Berkshire Hathaway uses the ticker symbol BRK.A for its Class A shares.
Berkshire Hathaway is an American holding company with businesses and investments spanning insurance, railroads, utilities, manufacturing, retail, and financial assets. Its Class A shares trade on the New York Stock Exchange under BRK.A and are famous for their exceptionally high per-share price.
The company also has a more accessible Class B share class, which trades under BRK.B. Berkshire created the Class B shares in 1996 partly to make ownership available to investors who could not afford a single Class A share. Class B shares carry different voting rights and represent a smaller economic interest.
The ticker is sometimes written with a period, as BRK.A, rather than confused with BRK.B, the symbol for the second class. Berkshire's unusual share structure reflects its long-standing preference for retaining capital and allowing shareholders to benefit from the company's combined operating businesses and investment portfolio.