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Ambiguity, information acquisition and price swings in asset markets

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  • Mele, Antonio
  • Sangiorgi, Francesco

Abstract

This paper studies asset markets in which ambiguity averse investors face Knightian uncertainty about expected payos. The same investors, however, might wish to resolve their uncertainty, although not risk, by just purchasing information. In these markets, uninformed and, hence, ambiguity averse, agents may coexist with informed agents, as a result of a rational information acquisition process. Moreover, there are complementaries in information acquisition, multiplicity of equilibria, history-dependent prices, and large price swings occurring after small changes in the uncertainty surrounding the asset expected payos. Our model suggests the importance of uncertainty, as a new channel for episodes of extreme price volatility, media frenzies and media glooms.

Suggested Citation

  • Mele, Antonio & Sangiorgi, Francesco, 2009. "Ambiguity, information acquisition and price swings in asset markets," LSE Research Online Documents on Economics 24424, London School of Economics and Political Science, LSE Library.
  • Handle: RePEc:ehl:lserod:24424
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    File URL: http://eprints.lse.ac.uk/24424/
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    References listed on IDEAS

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    1. Peter Klibanoff & Massimo Marinacci & Sujoy Mukerji, 2005. "A Smooth Model of Decision Making under Ambiguity," Econometrica, Econometric Society, vol. 73(6), pages 1849-1892, November.
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    Citations

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    Cited by:

    1. Edison Yu, 2013. "Dynamic market participation and endogenous information aggregation," Working Papers 13-42, Federal Reserve Bank of Philadelphia.
    2. Jeleva, Meglena & Tallon, Jean-Marc, 2016. "Ambiguïté, comportements et marchés financiers," L'Actualité Economique, Société Canadienne de Science Economique, vol. 92(1-2), pages 351-383, Mars-Juin.
    3. Larry G. Epstein & Martin Schneider, 2010. "Ambiguity and Asset Markets," Annual Review of Financial Economics, Annual Reviews, vol. 2(1), pages 315-346, December.
    4. Illeditsch, PK & Ganguli, J & Condie, S, 2017. "Information Inertia (Working Paper)," Economics Discussion Papers 15615, University of Essex, Department of Economics.
    5. Konstantinos Georgalos, 2016. "Dynamic decision making under ambiguity," Working Papers 112111041, Lancaster University Management School, Economics Department.
    6. Xavier Vives, 2014. "On The Possibility Of Informationally Efficient Markets," Journal of the European Economic Association, European Economic Association, vol. 12(5), pages 1200-1239, October.
    7. Scott Condie & Jayant Ganguli, 2011. "Informational efficiency with ambiguous information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(2), pages 229-242, October.
    8. Ganguli, Jayant & Condie, Scott, 2012. "The pricing effects of ambiguous private information," Economics Discussion Papers 5631, University of Essex, Department of Economics.
    9. repec:esx:essedp:719 is not listed on IDEAS
    10. Dicks, David & Fulghieri, Paolo, 2015. "Ambiguity, Disagreement, and Allocation of Control in Firms," CEPR Discussion Papers 10400, C.E.P.R. Discussion Papers.
    11. Fuess, Roland & Ruf, Daniel, 2015. "Pre-Trade Transparency and Return Co-movements in Commercial Real Estate Markets," Working Papers on Finance 1520, University of St. Gallen, School of Finance, revised Jan 2017.
    12. Michele Berardi, 2016. "Herding through learning in an asset pricing model," Centre for Growth and Business Cycle Research Discussion Paper Series 223, Economics, The Univeristy of Manchester.
    13. Liyan Yang & Itay Goldstein, 2012. "Information Diversity and Market Efficiency Spirals," 2012 Meeting Papers 349, Society for Economic Dynamics.
    14. repec:esx:essedp:720 is not listed on IDEAS
    15. Ganguli, J & Condie, S & Illeditsch, PK, 2012. "Information Inertia," Economics Discussion Papers 5628, University of Essex, Department of Economics.
    16. repec:esx:essedp:770 is not listed on IDEAS
    17. Han Ozsoylev & Jan Werner, 2011. "Liquidity and asset prices in rational expectations equilibrium with ambiguous information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(2), pages 469-491, October.
    18. Dicks, David & Fulghieri, Paolo, 2016. "Innovation Waves, Investor Sentiment, and Mergers," CEPR Discussion Papers 11082, C.E.P.R. Discussion Papers.
    19. Martin Schneider, 2010. "The Research Agenda: Martin Schneider on Multiple Priors Preferences and Financial Markets," EconomicDynamics Newsletter, Review of Economic Dynamics, vol. 11(2), April.

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    JEL classification:

    • J1 - Labor and Demographic Economics - - Demographic Economics

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