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BOK Financial Corp is a financial institution based in Oklahoma that offers a broad range of nationally competitive financial products and services. The company operates through three main segments: Commercial Banking, Consumer Banking, and Wealth Management. Commercial Banking provides lending, treasury and cash management, and risk management services, and includes the TransFund EFT network. Consumer Banking focuses on retail lending, deposit services, and mortgage loan origination and servicing. Wealth Management engages mainly in brokerage and trading activities, particularly in U.S. government agency mortgage-backed securities and related derivatives. The company generates the majority of its revenue from the Commercial Banking segment.

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.