Financial bridges and network communities

  • The paper analyses the contagion channels of the European financial system through the stochastic block model (SBM). The model groups homogeneous connectivity patterns among the financial institutions and describes the shock transmission mechanisms of the financial networks in a compact way. We analyse the global financial crisis and European sovereign debt crisis and show that the network exhibits a strong community structure with two main blocks acting as shock spreader and receiver, respectively. Moreover, we provide evidence of the prominent role played by insurances in the spread of systemic risk in both crises. Finally, we demonstrate that policy interventions focused on institutions with inter-community linkages (community bridges) are more effective than the ones based on the classical connectedness measures and represents consequently, a better early warning indicator in predicting future financial losses.

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Author:Roberto Casarin, Michele CostolaORCiD, Erdem Yenerdag
Parent Title (English):SAFE working paper series ; No. 208
Series (Serial Number):SAFE working paper series (208)
Place of publication:Frankfurt am Main
Document Type:Working Paper
Year of Completion:2018
Year of first Publication:2018
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2018/06/12
Tag:Financial Crises; Financial Institutions; Network Communities; Systemic Risk
Issue:This version: May 6, 2018
Page Number:46
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
JEL-Classification:C Mathematical and Quantitative Methods / C5 Econometric Modeling / C51 Model Construction and Estimation
Licence (German):License LogoDeutsches Urheberrecht