Market Power and Information Revelation in Dynamic Trading
We study a strategic model of dynamic trading where agents are asymmetrically informed over common value sources of uncertainty. There is a continuum of uninformed buyers and a finite number of sellers, some of them informed. When there is only one seller, full information revelation never occurs in equilibrium and the only information transmission happens in the first period. The outcome with n sellers depends both on the structure of sellers' information and the intensity of competition among them allowed by the market rules. We show that the latter plays an even more important role. With intense competition (absence of clienteles), information is fully and immediately revealed to the buyers in every equilibrium for n large enough, both when all sellers are informed and when only one seller is informed. On the other hand, with a less intense form of competition (presence of clienteles), collusive equilibria, where information is never revealed, also exist, whatever the number of sellers. Moreover, when only one seller is informed, for many parameter configurations there are no equilibria with full information revelation, for any n.
|Date of creation:||14 Mar 2002|
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- Shapley, Lloyd S & Shubik, Martin, 1977. "Trade Using One Commodity as a Means of Payment," Journal of Political Economy, University of Chicago Press, vol. 85(5), pages 937-68, October.
- Martin W. Cripps & Jeroen M. Swinkels, 2006.
"Efficiency of Large Double Auctions,"
Econometric Society, vol. 74(1), pages 47-92, 01.
- Xavier Vives, 1992.
"The Speed of Information Revelation in a Financial Market Mechanism,"
CEPR Financial Markets Paper
0016, European Science Foundation Network in Financial Markets, c/o C.E.P.R, 77 Bastwick Street, London EC1V 3PZ..
- Vives Xavier, 1995. "The Speed of Information Revelation in a Financial Market Mechanism," Journal of Economic Theory, Elsevier, vol. 67(1), pages 178-204, October.
- Vives, X., 1992. "The Speed of Information Revelation in a Financial Market Mechanism," UFAE and IAE Working Papers 174.92, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
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