目前共有 169 家機構持有 GRDN，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 |
|---|---|---|
| WPG Advisers, LLC | US$3314.0 | 0.00% |
| BNP PARIBAS FINANCIAL MARKETS | US$2812.1 | 0.00% |
| NISA INVESTMENT ADVISORS, LLC | US$2523.0 | 0.00% |
| GAMMA Investing LLC | US$2034.0 | 0.00% |
| Torren Management, LLC | US$1356.0 | 0.00% |
| Allworth Financial LP | US$1319.0 | 0.00% |
| Bruce G. Allen Investments, LLC | US$1280.0 | 0.00% |
| Root Financial Partners, LLC | US$942.0 | 0.00% |
| ROTHSCHILD INVESTMENT LLC | US$866.0 | 0.00% |
| SIMPLEX TRADING, LLC | US$828.0 | 0.00% |
| Advisory Services Network, LLC | US$603.0 | 0.00% |
| Stone House Investment Management, LLC | US$565.0 | 0.00% |
| Caitong International Asset Management Co., Ltd | US$565.0 | 0.00% |
| Parallel Advisors, LLC | US$452.0 | 0.00% |
| Farther Finance Advisors, LLC | US$376.0 | 0.00% |
| HARBOUR INVESTMENTS, INC. | US$361.0 | 0.00% |
| MAI Capital Management | US$226.0 | 0.00% |
| EverSource Wealth Advisors, LLC | US$188.0 | 0.00% |
| Hughes Financial Services, LLC | US$151.0 | 0.00% |