Berkshire Hathaway Inc.BRK-B

Berkshire Hathaway is a global conglomerate centered on insurance, freight rail, and utilities. Its insurance segment provides property, casualty, life, and health coverage. The company operates extensive North American freight rail networks and a utility division managing electricity generation—via natural gas, coal, wind, solar, and nuclear—and natural gas infrastructure. Its diverse portfolio includes manufacturing (chemicals, aerospace components, building materials), residential construction, retail, and logistics.