Shares of Berkshire Hathaway Inc. Cl B dropped 0.23% to $464.80 Friday, on what proved to be an all-around positive trading session for the stock market, with the S&P 500 Index rising 0.40% to 5,864.67 and the Dow Jones Industrial Average rising 0.

Berkshire Hathaway is arguably always Buffett's favorite stock. But another stock commands a strong second place.

Berkshire Hathaway sold a whopping $75 billion in various stocks and continues to sell. Read more on why Buffett and Co. are taking this strategy.

Though Warren Buffett's firm missed out on some gains, Berkshire's Apple trade will likely go down as one of its best in history.

Bank of America was once Berkshire Hathaway's second-largest position, but Buffett has sold about 25% of it so far.