IBM's stock price plunged 25% on Tuesday, marking the company's worst single-day decline since the 1987 "Black Monday" market crash. The sell-off erased approximately $69 billion in market value from the technology giant.
The sharp decline in IBM shares was severe enough to affect the broader software sector, with weakness spreading to other software stocks during the same trading session. The extent of the one-day drop exceeded the percentage losses IBM experienced during the historic 1987 market crash.
The specific operational or financial reasons triggering the stock collapse were not detailed in available reporting on the event.
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