AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 250 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 1.02 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $504,188 | -18.6% | 10,963 | +1.7% | 0.00% | 0.0% |
| Q2 2023 | $619,699 | +193.9% | 10,783 | +91.8% | 0.00% | – |
| Q1 2023 | $210,863 | -58.9% | 5,623 | -69.2% | 0.00% | -100.0% |
| Q3 2022 | $513,000 | -8.7% | 18,259 | -24.3% | 0.00% | 0.0% |
| Q4 2021 | $562,000 | -33.0% | 24,130 | -45.3% | 0.00% | -50.0% |
| Q3 2021 | $839,000 | +86.4% | 44,141 | +97.6% | 0.00% | +100.0% |
| Q2 2021 | $450,000 | -51.4% | 22,334 | -55.8% | 0.00% | -50.0% |
| Q1 2021 | $926,000 | -8.9% | 50,566 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $1,017,000 | -16.3% | 50,566 | -22.0% | 0.00% | -33.3% |
| Q3 2020 | $1,215,000 | +87.5% | 64,812 | +92.9% | 0.00% | +50.0% |
| Q4 2019 | $648,000 | -2.7% | 33,607 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $666,000 | -35.6% | 33,607 | -31.4% | 0.00% | -33.3% |
| Q2 2019 | $1,034,000 | +3.6% | 48,992 | +0.3% | 0.00% | 0.0% |
| Q1 2019 | $998,000 | +109.7% | 48,862 | +104.4% | 0.00% | +200.0% |
| Q4 2018 | $476,000 | +52.6% | 23,907 | +41.3% | 0.00% | 0.0% |
| Q4 2016 | $312,000 | -49.7% | 16,919 | -48.2% | 0.00% | -50.0% |
| Q3 2016 | $620,000 | – | 32,682 | – | 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% |