Nielsen Holdings is an American, UK-domiciled, information, data and market measurement firm that provides clients the understanding of what consumers watch and what they buy and how those choices interact. They are a global measurement and data analytics company that sheds light on the most complete and trusted view available of consumers and markets worldwide. Nielsen is an S&P 500 company that operates in over 100 countries, covering more than 90% of the world’s population, and employs approximately 44,000 people worldwide.