The company wholly owns GEICO, Dairy Queen, BNSF Railway, Lubrizol, Fruit of the Loom, Helzberg Diamonds, Long & Foster, FlightSafety International, Pampered Chef, and NetJets, and also owns 38.6% of Pilot Flying J; 26.7% of the Kraft Heinz Company, and significant minority holdings in American Express (17.6%), Wells Fargo (9.9%), The Coca-Cola Company (9.4%), Bank of America (6.8%), and Apple (nearly 5%). Since 2016, the company has acquired large holdings in the major US airline carriers, and is currently the largest shareholder in United Airlines and Delta Air Lines, and a top three shareholder in Southwest Airlines and American Airlines. Berkshire Hathaway has averaged an annual growth in book value of 19.0% to its shareholders since 1965 (compared to 9.7% from the S&P 500 with dividends included for the same period), while employing large amounts of capital, and minimal debt.
Berkshire Hathaway traces its roots to a textile manufacturing company established by Oliver Chace in 1839 as the Valley Falls Company in Valley Falls, Rhode Island. Chace had previously worked for Samuel Slater, the founder of the first successful textile mill in America. Chace founded his first textile mill in 1806. In 1929, the Valley Falls Company merged with the Berkshire Cotton Manufacturing Company established in 1889, in Adams, Massachusetts. The combined company was known as Berkshire Fine Spinning Associates.
In 1955, Berkshire Fine Spinning Associates merged with the Hathaway Manufacturing Company which had been founded in 1888 in New Bedford, Massachusetts by Horatio Hathaway with profits from whaling and the China Trade. In 1962, Warren Buffett began buying stock in Berkshire Hathaway
The company is known for its control and leadership by Warren Buffett, who serves as chairman and chief executive, and Charlie Munger, the company's vice chairman.Warren Buffett considered one of the most successful investors in the world and has a net worth of US$84 billion as of June 3, 2018, making him the fourth wealthiest person in the world.
In the early part of Buffett's career at Berkshire, he focused on long-term investments in publicly traded companies, but more recently he has more frequently bought whole companies. Berkshire now owns a diverse range of businesses including confectionery, retail, railroads, home furnishings, encyclopedias, manufacturers of vacuum cleaners, jewelry sales, newspaper publishing, manufacture and distribution of uniforms, and several regional electric and gas utilities.
Berkshire Hathaway is the third largest public company in the world, the ninth largest conglomerate by revenue and the largest financial services company by revenue in the world.
According to wikipedia