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Insider trading with different risk attitudes

Author

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  • Wassim Daher

    (Gulf University for Science and Technology)

  • Harun Aydilek

    (Gulf University for Science and Technology)

  • Elias G. Saleeby

Abstract

This paper examines the impact of different risk attitudes on the financial decisions of two insiders trading in the stock market. We consider a static version of the Kyle (Econometrica 53:1315–1335, 1985) model with two insiders. Insider 1 is risk neutral while insider 2 is risk averse with negative exponential utility. First, we analytically prove the existence of a unique linear equilibrium. Second, we carry out a comparative static analysis with respect to the duopoly case of risk-neutral insiders (Tighe in Three essays on insider trading. Unpublished Ph.D dissertation, University of Illinois at Champaign-Urbana, 1989) and with respect to the duopoly case of risk-averse insiders (Holden and Subrahmanyam in Econ Lett 44:181–190, 1994) models. Our findings reveal that the market depth and the information revelation are higher in Tighe (1989) than in our model. However, compared to Holden and Subrahmanyam (1994), we find that the market depth depends crucially on the degree of risk aversion. Finally, we show that regardless of the degree of risk aversion, the stock price reveals more information in our model than the stock price in Holden and Subrahmanyam (1994).

Suggested Citation

  • 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.
    • Handle: RePEc:kap:jeczfn:v:131:y:2020:i:2:d:10.1007_s00712-020-00703-x
    DOI: 10.1007/s00712-020-00703-x
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    3. Daher, Wassim & Mirman, Leonard J., 2007. "Market structure and insider trading," International Review of Economics & Finance, Elsevier, vol. 16(3), pages 306-331.
    4. 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.
    5. 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.
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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. 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.
    3. Jiang, Ying & Liu, Hong, 2022. "Insider trading, overconfidence, and private information flow," The North American Journal of Economics and Finance, Elsevier, vol. 60(C).

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    2. 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.
    3. 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

    Insider trading; Risk neutrality; Risk aversion; Exponential utility; Market structure; Kyle model;
    All these keywords.

    JEL classification:

    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G1 - Financial Economics - - General Financial Markets
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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