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 2021 | $36,000 | +227.3% | 1,562 | +178.9% | 0.00% | +300.0% |
Q4 2020 | $11,000 | +22.2% | 560 | +21.0% | 0.00% | 0.0% |
Q3 2020 | $9,000 | -97.2% | 463 | -96.8% | 0.00% | -97.7% |
Q2 2020 | $324,000 | +383.6% | 14,435 | +326.1% | 0.04% | +760.0% |
Q4 2018 | $67,000 | +4.7% | 3,388 | -1.9% | 0.01% | +400.0% |
Q4 2016 | $64,000 | -92.4% | 3,452 | -92.2% | 0.00% | -94.4% |
Q3 2016 | $842,000 | – | 44,369 | – | 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% |