193 institutions reported holding $128.5M of S I G A TECHNOLOGIES (SIGA) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($15.2M), DIMENSIONAL FUND ADVISORS LP ($9.9M), VANGUARD GROUP INC ($9.5M), AltraVue Capital, LLC ($8.5M), AMERICAN CENTURY COMPANIES INC ($5.5M). Source: SEC Form 13F.
来源:SEC 13F 申报文件 · 截至 2026-06-30