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Systemic risk and bank consolidation: International evidence

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  • Weiß, Gregor N.F.
  • Neumann, Sascha
  • Bostandzic, Denefa

Abstract

This paper analyzes the systemic risk effects of bank mergers to test the “concentration-fragility” hypothesis. We use the marginal expected shortfall as well as the lower tail dependence between a bank’s stock returns and a relevant bank sector index to capture the merger-related change in an acquirer’s contribution to systemic risk. In our empirical analysis of a dataset of international domestic and cross-border mergers, we find clear evidence for a significant increase in the merging banks’, the combined banks’ as well as their competitors’ contribution to systemic risk following mergers, thus confirming the “concentration-fragility” hypothesis.

Suggested Citation

  • Weiß, Gregor N.F. & Neumann, Sascha & Bostandzic, Denefa, 2014. "Systemic risk and bank consolidation: International evidence," Journal of Banking & Finance, Elsevier, vol. 40(C), pages 165-181.
    • Handle: RePEc:eee:jbfina:v:40:y:2014:i:c:p:165-181
    DOI: 10.1016/j.jbankfin.2013.11.032
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    More about this item

    Keywords

    M&A; Banks; Consolidation; Systemic risk; Lower tail dependence; Marginal expected shortfall;
    All these keywords.

    JEL classification:

    • G01 - Financial Economics - - General - - - Financial Crises
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance

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