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 | $108,352 | -20.0% | 2,356 | 0.0% | 0.01% | -13.3% |
| Q2 2023 | $135,399 | -96.0% | 2,356 | -97.4% | 0.02% | -96.3% |
| Q1 2023 | $3,344,700 | +80.5% | 89,192 | +34.9% | 0.41% | +73.6% |
| Q4 2022 | $1,852,738 | -8.7% | 66,122 | -8.5% | 0.24% | -32.7% |
| Q3 2022 | $2,030,000 | -19.3% | 72,253 | 0.0% | 0.35% | -43.1% |
| Q2 2022 | $2,514,000 | -3.2% | 72,253 | -0.1% | 0.61% | +16.5% |
| Q1 2022 | $2,596,000 | -23.0% | 72,300 | -50.0% | 0.53% | +52.5% |
| Q4 2021 | $3,370,000 | +976.7% | 144,692 | +779.2% | 0.34% | +407.4% |
| Q3 2021 | $313,000 | -5.7% | 16,457 | 0.0% | 0.07% | +13.3% |
| Q2 2021 | $332,000 | -18.0% | 16,457 | -23.8% | 0.06% | -43.9% |
| Q3 2020 | $405,000 | -16.5% | 21,594 | 0.0% | 0.11% | -13.0% |
| Q2 2020 | $485,000 | +1285.7% | 21,594 | +788.6% | 0.12% | +1437.5% |
| Q1 2017 | $35,000 | -96.3% | 2,430 | -95.2% | 0.01% | -96.6% |
| Q4 2016 | $934,000 | +307.9% | 50,686 | +319.4% | 0.23% | +308.8% |
| Q3 2016 | $229,000 | +17.4% | 12,086 | 0.0% | 0.06% | +7.5% |
| Q2 2016 | $195,000 | +34.5% | 12,086 | 0.0% | 0.05% | +35.9% |
| Q1 2016 | $145,000 | -15.7% | 12,086 | 0.0% | 0.04% | -15.2% |
| Q4 2015 | $172,000 | +17100.0% | 12,086 | +25079.2% | 0.05% | – |
| Q1 2015 | $1,000 | 0.0% | 48 | -27.3% | 0.00% | – |
| Q4 2014 | $1,000 | – | 66 | – | 0.00% | – |
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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% |