The sudden and stunning collapse of the once-obscure private investment firm Archegos Capital Management sent shock waves through the stock market last year and left Wall Street banks with $10 billion in losses almost overnight.

It also kick-started one of the highest-profile white-collar criminal investigations in years. On Wednesday, federal prosecutors and securities regulators laid out what they had found: a stock manipulation scheme they called staggering in its size and brazen in its execution.

Archegos stock manipulation scheme was ‘historic,’ U.S. attorney says.

Archegos owner Bill Hwang, former CFO charged with securities fraud

Archegos owner Bill Hwang and former CFO Halligan plead not guilty to U.S. fraud charges

The Man Who Collapsed Wall Street

Archegos Founder Bill Hwang, Former CFO Charged With Securities Fraud