目前共有 459 家機構持有 SSD，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 |
|---|---|---|
| Vermillion Wealth Management, Inc. | US$515.0 | 0.00% |
| HFM Investment Advisors, LLC | US$515.0 | 0.00% |
| SHP Wealth Management | US$343.0 | 0.00% |
| Financial Management Professionals, Inc. | US$343.0 | 0.00% |
| USA FINANCIAL FORMULAS | US$343.0 | 0.00% |
| Mirae Asset Global Investments Co., Ltd. | US$343.0 | 0.00% |
| Hughes Financial Services, LLC | US$172.0 | 0.00% |
| HARBOUR INVESTMENTS, INC. | US$172.0 | 0.00% |
| Transamerica Financial Advisors, LLC | US$171.0 | 0.00% |