The Berkshire Hathaway fund, led by Warren Buffett, reported a publicly traded portfolio of $299.3 billion as of September 30, 2026, spread across 26 positions. Berkshire Hathaway: Warren Buffett's Investment Philosophy Warren Buffett is renowned for his value investing philosophy. He focuses on purchasing companies where the market price is below the estimated intrinsic value, emphasizing strong management, robust cash flow, and the ability to generate sustainable returns. His track record spans decades, with long-term performance significantly outpacing the S&P 500. Buffett's style combines a value approach with prudent sector selection: he favors businesses with clear visibility, stable cash flow, and durable competitive advantages (moats). Preferred sectors include financial services, consumer goods, high-margin technology, energy, and insurance, reflecting the diversity of the current portfolio. Key New Positions and Strengths The Q3 2026 13F filing reveals that the top ten Berkshire Hathaway positions total $299.3 billion, representing over 90% of the reported portfolio. Apple Inc. leads with a value of $65.95 billion, accounting for 22.0% of the portfolio and corresponding to 227,917,808 shares. American Express Co. follows with $51.28 billion (17.1% of the portfolio) and 151,610,700 shares. Alphabet Inc. is third at $37.76 billion (12.6% of the portfolio) and 105,979,600 shares. Coca-Cola Co. represents $32.51 billion (10.9% of the portfolio) with 400,000,000 shares, while Bank of America Corp. totals $27.54 billion (9.2% of the portfolio) and 483,394,015 shares. The remaining top positions include Chevron Corporation ($13.99 billion, 4.7% of the portfolio, 84,375,856 shares), Occidental Petroleum Corp. ($12.87 billion, 4.3% of the portfolio, 264,941,431 shares), Chubb Limited ($11.67 billion, 3.9% of the portfolio, 34,249,183 shares), Moody’s Corp. ($11.17 billion, 3.7% of the portfolio, 24,669,778 shares), and Kraft Heinz Co. ($7.69 billion, 2.6% of the portfolio, 325,634,818 shares). The remaining 16 positions total $26.8 billion, approximately 9% of the portfolio, but their details are not provided in the filing. No figures on changes are indicated, meaning the positions listed reflect the values as of the end of the quarter without explicit information on new purchases or strength enhancements compared to previous periods. Reductions and Exits: What Buffett/Management is Leaving Behind The 13F filing contains no information on position reductions or complete exits. The 13F form only requires reporting long-held positions as of the quarter's end and does not detail intra-quarter movements. Therefore, based on available data, it is impossible to identify which securities were sold or reduced during the quarter. The text is limited to describing held positions without mentioning divestments. Limitations of the 13F: What This Filing DOES NOT Say The 13F filing, submitted to the SEC within 45 days after the end of the quarter, has several important limitations for investors. First, the 45-day deadline creates a temporal gap: the positions reflect the situation on the last day of the quarter, but movements between that date and the filing are not captured. Second, the 13F only lists long positions (held shares) and excludes short positions (shorts), options, futures contracts, and foreign holdings that are not required to be reported. Third, the filing does not provide details on purchase prices, acquisition dates, or the proportion of the fund's total capital allocated to each position, limiting analysis of timing strategy. Finally, positions in mutual funds or private investment vehicles are not always included, so the reported portfolio may underrepresent the fund's actual exposure. Readers are encouraged to consult the full filing on the SEC website (provided URL) to examine detailed tables and appendices. In summary, the Q3 2026 13F filing shows that Berkshire Hathaway continues to concentrate its capital in a limited number of large-cap securities, led by Apple, American Express, and Alphabet, while maintaining significant exposure to consumer, financial, and energy sectors. The inherent limitations of the 13F form underscore the need to supplement this reading with other information sources to gain a comprehensive view of the fund's allocation strategy.