Justin Sullivan / Getty Images If any investor has stood the test of time, it is Warren Buffett, and with good reason. For 60 years, the Oracle of Omaha has had a rock-star-like presence in the investing world, and his annual Berkshire Hathaway shareholders meeting draws thousands of loyal fans who are investors. They were stunned at this year's meeting when Buffett announced that he would be stepping down as CEO of the investment giant at the end of the year. While he will remain board chair and continue ...