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 | ||||
|---|---|---|---|---|---|---|
| Q2 2024 | $2,053 | -14.2% | 51,315 | -5.9% | 0.01% | -22.2% |
| Q1 2024 | $2,394 | +214.6% | 54,531 | +343.5% | 0.02% | +260.0% |
| Q4 2023 | $761 | +238.2% | 12,296 | +151.7% | 0.01% | +150.0% |
| Q3 2023 | $225 | -79.8% | 4,886 | -74.8% | 0.00% | -77.8% |
| Q2 2023 | $1,114 | +173.7% | 19,381 | +33.5% | 0.01% | +50.0% |
| Q4 2022 | $407 | -99.9% | 14,515 | +14.0% | 0.01% | -14.3% |
| Q2 2020 | $286,000 | – | 12,732 | – | 0.01% | – |
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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% |