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eHealth Inc is a company involved in private health insurance marketplace with a technology and service platform that provides consumer engagement, education and health insurance enrollment solutions. The company operates its business in two segments: Medicare which provides health insurance plans and lesser extent ancillary products such as dental and vision insurance and hospital indemnity plans, to medicare eligible consumers; and Employer and Individual provides individual and family health insurance, and small business health insurance plans and Individual Coverage Health Reimbursement Arrangements. It derives maximum revenue from Medicare Segment. All of the company's revenue is derived from the United States. It also has a presence in China.

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.