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Artisan Partners Asset Management Inc is a investment management firm providing a range of investment strategies to a diverse group of clients around the world. Each of the company's strategies is managed by one of its several investment teams. Investment management services are offered to institutions through separate accounts and mutual funds. Artisan's investment offerings include several long-only, equity investment strategies across a multitude of market capitalization segments and investing styles in both the United States and international markets. The company operates as one segment in the investment management business. The company generates maximum portion of its revenues from clients domiciled in countries outside the United States.

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.