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Equilibrium Asset Pricing and Portofolio Choice Under Asymmetric Information


  • Biais, Bruno
  • Bossaerts, Peter
  • Spatt, Chester


We analyze theoretically and empirically the implications of information asymmetry for equilibrium asset pricing and portfolio choice. In our partially revealing dynamic rational expectations equilibrium, portfolio separation fails, and indexing is not optimal. We show how uninformed investors should structure their portfolios, using the information contained in prices to cope with winner's curse problems. We implement empirically this price- contingent portfolio strategy. Consistent with our theory, the strategy outperforms economically and statistically the index. While momentum can arise in the model, in the data, the momentum strategy does not outperform the price-contingent strategy, as predicted by the theory. The Author 2010. Published by Oxford University Press on behalf of The Society for Financial Studies. All rights reserved. For Permissions, please e-mail:, Oxford University Press.
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  • Biais, Bruno & Bossaerts, Peter & Spatt, Chester, 2009. "Equilibrium Asset Pricing and Portofolio Choice Under Asymmetric Information," TSE Working Papers 09-018, Toulouse School of Economics (TSE).
  • Handle: RePEc:tse:wpaper:21923

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    References listed on IDEAS

    1. DeMarzo, Peter & Skiadas, Costis, 1998. "Aggregation, Determinacy, and Informational Efficiency for a Class of Economies with Asymmetric Information," Journal of Economic Theory, Elsevier, vol. 80(1), pages 123-152, May.
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    4. Jiang Wang, 1993. "A Model of Intertemporal Asset Prices Under Asymmetric Information," Review of Economic Studies, Oxford University Press, vol. 60(2), pages 249-282.
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    Cited by:

    1. Songzi Du & Haoxiang Zhu, 2014. "Welfare and Optimal Trading Frequency in Dynamic Double Auctions," NBER Working Papers 20588, National Bureau of Economic Research, Inc.
    2. Klaus Adam & Albert Marcet & Juan Pablo Nicolini, 2016. "Stock Market Volatility and Learning," Journal of Finance, American Finance Association, vol. 71(1), pages 33-82, February.
    3. Calvet, Laurent-Emmanuel & Czellar , Veronika, 2011. "state-observation sampling and the econometrics of learning models," Les Cahiers de Recherche 947, HEC Paris.
    4. Albuquerque, Rui & Miao, Jianjun, 2014. "Advance information and asset prices," Journal of Economic Theory, Elsevier, vol. 149(C), pages 236-275.
    5. Christian Hellwig & Aleh Tsyvinski & Elias Albagli, 2014. "Dynamic Dispersed Information and the Credit Spread Puzzle," 2014 Meeting Papers 808, Society for Economic Dynamics.
    6. Murizah Osman Salleh & Aziz Jaafar & M. Shahid Ebrahim, 2011. "The Inhibition of Usury (Riba An-Nasi'ah) and the Economic Underdevelopment of the Muslim World," Working Papers 11002, Bangor Business School, Prifysgol Bangor University (Cymru / Wales).
    7. Andrei, Daniel & Cujean, Julien, 2017. "Information percolation, momentum and reversal," Journal of Financial Economics, Elsevier, vol. 123(3), pages 617-645.
    8. He, Xue-Zhong & Shi, Lei, 2017. "Index portfolio and welfare analysis under heterogeneous beliefs," Journal of Banking & Finance, Elsevier, vol. 75(C), pages 64-79.
    9. Taylor, Daniel J. & Verrecchia, Robert E., 2015. "Delegated trade and the pricing of public and private information," Journal of Accounting and Economics, Elsevier, vol. 60(2), pages 8-32.
    10. Joel Vanden, 2015. "Noisy information and the size effect in stock returns," Annals of Finance, Springer, vol. 11(1), pages 77-107, February.
    11. Burlacu, Radu & Fontaine, Patrice & Jimenez-Garcès, Sonia & Seasholes, Mark S., 2012. "Risk and the cross section of stock returns," Journal of Financial Economics, Elsevier, vol. 105(3), pages 511-522.
    12. Murphy, Austin, 2012. "Biology-induced effects on investor psychology and behavior," International Review of Financial Analysis, Elsevier, vol. 24(C), pages 20-25.
    13. David Hirshleifer & Chong Huang & Siew Hong Teoh, 2017. "Model Uncertainty, Ambiguity Aversion, and Market Participation," NBER Working Papers 24143, National Bureau of Economic Research, Inc.
    14. Kondor, Péter, 2011. "The more we know on the fundamental, the less we agree on the price," CEPR Discussion Papers 8455, C.E.P.R. Discussion Papers.
    15. Manzano, Carolina & Vives, Xavier, 2011. "Public and private learning from prices, strategic substitutability and complementarity, and equilibrium multiplicity," Journal of Mathematical Economics, Elsevier, vol. 47(3), pages 346-369.
    16. Makarov, Igor & Rytchkov, Oleg, 2012. "Forecasting the forecasts of others: Implications for asset pricing," Journal of Economic Theory, Elsevier, vol. 147(3), pages 941-966.
    17. ap Gwilym, Rhys & Ebrahim, M. Shahid, 2013. "Can position limits restrain ‘rogue’ trading?," Journal of Banking & Finance, Elsevier, vol. 37(3), pages 824-836.
    18. Cespa, Giovanni & Vives, Xavier, 2011. "Expectations, Liquidity, and Short-term Trading," CEPR Discussion Papers 8303, C.E.P.R. Discussion Papers.
    19. Giovanni Cespa & Xavier Vives, 2015. "The Beauty Contest and Short-Term Trading," Journal of Finance, American Finance Association, vol. 70(5), pages 2099-2154, October.
    20. Gao, Feng & Song, Fengming & Wang, Jun, 2013. "Rational expectations equilibrium with uncertain proportion of informed traders," Journal of Financial Markets, Elsevier, vol. 16(3), pages 387-413.
    21. Shi, Lei, 2016. "Consumption-based CAPM with belief heterogeneity," Journal of Economic Dynamics and Control, Elsevier, vol. 65(C), pages 30-46.
    22. Ebrahim, M. Shahid & Mathur, Ike, 2013. "On the efficiency of the UPREIT organizational form: Implications for the subprime crisis and CDO's," Journal of Economic Behavior & Organization, Elsevier, vol. 85(C), pages 286-305.
    23. Buckley, Winston & Long, Hongwei & Perera, Sandun, 2014. "A jump model for fads in asset prices under asymmetric information," European Journal of Operational Research, Elsevier, vol. 236(1), pages 200-208.
    24. Steve, Heinke & Niels, Warmuth, 2016. "A Rational Inattention Perspective on Equilibrium Asset Pricing under Heterogeneous Information with Structural Breaks and Market Efficiency," MPRA Paper 68715, University Library of Munich, Germany.
    25. Arnold, Lutz Georg & Arnold, Lutz & Zelzner, Sebastian, 2016. "The Allocation of Talent to Financial Trading versus Production: Welfare and Employment Effects of Trading in General Equilibrium," Annual Conference 2016 (Augsburg): Demographic Change 145688, Verein für Socialpolitik / German Economic Association.

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