Amphastar Pharmaceuticals shares owned by Advisory Research
Quarter-by-quarter ownership of Amphastar Pharmaceuticals (AMPH) shares owned by Advisory Research
from 13F filings
Historical chart of Advisory Research investment in Amphastar Pharmaceuticals
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Quarterly reported holdings in Amphastar Pharmaceuticals by Advisory Research
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $412k | 16k | 26.65 |
| 2025-06-30 | $342k | 15k | 22.96 |
| 2025-03-31 | $403k | 14k | 28.99 |
| 2024-12-31 | $514k | 14k | 37.13 |
| 2024-09-30 | $670k | 14k | 48.53 |
| 2024-06-30 | $571k | 14k | 40.00 |
| 2024-03-31 | $585k | 13k | 43.91 |
| 2023-12-31 | $877k | 14k | 61.85 |
| 2023-09-30 | $685k | 15k | 45.99 |
| 2023-06-30 | $885k | 15k | 57.47 |
| 2023-03-31 | $554k | 15k | 37.50 |
| 2022-09-30 | $426k | 15k | 28.12 |