Berkshire Hathaway (BRK.A 0.29%) (BRK.B 0.10%) recently disclosed its latest stock holdings. The big news was the addition of ExxonMobil (XOM -3.45%), 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.