Key Takeaways
- IBM lost about $31 billion in market value after news from Anthropic about its AI tool Claude Code. Investors fear AI can modernise COBOL faster and reduce IBM’s consulting income.
- IBM stock fell over 13%, its biggest drop in 25 years. Other tech shares also declined as markets worried about AI replacing legacy software jobs.
- IBM said its mainframe systems offer strong speed, safety, and cloud support, not just COBOL work.
- Experts say COBOL still runs banks, ATMs, and government systems, so human experts are still needed. AI can help, but cannot fully replace workers yet.
“LEGACY SYSTEMS FACE MODERN STORMS.”
Is Claude Code really strong enough to change old COBOL systems? IBM’s stock dropped significantly on Monday. In a single day, the business lost around $31 billion. Its largest decline in almost 25 years was this one. The news from Anthropic alarmed investors.
According to Anthropic, its artificial intelligence tool, Claude Code, can repair outdated COBOL computer programs. One of the oldest coding languages is COBOL. It is still widely used on IBM computers in government agencies, banks, and aeroplanes.

How Claude Code May Change Old Systems?
COBOL systems were previously fixed by large teams of specialists. They spent a lot of money and worked for many years. This effort brought in money for IBM and other IT firms. According to Anthropic, AI can now read older code and update it more quickly.
Investors were alarmed by this news. They feared that IBM’s earnings would decline in the future. Shares of IBM were quickly sold by so many people. In a single day, the stock dropped more than 13%.
Old Software Work May Get Less Business
The shares of a few other tech companies also fell. Investors were concerned that many IT jobs would be replaced by AI tools. Businesses that repair outdated software can lose business if AI completes the task more quickly.
IBM quickly spoke. According to the corporation, mainframe computers are used for purposes other than COBOL. According to IBM, its systems are robust, secure, and quick. Additionally, IBM claimed to have AI capabilities of its own to assist in updating outdated software.
Conclusion
Will the market feel calm again after this news? According to experts, COBOL continues to operate a number of important services, including bank records and ATMs. Many employees who are familiar with COBOL are growing elderly.
Businesses require assistance to maintain systems. AI techniques are useful but not flawless, according to some experts. Governments and large banks still require workers to verify work and protect data.
The market might remain uneasy for a while. However, a lot of individuals think IBM may still expand with new cloud services and AI initiatives.
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