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 | ||||
|---|---|---|---|---|---|---|
| Q2 2022 | $2,395,000 | -46.5% | 68,855 | -44.8% | 0.58% | -29.9% |
| Q1 2022 | $4,477,000 | +84.0% | 124,697 | +2.0% | 0.83% | +26.2% |
| Q4 2018 | $2,433,000 | -23.7% | 122,250 | -29.3% | 0.66% | +55.9% |
| Q4 2016 | $3,187,000 | -13.1% | 173,018 | -10.5% | 0.42% | -14.0% |
| Q3 2016 | $3,668,000 | -7.8% | 193,355 | -21.7% | 0.49% | -17.6% |
| Q2 2016 | $3,978,000 | +231.8% | 246,805 | +261.8% | 0.60% | +327.1% |
| Q2 2015 | $1,199,000 | – | 68,224 | – | 0.14% | – |
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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% |