Global 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 be ahead, after a run of record stock market highs led some companies to appear overvalued . In the US the tech focused Nasdaq and the S&P 500 suffered their largest one day percentage drop in almost a month on Tuesday. Technology...
