TY - UNPD A1 - Bluhm, Marcel T1 - Interbank funding as insurance mechanism for (persistent) liquidity shocks T2 - SAFE working paper series ; No. 117 N2 - The interbank market is important for the efficient functioning of the financial system, transmission of monetary policy and therefore ultimately the real economy. In particular, it facilitates banks' liquidity management. This paper aims at extending the literature which views interbank markets as mutual liquidity insurance mechanism by taking into account persistence of liquidity shocks. Following a theory of long-term interbank funding a financial system which is modeled as a micro-founded agent based complex network interacting with a real economic sector is developed. The model features interbank funding as an over-the-counter phenomenon and realistically replicates financial system phenomena of network formation, monetary policy transmission and endogenous money creation. The framework is used to carry out an optimal policy analysis in which the policymaker maximizes real activity via choosing the optimal interest rate in a trade-off between loan supply and financial fragility. It is shown that the interbank market renders the financial system more efficient relative to a setting without mutual insurance against persistent liquidity shocks and therefore plays a crucial role for welfare. T3 - SAFE working paper - 117 KW - financial fragility KW - interbank market KW - liquidity KW - maturity KW - network model Y1 - 2015 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/38656 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-386562 UR - http://ssrn.com/abstract=2690137 PB - SAFE CY - Frankfurt am Main ER -