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IBM is the latest AI casualty. Shares are tanking 11% on Anthropic programming language threat

Anthropic's AI tool automates COBOL modernization, threatening IBM's legacy business which handles 95% of U.S. ATM transactions, causing an 11% stock drop.

  • On Monday, IBM shares plunged 11% in afternoon trading after Anthropic outlined a new COBOL use case for Claude Code, contributing to a nearly 22% year-to-date decline.
  • Anthropic's Monday blog post said `COBOL handles an estimated 95% of ATM transactions in the U.S.` and explained Claude Code automates exploration and analysis for COBOL modernization, arguing `AI flips that equation`.
  • COBOL traces to the 1950s and still powers payment-processing and retail transaction systems, making business data processing a core area for IBM linked to legacy modernization.
  • Traders on the NYSE sold IBM shares after Anthropic outlined that `COBOL continues to power systems responsible for large volumes of transactions,` raising concerns about automation disrupting legacy-code vendors serving banks, airlines, and government systems.
  • If AI scales automation, Anthropic's claim that AI lowers legacy-code modernization costs suggests major shifts for banks and airlines using COBOL in ATMs and payment infrastructure.
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IBM's stock price suffered its worst day in 25 years. On the 23rd (local time), Anthropic announced that its "Claude Code" tool can help modernize the aging programming language Cobol.

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Zero Hedge broke the news in United States on Monday, February 23, 2026.
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