AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 135 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2019. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2023 | $16,576 | -1.5% | 268 | -26.8% | 0.01% | 0.0% |
| Q3 2023 | $16,832 | -31.2% | 366 | -14.1% | 0.01% | -37.5% |
| Q2 2023 | $24,482 | +43.0% | 426 | -6.6% | 0.01% | +33.3% |
| Q1 2023 | $17,125 | +28.9% | 456 | -3.8% | 0.01% | +20.0% |
| Q4 2022 | $13,281 | +2.2% | 474 | 0.0% | 0.01% | 0.0% |
| Q3 2022 | $13,000 | -23.5% | 474 | -0.2% | 0.01% | -16.7% |
| Q2 2022 | $17,000 | -10.5% | 475 | -7.9% | 0.01% | 0.0% |
| Q1 2022 | $19,000 | +46.2% | 516 | -8.5% | 0.01% | +50.0% |
| Q4 2021 | $13,000 | +30.0% | 564 | +12.1% | 0.00% | 0.0% |
| Q3 2021 | $10,000 | -9.1% | 503 | -8.4% | 0.00% | 0.0% |
| Q2 2021 | $11,000 | +22.2% | 549 | +16.1% | 0.00% | +33.3% |
| Q1 2021 | $9,000 | 0.0% | 473 | 0.0% | 0.00% | -25.0% |
| Q4 2020 | $9,000 | +12.5% | 473 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $8,000 | -20.0% | 473 | 0.0% | 0.00% | -20.0% |
| Q2 2020 | $10,000 | +66.7% | 473 | +2.2% | 0.01% | +66.7% |
| Q1 2020 | $6,000 | – | 463 | +2004.5% | 0.00% | – |
| Q4 2018 | $0 | – | 22 | +83.3% | 0.00% | – |
| Q3 2018 | $0 | – | 12 | -20.0% | 0.00% | – |
| Q2 2018 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q1 2018 | $0 | – | 15 | -65.1% | 0.00% | – |
| Q4 2017 | $0 | – | 43 | 0.0% | 0.00% | – |
| Q3 2017 | $0 | -100.0% | 43 | -81.3% | 0.00% | -100.0% |
| Q2 2017 | $4,000 | – | 230 | – | 0.00% | – |
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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% |