Which company has the stock ticker BRK.A and is associated with investor Warren Buffett?

Berkshire Hathaway has the stock ticker BRK.A and is associated with investor Warren Buffett.

Berkshire Hathaway is a U.S. holding company led for decades by Warren Buffett. Its Class A shares trade under BRK.A, while its lower-priced Class B shares trade under BRK.B. The two classes represent the same corporate group but have different voting and economic rights.

The company owns operating businesses in insurance, railroads, utilities, manufacturing, retail, and other sectors. Major holdings and subsidiaries have included GEICO, BNSF Railway, and Berkshire Hathaway Energy. This diversified structure makes Berkshire different from a conventional single-industry corporation.

Berkshire began as a textile manufacturer formed through the 1955 merger of Berkshire Fine Spinning Associates and Hathaway Manufacturing. Buffett began acquiring shares in the 1960s and transformed the struggling textile business into a diversified investment and operating company.