AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 138 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q4 2016. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $11 | +57.1% | 196 | -29.7% | 0.00% | – |
| Q4 2022 | $7 | -100.0% | 279 | -65.1% | 0.00% | – |
| Q3 2021 | $16,000 | 0.0% | 800 | 0.0% | 0.00% | – |
| Q2 2021 | $16,000 | +45.5% | 800 | +27.4% | 0.00% | – |
| Q3 2020 | $11,000 | +450.0% | 628 | +528.0% | 0.00% | – |
| Q2 2020 | $2,000 | -80.0% | 100 | -81.9% | 0.00% | – |
| Q3 2019 | $10,000 | -44.4% | 552 | -35.9% | 0.00% | – |
| Q2 2019 | $18,000 | +80.0% | 861 | +65.9% | 0.00% | – |
| Q4 2018 | $10,000 | +25.0% | 519 | +15.1% | 0.00% | – |
| Q3 2018 | $8,000 | +60.0% | 451 | +19.9% | 0.00% | – |
| Q2 2018 | $5,000 | -85.7% | 376 | -81.0% | 0.00% | -100.0% |
| Q3 2017 | $35,000 | -30.0% | 1,975 | -30.6% | 0.00% | -50.0% |
| Q2 2017 | $50,000 | -81.9% | 2,844 | -80.6% | 0.00% | -89.5% |
| Q3 2016 | $277,000 | – | 14,629 | – | 0.02% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 128,000 | $5,886,720 | 5.78% |
| Beacon Harbor Wealth Advisors, Inc. | 103,095 | $4,741 | 1.58% |
| Capital Impact Advisors, LLC | 15,304 | $703,831 | 1.18% |
| Quantedge Capital Pte Ltd | 36,389 | $1,673,530 | 0.91% |
| Mesirow Institutional Investment Management, Inc. | 183,805 | $8,453,192 | 0.86% |
| Monashee Investment Management LLC | 39,461 | $1,814,811 | 0.76% |
| OBERWEIS ASSET MANAGEMENT INC/ | 152,500 | $7,013,475 | 0.74% |
| Granite Investment Partners, LLC | 330,911 | $15,218,597 | 0.64% |
| Portolan Capital Management | 132,850 | $6,109,772 | 0.57% |
| SHAKER INVESTMENTS LLC/OH | 20,795 | $956,362 | 0.53% |