AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 135 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $378,728 | -33.2% | 8,235 | -16.5% | 0.03% | -34.0% |
| Q2 2023 | $566,597 | -41.4% | 9,859 | -61.8% | 0.05% | -20.3% |
| Q1 2023 | $967,013 | +9.2% | 25,787 | -18.4% | 0.06% | +1.7% |
| Q4 2022 | $885,936 | +19.6% | 31,618 | +20.0% | 0.06% | +20.8% |
| Q3 2022 | $741,000 | -28.1% | 26,353 | -11.1% | 0.05% | -12.7% |
| Q2 2022 | $1,031,000 | +71.8% | 29,641 | +77.3% | 0.06% | +77.4% |
| Q1 2022 | $600,000 | -29.0% | 16,721 | -53.9% | 0.03% | -39.2% |
| Q4 2021 | $845,000 | -23.8% | 36,295 | -37.8% | 0.05% | -17.7% |
| Q3 2021 | $1,109,000 | +2.3% | 58,326 | +8.5% | 0.06% | +6.9% |
| Q2 2021 | $1,084,000 | +18.9% | 53,752 | +8.0% | 0.06% | +11.5% |
| Q1 2021 | $912,000 | -3.9% | 49,766 | +5.5% | 0.05% | -24.6% |
| Q4 2020 | $949,000 | -48.0% | 47,185 | -51.5% | 0.07% | +16.9% |
| Q3 2020 | $1,824,000 | -59.0% | 97,255 | -51.0% | 0.06% | -48.7% |
| Q2 2020 | $4,454,000 | +264.2% | 198,320 | +140.7% | 0.12% | +259.4% |
| Q1 2020 | $1,223,000 | -31.6% | 82,402 | -11.1% | 0.03% | +28.0% |
| Q4 2019 | $1,788,000 | +473.1% | 92,678 | +489.4% | 0.02% | +525.0% |
| Q3 2019 | $312,000 | +29.5% | 15,724 | +33.5% | 0.00% | -20.0% |
| Q1 2019 | $241,000 | – | 11,781 | – | 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% |