The U.S. Securities and Exchange Commission (SEC), created in 1934 in the wake of the 1929 Wall Street crash, is an independent federal agency responsible for enforcing securities laws to maintain market integrity and safeguard investors. It supervises the registration and disclosure of financial data by publicly traded companies, oversees secondary markets, and fights fraud through legal measures and the EDGAR database. Legal experts and commissioners, such as Felix Frankfurter and William O.
Douglas, have influenced its authority through judicial rulings and regulatory structures, as demonstrated in cases like Securities and Exchange Commission v. Chenery Corporation. The SEC’s expanding role, from implementing the Securities Act of 1933 to addressing modern challenges such as cryptocurrency regulation, highlights its vital function in promoting transparency, fairness, and economic development in U.S. capital markets.