GfK

The GfK SE, established in 1934 as Gesellschaft für Konsumforschung (Society for Consumer Research) is Germany's largest market research institute, and the fourth largest market research organisation in the world, after Nielsen Company, Kantar Group and Ipsos. It was founded by an association of university teachers, among them Ludwig Erhard, later Minister for Economics and Chancellor of Germany. In May 2008 it acquired an equity stake in Deep-Packet Inspection company Qosmos in order to track and monitor Internet usage for marketing research.

GfK

The GfK SE, established in 1934 as Gesellschaft für Konsumforschung (Society for Consumer Research) is Germany's largest market research institute, and the fourth largest market research organisation in the world, after Nielsen Company, Kantar Group and Ipsos. It was founded by an association of university teachers, among them Ludwig Erhard, later Minister for Economics and Chancellor of Germany. In May 2008 it acquired an equity stake in Deep-Packet Inspection company Qosmos in order to track and monitor Internet usage for marketing research.