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Servisfirst Bancshares Inc is a bank holding company whose business is conducted by its wholly owned subsidiary. Through the subsidiary, it offers various banking services to individual and corporate customers in Birmingham, Florida, Georgia, North Carolina, South Carolina, Tennessee, and Virginia. Its various products and service offerings include commercial, consumer, and other loans; accepting deposits; providing electronic banking services, such as online and mobile banking, including remote deposit capture; delivering treasury and cash management services; and providing banking services to other financial institutions. The company operates as a single reportable segment, with a majority of its revenue being derived from the business of banking.

Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis.