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Investors' Heterogeneity, Prices, and Volume around the Ex-Dividend Day

Published online by Cambridge University Press:  06 April 2009

Roni Michaely
Affiliation:
Johnson School of Management, Cornell University, Ithaca, NY 14853
Jean-Luc Vila
Affiliation:
Sloan School of Management, Massachusetts Institute of Technology, Cambridge, MA 02139

Abstract

This paper analyzes the relationship between tax heterogeneity and the behavior of stock prices and trading volume around the ex-dividend day within an equilibrium framework. We conclude that, even in a world without transaction costs, the price drop on the ex-day need not be equal to the dividend amount. Our model accounts for the higher market trading volume around the ex-day, and shows this to be a function of tax heterogeneity among traders. We show that the volume of trade around the ex-day contains information about investors' tax preferences above and beyond the information contained in the ex-day price alone. Consistent with the model's predictions, our empirical analysis reveals that as the risk associated with the ex-dividend day increases, or tax heterogeneity decreases, trading volume decreases.

Type
Research Article
Copyright
Copyright © School of Business Administration, University of Washington 1995

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