Electronic Municipal Market Access (EMMA)

The MSRB is a Self Regulatory Organization (SRO), overseen by Congress and the Securities and Exchange Commission (SEC). MSRB rules generally must be approved by the SEC before becoming effective. 

The MSRB safeguards the nearly $4 trillion municipal securities market that helps provide reliable income for investors and efficient capital for communities. In support of its mission, the MSRB

• Municipal Securities Rulemaking Board (MSRB)

• Electronic Municipal Market Access (EMMA)