AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $3,927,546 | -5.9% | 85,400 | +17.6% | 0.01% | -9.1% |
| Q2 2023 | $4,172,322 | +88.3% | 72,600 | +22.8% | 0.01% | +83.3% |
| Q1 2023 | $2,216,250 | -1.6% | 59,100 | -26.5% | 0.01% | 0.0% |
| Q4 2022 | $2,252,808 | -11.5% | 80,400 | -11.3% | 0.01% | -14.3% |
| Q3 2022 | $2,546,000 | -34.3% | 90,600 | -18.7% | 0.01% | -36.4% |
| Q2 2022 | $3,876,000 | +355.5% | 111,400 | +370.0% | 0.01% | +450.0% |
| Q1 2022 | $851,000 | +108.6% | 23,700 | +35.4% | 0.00% | +100.0% |
| Q4 2021 | $408,000 | +29.1% | 17,500 | +5.4% | 0.00% | 0.0% |
| Q3 2021 | $316,000 | -10.0% | 16,600 | -4.6% | 0.00% | 0.0% |
| Q2 2021 | $351,000 | -50.4% | 17,400 | -54.9% | 0.00% | -50.0% |
| Q1 2021 | $707,000 | -15.3% | 38,600 | -7.0% | 0.00% | 0.0% |
| Q4 2020 | $835,000 | -71.7% | 41,500 | -73.6% | 0.00% | -75.0% |
| Q3 2020 | $2,946,000 | +566.5% | 157,100 | +604.5% | 0.01% | +700.0% |
| Q3 2019 | $442,000 | -40.0% | 22,300 | -36.1% | 0.00% | -50.0% |
| Q2 2019 | $737,000 | +45.9% | 34,900 | +41.3% | 0.00% | +100.0% |
| Q1 2019 | $505,000 | +83.6% | 24,700 | +79.0% | 0.00% | 0.0% |
| Q4 2018 | $275,000 | +20.1% | 13,800 | +13.1% | 0.00% | 0.0% |
| Q1 2018 | $229,000 | +24.5% | 12,200 | +18.4% | 0.00% | 0.0% |
| Q3 2017 | $184,000 | -22.7% | 10,300 | -22.6% | 0.00% | 0.0% |
| Q2 2017 | $238,000 | -73.0% | 13,300 | -78.1% | 0.00% | -66.7% |
| Q1 2017 | $880,000 | -45.8% | 60,700 | -31.2% | 0.00% | -50.0% |
| Q4 2016 | $1,625,000 | -17.3% | 88,200 | -14.9% | 0.01% | -25.0% |
| Q3 2016 | $1,965,000 | +4.5% | 103,600 | -11.2% | 0.01% | -20.0% |
| Q2 2016 | $1,881,000 | +28.5% | 116,700 | -4.3% | 0.01% | +25.0% |
| Q1 2016 | $1,464,000 | -13.1% | 122,000 | +3.0% | 0.01% | -20.0% |
| Q4 2015 | $1,685,000 | +12.7% | 118,438 | -6.2% | 0.01% | +11.1% |
| Q3 2015 | $1,495,000 | -51.3% | 126,302 | -27.7% | 0.01% | -62.5% |
| Q2 2015 | $3,071,000 | +718.9% | 174,701 | +596.0% | 0.02% | +700.0% |
| Q1 2015 | $375,000 | – | 25,100 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $3,649,605 | 3.75% |
| SHAKER INVESTMENTS LLC/OH | 81,287 | $2,277,662 | 1.41% |
| Mesirow Institutional Investment Management, Inc. | 374,414 | $10,491,080 | 1.38% |
| OBERWEIS ASSET MANAGEMENT INC/ | 134,000 | $3,754,680 | 0.80% |
| Portolan Capital Management | 270,791 | $7,587,564 | 0.75% |
| Hillsdale Investment Management Inc. | 172,238 | $4,826,109 | 0.41% |
| Capital Impact Advisors, LLC | 14,669 | $411,025 | 0.40% |
| Watershed Asset Management, L.L.C. | 9,555 | $267,731 | 0.34% |
| Quantedge Capital Pte Ltd | 35,153 | $984,987 | 0.33% |
| FEDERATED HERMES, INC. | 3,284,217 | $92,023,760 | 0.25% |