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Sectoral interconnectedness in the euro area economies: insights from network analysis

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  • Sánchez Serrano, Antonio

Abstract

Using who-to-whom data for the last quarter of 2024, I build networks of financial interconnections in the euro area countries. After representing them in chord diagrams, I consider centrality metrics and find that banks dominate, with four exceptions: Cyprus, Ireland, Luxembourg and Malta. In these countries, other financial institutions and investment funds are at the core, with limited links to domestic sectors and strong ones with the rest of the world. A comparison across countries reveals substantial homogeneity between networks in the sixteen euro area countries and large differences with Cyprus, Ireland, Luxembourg and Malta. For each country, two communities are identified, one focused on the real economy and including banks, and the second comprising other financial intermediaries and the rest of the world. The consistent mapping of sectoral linkages and the accompanying descriptive analysis can be useful for policymakers and may also serve as platform for further analytical work. JEL Classification: D85, G10, G20, G51

Suggested Citation

  • Sánchez Serrano, Antonio, 2026. "Sectoral interconnectedness in the euro area economies: insights from network analysis," Working Paper Series 3223, European Central Bank.
  • Handle: RePEc:ecb:ecbwps:20263223
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    References listed on IDEAS

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    1. repec:srk:srkops:201303 is not listed on IDEAS
    2. Martín Saldias & Sophia Mizinski, 2025. "Sectoral Interconnectedness in Portugal and the Role of Non-Bank Financial Institutions," Working Papers w202521, Banco de Portugal, Economics and Research Department.
    3. Antonio Coppola & Matteo Maggiori & Brent Neiman & Jesse Schreger, 2021. "Redrawing the Map of Global Capital Flows: The Role of Cross-Border Financing and Tax Havens," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 136(3), pages 1499-1556.
    4. Prasanna Gai & Sujit Kapadia, 2010. "Contagion in financial networks," Bank of England working papers 383, Bank of England.
    5. Levent Altinoglu & Joseph E. Stiglitz, 2023. "Collective Moral Hazard and the Interbank Market," American Economic Journal: Macroeconomics, American Economic Association, vol. 15(2), pages 35-64, April.
    6. Daron Acemoglu & Asuman Ozdaglar & Alireza Tahbaz-Salehi, 2015. "Systemic Risk and Stability in Financial Networks," American Economic Review, American Economic Association, vol. 105(2), pages 564-608, February.
    7. Matthew O. Jackson & Agathe Pernoud, 2021. "Systemic Risk in Financial Networks: A Survey," Annual Review of Economics, Annual Reviews, vol. 13(1), pages 171-202, August.
    8. Ms. Hiroko Oura, 2022. "Systemwide Liquidity Stress Testing Tool," IMF Working Papers 2022/252, International Monetary Fund.
    9. Acharya, Viral & Cetorelli, Nicola & Tuckman, Bruce, 2024. "Where Do Banks End and NBFIs Begin?," CEPR Discussion Papers 18939, Centre for Economic Policy Research.
    10. Marco A. Espinosa‐Vega & Juan Solé, 2011. "Cross‐border financial surveillance: a network perspective," Journal of Financial Economic Policy, Emerald Group Publishing Limited, vol. 3(3), pages 182-205, August.
    11. Antonio Sánchez Serrano, 2025. "A map of the Spanish financial system: A tool for analysing interconnectedness and stress transmission channels," Financial Stability Review, Banco de España, issue Spring.
    12. Clerc, Laurent & Giovannini, Alberto & Langfield, Sam & Peltonen, Tuomas A. & Portes, Richard & Scheicher, Martin, 2016. "Indirect contagion: the policy problem," ESRB Occasional Paper Series 9, European Systemic Risk Board.
    13. Peralta, Gustavo & Crisóstomo, Ricardo, 2016. "Financial contagion with spillover effects: a multiplex network approach," ESRB Working Paper Series 32, European Systemic Risk Board.
    14. Laurent Clerc & Alberto Giovannini & Sam Langfield & Tuomas Peltonen & Richard Portes & Martin Scheicher, 2016. "Indirect contagion: the policy problem," ESRB Occasional Paper Series 09, European Systemic Risk Board.
    15. Sánchez Serrano, Antonio & Andersen, Isabel, 2024. "A map of the euro area financial system," ESRB Occasional Paper Series 26, European Systemic Risk Board.
    16. Tuomas Antero Peltonen & Michela Rancan & Peter Sarlin, 2019. "Interconnectedness of the banking sector as a vulnerability to crises," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 24(2), pages 963-990, April.
    17. Castrén, Olli & Rancan, Michela, 2014. "Macro-Networks: An application to euro area financial accounts," Journal of Banking & Finance, Elsevier, vol. 46(C), pages 43-58.
    18. Foglia, Matteo & Pacelli, Vincenzo & Wang, Gang-Jin, 2023. "Systemic risk propagation in the Eurozone: A multilayer network approach," International Review of Economics & Finance, Elsevier, vol. 88(C), pages 332-346.
    19. Sánchez Serrano, Antonio, 2025. "Three extensions of the map of the euro area financial system," ESRB Occasional Paper Series 27, European Systemic Risk Board.
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    Keywords

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    JEL classification:

    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G51 - Financial Economics - - Household Finance - - - Household Savings, Borrowing, Debt, and Wealth

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