LyondellBasell Industries N.V. (NYSE: LYB) is a public multinational chemical company with American and European roots, incorporated in the Netherlands, with U.S. operations headquarters based in Houston, Texas, and global operations in London, UK. It was formed in December 2007 by the acquisition of Lyondell Chemical Company by Basell Polyolefins for $12.7 billion. LyondellBasell was listed on the New York Stock Exchange on October 14, 2010. Lyondell was delisted from the New York Stock Exchange (formerly NYSE: LYO) after the acquisition.