Three prominent investors recently made significant moves in the world of artificial intelligence, pouring billions of dollars into their bets on the future of AI.
In a surprising move, Warren Buffett’s Berkshire Hathaway disclosed a new $4.3 billion position in Alphabet (GOOG) during the third quarter of 2025, acquiring 17.85 million shares of Google’s parent company.
This investment marks Buffett’s first foray into the tech giant, showcasing his confidence in Alphabet’s potential to further solidify its digital dominance through AI.
On the other hand, Philippe Laffont’s Coatue Management increased its holdings in Alphabet by 259%, adding 5.21 million shares to bring its total to 7.22 million, valued at around $1.27 billion by the end of the quarter. With this move, Alphabet now stands as Coatue’s fourth-largest position.
Simultaneously, Stanley Druckenmiller’s Duquesne Family Office also entered the fray by acquiring 102,200 Alphabet shares worth $24.8 million, aligning with Druckenmiller’s focus on AI-driven tech stocks amidst the current market boom.
Collectively, these billionaire investments amount to a staggering $5.6 billion, reflecting a strong belief in the potential of AI.
Alphabet itself reported a revenue of $102.3 billion in Q3, a 16% increase driven by advancements in AI technology. This growth was fueled by the global integration of AI features in search, the introduction of Gemini 3 with advanced reasoning and multimodal capabilities, and the continued expansion of Google Cloud’s AI infrastructure.
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