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 | $422 | +10.2% | 9,187 | +37.2% | 0.00% | – |
| Q2 2023 | $383 | +152.0% | 6,696 | +65.0% | 0.00% | – |
| Q1 2023 | $152 | -10.1% | 4,059 | -32.7% | 0.00% | – |
| Q4 2022 | $169 | -99.9% | 6,033 | +13.2% | 0.00% | – |
| Q3 2022 | $149,000 | +6.4% | 5,331 | +31.9% | 0.00% | – |
| Q2 2022 | $140,000 | +105.9% | 4,043 | +110.9% | 0.00% | – |
| Q1 2022 | $68,000 | +61.9% | 1,917 | +3.8% | 0.00% | – |
| Q4 2021 | $42,000 | -40.0% | 1,846 | -46.9% | 0.00% | – |
| Q2 2021 | $70,000 | +22.8% | 3,479 | +21.6% | 0.00% | – |
| Q4 2020 | $57,000 | +23.9% | 2,861 | +16.5% | 0.00% | – |
| Q3 2020 | $46,000 | +35.3% | 2,456 | +35.5% | 0.00% | – |
| Q4 2019 | $34,000 | +54.5% | 1,812 | +62.2% | 0.00% | – |
| Q3 2019 | $22,000 | – | 1,117 | – | 0.00% | – |
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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% |