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 | ||||
|---|---|---|---|---|---|---|
| Q4 2023 | $1,326,064 | +35.6% | 21,440 | +0.8% | 0.04% | +25.0% |
| Q3 2023 | $978,253 | -63.1% | 21,271 | -53.9% | 0.03% | -56.9% |
| Q2 2023 | $2,648,965 | +51.6% | 46,093 | -1.1% | 0.06% | +35.4% |
| Q1 2023 | $1,746,863 | +67.8% | 46,583 | +25.4% | 0.05% | +60.0% |
| Q4 2022 | $1,040,999 | +2.9% | 37,152 | +3.2% | 0.03% | -9.1% |
| Q3 2022 | $1,012,000 | -46.4% | 36,017 | -33.7% | 0.03% | -40.0% |
| Q2 2022 | $1,889,000 | -0.1% | 54,293 | +3.1% | 0.06% | +44.7% |
| Q1 2022 | $1,891,000 | +224.9% | 52,681 | +110.9% | 0.04% | +245.5% |
| Q4 2021 | $582,000 | -50.1% | 24,983 | -56.8% | 0.01% | -70.3% |
| Q2 2021 | $1,166,000 | +21.6% | 57,851 | +10.5% | 0.04% | +2.8% |
| Q1 2021 | $959,000 | +188.0% | 52,334 | +215.9% | 0.04% | +140.0% |
| Q4 2020 | $333,000 | +12.5% | 16,565 | +4.8% | 0.02% | -11.8% |
| Q3 2020 | $296,000 | – | 15,809 | – | 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% |