Berkshire Hathaway Inc.BRK-A

Berkshire Hathaway operates a diverse global portfolio centered on insurance, freight rail, and utilities. Its insurance division provides property, casualty, life, and health coverage. The rail segment manages extensive North American freight networks, while its utility operations span power generation—including renewables, nuclear, and coal—and natural gas infrastructure. Beyond these, the firm maintains a vast manufacturing footprint, producing industrial goods, building materials, and consumer products.