AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $17,076,547 | +58.1% | 371,310 | +97.6% | 0.08% | +64.7% |
| Q2 2023 | $10,800,854 | +294.9% | 187,939 | +157.6% | 0.05% | +264.3% |
| Q1 2023 | $2,735,400 | +3.2% | 72,944 | -22.9% | 0.01% | -6.7% |
| Q4 2022 | $2,651,280 | -41.8% | 94,621 | -41.7% | 0.02% | -40.0% |
| Q3 2022 | $4,559,000 | -26.0% | 162,258 | -8.3% | 0.02% | -21.9% |
| Q2 2022 | $6,157,000 | +82.3% | 176,982 | +88.1% | 0.03% | +68.4% |
| Q1 2022 | $3,377,000 | +295.4% | 94,070 | +106.6% | 0.02% | +171.4% |
| Q3 2020 | $854,000 | – | 45,541 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $4,884,375 | 4.79% |
| SHAKER INVESTMENTS LLC/OH | 82,253 | $3,084,488 | 1.72% |
| Mesirow Institutional Investment Management, Inc. | 325,669 | $12,212,588 | 1.33% |
| Portolan Capital Management | 340,593 | $12,772,238 | 1.22% |
| OBERWEIS ASSET MANAGEMENT INC/ | 178,200 | $6,682,500 | 1.04% |
| Granite Investment Partners, LLC | 536,821 | $20,130,788 | 0.84% |
| Capital Impact Advisors, LLC | 15,304 | $573,900 | 0.70% |
| Hillsdale Investment Management Inc. | 155,038 | $5,813,926 | 0.50% |
| GLOBEFLEX CAPITAL L P | 89,192 | $3,344,700 | 0.41% |
| Jackson Creek Investment Advisors LLC | 25,877 | $970 | 0.41% |