Key Points Warren Buffett invests in stocks with competitive advantages. Like the Oracle of Omaha, investors should not ignore valuation. Portfolio diversification is also important -- but not too much. 10 stocks we like better than Berkshire Hathaway › A lot of people want to invest like Warren Buffett. The self-made investor turned himself into one of the richest people in the world through a lifetime of value investing while also creating immense wealth for longtime shareholders of Berkshire H ...