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Bank networks : contagion, systemic risk and prudential policy
- We present a network model of the interbank market in which optimizing risk averse banks lend to each other and invest in non-liquid assets. Market clearing takes place through a tâtonnement process which yields the equilibrium price, while traded quantities are determined by means of a matching algorithm. We compare three alternative matching algorithms: maximum entropy, closest matching and random matching. Contagion occurs through liquidity hoarding, interbank interlinkages and fire sale externalities. The resulting network configurations exhibits a core-periphery structure, dis-assortative behavior and low clustering coefficient. We measure systemic importance by means of network centrality and input-output metrics and the contribution of systemic risk by means of Shapley values. Within this framework we analyze the effects of prudential policies on the stability/efficiency trade-off. Liquidity requirements unequivocally decrease systemic risk but at the cost of lower efficiency (measured by aggregate investment in non-liquid assets); equity requirements tend to reduce risk (hence increase stability) without reducing significantly overall investment.
Verfasserangaben: | Iñaki Aldasoro, Domenico Delli GattiORCiDGND, Ester FaiaGND |
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URN: | urn:nbn:de:hebis:30:3-371190 |
URL: | http://ssrn.com/abstract=2572877 |
Titel des übergeordneten Werkes (Englisch): | SAFE working paper series ; No. 87 |
Schriftenreihe (Bandnummer): | SAFE working paper (87) |
Verlag: | SAFE |
Verlagsort: | Frankfurt am Main |
Dokumentart: | Arbeitspapier |
Sprache: | Englisch |
Datum der Veröffentlichung (online): | 05.03.2015 |
Jahr der Erstveröffentlichung: | 2015 |
Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Datum der Freischaltung: | 10.03.2015 |
Freies Schlagwort / Tag: | banking networks; centrality metrics; contagion; fire sales; prudential regulation; systemic risk |
Ausgabe / Heft: | January 2015 |
Seitenzahl: | 53 |
HeBIS-PPN: | 357671457 |
Institute: | 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) | |
DDC-Klassifikation: | 3 Sozialwissenschaften / 33 Wirtschaft / 330 Wirtschaft |
Sammlungen: | Universitätspublikationen |
Lizenz (Deutsch): | Deutsches Urheberrecht |