May 30, 2026, 10:30 AM EDT. 2026 stock markets see turbulence and valuations echo Warren Buffett's advice to be cautious amid greed. Buffett's recent step back from Berkshire Hathaway spotlights his lasting wisdom. While high demand fuels AI and tech stocks like Nvidia, some sectors, including parts of the UK market, still trade at discounts, hinting at value opportunities. Berkshire's $380 billion cash reserve and continued share sales signal limited attractive investments, urging investors to reconsider portfolio risks. Experts advise assessing overvalued stocks and proceeding with financial caution, reflecting Buffett's guidance: be "fearful when others are greedy." This market dynamic underscores potential for strategic profit-taking and selective buying in volatile conditions.