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Westwood Holdings Group Inc manages investment assets and provides services for clients through subsidiaries. It operates its business through the Advisory and Trust segments. Its Advisory segment provides investment advisory services to corporate retirement plans, public retirement plans, endowments, foundations, individuals and the Westwood Funds, as well as investment sub-advisory services to mutual funds and its trust segment. The Trust segment offers trust and custodial services to its clients and its advisory segment sponsors common trust funds to institutions and high net-worth individuals. It generates maximum revenue from the Advisory segment. Geographically, it derives a majority of its revenue from the United States, and also has its presence in Canada.

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.