Market Volatility Peaks as Fed Meeting Looms and AI Bubble Fears Intensify

Wall Street is navigating a period of extreme turbulence, characterized by experts as a 'silly season' of volatility, just as the Federal Reserve prepares for a pivotal meeting. Capital Economics has issued a stark warning, labeling the current AI trade a 'late-stage bubble.' Their analysis suggests the S&P 500 could face a correction of at least 30% next year, a decline that would rank among the seven worst market crashes in the last century. This skepticism is mirrored by behavioral economist Owen Lamont, who noted that recent single-day fluctuations in tech giants like Microsoft, Apple, Amazon, and Meta have reached historic extremes. Lamont’s dispersion index, which tracks individual stock swings, recently hit its third-highest level in over 2,850 trading days, surpassed only by the 2020 vaccine news and the January 2025 DeepSeek shock. Despite these concerns, Morgan Stanley remains optimistic, maintaining a year-end S&P 500 target of 8,000. Chief Investment Officer Lisa Shalett argues that the market is adjusting rationally, noting that the index's forward price-to-earnings ratio has compressed from 22.5x to 19.5x due to robust earnings growth exceeding 30%. Morgan Stanley contends that AI-related capital expenditure remains largely immune to interest rate hikes, setting the stage for a high-stakes standoff as the Federal Reserve convenes this Wednesday.