Buffett has always favored businesses with durable economic moats. In the health insurance space, the idea of a moat is reinforced by and industry dominated by just a few major players -- with ...

Warren Buffett is known as the greatest long-term investor of all time, but that kind of gives him short shrift. When the Oracle of Omaha steps down as CEO of Berkshire Hathaway (BRK.B) at the end of ...