SIGA Technologies Inc
Ownership
Ownership Structure
Who owns SIGA Technologies Inc (SIGA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 57.2% of the shares are freely tradable; institutional investors hold 49.9%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 5.83 | 4,186,282 | +19.8 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 3.79 | 2,719,568 | +0.6 | 06/30/2026 |
| AltraVue Capital, LLC | 3.24 | 2,327,144 | -4.3 | 06/30/2026 |
| Vanguard Capital Management, LLC | 2.38 | 1,712,701 | -0.1 | 06/30/2026 |
| American Century Companies Inc | 2.10 | 1,506,065 | +14.3 | 06/30/2026 |
| Arrowstreet Capital Limited Partnership | 2.05 | 1,474,817 | -3.4 | 06/30/2026 |
| Geode Capital Management, LLC | 1.97 | 1,417,092 | +7.7 | 06/30/2026 |
| First Wilshire Securities Mgmt Inc (CA) | 1.86 | 1,339,883 | +50.5 | 06/30/2026 |
| AQR Capital Management LLC | 1.73 | 1,245,992 | +2.2 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Avantis US Small Cap Value ETF | 1.92 | 1,380,805 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.