Abstract
In this study, the independent audit reports published between 2016 and 2020 of companies in Borsa Istanbul were examined. As a result of a total of 2,449 audit reports examined, 57% of the companies were audited by the big four audit firms, approximately 19% of the audit partners who signed the audit report were women. While the rate of female auditors in the big four audit firms is 79%, it has been determined that this rate is approximately 21% in other audit firms. Again, it has been determined that approximately 89% of the audit reports examined include unqualified opinion, the rate of reports containing unqualified opinions in the audit reports signed by the big four audit firm is 93%, and this rate is 82% in other audit firms. In addition, it was determined that there was an audit partner who signed a total of 20 audit reports in the audits of companies traded only in Borsa Istanbul within a year.