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Stress testing effects on portfolio similarities among large US Banks

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Abstract

We use an expansive regulatory loan-level dataset to analyze how the portfolios of the largest US banks have evolved since 2011. In particular, we analyze how the commercial and industrial and commercial real estate loan portfolios have changed in response to stress-testing requirements stipulated in the 2010 Dodd-Frank Act. We find that the largest US banks, which are subject to stress testing, have become more similar since the current form of the stress testing was implemented in 2011. We also find that banks with poor stress test results tend to adjust their portfolios in a way that makes them more similar to the portfolios of banks that performed well in the stress testing. In general, stress testing has resulted in more diversified bank portfolios in terms of sectoral and regional distributions. However, we also find that all the large US banks diversified in a similar way, creating a more concentrated systemic portfolio in the aggregate.

Suggested Citation

  • Falk Bräuning & José Fillat, 2019. "Stress testing effects on portfolio similarities among large US Banks," Current Policy Perspectives 19-1, Federal Reserve Bank of Boston.
  • Handle: RePEc:fip:fedbcq:2019_001
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    Citations

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    Cited by:

    1. Takeo Hoshi & Ke Wang, 2021. "Bank Regulatory Reforms and Declining Diversity of Bank Credit Allocation," CARF F-Series CARF-F-506, Center for Advanced Research in Finance, Faculty of Economics, The University of Tokyo.
    2. Böhnke, Victoria & Ongena, Steven & Paraschiv, Florentina & Reite, Endre J., 2023. "Back to the roots of internal credit risk models: Does risk explain why banks' risk-weighted asset levels converge over time?," Journal of Banking & Finance, Elsevier, vol. 156(C).
    3. Rhee, Keeyoung & Dogra, Keshav, 2024. "Stress tests and model monoculture," Journal of Financial Economics, Elsevier, vol. 152(C).

    More about this item

    Keywords

    concentration; systemic risk; portfolio similarity; stress tests; bank correlations;
    All these keywords.

    JEL classification:

    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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