AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 211 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2022. The put-call ratio across all filers is 0.20 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $1,036,388 | +35.2% | 27,637 | +1.0% | 0.04% | +28.1% |
| Q4 2022 | $766,823 | -19.1% | 27,367 | -18.9% | 0.03% | -23.8% |
| Q3 2022 | $948,000 | -19.7% | 33,747 | -0.6% | 0.04% | -14.3% |
| Q2 2022 | $1,181,000 | -0.8% | 33,946 | +2.3% | 0.05% | -2.0% |
| Q1 2022 | $1,191,000 | +42.5% | 33,179 | -7.5% | 0.05% | +66.7% |
| Q4 2021 | $836,000 | -7.4% | 35,879 | -24.4% | 0.03% | -9.1% |
| Q3 2021 | $903,000 | +32.8% | 47,483 | +40.7% | 0.03% | +43.5% |
| Q2 2021 | $680,000 | – | 33,747 | – | 0.02% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Alambic Investment Management, L.P. | 29,423 | $583,000 | 0.44% |
| Matarin Capital Management, LLC | 223,184 | $4,426,000 | 0.34% |
| Summit Global Investments | 42,725 | $847,000 | 0.10% |
| FEDERATED HERMES, INC. | 1,747,921 | $34,661,000 | 0.08% |
| ROTHSCHILD & CO ASSET MANAGEMENT US INC. | 347,307 | $6,887,000 | 0.08% |
| MARSHALL WACE, LLP | 413,293 | $8,196,000 | 0.06% |
| BOSTON ADVISORS LLC | 42,365 | $840,000 | 0.04% |
| MARTINGALE ASSET MANAGEMENT L P | 214,444 | $4,254,000 | 0.04% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 177,321 | $3,516,000 | 0.04% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 231,041 | $4,582,000 | 0.04% |