AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 130 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
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 ↓ |
|---|---|---|---|
| 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% |