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 | $59,005 | -97.6% | 1,283 | -98.0% | 0.00% | -100.0% |
| Q1 2023 | $2,453,168 | -28.4% | 65,418 | -59.7% | 0.01% | -55.6% |
| Q2 2019 | $3,426,000 | +181.1% | 162,286 | +149.7% | 0.02% | +260.0% |
| Q1 2018 | $1,219,000 | -33.2% | 65,000 | -31.4% | 0.01% | -37.5% |
| Q4 2017 | $1,824,000 | -41.7% | 94,820 | -45.8% | 0.01% | -55.6% |
| Q2 2017 | $3,126,000 | – | 175,000 | – | 0.02% | – |
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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% |