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Diversification and systemic risk

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  • Raffestin, Louis

Abstract

Portfolio diversification makes investors individually safer but creates connections between them through common asset holdings. Such connections create “endogenous covariances” between assets and investors, and enhance systemic risk by propagating shocks swiftly through the system. We provide a theoretical model in which shocks spread through constrained selling from N diversified portfolio investors in a network of asset holdings with home bias, and study the desirability of diversification by comparing the multivariate distribution of implied losses for every level of diversification. There may be a region on the parameter set for which the propagation effect dominates the individually safer one. We derive analytically the general element of the covariance between two assets i and j. We find agents may minimize their exposure to endogenous risk by spreading their wealth across more and more distant assets. The resulting network enhances systemic stability.

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  • Raffestin, Louis, 2014. "Diversification and systemic risk," Journal of Banking & Finance, Elsevier, vol. 46(C), pages 85-106.
  • Handle: RePEc:eee:jbfina:v:46:y:2014:i:c:p:85-106
    DOI: 10.1016/j.jbankfin.2014.05.014
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    as
    1. Wagner, Wolf, 2010. "Diversification at financial institutions and systemic crises," Journal of Financial Intermediation, Elsevier, vol. 19(3), pages 373-386, July.
    2. Greenwood, Robin & Landier, Augustin & Thesmar, David, 2015. "Vulnerable banks," Journal of Financial Economics, Elsevier, vol. 115(3), pages 471-485.
    3. John L. Evans & Stephen H. Archer, 1968. "Diversification And The Reduction Of Dispersion: An Empirical Analysis," Journal of Finance, American Finance Association, vol. 23(5), pages 761-767, December.
    4. Allen, Franklin & Babus, Ana & Carletti, Elena, 2012. "Asset commonality, debt maturity and systemic risk," Journal of Financial Economics, Elsevier, vol. 104(3), pages 519-534.
    5. Jon Danielsson & Hyun Song Shin & Jean-Pierre Zigrand, 2011. "Balance Sheet Capacity and Endogenous Risk," FMG Discussion Papers dp665, Financial Markets Group.
    6. Garry J. Schinasi & R. Todd Smith, 2000. "Portfolio Diversification, Leverage, and Financial Contagion," IMF Staff Papers, Palgrave Macmillan, vol. 47(2), pages 1-1.
    7. Allen, Franklin & Babus, Ana & Carletti, Elena, 2010. "Financial Connections and Systemic Risk," Working Papers 10-20, University of Pennsylvania, Wharton School, Weiss Center.
    8. Hamed Amini & Rama Cont & Andreea Minca, 2012. "Stress Testing The Resilience Of Financial Networks," World Scientific Book Chapters, in: Matheus R Grasselli & Lane P Hughston (ed.), Finance at Fields, chapter 2, pages 17-36, World Scientific Publishing Co. Pte. Ltd..
    9. Lagunoff, Roger & Schreft, Stacey L, 1999. "Financial Fragility with Rational And Irrational Exuberance," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 31(3), pages 531-560, August.
    10. Philip R. Lane & Gian Maria Milesi-Ferretti, 2008. "International Investment Patterns," The Review of Economics and Statistics, MIT Press, vol. 90(3), pages 538-549, August.
    11. Jiao, Jie & Qiu, Bin & Yan, An, 2013. "Diversification and heterogeneity of investor beliefs," Journal of Banking & Finance, Elsevier, vol. 37(9), pages 3435-3453.
    12. Goldstein, Itay & Pauzner, Ady, 2004. "Contagion of self-fulfilling financial crises due to diversification of investment portfolios," Journal of Economic Theory, Elsevier, vol. 119(1), pages 151-183, November.
    13. Bernanke, Ben S, 1983. "Nonmonetary Effects of the Financial Crisis in Propagation of the Great Depression," American Economic Review, American Economic Association, vol. 73(3), pages 257-276, June.
    14. Merton, Robert C, 1987. "A Simple Model of Capital Market Equilibrium with Incomplete Information," Journal of Finance, American Finance Association, vol. 42(3), pages 483-510, July.
    15. Calvo, Guillermo A. & Mendoza, Enrique G., 2000. "Rational contagion and the globalization of securities markets," Journal of International Economics, Elsevier, vol. 51(1), pages 79-113, June.
    16. Adrian, Tobias & Shin, Hyun Song, 2010. "Liquidity and leverage," Journal of Financial Intermediation, Elsevier, vol. 19(3), pages 418-437, July.
    17. Harry Markowitz, 1952. "Portfolio Selection," Journal of Finance, American Finance Association, vol. 7(1), pages 77-91, March.
    18. 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.
    19. Nikola Tarashev & Claudio Borio & Kostas Tsatsaronis, 2010. "Attributing systemic risk to individual institutions," BIS Working Papers 308, Bank for International Settlements.
    20. Andersen, Torben G. & Bollerslev, Tim & Diebold, Francis X. & Ebens, Heiko, 2001. "The distribution of realized stock return volatility," Journal of Financial Economics, Elsevier, vol. 61(1), pages 43-76, July.
    21. Ibragimov, Rustam & Jaffee, Dwight & Walden, Johan, 2011. "Diversification disasters," Journal of Financial Economics, Elsevier, vol. 99(2), pages 333-348, February.
    22. Nier, Erlend & Yang, Jing & Yorulmazer, Tanju & Alentorn, Amadeo, 2007. "Network models and financial stability," Journal of Economic Dynamics and Control, Elsevier, vol. 31(6), pages 2033-2060, June.
    23. Hamed Amini & Rama Cont & Andreea Minca, 2012. "Stress Testing The Resilience Of Financial Networks," International Journal of Theoretical and Applied Finance (IJTAF), World Scientific Publishing Co. Pte. Ltd., vol. 15(01), pages 1-20.
    24. Samuelson, Paul A., 1967. "General Proof that Diversification Pays*," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 2(1), pages 1-13, March.
    25. Hamed Amini & Rama Cont & Andreea Minca, 2012. "Stress testing the resilience of financial networks," Post-Print hal-00801538, HAL.
    26. Fiordelisi, Franco & Marqués-Ibañez, David, 2013. "Is bank default risk systematic?," Journal of Banking & Finance, Elsevier, vol. 37(6), pages 2000-2010.
    27. Albert S. Kyle & Wei Xiong, 2001. "Contagion as a Wealth Effect," Journal of Finance, American Finance Association, vol. 56(4), pages 1401-1440, August.
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    Cited by:

    1. Borbála Szüle, 2019. "Systemic Risk Dimensions in the Hungarian Banking and Insurance Sector," Public Finance Quarterly, State Audit Office of Hungary, vol. 64(2), pages 260-276.
    2. Jafarinejad, Mohammad & Ngo, Thanh & Escobari, Diego, 2018. "Disentangling the impacts of industrial and global diversification on firm risk," Global Finance Journal, Elsevier, vol. 37(C), pages 39-56.
    3. Franki, Vladimir & Višković, Alfredo, 2015. "Energy security, policy and technology in South East Europe: Presenting and applying an energy security index to Croatia," Energy, Elsevier, vol. 90(P1), pages 494-507.
    4. Kerstin Awiszus & Agostino Capponi & Stefan Weber, 2020. "Market Efficient Portfolios in a Systemic Economy," Papers 2003.10121, arXiv.org, revised May 2021.
    5. Konstantin Kosenko & Noam Michelson, 2018. "It Takes More than Two to Tango: Understanding the Dynamics behind Multiple Bank Lending and its Implications," Bank of Israel Working Papers 2018.11, Bank of Israel.
    6. Raffestin, Louis, 2017. "Do bond credit ratings lead to excess comovement?," Journal of Banking & Finance, Elsevier, vol. 85(C), pages 41-55.
    7. S Coleman & K Sirichand, 2015. "Investigating Multiple Changes in Persistence in International Yields," Economic Issues Journal Articles, Economic Issues, vol. 20(1), pages 65-90, March.
    8. Alin Marius Andrieş & Simona Nistor, 2018. "Systemic Risk and Foreign Currency Positions of Banks: Evidence from Emerging Europe," Eastern European Economics, Taylor & Francis Journals, vol. 56(5), pages 382-421, September.
    9. Yajing Huang & Taoxiong Liu, 2023. "Diversification and Systemic Risk of Networks Holding Common Assets," Computational Economics, Springer;Society for Computational Economics, vol. 61(1), pages 341-388, January.
    10. Kosenko, Konstantin & Michelson, Noam, 2022. "It takes more than two to tango: Multiple bank lending, asset commonality and risk," Journal of Financial Stability, Elsevier, vol. 61(C).
    11. Berdin, Elia & Sottocornola, Matteo, 2015. "Insurance activities and systemic risk," SAFE Working Paper Series 121, Leibniz Institute for Financial Research SAFE.
    12. Olessia CAILLÉ & Louis RAFFESTIN, 2018. "Cross-asset holdings and the resiliency of wholesale funding," LEO Working Papers / DR LEO 2628, Orleans Economics Laboratory / Laboratoire d'Economie d'Orleans (LEO), University of Orleans.
    13. Qin, Xiao & Zhou, Chunyang, 2019. "Financial structure and determinants of systemic risk contribution," Pacific-Basin Finance Journal, Elsevier, vol. 57(C).
    14. Berdin, Elia & Sottocornolay, Matteo, 2015. "Insurance activities and systemic risk," ICIR Working Paper Series 19/15, Goethe University Frankfurt, International Center for Insurance Regulation (ICIR).
    15. 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.
    16. Maghyereh, Aktham & Abdoh, Hussein & Al-Shboul, Mohammad, 2022. "Oil structural shocks, bank-level characteristics, and systemic risk: Evidence from dual banking systems," Economic Systems, Elsevier, vol. 46(4).

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    More about this item

    Keywords

    Systemic risk; Diversification; Circulant network; Circulant matrix; Fire sales;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • C65 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Miscellaneous Mathematical Tools

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