The importance of industry classification in estimating concentration ratios
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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- 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.
- Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, December.
- Philippe Aghion & Nick Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2005.
"Competition and Innovation: an Inverted-U Relationship,"
The Quarterly Journal of Economics,
Oxford University Press, vol. 120(2), pages 701-728.
- 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.
- Howitt, Peter & Griffith, Rachel & Aghion, Philippe & Blundell, Richard & Bloom, Nick, 2005. "Competition and Innovation: An Inverted-U Relationship," Scholarly Articles 4481507, Harvard University Department of Economics.
- Philippe Aghion & Nicolas Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2002. "Competition and innovation: an inverted U relationship," IFS Working Papers W02/04, Institute for Fiscal Studies.
- 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.
- Kathleen M. Kahle & Ralph A. Walkling, "undated". "The Impact of Industry Classifications on Financial Research," Research in Financial Economics 9607, Ohio State University.
- 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.
- 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.
- 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.
- 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.
- Hennessy, David A. & Lapan, Harvey, 2007. "When different market concentration indices agree," Economics Letters, Elsevier, vol. 95(2), pages 234-240, May.