Ströer SE & Co. KGaA is a out-of-home advertising, online advertising, billboards and street furniture company in Germany and Europe with headquarters in Cologne. Its core markets are Germany, Turkey, and Poland. The publicly traded company is listed in the SDAX and the Prime Standard segment of the Frankfurter Börse. In 2016, the revenue was 1.12 billion Euro. Founded in 1990, Stroer has more than 4,000 employees now.