Several of the world’s most influential investors significantly increased their exposure to artificial intelligence in the third quarter, collectively allocating billions of dollars toward Alphabet as confidence in the company’s AI strategy continues to build.
What Happened
Regulatory filings show that Berkshire Hathaway, led by Warren Buffett, established a new multibillion-dollar position in Alphabet during the quarter, marking the conglomerate’s first recorded investment in Google’s parent company.
The stake, valued at roughly $4.3 billion at the time of purchase, signals a notable shift for Buffett, who has historically approached large technology investments with caution.
The move was echoed by other prominent investors.
Philippe Laffont’s technology-focused hedge fund, Coatue Management, dramatically increased its Alphabet exposure, expanding its position by more than threefold.
The fund added over five million shares during the quarter, bringing its total holdings to more than seven million shares and elevating Alphabet to one of its largest portfolio positions.
Stanley Druckenmiller’s Duquesne Family Office also entered the stock for the first time, acquiring just over 100,000 shares.
While smaller in size compared to the other allocations, the investment reflects Druckenmiller’s broader pivot toward companies positioned to benefit from advances in artificial intelligence.
Taken together, the new and expanded positions represent more than $5.5 billion in fresh capital directed toward Alphabet in a single quarter, highlighting growing conviction among veteran investors that AI will be a durable driver of long-term value.
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Why It Matters
Alphabet’s recent financial performance provides context for that confidence.
Alphabet's revenue for the third quarter of 2025 (Q3 2025) was a record $102.35 billion, a 16% increase year-over-year
Management attributed much of that momentum to accelerating adoption of AI-powered features across its products.
Recent initiatives include the global deployment of AI-generated search summaries, the release of an upgraded Gemini model with improved reasoning and multimodal capabilities, and continued expansion of AI infrastructure within Google Cloud.
These developments have helped position Alphabet as a central beneficiary of rising enterprise and consumer demand for artificial intelligence tools.
The convergence of record revenues and large-scale institutional buying suggests that some of the market’s most experienced investors see Alphabet not just as a legacy technology firm, but as a long-term leader in the next phase of AI-driven growth.
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