Three investing icons just poured billions of dollars into a bet on the future of AI.
Berkshire Hathaway’s latest 13F filing shows CEO Warren Buffett initiated a new $4.3 billion position in Alphabet (GOOG) in Q3 of 2025, buying 17.85 million shares of Google’s parent company.
The move marks Buffett’s first-ever investment in the tech giant, signaling major confidence in Alphabet’s ability to expand its digital dominance with AI.
Meanwhile, billionaire Philippe Laffont’s Coatue Management boosted its Alphabet holdings by 259%, adding 5.21 million shares to reach 7.22 million total, with the increase valued at approximately $1.27 billion based on quarter-end prices.
Coatue, known for tech-focused bets, now has Alphabet as its fourth-largest position.
At the same time, Billionaire Stanley Druckenmiller’s Duquesne Family Office also opened a fresh stake in the firm, acquiring 102,200 Alphabet shares valued at $24.8 million.
The move aligns with Druckenmiller’s shift toward AI-driven tech stocks amid robust market growth.
Together, the billionaires’ investments total a whopping $5.6 billion.
Alphabet reported $102.3 billion in Q3 revenue, up 16%, fueled by AI innovations.
This surge was propelled by the global rollout of AI overviews in search, the launch of Gemini 3 with enhanced reasoning and multimodal features and robust growth in Google Cloud’s AI infrastructure.
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