AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $774 | -73.8% | 16,820 | -67.3% | 0.04% | -72.1% |
| Q2 2023 | $2,953 | +159.7% | 51,380 | +69.5% | 0.13% | +138.9% |
| Q1 2023 | $1,137 | +369.8% | 30,320 | +250.4% | 0.05% | +315.4% |
| Q4 2022 | $242 | -100.0% | 8,653 | -75.6% | 0.01% | -78.3% |
| Q3 2022 | $998,000 | -6.6% | 35,523 | +15.6% | 0.06% | -25.0% |
| Q2 2022 | $1,069,000 | +109.2% | 30,733 | +115.8% | 0.08% | +142.4% |
| Q1 2022 | $511,000 | -15.3% | 14,243 | -55.2% | 0.03% | -81.0% |
| Q3 2016 | $603,000 | – | 31,761 | – | 0.17% | – |
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% |