AbstractWe provide a model for why high beta assets are more prone to speculative overpricing than low beta ones. When investors disagree about the common factor of cash-flows, high beta assets are more sensitive to this macro-disagreement and experience a greater divergence-of-opinion about their payoffs. Short-sales constraints for some investors such as retail mutual funds result in high beta assets being over-priced. When aggregate disagreement is low, expected return increases with beta due to risk-sharing. But when it is large, expected return initially increases but then decreases with beta. High beta assets have greater shorting from unconstrained arbitrageurs and more share turnover. Using measures of disagreement about stock earnings and economic uncertainty, we verify these predictions. A calibration exercise yields reasonable parameter values.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 18548.
Date of creation: Nov 2012
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Find related papers by JEL classification:
- G02 - Financial Economics - - General - - - Behavioral Finance: Underlying Principles
- G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
- G12 - Financial Economics - - General Financial Markets - - - Asset Pricing
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-12-06 (All new papers)
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- LuÃs BrandÃ£o Marques & Gaston Gelos & Natalia Melgar, 2013. "Country Transparency and the Global Transmission of Financial Shocks," IMF Working Papers 13/156, International Monetary Fund.
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