Warren Buffett is the CEO of Berkshire Hathaway.Mario Anzuoni/ReutersWarren Buffett's Berkshire Hathaway purchased stakes in Domino's Pizza and Pool Corp. last quarter.The investing legend's company made big cuts to its huge Apple and Bank of America positions.Berkshire pared other holdings such as Capital One, and sold almost all of its Ulta Beauty shares.Warren Buffett's Berkshire Hathaway took a bite of the pizza business and jumped into the swimming pool industry last quarter.The famed investor's conglomerate bought a slice of Domino's Pizza worth $549 million at the end of September, a portfolio update revealed Thursday.