Munich Personal RePEc Archive

How does the stock market value bank diversification? Empirical evidence from Japanese banks

Sawada, Michiru (2011): How does the stock market value bank diversification? Empirical evidence from Japanese banks.

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Abstract

This paper empirically examines the effect of bank’s revenue diversification across different activities on the stock-based return and risk measures using data on the Japanese banking sector. In the analyses, we measure non-interest income share as a measure for revenue diversification of banks. These analyses confirm the positive effect of revenue diversification by increasing non-interest income share on the franchise values of banks, while there is no strong evidence that it reduce bank risks. In contrast, when non-interest income is broken down into its constituent parts—fee income, trading income and other non-interest income—we find that a shift toward fee income-generating business decreases all types of risks (systematic risk, idiosyncratic risk, and total risk). Furthermore, we find that the effects of bank’s revenue diversification on franchise value and risks are contingent on organizational forms and performance of traditional banking business.

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