目前共有 8 家機構持有 XB，以下依持股市值由高至低排序。
| 主要持有機構 | 總市值 | 平均佔比 |
|---|---|---|
| Municipal Employees' Retirement System of Michigan | US$1039.6萬 | 0.12% |
| Cetera Investment Advisers | US$324.3萬 | 0.00% |
| Strait & Sound Wealth Management LLC | US$191.9萬 | 0.71% |
| ENVESTNET ASSET MANAGEMENT INC | US$112.0萬 | 0.00% |
| JANE STREET GROUP, LLC | US$83.6萬 | 0.00% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | US$21.2萬 | 0.00% |
| Nemes Rush Group LLC | US$14.4萬 | 0.01% |
| BANK OF MONTREAL /CAN/ | US$1208.0 | 0.00% |