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Banks and sovereign risk: A granular view

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  • Buch, Claudia M.
  • Koetter, Michael
  • Ohls, Jana

Abstract

We investigate the determinants of sovereign bond holdings of German banks and the implications of such holdings for bank risk. We use granular information on all German banks and all sovereign debt exposures in the years 2005–2013. As regards the determinants of sovereign bond holdings of banks, we find that these are larger for weakly capitalized banks, banks that are active on capital markets, and for large banks. Yet, only around two thirds of all German banks hold sovereign bonds. Macroeconomic fundamentals were significant drivers of sovereign bond holdings only after the collapse of Lehman Brothers. With the outbreak of the sovereign debt crisis, German banks reallocated their portfolios toward sovereigns with lower debt ratios and bonds with lower yields. With regard to the implications for bank risk, we find that low-risk government bonds decreased the risk of German banks, especially for savings and cooperative banks. Holdings of high-risk government bonds, in turn, increased the risk of commercial banks during the sovereign debt crisis.

Suggested Citation

  • Buch, Claudia M. & Koetter, Michael & Ohls, Jana, 2016. "Banks and sovereign risk: A granular view," Journal of Financial Stability, Elsevier, vol. 25(C), pages 1-15.
  • Handle: RePEc:eee:finsta:v:25:y:2016:i:c:p:1-15
    DOI: 10.1016/j.jfs.2016.05.002
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    More about this item

    Keywords

    Sovereign debt; Bank-level heterogeneity; Bank risk;
    All these keywords.

    JEL classification:

    • G01 - Financial Economics - - General - - - Financial Crises
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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