%T Assessing the Competitive Behaviour of Firms in the Single Market: A Micro-based Approach %I European Economy. Economic Papers %X This Report analyses and compares a number of indicators related to the evolution of the competitive behaviour of firms in the Single Market, from 1999 to 2007, in a selected number of both manufacturing and services industries and eight EU countries: Belgium, Germany, France, Italy, Poland, Romania, Spain and Sweden. A novelty of the approach is that the analysis is derived from firm-level observable data, which allow to grasp not only information on the average changes taking place in each industry and across countries, but also the distribution and sources of these changes in terms of individual firms' pricing behaviour and market shares, an information which is impossible to gather in detail from aggregate, traditional sector-level measures %A Carlo Altomonte %A Marcella Nicolini %A Armando Rungi %A Laura Ogliari %L eprints1864 %N 409 %K JEL classification: L11 %D 2010