AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 136 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2020. The put-call ratio across all filers is 5.39 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $385,616 | -37.0% | 8,385 | -21.3% | 0.00% | 0.0% |
| Q2 2023 | $612,182 | +836.1% | 10,656 | +511.0% | 0.00% | – |
| Q1 2023 | $65,399 | +39.1% | 1,744 | +2.5% | 0.00% | – |
| Q4 2022 | $47,000 | -6.0% | 1,702 | -5.5% | 0.00% | – |
| Q3 2022 | $50,000 | -61.2% | 1,801 | -51.4% | 0.00% | – |
| Q2 2022 | $129,000 | -88.3% | 3,708 | -87.6% | 0.00% | -100.0% |
| Q1 2022 | $1,103,000 | +1942.6% | 29,894 | +1193.6% | 0.00% | – |
| Q4 2021 | $54,000 | +390.9% | 2,311 | +314.2% | 0.00% | – |
| Q3 2021 | $11,000 | -31.2% | 558 | -29.7% | 0.00% | – |
| Q2 2021 | $16,000 | +1500.0% | 794 | +1664.4% | 0.00% | – |
| Q1 2021 | $1,000 | 0.0% | 45 | 0.0% | 0.00% | – |
| Q4 2020 | $1,000 | -90.0% | 45 | -90.8% | 0.00% | – |
| Q3 2020 | $10,000 | -28.6% | 490 | -23.7% | 0.00% | – |
| Q2 2020 | $14,000 | -12.5% | 642 | -40.3% | 0.00% | – |
| Q1 2020 | $16,000 | – | 1,075 | – | 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% |