The Structure of Equilibrium in an Asset Market with Variable Supply

Manfred Nermuth

Vienna Economics Papers from University of Vienna, Department of Economics

Abstract: We characterize the structure of Nash equilibria in asset market games with variable asset supply. In equilibrium, different assets have different returns, and (risk neutral) investors with different wealth hold portfolios with different structures. In equilibrium, an asset's return is inversely related to the elasticity of its supply. The larger an investor, the more diversified is his portfolio. Smaller investors do not hold all the assets, but achieve higher percentage returns. More generally, our results can be applied also to other "multi-market games" in which several players compete in several arenas simultaneously, like multi-market Cournot oligopolies, or multiple rent-seeking games.

JEL-codes: C72 D43 G12 (search for similar items in EconPapers)
Date: 2008-06
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