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 | $803 | +60.3% | 45,447 | +421.4% | 0.00% | 0.0% |
| Q2 2023 | $501 | +19.0% | 8,717 | -22.4% | 0.00% | 0.0% |
| Q1 2023 | $421 | +33.7% | 11,238 | 0.0% | 0.00% | 0.0% |
| Q4 2022 | $315 | -99.9% | 11,238 | 0.0% | 0.00% | 0.0% |
| Q3 2022 | $316,000 | -19.2% | 11,238 | 0.0% | 0.00% | 0.0% |
| Q2 2022 | $391,000 | -3.0% | 11,238 | 0.0% | 0.00% | 0.0% |
| Q1 2022 | $403,000 | +25.9% | 11,238 | -18.1% | 0.00% | +100.0% |
| Q4 2021 | $320,000 | +22.6% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q3 2021 | $261,000 | -5.8% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q2 2021 | $277,000 | +10.4% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q1 2021 | $251,000 | -9.1% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $276,000 | +7.4% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $257,000 | -16.6% | 13,727 | 0.0% | 0.00% | -50.0% |
| Q2 2020 | $308,000 | +51.0% | 13,727 | 0.0% | 0.00% | +100.0% |
| Q1 2020 | $204,000 | -23.0% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $265,000 | -2.6% | 13,727 | 0.0% | 0.00% | -50.0% |
| Q3 2019 | $272,000 | -6.2% | 13,727 | 0.0% | 0.00% | 0.0% |
| Q2 2019 | $290,000 | -53.9% | 13,727 | -55.4% | 0.00% | -50.0% |
| Q1 2019 | $629,000 | – | 30,788 | – | 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% |