AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $2,407,839 | +170.5% | 64,209 | +102.9% | 0.01% | +150.0% |
| Q3 2022 | $890,000 | -10.0% | 31,638 | +11.2% | 0.00% | 0.0% |
| Q2 2022 | $989,000 | +58.2% | 28,441 | +63.3% | 0.00% | +100.0% |
| Q1 2022 | $625,000 | -79.0% | 17,417 | -86.8% | 0.00% | -95.2% |
| Q2 2020 | $2,970,000 | -33.7% | 132,228 | -56.2% | 0.02% | -53.3% |
| Q1 2020 | $4,481,000 | -21.0% | 301,910 | +2.7% | 0.04% | +15.4% |
| Q4 2019 | $5,673,000 | -30.8% | 294,064 | -28.8% | 0.04% | -39.1% |
| Q3 2019 | $8,196,000 | – | 413,293 | – | 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% |