AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 241 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2023. The put-call ratio across all filers is 0.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $819 | -99.9% | 21,852 | -36.5% | 0.08% | -22.9% |
| Q1 2021 | $631,000 | +25.2% | 34,425 | +4.3% | 0.10% | +320.0% |
| Q2 2018 | $504,000 | +26.0% | 33,000 | +47.3% | 0.02% | -7.4% |
| Q3 2017 | $400,000 | -61.6% | 22,400 | -60.4% | 0.03% | -56.5% |
| Q4 2016 | $1,042,000 | +203.8% | 56,544 | +212.4% | 0.06% | +244.4% |
| Q3 2016 | $343,000 | +109.1% | 18,100 | +57.4% | 0.02% | +125.0% |
| Q4 2015 | $164,000 | +12.3% | 11,500 | -7.9% | 0.01% | +14.3% |
| Q3 2015 | $146,000 | -32.1% | 12,486 | -13.3% | 0.01% | -22.2% |
| Q1 2015 | $215,000 | -38.9% | 14,400 | -52.5% | 0.01% | -64.0% |
| Q4 2014 | $352,000 | – | 30,300 | – | 0.02% | – |
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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% |