SEC (Securities and Exchange Commission)
The SEC is the primary federal agency responsible for enforcing securities laws, regulating markets, and protecting investors in the United States.
The Securities and Exchange Commission was established in 1934 under the Securities Exchange Act, largely in response to the stock market crash of 1929 and the financial fraud that contributed to the Great Depression. Its founding mission was to restore investor confidence in American capital markets by creating a framework of disclosure, transparency, and accountability. Today it remains the central regulator overseeing nearly every aspect of the U.S. securities industry.
The SEC has five presidentially appointed commissioners and operates through several key divisions. The Division of Corporation Finance reviews the disclosure documents that public companies are required to file, including annual reports (Form 10-K), quarterly reports (Form 10-Q), and registration statements for new securities offerings. The Division of Enforcement investigates potential violations of securities laws and can bring civil actions in federal court or before administrative judges. The Division of Trading and Markets oversees broker-dealers, exchanges, and clearing agencies.
One of the SEC's most powerful tools is the mandatory disclosure system. Under the principle that investors can make informed decisions when given accurate and timely information, the SEC requires public companies to disclose material facts about their financial condition, operations, and risks. These filings are made publicly available through the EDGAR (Electronic Data Gathering, Analysis, and Retrieval) database, which any investor can access for free.
The agency also has jurisdiction over investment advisers with more than $110 million in assets under management, mutual funds, and exchange-traded funds. It writes rules that govern how securities are traded, what information must be disclosed in prospectuses, and how brokers must treat their clients. Penalties for violating SEC rules can include disgorgement of profits, civil fines, trading bans, and referrals to the Department of Justice for criminal prosecution.
For retail investors, the SEC's investor education branch — Investor.gov — provides resources on avoiding fraud, understanding investment products, and verifying the credentials of financial professionals. Investors can file complaints with the SEC and are protected by whistleblower provisions that can yield financial rewards for reporting violations that lead to enforcement actions exceeding $1 million in sanctions.