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 | $480,319 | +22.3% | 10,444 | -0.3% | 0.00% | +50.0% |
| Q2 2023 | $392,662 | 0.0% | 10,471 | 0.0% | 0.00% | 0.0% |
| Q1 2023 | $392,662 | +33.5% | 10,471 | -0.3% | 0.00% | 0.0% |
| Q4 2022 | $294,209 | -3.5% | 10,500 | -3.4% | 0.00% | 0.0% |
| Q3 2022 | $305,000 | -16.7% | 10,865 | +3.0% | 0.00% | 0.0% |
| Q2 2022 | $366,000 | +36500.0% | 10,547 | +10041.3% | 0.00% | – |
| Q3 2020 | $1,000 | -75.0% | 104 | -48.5% | 0.00% | – |
| Q2 2020 | $4,000 | -69.2% | 202 | -70.1% | 0.00% | – |
| Q1 2020 | $13,000 | 0.0% | 676 | 0.0% | 0.00% | – |
| Q4 2019 | $13,000 | +30.0% | 676 | +24.0% | 0.00% | – |
| Q3 2019 | $10,000 | -9.1% | 545 | -1.8% | 0.00% | – |
| Q2 2019 | $11,000 | -8.3% | 555 | -7.0% | 0.00% | – |
| Q1 2019 | $12,000 | +9.1% | 597 | 0.0% | 0.00% | – |
| Q4 2018 | $11,000 | – | 597 | – | 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% |