The Motley Foolยท2025-11-20 09:26Core Insights - Berkshire Hathaway added only one new stock to its portfolio in Q3, which is a major tech company [1] - Warren Buffett will step down as CEO at the end of the year, but will remain as chairman, ensuring continuity in investment strategy [2] - Buffett's investment strategy focuses on companies with steady growth and reliable profits, typically avoiding technology firms [3] Berkshire Hathaway's Portfolio - The "Magnificent Seven" includes major tech companies like Apple, Amazon, Alphabet, Nvidia, Microsoft, Meta Platforms, and Tesla [4] - Berkshire has invested in three of the Magnificent Seven stocks since 2016, which now represent 23.4% of its $309 billion equity portfolio [5] Amazon - Amazon constitutes 0.8% of Berkshire's portfolio and is involved in e-commerce, cloud computing, streaming, and digital advertising [6] - AWS generated $33 billion in revenue in Q3, a 20% year-over-year increase, marking its fastest growth since Q4 2022 [8] - Berkshire first invested in Amazon in 2019 and is expected to benefit from Amazon's growth driven by AI [9] Alphabet - Alphabet makes up 1.6% of Berkshire's portfolio, with a nearly $5 billion stake acquired in Q3 [11] - The company has integrated AI into its search engine, which has led to a 34% revenue growth for Google Cloud in Q3 [14] - Alphabet's P/E ratio is 27.2, making it the second-cheapest stock in the Magnificent Seven, aligning with Buffett's value investing approach [14] Apple - Apple is the largest holding in Berkshire's portfolio, accounting for 21% [15] - Berkshire invested approximately $38 billion in Apple from 2016 to 2023, with the value of its stake peaking at over $170 billion [15] - Apple's devices are designed for the AI era, and the company has 2.35 billion active devices globally, positioning it as a potential leader in AI software distribution [16][18]