AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 206 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2022. The put-call ratio across all filers is 0.50 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $22,643 | +503.8% | 394 | +294.0% | 0.00% | – |
| Q1 2023 | $3,750 | -97.2% | 100 | -97.4% | 0.00% | – |
| Q2 2022 | $133,000 | +47.8% | 3,826 | +53.0% | 0.00% | – |
| Q1 2022 | $90,000 | +4400.0% | 2,500 | +2400.0% | 0.00% | – |
| Q2 2021 | $2,000 | -85.7% | 100 | -87.5% | 0.00% | – |
| Q2 2017 | $14,000 | -39.1% | 801 | -50.0% | 0.00% | – |
| Q1 2017 | $23,000 | -4.2% | 1,601 | +23.1% | 0.00% | – |
| Q4 2016 | $24,000 | – | 1,301 | – | 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% |