Electronic Municipal Market Access

The Electronic Municipal Market Access (EMMA) system, operated by the Municipal Securities Rulemaking Board (MSRB), serves as the official source for municipal securities disclosures and related financial data in the United States. EMMA provides free on-line access to centralized new issue municipal securities disclosure documents (known as official statements), on-going continuing disclosures for all municipal securities, escrow deposit agreements for advance refundings (i.e., refinancings) of outstanding bonds, real-time municipal bond trade price information, interest rates and auction results for municipal auction rate securities (the first free source for this kind of information on the auction rate securities market) and interest rate reset information for variable rate demand obligations, together with daily statistics on trading activity and investor education materials.

Source: Wikipedia — Electronic Municipal Market Access (CC BY-SA 4.0)