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 2020 | $37,000 | -24.5% | 1,948 | -11.0% | 0.00% | -33.3% |
| Q2 2020 | $49,000 | +2.1% | 2,189 | -10.1% | 0.00% | +50.0% |
| Q3 2019 | $48,000 | -61.6% | 2,435 | -59.0% | 0.00% | -66.7% |
| Q2 2019 | $125,000 | -31.7% | 5,935 | -33.6% | 0.01% | -40.0% |
| Q1 2019 | $183,000 | +157.7% | 8,935 | +151.9% | 0.01% | +100.0% |
| Q4 2018 | $71,000 | +115.2% | 3,547 | +102.7% | 0.01% | +150.0% |
| Q1 2018 | $33,000 | -2.9% | 1,750 | -24.8% | 0.00% | -33.3% |
| Q1 2017 | $34,000 | -82.0% | 2,326 | -77.3% | 0.00% | -87.0% |
| Q4 2016 | $189,000 | -64.1% | 10,269 | -63.0% | 0.02% | -58.2% |
| Q3 2016 | $526,000 | +54.7% | 27,718 | +31.5% | 0.06% | +14.6% |
| Q2 2016 | $340,000 | +48.5% | 21,078 | +10.5% | 0.05% | +50.0% |
| Q1 2016 | $229,000 | -39.3% | 19,078 | -27.9% | 0.03% | -44.8% |
| Q4 2015 | $377,000 | +53.3% | 26,478 | +25.6% | 0.06% | +61.1% |
| Q3 2015 | $246,000 | – | 21,078 | – | 0.04% | – |
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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% |