Which investment company, led for decades by Warren Buffett, has the stock ticker BRK.A?

Berkshire Hathaway is the investment company led for decades by Warren Buffett and traded under the ticker BRK.A for its Class A shares.

The modern company grew from the merger of textile manufacturers Berkshire Fine Spinning Associates and Hathaway Manufacturing in 1955. Buffett began buying Berkshire shares in the 1960s and eventually turned it into a diversified holding company after the textile operation declined. Its businesses and investments have included insurance, railroads, utilities, manufacturing, retail, and major publicly traded stock holdings.

Berkshire's Class A shares are famous for their exceptionally high per-share price, while Class B shares were created in 1996 to make ownership more accessible. BRK.A identifies the Class A stock, not a separate company. Berkshire is often included in market-cap discussions because of its scale, although market capitalization and share price are different measures: market cap multiplies all shares by the current price.