One person who is more familiar with Buffett's life than most is Alice Schroeder, a journalist who wrote the 2008 bestselling biography of Buffett, "The Snowball: Warren Buffett and the Business of Life,

Tens of thousands of shareholders descend on Omaha for Berkshire Hathaway's annual meeting. Chairman and CEO Warren Buffett faces 4 1/2 hours of questions from investors attending the event that's been dubbed "Woodstock for Capitalists."

Billionaire investor Warren Buffett says he wants to step down as chief executive of Berkshire Hathaway at the end of the year.