Management decisions have an effect on cost behavior, and the duality of the CEO makes it easier for managers to make decisions based on personal interests. In Brazil, the Code of best corporate governance practices (Instituto Brasileiro de Governança Corporativa [IBGC], 2023) recommends that the chief executive officer (CEO) should not hold the position of chairman or member of the board of directors. In view of this, this research aimed to evaluate the effect of CEO duality on the asymmetric behavior of the operating costs (OC) of Brazilian publicly traded companies. To this end, descriptive, documentary and quantitative research was carried out on a balanced sample of 178 companies in the period 2012-2021, and the data was analyzed using descriptive statistics and hierarchical linear regression. This study adopted the perspective of Jensen and Meckling's agency theory (1976), in whic...

Companies continuously seek strategies to enhance their market performance. Among the factors that may influence this performance, the managerial ability with which executives carry out their responsibilities stands out. In this context, the present study aims to examine whether more ability managers contribute to improved market performance among Brazilian firms. Ability managers tend to analyze organizational information more carefully, which provides them with superior predictive capabilities (Bessy et al., 2024; Hasan, 2018). This attribute supports more effective and efficient decision-making, positively impacting business outcomes (Fagundes et al., 2024; Ribeiro & Souza, 2023; Wang et al., 2017). The study employed a sample of 206 firms covering the period from 2019 to 2023. The analysis was conducted using ordinary least squares (OLS) regression with fixed effects for industry and...