Investors reacted to Anthropic’s assertion that Claude Code could streamline legacy COBOL modernization, raising concerns about pressure on IBM’s high‑margin mainframe services despite longstanding ...

IBM stock plunged on Claude Code COBOL fears, but Jefferies says IBM’s watsonx is already modernizing mainframes with GenAI—read more now.

A blog post by Anthropic pointing out that Claude Code can refactor legacy COBOL applications appears to have sent IBM’s share price down by double ...

IBM just got hit with one of its worst single-day drops in years. Shares fell over 13.2% on Feb. 23, 2026, closing at $223.35 ...

IBM's stock ended Monday as the worst-performing member of the S&P 500 following a disruptive AI announcement from Anthropic. International Business Machines' stock is the latest big software loser ...

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

Following the recent selloff, IBM’s valuation has become more compressed, according to analysts. The stock now trades at ...

IBM shares rebound 5% after AI fears fade, as analysts defend its mainframe strength and downplay risks from Anthropic’s ...

While Anthropic’s Claude Code grabbed headlines, IBM has been deploying its own generative AI solution, Watsonx Code Assistant for Z, designed to modernize the very mainframes it built. Unlike general ...

Investing.com -- IBM (NYSE:IBM) shares rose 4% Tuesday, recovering from Monday’s sharp decline after analysts defended the company’s mainframe business against concerns raised by Anthropic’s COBOL ...