Which company has used the market ticker BRK.A for its highest-priced publicly traded shares?

Berkshire Hathaway has used the market ticker BRK.A for its highest-priced publicly traded shares.

Berkshire Hathaway’s Class A shares trade under the symbol BRK.A, while its more accessible Class B shares trade under BRK.B. The two classes represent ownership in the same company but have different voting rights and share structures.

Class A shares became famous for their extremely high per-share price because Berkshire has never carried out a conventional stock split for that class. The company’s policy reflects Warren Buffett’s preference for attracting long-term shareholders and discouraging short-term trading.

Berkshire Hathaway owns operating businesses and investments across insurance, railroads, utilities, manufacturing, and consumer brands. Its market capitalization has made it one of the largest U.S. public companies outside the technology sector.