The Securities and Exchange Commission (SEC) is a U.S. government agency responsible for regulating and overseeing the securities industry, which includes the stock and bond markets. Its main goals are to protect investors, maintain fair and efficient markets, and facilitate capital formation. The SEC enforces laws that require public companies to disclose important financial information, helping ensure transparency and prevent fraud. By monitoring trading activities and investigating potential violations, the SEC plays a critical role in maintaining trust in the U.S. financial system.