Shares of IBM cratered in what became a historic rout after the company took the unusual step of pre-announcing weak second-quarter results eight days before its scheduled earnings call. IBM stock suffered its worst single-day decline ever, plunging 25.2% and shedding $67 billion in market value.
The drop surpassed its previous worst day of Oct. 19, 1987, when shares fell 23.7% — a record that had stood for nearly four decades. The question now is whether $660 million in missing revenue was merely delayed or permanently lost.
A $660 Million Shortfall That Signals an Execution Problem, Not Just Bad Luck
IBM reported revenue up 1% to $17.2 billion, roughly $660 million below the $17.86 billion FactSet consensus, and operating EPS of $2.93, eight cents light of the $3.01 estimate. CEO Arvind Krishna was blunt: "These conditions require our teams to execute perfectly, and this quarter we faltered."
According to Krishna, IBM "did not adapt and move quickly enough," resulting in numerous large deals slipping beyond the quarter. That admission matters because it shifts blame from the market to IBM's own sales machine.
Clients Bought AI Hardware Instead of IBM Software
Krishna said clients shifted money toward hardware purchases — specifically servers, storage, and memory — to secure supply-constrained infrastructure ahead of expected price increases.
This situation had been building for months as AI data-center demand motivated memory makers to divert capacity to more profitable chips, driving DRAM prices up 100–116% in Q1 2026. IBM's mainframe-related infrastructure revenue fell 7%, and the software tied to those mainframes underperformed. When your clients are scrambling to stockpile AI chips, your enterprise software renewal gets pushed to next quarter — or next year.
The Reaction Was Outsized Because the Stock Was Priced for Perfection
The earnings shortfall was small relative to the share-price reaction, indicating the selloff reflected weaker confidence in IBM's forward growth and execution rather than the quarterly miss alone.
IBM had been trading near a recent $332.46 high at roughly 23 times forward earnings — a rich valuation that only works if software growth stays in the double digits. It didn't; software grew just 5%, half the prior quarter's 11% pace.
July 22 Is Now a Make-or-Break Date
IBM did not update or reaffirm its full-year revenue and free-cash-flow outlook , leaving investors to guess whether guidance gets cut. Prediction market Polymarket priced only a 25.5% probability that IBM beats consensus on July 22. If slipped deals close in Q3, the stock recovers some ground. If they don't, this wasn't a stumble — it was a turning point.