How does this compare to IBM's Black Monday crash?
IBM's 25.2% single-day drop topped the company's previous worst day, October 19, 1987's Black Monday, when the stock fell 23.7% alongside a market-wide crash. This time the selloff was narrower: the Nasdaq 100 broadly rose the same day, meaning investors were repricing IBM and software specifically, not panicking across the market.
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IBM Just Had Its Worst Trading Day in 115 YearsIBM stock crashed 25.2% on July 14, 2026, erasing $67 billion after a modest earnings miss — worse than Black Monday 1987.
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