| Stack HK Limited | Private company limited by shares | Live |
| Stack Asia Limited | Private company limited by shares | Dissolved |
| STACK Asia Limited | Private company limited by shares | Live |
| STACK CONCEPTS LIMITED | Private company limited by shares | Live |
| Lead Stack Limited | Private company limited by shares | Live |
| STACK SOLUTIONS COMPANY LIMITED | Private company limited by shares | Live |
| StackCanary Technology Limited | | Live |
| Stack-Cup HK Limited | Private company limited by shares | Live |
| Stackdata Joy HK Limited | Private company limited by shares | Live |
| Stackdata (Hong Kong) Limited | Private company limited by shares | Live |
| ROLF STACKER ASSOCIATES ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| Stacker Market Limited | | Live |
| STACKER SYSTEM LIMITED | Private company limited by shares | Live |
| STACKFIELD LIMITED | Private company limited by shares | Dissolved |
| STACKFLO LIMITED | Private company limited by shares | Live |
| HONG KONG SPORT STACKING ASSOCIATION LIMITED | Company limited by guarantee | Live |
| STACKPOOL LIMITED | Private company limited by shares | Dissolved |
| STACKPOOLE LIMITED | Private company limited by shares | Dissolved |
| stacksto HK Limited | Private company limited by shares | Live |
| Stacktech Limited | Private company limited by shares | Live |
| StackTeck Systems Asia Limited | Private company limited by shares | Live |
| STACKTREK LIMITED | Private company limited by shares | Live |
| STACKWALL CAPITAL LIMITED | Private company limited by shares | Live |
| StackWerks Research Limited | Private company limited by shares | Live |
| STACKYARD INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |