367 institutions reported holding $2.20B of MGE (MGEE) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($496.9M), VANGUARD GROUP INC ($392.9M), STATE STREET CORP ($167.1M), GEODE CAPITAL MANAGEMENT, LLC ($82.0M), Zimmer Partners, LP ($81.5M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30