GREAT LAKES ADVISORS, LLC's ownership history for PTEN

GREAT LAKES ADVISORS, LLC currently holds 321.9K shares with a market value of $3.5M. It started holding PTEN on 2025-12-31. At its peak, it held 321.9K shares on 2026-03-31. Its highest holding value was $3.5M on 2026-03-31. At its lowest, it held 27.8K shares on 2025-12-31, with a value of $169.7K on 2025-12-31.