AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 167 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,091 | -23.3% | 23,727 | -4.2% | 0.01% | -17.6% |
| Q2 2023 | $1,422 | +46.9% | 24,759 | -4.1% | 0.02% | +54.5% |
| Q1 2023 | $968 | +32.1% | 25,815 | -1.3% | 0.01% | +22.2% |
| Q4 2022 | $733 | -99.9% | 26,168 | -1.1% | 0.01% | -10.0% |
| Q3 2022 | $743,000 | -24.9% | 26,469 | -6.9% | 0.01% | -16.7% |
| Q2 2022 | $989,000 | +7.5% | 28,438 | +11.0% | 0.01% | +20.0% |
| Q1 2022 | $920,000 | +51.8% | 25,628 | -1.6% | 0.01% | +66.7% |
| Q4 2021 | $606,000 | +18.4% | 26,053 | -3.4% | 0.01% | +20.0% |
| Q3 2021 | $512,000 | +0.2% | 26,978 | +6.3% | 0.01% | 0.0% |
| Q2 2021 | $511,000 | +12.8% | 25,378 | +2.5% | 0.01% | 0.0% |
| Q1 2021 | $453,000 | -20.8% | 24,765 | -13.0% | 0.01% | -16.7% |
| Q4 2020 | $572,000 | -10.8% | 28,465 | -16.8% | 0.01% | -25.0% |
| Q3 2020 | $641,000 | -10.2% | 34,205 | +7.5% | 0.01% | -11.1% |
| Q2 2020 | $714,000 | +51.6% | 31,805 | +0.1% | 0.01% | +28.6% |
| Q1 2020 | $471,000 | -5.6% | 31,785 | +22.9% | 0.01% | 0.0% |
| Q4 2019 | $499,000 | -5.0% | 25,870 | -2.3% | 0.01% | 0.0% |
| Q3 2019 | $525,000 | +107.5% | 26,485 | +120.8% | 0.01% | +75.0% |
| Q2 2019 | $253,000 | +6.8% | 11,993 | +3.0% | 0.00% | 0.0% |
| Q1 2019 | $237,000 | +3.0% | 11,647 | +0.6% | 0.00% | 0.0% |
| Q4 2018 | $230,000 | +1.3% | 11,577 | -2.2% | 0.00% | 0.0% |
| Q3 2018 | $227,000 | +26.8% | 11,832 | +0.9% | 0.00% | +33.3% |
| Q2 2018 | $179,000 | -16.0% | 11,732 | +3.0% | 0.00% | -25.0% |
| Q1 2018 | $213,000 | +57.8% | 11,392 | +61.5% | 0.00% | +33.3% |
| Q4 2017 | $135,000 | +7.1% | 7,052 | 0.0% | 0.00% | -50.0% |
| Q3 2017 | $126,000 | +0.8% | 7,052 | 0.0% | 0.01% | -33.3% |
| Q2 2017 | $125,000 | +119.3% | 7,052 | +77.2% | 0.01% | +125.0% |
| Q1 2017 | $57,000 | -19.7% | 3,980 | +2.1% | 0.00% | -42.9% |
| Q4 2016 | $71,000 | – | 3,900 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $3,649,605 | 3.75% |
| SHAKER INVESTMENTS LLC/OH | 81,287 | $2,277,662 | 1.41% |
| Mesirow Institutional Investment Management, Inc. | 374,414 | $10,491,080 | 1.38% |
| OBERWEIS ASSET MANAGEMENT INC/ | 134,000 | $3,754,680 | 0.80% |
| Portolan Capital Management | 270,791 | $7,587,564 | 0.75% |
| Hillsdale Investment Management Inc. | 172,238 | $4,826,109 | 0.41% |
| Capital Impact Advisors, LLC | 14,669 | $411,025 | 0.40% |
| Watershed Asset Management, L.L.C. | 9,555 | $267,731 | 0.34% |
| Quantedge Capital Pte Ltd | 35,153 | $984,987 | 0.33% |
| FEDERATED HERMES, INC. | 3,284,217 | $92,023,760 | 0.25% |