Which investment company, led for decades by Warren Buffett, is traded under the ticker BRK.A?

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

Berkshire Hathaway began as a textile manufacturer, but Warren Buffett and his associates transformed it into a diversified holding company. It now owns or invests in businesses spanning insurance, rail transportation, energy, manufacturing, retail, and consumer brands.

Its Class A shares, traded under BRK.A, are famous for their very high per-share price. Berkshire also offers Class B shares under BRK.B, which have much lower individual prices and different voting rights.

A high share price does not automatically mean a company has the highest market capitalization. Market cap depends on both share price and the total number of shares outstanding, which is why Berkshire’s share-price record should not be confused with a market-cap ranking.