摘要：Corporate governance is one of the most important issues to which has been paidattention by big companies due to the massive financial scandals of recent years. Corporategovernance includes supervising the company management, separating the economic units fromits ownership and protecting investors’ and benefiters’ rights. The research goal is to assess therelation between some corporate governance mechanisms and stock profitability. The researchindependent variables are: institutional ownership, ownership concentration and board size. Thestock return is dependent variable. The research statistical society includes all investors whohave visited Tehran stock exchange to buy and sell shares in 2012. The sampling is donerandomly. The data collection is done using field and library methods by distributingquestionnaires among 130 stock investors. Finally, according to the collected data, the researchhypotheses are assessed and analyzed through descriptive and inferential statistics. The SPSSsoftware is used to analyze the collected data.
