Shares of Po Sing Energy (0090.HK) skyrocketed by an impressive 286.21% at the opening bell, fueled by the company's investment in Series A preferred shares issued by HashKey Holdings. This strategic move grants Po Sing Energy ownership of up to 5% of HashKey Holdings' equity. Currently, Po Sing Energy's Hong Kong-listed stock is trading at 1.970, pushing its total market capitalization to 903 million.