Warren Buffett, Stanley Drukenmiller, and Philippe Lefevre have collectively invested $5.6 billion in Alphabet, signaling strong confidence in the company's AI-driven future. Berkshire Hathaway's latest 13F filing reveals Buffett's acquisition of 17.85 million shares valued at $4.3 billion during Q3 2025. Meanwhile, Coatue Management, led by Lefevre, increased its stake by 259%, adding 5.21 million shares worth $1.27 billion. The Druken Family Office also joined the investment wave, purchasing 102,200 shares for $24.8 million. Alphabet's Q3 2025 financial results underscore the appeal of these investments, with revenue reaching $102.3 billion, marking a 16% year-over-year increase. This growth is largely attributed to advancements in AI technologies, including the Gemini 3 AI tools and the expansion of Google Cloud services. The strategic investments by these prominent investors highlight the anticipated potential of AI to drive future technological and financial growth.