AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 130 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $36,930 | -21.8% | 803 | -2.3% | 0.00% | -20.0% |
| Q2 2023 | $47,241 | +55.1% | 822 | +1.2% | 0.01% | +66.7% |
| Q1 2023 | $30,450 | +261.0% | 812 | +169.8% | 0.00% | +200.0% |
| Q4 2022 | $8,434 | -23.3% | 301 | -25.5% | 0.00% | 0.0% |
| Q3 2022 | $11,000 | +37.5% | 404 | +78.0% | 0.00% | 0.0% |
| Q2 2022 | $8,000 | -42.9% | 227 | -42.4% | 0.00% | -50.0% |
| Q1 2022 | $14,000 | +133.3% | 394 | +60.8% | 0.00% | +100.0% |
| Q4 2021 | $6,000 | -14.3% | 245 | -31.2% | 0.00% | 0.0% |
| Q3 2021 | $7,000 | +250.0% | 356 | +229.6% | 0.00% | – |
| Q2 2021 | $2,000 | 0.0% | 108 | -8.5% | 0.00% | – |
| Q1 2021 | $2,000 | +100.0% | 118 | +114.5% | 0.00% | – |
| Q4 2020 | $1,000 | 0.0% | 55 | 0.0% | 0.00% | – |
| Q3 2020 | $1,000 | 0.0% | 55 | 0.0% | 0.00% | – |
| Q2 2020 | $1,000 | 0.0% | 55 | 0.0% | 0.00% | – |
| Q1 2020 | $1,000 | -98.1% | 55 | -97.9% | 0.00% | -100.0% |
| Q2 2019 | $54,000 | +1.9% | 2,636 | 0.0% | 0.01% | 0.0% |
| Q1 2019 | $53,000 | – | 2,636 | – | 0.01% | – |
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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% |