Tradeweb launches session-based muni bond trading protocol

Tradeweb Markets Inc. (Nasdaq: TW) has launched Muni Sweep, a session-based trading protocol for the municipal bond market, according to a company press release.

The protocol concentrates municipal bond inventory into a short, defined trading window, allowing market participants to review opportunities, accept interest and compare levels against Tradeweb composite pricing before the session closes. The workflow supports CUSIP and size submissions with an optional mark yield or price, and includes Excel import and export functionality.

Tradeweb said the tool is designed to reduce the time risk is tied up during inventory assessment. Traditional bid-wanted workflows can take hours, while Muni Sweep is intended to complete the process in minutes.

According to the Municipal Securities Rulemaking Board, the municipal bond market recorded 17.6 million trades in 2025, a 22% increase year-over-year and a fourth consecutive record year. Electronic trading market share in the segment rose from 16% in 2022 to nearly 21% in Q2 2026, per Coalition Greenwich data. Tradeweb reported that its municipal bond average daily volume reached a record in Q3 2026, with September average daily volume rising 40% year-over-year to $729 million.

Tradeweb's wholesale platform currently hosts more than 25 Muni Sweep-style sessions weekly across 10 products globally. The company said the municipal market launch extends the same approach to its retail and institutional clients.

Troy Dixon, Managing Director and Co-Head of Global Markets at Tradeweb, said: "Muni Sweep is designed to give market makers a faster, more structured way to manage inventory in today's market. We've already seen this protocol gain momentum across other products on our platforms and bringing it to municipals is a natural next step in how we build for our clients' businesses."

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