AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 119 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2017. The put-call ratio across all filers is 1.48 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2022 | $2,395,000 | -46.5% | 68,855 | -44.8% | 0.58% | -29.9% |
| Q1 2022 | $4,477,000 | +84.0% | 124,697 | +2.0% | 0.83% | +26.2% |
| Q4 2018 | $2,433,000 | -23.7% | 122,250 | -29.3% | 0.66% | +55.9% |
| Q4 2016 | $3,187,000 | -13.1% | 173,018 | -10.5% | 0.42% | -14.0% |
| Q3 2016 | $3,668,000 | -7.8% | 193,355 | -21.7% | 0.49% | -17.6% |
| Q2 2016 | $3,978,000 | +231.8% | 246,805 | +261.8% | 0.60% | +327.1% |
| Q2 2015 | $1,199,000 | – | 68,224 | – | 0.14% | – |
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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% |