Southern Trust Securities Asset Management Inc. (STS) is an asset management company that provides both advisory and discretionary investment services under fixed fees arrangements. The company is registered with the state of Florida. It offers non-discretionary advisory accounts in coordination with Pershing Advisor Solutions, LLC. The company is a subsidiary of Southern Trust Securities Holding Corp., a broker-dealer and investment-banking firm. Southern Trust Securities Holding Corp. focuses on merger and acquisition advisory services and private placements convertible into publicly traded shares. In 2007, the company entered into an agreement with two Argentine companies, Inversora Castellanos, S.A. and Administacion de Carteras.