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Network Risk and Key Players: A Structural Analysis of Interbank Liquidity

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  • Denbee, Edward

    (Bank of England)

  • Julliard, Christian

    (London School of Economics and Political Science)

  • Li, Ye

    (OH State U)

  • Yuan, Kathy

    (London School of Economics and Political Science)

Abstract

We estimate the liquidity multiplier and individual banks' contribution to systemic liquidity risk in an interbank network using a structural model. Banks borrow liquidity from neighbours and update their valuation based on neighbours' actions. When the former (latter) motive dominates, the equilibrium exhibits strategic substitution (complementarity) of liquidity holdings, and a reduced (increased) liquidity multiplier dampening (amplifying) shocks. Empirically, we find substantial and procyclical network-generated risks driven mostly by changes of equilibrium type rather than network topology. We identify the banks that generate most systemic risk and solve the planner's problem, providing guidance to macro-prudential policies.

Suggested Citation

  • Denbee, Edward & Julliard, Christian & Li, Ye & Yuan, Kathy, 2018. "Network Risk and Key Players: A Structural Analysis of Interbank Liquidity," Working Paper Series 2018-11, Ohio State University, Charles A. Dice Center for Research in Financial Economics.
    • Handle: RePEc:ecl:ohidic:2018-11
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    JEL classification:

    • 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
    • C31 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models; Quantile Regressions; Social Interaction Models
    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation

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