AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 213 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2023. The put-call ratio across all filers is 0.26 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $51,969 | -20.0% | 1,130 | 0.0% | 0.00% | – |
| Q2 2023 | $64,941 | +154521.4% | 1,130 | 0.0% | 0.00% | – |
| Q1 2023 | $42 | +31.2% | 1,130 | 0.0% | 0.00% | – |
| Q4 2022 | $32 | -99.9% | 1,130 | 0.0% | 0.00% | – |
| Q3 2022 | $35,000 | -60.7% | 1,130 | -55.7% | 0.00% | -100.0% |
| Q2 2022 | $89,000 | +18.7% | 2,550 | +22.0% | 0.00% | 0.0% |
| Q1 2022 | $75,000 | -87.7% | 2,090 | -92.1% | 0.00% | -80.0% |
| Q4 2021 | $612,000 | +21.2% | 26,485 | -0.2% | 0.01% | +66.7% |
| Q3 2021 | $505,000 | -22.3% | 26,547 | -17.7% | 0.00% | -25.0% |
| Q2 2021 | $650,000 | +1.4% | 32,264 | -7.7% | 0.00% | 0.0% |
| Q1 2021 | $641,000 | -8.8% | 34,964 | 0.0% | 0.00% | -20.0% |
| Q4 2020 | $703,000 | +115.0% | 34,964 | +100.7% | 0.01% | +66.7% |
| Q3 2020 | $327,000 | -58.1% | 17,422 | -49.9% | 0.00% | -57.1% |
| Q2 2020 | $781,000 | +88.2% | 34,751 | +24.3% | 0.01% | +40.0% |
| Q1 2020 | $415,000 | -23.0% | 27,953 | 0.0% | 0.01% | 0.0% |
| Q4 2019 | $539,000 | +20.6% | 27,953 | +24.1% | 0.01% | +25.0% |
| Q3 2019 | $447,000 | -44.6% | 22,530 | -41.1% | 0.00% | -50.0% |
| Q2 2019 | $807,000 | +3.3% | 38,241 | 0.0% | 0.01% | 0.0% |
| Q1 2019 | $781,000 | +242.5% | 38,241 | +233.4% | 0.01% | +166.7% |
| Q4 2018 | $228,000 | +3.2% | 11,470 | 0.0% | 0.00% | +50.0% |
| Q3 2018 | $221,000 | – | 11,470 | – | 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% |