Hong Kong billionaire Li Ka-shing’s firm is selling its stake in the parent company of fintech upstart AMTD Digital, according to a statement released Thursday, after the company enjoyed a massive rally this week. Hong Kong-based AMTD Digital was worth more than $203 billion when New York markets closed on Wednesday, making it the world’s fifth-biggest financial company on paper, Bloomberg reported. AMTD Digital was listed just three weeks ago, and reported $25 million in revenue for the financial year that ended in April 2021. Li’s CK Group said in a statement that it holds less than four percent of…