Comscore

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Global media measurement and analytics company serving advertisers, agencies, publishers, and media owners.

Last updated October 15, 2026

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Overview

Comscore is a United States-based media measurement and analytics company founded in Reston, Virginia, in July 1999 by Gian Fulgoni and Magid Abraham. The company developed from the internet audience-measurement market and became known for combining consumer panels, census-based digital signals, and statistical modeling to estimate media audiences, engagement, advertising delivery, and consumer behavior. Its customers include advertising agencies, brand marketers, publishers, broadcasters, streaming services, media owners, and other enterprises that need independent information about who is consuming content and how campaigns perform across platforms. The company’s early business centered on measuring internet usage and digital audiences. Its acquisition of Media Metrix in 2002 brought a prominent web-audience measurement service into Comscore’s portfolio and helped establish the Comscore Media Metrix brand. Comscore subsequently expanded into mobile measurement, web analytics, campaign verification, advertising effectiveness, local television measurement, programmatic audience targeting, social-media analytics, and cross-platform television and digital measurement. The acquisition of M:Metrics in 2008 added mobile-content measurement capabilities, while the purchase of Nedstat in 2010 strengthened its digital analytics business. The 2016 combination with Rentrak was a major strategic step: it joined Comscore’s digital audience expertise with Rentrak’s television and movie measurement operations and was intended to create a broader competitor in cross-platform media measurement. Comscore’s products and methodologies have generally sought to solve fragmentation in media consumption. Its Unified Digital Measurement approach combined panel information with census-level activity to estimate digital reach while reducing the effect of cookie deletion and rejection. Campaign Essentials and validated Campaign Essentials were designed to assess whether digital advertising reached intended audiences and whether impressions met specified quality or viewability standards. Following the Rentrak transaction, Comscore also developed products for national and local television, advanced television, movie measurement, and cross-media planning. The company has used panels recruited through multiple channels, including offline recruitment and software-enabled research panels, and applies demographic weighting and validation procedures to make its estimates more representative of broader populations. Comscore became a public company through an initial public offering on Nasdaq on March 30, 2007, under the symbol SCOR. Its corporate history later included leadership changes, a financial-restatement process, and scrutiny from regulators and investors. In 2019, the U.S. Securities and Exchange Commission charged Comscore and former chief executive Serge Matta over alleged revenue overstatement and misleading disclosures; Comscore’s new management settled the charges without admitting or denying wrongdoing and paid a civil penalty. The episode prompted changes to internal controls, compliance processes, and senior management. The company has continued to position itself as an independent measurement provider in an increasingly fragmented market spanning connected television, streaming, social media, mobile devices, desktops, and traditional broadcast and cable television. Its offerings include audience measurement, campaign measurement, content and consumer analytics, local television ratings, advanced television solutions, and programmatic targeting through Proximic by Comscore. Comscore also expanded its social analytics capabilities through the acquisition of Shareablee in 2021. Its present role is that of a specialist data and measurement provider whose products help media companies sell inventory, help marketers evaluate reach and outcomes, and help agencies plan and verify campaigns across digital and television environments.

History

Comscore was established in July 1999 in Reston, Virginia, by Gian Fulgoni and Magid Abraham, both of whom had previously worked at Information Resources, Inc. The company entered a rapidly expanding internet research market in which advertisers and publishers needed independent estimates of online reach, usage, and consumer behavior. Its early services relied on research panels and software-enabled observation of internet activity, with statistical weighting used to produce estimates for broader populations. A major early turning point came in June 2002, when Comscore acquired Media Metrix. Media Metrix had originated as PC Meter within the NPD Group, adopted the Media Metrix name in 1997, and later combined with Relevant Knowledge. The acquisition gave Comscore a widely recognized internet audience-measurement property during the period when web publishers and advertisers were seeking alternatives to server-log data and emerging competitor services. Comscore expanded beyond desktop web measurement during the following decade. It acquired M:Metrics in 2008 to add mobile-content research, introduced Unified Digital Measurement in 2009 to combine panel and census-based methods, and acquired several businesses in 2009 and 2010, including Certifica, ARSgroup, the products division of Nexius, and Nedstat. These transactions broadened the company’s geographic reach, advertising analytics, digital analytics, and mobile capabilities. Campaign Essentials, launched in 2010, and validated Campaign Essentials, introduced in 2012, addressed advertisers’ need to evaluate campaign reach, audience composition, impression quality, and related delivery measures. Comscore became publicly traded on Nasdaq on March 30, 2007, under the symbol SCOR. It later expanded its data and targeting portfolio through a 2015 partnership and equity arrangement involving Kantar and through the acquisition of Proximic, a California-based analytics company. In September 2015, Comscore announced an all-stock merger with Rentrak. The transaction closed on February 1, 2016, with the combined company seeking to integrate Comscore’s digital expertise with Rentrak’s television and movie measurement operations. This was a central part of Comscore’s attempt to offer cross-platform measurement as audiences moved among broadcast television, cable, connected television, streaming services, mobile devices, and desktop web properties. The company experienced significant governance and reporting difficulties during the middle of the decade. Serge Matta became CEO in 2014, and co-founder Gian Fulgoni returned to the CEO role in August 2016. In September 2016, Nasdaq warned that Comscore could be delisted if it did not file overdue annual and quarterly reports. Comscore subsequently disclosed that it would not meet a Nasdaq-imposed deadline while completing a financial restatement and attempting to regain compliance. The company also changed senior leadership: Bryan Wiener became CEO in 2018, but he and President Sarah Hofstetter announced their departures in April 2019, citing strategic differences with the board. Bill Livek, who had held senior leadership roles at Rentrak, became CEO and executive vice chairman in November 2019. Regulatory scrutiny culminated in 2019 when the SEC charged Comscore and former CEO Serge Matta with a scheme that allegedly overstated revenue by approximately $50 million and involved misleading statements about customer and product metrics. The allegations concerned the company’s reported growth and revenue-recognition practices. Comscore’s new management settled the charges without admitting or denying wrongdoing and paid a $5 million civil penalty. The company said it implemented new internal controls, compliance procedures, and related governance reforms. The episode remains an important part of Comscore’s corporate history because it affected investor confidence, reporting processes, leadership, and the company’s relationship with regulators. Comscore continued to develop measurement products after the regulatory episode. In April 2020, it introduced a faster local television ratings service designed to provide data in about 48 hours. In December 2021, it acquired Shareablee, adding social-media marketing analytics and measurement. In 2023, its programmatic targeting business was reorganized and presented under the Proximic by Comscore name. The company has also continued promoting products that connect television, streaming, digital advertising, social signals, and consumer behavior. In 2025, Comscore announced Comscore Content Measurement, a product intended to combine audience insights from streaming and traditional television with social, mobile, and desktop information. Across these stages, Comscore’s strategic identity has remained focused on independent media measurement, advertising verification, audience analytics, and the integration of fragmented media data.

2023
Proximic by Comscore rebrand
[7]Proximic by Comscore rebrandcomscore.com
The company groups its programmatic targeting business under the Proximic by Comscore brand.
2021
Shareablee acquisition
[5]Comscore Acquires Shareableecomscore.com
The acquisition adds social-media analytics and measurement to Comscore’s portfolio.
2019
SEC settlement
[2]SEC Charges Comscore and Former CEO with Fraudsec.gov
Comscore settles SEC charges concerning alleged revenue overstatement and misleading disclosures, while undertaking compliance and control reforms.
2016
Rentrak merger closes
[1]Comscoreen.wikipedia.org
Comscore completes its combination with Rentrak, broadening the business into television and movie measurement.
2015
Proximic acquisition
[4]Comscore to Acquire Proximiccomscore.com
Comscore acquires Proximic to expand analytics and programmatic targeting capabilities.
2010
Campaign Essentials introduced
[1]Comscoreen.wikipedia.org
Comscore begins offering a dedicated service for measuring digital advertising campaign delivery and reach.
2009
Unified Digital Measurement introduced
[1]Comscoreen.wikipedia.org
Comscore launches a methodology combining panel and census-based digital measurement.
2008
M:Metrics acquisition
[3]Comscore to Acquire M:Metricscomscore.com
The company expands into mobile-content measurement.
2007
Initial public offering
[1]Comscoreen.wikipedia.org
Comscore lists on Nasdaq under the ticker SCOR.
2002
Media Metrix acquisition
[1]Comscoreen.wikipedia.org
Comscore acquires Media Metrix, strengthening its position in web-audience measurement.
1999
Comscore is founded
[1]Comscoreen.wikipedia.org
Gian Fulgoni and Magid Abraham establish Comscore in Reston, Virginia, to provide internet audience research and measurement.

Products and positioning

Independent, enterprise-oriented media measurement and analytics, with emphasis on cross-platform comparability, advertising validation, audience intelligence, and television-digital convergence.

Digital audience measurement · 2002
Comscore Media Metrix
Media Metrix is Comscore’s established web-audience measurement service. It reports estimated reach, usage, rankings, and audience characteristics for digital properties. The service originated before Comscore’s acquisition of the Media Metrix business in 2002 and became one of the company’s best-known measurement brands for publishers, agencies, and advertisers comparing online audiences.
Video audience measurement
Comscore Video Metrix
Video Metrix measures online video consumption and provides information about audiences, viewing activity, and video properties. It supports comparisons among publishers and platforms and helps marketers understand the scale and composition of digital video audiences.
Digital audience measurement · 2009
Unified Digital Measurement
Unified Digital Measurement combines panel-based research with census-level digital activity. Its purpose is to produce broader digital reach estimates while reducing dependence on any single measurement source and mitigating the impact of cookie deletion and rejection.
Advertising measurement · 2010
Campaign Essentials
Campaign Essentials evaluates digital advertising campaigns by examining delivery, reach, audience composition, and related campaign outcomes. It is designed for agencies, marketers, and media owners that need independent evidence about whether advertising reached intended audiences.
Advertising verification · 2012
Validated Campaign Essentials
Validated Campaign Essentials extends campaign measurement through validated-impression concepts and quality checks. The service is intended to help buyers assess whether impressions were viewable, reached appropriate audiences, and satisfied agreed campaign criteria.
Programmatic targeting · 2023
Proximic by Comscore
Proximic by Comscore is the company’s programmatic targeting and audience-data business. It uses contextual, content, and audience signals to support media planning and activation without relying exclusively on conventional individual-level identifiers. The current branding builds on Comscore’s acquisition of Proximic in 2015.
Cross-platform content measurement · 2025
Comscore Content Measurement
Comscore Content Measurement combines audience insights related to streaming and traditional television with social, mobile, and desktop signals. It is intended to help publishers and media owners understand audience segments, content consumption, distribution opportunities, and potential programmatic partnerships.

Controversies

2026
Comscore agrees to settle SEC fraud charges
Comscore and its former CEO Serge Matta agreed to pay penalties after the U.S. Securities and Exchange Commission charged them with fraud involving overstated revenue and false or misleading statements about key performance metrics. According to the SEC's orders, Comscore and Matta manipulated accounting and made misleading disclosures. The settlement resolves the SEC's fraud charges against the company and its former chief executive.
Source
2019
SEC revenue and disclosure case
The SEC alleged that Comscore and former CEO Serge Matta overstated revenue by about $50 million and made misleading statements about customer and product metrics. The allegations included claims that the conduct helped the company exceed analyst revenue expectations over multiple quarters. Comscore’s new management settled for $5 million without admitting or denying wrongdoing and said it implemented enhanced internal controls and compliance measures.
Source
2010
Privacy and spyware allegations involving VoiceFive
Security reporting associated certain Mac software allegations with VoiceFive, a Comscore-related panel brand. The broader controversy concerned the transparency and provenance of research software distributed through free applications. VoiceFive later described compliance with privacy frameworks including the EU-U.S. Privacy Shield, Swiss-U.S. Privacy Shield, and GDPR.
Source
2006
Criticism over panel software distribution
Researchers and technology commentators alleged that Comscore-related monitoring software had at times been installed or bundled without sufficiently clear user awareness. Reports also discussed a short-lived relationship involving file-sharing software and allegations concerning distribution through DollarRevenue. Comscore stated that it did not authorize DollarRevenue to distribute its software and took steps to block data from software distributed through that channel.
Source

2018Comscore brand refresh
United States · International
Comscore updated its visual identity and increasingly adopted lowercase “comscore” styling to present the company as a modern, integrated measurement platform following its expansion into television and cross-platform analytics.
Outcome. Brand identity updated; the company continued to use both Comscore and comscore forms in different contexts.
Source
2018Free Viewability
Europe · International
Comscore promoted Free Viewability as a digital advertising measurement offer that allowed buyers to assess video and display campaign viewability without an initial measurement charge.
Outcome. The initiative received recognition in the IAB Europe Research Awards.
Source

Brand decisions

2021
Acquire ShareableeM&A
Background
Social platforms had become important sources of content engagement and marketing intelligence.
Action taken
Comscore acquired Shareablee, a social-media marketing analytics and measurement company.
Aftermath
Comscore added social-media analytics to its broader cross-platform measurement portfolio.
Source
2020
Accelerate local television ratingsProduct launch
Background
Local broadcasters and advertisers needed more timely audience data than traditional ratings cycles provided.
Action taken
Comscore launched a local TV ratings service with an advertised turnaround of approximately 48 hours.
Aftermath
The service was positioned as a faster operational tool for local television measurement.
Source
2015
Acquire ProximicM&A
Background
Comscore wanted to extend its data products into analytics and audience targeting for programmatic advertising.
Action taken
Comscore acquired California-based Proximic.
Aftermath
The capabilities later formed the basis of Proximic by Comscore.
Source
2015
Combine with RentrakM&A
Background
Media consumption was fragmenting across digital video, television, and movie platforms, creating demand for cross-platform measurement.
Action taken
Comscore agreed to an all-stock combination with Rentrak, with the transaction closing on February 1, 2016.
Aftermath
The combined business broadened Comscore’s television and movie measurement operations and its ambition to challenge larger measurement providers.
Final transaction value. 767.7 million (Transaction closing, 2016)
- Nielsen — The combination was widely framed as creating a broader competitor in television and cross-platform media measurement.
Source
2008
Acquire M:MetricsM&A
Background
Mobile phones and mobile content were becoming important parts of consumer media consumption.
Action taken
Comscore agreed to acquire mobile measurement company M:Metrics for cash consideration and equity-option arrangements.
Aftermath
Comscore expanded its mobile audience and content measurement capabilities.
Cash consideration. 44.3 million (2008 transaction announcement)
Source
2002
Acquire Media MetrixM&A
Background
Comscore sought to strengthen its position in internet audience measurement during a period of rapid growth and consolidation in online advertising research.
Action taken
Comscore acquired the Media Metrix service from Jupiter Media Metrix.
Aftermath
Media Metrix became a central Comscore audience-measurement brand.
Source

Recent events

2025
Comscore introduces Comscore Content Measurement[9]Comscore推出Comscore Content Measurementcomscore.com
Product launch
The product was described as combining audience insights across streaming and traditional television with social, mobile, and desktop signals.
2023
Comscore announces Proximic by Comscore brand[7]Proximic by Comscore rebrandcomscore.com
Product launch
Comscore consolidated its programmatic targeting capabilities under the Proximic by Comscore name.
2021
Comscore acquires Shareablee[5]Comscore Acquires Shareableecomscore.com
M&A
The acquisition expanded Comscore’s social-media measurement and marketing analytics capabilities.
2020
Comscore launches faster local television ratings service[1]Comscoreen.wikipedia.org
Product launch
The service shortened the reported turnaround for local TV ratings from roughly two weeks to approximately 48 hours.
2019
Bill Livek appointed CEO and executive vice chairman[1]Comscoreen.wikipedia.org
Leadership change
Livek, formerly associated with Rentrak, became Comscore’s CEO and executive vice chairman in November 2019.
2018
Bryan Wiener named chief executive officer[1]Comscoreen.wikipedia.org
Leadership change
Wiener was appointed CEO effective May 30, 2018, during a period of corporate repositioning and brand redesign.
2018
Comscore changes brand styling[1]Comscoreen.wikipedia.org
Campaign · Other
The company introduced a refreshed visual identity and increasingly used the lowercase styling “comscore.”
2016
Comscore completes Rentrak combination[1]Comscoreen.wikipedia.org
M&A
The transaction closed on February 1, 2016, creating a broader cross-platform measurement company.
2016
Comscore faces Nasdaq compliance and restatement issues[1]Comscoreen.wikipedia.org
Regulation · Other
Nasdaq warned that the company risked suspension and delisting while it worked to file overdue reports and complete a financial restatement.
2015
Comscore acquires Proximic[4]Comscore to Acquire Proximiccomscore.com
M&A
The acquisition added analytics and audience-targeting capabilities.

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