Anthropic’s COBOL tool triggers worst single-day drop in 25 years in IBM's stock price: What it is and why it wiped billions of dollar for IBM

IBM shares plummeted after AI startup Anthropic announced its tool can automate COBOL modernization, threatening IBM's core ...

IBM’s stock heads for worst month in 34 years — and Anthropic is partly to blame

IBM’s stock ended Monday down 13% as Anthropic’s Claude Code threatens to dismantle a critical part of its business.