AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 167 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2023 | $741,938 | +33.8% | 19,785 | 0.0% | 0.01% | +25.0% |
| Q4 2022 | $554,376 | -20.0% | 19,785 | -19.8% | 0.00% | -20.0% |
| Q3 2022 | $693,000 | +140.6% | 24,668 | +197.7% | 0.01% | +150.0% |
| Q2 2022 | $288,000 | -33.3% | 8,286 | -31.1% | 0.00% | 0.0% |
| Q1 2022 | $432,000 | -38.1% | 12,027 | -59.9% | 0.00% | -50.0% |
| Q4 2021 | $698,000 | +336.2% | 29,965 | +278.5% | 0.00% | +300.0% |
| Q2 2021 | $160,000 | -4.8% | 7,916 | -13.9% | 0.00% | 0.0% |
| Q1 2021 | $168,000 | -9.2% | 9,192 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $185,000 | +25.0% | 9,192 | +16.1% | 0.00% | 0.0% |
| Q3 2020 | $148,000 | -75.2% | 7,916 | -75.1% | 0.00% | -50.0% |
| Q1 2018 | $597,000 | -4.5% | 31,820 | -6.2% | 0.00% | -33.3% |
| Q4 2016 | $625,000 | -59.7% | 33,916 | -58.5% | 0.00% | -57.1% |
| Q3 2016 | $1,551,000 | +215.2% | 81,779 | +168.1% | 0.01% | +250.0% |
| Q2 2016 | $492,000 | -11.4% | 30,498 | -34.0% | 0.00% | -33.3% |
| Q1 2016 | $555,000 | -21.2% | 46,239 | -6.5% | 0.00% | 0.0% |
| Q4 2015 | $704,000 | +73.8% | 49,472 | +42.8% | 0.00% | +50.0% |
| Q3 2015 | $405,000 | +1165.6% | 34,637 | +1806.3% | 0.00% | – |
| Q2 2015 | $32,000 | – | 1,817 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 128,000 | $5,886,720 | 5.78% |
| Beacon Harbor Wealth Advisors, Inc. | 103,095 | $4,741 | 1.58% |
| Capital Impact Advisors, LLC | 15,304 | $703,831 | 1.18% |
| Quantedge Capital Pte Ltd | 36,389 | $1,673,530 | 0.91% |
| Mesirow Institutional Investment Management, Inc. | 183,805 | $8,453,192 | 0.86% |
| Monashee Investment Management LLC | 39,461 | $1,814,811 | 0.76% |
| OBERWEIS ASSET MANAGEMENT INC/ | 152,500 | $7,013,475 | 0.74% |
| Granite Investment Partners, LLC | 330,911 | $15,218,597 | 0.64% |
| Portolan Capital Management | 132,850 | $6,109,772 | 0.57% |
| SHAKER INVESTMENTS LLC/OH | 20,795 | $956,362 | 0.53% |