AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 221 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2022. The put-call ratio across all filers is 12.07 and the average weighting 0.1%.
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 ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $3,649,605 | 3.75% |
| SHAKER INVESTMENTS LLC/OH | 81,287 | $2,277,662 | 1.41% |
| Mesirow Institutional Investment Management, Inc. | 374,414 | $10,491,080 | 1.38% |
| OBERWEIS ASSET MANAGEMENT INC/ | 134,000 | $3,754,680 | 0.80% |
| Portolan Capital Management | 270,791 | $7,587,564 | 0.75% |
| Hillsdale Investment Management Inc. | 172,238 | $4,826,109 | 0.41% |
| Capital Impact Advisors, LLC | 14,669 | $411,025 | 0.40% |
| Watershed Asset Management, L.L.C. | 9,555 | $267,731 | 0.34% |
| Quantedge Capital Pte Ltd | 35,153 | $984,987 | 0.33% |
| FEDERATED HERMES, INC. | 3,284,217 | $92,023,760 | 0.25% |