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Insider trading and firm-specific return volatility

Author

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  • Partha Gangopadhyay
  • Ken Yook
  • Yoon Shin

Abstract

Roll (J Financ 43:541–566, 1988 ) argues that firm-specific stock return volatility may result either from informed trading or from noise trading that is unrelated to information. In this paper we provide evidence that insider purchases are inversely related to the idiosyncratic volatility of stocks. We also find that stock idiosyncratic volatilities are generally inversely related to future 6- and 12-month returns. Our results are primarily driven by the timing of insider sales rather than insider purchases. The results are consistent with an information-based explanation of firm-specific return volatility. Copyright Springer Science+Business Media New York 2014

Suggested Citation

  • Partha Gangopadhyay & Ken Yook & Yoon Shin, 2014. "Insider trading and firm-specific return volatility," Review of Quantitative Finance and Accounting, Springer, vol. 43(1), pages 1-19, July.
  • Handle: RePEc:kap:rqfnac:v:43:y:2014:i:1:p:1-19
    DOI: 10.1007/s11156-013-0362-z
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    2. Dimitrios Koutmos & Konstantinos Bozos & Dionysia Dionysiou & Neophytos Lambertides, 2018. "The timing of new corporate debt issues and the risk-return tradeoff," Review of Quantitative Finance and Accounting, Springer, vol. 50(4), pages 943-978, May.
    3. Wan-Ni Lai & Yi-Ting Chen & Edward W. Sun, 2021. "Comonotonicity and low volatility effect," Annals of Operations Research, Springer, vol. 299(1), pages 1057-1099, April.
    4. Partha Gangopadhyay & Ken C. Yook & Joseph D. Haley, 2019. "Bank bailouts and corporate insider trading during the financial crisis of 2007–2009," Review of Quantitative Finance and Accounting, Springer, vol. 52(1), pages 35-83, January.
    5. Caporale, Guglielmo Maria & Kyriacou, Kyriacos & Spagnolo, Nicola, 2023. "Aggregate insider trading and stock market volatility in the UK," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 89(C).
    6. Jonathan A. Milian, 2016. "Insider sales based on short-term earnings information," Review of Quantitative Finance and Accounting, Springer, vol. 47(1), pages 109-128, July.
    7. Semih Tartaroglu & Michael Imhof, 2017. "Insider trading and response to earnings announcements: the impact of accelerated disclosure requirements," Review of Quantitative Finance and Accounting, Springer, vol. 49(2), pages 315-336, August.

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    More about this item

    Keywords

    Insider trading; Idiosyncratic volatility; Two-stage least squares regression; Contrarian trading; Private information; G00; G14; G30;
    All these keywords.

    JEL classification:

    • G00 - Financial Economics - - General - - - General
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G30 - Financial Economics - - Corporate Finance and Governance - - - General

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