---
title: "IBM's stock price recorded its worst single-day drop in 25 years! Anthropic claims it can transform Cobol systems"
description: "IBM's stock price recorded its worst single-day performance in over 25 years on Monday, plummeting by 13%. This decline was due to the artificial intelligence startup Anthropic stating that its Claude"
type: "news"
locale: "en"
url: "https://longbridge.com/en/news/276653208.md"
published_at: "2026-02-23T22:21:20.000Z"
---

# IBM's stock price recorded its worst single-day drop in 25 years! Anthropic claims it can transform Cobol systems

> IBM's stock price recorded its worst single-day performance in over 25 years on Monday, plummeting by 13%. This decline was due to the artificial intelligence startup Anthropic stating that its Claude Code tool can help modernize Cobol systems. IBM's stock price has already fallen by 27% in February, potentially marking its largest single-month decline since 1968. Market risk warning, investment should be cautious

IBM's stock price recorded its worst single-day performance in over 25 years on Monday, after artificial intelligence startup Anthropic stated that its Claude Code tool can assist in modernizing Cobol. Cobol is an outdated programming language that runs on IBM computers.

IBM's stock price plummeted 13% that day, marking its largest single-day drop since October 2000. With this decline, IBM's stock price has fallen 27% in February, potentially setting the largest monthly drop since at least 1968.

Anthropic wrote in a blog post:

> "In the past, modernizing Cobol systems often required a large number of consultants and took years to streamline workflows. Tools like Claude Code can automate the exploration and analysis phase, which constitutes the majority of the workload in the Cobol modernization process."

More news will be updated continuously.

Risk Warning and Disclaimer

The market has risks, and investment should be cautious. This article does not constitute personal investment advice and does not take into account the specific investment goals, financial situation, or needs of individual users. Users should consider whether any opinions, views, or conclusions in this article align with their specific circumstances. Investment based on this is at one's own risk

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## Related News & Research

| Title | Description | URL |
|-------|-------------|-----|
| IBM 股票在下跌 13% 後成為熱門話題，原因是 Claude 的製造商 Anthropic：以下是事情經過 | IBM 的股價下跌了 13%，原因是 Anthropic 的 Claude Code AI 工具引發了對 IBM 傳統主機和諮詢業務潛在干擾的擔憂。儘管財報表現強勁，投資者仍擔心人工智能可能加速 COBOL 現代化，影響 IBM 來自主機系 | [Link](https://longbridge.com/en/news/276674951.md) |
| IBM 的股票正經歷 34 年來最糟糕的一個月，而 Anthropic 是部分原因 | IBM 的股票在週一下跌了 13.2%，創下自 1992 年 12 月以來的最差月份，這主要是由於對 Anthropic 的 Claude Code 的擔憂，該技術威脅到 IBM 的 COBOL 現代化業務。自 2 月份以來，股票已下跌 2 | [Link](https://longbridge.com/en/news/276654052.md) |
| Anthropic 發布新 AI 模型 Claude Sonnet 4.6 幻覺和奉承傾向較低 | Anthropic 發布新 AI 模型 Claude Sonnet 4.6，旨在提升 AI 工具的任務處理效率。該模型能執行多步驟操作，如填寫網頁表單，並在多個瀏覽器標籤間協調信息。Sonnet 4.6 在編程方面更可靠，幻覺和奉承傾向較低 | [Link](https://longbridge.com/en/news/276406320.md) |
| Anthropic 控 3 家中企竊取 Claude 模型數據 恐涉國安 | 美國人工智慧公司 Anthropic 指控三家中國 AI 公司（深度求索、月之暗面、MiniMax）非法竊取其聊天機器人 Claude 的技術，稱此為工業規模的智慧財產權竊取。Anthropic 表示，這些公司通過 1600 萬次與 Cla | [Link](https://longbridge.com/en/news/276666727.md) |
| AI 巨頭競爭愈演愈烈 OpenAI 及 Anthropic 掌舵人印度峯會拒牽手 | 在印度新德裡舉行的人工智慧高峰會上，OpenAI 執行長 Sam Altman 與 Anthropic 執行長 Dario Amodei 拒絕牽手，展現出兩家公司之間的競爭。Altman 表示沒有牽手並非故意，而是拍攝過程中的混亂。兩家公司 | [Link](https://longbridge.com/en/news/276408352.md) |

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> **Disclaimer**: This article is for reference only and does not constitute any investment advice.