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Computing Equilibria in Finance Economies with Incomplete Markets and Transaction Costs

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  • P. Jean-Jacques Herings
  • Karl Schmedders

Abstract

Transaction costs on financial markets may have important consequences for volumes of trade, asset pricing, and welfare. This paper introduces an algorithm for the computation of equilibria in the general equilibrium model with incomplete asset markets and transaction costs. We show that economies with transaction costs can be analyzed with differentiable homotopy techniques and thus in the same framework as frictionless economies despite the existence of non-differentiabilities of agents’ asset demand functions and the existence of locally non-unique equilibria. We introduce an equilibrium selection concept into the computation of economic equilibria that picks out a specific equilibrium in the presence of a continuum of equilibria. Copyright Springer-Verlag Berlin/Heidelberg 2006
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  • P. Jean-Jacques Herings & Karl Schmedders, 2001. "Computing Equilibria in Finance Economies with Incomplete Markets and Transaction Costs," Discussion Papers 1318, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
    • Handle: RePEc:nwu:cmsems:1318
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    1. Carosi, Laura & Gori, Michele & Villanacci, Antonio, 2009. "Endogenous restricted participation in general financial equilibrium," Journal of Mathematical Economics, Elsevier, vol. 45(12), pages 787-806, December.
    2. Adrian Buss & Bernard Dumas, 2019. "The Dynamic Properties of Financial‐Market Equilibrium with Trading Fees," Journal of Finance, American Finance Association, vol. 74(2), pages 795-844, April.
    3. Gori, Michele & Pireddu, Marina & Villanacci, Antonio, 2013. "Regularity and Pareto improving on financial equilibria with price-dependent borrowing restrictions," Research in Economics, Elsevier, vol. 67(1), pages 100-110.
    4. Li, Peixuan & Dang, Chuangyin & Herings, P.J.J., 2023. "Computing Perfect Stationary Equilibria in Stochastic Games," Discussion Paper 2023-006, Tilburg University, Center for Economic Research.
    5. Yang Zhan & Peixuan Li & Chuangyin Dang, 2020. "A differentiable path-following algorithm for computing perfect stationary points," Computational Optimization and Applications, Springer, vol. 76(2), pages 571-588, June.
    6. Martins-da-Rocha, Victor Filipe & Vailakis, Yiannis, 2008. "Endogenous Transaction Costs," FGV EPGE Economics Working Papers (Ensaios Economicos da EPGE) 680, EPGE Brazilian School of Economics and Finance - FGV EPGE (Brazil).
    7. Cao, Yiyin & Dang, Chuangyin & Xiao, Zhongdong, 2022. "A differentiable path-following method to compute subgame perfect equilibria in stationary strategies in robust stochastic games and its applications," European Journal of Operational Research, Elsevier, vol. 298(3), pages 1032-1050.
    8. Marko Backovic & Zoran Popovic, 2012. "The Analysis Of Model Of General Economic Equilibrium And Financial Instability Of Economic System," Montenegrin Journal of Economics, Economic Laboratory for Transition Research (ELIT), vol. 8(1), pages 63-85.
    9. Chuangyin Dang & P. Jean-Jacques Herings & Peixuan Li, 2022. "An Interior-Point Differentiable Path-Following Method to Compute Stationary Equilibria in Stochastic Games," INFORMS Journal on Computing, INFORMS, vol. 34(3), pages 1403-1418, May.
    10. Yang Zhan & Chuangyin Dang, 2021. "Computing equilibria for markets with constant returns production technologies," Annals of Operations Research, Springer, vol. 301(1), pages 269-284, June.
    11. Michele Gori & Marina Pireddu & Antonio Villanacci, 2010. "Regularity and Pareto Improving on financial equilibria with endogenous borrowing restrictions," Working Papers - Mathematical Economics 2010-08, Universita' degli Studi di Firenze, Dipartimento di Scienze per l'Economia e l'Impresa, revised Aug 2012.
    12. Dang, Chuangyin & Herings, P. Jean-Jacques & Li, Peixuan, 2020. "An Interior-Point Path-Following Method to Compute Stationary Equilibria in Stochastic Games," Research Memorandum 001, Maastricht University, Graduate School of Business and Economics (GSBE).
    13. V. Martins-da-Rocha & Yiannis Vailakis, 2010. "Financial markets with endogenous transaction costs," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 45(1), pages 65-97, October.

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