344 institutions reported holding $2.67B of ASTRONICS (ATRO) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($248.4M), VANGUARD GROUP INC ($170.1M), STATE STREET CORP ($166.7M), AMERICAN CENTURY COMPANIES INC ($116.7M), UBS Group AG ($108.2M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30