AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
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 ↓ |
|---|---|---|---|
| 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% |