AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 114 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2018. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $11 | +57.1% | 196 | -29.7% | 0.00% | – |
| Q4 2022 | $7 | -100.0% | 279 | -65.1% | 0.00% | – |
| Q3 2021 | $16,000 | 0.0% | 800 | 0.0% | 0.00% | – |
| Q2 2021 | $16,000 | +45.5% | 800 | +27.4% | 0.00% | – |
| Q3 2020 | $11,000 | +450.0% | 628 | +528.0% | 0.00% | – |
| Q2 2020 | $2,000 | -80.0% | 100 | -81.9% | 0.00% | – |
| Q3 2019 | $10,000 | -44.4% | 552 | -35.9% | 0.00% | – |
| Q2 2019 | $18,000 | +80.0% | 861 | +65.9% | 0.00% | – |
| Q4 2018 | $10,000 | +25.0% | 519 | +15.1% | 0.00% | – |
| Q3 2018 | $8,000 | +60.0% | 451 | +19.9% | 0.00% | – |
| Q2 2018 | $5,000 | -85.7% | 376 | -81.0% | 0.00% | -100.0% |
| Q3 2017 | $35,000 | -30.0% | 1,975 | -30.6% | 0.00% | -50.0% |
| Q2 2017 | $50,000 | -81.9% | 2,844 | -80.6% | 0.00% | -89.5% |
| Q3 2016 | $277,000 | – | 14,629 | – | 0.02% | – |
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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% |