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Informed Trading, Investment, and Welfare

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Author Info
Dow, J
Rahi, R

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Abstract

This paper studies the welfare economics of informed trading in a stock market. We model the effect of more informative prices on investment, given that this dependence will itself be reflected in equilibrium prices. We show that in rational expectations equilibrium with price-taking competitive behaviour, and in the presence of risk-neutral uninformed agents, uninformed traders cannot lose money on average to informed traders.

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Publisher Info
Paper provided by European University Institute in its series Economics Working Papers with number eco97/03.

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Length: 22 pages
Date of creation: 1997
Date of revision:
Handle: RePEc:eui:euiwps:eco97/03

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Related research
Keywords: FINANCIAL MARKET ; INFORMATION ; GOVERNMENT POLICY ; REGULATION ; WELFARE ECONOMICS;

Other versions of this item:

Find related papers by JEL classification:
G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies
G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation
D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information
D60 - Microeconomics - - Welfare Economics - - - General

Cited by:
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  1. James Dow & Itay Goldstein & Alexander Guembel, 2005. "Commitment to Overinvest and Price Informativeness," OFRC Working Papers Series 2005fe18, Oxford Financial Research Centre. [Downloadable!]
  2. Wassim Daher & Leonard J. Mirman, 2004. "Market structure and insider trading," Cahiers de la Maison des Sciences Economiques b04025, Université Panthéon-Sorbonne (Paris 1). [Downloadable!]
    Other versions:
  3. Alexander Gümbel, 2000. "Myopic Traders, Efficiency and Taxation," OFRC Working Papers Series 2000fe05, Oxford Financial Research Centre. [Downloadable!]
  4. Itay Goldstein & Alexander Gümbel, 2002. "Manipulation, the allocational role of prices and production externalities," OFRC Working Papers Series 2002fe02, Oxford Financial Research Centre. [Downloadable!]
  5. Giovanni Cespa, 2003. "A Comparison of Stock Market Mechanisms," CSEF Working Papers 94, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy. [Downloadable!]
    Other versions:
  6. Foucault, Thierry & Cespa, Giovanni, 2008. "Insiders-outsiders, transparency and the value of the ticker," Les Cahiers de Recherche 892, HEC Paris. [Downloadable!]
    Other versions:
  7. James Dow & Gary Gorton, 2006. "Noise Traders," NBER Working Papers 12256, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  8. Sciubba, E., 1999. "Asymmetric Information and Survival in Financial Markets," Cambridge Working Papers in Economics 9908, Faculty of Economics, University of Cambridge. [Downloadable!]
    Other versions:
  9. Alexander Gümbel, 2005. "Should short-term speculators be taxed, or subsidised?," Annals of Finance, Springer, vol. 1(3), pages 327-348, 08. [Downloadable!] (restricted)
  10. José M. Marín & Rohit Rahi, 1997. "Speculative Securities," Economics Working Papers 223, Department of Economics and Business, Universitat Pompeu Fabra. [Downloadable!]
    Other versions:
  11. Juan Dubra & Helios Herrera, 2002. "Market Participation, Information and Volatility," Working Papers 0206, Centro de Investigacion Economica, ITAM. [Downloadable!]
  12. Andrea Buffa & Giovanna Nicodano, 2006. "Should Insider Trading be Prohibited when Share Repurchases are Allowed?," Carlo Alberto Notebooks 16, Collegio Carlo Alberto. [Downloadable!]
    Other versions:
  13. Perotti, Enrico C & Rossetto, Silvia, 2007. "Unlocking Value: Equity Carve outs as Strategic Real Options," CEPR Discussion Papers 6268, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    Other versions:
  14. Wassim Daher & Leonard J. Mirman, 2004. "Cournot duopoly and insider trading with two insiders," Cahiers de la Maison des Sciences Economiques b04077, Université Panthéon-Sorbonne (Paris 1). [Downloadable!]
    Other versions:
  15. Gao, Pingyang, 2008. "Disclosure Quality, Cost of Capital, and Investors’ Welfare," MPRA Paper 9478, University Library of Munich, Germany, revised Jun 2008. [Downloadable!]
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