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 | $9,210,739 | +21.8% | 200,277 | +52.2% | 0.01% | +16.7% |
| Q2 2023 | $7,563,569 | +66.2% | 131,609 | +8.9% | 0.01% | +50.0% |
| Q1 2023 | $4,551,327 | +318.6% | 120,821 | +211.4% | 0.00% | +300.0% |
| Q4 2022 | $1,087,176 | -30.9% | 38,800 | -30.7% | 0.00% | 0.0% |
| Q3 2022 | $1,573,000 | -0.2% | 55,980 | +23.6% | 0.00% | 0.0% |
| Q2 2022 | $1,576,000 | -43.9% | 45,293 | -42.1% | 0.00% | -50.0% |
| Q1 2022 | $2,808,000 | +28.9% | 78,230 | -16.3% | 0.00% | +100.0% |
| Q4 2021 | $2,178,000 | +36.0% | 93,512 | +11.0% | 0.00% | 0.0% |
| Q3 2021 | $1,601,000 | -14.9% | 84,221 | -9.7% | 0.00% | 0.0% |
| Q2 2021 | $1,881,000 | +302.8% | 93,288 | +222.0% | 0.00% | 0.0% |
| Q2 2016 | $467,000 | – | 28,967 | – | 0.00% | – |
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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% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 177,321 | $3,516,000 | 0.04% |
| MARTINGALE ASSET MANAGEMENT L P | 214,444 | $4,254,000 | 0.04% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 231,041 | $4,582,000 | 0.04% |