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 | ||||
|---|---|---|---|---|---|---|
| Q4 2023 | $1,326,064 | +35.6% | 21,440 | +0.8% | 0.04% | +25.0% |
| Q3 2023 | $978,253 | -63.1% | 21,271 | -53.9% | 0.03% | -56.9% |
| Q2 2023 | $2,648,965 | +51.6% | 46,093 | -1.1% | 0.06% | +35.4% |
| Q1 2023 | $1,746,863 | +67.8% | 46,583 | +25.4% | 0.05% | +60.0% |
| Q4 2022 | $1,040,999 | +2.9% | 37,152 | +3.2% | 0.03% | -9.1% |
| Q3 2022 | $1,012,000 | -46.4% | 36,017 | -33.7% | 0.03% | -40.0% |
| Q2 2022 | $1,889,000 | -0.1% | 54,293 | +3.1% | 0.06% | +44.7% |
| Q1 2022 | $1,891,000 | +224.9% | 52,681 | +110.9% | 0.04% | +245.5% |
| Q4 2021 | $582,000 | -50.1% | 24,983 | -56.8% | 0.01% | -70.3% |
| Q2 2021 | $1,166,000 | +21.6% | 57,851 | +10.5% | 0.04% | +2.8% |
| Q1 2021 | $959,000 | +188.0% | 52,334 | +215.9% | 0.04% | +140.0% |
| Q4 2020 | $333,000 | +12.5% | 16,565 | +4.8% | 0.02% | -11.8% |
| Q3 2020 | $296,000 | – | 15,809 | – | 0.02% | – |
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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% |