Regulators around the world monitor collapse of US hedge fund

Liquidation of Bill Hwang's Archegos Capital Management sparked a fire sale of more than $20bn assets

• Opinion: banks will be prompted to check hedge fund exposures

Financial regulators across the world are monitoring the collapse of the New York-based billionaire Bill Hwang's personal hedge fund.

The sudden liquidation of Hwang's Archegos Capital Management sparked a fire sale of more than $20bn assets that has left some of the world's biggest investment banks nursing billions of dollars of losses.