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 | $159 | 0.0% | 2,770 | 0.0% | 0.00% | 0.0% |
| Q2 2023 | $159 | +33.6% | 2,770 | -12.8% | 0.00% | 0.0% |
| Q1 2023 | $119 | +33.7% | 3,178 | 0.0% | 0.00% | – |
| Q4 2022 | $89 | -99.9% | 3,178 | 0.0% | 0.00% | – |
| Q3 2022 | $89,000 | -19.8% | 3,178 | 0.0% | 0.00% | -100.0% |
| Q2 2022 | $111,000 | -86.3% | 3,178 | -92.4% | 0.00% | -80.0% |
| Q4 2019 | $811,000 | -2.6% | 42,019 | 0.0% | 0.01% | -16.7% |
| Q3 2019 | $833,000 | -6.1% | 42,019 | 0.0% | 0.01% | -14.3% |
| Q2 2019 | $887,000 | -21.9% | 42,019 | -24.4% | 0.01% | -22.2% |
| Q1 2019 | $1,136,000 | +2.6% | 55,607 | 0.0% | 0.01% | -25.0% |
| Q4 2018 | $1,107,000 | -19.7% | 55,607 | -22.4% | 0.01% | +20.0% |
| Q3 2018 | $1,379,000 | +41.4% | 71,653 | +12.2% | 0.01% | +25.0% |
| Q2 2018 | $975,000 | -15.1% | 63,871 | +4.3% | 0.01% | -27.3% |
| Q1 2018 | $1,148,000 | +29.7% | 61,241 | +33.1% | 0.01% | +37.5% |
| Q4 2017 | $885,000 | +7.7% | 46,016 | 0.0% | 0.01% | +14.3% |
| Q3 2017 | $822,000 | 0.0% | 46,016 | 0.0% | 0.01% | -12.5% |
| Q2 2017 | $822,000 | +23.2% | 46,016 | 0.0% | 0.01% | +33.3% |
| Q1 2017 | $667,000 | +22.6% | 46,016 | +55.7% | 0.01% | +20.0% |
| Q4 2016 | $544,000 | – | 29,556 | – | 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% |