Capital market paves the way for developing and creating job and improving level of welfare by directing capitals and savings of people. Economic growth and welfare improvement cannot be achieved in long term without considering investing and main factors existing in the environment. This paper evaluates factors affecting transactors` and managers` decision making for investing. Independent variables include dividend per share (DPS), yield, price trend, market status, consulting and recommendations of brokers, and perceived risk which is considered as features of capitalists. Also, dependent variable contains transactors` and managers` decision making. Statistical population includes all capitalists referred to hall of the Tehran Stock Exchange in 2012. The sample is simply randomized. Data is collected through library and field methods by distributing questionnaires among 130 stock capitalists. Then, the research hypothesis is examined and analyzed using descriptive and inferential statistics with respect to collected data. Finally, the obtained results from distributed questionnaires are analyzed using SPSS software. The results show that capitalists do not rely on the financial statements and financial ratios and the accounting system as a whole, in return, they consider the more tangible criteria such as price trend and market status.