Browse Regulation

Securities Act of 1933

Foundational U.S. securities statute requiring registration and disclosure for many public offerings while prohibiting fraud in securities sales.

The Securities Act of 1933 is the foundational U.S. statute that requires registration and disclosure for many public securities offerings while prohibiting fraud in the sale of securities.

It matters because modern public-offering practice is built on the idea that investors should receive material information before buying newly issued securities.

What the Act Does

The Securities Act of 1933 is best known for:

  • requiring registration of many public offerings
  • making disclosure central to offering practice
  • supporting use of documents such as the registration statement and prospectus
  • creating anti-fraud liability around securities sales

Why It Matters in Finance

The Act sits at the center of U.S. issuance practice. Terms like Form S-1, public offering, and SEC Regulation D (Reg D) all make more sense once this baseline registration-and-disclosure framework is clear.

Revised on Monday, May 18, 2026