Banking fragility and liquidity creation: options as a substitute for deposits |
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Authors: | Wolf Wagner |
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Institution: | (1) TILEC, CentER and Department of Economics, Tilburg University, Tilburg, The Netherlands |
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Abstract: | Diamond and Rajan (J Finance 55:2431–2465, 2000; Am Econ Rev Papers Proc 91:422–425, 2001a; Carnegie–Rochester Conf Series
Public Policy 54:37–71, 2001b; J Pol Econ 109:287–327, 2001c) have shown in a series of papers that it is precisely the fragility
of their capital structure which allows banks to create liquidity. This is because the threat of runs by depositors forces
bankers to extract full repayment on otherwise illiquid assets. This result has important implications for financial regulation,
such as for capital requirements and deposit insurance. This note shows that put options held by bank owners dominate deposit
financing in that they also discipline bankers but do not give rise to inefficient runs. Fragility is thus not necessary for
liquidity creation in the Diamond–Rajan framework.
This paper has substantially benefitted from the comments and suggestions of an anonymous referee. |
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Keywords: | Banking fragility Liquidity creation Put options |
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