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 | $12,556 | -20.0% | 273 | 0.0% | 0.00% | -25.0% |
| Q2 2023 | $15,690 | +97.3% | 273 | +28.8% | 0.00% | +100.0% |
| Q1 2023 | $7,951 | +50.2% | 212 | +12.2% | 0.00% | 0.0% |
| Q4 2022 | $5,295 | +76.5% | 189 | +61.5% | 0.00% | +100.0% |
| Q3 2022 | $3,000 | -25.0% | 117 | 0.0% | 0.00% | 0.0% |
| Q2 2022 | $4,000 | 0.0% | 117 | 0.0% | 0.00% | 0.0% |
| Q1 2022 | $4,000 | +33.3% | 117 | 0.0% | 0.00% | 0.0% |
| Q4 2021 | $3,000 | – | 117 | +1362.5% | 0.00% | – |
| Q2 2021 | $0 | -100.0% | 8 | -85.2% | 0.00% | – |
| Q4 2020 | $1,000 | 0.0% | 54 | +54.3% | 0.00% | – |
| Q3 2020 | $1,000 | – | 35 | +59.1% | 0.00% | – |
| Q2 2020 | $0 | – | 22 | -8.3% | 0.00% | – |
| Q1 2020 | $0 | -100.0% | 24 | -38.5% | 0.00% | – |
| Q3 2019 | $1,000 | – | 39 | +77.3% | 0.00% | – |
| Q2 2019 | $0 | -100.0% | 22 | -26.7% | 0.00% | – |
| Q1 2019 | $1,000 | 0.0% | 30 | -25.0% | 0.00% | – |
| Q4 2018 | $1,000 | 0.0% | 40 | 0.0% | 0.00% | – |
| Q3 2018 | $1,000 | – | 40 | +37.9% | 0.00% | – |
| Q2 2018 | $0 | -100.0% | 29 | -50.0% | 0.00% | – |
| Q1 2018 | $1,000 | 0.0% | 58 | +100.0% | 0.00% | – |
| Q4 2017 | $1,000 | 0.0% | 29 | 0.0% | 0.00% | – |
| Q3 2017 | $1,000 | 0.0% | 29 | 0.0% | 0.00% | – |
| Q2 2017 | $1,000 | – | 29 | 0.0% | 0.00% | – |
| Q1 2017 | $0 | – | 29 | +26.1% | 0.00% | – |
| Q4 2016 | $0 | – | 23 | – | 0.00% | – |
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% |