Amphastar Pharmaceuticals shares owned by Acadian Asset Management
Quarter-by-quarter ownership of Amphastar Pharmaceuticals (AMPH) shares owned by Acadian Asset Management
from 13F filings
Historical chart of Acadian Asset Management investment in Amphastar Pharmaceuticals
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Quarterly reported holdings in Amphastar Pharmaceuticals by Acadian Asset Management
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $1.2M | 44k | 26.58 |
| 2024-09-30 | $34k | 718 | 47.35 |
| 2022-12-31 | $668k | 24k | 27.98 |
| 2022-09-30 | $3.0M | 107k | 28.07 |
| 2022-06-30 | $4.5M | 129k | 34.78 |
| 2022-03-31 | $3.9M | 110k | 35.85 |
| 2021-12-31 | $534k | 23k | 23.18 |
| 2021-09-30 | $350k | 19k | 18.92 |
| 2021-06-30 | $2.0M | 99k | 20.15 |
| 2021-03-31 | $231k | 13k | 18.31 |
| 2020-12-31 | $112k | 5.6k | 20.17 |
| 2020-09-30 | $331k | 18k | 18.73 |
| 2020-06-30 | $642k | 29k | 22.42 |
| 2019-12-31 | $98k | 5.1k | 19.31 |
| 2019-09-30 | $788k | 40k | 19.84 |
| 2019-06-30 | $88k | 4.2k | 20.95 |
| 2018-12-31 | $63k | 3.2k | 19.68 |
| 2018-06-30 | $302k | 20k | 15.22 |
| 2018-03-31 | $3.2M | 168k | 18.75 |
| 2017-12-31 | $3.3M | 171k | 19.24 |
| 2017-09-30 | $3.5M | 195k | 17.87 |
| 2017-06-30 | $5.9M | 329k | 17.86 |
| 2017-03-31 | $8.3M | 571k | 14.50 |
| 2016-12-31 | $28M | 1.5M | 18.42 |
| 2016-09-30 | $30M | 1.6M | 18.97 |
| 2016-06-30 | $13M | 819k | 16.12 |
| 2016-03-31 | $5.4M | 452k | 12.00 |
| 2015-12-31 | $4.5M | 316k | 14.23 |
| 2015-09-30 | $340k | 29k | 11.66 |