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Ategrity Specialty Insurance Co Holdings is a specialty property and casualty insurance holding company focused on the excess and surplus market for small to medium-sized businesses (SMBs) across the United States. Operating through its subsidiaries, the company underwrites small and medium-sized commercial risks across selected industry verticals, including Retail, Real Estate, Hospitality, and Construction. Its operating model uses a technology-driven method to standardize, simplify, and, where appropriate, automate these transactions. The group distributes its products through licensed surplus lines brokers and wholesale agents.

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.