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 2022 | $2,395,000 | -46.5% | 68,855 | -44.8% | 0.58% | -29.9% |
| Q1 2022 | $4,477,000 | +84.0% | 124,697 | +2.0% | 0.83% | +26.2% |
| Q4 2018 | $2,433,000 | -23.7% | 122,250 | -29.3% | 0.66% | +55.9% |
| Q4 2016 | $3,187,000 | -13.1% | 173,018 | -10.5% | 0.42% | -14.0% |
| Q3 2016 | $3,668,000 | -7.8% | 193,355 | -21.7% | 0.49% | -17.6% |
| Q2 2016 | $3,978,000 | +231.8% | 246,805 | +261.8% | 0.60% | +327.1% |
| Q2 2015 | $1,199,000 | – | 68,224 | – | 0.14% | – |
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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% |