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Katie Miller Held $1 Million xAI Stake While Criticizing Rival Chatbots

The revelation has prompted legal and public scrutiny because experts say her purchase may have required disclosure under Federal Trade Commission guidance.

Overview

  • A financial filing reported by The Washington Post on Thursday showed Miller bought roughly $1 million in xAI stock in December 2025 after she began consulting for the company.
  • A Washington Post analysis found Miller published nearly 500 posts attacking ChatGPT, Anthropic’s Claude and Google’s Gemini and posted favorably about xAI’s Grok more than 160 times over about nine months.
  • Her xAI shares were bought in a private funding round that could not be purchased through an ordinary brokerage account, and reporting says xAI later merged with SpaceX as SpaceX moved to a public valuation.
  • Legal experts point to FTC rules that generally require people to disclose material financial ties when promoting or attacking products, and Miller has denied wrongdoing while calling the reporting 'fake news.'
  • Miller’s prior roles advising Musk-linked efforts and her husband Stephen Miller’s financial disclosure and stated recusal have focused attention on overlapping political, corporate and regulatory ties and could spur further scrutiny or enforcement action.