A billionaire Wall Street financier who notoriously lost tens of billions in a matter of days has returned to court for his blockbuster fraud trial. Sung Kook 'Bill' Hwang, 60, the founder of Archegos Capital Management, is alleged to have triggered over $100 billion in shareholder losses when his family office fund failed to meet margin calls in March 2021. He was arrested in April 2022 and charged with fraud, racketeering and conspiracy, as prosecutors claim he carried out a scheme to defraud investors by lying about his firm's portfolio, which at one point stood at over $100 billion. If...