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Pareto improvement and agenda control of sequential financial innovations

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  • Hara, Chiaki

Abstract

In an exchange economy under uncertainty with two periods, one physical good, and finitely many states of the world, we show that for every (complete or incomplete) market span there exists a sequence of securities such that if they are introduced into markets one by one, the prices of any security is not affected by the subsequent introduction of newer securities and they together generate the given market span. Since these securities generate no pecuniary externalities, this result implies that every stage of such sequential financial innovations is Pareto-improving. Its implications on financial innovations via voting are also explored.

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  • Hara, Chiaki, 2011. "Pareto improvement and agenda control of sequential financial innovations," Journal of Mathematical Economics, Elsevier, vol. 47(3), pages 336-345.
    • Handle: RePEc:eee:mateco:v:47:y:2011:i:3:p:336-345
    DOI: 10.1016/j.jmateco.2010.12.013
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    Cited by:

    1. Marc Oliver Bettzüge & Thorsten Hens & Michael Zierhut, 2022. "Financial intermediation and the welfare theorems in incomplete markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 73(2), pages 457-486, April.
    2. Mustansar, Talreja, 2023. "Financial innovation, technological improvement and bank’ profitability," OSF Preprints 8wy95, Center for Open Science.
    3. Chiaki Hara, 2018. "Equilibrium Prices of the Market Portfolio in the CAPM with Incomplete Financial Markets," KIER Working Papers 1005, Kyoto University, Institute of Economic Research.

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    More about this item

    Keywords

    General equilibrium theory of incomplete security markets; Financial innovation; Pareto improvement; Agenda control; Nash equilibrium; Subgame perfect equilibrium;
    All these keywords.

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • D51 - Microeconomics - - General Equilibrium and Disequilibrium - - - Exchange and Production Economies
    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • D61 - Microeconomics - - Welfare Economics - - - Allocative Efficiency; Cost-Benefit Analysis
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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