PetroVietnam Securities Incorporated (PSI) is a Vietnam-based company engaged in the provision of investment services. It offers securities brokerage services and investment advice for individual and institutional clients, as well as underwriting services, custody services, share auction services and shareholder management services. The Company also provides financial advisory services for corporate equitizations, equity offerings, stock listings, financial restructurings and mergers and acquisitions (M&A). In addition, it is involved in securities trading.