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Firms vs. insiders as traders of last resort

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  • José M. Marín
  • Antoni Sureda-Gomila

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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Bibliographic 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/

Related research

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

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  1. Whitney K. Newey & Kenneth D. West, 1986. "A Simple, Positive Semi-Definite, Heteroskedasticity and AutocorrelationConsistent Covariance Matrix," NBER Technical Working Papers 0055, National Bureau of Economic Research, Inc.
  2. 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.
  3. 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.
  4. Fama, Eugene F. & French, Kenneth R., 2005. "Financing decisions: who issues stock?," Journal of Financial Economics, Elsevier, vol. 76(3), pages 549-582, June.
  5. Lakonishok, Josef & Lee, Inmoo, 2001. "Are Insider Trades Informative?," Review of Financial Studies, Society for Financial Studies, vol. 14(1), pages 79-111.
  6. 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.
  7. Sanford J Grossman & Joseph E Stiglitz, 1997. "On the Impossibility of Informationally Efficient Markets," Levine's Working Paper Archive 1908, David K. Levine.
  8. Judd, Kenneth L., 1992. "Projection methods for solving aggregate growth models," Journal of Economic Theory, Elsevier, vol. 58(2), pages 410-452, December.
  9. Alon Brav & John R. Graham & Campbell R. Harvey & Roni Michaely, 2003. "Payout Policy in the 21st Century," NBER Working Papers 9657, National Bureau of Economic Research, Inc.
  10. Fama, Eugene F. & French, Kenneth R., 1997. "Industry costs of equity," Journal of Financial Economics, Elsevier, vol. 43(2), pages 153-193, February.
  11. 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.
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