AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 135 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2018. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2019 | $5,526,000 | +2.4% | 261,771 | -0.8% | 0.34% | +1.5% |
| Q1 2019 | $5,394,000 | -18.7% | 264,004 | -20.8% | 0.34% | -17.2% |
| Q4 2018 | $6,636,000 | -2.1% | 333,483 | -5.3% | 0.41% | +28.8% |
| Q3 2018 | $6,776,000 | +13.2% | 352,170 | -10.2% | 0.32% | +12.5% |
| Q2 2018 | $5,986,000 | +22.0% | 392,296 | +49.9% | 0.28% | +16.6% |
| Q1 2018 | $4,907,000 | – | 261,692 | – | 0.24% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EAM Investors, LLC | 173,018 | $3,187,000 | 0.42% |
| GLOBEFLEX CAPITAL L P | 50,686 | $934,000 | 0.23% |
| KALMAR INVESTMENTS INC /DE/ | 240,648 | $4,433,000 | 0.23% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 63,661 | $1,173,000 | 0.19% |
| OBERWEIS ASSET MANAGEMENT INC/ | 27,200 | $501,000 | 0.15% |
| Invictus RG | 11,950 | $220,000 | 0.15% |
| ACADIAN ASSET MANAGEMENT LLC | 1,502,151 | $27,668,000 | 0.13% |
| FOX RUN MANAGEMENT, L.L.C. | 12,600 | $232,000 | 0.12% |
| Piermont Capital Management Inc. | 26,153 | $482,000 | 0.11% |
| FEDERATED HERMES, INC. | 1,344,684 | $24,769,000 | 0.07% |