AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $6,443,889 | -40.6% | 140,115 | -25.8% | 0.00% | -50.0% |
| Q2 2023 | $10,853,209 | +619.2% | 188,850 | +369.3% | 0.00% | – |
| Q1 2023 | $1,509,038 | +3.4% | 40,241 | -22.8% | 0.00% | – |
| Q4 2022 | $1,460,039 | -73.6% | 52,107 | -73.5% | 0.00% | -100.0% |
| Q3 2022 | $5,521,000 | +82.2% | 196,465 | +125.6% | 0.00% | – |
| Q2 2022 | $3,030,000 | -67.6% | 87,098 | -66.6% | 0.00% | -100.0% |
| Q1 2022 | $9,363,000 | +88.3% | 260,783 | +22.1% | 0.00% | +100.0% |
| Q4 2021 | $4,973,000 | +910.8% | 213,522 | +776.1% | 0.00% | – |
| Q2 2021 | $492,000 | -47.8% | 24,373 | -52.6% | 0.00% | – |
| Q1 2021 | $942,000 | -33.2% | 51,429 | -26.7% | 0.00% | – |
| Q4 2020 | $1,410,000 | +39.3% | 70,138 | +29.9% | 0.00% | – |
| Q3 2020 | $1,012,000 | -16.4% | 53,974 | +0.2% | 0.00% | – |
| Q2 2020 | $1,210,000 | -5.5% | 53,840 | -37.6% | 0.00% | -100.0% |
| Q1 2020 | $1,280,000 | -51.1% | 86,215 | -34.7% | 0.00% | 0.0% |
| Q3 2019 | $2,618,000 | +116.5% | 132,053 | +130.5% | 0.00% | 0.0% |
| Q2 2019 | $1,209,000 | +137.1% | 57,286 | +129.5% | 0.00% | – |
| Q1 2019 | $510,000 | -19.9% | 24,960 | -22.0% | 0.00% | – |
| Q4 2018 | $637,000 | -0.6% | 32,014 | -6.3% | 0.00% | – |
| Q1 2018 | $641,000 | -61.2% | 34,180 | -63.1% | 0.00% | -100.0% |
| Q2 2017 | $1,653,000 | -67.9% | 92,576 | -74.0% | 0.00% | -80.0% |
| Q1 2017 | $5,156,000 | +1412.0% | 355,566 | +1823.3% | 0.01% | – |
| Q4 2016 | $341,000 | -72.8% | 18,487 | -72.0% | 0.00% | -100.0% |
| Q3 2016 | $1,254,000 | -63.9% | 66,120 | -69.3% | 0.00% | -75.0% |
| Q2 2016 | $3,469,000 | +2243.9% | 215,231 | +1640.1% | 0.00% | – |
| Q1 2016 | $148,000 | +0.7% | 12,369 | +19.7% | 0.00% | – |
| Q4 2015 | $147,000 | -88.6% | 10,336 | -86.0% | 0.00% | -100.0% |
| Q2 2015 | $1,295,000 | +48.9% | 73,670 | +26.7% | 0.00% | 0.0% |
| Q1 2015 | $870,000 | +48.7% | 58,162 | +15.4% | 0.00% | 0.0% |
| Q4 2014 | $585,000 | +219.7% | 50,384 | +220.9% | 0.00% | – |
| Q3 2014 | $183,000 | – | 15,700 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| FRIESS ASSOCIATES LLC | 97,760 | $3,401,000 | 5.68% |
| Nantahala Capital Management | 1,000,000 | $34,790,000 | 1.74% |
| MESIROW FINANCIAL INVESTMENT MANAGEMENT - Fixed Income | 341,294 | $11,874,000 | 1.52% |
| Portolan Capital Management | 274,889 | $9,563,000 | 0.96% |
| Quantedge Capital Pte Ltd | 121,500 | $4,227,000 | 0.85% |
| SHAKER INVESTMENTS LLC/OH | 37,117 | $1,291,000 | 0.82% |
| GLOBEFLEX CAPITAL L P | 72,253 | $2,514,000 | 0.61% |
| EAM Investors, LLC | 68,855 | $2,395,000 | 0.58% |
| Hillsdale Investment Management Inc. | 197,738 | $6,879,000 | 0.55% |
| Capital Impact Advisors, LLC | 13,835 | $481,000 | 0.44% |