Amphastar Pharmaceuticals shares owned by Quantbot Technologies
Quarter-by-quarter ownership of Amphastar Pharmaceuticals (AMPH) shares owned by Quantbot Technologies
from 13F filings
Historical chart of Quantbot Technologies investment in Amphastar Pharmaceuticals
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Quarterly reported holdings in Amphastar Pharmaceuticals by Quantbot Technologies
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $793k | 30k | 26.65 |
| 2025-06-30 | $1.4M | 61k | 22.96 |
| 2025-03-31 | $612k | 21k | 28.99 |
| 2024-12-31 | $945k | 26k | 37.13 |
| 2024-06-30 | $497k | 12k | 40.00 |
| 2024-03-31 | $481k | 11k | 43.91 |
| 2022-03-31 | $21k | 600 | 35.00 |
| 2021-03-31 | $53k | 2.9k | 18.28 |
| 2020-12-31 | $6.0k | 300 | 20.00 |
| 2019-09-30 | $89k | 4.5k | 19.78 |
| 2019-06-30 | $122k | 5.8k | 21.03 |
| 2016-12-31 | $2.0k | 127 | 15.75 |
| 2016-09-30 | $139k | 7.4k | 18.89 |
| 2015-06-30 | $22k | 1.3k | 16.92 |