38 institutions reported holding $1.9M of RESEARCH FRONTIERS INC (REFR) in SEC 13F filings for 2026-06-30. Largest institutional holders: MGO ONE SEVEN LLC ($463,633), VANGUARD GROUP INC ($399,772), BlackRock, Inc. ($276,922), Focus Partners Wealth ($258,139), GEODE CAPITAL MANAGEMENT, LLC ($159,088). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30