Số 226 | Tháng 01/2025
Cạnh tranh và ổn định ngân hàng: Mối quan hệ phi tuyến tính?
Nguyễn Xuân Nhật, Lê Hoàng Anh, Lê Đình Hạc
Tóm tắt:
Nghiên cứu này đánh giá tác động của cạnh tranh đến sự ổn định ngân hàng (OĐNH) trong giai đoạn 2005–2022 của 30 ngân hàng thương mại (NHTM) Việt Nam. Chỉ số Lerner được dùng để đo lường cạnh tranh của các ngân hàng và hai loại Zscore (Zroa và Zroe) đại diện cho sự ổn định của ngân hàng. SGMM được áp dụng để ước tính các mô hình dựa trên dữ liệu bảng và kết quả hồi quy cho thấy tồn tại mối quan hệ hình chữ U ngược giữa cạnh tranh và sự OĐNH với điểm uốn mà tại đó chỉ số Lerner khoảng 0,13. Các yếu tố phản ánh đặc điểm riêng của mỗi ngân hàng và các yếu tố kinh tế vĩ mô cũng có ảnh hưởng đến sự ổn định của ngân hàng. Bằng chứng thực nghiệm trong nghiên cứu này có thể giúp các cơ quan quản lý và các NHTM Việt Nam xây dựng các chính sách quản lý và chiến lược kinh doanh nhằm duy trì mức độ cạnh tranh ở ngưỡng tối ưu giúp tăng cường cho sự ổn định của các ngân hàng.
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Competition and Banking Stability: A Nonlinear Relationship?
Abstract:
This paper examines the impact of competition on banking stability in 30 Vietnamese commercial banks from 2005 to 2022. The Lerner index is employed to measure bank competition, while banking stability is assessed using two Z-score indicators (ZROA and ZROE). Applying the System GMM (SGMM) method to panel data, the study finds an inverted U-shaped relationship between competition and banking stability, with an inflection point at a Lerner index of approximately 0.13. Additionally, bank-specific characteristics and macroeconomic factors significantly influence banking stability. These findings offer valuable insights for regulators and Vietnamese commercial banks in formulating policies and strategies to maintain optimal competition levels, thereby enhancing banking stability.