Warren Buffett is the second wealthiest man in America and one of the richest investors in the world. He is the CEO of Berkshire Hathaway, an insurance and investment company based in Omaha, Nebraska. Berkshire Hathaway owns several well-known companies, such as GEICO and Dairy Queen. Warren Buffett is known for his frugal lifestyle and innate investing abilities. He is preparing to retire and successors will take over running Berkshire Hathaway.