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 | $2,667 | -99.9% | 58 | -100.0% | 0.00% | -100.0% |
| Q2 2018 | $1,991,000 | -48.6% | 130,468 | -36.9% | 0.00% | -40.0% |
| Q1 2018 | $3,874,000 | -12.2% | 206,601 | -9.9% | 0.01% | -16.7% |
| Q4 2017 | $4,411,000 | +16.3% | 229,277 | +8.1% | 0.01% | +20.0% |
| Q3 2017 | $3,792,000 | +8.6% | 212,183 | +8.5% | 0.01% | 0.0% |
| Q2 2017 | $3,492,000 | +59.5% | 195,547 | +29.5% | 0.01% | +25.0% |
| Q1 2017 | $2,190,000 | +19.7% | 151,055 | +52.1% | 0.00% | +33.3% |
| Q4 2016 | $1,830,000 | -51.2% | 99,324 | -49.7% | 0.00% | -57.1% |
| Q3 2016 | $3,750,000 | -11.6% | 197,658 | -21.0% | 0.01% | -12.5% |
| Q2 2016 | $4,241,000 | +20.6% | 250,331 | -9.5% | 0.01% | +14.3% |
| Q1 2016 | $3,517,000 | -10.6% | 276,472 | 0.0% | 0.01% | -12.5% |
| Q4 2015 | $3,934,000 | +45.2% | 276,472 | +19.2% | 0.01% | +33.3% |
| Q3 2015 | $2,710,000 | – | 231,862 | – | 0.01% | – |
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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% |