Berkshire Hathaway is an American multinational conglomerate holding company headquartered in Omaha, Nebraska, United States.

The company wholly owns GEICO, Duracell, Dairy Queen,  BNSF, Lubrizol… and also owns 38.6% of Pilot Flying J; and significant minority holdings in U.S. public companies Kraft Heinz Company (26.7%), American Express (17.6%), Wells Fargo (9.9%), The Coca-Cola Company (9.32%), Bank of America (11.5%), and Apple (5.4%). 

 

According to the Forbes Global 2000 list and formula, Berkshire Hathaway is the eighth largest public company in the world, the tenth largest conglomerate by revenue and the largest financial services company by revenue in the world, with the total assets of 708 billion USD and the revenue of 247,500 million USD in 2018.

According to en.wikipedia