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 | ||||
|---|---|---|---|---|---|---|
| Q4 2023 | $1,162,533 | +42.7% | 18,796 | +6.1% | 0.53% | +32.7% |
| Q3 2023 | $814,529 | -11.0% | 17,711 | +11.3% | 0.40% | -7.0% |
| Q2 2023 | $914,693 | +13.7% | 15,916 | -25.8% | 0.43% | +8.1% |
| Q1 2023 | $804,488 | +133.3% | 21,453 | +74.3% | 0.40% | +141.5% |
| Q4 2022 | $344,786 | +0.5% | 12,305 | +0.8% | 0.16% | -4.1% |
| Q3 2022 | $343,000 | +69.0% | 12,208 | +109.4% | 0.17% | +71.0% |
| Q2 2022 | $203,000 | – | 5,829 | – | 0.10% | – |
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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% |