Berkshire Hathaway Inc. Class B is a diversified holding company that operates across insurance, reinsurance, freight rail transportation, utilities and energy, manufacturing, and retailing. Berkshire Hathaway Inc. Class B serves as the more accessible share class of Berkshire Hathaway’s common stock, giving investors exposure to a broad portfolio of operating businesses and listed equity investments through a single security. The company’s core activities include property and casualty insurance, railroad operations through BNSF, energy generation and distribution through Berkshire Hathaway Energy, and a range of industrial, consumer, and service businesses. This structure makes Berkshire Hathaway Inc. Class B a key name in the U.S. financial market, often viewed as a large-cap conglomerate with a highly diversified business base and a long-standing presence in multiple essential sectors.