Nielsen

Dominant incumbent and long-standing currency provider for TV and cross-media audience measurement globally, facing growing competition from alternative measurement providers

Nielsen is one of the world's most recognized data and measurement companies, best known for its television ratings that have served as the currency of the media buying and selling ecosystem for decades. Founded in 1923 by Arthur C. Nielsen Sr., the company pioneered audience measurement and has since expanded its capabilities to cover digital, streaming, audio, and out-of-home media. Nielsen's measurement data is used by broadcasters, advertisers, agencies, and streaming platforms to understand who is watching, listening, and engaging with content across virtually every media channel. In the AdTech ecosystem, Nielsen plays a foundational role by providing the audience measurement infrastructure that underpins media planning, buying, and selling. Its Nielsen ONE cross-media measurement platform represents the company's push to unify audience measurement across linear TV, streaming, digital, and other channels into a single, deduplicated view. Nielsen also offers advertising effectiveness solutions through its Nielsen Marketing Cloud and related products, helping brands understand the ROI of their media investments through tools like Marketing Mix Modeling (MMM) and attribution analytics. Nielsen went through a significant corporate restructuring period, spinning off its Nielsen Global Connect (retail measurement) business as NielsenIQ in 2021 after being taken private by a consortium of private equity firms led by Evercore and Elliott Management. The remaining Nielsen entity, focused on media measurement, was subsequently acquired by a consortium led by Brookfield Business Partners in 2022. Nielsen remains a dominant force in audience measurement, though it faces increasing competition from alternative measurement providers as the media landscape fragments and clients demand more granular, real-time data.