Sears, Roebuck and Company, colloquially known as Sears, is a chain of department stores founded by Richard Warren Sears and Alvah Curtis Roebuck in 1893, reincorporated (a formality for a history-making consumer sector initial public offering) by Richard Sears and new partner Julius Rosenwald in 1906. Formerly based at the Sears Tower in Chicago and currently headquartered in Hoffman Estates, Illinois, the operation began as a mail ordering catalog company and began opening retail locations in 1925. The first location was in Evansville, Indiana. In 2005, the company was bought by the management of the American big box chain Kmart, which formed Sears Holdings upon completion of the merger.