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WU YichangGraduate School of Business Administration / Division of Business AdministrationAssistant Professor
Research activity information
■ Award■ Paper
- Mar. 2025, 大阪府商工労働部『産開研論集』大阪府におけるインバウンドの回復と未来
- Lead, Elsevier BV, Oct. 2024, Pacific-Basin Finance Journal, 102554 - 102554[Refereed]Scientific journal
- Abstract This article examines the relationship between bank diversification and performance in the Japanese banking sector. We use panel data from 141 banks over the period 2000–2022 to investigate whether banks can improve profitability and reduce risk through diversification strategies. Our evidence shows that diversification can improve bank profitability at the cost of a decline in net interest margins, suggesting banks are using the interest business as a loss leader to promote other business lines. We find that asset diversification has a risk‐reducing effect, which supports the portfolio hypothesis. Some evidence also implies that there is a more complex nonlinear relationship. This can be partly attributed to bank type, as the diversification effects vary across different types of banks. Furthermore, the decomposition of non‐interest income reveals that fees and commissions negatively influence return on assets while simultaneously reducing bank risk.Lead, Wiley, Sep. 2024, International Review of Finance, 24(3) (3), 449 - 492[Refereed]Scientific journal
■ Lectures, oral presentations, etc.
- 日本ファイナンス学会第33回大会, Jun. 2025How does the market value bank complexity: Evidence from JapanOral presentation
- 日本金融学会2023秋季大会, Sep. 2023Economies of scope in the Japanese banking industry
- 日本ファイナンス学会第31回大会, May 2023Economies of scope in the Japanese banking industryOral presentation
- 日本ファイナンス学会第30回大会, Jun. 2022Bank diversification and performance: Empirical evidence from JapanOral presentation
■ Research Themes