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Insider Trading, Regulation, And The Components Of The Bid–Ask Spread

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  • Bart Frijns
  • Aaron Gilbert
  • Alireza Tourani‐Rad

Abstract

In this article we investigate the relation between insider trading regulations and the bid–ask spread. We decompose the spread into its components before and after the enactment of strict new insider trading rules in New Zealand. We find that the enactment led to a significant decrease in the information asymmetry component of the spread, which is observed mainly in illiquid and high prechange information asymmetry companies. These findings are robust to model specification. In addition, we find a decrease in the contribution of information asymmetry to price volatility.

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  • Bart Frijns & Aaron Gilbert & Alireza Tourani‐Rad, 2008. "Insider Trading, Regulation, And The Components Of The Bid–Ask Spread," Journal of Financial Research, Southern Finance Association;Southwestern Finance Association, vol. 31(3), pages 225-246, September.
    • Handle: RePEc:bla:jfnres:v:31:y:2008:i:3:p:225-246
    DOI: 10.1111/j.1475-6803.2008.00238.x
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    Cited by:

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    2. Gilbert, Aaron & Frijns, Bart & Tourani, Alireza-Rad, 2007. "Elements of Effective Insider Trading Laws," Working Paper Series 3973, Victoria University of Wellington, The New Zealand Institute for the Study of Competition and Regulation.
    3. Mizrach, Bruce & Otsubo, Yoichi, 2014. "The market microstructure of the European climate exchange," Journal of Banking & Finance, Elsevier, vol. 39(C), pages 107-116.
    4. Ma, Rui & Anderson, Hamish D. & Marshall, Ben R., 2018. "Stock market liquidity and trading activity: Is China different?," International Review of Financial Analysis, Elsevier, vol. 56(C), pages 32-51.
    5. Tianlun Fei & Xiaoquan Liu & Conghua Wen, 2023. "Forecasting stock return volatility: Realized volatility‐type or duration‐based estimators," Journal of Forecasting, John Wiley & Sons, Ltd., vol. 42(7), pages 1594-1621, November.
    6. Mai, Nhat Chi, 2020. "Essays on the Vietnam Stock Market," OSF Preprints 3uaqt, Center for Open Science.
    7. Truong, Cameron, 2010. "Post earnings announcement drift and the roles of drift-enhanced factors in New Zealand," Pacific-Basin Finance Journal, Elsevier, vol. 18(2), pages 139-157, April.
    8. Tiago Loncan & Styliani Panetsidou & Angelos Synapis, 2024. "Leverage, investment and institutional environments: Evidence from emerging markets," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 29(1), pages 849-866, January.
    9. Chen, Rong & Geng, Heng (Griffin) & Lin, Hai & Nguyen, Phuong Thi Ly, 2021. "Liquidity, informed trading, and a market surveillance system: Evidence from the Vietnamese stock market," Pacific-Basin Finance Journal, Elsevier, vol. 67(C).
    10. Mehdi Moradzadehfard, 2013. "Evaluation of Management Earnings Forecast Error and Information Content of Accruals: Listed Companies in Tehran Stock Exchange," Journal of Education and Vocational Research, AMH International, vol. 4(4), pages 119-129.
    11. Tsionas, Mike G. & Merikas, Andreas G. & Merika, Anna A., 2012. "Concentrated ownership and corporate performance revisited: The case of shipping," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 48(4), pages 843-852.
    12. Madura, Jeff & Marciniak, Marek, 2014. "Bidder country characteristics and informed trading in U.S. targets," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 29(C), pages 256-284.
    13. Merl, Robert & Palan, Stefan & Schmidt, Dominik & Stöckl, Thomas, 2023. "Insider trading regulation and trader migration," Journal of Financial Markets, Elsevier, vol. 66(C).
    14. Haung, Meng & Marsden, Alastair & Poskitt, Russell, 2006. "The Impact of Disclosure Reform on the NZX's Financial Information Environment," Working Paper Series 3835, Victoria University of Wellington, The New Zealand Institute for the Study of Competition and Regulation.
    15. Millicent Chang & Xiaolin Qian & Jing Yu & Yvonne See, 2017. "Does director trading change the information environment?," Australian Journal of Management, Australian School of Business, vol. 42(2), pages 205-229, May.
    16. Neupane, Biwesh & Thapa, Chandra & Marshall, Andrew & Neupane, Suman, 2021. "Mimicking insider trades," Journal of Corporate Finance, Elsevier, vol. 68(C).

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