[Institutions Predict U.S. Stocks Will Plunge 21% Next Year: 'AI-Driven Market Boom May Collapse'] According to a report on the website of the U.S. magazine *Fortune* on the 13th local time, analysts claim that the U.S. stock market is in the late stages of a bubble and is set to plunge 21% next year. The breakthrough of U.S. Treasury yields above 5% will mark the beginning of a new era of monetary tightening. Investors should enjoy the last few months of 2026 while they still can, as the AI-driven stock market boom is about to collapse. The report cites James Reilly, Senior Markets Economist at the renowned UK-based economic research firm Capital Economics, who reiterated his earlier forecast: the S&P 500 index will close at 8,250 points by the end of this year, up 7.7% from its September 11 closing, but will then plunge 21% to 6,500 points by the end of 2027. (*China News Service Jingwei*)