AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 130 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2020 | $37,000 | -24.5% | 1,948 | -11.0% | 0.00% | -33.3% |
| Q2 2020 | $49,000 | +2.1% | 2,189 | -10.1% | 0.00% | +50.0% |
| Q3 2019 | $48,000 | -61.6% | 2,435 | -59.0% | 0.00% | -66.7% |
| Q2 2019 | $125,000 | -31.7% | 5,935 | -33.6% | 0.01% | -40.0% |
| Q1 2019 | $183,000 | +157.7% | 8,935 | +151.9% | 0.01% | +100.0% |
| Q4 2018 | $71,000 | +115.2% | 3,547 | +102.7% | 0.01% | +150.0% |
| Q1 2018 | $33,000 | -2.9% | 1,750 | -24.8% | 0.00% | -33.3% |
| Q1 2017 | $34,000 | -82.0% | 2,326 | -77.3% | 0.00% | -87.0% |
| Q4 2016 | $189,000 | -64.1% | 10,269 | -63.0% | 0.02% | -58.2% |
| Q3 2016 | $526,000 | +54.7% | 27,718 | +31.5% | 0.06% | +14.6% |
| Q2 2016 | $340,000 | +48.5% | 21,078 | +10.5% | 0.05% | +50.0% |
| Q1 2016 | $229,000 | -39.3% | 19,078 | -27.9% | 0.03% | -44.8% |
| Q4 2015 | $377,000 | +53.3% | 26,478 | +25.6% | 0.06% | +61.1% |
| Q3 2015 | $246,000 | – | 21,078 | – | 0.04% | – |
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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% |