| OPTIMUM SUCCESS LIMITED | Private company limited by shares | Dissolved |
| Gold Tech Optimum Limited | Private company limited by shares | Dissolved |
| OPTIMUM TOYS LIMITED | Private company limited by shares | Dissolved |
| OPTIMUM TRADE LIMITED | Private company limited by shares | Live |
| OPTIMUM VISION LIMITED | Private company limited by shares | Dissolved |
| OPTIMUM VISION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WEALTH OPTIMUM LIMITED | Private company limited by shares | Live |
| OptimumFlow Limited | | Live |
| OPTIMUMNANO ENERGY CO., LIMITED | Private company limited by shares | Live |
| OptimumX Company Limited | Private company limited by shares | Live |
| OPTIMUS LIMITED | Private company limited by shares | Dissolved |
| OPTIMUS LIMITED | Private company limited by shares | Live |
| Optimus HK Limited | Private company limited by shares | Live |
| Optimus Capital Limited | Private company limited by shares | Live |
| OPTIMUS CHINA LIMITED | Private company limited by shares | Dissolved |
| OPTIMUS ASIAN SHIPPING CO., LIMITED | Private company limited by shares | Live |
| OPTIMUS DISPLAY CO., LIMITED | Private company limited by shares | Live |
| OPTIMUS BUSINESS AND CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| Optimus Consulting (Asia) Limited | Private company limited by shares | Live |
| OPTIMUS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Optimus Enterprises Limited | | Live |
| OPTIMUS GLOBAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| Optimus Global Solutions Limited | Private company limited by shares | Live |
| Optimus Golf Limited | | Live |
| Optimus Group Limited | Private company limited by shares | Dissolved |
| Optimus Investment Limited | Private company limited by shares | Live |
| OPTIMUS ASIA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Optimus Energy (Hong Kong) Limited | Private company limited by shares | Live |
| Optimus LED Lighting Limited | Private company limited by shares | Live |
| OPTIMUS LIGHTING LIMITED | Private company limited by shares | Live |
| OPTIMUS CAPITAL MANAGEMENT INC LIMITED | Private company limited by shares | Dissolved |
| HY Optimus Capital Management Limited | | Live |
| OPTIMUS MEDICAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| Optimus Medical Imagings Limited | Private company limited by shares | Live |
| Optimus Network Solutions Limited | Private company limited by shares | Live |
| Ocean Optimus Limited | Private company limited by shares | Live |
| OPTIMUS PACIFIC LIMITED | Private company limited by shares | Live |
| Optimus Pathways Company Limited | | Live |
| Optimus Planning Company Limited | Private company limited by shares | Live |
| OPTIMUS PROPERTIES LIMITED | Private company limited by shares | Live |
| OPTIMUS REALTY LIMITED | Private company limited by shares | Live |
| OPTIMUS RICH LIMITED | Private company limited by shares | Live |
| OPTIMUS SEARCH LIMITED | Private company limited by shares | Live |
| OPTIMUS SOLUTIONS LIMITED | Private company limited by shares | Live |
| Spina Optimus Limited | Private company limited by shares | Live |
| OPTIMUS DE TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Optimus Technology Limited | Private company limited by shares | Live |
| OPTIMUS TRADING LIMITED | Private company limited by shares | Live |
| Optimus Trading Company Limited | | Live |
| OPTIMUS TRADING PRIVATE LIMITED | Private company limited by shares | Live |
| Optimuszone Limited | Private company limited by shares | Live |
| OPTIMUX (ASIA) LIMITED | Private company limited by shares | Live |
| OPTIMUX VALVES CORPORATION LIMITED | Private company limited by shares | Live |