AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q3 2021. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $985,290 | -23.6% | 21,424 | -4.5% | 0.00% | -20.0% |
| Q2 2023 | $1,288,823 | +65.7% | 22,426 | +8.1% | 0.01% | +66.7% |
| Q1 2023 | $777,975 | +104186.2% | 20,746 | -22.1% | 0.00% | 0.0% |
| Q4 2022 | $746 | -0.3% | 26,639 | 0.0% | 0.00% | -25.0% |
| Q3 2022 | $748 | -99.9% | 26,639 | -4.4% | 0.00% | 0.0% |
| Q2 2022 | $969,000 | +94.2% | 27,867 | +100.6% | 0.00% | +100.0% |
| Q1 2022 | $499,000 | +81.5% | 13,895 | +17.9% | 0.00% | +100.0% |
| Q4 2021 | $275,000 | +22.2% | 11,789 | 0.0% | 0.00% | 0.0% |
| Q3 2021 | $225,000 | -14.4% | 11,789 | -9.6% | 0.00% | 0.0% |
| Q2 2021 | $263,000 | +10.0% | 13,045 | 0.0% | 0.00% | 0.0% |
| Q1 2021 | $239,000 | -5.9% | 13,045 | +3.5% | 0.00% | 0.0% |
| Q4 2020 | $254,000 | +18.1% | 12,609 | +9.7% | 0.00% | 0.0% |
| Q3 2020 | $215,000 | -16.7% | 11,493 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $258,000 | +41.0% | 11,493 | -6.6% | 0.00% | 0.0% |
| Q1 2020 | $183,000 | -22.8% | 12,303 | 0.0% | 0.00% | 0.0% |
| Q4 2019 | $237,000 | -63.3% | 12,303 | -62.2% | 0.00% | -66.7% |
| Q3 2019 | $646,000 | +101.2% | 32,577 | +114.1% | 0.00% | +50.0% |
| Q2 2019 | $321,000 | +6.6% | 15,218 | +3.3% | 0.00% | +100.0% |
| Q1 2019 | $301,000 | -25.9% | 14,725 | -27.9% | 0.00% | -50.0% |
| Q4 2018 | $406,000 | +6.3% | 20,423 | +2.9% | 0.00% | 0.0% |
| Q3 2018 | $382,000 | 0.0% | 19,853 | -20.8% | 0.00% | 0.0% |
| Q2 2018 | $382,000 | -21.4% | 25,065 | -3.4% | 0.00% | 0.0% |
| Q1 2018 | $486,000 | -12.0% | 25,941 | -9.5% | 0.00% | 0.0% |
| Q4 2017 | $552,000 | -2.8% | 28,665 | -9.8% | 0.00% | -33.3% |
| Q3 2017 | $568,000 | -6.0% | 31,786 | -5.9% | 0.00% | 0.0% |
| Q2 2017 | $604,000 | +23.3% | 33,795 | 0.0% | 0.00% | +50.0% |
| Q1 2017 | $490,000 | -0.2% | 33,795 | +26.7% | 0.00% | -33.3% |
| Q4 2016 | $491,000 | -3.0% | 26,675 | 0.0% | 0.00% | +50.0% |
| Q3 2016 | $506,000 | – | 26,675 | – | 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% |