AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 130 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2020 | $4,000 | 0.0% | 200 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $4,000 | +33.3% | 200 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $3,000 | -25.0% | 200 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $4,000 | 0.0% | 200 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $4,000 | -50.0% | 200 | -50.0% | 0.00% | -50.0% |
| Q2 2019 | $8,000 | 0.0% | 400 | 0.0% | 0.00% | 0.0% |
| Q1 2019 | $8,000 | 0.0% | 400 | 0.0% | 0.00% | -33.3% |
| Q4 2018 | $8,000 | 0.0% | 400 | 0.0% | 0.00% | +50.0% |
| Q3 2018 | $8,000 | +33.3% | 400 | 0.0% | 0.00% | 0.0% |
| Q2 2018 | $6,000 | -25.0% | 400 | 0.0% | 0.00% | -33.3% |
| Q1 2018 | $8,000 | 0.0% | 400 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $8,000 | +14.3% | 400 | 0.0% | 0.00% | +50.0% |
| Q3 2017 | $7,000 | 0.0% | 400 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $7,000 | +16.7% | 400 | 0.0% | 0.00% | 0.0% |
| Q1 2017 | $6,000 | -14.3% | 400 | 0.0% | 0.00% | -33.3% |
| Q4 2016 | $7,000 | -12.5% | 400 | 0.0% | 0.00% | 0.0% |
| Q3 2016 | $8,000 | +33.3% | 400 | 0.0% | 0.00% | 0.0% |
| Q2 2016 | $6,000 | – | 400 | – | 0.00% | – |
Download | ||||||
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% |