For making aware the investors about the companies’ goals and aims and future views and perspectives, some of Iranian and Dutch companies’ prime ministers tried to do the voluntary disclosure. The research concluded that the financial and non-financial voluntary disclosure about the mentioned companies cause to decrease the lack of information symmetry, rising the share liquidity and finally improving the financial situation of company. Hence, the present research tried to study two stock exchanges; Tehran and Netherland Stock Exchanges, respectively. The results of the study will help the other researchers to have a suitable perspective about Voluntary disclosure in stock exchange.