We model stock price manipulation when the manipulator is in the role of an intermediary (broker). We find that in the absence of superior information, the broker can manipulate equilibrium outcomes without losing credibility with respect to accurate forecasting. This result extends to the case when the broker prefers more investment to come into the market. However, when competition among brokers is introduced then the investors get their favorite outcome in the absence of superior information. This result has important implications for encouraging broker competitions in developing markets. Many developing markets are still not demutualized; hence broker level competition is limited in such markets.
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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number
6374.
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Robert J. Aumann & Sergiu Hart, 2003.
"Long Cheap Talk,"
Econometrica,
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[Downloadable!] (restricted)
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Robert J. Aumann & Sergiu Hart, 2002.
"Long Cheap Talk,"
Discussion Paper Series
dp284, Center for Rationality and Interactive Decision Theory, Hebrew University, Jerusalem, revised Nov 2002.
[Downloadable!]
Farrell, Joseph & Gibbons, Robert, 1989.
"Cheap Talk with Two Audiences,"
American Economic Review,
American Economic Association, vol. 79(5), pages 1214-23, December.
[Downloadable!] (restricted)
Other versions:
Allen, Franklin & Gale, Douglas, 1992.
"Stock-Price Manipulation,"
Review of Financial Studies,
Oxford University Press for Society for Financial Studies, vol. 5(3), pages 503-29.
[Downloadable!] (restricted)
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