IBM or International Business Machines Corp had its worst day on stock market in more than 25 years on Monday, February 23.

International Business Machines Corporation stock plunges; downgrade IBM to Hold as Anthropic's Claude Code threatens ...

International Business Machines Corp. shares had their worst day in more than 25 years on Monday, after AI startup Anthropic ...

IBM shares suffered their worst single-day drop in over 25 years on Monday, February 23 after AI startup Anthropic announced ...

With the decline, IBM shares have fallen 27% in February, on track for its biggest one-month slide since at least 1968, ...