Top Global Market Research Firms Revenue. 2012 to 2015

In the last period, 2015, the largest presented player is Thomson Reuters with Total Revenue of 12.2B. The fastest growing participant in our report is Comscore with 44.53% growth in Total Revenue over 4 years between 2012 to 2015. The topic that suffers from the biggest downturn is Thomson Reuters with 7.03% decline over the same period. This report represents data points consolidated from 6 sources: Forrester, Nielsen, Reuters, Comscore, IHS and Gartner