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Interbank borrowing and lending between financially constrained banks

Diemo Dietrich and Achim Hauck ()
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Achim Hauck: Nottingham Trent University

Economic Theory, 2020, vol. 70, issue 2, No 1, 347-385

Abstract: Abstract Some stylized facts about transactions among banks are not easily reconciled with coinsurance of short-term liquidity risks. In our model, interbank markets play a different role. We argue that lending to another bank can reduce a bank’s overall portfolio risk through diversification. If insolvency is costly, this diversification improves the interbank lender’s funding liquidity, boosting credit supply to nonbanks. However, diversification comes at an endogenous cost that depends on bank-specific factors of interbank borrower and lender. The model provides a framework for understanding the importance of interbank lending for aggregate credit supply and the stability of banking systems. The model’s predictions are consistent with evidence documented in the literature that other theories cannot consistently explain.

Keywords: Interbank lending; Bank credit supply; Bank stability (search for similar items in EconPapers)
JEL-codes: E5 G01 G21 (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s00199-019-01220-9

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