AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 276 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2023. The put-call ratio across all filers is 0.66 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,714,323 | -6.9% | 37,276 | -27.3% | 0.07% | -16.5% |
| Q1 2022 | $1,842,000 | +174.5% | 51,304 | +78.1% | 0.08% | +88.1% |
| Q4 2021 | $671,000 | +47.1% | 28,800 | +20.0% | 0.04% | +27.3% |
| Q3 2021 | $456,000 | -40.0% | 24,000 | -36.3% | 0.03% | -54.8% |
| Q2 2021 | $760,000 | – | 37,700 | – | 0.07% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Summit Global Investments | 58,640 | $870,000 | 0.13% |
| FEDERATED HERMES, INC. | 2,600,120 | $38,586,000 | 0.11% |
| ROTHSCHILD & CO ASSET MANAGEMENT US INC. | 284,328 | $4,219,000 | 0.07% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 291,352 | $4,324,000 | 0.05% |
| MARSHALL WACE, LLP | 301,910 | $4,481,000 | 0.04% |
| MARTINGALE ASSET MANAGEMENT L P | 212,817 | $3,159,000 | 0.04% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 171,266 | $2,542,000 | 0.03% |
| WINTON GROUP Ltd | 82,402 | $1,223,000 | 0.03% |
| EAGLE ASSET MANAGEMENT INC | 317,988 | $4,718,000 | 0.03% |
| Engineers Gate Manager LP | 24,007 | $356,000 | 0.03% |