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Bank Diversification, Performance, and Monetary Policy: A PRISMA 2020-Based Systematic Review and Bibliometric Analysis

Author

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  • Ven Phuoc Luu

    (Faculty of Finance and Banking, University of Economics and Law, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 70000, Vietnam
    Faculty of Economics and Business Administration, An Giang University, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 90000, Vietnam)

  • Duc Hong Thi Phan

    (Knowledge Bridge Research Institute (KBERI), Ho Chi Minh City 70000, Vietnam
    College of Business, RMIT University, Melbourne, VIC 3000, Australia)

  • Huy Quoc Bui

    (Faculty of Accountancy and Management, University Tunku Abdul Rahman, Kajang 43000, Malaysia)

Abstract

This study examines the influence of diversification on commercial bank performance, specifically considering the role of monetary policy and shifting macroeconomic conditions. PRISMA 2020-based systematic literature review was conducted using Scopus data from 2006–2025. Bibliometric analysis using VOSviewer 1.6.20 and RStudio 4.4.3 was employed to identify key themes and citation patterns. Findings are heterogeneous and context-dependent: diversification can improve profitability and valuations in some settings, yet may increase earnings volatility and reduce risk-adjusted performance in others. In particular, the impact of monetary policy is identified as significant yet mediated by broader macroeconomic factors. These insights assist bank managers in aligning strategies with economic landscapes and aid policymakers in designing regulations adaptive to macroeconomic fluctuations. This study contributes a comprehensive synthesis of diversification strategies, emphasizing the often-overlooked interplay with monetary policy and providing a future research agenda.

Suggested Citation

  • Ven Phuoc Luu & Duc Hong Thi Phan & Huy Quoc Bui, 2026. "Bank Diversification, Performance, and Monetary Policy: A PRISMA 2020-Based Systematic Review and Bibliometric Analysis," JRFM, MDPI, vol. 19(3), pages 1-21, March.
    • Handle: RePEc:gam:jjrfmx:v:19:y:2026:i:3:p:189-:d:1878460
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