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Insider Trading with Semi-Informed Traders and Information Sharing: The Stackelberg Game

Author

Listed:
  • Wassim Daher

    (Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
    Center of Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
    These authors contributed equally to this work.)

  • Fida Karam

    (Department of Economics and Finance, Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
    These authors contributed equally to this work.)

  • Naveed Ahmed

    (Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
    Center of Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
    These authors contributed equally to this work.)

Abstract

This paper presents a financial Stackelberg game model with two partially informed risk neutral insiders. Each insider receives a private signal about the stock value and competes with the other insider under a Stackelberg setting. Linear strategies for the game’s participants are considered and normal distributions for the fundamentals are assumed. Based on the Stackelberg game and the Backward Induction theory, the unique linear equilibrium is characterized. The findings reveal that the level of partial information might increase/decrease the insiders’ profits as well as the market parameter in the Stackelberg setting relative to the Cournot setting. Additionally, this paper considers the information sharing scenario between the two insiders competing in this Stackelberg game. The results show that multiple equilibria exist in contrast to the information sharing scenario in the Cournot game where the Nash equilibrium is unique.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jmathe:v:11:y:2023:i:22:p:4580-:d:1276388
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    References listed on IDEAS

    as
    1. 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.
    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. 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.
    4. 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.
    5. Carré, Sylvain & Collin-Dufresne, Pierre & Gabriel, Franck, 2022. "Insider trading with penalties," Journal of Economic Theory, Elsevier, vol. 203(C).
    6. Nakamura, Tomoya, 2015. "One-leader and multiple-follower Stackelberg games with private information," Economics Letters, Elsevier, vol. 127(C), pages 27-30.
    7. Daher, Wassim & Mirman, Leonard J., 2006. "Cournot duopoly and insider trading with two insiders," The Quarterly Review of Economics and Finance, Elsevier, vol. 46(4), pages 530-551, September.
    8. Zhang, Wei David, 2004. "Risk aversion, public disclosure, and long-lived information," Economics Letters, Elsevier, vol. 85(3), pages 327-334, December.
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    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.
    11. Daher, Wassim & Saleeby, Elias G., 2023. "Existence of Linear Equilibria in The Kyle Model with Partial Correlation and Two Risk Neutral Traders," MPRA Paper 117813, University Library of Munich, Germany.
    12. 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.
    13. Nicolas S. Lambert & Michael Ostrovsky & Mikhail Panov, 2018. "Strategic Trading in Informationally Complex Environments," Econometrica, Econometric Society, vol. 86(4), pages 1119-1157, July.
    14. 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.
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