AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $278,193 | -21.0% | 6,049 | -1.3% | 0.00% | -33.3% |
| Q2 2023 | $352,119 | -20.9% | 6,127 | -48.4% | 0.00% | -25.0% |
| Q1 2023 | $444,975 | -12.6% | 11,866 | -34.7% | 0.00% | 0.0% |
| Q4 2022 | $509,095 | +28.9% | 18,169 | +29.1% | 0.00% | 0.0% |
| Q3 2022 | $395,000 | -25.6% | 14,073 | -7.7% | 0.00% | 0.0% |
| Q2 2022 | $531,000 | -52.5% | 15,244 | -51.1% | 0.00% | -42.9% |
| Q1 2022 | $1,118,000 | +40.5% | 31,155 | -8.9% | 0.01% | +75.0% |
| Q4 2021 | $796,000 | +13.1% | 34,191 | -7.7% | 0.00% | 0.0% |
| Q3 2021 | $704,000 | +306.9% | 37,056 | +208.7% | 0.00% | – |
| Q1 2017 | $173,000 | -87.4% | 12,003 | -83.9% | 0.00% | -100.0% |
| Q4 2016 | $1,377,000 | -47.1% | 74,718 | -45.5% | 0.00% | -50.0% |
| Q3 2016 | $2,603,000 | +104.6% | 137,215 | +74.0% | 0.01% | +100.0% |
| Q2 2016 | $1,272,000 | +8.5% | 78,866 | -19.2% | 0.00% | 0.0% |
| Q1 2016 | $1,172,000 | -11.1% | 97,665 | +5.4% | 0.00% | 0.0% |
| Q4 2015 | $1,319,000 | +2.9% | 92,670 | -15.5% | 0.00% | 0.0% |
| Q3 2015 | $1,282,000 | -36.3% | 109,641 | -4.3% | 0.00% | -20.0% |
| Q2 2015 | $2,014,000 | – | 114,540 | – | 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% |