AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2016. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2017 | $26,000 | -27.8% | 1,451 | -40.8% | 0.02% | -20.0% |
| Q1 2017 | $36,000 | -23.4% | 2,451 | -3.9% | 0.03% | +57.9% |
| Q4 2016 | $47,000 | -56.5% | 2,551 | -55.2% | 0.02% | -73.6% |
| Q3 2016 | $108,000 | -0.9% | 5,691 | -16.2% | 0.07% | -11.1% |
| Q2 2016 | $109,000 | +109.6% | 6,791 | +57.5% | 0.08% | +125.0% |
| Q1 2016 | $52,000 | – | 4,312 | – | 0.04% | – |
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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% |