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 | $4,231 | -20.0% | 92 | 0.0% | 0.00% | 0.0% |
| Q2 2023 | $5,287 | +53.2% | 92 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $3,450 | +33.8% | 92 | 0.0% | 0.00% | – |
| Q4 2022 | $2,578 | -14.1% | 92 | -5.2% | 0.00% | -100.0% |
| Q3 2022 | $3,000 | -25.0% | 97 | -9.3% | 0.00% | 0.0% |
| Q2 2022 | $4,000 | 0.0% | 107 | +9.2% | 0.00% | 0.0% |
| Q1 2022 | $4,000 | +100.0% | 98 | +10.1% | 0.00% | – |
| Q4 2021 | $2,000 | +100.0% | 89 | +56.1% | 0.00% | – |
| Q3 2021 | $1,000 | – | 57 | +375.0% | 0.00% | – |
| Q2 2021 | $0 | – | 12 | -14.3% | 0.00% | – |
| Q4 2019 | $0 | -100.0% | 14 | -72.0% | 0.00% | – |
| Q3 2019 | $1,000 | – | 50 | +316.7% | 0.00% | – |
| Q2 2019 | $0 | – | 12 | – | 0.00% | – |
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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% |