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Preview · early version, more releases are being added · early version
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People said Claude Cowork research preview would kill

RELX

Legal and professional information · LSE: REL

Why people said itAnthropic's Cowork legal plugin automates tasks such as contract review, so investors worried it could compete with paid legal research and data products.

Too early to tellShares fell 14% in tradingFebruary 2026

What was claimed ·

accelerated today by Anthropic's legal automation tool challenging incumbents like RELXReuters (via The Star)

Anthropic's legal plugin for Claude Cowork was said to challenge RELX, parent of LexisNexis.

Who else said it

  1. Anthropic's Claude Legal Plugin: One Month On, the Market Fallout and What It Means for Legal Teams · legal.io · Secondary source
  2. Anthropic’s new AI tool sends shudders through software stocks · CNN (via ABC 17 News) · Secondary source

What happened

RELX, parent of LexisNexis, fell 14% in trading on 3 February 2026 (Reuters: set for its biggest drop since 1988), the day of the market reaction to Anthropic's legal plugin. The claim is under 12 months old, so it is too early to tell what effect, if any, followed.

  1. Reuters reported RELX shares fell 14% in trading on 3 February 2026.

    1. Anthropic's new AI tools deepen selloff in data analytics and software stocks, investors say · Reuters (via The Star) · Secondary source

The verdict describes what happened to the product. It does not claim the AI release caused it. Last checked 11 November 2026. How verdicts are decided.