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 | $422 | +10.2% | 9,187 | +37.2% | 0.00% | – |
| Q2 2023 | $383 | +152.0% | 6,696 | +65.0% | 0.00% | – |
| Q1 2023 | $152 | -10.1% | 4,059 | -32.7% | 0.00% | – |
| Q4 2022 | $169 | -99.9% | 6,033 | +13.2% | 0.00% | – |
| Q3 2022 | $149,000 | +6.4% | 5,331 | +31.9% | 0.00% | – |
| Q2 2022 | $140,000 | +105.9% | 4,043 | +110.9% | 0.00% | – |
| Q1 2022 | $68,000 | +61.9% | 1,917 | +3.8% | 0.00% | – |
| Q4 2021 | $42,000 | -40.0% | 1,846 | -46.9% | 0.00% | – |
| Q2 2021 | $70,000 | +22.8% | 3,479 | +21.6% | 0.00% | – |
| Q4 2020 | $57,000 | +23.9% | 2,861 | +16.5% | 0.00% | – |
| Q3 2020 | $46,000 | +35.3% | 2,456 | +35.5% | 0.00% | – |
| Q4 2019 | $34,000 | +54.5% | 1,812 | +62.2% | 0.00% | – |
| Q3 2019 | $22,000 | – | 1,117 | – | 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% |