Company lists · Data refreshed November 2026

Top 25 Ad effectiveness measurement firms worldwide

RevenueBase identified 287 company matches for ad effectiveness measurement firms worldwide as of November 2026 and tracks 16,939 professional contacts across them, including 5,960 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for ad effectiveness measurement firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for ad effectiveness measurement firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
287Companies
16,939Contacts tracked
5,960Verified emails
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The 25 largest ad effectiveness measurement firms worldwide

Ranked by team size
Top 25 of 287 company matches for ad effectiveness measurement firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261,001-5,0002,953 contacts →

Exact match

“Kantar IBOPE Media agora é Ibope.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNew York, United StatesHQ recorded Nov 6, 2026501-1,0001,406 contacts →

Exact match

“DoubleVerify is a leading software platform for digital media measurement and analytics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchReston, VA, United StatesHQ recorded Nov 6, 20261,001-5,0001,331 contacts →

Exact match

“Comscore (NASDAQ: SCOR) is a global, trusted partner for planning, transacting and evaluating media across platforms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0001,171 contacts →

Exact match

“Kantar Media is now Fifty5Blue.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMumbai, IndiaHQ recorded Nov 6, 2026501-1,000721 contacts →

Exact match

“TAM Media Research, is a 50:50 joint venture between two global media research organizations, Nielsen & Kantar Media Research.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000651 contacts →

Exact match

“Ebiquity is the independent authority in Marketing Effectiveness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 2026501-1,000614 contacts →

Exact match

“Ovative Group is an independent, full-funnel media, measurement, and creative firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchIndonesiaHQ recorded Nov 6, 202610001+595 contacts →

Exact match

“Nielsen is a global performance management company that provides a comprehensive understanding of what consumers Watch and Buy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchCulver City, CA, United StatesHQ recorded Nov 6, 2026501-1,000548 contacts →

Exact match

“MarketCast measures what moves people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNew York, United StatesHQ recorded Nov 6, 202651-200541 contacts →

Exact match

“good apple builds smarter strategies that drive real impact.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBellevue, WA, United StatesHQ recorded Nov 6, 2026201-500392 contacts →

Exact match

“iSpot helps advertisers measure the brand and business impact of TV and streaming advertising, from concept to airing to conversion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGlendale, CT, United StatesHQ recorded Nov 6, 2026201-500318 contacts →

Exact match

“DISQO is a leading provider of advertising outcomes intelligence, measuring brand and performance outcomes across every media channel to power data-driven marketing decisions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Nov 6, 20261,001-5,000242 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPortland, OR, United StatesHQ recorded Nov 6, 2026201-500213 contacts →

Exact match

“Rentrak is the definitive global source for box office data, analytics, and insights, serving the worldwide motion picture industry with trusted domestic, international, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202610001+199 contacts →

Exact match

“MAGNA is the media intelligence unit within IPG Mediabrands and the driving force behind advertising forecasts, understanding consumer behavior, marketplace insights, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWarsaw, PolandHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“We are an international research and technology company providing digital and cross-media audience measurement and advanced marketing solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 2026201-500173 contacts →

Exact match

“Screen Engine/ASI is a global market research and analytics firm passionate about what we do and hyper-focused on the success of our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200173 contacts →

Exact match

“EDO, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200151 contacts →

Exact match

“Adelaide is the leader in attention-based media quality measurement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchCourbevoie, FranceHQ recorded Nov 6, 2026201-50092 contacts →

Exact match

“Kantar Media est le leader reconnu des études et analyses médias, pour les données publicitaires de référence, le profilage et le ciblage des consommateurs avec TGI, et l’analyse…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCopenhagen, DenmarkHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“AudienceProject is a Danish-founded SaaS company empowering advertisers to make confident marketing decisions and reach their audience more effectively based on independent…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWestbury, NY, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“We’re a full-service marketing research agency with our core competencies in foundational strategy work, creative development and quantification, modeling and forecasting, through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchParis, FranceHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Happydemics is the measurement platform for real-time brand growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchRhinebeck, United StatesHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Phoenix Marketing International is now MarketCast!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKissimmee, FL, United StatesHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Audience Brand Consideration Sales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 287 ad effectiveness measurement firms worldwide

See the full list, filter by size, metro and specialty, and access 5,960 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ad effectiveness measurement firms worldwide at a glance

As of Nov 6, 2026
35.2%Verified-email coverage
59.0Average contacts per company
11-50Median size (employees)
8.7%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
111
11-50
108
51-200
31
201-500
13
501-1,000
9
1,001-5,000
8
5,001-10,000
2
10001+
3

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for ad effectiveness measurement firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “ad effectiveness measurement firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 5,960 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Ad effectiveness measurement firms by location

2 lists · largest first

Every Ad effectiveness measurement firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ad effectiveness measurement firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ad effectiveness measurement firms are there worldwide?

RevenueBase identified 287 company matches for ad effectiveness measurement firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kantar Ibope Media tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ad effectiveness measurement firms?

The United States leads with 92 companies. Every ad effectiveness measurement firms list by country and city is linked on this page.

Which city has the most ad effectiveness measurement firms?

New York leads with 25 company records, followed by London (12) and Paris (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,960 professional contacts with verified work emails tracked across these 287 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.