Securities Market by absorption and utilization of stagnant capitals causes increasing of investments volume and has a significant role in economic growth and development of the countries. So, it is important to maintain the security and integrity of this market. Since the approval Securities Market in 2005 Private proved, new rules are governing the securities transactions. Requirements of these transactions including the rules and regulations of the Private law in the field of providing individual justice and also the economic public policy lead to the government influence on these transactions with enacting mandatory regulations. For these transactions, different mechanisms are predicted as in the stage of formation. What is considered in this article is the confirmation of transaction by the stock exchange which is a formal term and it is affecting on the nature of contract, and giving credits to it. This article is surveying the role of confirmation in the process of transactions using analytical method.