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MBIA Inc provides financial guaranty insurance for municipal bonds and asset-backed securities in the United States and internationally. It offers an unconditional guarantee to repay the principal and interest on these securities if the issuer defaults. MBIA insures bonds sold in the primary and secondary markets, as well as those held in unit investment trusts and mutual funds. It operates in three segments: the United States Public Finance Insurance, which derives maximum revenue, Corporate, and International & Structured Finance Insurance. The U.S. public finance insurance portfolio is managed through the National Public Finance Guarantee Corporation. International & structured finance insurance business is managed through MBIA Insurance Corporation and its subsidiaries.

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.