Riverstone Advisors, LLC's ownership history for PH

Riverstone Advisors, LLC currently holds 657 shares with a market value of $577.2K. It started holding PH on 2024-09-30. At its peak, it held 657 shares on 2025-12-31. Its highest holding value was $577.2K on 2025-12-31. At its lowest, it held 338 shares on 2025-06-30, with a value of $223.6K on 2025-03-31. In the recent 180 days, Riverstone Advisors, LLC has increased its shares by 319. In the recent year, Riverstone Advisors, LLC has increased its shares by 273.