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 | $53,578 | -18.4% | 1,165 | +2.0% | 0.00% | 0.0% |
| Q2 2023 | $65,631 | +87408.0% | 1,142 | -42.8% | 0.00% | 0.0% |
| Q1 2023 | $75 | +316.7% | 1,998 | +206.9% | 0.00% | +100.0% |
| Q4 2022 | $18 | -100.0% | 651 | -87.3% | 0.00% | -50.0% |
| Q3 2022 | $144,000 | +97.3% | 5,143 | +145.0% | 0.00% | 0.0% |
| Q2 2022 | $73,000 | -80.3% | 2,099 | -79.6% | 0.00% | -50.0% |
| Q1 2022 | $370,000 | +1380.0% | 10,283 | +846.0% | 0.00% | – |
| Q4 2021 | $25,000 | -70.6% | 1,087 | -75.7% | 0.00% | -100.0% |
| Q3 2021 | $85,000 | +84.8% | 4,467 | +97.5% | 0.00% | +100.0% |
| Q2 2021 | $46,000 | +9.5% | 2,262 | -2.1% | 0.00% | 0.0% |
| Q1 2021 | $42,000 | +100.0% | 2,310 | +122.8% | 0.00% | 0.0% |
| Q4 2020 | $21,000 | -92.1% | 1,037 | -92.7% | 0.00% | -66.7% |
| Q3 2020 | $266,000 | +202.3% | 14,162 | +260.4% | 0.00% | -25.0% |
| Q2 2020 | $88,000 | +780.0% | 3,929 | +678.0% | 0.00% | +300.0% |
| Q1 2019 | $10,000 | -75.0% | 505 | -80.9% | 0.00% | -50.0% |
| Q2 2018 | $40,000 | -20.0% | 2,642 | -0.6% | 0.00% | -50.0% |
| Q1 2018 | $50,000 | -63.2% | 2,658 | -65.1% | 0.00% | -63.6% |
| Q3 2017 | $136,000 | +267.6% | 7,623 | +198.0% | 0.01% | +175.0% |
| Q1 2017 | $37,000 | +37.0% | 2,558 | +75.7% | 0.00% | +33.3% |
| Q4 2016 | $27,000 | +50.0% | 1,456 | +29.7% | 0.00% | +50.0% |
| Q2 2016 | $18,000 | +80.0% | 1,123 | +40.4% | 0.00% | +100.0% |
| Q1 2016 | $10,000 | -80.8% | 800 | -73.0% | 0.00% | -80.0% |
| Q2 2015 | $52,000 | +420.0% | 2,960 | +239.4% | 0.01% | +400.0% |
| Q4 2014 | $10,000 | -81.8% | 872 | -81.7% | 0.00% | -83.3% |
| Q3 2014 | $55,000 | – | 4,760 | – | 0.01% | – |
Download | ||||||
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% |