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 | ||||
|---|---|---|---|---|---|---|
| Q4 2020 | $274,000 | +6.6% | 13,640 | -0.6% | 0.01% | 0.0% |
| Q3 2020 | $257,000 | -9.5% | 13,718 | +8.3% | 0.01% | -16.7% |
| Q2 2020 | $284,000 | +60.5% | 12,661 | +6.1% | 0.01% | +50.0% |
| Q1 2020 | $177,000 | -23.0% | 11,935 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $230,000 | -0.9% | 11,935 | +2.0% | 0.00% | -20.0% |
| Q3 2019 | $232,000 | -6.8% | 11,706 | -0.7% | 0.01% | 0.0% |
| Q2 2019 | $249,000 | +9.7% | 11,783 | +6.1% | 0.01% | 0.0% |
| Q1 2019 | $227,000 | +6.1% | 11,103 | +3.4% | 0.01% | 0.0% |
| Q4 2018 | $214,000 | +8.1% | 10,737 | +4.5% | 0.01% | +25.0% |
| Q3 2018 | $198,000 | +25.3% | 10,279 | -0.8% | 0.00% | 0.0% |
| Q2 2018 | $158,000 | -14.1% | 10,365 | +5.5% | 0.00% | 0.0% |
| Q1 2018 | $184,000 | +4.0% | 9,821 | +6.7% | 0.00% | 0.0% |
| Q4 2017 | $177,000 | +9.9% | 9,208 | +2.2% | 0.00% | 0.0% |
| Q3 2017 | $161,000 | +2.5% | 9,009 | +2.4% | 0.00% | 0.0% |
| Q2 2017 | $157,000 | +28.7% | 8,798 | +4.8% | 0.00% | +33.3% |
| Q1 2017 | $122,000 | -15.9% | 8,394 | +7.0% | 0.00% | -25.0% |
| Q4 2016 | $145,000 | +18.9% | 7,845 | +21.5% | 0.00% | +33.3% |
| Q3 2016 | $122,000 | – | 6,456 | – | 0.00% | – |
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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% |