AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 145 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q2 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $7,013,475 | -17.4% | 152,500 | +3.2% | 0.74% | -27.8% |
| Q2 2023 | $8,494,066 | +27.1% | 147,800 | -17.1% | 1.03% | -0.5% |
| Q1 2023 | $6,682,500 | +78.0% | 178,200 | +33.0% | 1.04% | +29.9% |
| Q4 2022 | $3,754,680 | +31.7% | 134,000 | +32.0% | 0.80% | +19.6% |
| Q3 2022 | $2,852,000 | +357.8% | 101,500 | +467.0% | 0.67% | +322.2% |
| Q2 2022 | $623,000 | +28.5% | 17,900 | +32.6% | 0.16% | +62.9% |
| Q1 2022 | $485,000 | +54.5% | 13,500 | 0.0% | 0.10% | +70.2% |
| Q4 2021 | $314,000 | +55.4% | 13,500 | +27.4% | 0.06% | +35.7% |
| Q3 2021 | $202,000 | -5.6% | 10,600 | 0.0% | 0.04% | -10.6% |
| Q2 2021 | $214,000 | -57.3% | 10,600 | -61.0% | 0.05% | -68.7% |
| Q4 2016 | $501,000 | -2.9% | 27,200 | 0.0% | 0.15% | +0.7% |
| Q3 2016 | $516,000 | +17.8% | 27,200 | 0.0% | 0.15% | +14.6% |
| Q2 2016 | $438,000 | – | 27,200 | – | 0.13% | – |
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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% |