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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $58,647,069 | -20.2% | 1,275,214 | -0.3% | 0.34% | -19.4% |
| Q2 2023 | $73,532,553 | +141.6% | 1,279,495 | +57.6% | 0.42% | +137.5% |
| Q1 2023 | $30,438,525 | +217131.8% | 811,694 | +62.3% | 0.18% | +97.8% |
| Q4 2022 | $14,012 | -99.9% | 500,065 | -30.1% | 0.09% | -38.6% |
| Q3 2022 | $20,097,000 | -20.5% | 715,181 | -1.6% | 0.14% | -16.7% |
| Q2 2022 | $25,275,000 | +14.5% | 726,516 | +18.2% | 0.17% | +32.8% |
| Q1 2022 | $22,073,000 | +55.0% | 614,855 | +0.6% | 0.13% | +57.8% |
| Q4 2021 | $14,241,000 | +86.8% | 611,462 | +52.4% | 0.08% | +69.4% |
| Q3 2021 | $7,625,000 | -5.3% | 401,100 | +0.4% | 0.05% | -5.8% |
| Q2 2021 | $8,053,000 | +10.5% | 399,445 | +0.4% | 0.05% | +2.0% |
| Q1 2021 | $7,290,000 | -33.6% | 397,950 | -27.2% | 0.05% | -50.0% |
| Q4 2020 | $10,987,000 | -28.3% | 546,344 | -33.2% | 0.10% | -47.4% |
| Q3 2020 | $15,328,000 | -16.3% | 817,515 | +0.3% | 0.19% | -19.2% |
| Q2 2020 | $18,308,000 | – | 815,129 | – | 0.24% | – |
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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% |