comScore

One of the top two global audience measurement and media analytics providers, competing primarily with Nielsen for industry currency status across digital and TV platforms.

comScore is a global information and analytics company specializing in audience measurement, advertising verification, and consumer behavior insights across digital, TV, and cross-platform media. Founded in 1999 and headquartered in Reston, Virginia, comScore has established itself as one of the most trusted third-party measurement providers in the media and advertising ecosystem. Its data is used by publishers, advertisers, agencies, and media buyers to understand audience reach, campaign effectiveness, and content consumption patterns. comScore's product portfolio spans digital audience measurement, cross-platform measurement (combining TV and digital), advertising verification, and brand safety solutions. The company's flagship offerings include Unified Digital Measurement (UDM), Campaign Ratings, and Video Metrix, which help clients validate ad delivery, measure deduplicated audiences, and optimize media spend. comScore also provides local market measurement tools used extensively by local TV broadcasters and advertisers in the United States. In the AdTech ecosystem, comScore competes directly with Nielsen and Kantar, positioning itself as a more digitally native and cross-platform-forward alternative. The company has faced financial and governance challenges in the past, including accounting restatements and leadership changes, but has stabilized and continues to be a critical currency provider for media transactions. comScore is publicly traded on the Nasdaq and serves thousands of clients globally, including major media companies, advertising agencies, and brand advertisers.