The acronym "SGI" stands for Société de Gestion et d’Intermédiation (Management and Intermediation Company). It refers to a member of the DC/BR whose main activity is to carry out transactions on the stock market on behalf of its clients for a commission or for its own account.

SGIs are exclusively authorized to act as negotiators of listed securities on behalf of third parties. As such, they are authorized to receive and hold public funds in connection with this activity.

SGIs are also allowed to engage in related activities such as managing securities accounts and providing financial engineering advisory services.