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Alerus Financial Corp is a financial holding company registered in the United States. The company operates in four segments: Banking, Retirement & Benefit Services, Wealth Management, and others. The company provides various banking services such as checking, debit cards, savings, current deposits, loans and advances, online banking, mobile banking, private banking, payment solutions, and other business products. Additionally, the company provides mortgage loans, retirement planning solutions, individual retirement accounts, retirement plan advisory services and wealth management services, including retirement plans, and fiduciary services. The company's revenue mainly consists of interest income, commission, management fees, and other 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.