Anthropic's new AI tool can write 67-year-old COBOL code, sending 115-year-old IBM's stock tumbling by 13% — IBM stock has worst day in 26 years, down 25% Mo…

Besides being an absolute pain to deal with, they all rely on COBOL and IBM mainframe computers as core infrastructure. The ...

What is COBOL, the high-level programming language that is behind biggest-ever fall in IBM stock value

AI startup Anthropic's claim of automating COBOL modernization sent IBM's stock plummeting, wiping billions off its market value. The decades-old language, still powering critical systems, faces a ...

IBM Sinks Most Since 2000 as Anthropic Touts Cobol Tool

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

IBM shares plunge as Anthropic touts COBOL modernization efforts

Shares sank as much as 13 per cent, their biggest intraday drop since March 2020. With the decline, the stock is now down 26 ...
The Financial Express

Explainer: How Claude Code threatens to disrupt IBM’s mainframe biz

On3, 2026, Anthropic unveiled Claude Code, an AI tool capable of modernizing decades-old COBOL systems in months rather than years.

IBM stock falls after Anthropic says AI can now modernize old software

IBM still profits from mainframes running decades-old COBOL systems. Anthropic says AI can migrate that software elsewhere. IBM stock was down 10% on Monday afternoon after Anthropic published a blog ...

Explained | What is COBOL? How an Anthropic Claude blog wiped $30 billion off IBM in a single session

A blog post from Anthropic caused IBM's market value to drop over $30 billion due to concerns about COBOL. Here's everything ...

IBM falls most in 25 years on AI threat fears: Analysts say it’s a buy

Analysts argue the reaction overlooks IBM’s own AI strategy. Shares of International Business Machines suffered their ...