Securities Exchange Act of 1934
The Securities Exchange Act of 1934 is the foundational federal statute that established the Securities and Exchange Commission (SEC) and created the regulatory framework governing secondary market trading of securities, broker-dealer conduct, and ongoing public company disclosure in the United States.
Enacted in the aftermath of the 1929 stock market crash, the Securities Exchange Act of 1934 addressed the systemic problems that the Securities Act of 1933 — which regulated the initial sale of securities — could not reach on its own. Congress recognized that regulating new issuances while leaving secondary markets ungoverned would fail to restore investor confidence in US capital markets.
The 1934 Act created the Securities and Exchange Commission as a permanent independent regulatory body with authority to write rules, bring enforcement actions, and oversee the entire securities industry. Prior to the SEC's creation, securities regulation was fragmented across state blue-sky laws, stock exchange self-governance, and limited federal authority.
A core obligation introduced by the Act is the continuous disclosure requirement for public companies. Any company with a class of securities listed on a national exchange, or that exceeds specified size thresholds, must register those securities with the SEC and file periodic reports: the annual Form 10-K, quarterly Form 10-Q, and current event Form 8-K for material developments. These filings are publicly available through the SEC's EDGAR database and form the primary source of fundamental information investors use to evaluate public companies.
The Act also regulates the infrastructure of securities markets. National securities exchanges, broker-dealers, clearing agencies, and transfer agents must register with the SEC and comply with its rules. Broker-dealers are subject to net capital requirements, record-keeping obligations, and conduct standards designed to protect retail customers. The Act grants the SEC authority to regulate margin requirements in consultation with the Federal Reserve (which sets actual margin rules through Regulation T).
Section 10(b) and Rule 10b-5 promulgated under it are among the most consequential provisions in US securities law. Rule 10b-5 prohibits fraud and misrepresentation in connection with the purchase or sale of any security, serving as the primary legal basis for SEC enforcement actions and private lawsuits involving securities fraud, insider trading, and market manipulation.
The proxy rules established under the 1934 Act require companies to provide shareholders with material information before annual meetings, enabling informed voting on matters such as director elections, executive compensation, and major corporate transactions. The Act has been amended numerous times — including by the Sarbanes-Oxley Act of 2002, the Dodd-Frank Act of 2010, and the JOBS Act of 2012 — as markets and investor protection needs have evolved.