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 | $778 | -21.7% | 16,922 | -2.1% | 0.01% | -12.5% |
| Q2 2023 | $993 | +53.7% | 17,279 | +0.3% | 0.01% | +33.3% |
| Q1 2023 | $646 | +25.2% | 17,221 | -6.5% | 0.01% | +20.0% |
| Q4 2022 | $516 | -99.9% | 18,409 | -0.9% | 0.01% | 0.0% |
| Q3 2022 | $522,000 | -17.5% | 18,577 | +2.0% | 0.01% | -16.7% |
| Q2 2022 | $633,000 | +4.3% | 18,206 | +7.7% | 0.01% | +20.0% |
| Q1 2022 | $607,000 | -27.4% | 16,909 | -52.9% | 0.01% | +66.7% |
| Q4 2021 | $836,000 | +148.1% | 35,866 | +102.4% | 0.00% | 0.0% |
| Q3 2021 | $337,000 | -7.2% | 17,720 | -1.6% | 0.00% | 0.0% |
| Q2 2021 | $363,000 | – | 18,011 | – | 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% |