| 季度 | 持股数 | 市值（亿美元） |
|---|---|---|
| 2020 Q1 | 41,909,000 | 5.1 |
| 2019 Q4 | 42,500,000 | 12.2 |
| 2019 Q3 | 43,700,000 | 11.8 |
| 2019 Q2 | 43,700,000 | 14.3 |
| 2019 Q1 | 43,700,000 | 13.9 |
| 2018 Q4 | 43,700,000 | 14.0 |
| 2018 Q3 | 43,700,000 | 18.1 |
| 2018 Q2 | 44,700,000 | 17.0 |
| 2018 Q1 | 46,000,000 | 23.9 |
| 2017 Q4 | 46,000,000 | 23.9 |
| 2017 Q3 | 47,000,000 | 22.3 |
| 2017 Q2 | 47,000,000 | 23.7 |
| 2017 Q1 | 49,278,854 | 20.8 |
| 2016 Q4 | 45,544,854 | 21.3 |
