Berkshire Hathaway Has Nearly 14% of Its $359 Billion Portfolio Invested in This Winning Stock That's Doubled in 5 Years

Key Points Berkshire has a sizable stake in American Express, which has grown to be its second-biggest holding. American Express has positioned its brand to attract an affluent customer base with high spending power. With the stock trading at a P/E ratio of 19.5, it appears to be a compelling buying opportunity. 10 stocks we like better than American Express › Berkshire Hathaway sports a massive market capitalization of $1.1 trillion. But it's worth pointing out that $359 billion of this is represented by its huge public equities portfolio. These stocks have a big effect on the company's performance. Among these holdings, Apple is still at the top of the list. This is despite notable selling happening in recent years.