AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,267 | -19.9% | 27,541 | +0.0% | 0.00% | -25.0% |
| Q2 2023 | $1,582 | +61.1% | 27,534 | +5.2% | 0.00% | +100.0% |
| Q1 2023 | $982 | +23.5% | 26,174 | -7.8% | 0.00% | 0.0% |
| Q4 2022 | $795 | -99.9% | 28,387 | 0.0% | 0.00% | 0.0% |
| Q3 2022 | $798,000 | -18.6% | 28,387 | +0.8% | 0.00% | 0.0% |
| Q2 2022 | $980,000 | +27.3% | 28,161 | +31.2% | 0.00% | 0.0% |
| Q1 2022 | $770,000 | +61.8% | 21,459 | +5.1% | 0.00% | +100.0% |
| Q4 2021 | $476,000 | +23.3% | 20,427 | +0.5% | 0.00% | 0.0% |
| Q3 2021 | $386,000 | -5.9% | 20,327 | 0.0% | 0.00% | 0.0% |
| Q2 2021 | $410,000 | +9.6% | 20,327 | -0.5% | 0.00% | 0.0% |
| Q1 2021 | $374,000 | -14.4% | 20,427 | -6.0% | 0.00% | 0.0% |
| Q4 2020 | $437,000 | +7.4% | 21,727 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $407,000 | -22.6% | 21,727 | -7.3% | 0.00% | 0.0% |
| Q2 2020 | $526,000 | +51.1% | 23,427 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $348,000 | -23.0% | 23,427 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $452,000 | +56.4% | 23,427 | +60.5% | 0.00% | 0.0% |
| Q3 2019 | $289,000 | -6.2% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $308,000 | +3.4% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q1 2019 | $298,000 | +2.8% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $290,000 | +3.2% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $281,000 | +26.0% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $223,000 | -18.6% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q1 2018 | $274,000 | -2.5% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $281,000 | +7.7% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q3 2017 | $261,000 | 0.0% | 14,596 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $261,000 | -9.4% | 14,596 | -26.6% | 0.00% | 0.0% |
| Q1 2017 | $288,000 | -21.3% | 19,896 | 0.0% | 0.00% | 0.0% |
| Q4 2016 | $366,000 | +38.6% | 19,896 | +43.2% | 0.00% | 0.0% |
| Q3 2016 | $264,000 | – | 13,896 | – | 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% |