AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $956,362 | -20.6% | 20,795 | -0.7% | 0.53% | -14.2% |
| Q2 2023 | $1,204,111 | -61.0% | 20,952 | -74.5% | 0.61% | -64.4% |
| Q1 2023 | $3,084,488 | +35.4% | 82,253 | +1.2% | 1.72% | +21.9% |
| Q4 2022 | $2,277,662 | +0.8% | 81,287 | +1.1% | 1.41% | -6.7% |
| Q3 2022 | $2,259,000 | +75.0% | 80,399 | +116.6% | 1.52% | +84.8% |
| Q2 2022 | $1,291,000 | +6.4% | 37,117 | +9.8% | 0.82% | +32.9% |
| Q1 2022 | $1,213,000 | – | 33,794 | – | 0.62% | – |
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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% |