Despite Berkshire Hathaway holding stakes in 43 stocks and two index funds, $210 billion of invested assets can currently be traced to only five brand-name businesses.

As for stocks, Berkshire ( BRK.B) owns more than 45 positions with a market value of $311 billion. That’s equal to 32% of Berkshire’s $979 billion market capitalization. So these stocks are a big deal for the company.

Warren Buffett's Berkshire Hathaway is buying the rest of its utility unit from the estate of a longtime board member who died three years ago, but it's not clear exactly how much it will pay for the 8% stake.