Berkshire is a conglomerate that owns many businesses. These include various leather shoe companies, Dairy Queen the fast food chain, KraftHeinz, Pampered Chef to name a few. http://www.berkshirehathaway.
Berkshire Hathaway, Inc. engages in the provision of property and casualty insurance and reinsurance, utilities and energy, freight rail transportation, finance, manufacturing, retailing, and services. It operates through following segments: GEICO, General Re, Berkshire Hathaway Reinsurance Group, Berkshire Hathaway Primary Group, Burlington Northern Santa Fe, LLC (BNSF), Berkshire Hathaway Energy, McLane Company, Manufacturing, Service and Retailing, and Finance and Financial products. [Source: MarketWatch]