AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $7,013,475 | -17.4% | 152,500 | +3.2% | 0.74% | -27.8% |
| Q2 2023 | $8,494,066 | +27.1% | 147,800 | -17.1% | 1.03% | -0.5% |
| Q1 2023 | $6,682,500 | +78.0% | 178,200 | +33.0% | 1.04% | +29.9% |
| Q4 2022 | $3,754,680 | +31.7% | 134,000 | +32.0% | 0.80% | +19.6% |
| Q3 2022 | $2,852,000 | +357.8% | 101,500 | +467.0% | 0.67% | +322.2% |
| Q2 2022 | $623,000 | +28.5% | 17,900 | +32.6% | 0.16% | +62.9% |
| Q1 2022 | $485,000 | +54.5% | 13,500 | 0.0% | 0.10% | +70.2% |
| Q4 2021 | $314,000 | +55.4% | 13,500 | +27.4% | 0.06% | +35.7% |
| Q3 2021 | $202,000 | -5.6% | 10,600 | 0.0% | 0.04% | -10.6% |
| Q2 2021 | $214,000 | -57.3% | 10,600 | -61.0% | 0.05% | -68.7% |
| Q4 2016 | $501,000 | -2.9% | 27,200 | 0.0% | 0.15% | +0.7% |
| Q3 2016 | $516,000 | +17.8% | 27,200 | 0.0% | 0.15% | +14.6% |
| Q2 2016 | $438,000 | – | 27,200 | – | 0.13% | – |
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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% |