Which company is identified by the stock ticker BRK.A for its Class A shares?

Berkshire Hathaway is identified by the stock ticker BRK.A for its Class A shares.

Berkshire Hathaway’s Class A shares trade under BRK.A, while its more accessible Class B shares trade under BRK.B. The company is a diversified holding corporation led for many years by investor Warren Buffett.

Its businesses include insurance operations, rail transportation through BNSF Railway, energy and utilities, manufacturing, retail, and large investments in publicly traded companies. This broad structure makes Berkshire different from a single-product technology company.

BRK.A is famous for having an exceptionally high per-share price, but share price and market capitalization are different measurements. Berkshire’s total market value depends on the price of all outstanding shares, while the high price of one Class A share is partly a result of its share structure.