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Main Street Capital Corp is a principal investment firm focused on providing customized long-term debt and equity capital solutions to lower middle market ("LMM") companies and debt capital to private ("Private Loan") companies owned by or in the process of being acquired by a private equity fund. The group invests principally in secured debt investments, equity investments, warrants, and other securities of LMM companies, typically based in the U.S. The company operates as a single segment with a principal investment objective to maximize total return by generating current income from debt investments and current income and capital appreciation from equity and equity-related investments.

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.