In financial markets information is in the form of signs, news and different predictions coming from inside or outside of the company which makes reactions and as a result changes in stock prices. Such as increase and decrease over the limit or long period of times. However, this behavior is...

A mandatory audit firm's rotation policy has been adopted in many counties, including Iran, as a mechanism to improve auditor independence and in turn, audit quality. Proponents of this policy claim that its results are increased clients' audit costs. Using data from firms listed in Tehran Stock...