A study on effect of personal traits and social capitals of Stock Exchange Brokerages CEOs on their firm's performance

The purpose of this study is to assess the effects of personality traits (narcissism and core self-evaluation) as well as, internal and external social capital of Tehran Stock Exchange brokerage CEOs on the performance of their firms. Entrepreneurial orientation, transformational leadership and reputation variables mediate this relationship. This survey was conducted on 53 CEOs of the brokerages using a questionnaire composed of 10 main criteria, 20 sub-criteria and 92 items (questions). The results confirmed fourteen out of seventeen hypotheses. The relationship of narcissism, core self-evaluation, and internal and external social capital of CEOs via the mediating variables was confirmed. Also the moderating role of board power, environmental dynamism, CEOs tenure and firm age was verified. The resulted model revealed that half of firm performance can be indirectly effected by core self- evaluation, narcissism and external social capital.