AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 213 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2023. The put-call ratio across all filers is 0.26 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $1,321,238 | +14.9% | 35,233 | -14.2% | 0.23% | +17.1% |
| Q4 2022 | $1,150,109 | -0.3% | 41,046 | 0.0% | 0.20% | -8.7% |
| Q3 2022 | $1,153,000 | +10.1% | 41,046 | +36.3% | 0.22% | +19.8% |
| Q2 2022 | $1,047,000 | -37.9% | 30,107 | -35.9% | 0.18% | -3.7% |
| Q1 2022 | $1,687,000 | +22.8% | 46,995 | -20.3% | 0.19% | -5.0% |
| Q4 2021 | $1,374,000 | +25.4% | 58,975 | +2.3% | 0.20% | +59.2% |
| Q3 2021 | $1,096,000 | -16.3% | 57,649 | -11.2% | 0.12% | -13.8% |
| Q2 2021 | $1,309,000 | +30.5% | 64,924 | +18.6% | 0.14% | +29.5% |
| Q1 2021 | $1,003,000 | +157.2% | 54,751 | +163.4% | 0.11% | +103.6% |
| Q3 2020 | $390,000 | – | 20,790 | – | 0.06% | – |
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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% |