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Alphabet Hits $4 Trillion After Apple Taps Gemini for Next-Gen Siri

A new Apple partnership underscores market faith in Google's AI stack.

Overview

  • Alphabet became the fourth company to reach a $4 trillion valuation, with shares up about 1% to 2% on Monday.
  • Apple and Google announced a multi-year collaboration that makes Gemini the basis for Apple Foundation Models and a more personalized Siri arriving this year.
  • Alphabet recently surpassed Apple in market value for the first time since 2019, taking the No. 2 spot globally.
  • Investor reappraisal has been fueled by strong reviews for Gemini 3, the launch of Ironwood TPUs, and monetization through TPU rentals as Google Cloud grew 34% in Q3 with a $155 billion backlog.
  • Sentiment was reinforced by a federal ruling against breaking up Google and Berkshire Hathaway’s newly disclosed stake, even as some warn of AI-driven valuation risks.