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The importance of industry classification in estimating concentration ratios

  • Hrazdil, Karel
  • Zhang, Ray
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    We 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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    File URL: http://www.sciencedirect.com/science/article/pii/S016517651100379X
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    Article provided by Elsevier in its journal Economics Letters.

    Volume (Year): 114 (2012)
    Issue (Month): 2 ()
    Pages: 224-227

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    Handle: RePEc:eee:ecolet:v:114:y:2012:i:2:p:224-227
    Contact details of provider: Web page: http://www.elsevier.com/locate/ecolet

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    1. Philippe Aghion & Nicholas Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2002. "Competition and Innovation: An Inverted U Relationship," NBER Working Papers 9269, National Bureau of Economic Research, Inc.
    2. Sanjeev Bhojraj & Charles M. C. Lee & Derek K. Oler, 2003. "What's My Line? A Comparison of Industry Classification Schemes for Capital Market Research," Journal of Accounting Research, Wiley Blackwell, vol. 41(5), pages 745-774, December.
    3. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, June.
    4. DeFond, Mark L. & Park, Chul W., 1999. "The effect of competition on CEO turnover1," Journal of Accounting and Economics, Elsevier, vol. 27(1), pages 35-56, February.
    5. Hennessy, David A. & Lapan, Harvey, 2007. "When different market concentration indices agree," Economics Letters, Elsevier, vol. 95(2), pages 234-240, May.
    6. Kahle, Kathleen M. & Walkling, Ralph A., 1996. "The Impact of Industry Classifications on Financial Research," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 31(03), pages 309-335, September.
    7. Ashiq Ali & Sandy Klasa & Eric Yeung, 2009. "The Limitations of Industry Concentration Measures Constructed with Compustat Data: Implications for Finance Research," Review of Financial Studies, Society for Financial Studies, vol. 22(10), pages 3839-3871, October.
    8. Kathleen M. Kahle & Ralph A. Walkling, . "The Impact of Industry Classifications on Financial Research," Research in Financial Economics 9607, Ohio State University.
    9. Heather E. Tookes, 2008. "Information, Trading, and Product Market Interactions: Cross-sectional Implications of Informed Trading," Journal of Finance, American Finance Association, vol. 63(1), pages 379-413, 02.
    10. Kewei Hou & David T. Robinson, 2006. "Industry Concentration and Average Stock Returns," Journal of Finance, American Finance Association, vol. 61(4), pages 1927-1956, 08.
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