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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,668,077 | +16.7% | 101,502 | +45.8% | 0.01% | 0.0% |
| Q2 2023 | $4,001,521 | +848.0% | 69,628 | +518.6% | 0.01% | +500.0% |
| Q1 2023 | $422,100 | -2.5% | 11,256 | -27.2% | 0.00% | 0.0% |
| Q4 2022 | $432,993 | -60.6% | 15,453 | -49.6% | 0.00% | -60.0% |
| Q1 2022 | $1,100,000 | +33.8% | 30,634 | -24.8% | 0.01% | +66.7% |
| Q2 2021 | $822,000 | +282.3% | 40,760 | +280.4% | 0.00% | +50.0% |
| Q4 2020 | $215,000 | -38.4% | 10,714 | -42.5% | 0.00% | -60.0% |
| Q3 2020 | $349,000 | -79.3% | 18,635 | -75.2% | 0.01% | -81.5% |
| Q2 2020 | $1,689,000 | +297.4% | 75,188 | +162.5% | 0.03% | +145.5% |
| Q1 2020 | $425,000 | -78.3% | 28,638 | -71.8% | 0.01% | -8.3% |
| Q4 2019 | $1,961,000 | +102.0% | 101,639 | +107.7% | 0.01% | +33.3% |
| Q3 2019 | $971,000 | -16.1% | 48,943 | -10.7% | 0.01% | -18.2% |
| Q2 2019 | $1,157,000 | +161.2% | 54,823 | +153.1% | 0.01% | +120.0% |
| Q1 2019 | $443,000 | -27.6% | 21,662 | -29.6% | 0.01% | -28.6% |
| Q4 2018 | $612,000 | +81.1% | 30,772 | +70.8% | 0.01% | +40.0% |
| Q1 2018 | $338,000 | +26.6% | 18,018 | +28.3% | 0.01% | -72.2% |
| Q3 2016 | $267,000 | – | 14,049 | – | 0.02% | – |
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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% |