books

Liquidity Coinsurance and Bank Capital

Source:
Journal of Money, Credit and Banking, Vol. 46, Issue 2-3, pp. 409-443
Year:
2014
Authors:
Fabio Castiglionesi,
Fabio Feriozzi,
Gyongyi Loranth,
Loriana Pelizzon
Reseach Area:
Financial Institutions
Abstract:

Banks can deal with their liquidity risk by holding liquid assets (self-insurance), by participating in interbank markets (coinsurance), or by using flexible financing instruments, such as bank capital (risk-sharing). We use a simple model to show that undiversifiable liquidity risk, i.e. the liquidity risk that banks are unable to coinsure on interbank markets, represents an important risk factor affecting their capital structures. Banks facing higher undiversifiable liquidity risk hold more capital. We posit that empirically banks that are more exposed to undiversifiable liquidity risk are less active on interbank markets. Therefore, we test for the existence of a negative relationship between bank capital and interbank market activity and find support in a large sample of U.S. commercial banks.

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