AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 91 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2015. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,233,866 | -28.2% | 26,829 | -10.2% | 0.01% | -27.8% |
| Q2 2023 | $1,717,606 | +1.6% | 29,887 | -33.7% | 0.02% | -5.3% |
| Q1 2023 | $1,690,275 | +23.3% | 45,074 | -7.8% | 0.02% | +18.8% |
| Q4 2022 | $1,370,486 | -0.6% | 48,911 | -0.4% | 0.02% | -11.1% |
| Q3 2022 | $1,379,000 | -21.2% | 49,090 | -2.5% | 0.02% | -18.2% |
| Q2 2022 | $1,751,000 | -4.6% | 50,339 | -1.6% | 0.02% | +10.0% |
| Q1 2022 | $1,836,000 | +3364.2% | 51,134 | +1604.5% | 0.02% | +1900.0% |
| Q2 2017 | $53,000 | +15.2% | 3,000 | -5.5% | 0.00% | 0.0% |
| Q1 2017 | $46,000 | -72.1% | 3,175 | -64.6% | 0.00% | -75.0% |
| Q4 2016 | $165,000 | -2.9% | 8,975 | 0.0% | 0.00% | 0.0% |
| Q3 2016 | $170,000 | +18.1% | 8,975 | 0.0% | 0.00% | 0.0% |
| Q2 2016 | $144,000 | +26.3% | 8,975 | -5.8% | 0.00% | 0.0% |
| Q1 2016 | $114,000 | -6.6% | 9,525 | +10.4% | 0.00% | 0.0% |
| Q4 2015 | $122,000 | +2340.0% | 8,625 | +1816.7% | 0.00% | – |
| Q3 2015 | $5,000 | -28.6% | 450 | 0.0% | 0.00% | – |
| Q2 2015 | $7,000 | – | 450 | – | 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% |