Sustainable Impact Investing, or ESG investing, is gaining traction not only with Argus Research clients but also with the global investment community. BlackRock CEO Lawrence Fink, who oversees approximately $9 trillion in assets, announced in January 2020 that his firm would be investing in companies that are making progress on sustainability. He doubled down in his January 2021 letter, calling on company managements to disclose their plans for making their businesses "compatible with a net-zero economy" by 2050. As assets have flowed in over the past 40 years, Sustainable Impact Investing has evolved. The discipline, originally known as Socially Responsible Investing, focused at first on excluding companies that conducted business in South Africa, or participated in industries such as tobacco, alcohol, and firearms. Performance of these initial strategies lagged, and the approach has been modified. Now, instead of merely identifying industries to avoid, the discipline promotes "sustainable" business practices across all industries that can have an "impact" on global issues such as climate, hunger, poverty, disease, shelter, and workers' rights.

Berkshire Hathaway is a holding company with subsidiaries in a diverse range of industries, including insurance, railroads, utilities, energy, finance, manufacturing, and retailing. Its major subsidiaries include GEICO, Burlington Northern Santa Fe, Precision Castparts, and McLane Company. As of March 31, 2023, Berkshire also had about $354 billion of equity investments, including significant stakes in Apple Inc., Bank of America, Coca-Cola, American Express and Chevron.

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.