According to the 13F filing for the quarter ended March 31, 2026, Warren Buffett and Berkshire Hathaway made dramatic changes to their investment portfolio. The company opened a new position in Delta Air Lines Inc. ($DAL) valued at $2.6 billion and a new position in Alphabet Inc. ($GOOGL) valued at $1.0 billion. Concurrently, Berkshire Hathaway sold all its holdings in Visa Inc. ($V), previously valued at $2.9 billion, and Mastercard Incorporated ($MA), previously valued at $2.3 billion.

Warren Buffett, the "Oracle of Omaha," is known for his long-term value investing approach. This move is particularly intriguing as it indicates a shift in strategy towards certain sectors. While exiting credit card companies might reflect concerns about competition or regulation, entering aviation and technology (Alphabet) suggests a belief in their growth potential, despite Buffett traditionally being skeptical of technology. It is important to note that 13F filings are delayed by up to 45 days and reflect the situation at the end of the quarter.

Individual traders can learn that even seasoned investors like Buffett make significant changes to their portfolios, and that a long-term strategy does not preclude adjustments. The shift from certain financial sectors to others highlights the importance of continuous evaluation of market conditions and opportunities. However, it is important to remember that 13F filings reflect past transactions and do not necessarily reflect the investor's current intentions.