Who is billionaire Bill Hwang, whose fund's collapse may cost banks $6 bn?

Billionaire Bill Hwang is the ex-Manager of Tiger Asia fund and the Founder of US-based Archegos Capital Management. Archegos Capital made big bets on public stocks but was forced to liquidate over $20 billion in shares when it failed to meet the margin call. Archegos' collapse may cause global banks like Goldman, Morgan Stanley, Deutsche and others lose $6 billion.