Tehran Stock Exchange, as the executive body of the securities market, has a crucial role in securities transactions. However, regarding the present rules and regulations, a number of tasks and functions have been assigned to the TSE, the breach of every single rule of which could involve civil liability for the TSE.
For the civil liability of the TSE Company being realized, the presence of all three elements of loss, harmful act and causality relation is required. Specifications of each of these elements are studied in this article with a view toward the nature of transactions. Since one of the main functions of the TSE Company is to announce whether the transaction is final or not, the liability of the TSE is studied for a case in which the transaction is not final according to a decision by the arbitration board of the securities market.