Abstract

The study aims to clarify the relationship between company size and profitability of listed companies in Vietnam. The research sample consists of 1,144 listed companies on the Ho Chi Minh Stock Exchange (HoSE) and the Hanoi Stock Exchange (HNX), corresponding to 13,728 observations from 2010 to 2021. By using a quantitative research method (linear regression), the author identifies that company capital size significantly affects profitability, including: (1) The scale of the company (LnTTS) has a negative impact on profitability, and (2) Owner's equity (LnVCSH) has a positive impact. Based on the research findings, the author provides discussions and evaluations regarding the importance of increasing owner's equity size and offers financial solutions to enhance profitability for listed companies.