AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 211 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2022. The put-call ratio across all filers is 0.20 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $260,167 | -21.7% | 4,527 | -48.9% | 0.03% | -25.6% |
| Q1 2023 | $332,437 | +28.1% | 8,865 | -4.3% | 0.04% | +14.7% |
| Q4 2022 | $259,465 | -6.7% | 9,260 | -6.3% | 0.03% | -17.1% |
| Q3 2022 | $278,000 | -19.0% | 9,878 | +0.3% | 0.04% | -14.6% |
| Q2 2022 | $343,000 | +0.3% | 9,846 | +3.3% | 0.05% | +14.3% |
| Q1 2022 | $342,000 | +53.4% | 9,535 | -0.3% | 0.04% | +44.8% |
| Q4 2021 | $223,000 | -7.5% | 9,565 | -20.0% | 0.03% | -19.4% |
| Q2 2021 | $241,000 | +10.6% | 11,949 | +0.3% | 0.04% | -37.9% |
| Q1 2021 | $218,000 | -6.4% | 11,913 | +2.8% | 0.06% | -7.9% |
| Q4 2020 | $233,000 | – | 11,592 | – | 0.06% | – |
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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% |