Berkshire Hathaway Inc. has been attracting attention from UBS as the holding company's stake increases. Berkshire Hathaway operates through a diverse range of subsidiaries engaged in various business activities, including insurance, railroads, energy, manufacturing, and retail services.

The company's insurance segment includes well-known entities such as GEICO and the Berkshire Hathaway Primary and Reinsurance Groups. In the transportation sector, the BNSF segment manages extensive rail networks across North America. Berkshire Hathaway Energy provides regulated electric and gas utilities, while the manufacturing segment produces a wide array of industrial, consumer, and construction products. The McLane Company specializes in the wholesale distribution of food and non-food items, and Pilot Travel Centers operates travel centers and serves as a wholesale fuel distributor in North America.

Berkshire Hathaway's broad portfolio highlights its significant presence across multiple industries, solidifying its position as a key player in the market.