AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 135 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $422 | +10.2% | 9,187 | +37.2% | 0.00% | – |
| Q2 2023 | $383 | +152.0% | 6,696 | +65.0% | 0.00% | – |
| Q1 2023 | $152 | -10.1% | 4,059 | -32.7% | 0.00% | – |
| Q4 2022 | $169 | -99.9% | 6,033 | +13.2% | 0.00% | – |
| Q3 2022 | $149,000 | +6.4% | 5,331 | +31.9% | 0.00% | – |
| Q2 2022 | $140,000 | +105.9% | 4,043 | +110.9% | 0.00% | – |
| Q1 2022 | $68,000 | +61.9% | 1,917 | +3.8% | 0.00% | – |
| Q4 2021 | $42,000 | -40.0% | 1,846 | -46.9% | 0.00% | – |
| Q2 2021 | $70,000 | +22.8% | 3,479 | +21.6% | 0.00% | – |
| Q4 2020 | $57,000 | +23.9% | 2,861 | +16.5% | 0.00% | – |
| Q3 2020 | $46,000 | +35.3% | 2,456 | +35.5% | 0.00% | – |
| Q4 2019 | $34,000 | +54.5% | 1,812 | +62.2% | 0.00% | – |
| Q3 2019 | $22,000 | – | 1,117 | – | 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% |