AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 94 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2016. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $620,000 | +65.3% | 33,839 | -4.9% | 0.00% | -50.0% |
| Q1 2016 | $375,000 | -26.0% | 35,600 | 0.0% | 0.00% | 0.0% |
| Q4 2015 | $507,000 | +3.7% | 35,600 | -14.8% | 0.00% | 0.0% |
| Q3 2015 | $489,000 | -17.4% | 41,800 | +14.8% | 0.00% | 0.0% |
| Q2 2015 | $592,000 | -92.7% | 36,400 | -93.5% | 0.00% | -94.1% |
| Q1 2015 | $8,117,000 | +3821.3% | 561,349 | +3053.6% | 0.03% | +3300.0% |
| Q4 2014 | $207,000 | 0.0% | 17,800 | 0.0% | 0.00% | 0.0% |
| Q3 2014 | $207,000 | – | 17,800 | – | 0.00% | – |
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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% |