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 | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $764 | -50.3% | 16,620 | -37.9% | 0.32% | -47.5% |
| Q2 2023 | $1,538 | +58.6% | 26,758 | +3.4% | 0.62% | +51.1% |
| Q1 2023 | $970 | -99.9% | 25,877 | -6.2% | 0.41% | +12.1% |
| Q3 2022 | $775,000 | -28.1% | 27,577 | -4.4% | 0.36% | -16.7% |
| Q2 2022 | $1,078,000 | -39.7% | 28,837 | -42.1% | 0.44% | -33.2% |
| Q1 2022 | $1,788,000 | +160.6% | 49,814 | +36.1% | 0.65% | +110.0% |
| Q3 2020 | $686,000 | – | 36,590 | – | 0.31% | – |
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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% |