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Are banking and capital markets union complements? Evidence from channels of risk sharing in the eurozone

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  • Mathias Hoffmann
  • Egor Maslov
  • Bent E. Sørensen
  • Iryna Stewen

Abstract

EMU was a major step towards deeper financial integration among member states. However, diversification of equity portfolios remained limited while banking integration surged. We argue that the nature of banking integration is of first-order importance for understanding the patterns and channels of risk sharing. While EMU was associated with the creation of an integrated interbank market, as witnessed by an explosion in cross-border interbank flows, “real” banking integration (in terms of cross-border bank-to-real sector flows or banking-consolidation) remained limited. But we find that real banking integration is associated with more risk sharing, while indirect integration via interbank flows is not. Further, indirect banking integration proved to be highly procyclical, which contributed to the freeze in risk sharing after 2008. Based on this evidence, and a stylized DSGE model that allows us to explain these patterns in the data, we discuss implications for banking union. Our results show that real banking integration and capital market union are complements and robust risk sharing in the EMU requires both.

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  • Mathias Hoffmann & Egor Maslov & Bent E. Sørensen & Iryna Stewen, 2018. "Are banking and capital markets union complements? Evidence from channels of risk sharing in the eurozone," ECON - Working Papers 311, Department of Economics - University of Zurich.
  • Handle: RePEc:zur:econwp:311
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    2. Martinez, Joseba & Sihvonen, Markus, 2019. "Does a Currency Union Need a Capital Market Union? Risk Sharing via Banks and Markets," CEPR Discussion Papers 14220, C.E.P.R. Discussion Papers.
    3. Badarau, Cristina & Carias, Marcos & Figuet, Jean-Marc, 2020. "Cross-border spillovers of macroprudential policy in the Euro area," The Quarterly Review of Economics and Finance, Elsevier, vol. 77(C), pages 1-13.
    4. Herzberg, Valerie & McQuade, Peter, 2018. "International bank flows and bank business models since the crisis," Financial Stability Notes 5/FS/18, Central Bank of Ireland.
    5. Jokivuolle, Esa & Virén, Matti, 2019. "Cross-border loan portfolio diversification, capital requirements, and the European Banking Union," BoF Economics Review 3/2019, Bank of Finland.
    6. Martinez, Joseba & Philippon, Thomas & Sihvonen, Markus, 2022. "Does a currency union need a capital market union?," Journal of International Economics, Elsevier, vol. 139(C).
    7. Peter Dreuw, 2023. "Structural time series models and synthetic controls—assessing the impact of the euro adoption," Empirical Economics, Springer, vol. 64(2), pages 681-725, February.
    8. Herzberg, Valerie & McQuade, Peter, 2018. "International bank flows and bank business models since the crisis," Financial Stability Notes 05-18, Central Bank of Ireland.

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    JEL classification:

    • F15 - International Economics - - Trade - - - Economic Integration
    • F36 - International Economics - - International Finance - - - Financial Aspects of Economic Integration
    • F45 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Macroeconomic Issues of Monetary Unions

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