36 institutions reported holding $12.3M of DATA I O CORP (DAIO) in SEC 13F filings for 2026-06-30. Largest institutional holders: Kanen Wealth Management LLC ($3.3M), RENAISSANCE TECHNOLOGIES LLC ($1.5M), VANGUARD GROUP INC ($1.5M), Penbrook Management LLC ($1.4M), Kovack Advisors, Inc. ($1.1M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30