目前共有 10 家機構持有 MBOX，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 |
|---|---|---|
| Freedom Day Solutions, LLC | US$1.1億 | 30.72% |
| HighTower Advisors, LLC | US$68.7萬 | 0.00% |
| MORGAN STANLEY | US$39.5萬 | 0.00% |
| SAPIENT CAPITAL LLC | US$23.3萬 | 0.00% |
| LaSalle St. Investment Advisors, LLC | US$22.6萬 | 0.03% |
| Ethos Financial Group, LLC | US$22.2萬 | 0.02% |
| Cetera Investment Advisers | US$21.7萬 | 0.00% |
| ROYAL BANK OF CANADA | US$13.7萬 | 0.00% |
| UBS Group AG | US$5.9萬 | 0.00% |
| JPMORGAN CHASE & CO | US$5.1萬 | 0.00% |