AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 211 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2022. The put-call ratio across all filers is 0.20 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $855 | -1.4% | 18,600 | +23.2% | 0.00% | 0.0% |
| Q2 2023 | $867 | +69.3% | 15,100 | -17.5% | 0.00% | +100.0% |
| Q4 2022 | $512 | -99.9% | 18,300 | -33.0% | 0.00% | -50.0% |
| Q3 2022 | $767,000 | +2.1% | 27,300 | +26.4% | 0.00% | +33.3% |
| Q2 2022 | $751,000 | +295.3% | 21,600 | +307.5% | 0.00% | +200.0% |
| Q1 2022 | $190,000 | +74.3% | 5,300 | +12.8% | 0.00% | – |
| Q4 2021 | $109,000 | +22.5% | 4,700 | 0.0% | 0.00% | – |
| Q3 2021 | $89,000 | +8.5% | 4,700 | +14.6% | 0.00% | – |
| Q2 2021 | $82,000 | -94.1% | 4,100 | -94.1% | 0.00% | -100.0% |
| Q3 2019 | $1,384,000 | +88.0% | 69,800 | +100.0% | 0.00% | 0.0% |
| Q2 2019 | $736,000 | +12.7% | 34,900 | +9.1% | 0.00% | 0.0% |
| Q1 2019 | $653,000 | +10.5% | 32,000 | +7.7% | 0.00% | 0.0% |
| Q4 2018 | $591,000 | +24.9% | 29,700 | +20.7% | 0.00% | +50.0% |
| Q3 2018 | $473,000 | +7.0% | 24,600 | -15.2% | 0.00% | 0.0% |
| Q2 2018 | $442,000 | -10.7% | 29,000 | +9.8% | 0.00% | 0.0% |
| Q1 2018 | $495,000 | +4400.0% | 26,400 | +4300.0% | 0.00% | – |
| Q4 2017 | $11,000 | -97.2% | 600 | -97.2% | 0.00% | -100.0% |
| Q2 2017 | $389,000 | -31.0% | 21,800 | -44.0% | 0.00% | 0.0% |
| Q1 2017 | $564,000 | -21.2% | 38,900 | 0.0% | 0.00% | -33.3% |
| Q4 2016 | $716,000 | -2.8% | 38,900 | 0.0% | 0.00% | 0.0% |
| Q3 2016 | $737,000 | -4.5% | 38,900 | -18.8% | 0.00% | 0.0% |
| Q2 2016 | $772,000 | +41.4% | 47,900 | +5.3% | 0.00% | +50.0% |
| Q1 2016 | $546,000 | -15.6% | 45,500 | 0.0% | 0.00% | -33.3% |
| Q4 2015 | $647,000 | +21.8% | 45,500 | 0.0% | 0.00% | 0.0% |
| Q3 2015 | $531,000 | -33.5% | 45,500 | 0.0% | 0.00% | -25.0% |
| Q2 2015 | $799,000 | – | 45,500 | – | 0.00% | – |
| Q1 2015 | $0 | -100.0% | 0 | -100.0% | 0.00% | – |
| Q4 2014 | $37,000 | -50.0% | 3,200 | -50.0% | 0.00% | – |
| Q3 2014 | $74,000 | – | 6,400 | – | 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% |