IBM Stock Drops 13% After Anthropic AI Threat to COBOL Modernization

IBM defended its position in the market after a sharp 13.2% drop in its stock price following Anthropic’s unveiling of new capabilities in its Claude Code tool. The tool can modernize legacy COBOL systems faster and at scale, posing a threat to IBM’s long-standing business of modernizing financial systems running on COBOL. IBM responded by emphasizing the fundamental engineering challenges of running mission-critical workloads, stating that new AI tools do not change the complexity of these tasks.

IBM highlighted its own investments in code modernization, including generative AI tools like the Watsonx Code Assistant for Z, launched two years ago. The company argued that while translating COBOL is straightforward, the real work involves data architecture redesign, runtime replacement, transaction processing integrity, and hardware-accelerated performance built over decades.

The stock drop marked IBM’s worst single-day performance since October 2000. Anthropic’s new capabilities aim to automate the exploration and analysis phases of COBOL modernization, traditionally a time-consuming process. The selloff in IBM stock is part of a broader trend triggered by AI advancements, with similar selloffs affecting cybersecurity stocks like Palo Alto Networks and CrowdStrike following Anthropic’s recent AI rollouts.

Analysts at Jefferies downplayed the threat from Anthropic, suggesting that IBM’s future hinges more on growth in hybrid cloud, AI, and data. The company continues to provide tools and consulting services to help enterprises modernize their COBOL-based systems, despite the emerging competition from AI-driven solutions.