AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 94 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2015. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $668 | -100.0% | 23,870 | -77.7% | 0.00% | -81.2% |
| Q3 2022 | $3,008,000 | -32.8% | 107,173 | -16.7% | 0.02% | -30.4% |
| Q2 2022 | $4,477,000 | +13.4% | 128,734 | +16.9% | 0.02% | +43.8% |
| Q1 2022 | $3,949,000 | +639.5% | 110,148 | +378.2% | 0.02% | +700.0% |
| Q4 2021 | $534,000 | +52.6% | 23,035 | +24.5% | 0.00% | +100.0% |
| Q3 2021 | $350,000 | -82.5% | 18,502 | -81.4% | 0.00% | -87.5% |
| Q2 2021 | $2,004,000 | +767.5% | 99,435 | +688.0% | 0.01% | +700.0% |
| Q1 2021 | $231,000 | +106.2% | 12,619 | +127.2% | 0.00% | – |
| Q4 2020 | $112,000 | -66.2% | 5,554 | -68.6% | 0.00% | -100.0% |
| Q3 2020 | $331,000 | -48.4% | 17,672 | -38.3% | 0.00% | -66.7% |
| Q2 2020 | $642,000 | +555.1% | 28,635 | +464.1% | 0.00% | – |
| Q4 2019 | $98,000 | -87.6% | 5,076 | -87.2% | 0.00% | -100.0% |
| Q3 2019 | $788,000 | +795.5% | 39,713 | +845.5% | 0.00% | – |
| Q2 2019 | $88,000 | +39.7% | 4,200 | +31.2% | 0.00% | – |
| Q4 2018 | $63,000 | -79.1% | 3,202 | -83.9% | 0.00% | -100.0% |
| Q2 2018 | $302,000 | -90.4% | 19,841 | -88.2% | 0.00% | -92.9% |
| Q1 2018 | $3,152,000 | -4.3% | 168,084 | -1.9% | 0.01% | 0.0% |
| Q4 2017 | $3,295,000 | -5.3% | 171,262 | -12.1% | 0.01% | -6.7% |
| Q3 2017 | $3,481,000 | -40.7% | 194,797 | -40.8% | 0.02% | -44.4% |
| Q2 2017 | $5,872,000 | -29.1% | 328,807 | -42.4% | 0.03% | -28.9% |
| Q1 2017 | $8,277,000 | -70.1% | 570,814 | -62.0% | 0.04% | -71.6% |
| Q4 2016 | $27,668,000 | -7.3% | 1,502,151 | -4.6% | 0.13% | -9.5% |
| Q3 2016 | $29,858,000 | +126.3% | 1,573,986 | +92.3% | 0.15% | +120.9% |
| Q2 2016 | $13,195,000 | +143.1% | 818,620 | +81.0% | 0.07% | +148.1% |
| Q1 2016 | $5,428,000 | +20.9% | 452,371 | +43.4% | 0.03% | +17.4% |
| Q4 2015 | $4,490,000 | +1220.6% | 315,555 | +982.4% | 0.02% | +1050.0% |
| Q3 2015 | $340,000 | – | 29,153 | – | 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% |