Tóm tắt:
Mục tiêu nghiên cứu: Nghiên cứu này xem xét tác động của biến động tăng trưởng (BĐTT) đến hành vi thuộc nhà đầu tư.
Thiết kế nghiên cứu/phương pháp/tiếp cận: Dựa trên việc kết hợp lý thuyết Tín hiệu và Tài chính hành vi, nghiên cứu lập luận sự bất ổn trong hoạt động cơ bản của doanh nghiệp như một tín hiệu rủi ro quan trọng được thị trường diễn giải. BĐTT được đo lường bằng thang đo đa chiều ở các khía cạnh: Doanh thu, lợi nhuận hoạt động, tài sản và lao động. Nghiên cứu sử dụng dữ liệu bảng của 470 doanh nghiệp phi tài chính niêm yết trên thị trường chứng khoán Việt Nam giai đoạn 2013–2023 và phương pháp hồi quy với sai số chuẩn hiệu chỉnh (PCSE).
Kết quả nghiên cứu: Kết quả thực nghiệm cho thấy các thành phần thuộc BĐTT có tác động cùng chiều và đạt ý nghĩa thống kê lên phản ứng của nhà đầu tư. Sự bất ổn doanh thu và lợi nhuận có ảnh hưởng mạnh mẽ nhất.
Giá trị đóng góp mới: Nhà đầu tư tại Việt Nam nhạy cảm đáng kể với các tín hiệu rủi ro phát sinh từ hoạt động nội tại của doanh nghiệp. Đồng thời, nghiên cứu nhấn mạnh tầm quan trọng của việc xem xét BĐTT như một cấu trúc đa chiều nhằm đánh giá toàn diện rủi ro thuộc doanh nghiệp.
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Abstract:
Purpose: This study examines the impact of growth volatility on investor behavior.
Design/methodology/approach: Drawing on a theoretical framework that combines signaling theory and behavioral finance, the study argues that instability in a firm's fundamental operations serves as a significant risk signal interpreted by the market. To test this relationship, the study employs a multidimensional measure for growth volatility, comprising four main components: volatility in the growth of sales, operating profit, assets, and labor. Panel data from 470 non-financial listed firms in the Vietnamese stock market for the period 2013–2023 and a regression model with Panel-Corrected Standard Errors (PCSE) are utilized.
Findings: The empirical results indicate that all four components of growth volatility have a positive and statistically significant impact on investor reaction. The instability in sales and profit demonstrates the strongest effects.
Originality/value: These findings indicate that investors in Vietnam are highly sensitive to risk signals arising from firms' internal operations, and they underscore the importance of considering growth volatility as a multidimensional construct for a comprehensive assessment of firm risk.