What the SEC is and what it does for U.S. markets

What the SEC is and what it does for U.S. markets

Wed, August 19, 2026 at 5:36 PM GMT+3 2 min read

The Securities and Exchange Commission is the U.S. federal agency responsible for regulating securities markets, protecting investors, and enforcing federal securities laws. It is headquartered in Washington, D.C.

Congress established the SEC through the Securities Exchange Act of 1934, a direct legislative response to the stock market crash of 1929 and the Great Depression that followed. The crash exposed widespread fraud, insider manipulation, and a near-total absence of disclosure requirements in American financial markets. The SEC was created to restore investor confidence by imposing transparency and accountability on companies that sell securities to the public.

The agency's authority covers stocks, bonds, mutual funds, and other investment instruments. Its core functions fall into three areas. First, it requires public companies to disclose material financial information — through filings such as annual reports, quarterly reports, and prospectuses — so that investors can make informed decisions. Second, it oversees the key participants in securities markets, including stock exchanges, broker-dealers, investment advisers, and credit rating agencies. Third, it investigates and prosecutes violations of securities law, including insider trading, accounting fraud, and the sale of unregistered securities.

The SEC is an independent agency, meaning it operates separately from the executive branch's direct chain of command, though its commissioners are appointed by the president and confirmed by the Senate. Five commissioners serve staggered five-year terms, and no more than three may belong to the same political party. The commission sets policy by majority vote.

Enforcement actions can result in civil penalties, disgorgement of profits, trading suspensions, and referrals to the Department of Justice for criminal prosecution. The SEC does not itself bring criminal charges — that authority rests with federal prosecutors — but its investigations frequently provide the evidentiary foundation for criminal cases.

The agency was founded in part by Joseph P. Kennedy Sr., who served as its first chair, and it has operated continuously since 1934 as the primary regulator of U.S. capital markets.