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%.

Domino’s is seen taking more market share as it promotes its value deals and boosts sales through new delivery partnerships.