目前共有 9 家機構持有 MARO，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 |
|---|---|---|
| Tidal Investments LLC | US$1766.9萬 | 0.04% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | US$23.4萬 | 0.00% |
| JANE STREET GROUP, LLC | US$7.9萬 | 0.00% |
| CITADEL ADVISORS LLC | US$7.7萬 | 0.00% |
| Benchmark Financial, LLC | US$5.3萬 | 0.05% |
| WINEBRENNER CAPITAL MANAGEMENT LLC | US$5.3萬 | 0.03% |
| GROUP ONE TRADING LLC | US$3156.0 | 0.00% |
| HOLLENCREST CAPITAL MANAGEMENT | US$27.0 | 0.00% |
| WELLS FARGO & COMPANY/MN | US$8.0 | 0.00% |