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Contact: Aleis Stokes, Chief External Relations Officer 


Washington, DC– The Municipal Securities Rulemaking Board (MSRB) today expanded the availability of yield curves and indices on its free Electronic Municipal Market Access (EMMA®) website with the addition of the Tradeweb AAA Municipal Curve.

“Offering the Tradeweb AAA Municipal Curve for free on EMMA is an important enhancement to market transparency,” MSRB Chief Market Structure Officer John Bagley said. “MSRB is proud to provide another source of hourly municipal yield information that can help investors, issuers and other market participants make more informed and timely decisions.”

The Tradeweb AAA Municipal Curve, which is the foundation for its Ai-Price model for municipal bonds, is constructed by selecting AAA-rated general obligation and revenue bonds that meet certain criteria metrics. It is updated hourly by combining public MSRB data with data from Tradeweb’s electronic municipal bond trading platform, while leveraging proprietary machine learning and data science to adjust the curves intra-day.

MSRB offers many yield curves and indices of third-party providers on EMMA, which are accessible from EMMA’s Tools and Resources tab . These market indicators and tools help investors to evaluate bond prices and yields, measure market direction and performance, and determine pricing on new bond issues. Learn more about yield curves and indices on EMMA.

The Municipal Securities Rulemaking Board (MSRB) protects and strengthens the municipal bond market, enabling access to capital, economic growth, and societal progress in tens of thousands of communities across the country. The MSRB fulfills this mission by creating trust in our market through informed regulation of dealers and municipal advisors that protects investors, issuers and the public interest; building technology systems that power our market and provide transparency for issuers, institutions, and the investing public; and serving as the steward of market data that empowers better decisions and fuels innovation for the future. The MSRB is a self-regulatory organization governed by a board of directors that has a majority of public members, in addition to representatives of regulated entities. The MSRB is overseen by the Securities and Exchange Commission and Congress.