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Understanding the consequences of diversification on financial stability

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  • Opeoluwa Banwo

    (University College London)

  • Paul Harrald

    (University College London)

  • Francesca Medda

    (University College London)

Abstract

In this paper, we study the consequences of diversification on financial stability and social welfare using an agent based model that couples the real economy and a financial system. We validate the model against its ability to reproduce several stylized facts reported in real economies. We find that the risk of an isolated bank failure (i.e. idiosyncratic risk) is decreasing with diversification. In contrast, the probability of joint failures (i.e. systemic risk) is increasing with diversification which results in more downturns in the real sector. Additionally, we find that the system displays a “robust yet fragile” behaviour particularly for low diversification. Moreover, we study the impact of introducing preferential attachment into the lending relationships between banks and firms. Finally, we show that a regulatory policy that promotes bank–firm credit transactions that reduce similarity between banks can improve financial stability whilst permitting diversification.

Suggested Citation

  • Opeoluwa Banwo & Paul Harrald & Francesca Medda, 2019. "Understanding the consequences of diversification on financial stability," Journal of Economic Interaction and Coordination, Springer;Society for Economic Science with Heterogeneous Interacting Agents, vol. 14(2), pages 273-292, June.
    • Handle: RePEc:spr:jeicoo:v:14:y:2019:i:2:d:10.1007_s11403-018-0216-9
    DOI: 10.1007/s11403-018-0216-9
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    1. Edoardo Gaffeo & Domenico Delli Gatti & Saul Desiderio & Mauro Gallegati, 2008. "Adaptive Microfoundations for Emergent Macroeconomics," Eastern Economic Journal, Palgrave Macmillan;Eastern Economic Association, vol. 34(4), pages 441-463.
    2. Poledna, Sebastian & Molina-Borboa, José Luis & Martínez-Jaramillo, Serafín & van der Leij, Marco & Thurner, Stefan, 2015. "The multi-layer network nature of systemic risk and its implications for the costs of financial crises," Journal of Financial Stability, Elsevier, vol. 20(C), pages 70-81.
    3. Acharya, Viral V., 2009. "A theory of systemic risk and design of prudential bank regulation," Journal of Financial Stability, Elsevier, vol. 5(3), pages 224-255, September.
    4. Wagner, Wolf, 2010. "Diversification at financial institutions and systemic crises," Journal of Financial Intermediation, Elsevier, vol. 19(3), pages 373-386, July.
    5. James B. Bullard & Christopher J. Neely & David C. Wheelock, 2009. "Systemic risk and the financial crisis: a primer," Review, Federal Reserve Bank of St. Louis, vol. 91(Sep), pages 403-418.
    6. Acharya, Viral V. & Yorulmazer, Tanju, 2007. "Too many to fail--An analysis of time-inconsistency in bank closure policies," Journal of Financial Intermediation, Elsevier, vol. 16(1), pages 1-31, January.
    7. Gai, Prasanna & Kapadia, Sujit, 2010. "Contagion in financial networks," Bank of England working papers 383, Bank of England.
    8. Mikael Bask, 2012. "Asset Price Misalignments And Monetary Policy," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 17(3), pages 221-241, July.
    9. John Geanakoplos & Robert Axtell & J. Doyne Farmer & Peter Howitt & Benjamin Conlee & Jonathan Goldstein & Matthew Hendrey & Nathan M. Palmer & Chun-Yi Yang, 2012. "Getting at Systemic Risk via an Agent-Based Model of the Housing Market," American Economic Review, American Economic Association, vol. 102(3), pages 53-58, May.
    10. Benczur, Peter & Cannas, Giuseppina & Cariboni, Jessica & Di Girolamo, Francesca & Maccaferri, Sara & Petracco Giudici, Marco, 2017. "Evaluating the effectiveness of the new EU bank regulatory framework: A farewell to bail-out?," Journal of Financial Stability, Elsevier, vol. 33(C), pages 207-223.
    11. Anand, Kartik & Gai, Prasanna & Kapadia, Sujit & Brennan, Simon & Willison, Matthew, 2013. "A network model of financial system resilience," Journal of Economic Behavior & Organization, Elsevier, vol. 85(C), pages 219-235.
    12. Wagner, Wolf & Marsh, Ian W., 2006. "Credit risk transfer and financial sector stability," Journal of Financial Stability, Elsevier, vol. 2(2), pages 173-193, June.
    13. Klimek, Peter & Poledna, Sebastian & Doyne Farmer, J. & Thurner, Stefan, 2015. "To bail-out or to bail-in? Answers from an agent-based model," Journal of Economic Dynamics and Control, Elsevier, vol. 50(C), pages 144-154.
    14. Hüser, Anne-Caroline & Hałaj, Grzegorz & Kok, Christoffer & Perales, Cristian & van der Kraaij, Anton, 2018. "The systemic implications of bail-in: A multi-layered network approach," Journal of Financial Stability, Elsevier, vol. 38(C), pages 81-97.
    15. Lux, Thomas, 2016. "A model of the topology of the bank – firm credit network and its role as channel of contagion," Journal of Economic Dynamics and Control, Elsevier, vol. 66(C), pages 36-53.
    16. Erlingsson, Einar Jon & Teglio, Andrea & Cincotti, Silvano & Stefansson, Hlynur & Sturlusson, Jon Thor & Raberto, Marco, 2014. "Housing market bubbles and business cycles in an agent-based credit economy," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy (IfW Kiel), vol. 8, pages 1-42.
    17. Dosi, Giovanni & Fagiolo, Giorgio & Roventini, Andrea, 2010. "Schumpeter meeting Keynes: A policy-friendly model of endogenous growth and business cycles," Journal of Economic Dynamics and Control, Elsevier, vol. 34(9), pages 1748-1767, September.
    18. Hommes,Cars, 2015. "Behavioral Rationality and Heterogeneous Expectations in Complex Economic Systems," Cambridge Books, Cambridge University Press, number 9781107564978, November.
    19. Conlon, Thomas & Cotter, John, 2014. "Anatomy of a bail-in," Journal of Financial Stability, Elsevier, vol. 15(C), pages 257-263.
    20. Lengnick, Matthias, 2013. "Agent-based macroeconomics: A baseline model," Journal of Economic Behavior & Organization, Elsevier, vol. 86(C), pages 102-120.
    21. Caccioli, Fabio & Farmer, J. Doyne & Foti, Nick & Rockmore, Daniel, 2015. "Overlapping portfolios, contagion, and financial stability," Journal of Economic Dynamics and Control, Elsevier, vol. 51(C), pages 50-63.
    22. Merton, Robert C, 1974. "On the Pricing of Corporate Debt: The Risk Structure of Interest Rates," Journal of Finance, American Finance Association, vol. 29(2), pages 449-470, May.
    23. Acharya, Viral & Yorulmazer, Tanju, 2005. "Cash-in-the-Market Pricing and Optimal Bank Bailout Policy," CEPR Discussion Papers 5154, C.E.P.R. Discussion Papers.
    24. Montagna, Mattia & Kok, Christoffer, 2013. "Multi-layered interbank model for assessing systemic risk," Kiel Working Papers 1873, Kiel Institute for the World Economy (IfW Kiel).
    25. Helmut Elsinger & Alfred Lehar & Martin Summer, 2006. "Risk Assessment for Banking Systems," Management Science, INFORMS, vol. 52(9), pages 1301-1314, September.
    26. Allen, Franklin & Carletti, Elena, 2006. "Credit risk transfer and contagion," Journal of Monetary Economics, Elsevier, vol. 53(1), pages 89-111, January.
    27. Mistrulli, Paolo Emilio, 2011. "Assessing financial contagion in the interbank market: Maximum entropy versus observed interbank lending patterns," Journal of Banking & Finance, Elsevier, vol. 35(5), pages 1114-1127, May.
    28. Helmut Elsinger & Alfred Lehar & Martin Summer, 2006. "Using Market Information for Banking System Risk Assessment," International Journal of Central Banking, International Journal of Central Banking, vol. 2(1), March.
    29. Bridges, Jonathan & Gregory, David & Nielsen, Mette & Pezzini, Silvia & Radia, Amar & Spaltro, Marco, 2014. "The impact of capital requirements on bank lending," Bank of England working papers 486, Bank of England.
    30. Réka Albert & Hawoong Jeong & Albert-László Barabási, 2000. "Error and attack tolerance of complex networks," Nature, Nature, vol. 406(6794), pages 378-382, July.
    31. Raffestin, Louis, 2014. "Diversification and systemic risk," Journal of Banking & Finance, Elsevier, vol. 46(C), pages 85-106.
    32. Gai, Prasanna & Haldane, Andrew & Kapadia, Sujit, 2011. "Complexity, concentration and contagion," Journal of Monetary Economics, Elsevier, vol. 58(5), pages 453-470.
    33. Tasca, Paolo & Mavrodiev, Pavlin & Schweitzer, Frank, 2014. "Quantifying the impact of leveraging and diversification on systemic risk," Journal of Financial Stability, Elsevier, vol. 15(C), pages 43-52.
    34. Naimzada, Ahmad & Pireddu, Marina, 2014. "Dynamic behavior of product and stock markets with a varying degree of interaction," Economic Modelling, Elsevier, vol. 41(C), pages 191-197.
    35. Fabio Caccioli & Thomas A. Catanach & J. Doyne Farmer, 2012. "Heterogeneity, Correlations And Financial Contagion," Advances in Complex Systems (ACS), World Scientific Publishing Co. Pte. Ltd., vol. 15(supp0), pages 1-15.
    36. Caccioli, Fabio & Shrestha, Munik & Moore, Cristopher & Farmer, J. Doyne, 2014. "Stability analysis of financial contagion due to overlapping portfolios," Journal of Banking & Finance, Elsevier, vol. 46(C), pages 233-245.
    37. Lengnick, Matthias & Wohltmann, Hans-Werner, 2016. "Optimal monetary policy in a new Keynesian model with animal spirits and financial markets," Journal of Economic Dynamics and Control, Elsevier, vol. 64(C), pages 148-165.
    38. Gualdi, Stanislao & Tarzia, Marco & Zamponi, Francesco & Bouchaud, Jean-Philippe, 2015. "Tipping points in macroeconomic agent-based models," Journal of Economic Dynamics and Control, Elsevier, vol. 50(C), pages 29-61.
    39. Martinez-Jaramillo, Serafin & Alexandrova-Kabadjova, Biliana & Bravo-Benitez, Bernardo & Solórzano-Margain, Juan Pablo, 2014. "An empirical study of the Mexican banking system’s network and its implications for systemic risk," Journal of Economic Dynamics and Control, Elsevier, vol. 40(C), pages 242-265.
    40. Wagner, Wolf, 2008. "The homogenization of the financial system and financial crises," Journal of Financial Intermediation, Elsevier, vol. 17(3), pages 330-356, July.
    41. Bartram, Sohnke M. & Brown, Gregory W. & Hund, John E., 2007. "Estimating systemic risk in the international financial system," Journal of Financial Economics, Elsevier, vol. 86(3), pages 835-869, December.
    42. Brooke, Martin & Bush, Oliver & Edwards, Robert & Ellis, Jas & Francis, Bill & Harimohan, Rashmi & Neiss, Katharine & Siegert, Caspar, 2015. "Financial Stability Paper No. 35: Measuring the macroeconomic costs and benefits of higher UK bank capital requirements -," Bank of England Financial Stability Papers 35, Bank of England.
    43. De Grauwe, Paul & Macchiarelli, Corrado, 2015. "Animal spirits and credit cycles," Journal of Economic Dynamics and Control, Elsevier, vol. 59(C), pages 95-117.
    44. Wolf Wagner, 2011. "Systemic Liquidation Risk and the Diversity–Diversification Trade‐Off," Journal of Finance, American Finance Association, vol. 66(4), pages 1141-1175, August.
    45. Furfine, Craig H, 2003. "Interbank Exposures: Quantifying the Risk of Contagion," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 35(1), pages 111-128, February.
    46. Ferri, Giovanni & Messori, Marcello, 2000. "Bank-firm relationships and allocative efficiency in Northeastern and Central Italy and in the South," Journal of Banking & Finance, Elsevier, vol. 24(6), pages 1067-1095, June.
    47. Sebastian Poledna & Stefan Thurner, 2016. "Elimination of systemic risk in financial networks by means of a systemic risk transaction tax," Quantitative Finance, Taylor & Francis Journals, vol. 16(10), pages 1599-1613, October.
    48. Frank Westerhoff, 2012. "Interactions between the Real Economy and the Stock Market: A Simple Agent-Based Approach," Discrete Dynamics in Nature and Society, Hindawi, vol. 2012, pages 1-21, July.
    49. Battiston, Stefano & Gatti, Domenico Delli & Gallegati, Mauro & Greenwald, Bruce & Stiglitz, Joseph E., 2012. "Default cascades: When does risk diversification increase stability?," Journal of Financial Stability, Elsevier, vol. 8(3), pages 138-149.
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