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 | $338 | -46.7% | 7,339 | -33.5% | 0.01% | -44.0% |
| Q2 2023 | $634 | +52.4% | 11,035 | -0.6% | 0.02% | +47.1% |
| Q1 2023 | $416 | +33.3% | 11,098 | -0.4% | 0.02% | +21.4% |
| Q4 2022 | $312 | -99.9% | 11,137 | -16.9% | 0.01% | -6.7% |
| Q3 2022 | $376,000 | -36.1% | 13,398 | -20.8% | 0.02% | -11.8% |
| Q2 2022 | $588,000 | -49.4% | 16,908 | -47.8% | 0.02% | -37.0% |
| Q1 2022 | $1,163,000 | +34.3% | 32,403 | -12.9% | 0.03% | +50.0% |
| Q4 2021 | $866,000 | +23.0% | 37,199 | +0.5% | 0.02% | +12.5% |
| Q3 2021 | $704,000 | -9.6% | 37,022 | -4.1% | 0.02% | +6.7% |
| Q2 2021 | $779,000 | +16.4% | 38,622 | +5.7% | 0.02% | +15.4% |
| Q1 2021 | $669,000 | +89.0% | 36,532 | +107.3% | 0.01% | +85.7% |
| Q4 2020 | $354,000 | +7.3% | 17,624 | 0.0% | 0.01% | -12.5% |
| Q3 2020 | $330,000 | +3.4% | 17,624 | +24.2% | 0.01% | 0.0% |
| Q2 2020 | $319,000 | – | 14,187 | – | 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% |