Round Rock Advisors, LLC's ownership history for AMPH

Round Rock Advisors, LLC currently holds 8.6K shares with a market value of $212.1K. It started holding AMPH on 2025-09-30. At its peak, it held 8.6K shares on 2025-09-30. Its highest holding value was $212.1K on 2025-09-30. At its lowest, it held 8.6K shares on 2025-09-30, with a value of $212.1K on 2025-09-30.