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Asset Prices Under Heterogenous Beliefs: Implications for the Equity Premium

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  • Andrew B. Abel

Abstract

An individual investor’s demands for risky capital and riskless bonds depend on the investor’s subjective beliefs about the payoff to risky capital. This paper determines equilibrium asset prices and returns in a capital market in which investors have heterogeneous subjective expectations of the payoff to capital. Increased heterogeneity increases the riskless rate of return and reduces the stock price. Heterogeneity can also dramatically increase the equilibrium equity premium on stocks relative to bonds. Therefore, calculating the equity premium under the assumption of homogeneous beliefs could dramatically understate the equity premium that would prevail under heterogeneity.

Suggested Citation

  • Andrew B. Abel, "undated". "Asset Prices Under Heterogenous Beliefs: Implications for the Equity Premium," Rodney L. White Center for Financial Research Working Papers 09-89, Wharton School Rodney L. White Center for Financial Research.
    • Handle: RePEc:fth:pennfi:09-89
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    Cited by:

    1. Mankiw, N. Gregory & Zeldes, Stephen P., 1991. "The consumption of stockholders and nonstockholders," Journal of Financial Economics, Elsevier, vol. 29(1), pages 97-112, March.
    2. repec:dau:papers:123456789/3495 is not listed on IDEAS
    3. He, Xue-Zhong & Treich, Nicolas, 2017. "Prediction market prices under risk aversion and heterogeneous beliefs," Journal of Mathematical Economics, Elsevier, vol. 70(C), pages 105-114.
    4. Xue-Zhong He & Lei Shi, 2008. "Heterogeneity, Bounded Rationality and Market Dysfunctionality," Research Paper Series 233, Quantitative Finance Research Centre, University of Technology, Sydney.
    5. Evan W. Anderson & Eric Ghysels & Jennifer L. Juergens, 2005. "Do Heterogeneous Beliefs Matter for Asset Pricing?," Review of Financial Studies, Society for Financial Studies, vol. 18(3), pages 875-924.
    6. He, Xue-Zhong & Treich, Nicolas, 2012. "Heterogeneous Beliefs and Prediction Market Accuracy," TSE Working Papers 13-394, Toulouse School of Economics (TSE).
    7. Giordani, Paolo & Soderlind, Paul, 2006. "Is there evidence of pessimism and doubt in subjective distributions? Implications for the equity premium puzzle," Journal of Economic Dynamics and Control, Elsevier, vol. 30(6), pages 1027-1043, June.
    8. Carl Chiarella & Roberto Dieci & Xue-Zhong He, 2006. "Aggregation of Heterogeneous Beliefs and Asset Pricing Theory: A Mean-Variance Analysis," Research Paper Series 186, Quantitative Finance Research Centre, University of Technology, Sydney.
    9. Elyes Jouini & Clotilde Napp, 2004. "Hétérogénéité des croyances, prix du risque et volatilité des marchés," Revue d'Économie Financière, Programme National Persée, vol. 74(1), pages 125-137.
    10. Carlin, Bruce I. & Longstaff, Francis A. & Matoba, Kyle, 2014. "Disagreement and asset prices," Journal of Financial Economics, Elsevier, vol. 114(2), pages 226-238.
    11. Hu, Yingyi & Zhao, Tiao & Zhang, Lin, 2020. "Noise trading, institutional trading, and opinion divergence: Evidence on intraday data in the Chinese stock market," International Review of Economics & Finance, Elsevier, vol. 68(C), pages 74-89.
    12. Selima Ben Mansour & Elyès Jouini & Jean-Michel Marin & Clotilde Napp & Christian Robert, 2008. "Are risk-averse agents more optimistic? A Bayesian estimation approach," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 23(6), pages 843-860.
    13. Jouini, Elyes & Napp, Clotilde, 2006. "Heterogeneous beliefs and asset pricing in discrete time: An analysis of pessimism and doubt," Journal of Economic Dynamics and Control, Elsevier, vol. 30(7), pages 1233-1260, July.
    14. Jouini, Elyès & Napp, Clotilde, 2015. "Gurus and belief manipulation," Economic Modelling, Elsevier, vol. 49(C), pages 11-18.
    15. Emilio Barucci & Marco Casna, 2014. "On the Market Selection Hypothesis in a Mean Reverting Environment," Computational Economics, Springer;Society for Computational Economics, vol. 44(1), pages 101-126, June.
    16. Adem Atmaz & Suleyman Basak, 2018. "Belief Dispersion in the Stock Market," Journal of Finance, American Finance Association, vol. 73(3), pages 1225-1279, June.
    17. repec:dau:papers:123456789/78 is not listed on IDEAS
    18. repec:dau:papers:123456789/2324 is not listed on IDEAS
    19. Carl Chiarella & Roberto Dieci & Tony He, 2006. "Aggregation of Heterogeneous Beliefs and Asset Pricing: A Mean-Variance Analysis," Computing in Economics and Finance 2006 108, Society for Computational Economics.
    20. Costas Xiouros, 2006. "Asset price volatilities and trading volumes in heterogeneous agent economies," Computing in Economics and Finance 2006 466, Society for Computational Economics.
    21. Basak, Suleyman, 2004. "Asset Prices with Heterogenous Beliefs," CEPR Discussion Papers 4256, C.E.P.R. Discussion Papers.

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