Shares of Berkshire Hathaway Inc. Cl B rallied 1.33% to $411.17 Friday, on what proved to be an all-around favorable trading session for the stock market, with the S&P 500 Index rising 0.54% to 5,567.

Few stocks have performed as well as Berkshire Hathaway ( BRK.A -0.29%) ( BRK.B -0.40%). Since 1965, shares have increased in value by nearly 4,000,000%! A $10,000 investment would now be worth more than $350 million.

Warren Buffett is one of our most celebrated stock pickers, hence the decades-long popularity of his investment vehicle Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B). Scores of investors think the Buffett team's legendary acumen is enough to stay planted in the stock.

Shares of Berkshire Hathaway Inc. Cl B sank 0.33% to $405.77 Wednesday, on what proved to be an all-around mixed trading session for the stock market, with the S&P 500 Index rising 0.51% to 5,537.02 and the Dow Jones Industrial Average falling 0.