An Excursion-Theoretic Approach to Regulator's Bank Reorganization Problem

Masahiko Egami and Tadao Oryu

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Abstract: The importance of the global financial system cannot be exaggerated. When a large financial institution becomes problematic and is bailed out, that bank is often claimed as "too big to fail". On the other hand, to prevent bank's failure, regulatory authorities adopt the Prompt Corrective Action (PCA) against a bank that violates certain criteria, often measured by its leverage ratio. In this article, we provide a framework where one can analyze the cost and effect of PCA's. We model a large bank with deteriorating asset and regulatory actions attempting to prevent a failure. The model uses the excursion theory of Levy processes and finds an optimal leverage ratio that triggers a PCA. A nice feature includes it incorporates the fact that social cost associated with PCA's are be greatly affected by the size of banks subject to PCA's, so that one can see the cost of rescuing a bank "too big to fail".

Date: 2013-11
New Economics Papers: this item is included in nep-ban and nep-cba
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:1311.3019

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