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CoMap: mapping contagion in the euro area banking sector

Giovanni Covi (), Mehmet Ziya Gorpe and Christoffer Kok

No 2224, Working Paper Series from European Central Bank

Abstract: This paper presents a novel approach to investigate and model the network of euro area banks’ large exposures within the global banking system. Drawing on a unique dataset, the paper documents the degree of interconnectedness and systemic risk of the euro area banking system based on bilateral linkages. We then develop a Contagion Mapping (CoMap) methodology to study contagion potential of an exogenous default shock via counterparty credit and funding risks. We construct contagion and vulnerability indices measuring respectively the systemic importance of banks and their degree of fragility. Decomposing the results into the respective contributions of credit and funding shocks provides insights to the nature of contagion which can be used to calibrate bank-specific capital and liquidity requirements and large exposures limits. We find that tipping points shifting the euro area banking system from a less vulnerable state to a highly vulnerable state are a non-linear function of the combination of network structures and bank-specific characteristics. JEL Classification: D85, G17, G33, L14

Keywords: interconnectedness; large exposures; macroprudential policy; network analysis; stress test; systemic risk (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ban, nep-cba and nep-eec
Date: 2019-01
Note: 2330794
References: View references in EconPapers View complete reference list from CitEc
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Working Paper: CoMap: Mapping Contagion in the Euro Area Banking Sector (2019) Downloads
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Persistent link: https://EconPapers.repec.org/RePEc:ecb:ecbwps:20192224

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