Strategic behavior and price discovery
AbstractThe paper analyzes the effects of strategic behavior by an insider in a price discovery process, akin to an information tatonnement, in the presence of a competitive informed sector. Such processes are used in the preopening period of continuous trading systems in several exchanges. It is found that the insider manipulates the market using a contrarian strategy in order to neutralize the effect of the trades of competitive informed agents. Furthermore, consistently with the empirical evidence available, we find that information revelation accelerates close to the opening, that the market price does not converge to the fundamental value no matter how many rounds the tatonnement has, and that the expected trading volume displays a U-shaped pattern. We also find that a market with a larger competitive sector (smaller insider) has an improved informational efficiency and an increased trading volume. The insider provides a public good (a lower informativeness of the price) for the competitive informed sector.
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Bibliographic InfoPaper provided by Department of Economics and Business, Universitat Pompeu Fabra in its series Economics Working Papers with number 238.
Date of creation: Sep 1997
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Web page: http://www.econ.upf.edu/
Market manipulation; contrarian behavior; preopening auction; information atonnement; market microestructure; insider trading;
Other versions of this item:
- Medrano, Luis Angel & Vives, Xavier, 1997. "Strategic Behaviour and Price Discovery," CEPR Discussion Papers 1768, C.E.P.R. Discussion Papers.
- Luis Angel Medrano & Xavier Vives, 1998. "Strategic Behavior and Price Discovery," Harvard Institute of Economic Research Working Papers 1825, Harvard - Institute of Economic Research.
- D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
- G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
- G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
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