AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 206 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2022. The put-call ratio across all filers is 0.50 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,126,893 | -18.7% | 24,503 | +1.6% | 0.01% | -35.3% |
| Q2 2023 | $1,385,429 | +230804.8% | 24,107 | +50.6% | 0.02% | +88.9% |
| Q1 2023 | $600 | -99.9% | 16,010 | -47.8% | 0.01% | -67.9% |
| Q2 2022 | $1,067,000 | -26.4% | 30,676 | -24.1% | 0.03% | -17.6% |
| Q1 2022 | $1,450,000 | +42.4% | 40,395 | -7.6% | 0.03% | +100.0% |
| Q4 2021 | $1,018,000 | +23.2% | 43,712 | +0.6% | 0.02% | +30.8% |
| Q3 2021 | $826,000 | +9.4% | 43,459 | +16.1% | 0.01% | -7.1% |
| Q2 2021 | $755,000 | -5.9% | 37,433 | -14.5% | 0.01% | -12.5% |
| Q1 2021 | $802,000 | +52.8% | 43,789 | +67.6% | 0.02% | +6.7% |
| Q4 2020 | $525,000 | +2.3% | 26,122 | -26.2% | 0.02% | -6.2% |
| Q1 2017 | $513,000 | +5.3% | 35,387 | +33.9% | 0.02% | +23.1% |
| Q4 2016 | $487,000 | -3.9% | 26,427 | -1.2% | 0.01% | +8.3% |
| Q3 2016 | $507,000 | +3.9% | 26,743 | -11.7% | 0.01% | +20.0% |
| Q2 2016 | $488,000 | +99.2% | 30,276 | +48.5% | 0.01% | +66.7% |
| Q1 2016 | $245,000 | – | 20,389 | – | 0.01% | – |
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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% |