Core Insights - Berkshire Hathaway has significantly reduced its holdings in Apple, selling 20 million shares in Q2 2023, which reflects a broader divestment trend beyond just stock performance [1][2][5]. Group 1: Berkshire Hathaway's Actions - Berkshire Hathaway's Apple stock holdings have decreased from over 900 million shares to 280 million shares, indicating a dramatic reduction in its investment [4]. - Apple remains the largest public stock holding for Berkshire, accounting for approximately 21.4% of its stock portfolio [5]. Group 2: Apple's Performance - Apple stock has underperformed in 2023, down about 10%, while the S&P 500 and Nasdaq Composite have gained 8.4% and 9.4%, respectively [2]. - Despite a strong Q3 performance with a 10% increase in total sales and a 13% rise in iPhone revenue year-over-year, Apple's trailing-12-month revenue has only grown by 4% over the last three years [6][9]. Group 3: Market Dynamics - Apple's sales growth has been sluggish in recent years, and while the recent quarterly results exceeded expectations, there are concerns about the sustainability of this growth [8]. - Weak performance in China, driven by government subsidies and a shift in consumer preference towards domestic brands, has contributed to Apple's stock struggles [12]. - Geopolitical tensions and new import taxes pose additional challenges for Apple, particularly as it relies heavily on Chinese manufacturing [13]. Group 4: Competitive Landscape - Apple appears to be lagging in the artificial intelligence sector, with internal development issues and delayed product launches, which may be influencing Berkshire's decision to divest [10][11].