AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 167 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,171,687 | -52.1% | 25,477 | -40.1% | 0.01% | -47.4% |
| Q2 2023 | $2,446,096 | +63.4% | 42,563 | +6.6% | 0.02% | +46.2% |
| Q1 2023 | $1,496,850 | +132364.6% | 39,916 | -1.1% | 0.01% | +30.0% |
| Q4 2022 | $1,130 | -99.9% | 40,346 | +15.8% | 0.01% | 0.0% |
| Q3 2022 | $979,000 | -17.9% | 34,834 | +1.6% | 0.01% | -23.1% |
| Q2 2022 | $1,192,000 | +4.6% | 34,275 | +7.9% | 0.01% | +18.2% |
| Q1 2022 | $1,140,000 | +75.7% | 31,763 | +14.1% | 0.01% | +57.1% |
| Q4 2021 | $649,000 | +21.8% | 27,847 | -0.7% | 0.01% | +16.7% |
| Q3 2021 | $533,000 | -6.0% | 28,042 | -0.4% | 0.01% | 0.0% |
| Q2 2021 | $567,000 | +9.7% | 28,148 | -0.2% | 0.01% | 0.0% |
| Q1 2021 | $517,000 | -9.3% | 28,209 | -0.4% | 0.01% | -25.0% |
| Q4 2020 | $570,000 | +7.1% | 28,335 | -0.1% | 0.01% | -20.0% |
| Q3 2020 | $532,000 | +39.6% | 28,373 | +67.1% | 0.01% | +42.9% |
| Q2 2020 | $381,000 | +48.8% | 16,976 | -1.5% | 0.01% | +16.7% |
| Q1 2020 | $256,000 | +14.3% | 17,240 | +48.4% | 0.01% | +50.0% |
| Q4 2019 | $224,000 | -3.4% | 11,616 | -0.7% | 0.00% | 0.0% |
| Q3 2019 | $232,000 | -9.0% | 11,693 | -3.3% | 0.00% | 0.0% |
| Q2 2019 | $255,000 | +5.4% | 12,089 | +1.9% | 0.00% | 0.0% |
| Q1 2019 | $242,000 | +2.5% | 11,866 | +0.1% | 0.00% | -20.0% |
| Q4 2018 | $236,000 | – | 11,855 | – | 0.01% | – |
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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% |