Image source, Michael Nagle/Bloomberg via Getty ImagesByRachel ClunBusiness reporter, Reporting fromNew YorkPublished30 October 2026, 14:50 GMTUpdated 59 minutes agoTech stocks tumbled for the second day in a row as concerns rise over the hundreds of billions of dollars firms are investing in artificial intelligence (AI). Shares in Intel plummeted by 28% on Friday, while Google owner Alphabet saw its stock price continue to fall another 1.4% after a 12% plunge on Thursday.