AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 119 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2019. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $480,319 | +22.3% | 10,444 | -0.3% | 0.00% | +50.0% |
| Q2 2023 | $392,662 | 0.0% | 10,471 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $392,662 | +33.5% | 10,471 | -0.3% | 0.00% | 0.0% |
| Q4 2022 | $294,209 | -3.5% | 10,500 | -3.4% | 0.00% | 0.0% |
| Q3 2022 | $305,000 | -16.7% | 10,865 | +3.0% | 0.00% | 0.0% |
| Q2 2022 | $366,000 | +36500.0% | 10,547 | +10041.3% | 0.00% | – |
| Q3 2020 | $1,000 | -75.0% | 104 | -48.5% | 0.00% | – |
| Q2 2020 | $4,000 | -69.2% | 202 | -70.1% | 0.00% | – |
| Q1 2020 | $13,000 | 0.0% | 676 | 0.0% | 0.00% | – |
| Q4 2019 | $13,000 | +30.0% | 676 | +24.0% | 0.00% | – |
| Q3 2019 | $10,000 | -9.1% | 545 | -1.8% | 0.00% | – |
| Q2 2019 | $11,000 | -8.3% | 555 | -7.0% | 0.00% | – |
| Q1 2019 | $12,000 | +9.1% | 597 | 0.0% | 0.00% | – |
| Q4 2018 | $11,000 | – | 597 | – | 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% |