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 | $214,405 | -55.4% | 4,662 | -63.7% | 0.01% | -60.0% |
| Q1 2023 | $480,975 | +5.5% | 12,826 | -21.2% | 0.02% | -25.9% |
| Q4 2022 | $455,969 | +8.3% | 16,273 | -10.1% | 0.03% | +42.1% |
| Q4 2021 | $421,000 | +21.7% | 18,094 | +5.3% | 0.02% | -13.6% |
| Q2 2021 | $346,000 | -14.8% | 17,184 | -22.5% | 0.02% | +10.0% |
| Q1 2021 | $406,000 | -32.8% | 22,170 | -26.1% | 0.02% | -23.1% |
| Q4 2020 | $604,000 | +9.0% | 30,015 | +1.6% | 0.03% | 0.0% |
| Q3 2020 | $554,000 | -52.6% | 29,554 | -43.3% | 0.03% | -56.7% |
| Q2 2020 | $1,170,000 | +228.7% | 52,098 | +117.0% | 0.06% | +130.8% |
| Q1 2020 | $356,000 | -8.0% | 24,007 | -5.2% | 0.03% | -13.3% |
| Q2 2018 | $387,000 | – | 25,333 | – | 0.03% | – |
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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% |