目前共有 18 家机构持有 SIO，以下按持股市值由高至低排序。
| 主要持有机构 | 总市值 | 平均占比 |
|---|---|---|
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | US$1.5亿 | 0.81% |
| Thrivent Financial for Lutherans | US$4163.1万 | 0.08% |
| RAYMOND JAMES FINANCIAL INC | US$1640.7万 | 0.01% |
| Janney Montgomery Scott LLC | US$926.8万 | 0.02% |
| Willow Financial LLC | US$613.2万 | 6.21% |
| FFG RETIREMENT ADVISORS LLC | US$512.3万 | 2.98% |
| Brookwood Investment Group LLC | US$415.7万 | 0.51% |
| Baer Investment Advisory LLC | US$179.5万 | 0.22% |
| VICTORY FINANCIAL GROUP, LLC | US$179.5万 | 0.22% |
| CITADEL ADVISORS LLC | US$89.0万 | 0.00% |
| MML INVESTORS SERVICES, LLC | US$59.2万 | 0.00% |
| ENVESTNET ASSET MANAGEMENT INC | US$42.4万 | 0.00% |
| RHL GROUP, LLC | US$39.7万 | 0.34% |
| Acorn Wealth Advisors, LLC | US$39.2万 | 0.11% |
| JONES FINANCIAL COMPANIES LLLP | US$2.8万 | 0.00% |
| OSAIC HOLDINGS, INC. | US$1.8万 | 0.00% |
| WELLS FARGO & COMPANY/MN | US$2537.0 | 0.00% |
| DHJJ Financial Advisors, Ltd. | US$513.0 | 0.00% |