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Financial Market Equilibrium with Bounded Awareness 1

Author

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  • Ani Guerdjikova

    (GAEL - Laboratoire d'Economie Appliquée de Grenoble - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UGA - Université Grenoble Alpes - Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology - UGA - Université Grenoble Alpes)

  • John Quiggin

    (UQ [All campuses : Brisbane, Dutton Park Gatton, Herston, St Lucia and other locations] - The University of Queensland)

Abstract

We consider an infinite-horizon economy with differential awareness in the form of coarsening. Agents with limited awareness are averse to unfavorable surprises. As a result their optimal trades are measurable w.r.t. their respective awareness partitions. We define an equilibrium with differential awareness and illustrate how the obtained equilibrium allocations observationally differ from those in economies with full awareness. In particular, economies with differential awareness can exhibit (i) lack of insurance against idiosyncratic risk; (ii) partial insurance against aggregate risk; (iii) biased state prices even when beliefs are correct and (iv) overpricing of assets which pay on events with low aggregate payoffs. We next adapt the results of Guerdjikova and Quiggin (2019) to show that agents with different levels of awareness can survive and influence prices in the limit. In this sense, the characteristics identified above would persist in the long-run. Moreover, differential awareness can lead to belief heterogeneity even in the limit. This is in contrast with the classical result of Blume and Easley (2006) stating that only agents with beliefs closest to the truth can survive. Finally, we examine the individual welfare implications of bounded awareness. If an increase in awareness comes at the cost of wrong beliefs over the larger state-space, bounded awareness can simultaneously increase individual welfare (with respect to the truth) and help avoid ruin. In this sense, heuristics which constrain agents to invest in "assets they understand" can be both ecologically rational in the sense of Gigerenzer (2007) and improve the stability of financial markets by allowing a larger set of agents to survive.

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  • Ani Guerdjikova & John Quiggin, 2023. "Financial Market Equilibrium with Bounded Awareness 1," Working Papers hal-03962427, HAL.
    • Handle: RePEc:hal:wpaper:hal-03962427
    Note: View the original document on HAL open archive server: https://hal.science/hal-03962427
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    References listed on IDEAS

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    1. Blume, Lawrence E. & Cogley, Timothy & Easley, David A. & Sargent, Thomas J. & Tsyrennikov, Viktor, 2018. "A case for incomplete markets," Journal of Economic Theory, Elsevier, vol. 178(C), pages 191-221.
    2. Minardi, Stefania & Savochkin, Andrei, 2019. "Subjective contingencies and limited Bayesian updating," Journal of Economic Theory, Elsevier, vol. 183(C), pages 1-45.
    3. Luigi Guiso & Tullio Jappelli, 2005. "Awareness and Stock Market Participation," Review of Finance, European Finance Association, vol. 9(4), pages 537-567.
    4. Kehoe, Timothy J & Levine, David K, 1985. "Comparative Statics and Perfect Foresight in Infinite Horizon Economies," Econometrica, Econometric Society, vol. 53(2), pages 433-453, March.
    5. Li, Jing, 2009. "Information structures with unawareness," Journal of Economic Theory, Elsevier, vol. 144(3), pages 977-993, May.
    6. Itzhak Gilboa & Larry Samuelson & David Schmeidler, 2014. "No‐Betting‐Pareto Dominance," Econometrica, Econometric Society, vol. 82(4), pages 1405-1442, July.
    7. Lawrence Blume & David Easley, 2006. "If You're so Smart, why Aren't You Rich? Belief Selection in Complete and Incomplete Markets," Econometrica, Econometric Society, vol. 74(4), pages 929-966, July.
    8. Ani Guerdjikova & John Quiggin, 2019. "Market Selection With Differential Financial Constraints," Econometrica, Econometric Society, vol. 87(5), pages 1693-1762, September.
    9. Ani Guerdjikova & John Quiggin, 2019. "Supplement to "Market Selection with Differential Financial Constraints"," Working Papers hal-02099920, HAL.
    10. Grant, Simon & Quiggin, John, 2013. "Bounded awareness, heuristics and the Precautionary Principle," Journal of Economic Behavior & Organization, Elsevier, vol. 93(C), pages 17-31.
    11. Alp Simsek, 2013. "Financial Innovation and Portfolio Risks," American Economic Review, American Economic Association, vol. 103(3), pages 398-401, May.
    12. Heifetz, Aviad & Meier, Martin & Schipper, Burkhard C., 2006. "Interactive unawareness," Journal of Economic Theory, Elsevier, vol. 130(1), pages 78-94, September.
    13. Bewley, Truman F., 1972. "Existence of equilibria in economies with infinitely many commodities," Journal of Economic Theory, Elsevier, vol. 4(3), pages 514-540, June.
    14. BEWLEY, Truman F., 1972. "Existence of equilibria in economies with infinitely many commodities," LIDAM Reprints CORE 122, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    15. Scott Condie, 2008. "Living with ambiguity: prices and survival when investors have heterogeneous preferences for ambiguity," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 36(1), pages 81-108, July.
    16. Markus K. Brunnermeier & Alp Simsek & Wei Xiong, 2014. "A Welfare Criterion For Models With Distorted Beliefs," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(4), pages 1753-1797.
    17. Armen A. Alchian, 1950. "Uncertainty, Evolution, and Economic Theory," Journal of Political Economy, University of Chicago Press, vol. 58, pages 211-211.
    18. Brad M. Barber & Terrance Odean, 2001. "Boys will be Boys: Gender, Overconfidence, and Common Stock Investment," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 116(1), pages 261-292.
    19. Brad M. Barber & Terrance Odean, 2002. "Online Investors: Do the Slow Die First?," The Review of Financial Studies, Society for Financial Studies, vol. 15(2), pages 455-488, March.
    20. Sandroni, Alvaro, 2005. "Market selection when markets are incomplete," Journal of Mathematical Economics, Elsevier, vol. 41(1-2), pages 91-104, February.
    21. Blume, Lawrence E. & Easley, David, 1993. "Economic natural selection," Economics Letters, Elsevier, vol. 42(2-3), pages 281-289.
    22. Christos Kountzakis & Ioannis Polyrakis, 2006. "The completion of security markets," Decisions in Economics and Finance, Springer;Associazione per la Matematica, vol. 29(1), pages 1-21, May.
    23. Terrance Odean, 1999. "Do Investors Trade Too Much?," American Economic Review, American Economic Association, vol. 89(5), pages 1279-1298, December.
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    1. Financial market equilibrium with bounded awareness
      by John Quiggin in John Quiggin on 2020-09-28 08:53:32

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    Cited by:

    1. Sarah Auster & Jeremy Kettering & Asen Kochov, 2021. "Sequential Trading With Coarse Contingencies," CRC TR 224 Discussion Paper Series crctr224_2021_254, University of Bonn and University of Mannheim, Germany.

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    More about this item

    Keywords

    Ambiguity; Ambiguity-aversion; Survival;
    All these keywords.

    JEL classification:

    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets

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