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Stock market booms, endogenous credit creation and the implications of broad and narrow banking for macroeconomic stability

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  • Chiarella, Carl
  • Flaschel, Peter
  • Hartmann, Florian
  • Proaño, Christian R.

Abstract

In this paper we study the implications of the present broad banking system for macroeconomic stability. We show that when commercial banks are allowed to trade in financial assets (here equities) as a substitute for traditional lending, the macroeconomic system is likely to be an unstable one. We then consider a narrow banking system defined by a Fisherian 100 percent reserve ratio for checkable deposits and the ban for commercial banks from trading in stocks and other financial assets. Within the stylized theoretical framework set up here, we show that in the second system macroeconomic stability is guaranteed by some weak assumptions on the behavior of economic agents. Moreover, while a sufficient loan supply can be guaranteed in such a framework, the rationale for bank runs can be eliminated, in contrast to what is likely to happen under traditional broad banking. Though narrow banking is an extreme banking system unlikely to be adopted in the short-run, its features highlight the stability and efficiency properties that the separation between commercial and investment banking bring about.

Suggested Citation

  • Chiarella, Carl & Flaschel, Peter & Hartmann, Florian & Proaño, Christian R., 2012. "Stock market booms, endogenous credit creation and the implications of broad and narrow banking for macroeconomic stability," Journal of Economic Behavior & Organization, Elsevier, vol. 83(3), pages 410-423.
    • Handle: RePEc:eee:jeborg:v:83:y:2012:i:3:p:410-423
    DOI: 10.1016/j.jebo.2012.03.004
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    3. Gurgone, Andrea & Iori, Giulia & Jafarey, Saqib, 2018. "The effects of interbank networks on efficiency and stability in a macroeconomic agent-based model," Journal of Economic Dynamics and Control, Elsevier, vol. 91(C), pages 257-288.
    4. Patrizio Laina, 2015. "Money Creation under Full-reserve Banking: A Stock-flow Consistent Model," Economics Working Paper Archive wp_851, Levy Economics Institute.
    5. Samuel Demeulemeester, 2022. "What analytical framework for Sovereign Money? Some insight from the 100% Money literature, and a comment on criticisms," Working Papers hal-03751756, HAL.
    6. Matthieu Charpe & Peter Flaschel & Florian Hartmann & Roberto Veneziani, 2012. "Towards Keynesian DSGD (isequilibrium) Modelling: Real-Financial Market Interactions with Heterogeneous Expectations Dynamics," IMK Working Paper 93-2012, IMK at the Hans Boeckler Foundation, Macroeconomic Policy Institute.
    7. Park, Hyun Woong, 2019. "Securitized banking, procyclical bank leverage, and financial instability," Structural Change and Economic Dynamics, Elsevier, vol. 49(C), pages 283-300.
    8. Di Guilmi, Corrado & Galanis, Giorgos & Proaño, Christian R., 2023. "A Baseline Model of Behavioral Political Cycles and Macroeconomic Fluctuations," Journal of Economic Behavior & Organization, Elsevier, vol. 213(C), pages 50-67.
    9. Yannis Dafermos, 2015. "Debt cycles, instability and fiscal rules: a Godley-Minsky model," Working Papers 20151509, Department of Accounting, Economics and Finance, Bristol Business School, University of the West of England, Bristol.
    10. Richters, Oliver & Siemoneit, Andreas, 2019. "Marktwirtschaft reparieren: Entwurf einer freiheitlichen, gerechten und nachhaltigen Utopie," EconStor Books, ZBW - Leibniz Information Centre for Economics, number 213814, July.
    11. Patrizio Lainà, 2015. "Proposals for Full-Reserve Banking: A Historical Survey from David Ricardo to Martin Wolf," Economic Thought, World Economics Association, vol. 4(2), pages 1-1, September.
    12. Peter Flaschel & Sigrid Luchtenberg, 2012. "Roads to Social Capitalism," Books, Edward Elgar Publishing, number 14812.
    13. Daniele Tavani & Luca Zamparelli, 2020. "Growth, income distribution, and the ‘entrepreneurial state’," Journal of Evolutionary Economics, Springer, vol. 30(1), pages 117-141, January.
    14. Florian Hartmann & Matthieu Charpe & Peter Flaschel & Roberto Veneziani, 2016. "A Basic Model of Real-Financial Market Interactions with Heterogeneous Opinion Dynamics," IEER Working Papers 104, Institute of Empirical Economic Research, Osnabrueck University, revised 26 May 2016.
    15. Naira Kotb & Christian R. Proaño, 2023. "Capital‐constrained loan creation, household stock market participation and monetary policy in a behavioural new Keynesian model," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 28(4), pages 3789-3807, October.
    16. Samuel Demeulemeester, 2022. "Divorcing money creation from bank loans: revisiting the “100% money” proposal of the 1930s [Dissocier la création monétaire des prêts bancaires : retour sur la proposition "100% monnaie"," Post-Print hal-03938669, HAL.

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    More about this item

    Keywords

    Financial markets; Credit creation; Broad and narrow banking; Macroeconomic instability;
    All these keywords.

    JEL classification:

    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory
    • E24 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Employment; Unemployment; Wages; Intergenerational Income Distribution; Aggregate Human Capital; Aggregate Labor Productivity
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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