The Independent3. Buffett would question Exelixis' moatMotley FoolWarren Buffett loves stocks of companies that have moats, or sustainable competitive advantages. He wants to own businesses that can keep growing earnings and cash flow over the long run. He once said, "If you aren't willing to own a stock for 10 years ...How to Travel in Style Exactly Like Billionaire Warren BuffettTheStreet.comLessons From Charlie Munger's PartnershipValueWalkThe wealthiest local sheriff in America is starting his first full week on the jobQuartzLeafly -Wall Street Journal (subscription) (blog) -The Motley Fool Canada -Intelligent Investorall 25 news articles »