AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 136 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2020. The put-call ratio across all filers is 5.39 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,391,309 | +154.6% | 95,484 | +218.2% | 0.01% | +200.0% |
| Q2 2023 | $1,724,675 | +133.7% | 30,010 | +41.6% | 0.00% | +100.0% |
| Q2 2022 | $738,000 | -54.4% | 21,200 | -76.0% | 0.00% | -50.0% |
| Q1 2021 | $1,619,000 | -54.3% | 88,375 | -53.2% | 0.00% | -69.2% |
| Q3 2020 | $3,544,000 | +195.3% | 189,010 | +253.9% | 0.01% | +116.7% |
| Q2 2020 | $1,200,000 | +78.0% | 53,410 | +67.3% | 0.01% | +200.0% |
| Q2 2019 | $674,000 | +30.4% | 31,917 | +22.8% | 0.00% | 0.0% |
| Q4 2018 | $517,000 | -38.3% | 26,000 | -41.8% | 0.00% | -33.3% |
| Q1 2018 | $838,000 | -42.0% | 44,676 | -43.1% | 0.00% | -50.0% |
| Q4 2016 | $1,445,000 | -41.0% | 78,456 | -39.2% | 0.01% | -33.3% |
| Q3 2016 | $2,449,000 | +12.8% | 129,086 | -4.2% | 0.01% | 0.0% |
| Q2 2016 | $2,172,000 | +55.8% | 134,745 | +16.0% | 0.01% | +28.6% |
| Q1 2016 | $1,394,000 | +29.3% | 116,133 | +53.3% | 0.01% | +40.0% |
| Q4 2015 | $1,078,000 | +125.5% | 75,750 | +85.2% | 0.01% | +150.0% |
| Q3 2015 | $478,000 | -87.5% | 40,905 | -81.2% | 0.00% | -88.9% |
| Q2 2015 | $3,826,000 | +193.9% | 217,641 | +150.0% | 0.02% | +200.0% |
| Q1 2015 | $1,302,000 | +183.0% | 87,057 | +119.5% | 0.01% | +100.0% |
| Q4 2014 | $460,000 | – | 39,659 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $4,884,375 | 4.79% |
| SHAKER INVESTMENTS LLC/OH | 82,253 | $3,084,488 | 1.72% |
| Mesirow Institutional Investment Management, Inc. | 325,669 | $12,212,588 | 1.33% |
| Portolan Capital Management | 340,593 | $12,772,238 | 1.22% |
| OBERWEIS ASSET MANAGEMENT INC/ | 178,200 | $6,682,500 | 1.04% |
| Granite Investment Partners, LLC | 536,821 | $20,130,788 | 0.84% |
| Capital Impact Advisors, LLC | 15,304 | $573,900 | 0.70% |
| Hillsdale Investment Management Inc. | 155,038 | $5,813,926 | 0.50% |
| GLOBEFLEX CAPITAL L P | 89,192 | $3,344,700 | 0.41% |
| Jackson Creek Investment Advisors LLC | 25,877 | $970 | 0.41% |