Core Insights - Warren Buffett has stepped down as CEO of Berkshire Hathaway after over 65 years, transforming the company from a failing textile business into a diversified conglomerate with a wide range of subsidiaries and investments in publicly traded companies [1] Investment Strategy - Despite Buffett's famous quote about a "forever" holding period, he has been actively buying and selling stocks based on market valuations, being a net seller of stocks in every quarter leading up to his retirement at the end of 2025 [2] - In the most recent quarter, Berkshire Hathaway sold $12.5 billion worth of stocks, with specific details revealed in the SEC's form 13F filing [3] Stock Sales - Buffett has been reducing Berkshire's stakes in Apple and Bank of America due to their high valuations, with Apple trading at a P/E ratio comparable to faster-growing tech companies despite slow revenue growth [4] - Bank of America's share price has significantly increased since Buffett's initial investment, nearing twice its tangible book value by the end of 2025 [5] Unique Transactions - The sale of Verisign, which has exclusive rights to register .com and .net domain names, is notable as it reduced Berkshire's stake below 10%, triggering SEC disclosure requirements. Additionally, Berkshire has committed not to sell any remaining stake for at least one year [8]