AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $504 | -16.1% | 10,967 | +4.8% | 0.00% | -25.0% |
| Q2 2023 | $601 | +34.5% | 10,460 | -12.2% | 0.00% | +33.3% |
| Q1 2023 | $447 | -59.6% | 11,911 | -69.8% | 0.00% | -62.5% |
| Q4 2022 | $1,107 | -99.9% | 39,494 | -19.7% | 0.01% | -20.0% |
| Q3 2022 | $1,381,000 | +456.9% | 49,156 | +590.5% | 0.01% | +400.0% |
| Q2 2022 | $248,000 | -12.7% | 7,119 | -10.1% | 0.00% | +100.0% |
| Q1 2022 | $284,000 | +17.4% | 7,917 | -36.9% | 0.00% | -50.0% |
| Q4 2017 | $242,000 | +195.1% | 12,555 | +148.2% | 0.00% | +100.0% |
| Q2 2016 | $82,000 | +64.0% | 5,059 | +21.7% | 0.00% | – |
| Q1 2016 | $50,000 | +13.6% | 4,158 | +33.0% | 0.00% | – |
| Q4 2015 | $44,000 | -8.3% | 3,126 | -24.1% | 0.00% | – |
| Q3 2015 | $48,000 | +108.7% | 4,120 | +215.7% | 0.00% | – |
| Q2 2015 | $23,000 | – | 1,305 | – | 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% |
| 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% |