<Tr> <Th> Number of employees </Th> <Td> 13,069 (2018) </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.gfk.com </Td> </Tr> <P> 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 . </P> <P> In April 2005 it acquired NOP World, based mostly in the United Kingdom, the United States and Italy, which was rated the ninth largest market research business in the world . </P>

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