Despite his immense wealth, Warren Buffett, as he admits, is a man of simple tastes. Perhaps that focus on basic American food staples inspired one of the more unexpected new buys from his investment vehicle Berkshire Hathaway (NYSE: BRK.

Berkshire bought 1,277,256 shares of the global pizza delivery chain, which were worth $550 million at the end of the quarter. Domino's shares soared on the news after hours on Thursday, which is typical when Buffett's company buys a new stock. Domino's finished the after-hours session up 7.8%.

Warren Buffett’s Berkshire Hathaway established new positions in consumer companies Domino’s Pizza and Pool Corp. while mostly selling stocks in the third quarter. The Omaha, Neb., company also slashed its recently established stake in Ulta Beauty and cut its holdings of Capital One Financial and Charter Communications,