AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,673,530 | -6.3% | 36,389 | +17.0% | 0.91% | +14.8% |
| Q2 2023 | $1,786,685 | +645.7% | 31,089 | +386.6% | 0.80% | +745.7% |
| Q1 2023 | $239,588 | -75.7% | 6,389 | -81.8% | 0.09% | -71.5% |
| Q4 2022 | $984,987 | -67.0% | 35,153 | -66.9% | 0.33% | -64.1% |
| Q3 2022 | $2,984,000 | -29.4% | 106,200 | -12.6% | 0.92% | +8.0% |
| Q2 2022 | $4,227,000 | +278.8% | 121,500 | +290.7% | 0.85% | +158.2% |
| Q1 2022 | $1,116,000 | – | 31,100 | – | 0.33% | – |
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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% |