AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 145 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $22,643 | +503.8% | 394 | +294.0% | 0.00% | – |
| Q1 2023 | $3,750 | -97.2% | 100 | -97.4% | 0.00% | – |
| Q2 2022 | $133,000 | +47.8% | 3,826 | +53.0% | 0.00% | – |
| Q1 2022 | $90,000 | +4400.0% | 2,500 | +2400.0% | 0.00% | – |
| Q2 2021 | $2,000 | -85.7% | 100 | -87.5% | 0.00% | – |
| Q2 2017 | $14,000 | -39.1% | 801 | -50.0% | 0.00% | – |
| Q1 2017 | $23,000 | -4.2% | 1,601 | +23.1% | 0.00% | – |
| Q4 2016 | $24,000 | – | 1,301 | – | 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% |