Berkshire Hathaway Reports $299.3 Billion Portfolio as of September 30, 2026

Berkshire Hathaway, led by Warren Buffett, reported a total portfolio of $299.3 billion as of September 30, 2026, according to the 13F-HR filing submitted to the SEC.

Berkshire Hathaway: Warren Buffett's Investment Philosophy

Warren Buffett is globally recognized for an investment approach focused on the fundamental value of businesses, their cash flow strength, and the ability to generate superior long-term returns. His style combines a preference for companies with durable competitive advantages (or "moats") and a willingness to hold securities for decades, or even indefinitely. The fund's track record, spanning over six decades, has accumulated annualized returns significantly exceeding market averages. Historically favored sectors by Buffett include financial services, consumer staples, information technology when they offer monopoly positions, as well as energy and insurance, which are reflected in the current portfolio composition.

Major New Positions and Strengthenings

According to available information, the filing for the third quarter of 2026 does not indicate any new positions or significant strengthening compared to previous filings. The table of top ten positions shows that the shares already present in the portfolio maintain their respective weights, with Apple Inc. at 22.0% of the portfolio ($65.95 billion), followed by American Express (17.1%) and Alphabet (12.6%). No percentage change is reported in the submitted document.

Cuts and Exits – What Buffett/Management is Leaving Behind

The 13F report for the quarter mentions no position reductions or complete exits among the listed securities. Thus, the holdings in Coca-Cola, Bank of America, Chevron, Occidental Petroleum, Chubb, Moody's, and Kraft Heinz remain unchanged at their declared levels, representing respectively 10.9%, 9.2%, 4.7%, 4.3%, 3.9%, 3.7%, and 2.6% of the portfolio. Without additional data, it is not possible to specify if the manager adjusted the quantities held during the quarter.

The Limits of 13F: What This Filing DOES NOT Say

The Form 13F provides only a partial view of the portfolio. First, the information is published up to 45 days after the end of the quarter, meaning that movements occurring between September 30 and the filing date (August 14, 2026) are not reflected. Second, the filing only lists long positions in U.S. equities, excluding short positions, derivatives (options, futures), non-U.S. listed securities, as well as indirect holdings through funds or holding companies. Finally, the amount declared corresponds to the market value at the end of the quarter, without considering intraday fluctuations or transaction costs.Individual investors should therefore consult the complete document on the SEC website to verify exact details: SEC 13F – Berkshire Hathaway (Warren Buffett).

In summary, the declared portfolio of Berkshire Hathaway remains heavily concentrated in a dozen or so securities, which together account for 92.6% of the total value. The sector allocation shows dominance in information technology (Apple, Alphabet), financial services (American Express, Bank of America), and consumer goods (Coca-Cola, Kraft Heinz). This allocation reflects Buffett's conviction that these enterprises possess durable competitive advantages and generate robust cash flows. The absence of new positions, significant strengthenings, or notable divestments during the quarter indicates a "hold" stance characteristic of Berkshire's long-term strategy. Readers are invited to review the complete filing to confirm the absence of undisclosed movements and to keep in mind the inherent limitations of 13F reporting when evaluating the relevance of these positions for their own portfolios.