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Cournot duopoly and insider trading with two insiders

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  • Wassim Daher

    (CERMSEM - CEntre de Recherche en Mathématiques, Statistique et Économie Mathématique - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

  • Leonard J Mirman

    (University of Virginia)

Abstract

In this paper, we study a version of the static Jain-Mirman (2002) model in which competition in the real sector is introduced. In this paper, we add competition in the stock sector to the Jain-Mirman(2002) paper. We show that the linear equilibrium structure is affected by this competition in the financial sector. Specifically, we show that the stock price set by the market maker reveals more information and that the behavior of the profits of the manager depends on the parameters of the model. Moreover, we prove that the level of output produced by the manager is less than in Jain-Mirman (2002). Finally, we also study the case in which the market maker receives only one signal and analyze the comparative statics of this model when the market maker receives either one or two signals.

Suggested Citation

  • Wassim Daher & Leonard J Mirman, 2004. "Cournot duopoly and insider trading with two insiders," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-03331519, HAL.
    • Handle: RePEc:hal:cesptp:halshs-03331519
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-03331519
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    References listed on IDEAS

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    1. Jean-Charles Rochet & Jean-Luc Vila, 1994. "Insider Trading without Normality," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 61(1), pages 131-152.
    2. Daher, Wassim & Mirman, Leonard J., 2007. "Market structure and insider trading," International Review of Economics & Finance, Elsevier, vol. 16(3), pages 306-331.
    3. Ausubel, Lawrence M, 1990. "Insider Trading in a Rational Expectations Economy," American Economic Review, American Economic Association, vol. 80(5), pages 1022-1041, December.
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    5. James Dow, 2003. "Informed Trading, Investment, and Welfare," The Journal of Business, University of Chicago Press, vol. 76(3), pages 439-454, July.
    6. Foster, F Douglas & Viswanathan, S, 1993. "The Effect of Public Information and Competition on Trading Volume and Price Volatility," The Review of Financial Studies, Society for Financial Studies, vol. 6(1), pages 23-56.
    7. Creane, Anthony, 1994. "Experimentation with Heteroskedastic Noise," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 4(2), pages 275-286, March.
    8. Leonard J. Mirman & Neelam Jain, 2000. "Real and financial effects of insider trading with correlated signals," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 16(2), pages 333-353.
    9. Jain, Neelam & Mirman, Leonard J., 1999. "Insider trading with correlated signals," Economics Letters, Elsevier, vol. 65(1), pages 105-113, October.
    10. Jain, Neelam & Mirman, Leonard J., 2002. "Effects of insider trading under different market structures," The Quarterly Review of Economics and Finance, Elsevier, vol. 42(1), pages 19-39.
    11. Holden, Craig W & Subrahmanyam, Avanidhar, 1992. "Long-Lived Private Information and Imperfect Competition," Journal of Finance, American Finance Association, vol. 47(1), pages 247-270, March.
    12. Baiman, Stanley & Verrecchia, Robert E., 1995. "Earnings and price-based compensation contracts in the presence of discretionary trading and incomplete contracting," Journal of Accounting and Economics, Elsevier, vol. 20(1), pages 93-121, July.
    13. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-1335, November.
    14. Michael Manove, 1989. "The Harm from Insider Trading and Informed Speculation," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 104(4), pages 823-845.
    15. Holmstrom, Bengt & Tirole, Jean, 1993. "Market Liquidity and Performance Monitoring," Journal of Political Economy, University of Chicago Press, vol. 101(4), pages 678-709, August.
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    Cited by:

    1. Daher, Wassim & Karam, Fida & Ahmed, Naveed, 2023. "Insider Trading with Semi-Informed Traders and Information Sharing: The Stackelberg Game," MPRA Paper 118138, University Library of Munich, Germany.
    2. Wang, Leonard F.S. & Wang, Ya-Chin & Ren, Shuang, 2009. "Stackelberg financial-leader in insider trading model," International Review of Economics & Finance, Elsevier, vol. 18(1), pages 123-131, January.
    3. Wassim Daher & Harun Aydilek & Fida Karam & Asiye Aydilek, 2014. "Insider trading with product differentiation," Journal of Economics, Springer, vol. 111(2), pages 173-201, March.
    4. Park, Young S. & Lee, Jaehyun, 2010. "Detecting insider trading: The theory and validation in Korea Exchange," Journal of Banking & Finance, Elsevier, vol. 34(9), pages 2110-2120, September.
    5. Daher, Wassim & Karam, Fida & Mirman, Leonard J., 2012. "Insider trading with different market structures," International Review of Economics & Finance, Elsevier, vol. 24(C), pages 143-154.
    6. Wassim Daher & Harun Aydilek & Elias G. Saleeby, 2020. "Insider trading with different risk attitudes," Journal of Economics, Springer, vol. 131(2), pages 123-147, October.
    7. Karam, Fida & Daher, Wassim, 2013. "Insider trading in a two-tier real market structure model," The Quarterly Review of Economics and Finance, Elsevier, vol. 53(1), pages 44-52.
    8. Leonard F.S. Wang & Ya‐Chin Wang, 2010. "Stackelberg real‐leader in an insider trading model," Studies in Economics and Finance, Emerald Group Publishing Limited, vol. 27(1), pages 30-46, March.
    9. Wassim Daher & Fida Karam & Naveed Ahmed, 2023. "Insider Trading with Semi-Informed Traders and Information Sharing: The Stackelberg Game," Mathematics, MDPI, vol. 11(22), pages 1-16, November.
    10. Karam, Fida & Daher, Wassim, 2013. "Insider trading in a two-tier real market structure model," The Quarterly Review of Economics and Finance, Elsevier, vol. 53(1), pages 44-52.

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    More about this item

    Keywords

    Kyle model; Correlated signals; Stock prices; Insider Trading; prix du stock; agent informé; signaux corrélés; modèle de Kyle;
    All these keywords.

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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