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Firms vs. insiders as traders of last resort

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Author Info
José M. Marín () (IE Business School and IMDEA)
Antoni Sureda-Gomila () (Universitat Pompeu Fabra)

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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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Publisher Info
Paper provided by Instituto Madrileño de Estudios Avanzados (IMDEA) Ciencias Sociales in its series Working Papers with number 2007-21.

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Date of creation: 28 Oct 2007
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Handle: RePEc:imd:wpaper:wp2007-21

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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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  2. 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)
  3. 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.
  4. 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.
  5. 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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  6. 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)
  7. 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)
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  8. 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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  9. 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)
  10. 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.
  11. 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)
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