Amphastar Pharmaceuticals shares owned by Citadel Advisors
Quarter-by-quarter ownership of Amphastar Pharmaceuticals (AMPH) shares owned by Citadel Advisors
from 13F filings
Historical chart of Citadel Advisors investment in Amphastar Pharmaceuticals
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Quarterly reported holdings in Amphastar Pharmaceuticals by Citadel Advisors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $6.8M | 254k | 26.65 |
| 2025-06-30 | $7.4M | 323k | 22.96 |
| 2025-03-31 | $5.5M | 188k | 28.99 |
| 2024-12-31 | $6.0M | 161k | 37.13 |
| 2024-09-30 | $7.9M | 163k | 48.53 |
| 2024-06-30 | $11M | 275k | 40.00 |
| 2024-03-31 | $4.2M | 95k | 43.91 |
| 2023-12-31 | $8.4M | 136k | 61.85 |
| 2023-09-30 | $6.4M | 140k | 45.99 |
| 2023-06-30 | $11M | 189k | 57.47 |
| 2023-03-31 | $1.5M | 40k | 37.50 |
| 2022-12-31 | $1.5M | 52k | 28.02 |
| 2022-06-30 | $3.0M | 87k | 34.78 |
| 2022-03-31 | $9.4M | 261k | 35.90 |
| 2021-12-31 | $5.0M | 214k | 23.29 |
| 2021-06-30 | $492k | 24k | 20.18 |
| 2021-03-31 | $943k | 51k | 18.33 |
| 2020-12-31 | $1.4M | 70k | 20.10 |
| 2020-09-30 | $1.0M | 54k | 18.75 |
| 2020-06-30 | $1.2M | 54k | 22.47 |
| 2020-03-31 | $1.3M | 86k | 14.84 |
| 2019-09-30 | $2.6M | 132k | 19.83 |
| 2019-06-30 | $1.2M | 57k | 21.11 |
| 2019-03-31 | $509k | 25k | 20.41 |
| 2018-12-31 | $636k | 32k | 19.88 |
| 2018-03-31 | $641k | 34k | 18.75 |
| 2017-06-30 | $1.7M | 93k | 17.86 |
| 2017-03-31 | $5.2M | 356k | 14.50 |
| 2016-12-31 | $341k | 19k | 18.45 |
| 2016-09-30 | $1.3M | 66k | 18.97 |
| 2016-06-30 | $3.5M | 215k | 16.12 |
| 2016-03-31 | $148k | 12k | 11.97 |
| 2015-12-31 | $147k | 10k | 14.22 |
| 2015-03-31 | $870k | 58k | 14.96 |
| 2014-12-31 | $585k | 50k | 11.61 |
| 2014-09-30 | $183k | 16k | 11.66 |