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Do Insider Trading Laws Work?

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  • Arturo Bris
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    Abstract

    By calculating an estimated measure of undetected insider trading, this paper shows that profits made by informed corporate insiders prior to tender offer announcements increase after the first enforcement of insider trading laws. I analyze the effects of Insider Trading regulation on a sample of 5,099 acquisitions in 56 different countries, and estimate the profits due to insider trading from the abnormal volume in the weeks prior to the announcement, under the assumption that insiders purchase those shares at the prevailing price and hold them until the public announcement. I find that laws that prosecute insider trading fail to eliminate profits made by insiders, and make acquisitions more expensive. Therefore, by increasing the market reaction to an acquisition, insider trading laws make it profitable to violate them.

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    File URL: http://icfpub.som.yale.edu/publications/2623
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    Bibliographic Info

    Paper provided by Yale School of Management in its series Yale School of Management Working Papers with number ysm162.

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    Date of creation: 01 Nov 2000
    Date of revision: 01 Jun 2005
    Handle: RePEc:ysm:somwrk:ysm162

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    Web page: http://icf.som.yale.edu/
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    Related research

    Keywords: Insider trading; takeovers; market regulation;

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    Cited by:
    1. Brenner, Steffen, 2011. "On the irrelevance of insider trading for managerial compensation," European Economic Review, Elsevier, vol. 55(2), pages 293-303, February.
    2. Wielhouwer, Jacco L., 2013. "When is public enforcement of insider trading regulations effective?," International Review of Law and Economics, Elsevier, vol. 34(C), pages 52-60.
    3. David Howden, 2014. "Knowledge flows and insider trading," The Review of Austrian Economics, Springer, vol. 27(1), pages 45-55, March.
    4. Fernandes, Nuno & Ferreira, Miguel A., 2008. "Does international cross-listing improve the information environment," Journal of Financial Economics, Elsevier, vol. 88(2), pages 216-244, May.
    5. Keser, Claudia & Markstädter, Andreas, 2014. "Informational asymmetries in laboratory asset markets with state-dependent fundamentals," Center for European, Governance and Economic Development Research Discussion Papers 207, University of Goettingen, Department of Economics.
    6. André Betzer & Erik Theissen, 2009. "Insider Trading and Corporate Governance: The Case of Germany," European Financial Management, European Financial Management Association, vol. 15(2), pages 402-429.
    7. 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.
    8. Aitken, Michael & Cumming, Douglas & Zhan, Feng, 2013. "Exchange trading rules, surveillance and insider trading," CFS Working Paper Series 2013/15, Center for Financial Studies (CFS).
    9. Nadia Linciano, 2003. "The Effectiveness of Insider Trading Regulation in Italy. Evidence from Stock-Price Run-Ups Around Announcements of Corporate Control Transactions," European Journal of Law and Economics, Springer, vol. 16(2), pages 199-218, September.
    10. Tong, Wilson H.S. & Zhang, Shaojun & Zhu, Yanjian, 2013. "Trading on inside information: Evidence from the share-structure reform in China," Journal of Banking & Finance, Elsevier, vol. 37(5), pages 1422-1436.

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