OpenAI growth concerns rattle tech stocks, S&P 500 slips from record

Wall Street’s AI trade took a reality check as a report that OpenAI had missed internal growth targets sent chipmakers and infrastructure names lower, pulling the S&P 500 off a record high and exposing how much optimism had been built into the sector.

The benchmark index, which had closed at a record on April 27, 2026, was last quoted at 7,125.42, down 0.68% from a prior close of 7,173.91 and just below its 52-week high of 7,178.74. The Nasdaq also weakened as investors shifted away from the semiconductor and AI-linked stocks that had powered much of the market’s advance.

The trigger was a report that OpenAI fell short of internal goals for new users and revenue in recent months. That shortfall revived concern about whether the company can support the enormous data-center and compute spending it has promised as it races toward a highly anticipated IPO. The issue goes beyond one private company: OpenAI sits at the center of the current AI infrastructure buildout, so any sign that growth is slowing immediately raises questions about the suppliers and partners financing the boom.

Oracle, Nvidia and Amazon have all committed billions to OpenAI, and the market reaction quickly spread beyond the startup itself. In Asia, SoftBank Group, one of OpenAI’s largest investors, fell about 10% on the news. Shares of Oracle, AMD and CoreWeave also sank, underscoring how closely public-market valuations have been tied to expectations for OpenAI’s demand for chips, cloud capacity and data-center construction.

The selloff highlighted a larger tension in markets that had been priced for near-perfect AI adoption: the more capital-intensive the buildout becomes, the more investors need proof that revenue and usage can keep pace. For now, one disappointing growth signal was enough to shake confidence across the AI supply chain and remind traders that even the strongest secular theme still has to meet the numbers.