The stock market faces significant pressure as fears surrounding artificial intelligence and competition from China lead to a widespread sell-off in chip stocks. The South Korean KOSPI index experienced its largest decline since March, sinking over 10% amid heavy selling of semiconductor shares. This downturn extends to U.S. tech stocks, with Nasdaq futures also falling as investors shift their focus ahead of impending earnings reports. Concerns about declining AI spending and a potential global tech downturn are contributing to a mixed performance in world markets, with Asian stocks suffering notable losses.