Is Big Tech’s soaring AI spending creating a bubble? Here’s what it means for stocks.

All three major U.S. stock indexes ended October on higher footing. - iStock With stocks trading near record highs, Big Tech’s soaring spending on artificial intelligence has rekindled a passionate debate among investors: Is the market in another bubble? Bulls argue that the rally in shares of tech companies, which has driven much of the market’s gains for the past two years, still has room to run. The bears warn that tech valuations have climbed too high and could collapse in a fashion that resembles th ...