IDEAS home Printed from https://ideas.repec.org/p/ehl/lserod/24703.html
   My bibliography  Save this paper

A model to analyse financial fragility

Author

Listed:
  • Goodhart, Charles
  • Sunirand, Pojanart
  • Tsomocos, Dimitrios P.

Abstract

Our purpose in this paper is to produce a tractable model which illuminates problems relating to individual bank behaviour and risk-taking, to possible contagious interrelationships between banks, and to the appropriate design of prudential requirements and incentives to limit ‘excessive’ risk-taking. Our model is rich enough to include heterogenous agents (commercial banks and investors), endogenous default, and multiple commodity, and credit and deposit markets. Yet, it is simple enough to be effectively computable. Financial fragility emerges naturally as an equilibrium phenomenon. In our model a version of the liquidity trap can occur. Moreover, the Modigliani-Miller proposition fails either through frictions in the (nominal) financial system or through incentives, arising from the imposed capital requirements, for differential investment behaviour because of capital requirements. In addition, a non-trivial quantity theory of money is derived, liquidity and default premia co-determine interest rates, and both regulatory and monetary policies have non-neutral effects. The model also indicates how monetary policy may affect financial fragility, thus highlighting the trade-off between financial stability and economic efficiency.

Suggested Citation

  • Goodhart, Charles & Sunirand, Pojanart & Tsomocos, Dimitrios P., 2004. "A model to analyse financial fragility," LSE Research Online Documents on Economics 24703, London School of Economics and Political Science, LSE Library.
  • Handle: RePEc:ehl:lserod:24703
    as

    Download full text from publisher

    File URL: http://eprints.lse.ac.uk/24703/
    File Function: Open access version.
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Tobin, James, 1982. " The Commercial Banking Firm: A Simple Model," Scandinavian Journal of Economics, Wiley Blackwell, vol. 84(4), pages 495-530.
    2. Geanakoplos, J. D. & Tsomocos, D. P., 2002. "International finance in general equilibrium," Research in Economics, Elsevier, vol. 56(1), pages 85-142, June.
    3. Tsomocos, Dimitrios P., 2003. "Equilibrium analysis, banking and financial instability," Journal of Mathematical Economics, Elsevier, vol. 39(5-6), pages 619-655, July.
    4. Tomoyuki Nakajima & Herakles Polemarchakis, 2005. "Money and Prices Under Uncertainty," Review of Economic Studies, Oxford University Press, vol. 72(1), pages 223-246.
    5. Hart, Oliver D., 1975. "On the optimality of equilibrium when the market structure is incomplete," Journal of Economic Theory, Elsevier, vol. 11(3), pages 418-443, December.
    6. Charles Goodhart, 1989. "Money, Information and Uncertainty: 2nd Edition," MIT Press Books, The MIT Press, edition 2, volume 1, number 0262071223.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Goodhart, Charles A. E. & Sunirand, Pojanart & Tsomocos, Dimitrios P., 2004. "A model to analyse financial fragility: applications," Journal of Financial Stability, Elsevier, vol. 1(1), pages 1-30, September.
    2. Dimitrios Tsomocos, 2003. "Equilibrium analysis, banking, contagion and financial fragility," FMG Discussion Papers dp450, Financial Markets Group.
    3. Tsomocos, Dimitrios P., 2003. "Equilibrium analysis, banking and financial instability," Journal of Mathematical Economics, Elsevier, vol. 39(5-6), pages 619-655, July.
    4. Charles A.E. Goodhart & Pojanart Sunirand & Dimitrios P. Tsomocos, 2005. "A risk assessment model for banks," Annals of Finance, Springer, vol. 1(2), pages 197-224, September.
    5. Peiris, M. Udara & Tsomocos, Dimitrios P., 2015. "International monetary equilibrium with default," Journal of Mathematical Economics, Elsevier, vol. 56(C), pages 47-57.
    6. Herakles Polemarchakis, 2015. "Markets and Efficiency," The Japanese Economic Review, Japanese Economic Association, vol. 66(2), pages 150-166, June.
    7. Raphaël Espinoza & Charles. Goodhart & Dimitrios Tsomocos, 2009. "State prices, liquidity, and default," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 39(2), pages 177-194, May.
    8. Zhan, Yang & Dang, Chuangyin, 2021. "Determination of general equilibrium with incomplete markets and default penalties," Journal of Mathematical Economics, Elsevier, vol. 92(C), pages 49-59.
    9. Xuan Wang, 2019. "When Do Currency Unions Benefit From Default ?," 2019 Papers pwa938, Job Market Papers.
    10. M. Peiris & Alexandros Vardoulakis, 2015. "Collateral and the efficiency of monetary policy," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 59(3), pages 579-603, August.
    11. Dmitry Levando, 2012. "A Survey Of Strategic Market Games," Economic Annals, Faculty of Economics, University of Belgrade, vol. 57(194), pages 63-106, July - Se.
    12. Hui Huang & John Whalley & Shunming Zhang, 2009. "Exploring policy options in joint intertemporal-spatial trade models using an incomplete markets approach," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 41(1), pages 131-145, October.
    13. Xuan Wang, 2021. "Bankruptcy Codes and Risk Sharing of Currency Unions," Tinbergen Institute Discussion Papers 21-009/IV, Tinbergen Institute.
    14. Q. Akram & Gunnar Bårdsen & Kjersti-Gro Lindquist, 2007. "Pursuing financial stability under an inflation-targeting regime," Annals of Finance, Springer, vol. 3(1), pages 131-153, January.
    15. Mas-Colell, Andreu & Zame, William R., 1996. "The existence of security market equilibrium with a non-atomic state space," Journal of Mathematical Economics, Elsevier, vol. 26(1), pages 63-84.
    16. Momi, Takeshi, 2010. "Excess demand function around critical prices in incomplete markets," Journal of Mathematical Economics, Elsevier, vol. 46(3), pages 293-302, May.
    17. Lionel de Boisdeffre, 2018. "Sequential equilibrium without rational expectations of prices: A theorem of full existence," Post-Print halshs-01593567, HAL.
    18. David Kelsey & Frank Milne, 2006. "Externalities, monopoly and the objective function of the firm," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 29(3), pages 565-589, November.
    19. John Geanakoplos & William Zame, 2014. "Collateral equilibrium, I: a basic framework," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 56(3), pages 443-492, August.
    20. Dimitrios Tsomocos & Sudipto Bhattacharya & Charles Goodhart & Pojanart Sunirand, 2007. "Banks, relative performance, and sequential contagion," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 32(2), pages 381-398, August.

    More about this item

    JEL classification:

    • F3 - International Economics - - International Finance
    • G3 - Financial Economics - - Corporate Finance and Governance
    • J1 - Labor and Demographic Economics - - Demographic Economics

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ehl:lserod:24703. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: . General contact details of provider: https://edirc.repec.org/data/lsepsuk.html .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: LSERO Manager (email available below). General contact details of provider: https://edirc.repec.org/data/lsepsuk.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.