AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 241 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2023. The put-call ratio across all filers is 0.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $4,440,242 | -22.9% | 96,548 | -3.7% | 0.41% | -23.1% |
| Q2 2023 | $5,758,955 | -0.9% | 100,208 | -35.4% | 0.53% | +6.2% |
| Q1 2023 | $5,813,926 | +20.5% | 155,038 | -10.0% | 0.50% | +22.1% |
| Q4 2022 | $4,826,109 | -13.2% | 172,238 | -12.9% | 0.41% | -18.7% |
| Q3 2022 | $5,557,000 | -19.2% | 197,738 | 0.0% | 0.50% | -8.9% |
| Q2 2022 | $6,879,000 | -18.2% | 197,738 | -15.6% | 0.55% | +1.5% |
| Q1 2022 | $8,412,000 | +1078.2% | 234,338 | +593.3% | 0.54% | +664.8% |
| Q2 2019 | $714,000 | +29.3% | 33,800 | +25.2% | 0.07% | +42.0% |
| Q1 2019 | $552,000 | +22.7% | 27,000 | +19.5% | 0.05% | -5.7% |
| Q4 2018 | $450,000 | – | 22,600 | – | 0.05% | – |
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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% |