目前共有 10 家機構持有 PMIO，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 |
|---|---|---|
| PRUDENTIAL FINANCIAL INC | US$2368.4萬 | 0.03% |
| MOSAIC FAMILY WEALTH PARTNERS, LLC | US$272.1萬 | 0.28% |
| JANE STREET GROUP, LLC | US$109.1萬 | 0.00% |
| FIRST UNITED BANK & TRUST | US$103.4萬 | 0.34% |
| HARBOUR INVESTMENTS, INC. | US$74.8萬 | 0.01% |
| Landmark Wealth Management, LLC | US$40.7萬 | 0.11% |
| Creative Planning | US$24.6萬 | 0.00% |
| ENVESTNET ASSET MANAGEMENT INC | US$21.0萬 | 0.00% |
| AE Wealth Management LLC | US$11.6萬 | 0.00% |
| DHJJ Financial Advisors, Ltd. | US$1010.0 | 0.00% |