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Bank’s strategic interaction, adverse price dynamics and systemic liquidity risk

Author

Listed:
  • Ulrich Krüger

    (Deutsche Bundesbank)

  • Christoph Roling

    (Deutsche Bundesbank)

  • Leonid Silbermann

    (Deutsche Bundesbank)

  • Lui-Hsian Wong

    (Deutsche Bundesbank)

Abstract

When a widespread funding shock hits the banking system, banks may engage in strategic behaviour to deal with funding shortages by a pre-emptive disposal of assets. Alternatively, they may adopt a more cautious strategy to mitigate price reactions, thereby distributing the assets sales into smaller portions over time. We model banks’ optimal behaviour using standard optimisation techniques and show that an equilibrium always exits in a stylised setting. A numerical analysis to approximate the equilibrium supplements the theoretical part. The implementation delivers two liquidity measures for the German banking system: the Systemic Liquidity Buffer and the Systemic Liquidity Shortfall. These measures are more informative about systemic liquidity risk than regulatory liquidity measures, such as the LCR, because they model adverse, nonlinear price dynamics in a more realistic way. Our approach is applied to different stress scenarios.

Suggested Citation

  • Ulrich Krüger & Christoph Roling & Leonid Silbermann & Lui-Hsian Wong, 2025. "Bank’s strategic interaction, adverse price dynamics and systemic liquidity risk," Journal of Banking Regulation, Palgrave Macmillan, vol. 26(1), pages 1-24, March.
    • Handle: RePEc:pal:jbkreg:v:26:y:2025:i:1:d:10.1057_s41261-024-00240-3
    DOI: 10.1057/s41261-024-00240-3
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    More about this item

    Keywords

    Systemic liquidity risk; Market liquidity; Funding liquidity; Contagion; Fire sales;
    All these keywords.

    JEL classification:

    • C63 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computational Techniques
    • G01 - Financial Economics - - General - - - Financial Crises
    • G17 - Financial Economics - - General Financial Markets - - - Financial Forecasting and Simulation
    • 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

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