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Product Market Competition, Insider Trading, and Stock Market Efficiency

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  • JOEL PERESS

Abstract

How does competition in firms' product markets influence their behavior in equity markets? Do product market imperfections spread to equity markets? We examine these questions in a noisy rational expectations model in which firms operate under monopolistic competition while their shares trade in perfectly competitive markets. Firms use their monopoly power to pass on shocks to customers, thereby insulating their profits. This encourages stock trading, expedites the capitalization of private information into stock prices and improves the allocation of capital. Several implications are derived and tested. Copyright (c) 2009 the American Finance Association.

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Bibliographic Info

Article provided by American Finance Association in its journal The Journal of Finance.

Volume (Year): 65 (2010)
Issue (Month): 1 (02)
Pages: 1-43

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Handle: RePEc:bla:jfinan:v:65:y:2010:i:1:p:1-43

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Cited by:
  1. Kale, Jayant R. & Loon, Yee Cheng, 2011. "Product market power and stock market liquidity," Journal of Financial Markets, Elsevier, vol. 14(2), pages 376-410, May.
  2. Pontuch, Peter, 2011. "Product Market Concentration, Financing Constraints, and Firms' Business Cycle Sensitivity," Economics Papers from University Paris Dauphine 123456789/6271, Paris Dauphine University.
  3. Ahern, Kenneth R., 2012. "Bargaining power and industry dependence in mergers," Journal of Financial Economics, Elsevier, vol. 103(3), pages 530-550.
  4. Vivek Sharma, 2011. "Stock returns and product market competition: beyond industry concentration," Review of Quantitative Finance and Accounting, Springer, vol. 37(3), pages 283-299, October.
  5. Foucault, Thierry & Fresard, Laurent, 2014. "Learning from peers' stock prices and corporate investment," Journal of Financial Economics, Elsevier, vol. 111(3), pages 554-577.
  6. Peress, Joël, 2011. "Learning From Stock Prices and Economic Growth," CEPR Discussion Papers 8569, C.E.P.R. Discussion Papers.
  7. Valta, Philip, 2012. "Competition and the cost of debt," Journal of Financial Economics, Elsevier, vol. 105(3), pages 661-682.
  8. David R. Gallagher & Katja Ignatieva & James McCulloch, 2013. "Industry Concentration, Excess Returns and Innovation in Australia," Research Paper Series 334, Quantitative Finance Research Centre, University of Technology, Sydney.
  9. Datta, Sudip & Iskandar-Datta, Mai & Singh, Vivek, 2013. "Product market power, industry structure, and corporate earnings management," Journal of Banking & Finance, Elsevier, vol. 37(8), pages 3273-3285.
  10. Santanu Mitra & Mahmud Hossain & Pankaj Jain, 2013. "Product market power and management’s action to avoid earnings disappointment," Review of Quantitative Finance and Accounting, Springer, vol. 41(4), pages 585-610, November.
  11. Datta, Sudip & Iskandar-Datta, Mai & Sharma, Vivek, 2011. "Product market pricing power, industry concentration and analysts' earnings forecasts," Journal of Banking & Finance, Elsevier, vol. 35(6), pages 1352-1366, June.
  12. Bazdresch, Santiago, 2011. "Product differentiation and systematic risk: theory and empirical evidence," MPRA Paper 35504, University Library of Munich, Germany, revised 01 Nov 2011.

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