Meet the "Magnificent Seven" Stock Berkshire Hathaway and Investing Legend Warren Buffett Should Have Bought. (Hint: It's Not Apple, Amazon, or Alphabet.)

Core Insights - Warren Buffett's investment strategy focuses on acquiring businesses with economic moats, which provide durable competitive advantages [1] - The tech sector has become a significant area of investment for Buffett, with notable acquisitions including Apple, Amazon, and Alphabet [2][4] - Meta Platforms, despite its strong performance, was not included in Buffett's portfolio, which raises questions about his investment criteria [5][6] Group 1: Investment Philosophy - Buffett's approach emphasizes understanding a company's products, financials, industry landscape, and management before investing [6] - The concept of economic moats is central to Buffett's investment decisions, allowing companies to maintain competitive advantages over time [1] Group 2: Tech Sector Investments - Apple shares have increased by 966% over the past decade, while Amazon shares rose by 169% since Q1 2019, and Alphabet's stock grew by 39% since Q3 2025 [4] - These investments have proven successful, although the long-term impact of the Alphabet acquisition remains to be seen [4] Group 3: Meta Platforms Analysis - Meta Platforms has a significant economic moat, characterized by strong network effects from its social media applications [7] - The company reported 3.58 billion daily active users in Q4 2025, highlighting its vast user base and engagement potential [8] - Meta's ability to collect extensive data enhances its algorithmic capabilities, improving user engagement and advertising effectiveness [8]