IBM Craters 25% in Worst Day on Record After Blindsiding Wall Street With a Q2 Miss

Shares of IBM plummeted 25% on Tuesday, the worst single-day decline in the 115-year-old company's history, after the technology giant preannounced second-quarter results that fell far short of Wall Street's expectations. The collapse erased roughly $69 billion in market value in a matter of hours and sent a chill through a technology sector that had spent the year riding an artificial-intelligence boom.

The drop eclipsed IBM's previous record decline of 23.7%, set on Oct. 19, 1987 — the "Black Monday" crash that battered global markets. This time, the wound was largely self-inflicted. In preliminary figures, IBM reported adjusted earnings of $2.93 a share on revenue of $17.2 billion, below analyst forecasts of $3.01 a share and $17.86 billion. The company said the shortfall was concentrated in its software and infrastructure businesses.

Chief Executive Arvind Krishna, who has led IBM's pivot toward hybrid cloud and AI since 2020, delivered a blunt assessment in a letter to investors. "These conditions require our teams to execute perfectly, and this quarter we faltered," Krishna wrote. "We did not adapt and move quickly enough, and numerous large deals failed to close on the timelines we expected."

The core problem, executives said, was a sudden shift in how corporate customers are spending. Rather than renewing software subscriptions and mainframe contracts — the high-margin backbone of IBM's business — clients funneled budgets toward AI servers, graphics processors and memory chips. That redirection hollowed out the very product lines that Wall Street relies on for IBM's steady, predictable cash flow, leaving the quarter with a gaping hole.

The sell-off rippled outward. Analysts warned that if a blue-chip vendor like IBM is being squeezed by the AI hardware arms race, other legacy software companies could face the same pressure as the second-quarter earnings season unfolds. Futures wobbled and chip-adjacent names drew fresh scrutiny, with investors questioning whether the trillions in projected AI infrastructure spending are quietly cannibalizing traditional enterprise IT budgets.

For IBM, the reversal is a stark humbling. The company had entered 2026 touting momentum in its watsonx AI platform and its Red Hat software unit, and management had repeatedly assured investors that AI demand would lift, not undercut, its results. Krishna said IBM would provide a fuller accounting — and detail how it intends to recover the lost deals — on its scheduled quarterly earnings call on July 22. Until then, shareholders are left nursing one of the most brutal days in the history of one of America's most storied corporations.