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The Impact of Exogenous Liquidity Shocks on Banks

Working Paper HEIDWP01-2019 | Miguel Sarmiento

Abstract
This  paper  examines  the  impact  of  exogenous  liquidity  shocks  in  the  unsecured  interbank  market.
We  evaluate  the  effects  of  idiosyncratic  liquidity  shocks — arising  from  deposits  outflow  at  the bank  level — and  of  the  aggregate  liquidity  shock  related  to  the  U.S.  tapering  observed  between May  and  September  of  2013.  We  find  that  both  liquidity  shocks  are  associated  with  higher
interbank   loan  prices,  albeit  the  magnitude  of  the  overprice  and  the  impact  on  the  access  to interbank liquidity differ depending  on  the  borrower-specific  characteristics.  More  capitalized  and
liquid  banks  tend  to  pay  less  for  liquidity
— concurrent  with  evidence  on  market  discipline — but also  can  absorb  better  the  impact  of  exogenous  liquidity  shocks,  suggesting  benefits  from  capital and  liquidity  ratios.  Our  results  suggest  that  lending  relationships  can  alleviate  funding  costs during  idiosyncratic  liquidity  shocks,
 while central bank liquidity contributes to smooth the impact of  aggregate  liquidity  shocks.  Results  have  implications  for  both  financial  stability  and  monetary policy transmission.     
Key  Words:
interbank  markets;  market  discipline;  liquidity  shocks;  monetary  policy;
financial stability.
JEL Codes:
 E43, E58, L14, G12, G21

International Economics

The Impact of Exogenous Liquidity Shocks on Banks Funding Costs: Microevidence from the Unsecured Interbank Market