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Firms vs. Insiders as Traders of Last Resort

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Author Info
José M. Marín ()
Antoni Sureda-Gomila

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Abstract

We explore the role of corporate insiders vs. firms as traders of last resort. We develop a simple model of insider trading in which insiders provide price support, as well as liquidity, in security markets. Consistent with the model predictions we find that in the US markets insiders’ trading activities have a clear impact on return distributions. Furthermore, we provide empirical evidence on insiders transactions and firm transactions affecting returns in a different manner. In particular, while insiders’ transactions (both purchases and sales) have a strong impact on skewness in the short run and to a lesser extent in short run volatility, company repurchases only have a clear impact on volatility, both in the short and the long run. We provide explanations for this asymmetry.

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File URL: http://www.econ.upf.edu/docs/papers/downloads/999.pdf
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Publisher Info
Paper provided by Department of Economics and Business, Universitat Pompeu Fabra in its series Economics Working Papers with number 999.

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Date of creation: Nov 2006
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Handle: RePEc:upf:upfgen:999

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Web page: http://www.econ.upf.edu/

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Related research
Keywords: Insider trading; liquidity; short-horizon variance; autocorrelation; skewness;

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Find related papers by JEL classification:
G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
G12 - Financial Economics - - General Financial Markets - - - Asset Pricing
G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies
G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation

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  1. Newey, Whitney K & West, Kenneth D, 1987. "A Simple, Positive Semi-definite, Heteroskedasticity and Autocorrelation Consistent Covariance Matrix," Econometrica, Econometric Society, vol. 55(3), pages 703-08, May. [Downloadable!] (restricted)
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  2. Judd, Kenneth L., 1992. "Projection methods for solving aggregate growth models," Journal of Economic Theory, Elsevier, vol. 58(2), pages 410-452, December. [Downloadable!] (restricted)
    Other versions:
  3. José M. Marín & Jacques Olivier, 2006. "The Dog That Did Not Bark: Insider Trading and Crashes," Economics Working Papers 948, Department of Economics and Business, Universitat Pompeu Fabra. [Downloadable!]
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  4. Bernardo, Antonio E. & Judd, Kenneth L., 2000. "Asset market equilibrium with general tastes, returns, and informational asymmetries," Journal of Financial Markets, Elsevier, vol. 3(1), pages 17-43, February. [Downloadable!] (restricted)
  5. Chung, Kee H & Charoenwong, Charlie, 1998. "Insider Trading and the Bid-Ask Spread," The Financial Review, Eastern Finance Association, vol. 33(3), pages 1-20, August.
  6. Grossman, Sanford J & Stiglitz, Joseph E, 1980. "On the Impossibility of Informationally Efficient Markets," American Economic Review, American Economic Association, vol. 70(3), pages 393-408, June.
  7. Fama, Eugene F. & French, Kenneth R., 1997. "Industry costs of equity," Journal of Financial Economics, Elsevier, vol. 43(2), pages 153-193, February. [Downloadable!] (restricted)
  8. Lakonishok, Josef & Lee, Inmoo, 2001. "Are Insider Trades Informative?," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 14(1), pages 79-111.
  9. Brav, Alon & Graham, John R. & Harvey, Campbell R. & Michaely, Roni, 2005. "Payout policy in the 21st century," Journal of Financial Economics, Elsevier, vol. 77(3), pages 483-527, September. [Downloadable!] (restricted)
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  10. Fama, Eugene F. & French, Kenneth R., 2005. "Financing decisions: who issues stock?," Journal of Financial Economics, Elsevier, vol. 76(3), pages 549-582, June. [Downloadable!] (restricted)
  11. Graham, John R. & Harvey, Campbell R., 2001. "The theory and practice of corporate finance: evidence from the field," Journal of Financial Economics, Elsevier, vol. 60(2-3), pages 187-243, May. [Downloadable!] (restricted)
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