Speculation Duopoly with Agreement to Disagree: Can Overconfidence Survive the Market Test?

  • Author(s): ALBERT S. KYLE, F. ALBERT WANG
  • Published: Apr 18, 2012
  • Pages: 2073-2090
  • DOI: 10.1111/j.1540-6261.1997.tb02751.x

ABSTRACT

In a duopoly model of informed speculation, we show that overconfidence may strictly dominate rationality since an overconfident trader may not only generate higher expected profit and utility than his rational opponent, but also higher than if he were also rational. This occurs because overconfidence acts like a commitment device in a standard Cournot duopoly. As a result, for some parameter values the Nash equilibrium of a two‐fund game is a Prisoner's Dilemma in which both funds hire overconfident managers. Thus, overconfidence can persist and survive in the long run.

Jump to menu

Main Navigation

Search the Site / Journal

Search Keywords

Search Tips

Members' Login

Credentials

Members' Options

Site Footer

View Mobile Version