BlackRock has listed a new municipal bond ETF on the NYSE Arca today, the iShares Long-Term National Muni Bond ETF (LMUB).  

LMUB tracks the ICE AMT-Free US Long National Municipal Index, which measures the performance of investment-grade U.S. municipal bonds with remaining maturities of 12 years or more. A significant portion of the underlying index includes municipal bonds that are exempt from federal income taxes. The fund has an expense ratio of just 0.09%, less than one-third of the average for the category.

See More: Why Muni Bond ETFs Make Sense in 2025

LMUB is managed by BlackRock portfolio managers James Mauro and Karen Uyehara. It expands BlackRock’s municipal bond ETF suite to 16. The issuer’s largest fund in that category is the $39.2 billion iShares National Muni Bond ETF (MUB). It’s also the largest U.S.-listed municipal bond ETF currently trading.

“Advisors recently told VettaFi that they had strong interest in municipal bond ETFs to round out their fixed income allocations,” said Todd Rosenbluth, VettaFi’s head of strategy. 

“It’s great to see the iShares lineup further expand to offer more tools,” he added. 

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