Drop in US, Asia and Europe follows warning from bank bosses that market correction could lie aheadBusiness live – latest updatesGlobal stock markets have fallen sharply amid concerns that a boom in valuations of artificial intelligence (AI) companies could be rapidly cooling.Markets in the US, Asia and Europe have fallen after bank bosses warned a serious stock market correction could lie ahead, after a run of record stock market highs led some companies to appear overvalued. Continue reading...