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 | $892,206 | -21.6% | 19,400 | -2.0% | 0.02% | -20.0% |
| Q2 2023 | $1,137,906 | +72.4% | 19,800 | +12.5% | 0.02% | +47.1% |
| Q1 2023 | $660,000 | +131374.1% | 17,600 | -1.7% | 0.02% | +21.4% |
| Q4 2022 | $502 | -99.9% | 17,900 | -2.2% | 0.01% | -6.7% |
| Q3 2022 | $514,000 | -22.9% | 18,300 | +0.5% | 0.02% | -16.7% |
| Q2 2022 | $667,000 | -4.7% | 18,200 | +1.7% | 0.02% | +5.9% |
| Q1 2022 | $700,000 | +68.7% | 17,900 | +0.6% | 0.02% | +88.9% |
| Q4 2021 | $415,000 | +22.8% | 17,800 | 0.0% | 0.01% | +12.5% |
| Q3 2021 | $338,000 | +1.5% | 17,800 | +7.9% | 0.01% | 0.0% |
| Q2 2021 | $333,000 | +9.5% | 16,500 | -0.6% | 0.01% | 0.0% |
| Q1 2021 | $304,000 | -10.1% | 16,600 | -1.2% | 0.01% | -20.0% |
| Q4 2020 | $338,000 | +6.6% | 16,800 | -0.6% | 0.01% | -33.3% |
| Q3 2020 | $317,000 | +54.6% | 16,900 | +85.3% | 0.02% | +25.0% |
| Q2 2020 | $205,000 | -8.9% | 9,120 | -21.9% | 0.01% | +9.1% |
| Q4 2019 | $225,000 | -10.7% | 11,680 | -8.0% | 0.01% | -15.4% |
| Q3 2019 | $252,000 | -5.6% | 12,700 | -3.8% | 0.01% | 0.0% |
| Q2 2019 | $267,000 | +1.1% | 13,200 | +2.3% | 0.01% | 0.0% |
| Q1 2019 | $264,000 | +2.3% | 12,900 | -0.3% | 0.01% | -13.3% |
| Q4 2018 | $258,000 | -12.2% | 12,941 | -15.4% | 0.02% | +15.4% |
| Q3 2018 | $294,000 | +19.5% | 15,300 | -5.0% | 0.01% | +18.2% |
| Q2 2018 | $246,000 | -16.3% | 16,100 | +2.5% | 0.01% | -15.4% |
| Q1 2018 | $294,000 | +0.7% | 15,700 | +3.3% | 0.01% | 0.0% |
| Q4 2017 | $292,000 | +13.6% | 15,200 | +5.6% | 0.01% | +8.3% |
| Q3 2017 | $257,000 | -0.8% | 14,400 | -0.7% | 0.01% | -7.7% |
| Q2 2017 | $259,000 | +22.2% | 14,500 | -0.7% | 0.01% | +18.2% |
| Q1 2017 | $212,000 | -20.0% | 14,600 | +1.4% | 0.01% | -21.4% |
| Q4 2016 | $265,000 | -10.5% | 14,400 | -7.7% | 0.01% | -12.5% |
| Q3 2016 | $296,000 | – | 15,600 | – | 0.02% | – |
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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% |