% | 60,132 | $367K |
| Trexquant Investment LP | 0.00% | Add +27.1% | 57,597 | $352K |
| Man Group plc | 0.00% | Add +21.9% | 57,544 | $352K |
| Campbell & CO Investment Adviser LLC | 0.02% | Reduce -33.3% | 55,648 | $340K |
| ExodusPoint Capital Management, LP | 0.00% | Add +64.2% | 54,014 | $330K |
| Rhumbline Advisers | 0.00% | Reduce -16.6% | 53,635 | $328K |
| James Investment Research, Inc. | 0.04% | No change | 53,546 | $327K |
| Vestcor Inc | 0.01% | Add +265.1% | 53,317 | $326K |
| Alps Advisors Inc. | 0.00% | Add +1.1% | 51,688 | $316K |
| Strategic Blueprint, LLC | 0.02% | New | 51,100 | $312K |
| DGS Capital Management, LLC | 0.05% | Add +51.4% | 50,370 | $308K |
| Brooklyn Investment Group | 0.01% | New | 49,189 | $307K |
| DAVENPORT & Co LLC | 0.00% | New | 50,000 | $306K |
| O'shaughnessy Asset Management, LLC | 0.00% | Add +10.8% | 49,657 | $303K |
| Lazard Asset Management LLC | 0.00% | Add +195.6% | 47,766 | $292K |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.4% | 46,344 | $284K |
| Wells Fargo & Company | 0.00% | Add +46.7% | 45,154 | $276K |
| Legal & General Group Plc | 0.00% | Reduce -15.5% | 44,866 | $274K |
| Schonfeld Strategic Advisors LLC | 0.00% | Add +217.3% | 44,754 | $273K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 0.00% | New | 43,922 | $268K |
| HSBC Holdings PLC | 0.00% | Add +33.8% | 42,011 | $257K |
| Cresset Asset Management, LLC | 0.00% | No change | 40,690 | $249K |
| State of Tennessee, Department of Treasury | 0.00% | Add +56.6% | 36,398 | $244K |
| Exchange Traded Concepts, LLC | 0.00% | Add +26.9% | 39,888 | $244K |
| California State Teachers Retirement System | 0.00% | Reduce -2.1% | 39,445 | $241K |
| Russell Investments Group, Ltd. | 0.00% | Add +27.3% | 35,255 | $215K |
| Oxford Asset Management LLP | 0.08% | New | 34,786 | $213K |
| Deutsche Bank AG | 0.00% | Add +5.4% | 31,512 | $193K |
| Linden Thomas Advisory Services, LLC | 0.02% | Reduce -0.3% | 28,465 | $174K |
| Washington Growth Strategies LLC | 0.10% | No change | 26,216 | $160K |
| Cambria Investment Management, L.P. | 0.01% | Add +18.3% | 25,898 | $158K |
"% of holder's portfolio" is SIGA's weight in each manager's 13F, not the share of Siga Technologies Inc. the manager owns.