It's official. Warren Buffett has asked the board of Berkshire Hathaway (BRK.A 0.15%) (BRK.B 0.04%) to replace him as chief executive officer by the end of 2025. Now 94 years old, Buffett has been signaling a leadership transition for years, carefully building a team capable of heading the diversified business giant in the decades to come. Before he gives up some of his power, Buffett might choose to up Berkshire's stakes in some of his favorite investments. If that occurs, I'm betting on the three stocks b ...