AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 213 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2023. The put-call ratio across all filers is 0.26 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $113,456 | -18.0% | 2,467 | +2.5% | 0.00% | – |
| Q2 2023 | $138,389 | +61.9% | 2,408 | +5.6% | 0.00% | – |
| Q1 2023 | $85,502 | +28.4% | 2,280 | -4.0% | 0.00% | – |
| Q4 2022 | $66,575 | -16.8% | 2,376 | -17.0% | 0.00% | – |
| Q3 2022 | $80,000 | +14.3% | 2,863 | +41.6% | 0.00% | – |
| Q2 2022 | $70,000 | -4.1% | 2,022 | +0.2% | 0.00% | – |
| Q1 2022 | $73,000 | +65.9% | 2,017 | +4.2% | 0.00% | – |
| Q4 2021 | $44,000 | +7.3% | 1,936 | -10.0% | 0.00% | – |
| Q3 2021 | $41,000 | -12.8% | 2,151 | -5.9% | 0.00% | – |
| Q2 2021 | $47,000 | -4.1% | 2,287 | -16.0% | 0.00% | – |
| Q1 2021 | $49,000 | +2.1% | 2,721 | +16.1% | 0.00% | – |
| Q4 2020 | $48,000 | +20.0% | 2,344 | +13.1% | 0.00% | – |
| Q3 2020 | $40,000 | -9.1% | 2,073 | +5.1% | 0.00% | – |
| Q2 2020 | $44,000 | +46.7% | 1,972 | -2.4% | 0.00% | – |
| Q1 2020 | $30,000 | -42.3% | 2,021 | -25.8% | 0.00% | – |
| Q4 2019 | $52,000 | +8.3% | 2,725 | +13.1% | 0.00% | – |
| Q3 2019 | $48,000 | -4.0% | 2,409 | +4.2% | 0.00% | – |
| Q2 2019 | $50,000 | +11.1% | 2,313 | +2.3% | 0.00% | – |
| Q1 2019 | $45,000 | +7.1% | 2,262 | +3.8% | 0.00% | – |
| Q4 2018 | $42,000 | +23.5% | 2,180 | +22.1% | 0.00% | – |
| Q3 2018 | $34,000 | +161.5% | 1,785 | +142.9% | 0.00% | – |
| Q2 2018 | $13,000 | -50.0% | 735 | -47.5% | 0.00% | – |
| Q1 2018 | $26,000 | -3.7% | 1,399 | -1.6% | 0.00% | – |
| Q4 2017 | $27,000 | +285.7% | 1,422 | +260.9% | 0.00% | – |
| Q3 2017 | $7,000 | -99.4% | 394 | -99.3% | 0.00% | -100.0% |
| Q2 2017 | $1,082,000 | +23.0% | 60,521 | -0.1% | 0.00% | 0.0% |
| Q1 2017 | $880,000 | -58.4% | 60,611 | -47.3% | 0.00% | -50.0% |
| Q4 2016 | $2,117,000 | -4.9% | 114,970 | -2.1% | 0.00% | -33.3% |
| Q3 2016 | $2,226,000 | +111200.0% | 117,392 | +112776.9% | 0.00% | – |
| Q2 2016 | $2,000 | +100.0% | 104 | -3.7% | 0.00% | – |
| Q1 2016 | $1,000 | 0.0% | 108 | +3.8% | 0.00% | – |
| Q4 2015 | $1,000 | 0.0% | 104 | 0.0% | 0.00% | – |
| Q3 2015 | $1,000 | -50.0% | 104 | +3.0% | 0.00% | – |
| Q2 2015 | $2,000 | – | 101 | – | 0.00% | – |
Download | ||||||
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% |