Berkshire Hathaway (NYSE:BRK-A)(NYSE:BRK-B) recently disclosed its latest stock holdings. The big news was the addition of ExxonMobil (NYSE:XOM), but what else do investors need to know? In this segment of The Motley Fool's financials-focused show, Where the Money Is, financial-sector analysts Matt Koppenheffer and David Hanson discuss Buffett and Berkshire's investing approach.