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First Commonwealth Financial Corp functions in the financial services sector in the United States. Through its subsidiary, it offers a range of consumer and commercial banking services such as personal checking accounts, interest-earning checking accounts, savings accounts, insured money market accounts, investment certificates, fixed & variable rate certificates of deposit, and various kinds of loans. It also provides trust and wealth management services and offers insurance products. The company earns the majority of its revenue through net interest income.

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.