479 institutions reported holding $4.16B of MDU RES GROUP INC (MDU) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($580.1M), VANGUARD GROUP INC ($505.5M), BARROW HANLEY MEWHINNEY & STRAUSS LLC ($276.9M), DIMENSIONAL FUND ADVISORS LP ($221.3M), EARNEST PARTNERS LLC ($206.3M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30