Amphastar Pharmaceuticals shares owned by Dimensional Fund Advisors
Quarter-by-quarter ownership of Amphastar Pharmaceuticals (AMPH) shares owned by Dimensional Fund Advisors
from 13F filings
Historical chart of Dimensional Fund Advisors investment in Amphastar Pharmaceuticals
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Quarterly reported holdings in Amphastar Pharmaceuticals by Dimensional Fund Advisors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $47M | 1.8M | 26.65 |
| 2025-06-30 | $37M | 1.6M | 22.96 |
| 2025-03-31 | $39M | 1.4M | 28.99 |
| 2024-12-31 | $45M | 1.2M | 37.13 |
| 2024-09-30 | $53M | 1.1M | 48.53 |
| 2024-06-30 | $43M | 1.1M | 40.00 |
| 2024-03-31 | $52M | 1.2M | 43.91 |
| 2023-12-31 | $83M | 1.3M | 61.85 |
| 2023-09-30 | $87M | 1.9M | 45.99 |
| 2023-06-30 | $111M | 1.9M | 57.47 |
| 2023-03-31 | $72M | 1.9M | 37.50 |
| 2022-12-31 | $52M | 1.9M | 28.02 |
| 2022-09-30 | $52M | 1.8M | 28.10 |
| 2022-06-30 | $64M | 1.8M | 34.79 |
| 2022-03-31 | $65M | 1.8M | 35.90 |
| 2021-12-31 | $41M | 1.8M | 23.29 |
| 2021-09-30 | $33M | 1.7M | 19.01 |
| 2021-06-30 | $34M | 1.7M | 20.16 |
| 2021-03-31 | $31M | 1.7M | 18.36 |
| 2020-12-31 | $36M | 1.8M | 20.11 |
| 2020-09-30 | $34M | 1.8M | 18.75 |
| 2020-06-30 | $41M | 1.8M | 22.46 |
| 2020-03-31 | $27M | 1.8M | 14.84 |
| 2019-12-31 | $35M | 1.8M | 19.29 |
| 2019-09-30 | $36M | 1.8M | 19.83 |
| 2019-06-30 | $38M | 1.8M | 21.11 |
| 2019-03-31 | $39M | 1.9M | 20.43 |
| 2018-12-31 | $38M | 1.9M | 19.90 |
| 2018-09-30 | $37M | 1.9M | 19.24 |
| 2018-06-30 | $27M | 1.8M | 15.26 |
| 2018-03-31 | $32M | 1.7M | 18.75 |
| 2017-12-31 | $31M | 1.6M | 19.24 |
| 2017-09-30 | $28M | 1.6M | 17.87 |
| 2017-06-30 | $24M | 1.3M | 17.86 |
| 2017-03-31 | $15M | 1.1M | 14.50 |
| 2016-12-31 | $15M | 801k | 18.42 |
| 2016-09-30 | $9.0M | 477k | 18.97 |
| 2016-06-30 | $5.8M | 361k | 16.12 |
| 2016-03-31 | $3.1M | 258k | 12.00 |
| 2015-12-31 | $970k | 68k | 14.23 |