497 institutions reported holding $4.02B of PATTERSON ENERGY INC (PTEN) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($577.2M), VANGUARD GROUP INC ($429.1M), DIMENSIONAL FUND ADVISORS LP ($209.1M), GOLDMAN SACHS GROUP INC ($150.0M), AMERICAN CENTURY COMPANIES INC ($149.1M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30