Warren Buffett acquired Berkshire Hathaway back in 1965. Over the first few decades of operation, the company soared in value. In the 1980s, for example, Berkshire stock rose in value by at least 30% most years, with annual returns reaching as high as 90%.

Berkshire Hathaway increased its stake after billionaire John Malone’s Liberty Media completed the deal to combine its tracking stock with the rest of the audio entertainment co

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.