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Welfare effects of short-sale constraints under heterogeneous beliefs

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  • Hiroyuki Nakata

Abstract

This paper examines the welfare effects of short-sale constraints in an overlapping generations model of a financial economy with heterogeneous beliefs by focussing on the case of rational beliefs in the sense of Kurz (Econ Theory 4:877–900, 1994 ). To measure the social welfare, we adopt a measure that is based on the ex post social welfare concept in the sense of Hammond (Economica 48:235–250, 1981 ), instead of the standard ex ante criterion, since heterogeneity in beliefs invalidates it. Simulation results indicate the existence of socially optimal short-sale constraints. Copyright Springer-Verlag 2013

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  • Hiroyuki Nakata, 2013. "Welfare effects of short-sale constraints under heterogeneous beliefs," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 53(2), pages 283-314, June.
    • Handle: RePEc:spr:joecth:v:53:y:2013:i:2:p:283-314
    DOI: 10.1007/s00199-012-0691-5
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    1. Mordecai Kurz & Maurizio Motolese, 2011. "Diverse beliefs and time variability of risk premia," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 47(2), pages 293-335, June.
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    Cited by:

    1. Carsten Krabbe Nielsen, 2018. "Rational overconfidence and social security: subjective beliefs, objective welfare," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 65(2), pages 179-229, March.
    2. Motolese, Maurizio & Nakata, Hiroyuki, 2024. "Are macroeconomic indices fool's gold?," Journal of Economic Behavior & Organization, Elsevier, vol. 217(C), pages 240-260.
    3. Maurizio MOTOLESE & NAKATA Hiroyuki, 2016. "Endogenous Fluctuations and Social Welfare under Credit Constraints and Heterogeneous Beliefs," Discussion papers 16082, Research Institute of Economy, Trade and Industry (RIETI).

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    More about this item

    Keywords

    Ex post social welfare; Heterogeneous beliefs; Rational beliefs; Short-sale constraint; D52; D83; D84; G18;
    All these keywords.

    JEL classification:

    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • D84 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Expectations; Speculations
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation

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