29 institutions reported holding $1.3M of INTRUSION INC (INTZ) in SEC 13F filings for 2026-06-30. Largest institutional holders: Potomac Capital Management, Inc. ($481,465), VANGUARD GROUP INC ($247,764), GEODE CAPITAL MANAGEMENT, LLC ($176,757), STATE STREET CORP ($98,878), UBS Group AG ($56,135). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30