World shares ease on concerns about tech valuations

An index of global equity markets eased ‌after hitting a fresh record high on Thursday as concerns about lofty valuations of leading technology companies weighed on markets after artificial intelligence chipmaker Nvidia reported strong quarterly results.Shares on Wall Street and ‌in Europe ‌traded ⁠down as investors digested another blowout quarter from Nvidia, ​the world’s most valuable company, but worried about its market value even as it forecast that first-quarter revenue would come in at a whopping $7 ...