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 | $61,719 | -77.4% | 1,342 | -71.7% | 0.01% | -83.8% |
| Q2 2023 | $272,580 | +630.5% | 4,743 | +376.7% | 0.08% | +566.7% |
| Q1 2023 | $37,313 | -65.3% | 995 | -74.1% | 0.01% | -66.7% |
| Q4 2022 | $107,457 | +76.2% | 3,835 | +77.0% | 0.04% | +20.0% |
| Q3 2022 | $61,000 | -14.1% | 2,167 | +5.6% | 0.03% | -31.8% |
| Q2 2022 | $71,000 | -37.7% | 2,053 | -35.3% | 0.04% | -22.8% |
| Q1 2022 | $114,000 | +90.0% | 3,172 | +22.8% | 0.06% | +103.6% |
| Q4 2021 | $60,000 | – | 2,584 | – | 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% |