Disagreement in a Multi-Asset Market

Publication Type:
Journal Article
International Review of Finance, 2012, 12 (3), pp. 357 - 373
Issue Date:
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This paper provides a simple framework to study the effect of disagreement in a multi-asset market equilibrium by considering two agents who disagree about expected returns, variances, and correlation of returns of two risky assets. When agents' subjective beliefs are characterized by mean preserving spreads of a benchmark homogeneous belief, we show that the effect of the disagreement does not cancel out in general and the effect in a multi-asset market can be very different from a single asset market. In particular, the market risk premium can increase and the risk-free rate can decrease significantly even when the market is overoptimistic and overconfident. © International Review of Finance Ltd. 2012.
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