u/Axirohq ·
Reddit — r/stocks
· February 24, 2026 at 15:46
· ⬆ 270 pts
· 💬 91 comments
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Summary
The post discusses IBM's significant stock price drop, which the author links to news about Anthropic's AI (Claude Code) being able to modernize legacy COBOL systems.
The author questions whether this is a market overreaction to an AI headline or the beginning of a genuine disruption to IBM's lucrative mainframe business, which relies heavily on the "stickiness" of COBOL-based systems.
Quality assessment: This is speculation and discussion, not deep-dive due diligence (DD). The author is posing a question and exploring a thesis rather than presenting a firm, well-researched conclusion.
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IBM just wiped out about $31B in market cap in a single session. Down 13% in a day. Now roughly 27% down this month.
News that Anthropic’s Claude Code can now help modernize COBOL systems. And that’s interesting, because COBOL is basically the backbone of a lot of IBM’s legacy mainframe business.
So I’m trying to figure out… is the market overreacting to an AI headline, or is this actually the beginning of something bigger?
On one hand, big enterprises don’t just rip out infrastructure overnight. Banks and governments move slowly. On the other hand, if AI suddenly makes migration cheaper and faster, that chips away at the “no one wants to touch this” moat IBM has benefited from for decades.
Are we watching real disruption happen in real time? Or is this just fear getting priced in too aggressively?
Curious what you all think. Is IBM a falling knife here, or is this the kind of panic move that looks obvious in hindsight? And if this trend continues, which other legacy-heavy companies should be nervous?