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 | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $588,435 | -72.2% | 10,239 | -81.9% | 0.02% | -74.1% |
| Q1 2023 | $2,118,900 | +109.0% | 56,504 | +56.2% | 0.06% | +100.0% |
| Q4 2022 | $1,013,904 | +36.3% | 36,185 | +36.6% | 0.03% | +11.5% |
| Q3 2022 | $744,000 | -31.8% | 26,482 | -15.6% | 0.03% | -46.9% |
| Q2 2022 | $1,091,000 | -16.5% | 31,363 | -13.8% | 0.05% | -19.7% |
| Q1 2022 | $1,307,000 | +329.9% | 36,405 | +179.1% | 0.06% | +221.1% |
| Q4 2021 | $304,000 | +32.8% | 13,042 | +4.3% | 0.02% | -9.5% |
| Q1 2021 | $229,000 | -57.5% | 12,503 | -47.9% | 0.02% | -43.2% |
| Q2 2020 | $539,000 | +36.8% | 23,980 | +20.8% | 0.04% | +8.8% |
| Q3 2019 | $394,000 | +64.2% | 19,853 | +68.9% | 0.03% | +100.0% |
| Q1 2019 | $240,000 | +57.9% | 11,754 | +12.0% | 0.02% | -10.5% |
| Q1 2017 | $152,000 | -22.8% | 10,493 | -1.6% | 0.02% | -38.7% |
| Q4 2016 | $197,000 | -51.8% | 10,669 | -68.7% | 0.03% | -35.4% |
| Q1 2016 | $409,000 | -11.1% | 34,093 | +5.6% | 0.05% | +17.1% |
| Q4 2015 | $460,000 | -43.8% | 32,300 | -30.7% | 0.04% | -55.4% |
| Q2 2015 | $819,000 | – | 46,614 | – | 0.09% | – |
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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% |