| 季度 | 持股数 | 市值（亿美元） |
|---|---|---|
| 2021 Q2 | 89,874 | 0.05 |
| 2021 Q1 | 119,648 | 0.07 |
| 2020 Q4 | 39,220 | 0.01 |
| 2020 Q3 | 17,231 | 0.00 |
| 2020 Q2 | 16,612 | 0.00 |
| 2020 Q1 | 12,354 | 0.00 |
| 2019 Q4 | 18,986 | 0.00 |
| 2019 Q3 | 26,094 | 0.00 |
| 2019 Q2 | 30,750 | 0.00 |
| 2019 Q1 | 45,165 | 0.00 |
| 2018 Q4 | 39,400 | 0.00 |
| 2018 Q3 | 36,310 | 0.00 |
| 2018 Q2 | 35,874 | 0.01 |
| 2018 Q1 | 24,935 | 0.00 |
| 2017 Q4 | 23,758 | 0.01 |
| 2017 Q3 | 25,611 | 0.01 |
| 2017 Q2 | 24,560 | 0.00 |
| 2017 Q1 | 18,514 | 0.00 |
| 2016 Q4 | 33,737 | 0.00 |