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 ...

After IBM's worst day on stock market, IBM senior vice-president Rob Thomas to everyone ...

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

Anthropic Vs. IBM: AI Starts To Threaten Businesses (Rating Downgrade)

International Business Machines Corporation stock plunges; downgrade IBM to Hold as Anthropic's Claude Code threatens ...
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IBM business model at risk? Anthropic's Claude can modernise COBOL code; stocks fall 13%

IBM shares plunged 13% after Anthropic said its Claude Code can automate COBOL modernisation—threatening a core IBM mainframe and legacy IT services revenue stream tied to the ageing programming ...

Anthropic's new AI tool jolts IBM - What happened and why it matters

The announcement reignited fears that generative AI could disrupt traditional enterprise software and consulting revenue streams ...

When AI learns legacy: How code that rewrites itself is changing IT economics

On 23 Feb 2026, IBM shares dropped 13%, losing nearly $30B, after Anthropic's Claude AI promised faster COBOL modernization, ...