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Asymmetric Information and the Excess Volatility of Stock Prices

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Author Info
Eden, Benjamin
Jovanovic, Boyan

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Abstract

Evidence suggests the volatility of stock prices cannot be accounted for by information about future dividends. The authors argue that some of the volatility of stock prices in excess of fundamentals results from fluctuations in the amount of public information over time. Their model assumes that dividends and consumption are constant in the aggregate but that there are good firms and bad firms whose identity may be unknown to the public, as in George Akerlof's (1970) 'lemons' problem. In that case, the collective valuation of the constant dividend stream depends on the degree of informational asymmetry. Copyright 1994 by Oxford University Press.

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Publisher Info
Article provided by Oxford University Press in its journal Economic Inquiry.

Volume (Year): 32 (1994)
Issue (Month): 2 (April)
Pages: 228-35
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Handle: RePEc:oup:ecinqu:v:32:y:1994:i:2:p:228-35

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  1. Matthew Spiegel, 1996. "Stock Price Volatility in a Multiple Security Overlapping Generations Model," Finance 9608002, EconWPA. [Downloadable!]
  2. S. Rao Aiyagari & Mark Gertler, 1998. ""Overreaction" of Asset Prices in General Equilibrium," NBER Working Papers 6747, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  3. John Y. Campbell & Martin Lettau, 1999. "Dispersion and Volatility in Stock Returns: An Empirical Investigation," NBER Working Papers 7144, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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