NIQ (also known as NielsenIQ, formerly known as ACNielsen or AC Nielsen) is a global marketing research firm, with worldwide headquarters in Chicago, United States. The company has approximately 30,000 employees and operates in more than 100 countries. NIQ acquired German market research firm GfK in 2023. Until March 2021, it was a part of Nielsen Holdings. Nielsen Holdings divested its consumer intelligence (by then known as NielsenIQ) business to private equity firm Advent International. The business later rebranded to NIQ. Source: Wikipedia (en)