An audit committee shall be established in each public interest entity. The audit committee of an undertaking referred to in § 1, par. 22(d) and (f) undertakings whose transferable securities are admitted to trading on a regulated market in a Member State of the European Union; credit institutions; insurers and reinsurers; pension insurance companies and the funds managed by them; investment firms which are large undertakings within the meaning of Art; collective investment schemes (CIS) and management companies within the meaning of the ICSD Act and of other collective investment undertakings which are large undertakings within the meaning of the ICA; financial institutions within the meaning of the Credit Institutions Act which are large undertakings within the meaning of the ICA; "Holding BDZ EAD and its subsidiaries; trading companies whose main activity is to produce and/or to transmit and/or to sell electricity and/or heat and which are large enterprises; trading companies whose main activity is to import and/or to transmit and/or to distribute and/or to transit natural gas and which are large enterprises under this Act; trading companies whose main activity is to provide water supply and sewerage services)) of the additional provisions of the Accounting Act may perform the following tasks The audit committee is a corporate governance mechanism that enhances the reliability of financial statements, improves internal controls and increases the role of the auditor. The audit committee is regulated in Article 107 of the Independent Financial Audit Act.