Yahoo Finance·2025-11-25 08:44Group 1 - Billionaires Warren Buffett, Stanley Druckenmiller, and Israel Englander all invested in Alphabet (NASDAQ: GOOG) during Q3 2025, highlighting a shared confidence in the company's potential despite their differing investment styles [1][3][8] - Buffett made a significant move by purchasing a $4.3 billion stake in Alphabet, marking a notable shift as he had previously expressed regret for not investing earlier [4][8] - Druckenmiller acquired 167,900 shares of Alphabet, while Englander's Millennium Management increased its holdings in Alphabet Class A shares by 65.5% and Class C shares by 33.5% during the same quarter [5][8] Group 2 - Alphabet's Google Quantum AI has achieved significant milestones in quantum computing, including a calculation that would have taken supercomputers 10,000 years to complete, accomplished in just 200 seconds [6] - The company also demonstrated practical quantum error correction with a logical qubit prototype in 2023, showcasing its leadership in the quantum computing space [6] - Despite the advancements in quantum computing, it is suggested that the billionaires were more attracted to Alphabet's advertising revenue and artificial intelligence opportunities rather than solely its quantum computing potential [7][8]