AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 135 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $696,709 | -89.0% | 12,123 | -92.8% | 0.00% | -91.3% |
| Q1 2023 | $6,339,600 | +130317.6% | 169,056 | -2.5% | 0.02% | +27.8% |
| Q4 2022 | $4,861 | -99.9% | 173,479 | +19.5% | 0.02% | +12.5% |
| Q3 2022 | $4,081,000 | -72.0% | 145,216 | -65.3% | 0.02% | -70.4% |
| Q2 2022 | $14,578,000 | -5.0% | 419,017 | -2.0% | 0.05% | +25.6% |
| Q1 2022 | $15,351,000 | +24.9% | 427,605 | -19.0% | 0.04% | +19.4% |
| Q4 2021 | $12,290,000 | +263.6% | 527,678 | +196.8% | 0.04% | +227.3% |
| Q3 2021 | $3,380,000 | -11.8% | 177,803 | -6.4% | 0.01% | -15.4% |
| Q2 2021 | $3,831,000 | +30.5% | 190,017 | +18.6% | 0.01% | +8.3% |
| Q1 2021 | $2,936,000 | +123.8% | 160,247 | +143.1% | 0.01% | -20.0% |
| Q4 2018 | $1,312,000 | – | 65,926 | – | 0.02% | – |
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% |