Trading on equity refers to a company raising fixed-cost capital such as debt and preferred shares to enhance earnings for common stockholders. This allows companies to earn disproportionate returns on assets but also carries the risk of bankruptcy if cash flows fall short. Trading on equity occurs in primary markets for new stock issues and secondary markets for subsequent trading. It benefits companies through increased earnings and favorable tax treatment of interest expenses, while increasing returns for common stockholders. Online equity trading provides investors with a fast, efficient, and paperless way to trade securities from anywhere with an internet connection.