Will This Underappreciated Warren Buffett Stock Double Your Money in the Next 5 Years?

Berkshire Hathaway, the sprawling conglomerate that has its hands in various industries, also owns a massive equities portfolio. Given this business is led by the legendary Warren Buffett, it's no surprise that individual investors look at its numerous holdings for investing ideas.The top positions might get a lot of attention, but it's best not to ignore a company like Mastercard (MA 1.62%), which currently makes up just 0.5% of the $367 billion stock portfolio. This tiny stake might make the financial sto ...