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Diversification and Systemic Risk: A Financial Network Perspective

Author

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  • Rüdiger Frey

    (Department of Finance, Accounting and Statistics, Vienna University of Economics and Business; 1020 Wien, Austria
    These authors contributed equally to this work.)

  • Juraj Hledik

    (Department of Finance, Accounting and Statistics, Vienna University of Economics and Business; 1020 Wien, Austria
    These authors contributed equally to this work.)

Abstract

In this paper, we study the implications of diversification in the asset portfolios of banks for financial stability and systemic risk. Adding to the existing literature, we analyse this issue in a network model of the interbank market. We carry out a simulation study that determines the probability of a systemic crisis in the banking network as a function of both the level of diversification, and the connectivity and structure of the financial network. In contrast to earlier studies we find that diversification at the level of individual banks may be beneficial for financial stability even if it does lead to a higher asset return correlation across banks.

Suggested Citation

  • Rüdiger Frey & Juraj Hledik, 2018. "Diversification and Systemic Risk: A Financial Network Perspective," Risks, MDPI, vol. 6(2), pages 1-11, May.
    • Handle: RePEc:gam:jrisks:v:6:y:2018:i:2:p:54-:d:146414
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    References listed on IDEAS

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    1. Hledik, Juraj & Rastelli, Riccardo, 2020. "A dynamic network model to measure exposure diversification in the Austrian interbank market," ESRB Working Paper Series 109, European Systemic Risk Board.
    2. Rudiger Frey & Theresa Traxler, 2024. "Playing with Fire? A Mean Field Game Analysis of Fire Sales and Systemic Risk under Regulatory Capital Constraints," Papers 2406.17528, arXiv.org.
    3. Marina Dolfin & Damian Knopoff & Michele Limosani & Maria Gabriella Xibilia, 2019. "Credit Risk Contagion and Systemic Risk on Networks," Mathematics, MDPI, vol. 7(8), pages 1-16, August.
    4. Nils Detering & Thilo Meyer-Brandis & Konstantinos Panagiotou & Daniel Ritter, 2020. "Suffocating Fire Sales," Papers 2006.08110, arXiv.org, revised Nov 2021.
    5. Aida Barkauskaite & Ausrine Lakstutiene & Justyna Witkowska, 2018. "Measurement of Systemic Risk in a Common European Union Risk-Based Deposit Insurance System: Formal Necessity or Value-Adding Process?," Risks, MDPI, vol. 6(4), pages 1-21, December.

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