The world of finance is dynamic, technical, and highly competitive. To be able to work in this field, it is necessary to obtain specific certifications and maintain constant knowledge updates, especially regarding regulatory changes. With technological advances, many functions have been undergoing adaptations, requiring leaders to adapt to new management models. This study investigates traits associated with narcissistic leadership and humble leadership in the brazilian financial sector, analyzing how these styles impact the perception of professionals subordinate to leaders who have such traits. In addition, it will be assessed whether there is a moderating factor of belief in a just world that may reduce these effects. For that, a quantitative study was conducted through a laboratory experiment based on vignettes, aimed at students and former students who work in the field. The results indicate that narcissistic leadership negatively impacts the attitudes of these professionals towards leaders, and that humble leadership evokes greater trust, respect and psychological security in professionals in the sector. This work seeks to add to the existing literature on the subject, offering a relevant contribution to organizational studies applied to one specific context, wich is financial market.