Trading Volume and Transaction Costs in Specialist Markets
Thomas J. George
University of Houston - Department of Finance
Stephen M. Ross School of Business at the University of Michigan
University of Florida - Department of Finance, Insurance and Real Estate
Journal of Finance, Vol. 49, No. 4, pp. 1489-1505, September 1994
Prior work with competitive rational expectations equilibrium models indicates that there should be a positive relation between trading volume and differences in beliefs or information among traders. We show that this result is sensitive to whether and how transaction costs are modeled. In a specialist market with endogenous transaction costs we show that trading volume can be negatively related to the degree of informational asymmetry in the market. Our analysis highlights the dependence of volume on market structure, and our results suggest that the "volume effects" of corporate or macroeconomic events reflect a decrease, rather than an increase, in heterogeneity of beliefs or asymmetry of information.
Accepted Paper Series
Date posted: March 9, 2008
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