AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 211 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2022. The put-call ratio across all filers is 0.20 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $278,193 | -21.0% | 6,049 | -1.3% | 0.00% | -33.3% |
| Q2 2023 | $352,119 | -20.9% | 6,127 | -48.4% | 0.00% | -25.0% |
| Q1 2023 | $444,975 | -12.6% | 11,866 | -34.7% | 0.00% | 0.0% |
| Q4 2022 | $509,095 | +28.9% | 18,169 | +29.1% | 0.00% | 0.0% |
| Q3 2022 | $395,000 | -25.6% | 14,073 | -7.7% | 0.00% | 0.0% |
| Q2 2022 | $531,000 | -52.5% | 15,244 | -51.1% | 0.00% | -42.9% |
| Q1 2022 | $1,118,000 | +40.5% | 31,155 | -8.9% | 0.01% | +75.0% |
| Q4 2021 | $796,000 | +13.1% | 34,191 | -7.7% | 0.00% | 0.0% |
| Q3 2021 | $704,000 | +306.9% | 37,056 | +208.7% | 0.00% | – |
| Q1 2017 | $173,000 | -87.4% | 12,003 | -83.9% | 0.00% | -100.0% |
| Q4 2016 | $1,377,000 | -47.1% | 74,718 | -45.5% | 0.00% | -50.0% |
| Q3 2016 | $2,603,000 | +104.6% | 137,215 | +74.0% | 0.01% | +100.0% |
| Q2 2016 | $1,272,000 | +8.5% | 78,866 | -19.2% | 0.00% | 0.0% |
| Q1 2016 | $1,172,000 | -11.1% | 97,665 | +5.4% | 0.00% | 0.0% |
| Q4 2015 | $1,319,000 | +2.9% | 92,670 | -15.5% | 0.00% | 0.0% |
| Q3 2015 | $1,282,000 | -36.3% | 109,641 | -4.3% | 0.00% | -20.0% |
| Q2 2015 | $2,014,000 | – | 114,540 | – | 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% |