AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $11 | +57.1% | 196 | -29.7% | 0.00% | – |
| Q4 2022 | $7 | -100.0% | 279 | -65.1% | 0.00% | – |
| Q3 2021 | $16,000 | 0.0% | 800 | 0.0% | 0.00% | – |
| Q2 2021 | $16,000 | +45.5% | 800 | +27.4% | 0.00% | – |
| Q3 2020 | $11,000 | +450.0% | 628 | +528.0% | 0.00% | – |
| Q2 2020 | $2,000 | -80.0% | 100 | -81.9% | 0.00% | – |
| Q3 2019 | $10,000 | -44.4% | 552 | -35.9% | 0.00% | – |
| Q2 2019 | $18,000 | +80.0% | 861 | +65.9% | 0.00% | – |
| Q4 2018 | $10,000 | +25.0% | 519 | +15.1% | 0.00% | – |
| Q3 2018 | $8,000 | +60.0% | 451 | +19.9% | 0.00% | – |
| Q2 2018 | $5,000 | -85.7% | 376 | -81.0% | 0.00% | -100.0% |
| Q3 2017 | $35,000 | -30.0% | 1,975 | -30.6% | 0.00% | -50.0% |
| Q2 2017 | $50,000 | -81.9% | 2,844 | -80.6% | 0.00% | -89.5% |
| Q3 2016 | $277,000 | – | 14,629 | – | 0.02% | – |
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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% |