AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 135 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2019. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $36,930 | -21.8% | 803 | -2.3% | 0.00% | -20.0% |
| Q2 2023 | $47,241 | +55.1% | 822 | +1.2% | 0.01% | +66.7% |
| Q1 2023 | $30,450 | +261.0% | 812 | +169.8% | 0.00% | +200.0% |
| Q4 2022 | $8,434 | -23.3% | 301 | -25.5% | 0.00% | 0.0% |
| Q3 2022 | $11,000 | +37.5% | 404 | +78.0% | 0.00% | 0.0% |
| Q2 2022 | $8,000 | -42.9% | 227 | -42.4% | 0.00% | -50.0% |
| Q1 2022 | $14,000 | +133.3% | 394 | +60.8% | 0.00% | +100.0% |
| Q4 2021 | $6,000 | -14.3% | 245 | -31.2% | 0.00% | 0.0% |
| Q3 2021 | $7,000 | +250.0% | 356 | +229.6% | 0.00% | – |
| Q2 2021 | $2,000 | 0.0% | 108 | -8.5% | 0.00% | – |
| Q1 2021 | $2,000 | +100.0% | 118 | +114.5% | 0.00% | – |
| Q4 2020 | $1,000 | 0.0% | 55 | 0.0% | 0.00% | – |
| Q3 2020 | $1,000 | 0.0% | 55 | 0.0% | 0.00% | – |
| Q2 2020 | $1,000 | 0.0% | 55 | 0.0% | 0.00% | – |
| Q1 2020 | $1,000 | -98.1% | 55 | -97.9% | 0.00% | -100.0% |
| Q2 2019 | $54,000 | +1.9% | 2,636 | 0.0% | 0.01% | 0.0% |
| Q1 2019 | $53,000 | – | 2,636 | – | 0.01% | – |
Download | ||||||
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% |