The importance of industry classification in estimating concentration ratios
AbstractWe compare different industry concentration ratios based on the Standard Industry Classification (SIC) system to ratios based on the Global Industry Classification Standard (GICS) system and demonstrate through the analysis of industry markups that GICS-based measures are better proxies for the actual industry concentration than SIC-based measures.
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Bibliographic InfoArticle provided by Elsevier in its journal Economics Letters.
Volume (Year): 114 (2012)
Issue (Month): 2 ()
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Web page: http://www.elsevier.com/locate/ecolet
Industry; Concentration; Markup; SIC; GICS;
Find related papers by JEL classification:
- D40 - Microeconomics - - Market Structure and Pricing - - - General
- C80 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - General
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