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Berkshire Hathaway Inc. (BRK.B) is a leading multinational conglomerate holding company with a highly diversified portfolio spanning insurance and reinsurance, utilities and energy, freight rail transportation, manufacturing, services and retailing, among other businesses. The company is headquartered in Omaha, Nebraska and boasts a market cap of around $1.1 trillion, making it one of the largest companies globally.
Companies worth $200 billion or more are generally described as “mega-cap stocks,” and BRK.B definitely fits that description, with its market cap exceeding this threshold, reflecting its substantial size, influence, and dominance in the insurance-diversified industry. It owns major operating subsidiaries such as GEICO, Burlington Northern Santa Fe (BNSF), Berkshire Hathaway Energy and numerous others, and also holds significant equity investments in major companies under its broad investment strategy.