Monetary policy implementation in an interbank network: effects on systemic risk : [version 26 march 2014]

  • This paper makes a conceptual contribution to the effect of monetary policy on financial stability. We develop a microfounded network model with endogenous network formation to analyze the impact of central banks' monetary policy interventions on systemic risk. Banks choose their portfolio, including their borrowing and lending decisions on the interbank market, to maximize profit subject to regulatory constraints in an asset-liability framework. Systemic risk arises in the form of multiple bank defaults driven by common shock exposure on asset markets, direct contagion via the interbank market, and firesale spirals. The central bank injects or withdraws liquidity on the interbank markets to achieve its desired interest rate target. A tension arises between the beneficial effects of stabilized interest rates and increased loan volume and the detrimental effects of higher risk taking incentives. We find that central bank supply of liquidity quite generally increases systemic risk.

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Author:Marcel Bluhm, Ester FaiaGND, Jan Pieter KrahnenORCiDGND
Parent Title (German):SAFE working paper series ; No. 46
Series (Serial Number):SAFE working paper series (46)
Place of publication:Frankfurt am Main
Document Type:Working Paper
Year of Completion:2014
Year of first Publication:2014
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2014/05/30
Issue:version 26 march 2014
Page Number:43
Institutes:Wirtschaftswissenschaften / Wirtschaftswissenschaften
Wissenschaftliche Zentren und koordinierte Programme / House of Finance (HoF)
Wissenschaftliche Zentren und koordinierte Programme / Center for Financial Studies (CFS)
Wissenschaftliche Zentren und koordinierte Programme / Sustainable Architecture for Finance in Europe (SAFE)
Dewey Decimal Classification:3 Sozialwissenschaften / 33 Wirtschaft / 330 Wirtschaft
Licence (German):License LogoDeutsches Urheberrecht