Nielsen

What does Nielsen own?
Nielsen owns its audience measurement products including Nielsen ONE, Nielsen Audio, and its advertising intelligence services, plus the Gracenote entertainment metadata business. It sold its consumer packaged goods arm, NielsenIQ, in 2020.

Is Nielsen publicly traded?
No. Nielsen traded on the NYSE as NLSN until October 2022, when an Elliott and Brookfield-led consortium took it private in a $16 billion deal at $28 per share. It has no public ticker.

Who founded Nielsen?
Arthur C. Nielsen Sr. founded the A.C. Nielsen Company in Chicago in 1923. He invented the market share measurement concept and later built the television ratings system the company is known for.

Where is Nielsen headquartered?
Nielsen is headquartered at 675 Sixth Avenue in New York City, with operations in about 30 countries.

How many brands does Nielsen own?
Nielsen operates under one master brand with named products including Nielsen ONE, Nielsen Audio, and Gracenote. The NielsenIQ business it sold is a separate company now listed on the NYSE as NIQ.

Who owns Nielsen?
Nielsen is owned by a private equity consortium led by Evergreen Coast Capital, an affiliate of Elliott Investment Management, and Brookfield Business Partners with institutional partners.

Arthur C. Nielsen Sr., an engineer by training, founded the A.C. Nielsen Company in Chicago in 1923. His first product was retail measurement: tracking what stores sold so manufacturers could see their market share for the first time. The invention of the market share concept made Nielsen's firm essential to packaged goods companies through the mid-20th century.

The company moved into media in the 1930s and 1940s, first measuring radio audiences and then, after acquiring the Audimeter patents in 1936, developing the household meter that produced national television ratings from the 1950s onward. Nielsen ratings became the settlement currency for tens of billions in annual TV advertising.

Ownership changed repeatedly. Dun & Bradstreet acquired the company in 1984, later spinning it into a Dutch-listed entity. A Valcon Acquisition consortium of AlpInvest and Carlyle took it private in 2006, then returned it to public markets through a 2011 NYSE IPO under the ticker NLSN.

The streaming era forced a breakup. Under pressure from activist investors, Nielsen sold the Global Connect consumer business as NielsenIQ to Advent International for $2.7 billion in 2020, then accepted a $16 billion take-private offer from the Evergreen and Brookfield consortium that closed October 11, 2022. Shareholders received $28 per share and the stock delisted the next day.

Under private ownership the company has pushed Nielsen ONE as its answer to streaming fragmentation and to criticism from networks that its panels undercounted audiences during the pandemic. Nielsen lost and then regained industry accreditation for national TV ratings, launched Big Data plus Panel measurement incorporating return-path data from millions of devices, and in 2025 expanded out-of-home and streaming measurement coverage as ad spending continued shifting to digital video.

Nielsen's central controversy is the accuracy of its measurement. In 2021, the Media Rating Council suspended accreditation for its national TV ratings after networks charged that pandemic-era panel maintenance undercounted audiences, a humiliation for a company whose product is accuracy itself. Accreditation was restored in 2022 after methodology changes, but the episode opened the door to rival currencies.

Networks have periodically sued or publicly feuded with Nielsen over ratings methodology, including a 2025 dispute in which some broadcasters alleged its measurement disadvantaged them. As a private company it also carries the leveraged debt of the 2022 buyout, and rating agencies have tracked its credit metrics as advertising markets softened.