AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 167 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,211,304 | -33.5% | 91,570 | -16.9% | 0.05% | -27.8% |
| Q2 2023 | $6,332,389 | +52.0% | 110,186 | -0.8% | 0.07% | +44.0% |
| Q1 2023 | $4,167,113 | +28.2% | 111,123 | -4.2% | 0.05% | +25.0% |
| Q4 2022 | $3,251,077 | +39.0% | 116,027 | +39.4% | 0.04% | +25.0% |
| Q3 2022 | $2,339,000 | +963.2% | 83,250 | +1218.5% | 0.03% | +966.7% |
| Q2 2022 | $220,000 | +15.2% | 6,314 | +18.9% | 0.00% | +50.0% |
| Q1 2022 | $191,000 | +63.2% | 5,309 | +5.5% | 0.00% | +100.0% |
| Q4 2021 | $117,000 | +24.5% | 5,034 | +2.1% | 0.00% | 0.0% |
| Q3 2021 | $94,000 | -10.5% | 4,931 | -5.4% | 0.00% | 0.0% |
| Q2 2021 | $105,000 | +18.0% | 5,215 | +6.8% | 0.00% | 0.0% |
| Q1 2021 | $89,000 | -3.3% | 4,885 | +6.9% | 0.00% | 0.0% |
| Q4 2020 | $92,000 | +10.8% | 4,570 | +3.8% | 0.00% | 0.0% |
| Q3 2020 | $83,000 | +124.3% | 4,401 | +168.2% | 0.00% | 0.0% |
| Q2 2020 | $37,000 | +68.2% | 1,641 | +8.9% | 0.00% | – |
| Q1 2020 | $22,000 | -8.3% | 1,507 | +22.7% | 0.00% | – |
| Q4 2019 | $24,000 | -4.0% | 1,228 | -4.0% | 0.00% | – |
| Q3 2019 | $25,000 | -7.4% | 1,279 | +1.5% | 0.00% | – |
| Q2 2019 | $27,000 | +35.0% | 1,260 | +26.3% | 0.00% | – |
| Q1 2019 | $20,000 | +17.6% | 998 | +15.6% | 0.00% | – |
| Q4 2018 | $17,000 | +30.8% | 863 | +31.2% | 0.00% | – |
| Q3 2018 | $13,000 | +550.0% | 658 | +398.5% | 0.00% | – |
| Q2 2018 | $2,000 | – | 132 | – | 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% |