AMPHASTAR PHARMACEUTICALS IN's ticker is and the CUSIP is 03209R903. A total of 2 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2023. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $50 | +127.3% | 1,100 | +175.0% | 0.00% | – |
| Q2 2023 | $22 | -57.7% | 400 | -71.4% | 0.00% | – |
| Q1 2023 | $52 | +23.8% | 1,400 | -6.7% | 0.00% | – |
| Q4 2022 | $42 | -100.0% | 1,500 | -92.7% | 0.00% | -100.0% |
| Q3 2022 | $576,000 | +27.4% | 20,500 | +57.7% | 0.00% | – |
| Q2 2022 | $452,000 | +28.8% | 13,000 | +32.7% | 0.00% | – |
| Q1 2022 | $351,000 | +20.6% | 9,800 | -21.6% | 0.00% | – |
| Q4 2021 | $291,000 | +809.4% | 12,500 | +73429.4% | 0.00% | – |
| Q4 2019 | $32,000 | +68.4% | 17 | +70.0% | 0.00% | – |
| Q3 2019 | $19,000 | -9.5% | 10 | 0.0% | 0.00% | – |
| Q2 2019 | $21,000 | -52.3% | 10 | -80.0% | 0.00% | -100.0% |
| Q1 2018 | $44,000 | – | 50 | +66.7% | 0.00% | – |
| Q4 2016 | $0 | -100.0% | 30 | +50.0% | 0.00% | – |
| Q4 2015 | $1,000 | – | 20 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% |
| SIMPLEX TRADING, LLC | 1,400 | $52 | 0.00% |