AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 221 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2022. The put-call ratio across all filers is 12.07 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,231 | -20.0% | 92 | 0.0% | 0.00% | 0.0% |
| Q2 2023 | $5,287 | +53.2% | 92 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $3,450 | +33.8% | 92 | 0.0% | 0.00% | – |
| Q4 2022 | $2,578 | -14.1% | 92 | -5.2% | 0.00% | -100.0% |
| Q3 2022 | $3,000 | -25.0% | 97 | -9.3% | 0.00% | 0.0% |
| Q2 2022 | $4,000 | 0.0% | 107 | +9.2% | 0.00% | 0.0% |
| Q1 2022 | $4,000 | +100.0% | 98 | +10.1% | 0.00% | – |
| Q4 2021 | $2,000 | +100.0% | 89 | +56.1% | 0.00% | – |
| Q3 2021 | $1,000 | – | 57 | +375.0% | 0.00% | – |
| Q2 2021 | $0 | – | 12 | -14.3% | 0.00% | – |
| Q4 2019 | $0 | -100.0% | 14 | -72.0% | 0.00% | – |
| Q3 2019 | $1,000 | – | 50 | +316.7% | 0.00% | – |
| Q2 2019 | $0 | – | 12 | – | 0.00% | – |
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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% |