DEFINITION of 'ACNielsen'
A provider of market research and analysis of media and viewer interaction. ACNielsen is part of the Nielson Company and attempts to provide its clients with valuable insights into consumer behavior and marketing information. This is done through data collection and measurement methods that evaluate what consumers watch and what they buy. ACNielsen is best-known for its Nielsen ratings, which measure audiences for television, radio and newspapers in media markets. The company was founded by Arthur C. Nielsen Sr. in 1923, and was incorporated in 1929. It has its headquarters in New York and is part of the privately-held The Nielsen Group.
BREAKING DOWN 'ACNielsen'
The Nielsen Company went public in early 2011, and has offices in more than 100 countries. ACNielsen measures the shopping and media behavior of millions of consumers around the world. Investors and companies use these ratings to predict consumer trends. It serves a number of industries including television, radio, consumer packaged goods & retail, advertising agencies, internet companies, music, video games and sports.