AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 130 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $1,854,000 | -20.2% | 101,200 | -12.5% | 0.01% | -12.5% |
| Q4 2020 | $2,324,000 | +6.1% | 115,600 | -1.0% | 0.02% | +6.7% |
| Q3 2020 | $2,190,000 | +225.9% | 116,800 | +290.6% | 0.02% | +200.0% |
| Q2 2020 | $672,000 | -80.6% | 29,900 | -83.3% | 0.01% | -79.2% |
| Q4 2019 | $3,463,000 | +5.6% | 179,478 | +8.5% | 0.02% | +20.0% |
| Q3 2019 | $3,279,000 | -14.4% | 165,378 | -8.8% | 0.02% | -23.1% |
| Q2 2019 | $3,829,000 | +189.2% | 181,378 | +179.7% | 0.03% | +160.0% |
| Q1 2019 | $1,324,000 | -19.9% | 64,842 | -21.9% | 0.01% | -23.1% |
| Q4 2018 | $1,653,000 | -58.1% | 83,042 | -59.5% | 0.01% | -56.7% |
| Q3 2018 | $3,946,000 | +10.3% | 205,100 | -12.5% | 0.03% | +20.0% |
| Q2 2018 | $3,578,000 | -16.7% | 234,500 | +2.4% | 0.02% | -7.4% |
| Q1 2018 | $4,294,000 | – | 229,000 | – | 0.03% | – |
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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% |