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 | $1,094 | -37.1% | 23,793 | -21.4% | 0.00% | 0.0% |
| Q2 2023 | $1,738 | +12.3% | 30,257 | -26.8% | 0.00% | 0.0% |
| Q1 2023 | $1,548 | -12.2% | 41,314 | -34.3% | 0.00% | 0.0% |
| Q4 2022 | $1,764 | -99.9% | 62,930 | +13.4% | 0.00% | -50.0% |
| Q3 2022 | $1,559,000 | -30.2% | 55,504 | -13.4% | 0.00% | +100.0% |
| Q2 2022 | $2,232,000 | +18.8% | 64,118 | +22.5% | 0.00% | 0.0% |
| Q1 2022 | $1,879,000 | -45.1% | 52,345 | -64.4% | 0.00% | 0.0% |
| Q4 2021 | $3,420,000 | +182.2% | 146,860 | +130.1% | 0.00% | 0.0% |
| Q3 2021 | $1,212,000 | +31.6% | 63,817 | +39.7% | 0.00% | – |
| Q2 2021 | $921,000 | -33.1% | 45,686 | -39.2% | 0.00% | -100.0% |
| Q1 2021 | $1,377,000 | -6.1% | 75,117 | +3.1% | 0.00% | 0.0% |
| Q4 2020 | $1,467,000 | +13.7% | 72,888 | +6.0% | 0.00% | 0.0% |
| Q3 2020 | $1,290,000 | +2.5% | 68,779 | +22.7% | 0.00% | 0.0% |
| Q2 2020 | $1,258,000 | +96.0% | 56,068 | +29.6% | 0.00% | 0.0% |
| Q1 2020 | $642,000 | -39.4% | 43,275 | -21.3% | 0.00% | 0.0% |
| Q4 2019 | $1,060,000 | +42.9% | 54,961 | +47.0% | 0.00% | – |
| Q3 2019 | $742,000 | -15.0% | 37,397 | -9.7% | 0.00% | -100.0% |
| Q2 2019 | $873,000 | +37.7% | 41,401 | +33.3% | 0.00% | – |
| Q1 2019 | $634,000 | +139.2% | 31,049 | +133.2% | 0.00% | – |
| Q4 2018 | $265,000 | -63.8% | 13,316 | -65.1% | 0.00% | -100.0% |
| Q3 2018 | $733,000 | +163.7% | 38,112 | +108.4% | 0.00% | – |
| Q2 2018 | $278,000 | -15.2% | 18,289 | +4.3% | 0.00% | – |
| Q1 2018 | $328,000 | +192.9% | 17,530 | +203.1% | 0.00% | – |
| Q4 2017 | $112,000 | +646.7% | 5,784 | +586.9% | 0.00% | – |
| Q3 2017 | $15,000 | -85.7% | 842 | -85.7% | 0.00% | – |
| Q2 2017 | $105,000 | +78.0% | 5,868 | +46.8% | 0.00% | – |
| Q1 2017 | $59,000 | -96.3% | 3,997 | -95.4% | 0.00% | -100.0% |
| Q4 2016 | $1,615,000 | +112.5% | 87,692 | +118.7% | 0.00% | +100.0% |
| Q3 2016 | $760,000 | +708.5% | 40,102 | +585.2% | 0.00% | – |
| Q2 2016 | $94,000 | +184.8% | 5,853 | +116.2% | 0.00% | – |
| Q1 2016 | $33,000 | +266.7% | 2,707 | +281.3% | 0.00% | – |
| Q4 2015 | $9,000 | -94.2% | 710 | -95.0% | 0.00% | – |
| Q3 2015 | $156,000 | +1200.0% | 14,152 | +1921.7% | 0.00% | – |
| Q2 2015 | $12,000 | +9.1% | 700 | -10.7% | 0.00% | – |
| Q1 2015 | $11,000 | +37.5% | 784 | +8.0% | 0.00% | – |
| Q4 2014 | $8,000 | – | 726 | – | 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% |