Discover how Warren Buffett amassed his $169 billion net worth, and how the Berkshire Hathaway CEO spends his fortune. Greg Abel, 62, is Buffett's choice to be the next CEO of Berkshire Hathaway.

Berkshire, where Buffett serves as chief executive officer and head of investments, entered the Bank of America stake with the purchase of 8.7 million shares in the second quarter of 2007. The ...