AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 111 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $35,550 | -42.8% | 773 | -28.5% | 0.00% | – |
| Q2 2023 | $62,125 | -50.7% | 1,081 | -67.8% | 0.00% | – |
| Q1 2023 | $125,926 | +36.2% | 3,358 | +1.8% | 0.00% | – |
| Q4 2022 | $92,466 | +32.1% | 3,300 | +32.4% | 0.00% | – |
| Q3 2022 | $70,000 | 0.0% | 2,492 | +23.2% | 0.00% | – |
| Q2 2022 | $70,000 | +42.9% | 2,023 | +49.5% | 0.00% | – |
| Q1 2022 | $49,000 | +58.1% | 1,353 | +3.3% | 0.00% | – |
| Q4 2021 | $31,000 | +40.9% | 1,310 | +12.8% | 0.00% | – |
| Q3 2021 | $22,000 | -4.3% | 1,161 | 0.0% | 0.00% | – |
| Q2 2021 | $23,000 | +9.5% | 1,161 | 0.0% | 0.00% | – |
| Q1 2021 | $21,000 | -12.5% | 1,161 | -2.6% | 0.00% | – |
| Q4 2020 | $24,000 | +4.3% | 1,192 | 0.0% | 0.00% | – |
| Q3 2020 | $23,000 | -68.9% | 1,192 | -63.8% | 0.00% | – |
| Q2 2020 | $74,000 | +335.3% | 3,294 | +183.7% | 0.00% | – |
| Q1 2020 | $17,000 | -37.0% | 1,161 | -17.0% | 0.00% | – |
| Q4 2019 | $27,000 | +800.0% | 1,398 | +898.6% | 0.00% | – |
| Q1 2019 | $3,000 | -98.1% | 140 | -98.5% | 0.00% | -100.0% |
| Q2 2015 | $159,000 | +12.8% | 9,055 | -3.6% | 0.00% | 0.0% |
| Q1 2015 | $141,000 | +20.5% | 9,395 | -6.6% | 0.00% | – |
| Q4 2014 | $117,000 | – | 10,060 | – | 0.00% | – |
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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% |