Wall Street Thinks These 3 Buffett Stock Picks Have Up to 21% Upside Mark Wilson / Getty Images Is anyone surprised that when Warren Buffett and Berkshire Hathaway Inc. (NYSE: BRK-A) part with shares of Apple Inc. (NASDAQ: AAPL), the largest stake in the Berkshire portfolio, it makes headlines? The so-called Oracle of Omaha is probably the best-known investor in the world, certainly one of the most successful. Millions of investors and aspiring investors still hang on his every word. So, is it time to dum ...