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 | ||||
|---|---|---|---|---|---|---|
| Q1 2020 | $157,000 | -23.0% | 10,550 | 0.0% | 0.01% | -28.6% |
| Q4 2019 | $204,000 | -0.5% | 10,550 | +2.0% | 0.01% | -12.5% |
| Q3 2019 | $205,000 | -5.5% | 10,340 | +0.4% | 0.01% | -46.7% |
| Q2 2019 | $217,000 | +4.8% | 10,300 | +1.8% | 0.02% | +7.1% |
| Q1 2019 | $207,000 | +3.0% | 10,120 | 0.0% | 0.01% | +16.7% |
| Q4 2018 | $201,000 | +30.5% | 10,120 | 0.0% | 0.01% | +50.0% |
| Q2 2018 | $154,000 | -41.9% | 10,120 | -28.4% | 0.01% | -38.5% |
| Q1 2018 | $265,000 | +2.7% | 14,140 | +5.6% | 0.01% | 0.0% |
| Q4 2017 | $258,000 | +7.9% | 13,390 | 0.0% | 0.01% | 0.0% |
| Q3 2017 | $239,000 | +58.3% | 13,390 | +58.8% | 0.01% | +62.5% |
| Q2 2017 | $151,000 | +26.9% | 8,430 | +2.8% | 0.01% | +33.3% |
| Q1 2017 | $119,000 | -18.5% | 8,200 | +3.7% | 0.01% | -14.3% |
| Q4 2016 | $146,000 | – | 7,910 | – | 0.01% | – |
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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% |