Which is the largest self-regulatory organization in the U.S.?

The Financial Industry Regulatory Authority (FINRA) is the largest self-regulatory organization (SRO) in the United States. As an independent, non-governmental organization, FINRA plays a critical role in overseeing brokerage firms and exchange markets. Its primary mission is to protect investors by ensuring that the securities industry operates fairly and honestly. FINRA enforces rules that govern the activities of its member firms, including compliance with industry regulations, and it conducts regular examinations to maintain the integrity of the securities markets.

FINRA also provides education and resources for investors to help them make informed decisions regarding their investments. By setting rules and standards for conduct, it helps to maintain market integrity and public confidence in the U.S. financial system, illustrating why it is recognized as the largest SRO compared to other organizations that play specific roles within the financial landscape.