Financial Connections and Systemic Risk
European Banking Center Discussion Paper No. 2010-23S
CentER Discussion Paper Series No. 2010-88S
43 Pages Posted: 28 Aug 2010
There are 3 versions of this paper
Financial Connections and Systemic Risk
Financial Connections and Systemic Risk
Date Written: July 10, 2010
Abstract
We develop a model where institutions form connections through swaps of projects in order to diversify their individual risk. These connections lead to two different network structures. In a clustered network groups of financial institutions hold identical portfolios and default together. In an unclustered network defaults are more dispersed. With long term finance welfare is the same in both networks. In contrast, when short term finance is used, the network structure matters. Upon the arrival of a signal about banks’ future defaults, investors update their expectations of bank solvency. If their expectations are low, they do not roll over the debt and there is systemic risk in that all institutions are early liquidated. We compare investors’ rollover decisions and welfare in the two networks.
Keywords: Financial networks, diversification, short term finance, rollover risk
JEL Classification: G01, G21
Suggested Citation: Suggested Citation
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