Bank Capital Buffer and Liquidity: Evidence from US and European Publicly Traded Banks
61 Pages Posted: 17 Sep 2012
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Bank Regulatory Capital and Liquidity: Evidence from U.S. and European Publicly Traded Banks
Date Written: March 1, 2012
Abstract
The theory of financial intermediation highlights various channels through which capital and liquidity are interrelated. Using a simultaneous-equations framework, we investigate the relationship between bank capital buffer and liquidity for European and US publicly traded commercial banks from 2000 to 2008. Previous research studying the determinants of bank capital buffer has neglected the role of liquidity. On the whole, we find that banks do not strengthen their capital buffer when they face higher illiquidity as defined in the Basel III accords or when they create more liquidity as measured by Berger and Bouwman (2009). However, considering other measures of illiquidity that focus more closely on core deposits in the US, our results show that, except for very large institutions, banks do actually build larger capital buffers when they are exposed to higher illiquidity. Our empirical investigation supports the need to implement minimum liquidity ratios concomitantly to capital ratios, as stressed by the Basel Committee; but, our findings also shed light on the need to further clarify how to define and measure illiquidity and also on how to consider very large banking institutions which behave differently than smaller ones.
Keywords: Bank Regulatory Capital Buffer, Liquidity, Bank Regulation
JEL Classification: G21, G28
Suggested Citation: Suggested Citation
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