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Sun Life provides life insurance, retirement, and asset management products to individuals and corporate customers in Canada, the United States, and Asia. The company’s investment management business contributes approximately 30% of its adjusted earnings and has around CAD 1 trillion in assets under management as of the fourth quarter of 2023. The Canada business contributes about 35% of adjusted earnings and provides individual life and health insurance, group insurance, retirement services, and wealth management solutions. The U.S. business contributed approximately 22% of earnings and is mainly focused on providing group insurance products and managing the in-force life insurance policies. Finally, the Asia segment contributes around 13% of earnings.

Sun Life provides life insurance, retirement, and asset management products to individuals and corporate customers in Canada, the United States, and Asia. The company’s investment management business contributes approximately 30% of its adjusted earnings and has around CAD 1 trillion in assets under management as of the fourth quarter of 2023. The Canada business contributes about 35% of adjusted earnings and provides individual life and health insurance, group insurance, retirement services, and wealth management solutions. The U.S. business contributed approximately 22% of earnings and is mainly focused on providing group insurance products and managing the in-force life insurance policies. Finally, the Asia segment contributes around 13% of earnings.

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 these and its other operations over the years 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 five of Berkshire's largest noninsurance pretax earnings generators: Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis.

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 these and its other operations over the years 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 five of Berkshire's largest noninsurance pretax earnings generators: Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis.