AI Boom Adds Trillions to Tech Giants as Apple, Nvidia and Samsung Surge

In the ​world's 20 most valuable companies including other ​sectors, ⁠banking group JPMorgan Chase and retailing giant Walmart saw the biggest falls in market capitalisation in May, by $130.47 ⁠billion ​and $37.3 billion, respectively, to $921 billion ​and $802 billion.