AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 167 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $433,962 | -3.9% | 9,436 | +20.1% | 0.00% | 0.0% |
| Q2 2023 | $451,369 | +76.9% | 7,854 | +15.4% | 0.00% | +100.0% |
| Q1 2023 | $255,113 | +16.3% | 6,803 | -13.1% | 0.00% | 0.0% |
| Q4 2022 | $219,425 | +20.6% | 7,831 | +21.2% | 0.00% | 0.0% |
| Q3 2022 | $182,000 | -19.1% | 6,462 | 0.0% | 0.00% | 0.0% |
| Q2 2022 | $225,000 | +16.0% | 6,462 | +19.6% | 0.00% | 0.0% |
| Q1 2022 | $194,000 | +24.4% | 5,401 | -19.5% | 0.00% | 0.0% |
| Q4 2021 | $156,000 | +132.8% | 6,710 | +89.1% | 0.00% | – |
| Q3 2021 | $67,000 | -6.9% | 3,549 | 0.0% | 0.00% | – |
| Q2 2021 | $72,000 | -26.5% | 3,549 | -33.5% | 0.00% | -100.0% |
| Q1 2021 | $98,000 | -8.4% | 5,340 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $107,000 | +7.0% | 5,340 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $100,000 | -16.7% | 5,340 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $120,000 | +233.3% | 5,340 | +121.5% | 0.00% | – |
| Q1 2020 | $36,000 | -23.4% | 2,411 | 0.0% | 0.00% | – |
| Q4 2019 | $47,000 | -2.1% | 2,411 | 0.0% | 0.00% | – |
| Q3 2019 | $48,000 | -5.9% | 2,411 | 0.0% | 0.00% | – |
| Q2 2019 | $51,000 | +4.1% | 2,411 | 0.0% | 0.00% | – |
| Q1 2019 | $49,000 | -22.2% | 2,411 | -24.4% | 0.00% | -100.0% |
| Q4 2018 | $63,000 | +3.3% | 3,188 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $61,000 | +24.5% | 3,188 | 0.0% | 0.00% | – |
| Q2 2018 | $49,000 | -18.3% | 3,188 | 0.0% | 0.00% | -100.0% |
| Q1 2018 | $60,000 | -1.6% | 3,188 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $61,000 | +64.9% | 3,188 | +53.0% | 0.00% | – |
| Q3 2017 | $37,000 | 0.0% | 2,083 | 0.0% | 0.00% | – |
| Q2 2017 | $37,000 | +23.3% | 2,083 | 0.0% | 0.00% | – |
| Q1 2017 | $30,000 | -21.1% | 2,083 | 0.0% | 0.00% | – |
| Q4 2016 | $38,000 | -5.0% | 2,083 | 0.0% | 0.00% | – |
| Q3 2016 | $40,000 | +42.9% | 2,083 | +19.2% | 0.00% | – |
| Q2 2016 | $28,000 | +33.3% | 1,748 | 0.0% | 0.00% | – |
| Q1 2016 | $21,000 | -16.0% | 1,748 | 0.0% | 0.00% | – |
| Q4 2015 | $25,000 | +316.7% | 1,748 | +268.8% | 0.00% | – |
| Q3 2015 | $6,000 | – | 474 | – | 0.00% | – |
Download | ||||||
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% |