AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $173,612 | -1.7% | 3,775 | +22.8% | 0.01% | 0.0% |
| Q2 2023 | $176,605 | +53.3% | 3,073 | 0.0% | 0.01% | +40.0% |
| Q1 2023 | $115,238 | +23.4% | 3,073 | 0.0% | 0.01% | +25.0% |
| Q4 2022 | $93,358 | +8.6% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q3 2022 | $86,000 | -18.9% | 3,073 | 0.0% | 0.00% | -20.0% |
| Q2 2022 | $106,000 | -3.6% | 3,073 | 0.0% | 0.01% | +25.0% |
| Q1 2022 | $110,000 | +52.8% | 3,073 | 0.0% | 0.00% | +100.0% |
| Q4 2021 | $72,000 | +24.1% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q3 2021 | $58,000 | -6.5% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q2 2021 | $62,000 | +10.7% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q1 2021 | $56,000 | -9.7% | 3,073 | 0.0% | 0.00% | -33.3% |
| Q4 2020 | $62,000 | +6.9% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $58,000 | -15.9% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $69,000 | +50.0% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $46,000 | -22.0% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $59,000 | -3.3% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $61,000 | -6.2% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $65,000 | +3.2% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q1 2019 | $63,000 | +3.3% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q4 2018 | $61,000 | +3.4% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $59,000 | +25.5% | 3,073 | 0.0% | 0.00% | +50.0% |
| Q2 2018 | $47,000 | -19.0% | 3,073 | 0.0% | 0.00% | -33.3% |
| Q1 2018 | $58,000 | -1.7% | 3,073 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $59,000 | +20.4% | 3,073 | 0.0% | 0.00% | +50.0% |
| Q3 2017 | $49,000 | -10.9% | 3,073 | 0.0% | 0.00% | -33.3% |
| Q2 2017 | $55,000 | +22.2% | 3,073 | 0.0% | 0.00% | +50.0% |
| Q1 2017 | $45,000 | – | 3,073 | – | 0.00% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $4,884,375 | 4.79% |
| SHAKER INVESTMENTS LLC/OH | 82,253 | $3,084,488 | 1.72% |
| Mesirow Institutional Investment Management, Inc. | 325,669 | $12,212,588 | 1.33% |
| Portolan Capital Management | 340,593 | $12,772,238 | 1.22% |
| OBERWEIS ASSET MANAGEMENT INC/ | 178,200 | $6,682,500 | 1.04% |
| Granite Investment Partners, LLC | 536,821 | $20,130,788 | 0.84% |
| Capital Impact Advisors, LLC | 15,304 | $573,900 | 0.70% |
| Hillsdale Investment Management Inc. | 155,038 | $5,813,926 | 0.50% |
| GLOBEFLEX CAPITAL L P | 89,192 | $3,344,700 | 0.41% |
| Jackson Creek Investment Advisors LLC | 25,877 | $970 | 0.41% |