AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 104 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2017. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $819 | -99.9% | 21,852 | -36.5% | 0.08% | -22.9% |
| Q1 2021 | $631,000 | +25.2% | 34,425 | +4.3% | 0.10% | +320.0% |
| Q2 2018 | $504,000 | +26.0% | 33,000 | +47.3% | 0.02% | -7.4% |
| Q3 2017 | $400,000 | -61.6% | 22,400 | -60.4% | 0.03% | -56.5% |
| Q4 2016 | $1,042,000 | +203.8% | 56,544 | +212.4% | 0.06% | +244.4% |
| Q3 2016 | $343,000 | +109.1% | 18,100 | +57.4% | 0.02% | +125.0% |
| Q4 2015 | $164,000 | +12.3% | 11,500 | -7.9% | 0.01% | +14.3% |
| Q3 2015 | $146,000 | -32.1% | 12,486 | -13.3% | 0.01% | -22.2% |
| Q1 2015 | $215,000 | -38.9% | 14,400 | -52.5% | 0.01% | -64.0% |
| Q4 2014 | $352,000 | – | 30,300 | – | 0.02% | – |
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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% |