iShares National Muni Bond ETF
iShares · Tracks ICE AMT-Free US National Municipal Index · Inception Sep 7, 2007
Composite score
Based on a 0.050% expense ratio.
Based on $45.82B in net assets.
Top-10 holdings represent 2.0% of net assets.
US Municipal Bond base · ETF wrapper · 3.19% TTM yield.
The composite is a weighted average of the four core sub-scores above (cost, tax efficiency, liquidity, concentration). Missing sub-scores fall back to the per-category median when the category has at least 50% data coverage, so funds without (e.g.) parsed N-PORT holdings aren't accidentally boosted by renormalization. Tracking quality is shown where computable but isn't currently part of the composite weighting. See methodology for formulas, the tracking-quality partial-coverage rationale, and the dimensions we deliberately don't score (methodology v0.5.1).
Use MUB in our tools
Tool · Cost
Compare MUB's fee against another fund
Compounds the 0.050% expense ratio against a peer over decades.
Tool · Overlap
Compare MUB's holdings with peers
Pairwise holdings heatmap, pre-loaded with similar US Municipal Bond funds.
Tool · TLH
Find a tax-loss harvesting partner for MUB
Ranks every catalog fund by holdings overlap, flags wash-sale risk.
Tool · Placement
Where should this fund live across your accounts?
Asset-location optimizer — places each fund in taxable / tax-deferred / Roth.
Top holdings
| # | Holding | Weight |
|---|---|---|
| 1 | BlackRock Liquidity Funds | 0.56% |
| 2 | Board of Regents of the University of Texas System | 0.21% |
| 3 | Connecticut State Health & Educational Facilities Authority | 0.20% |
| 4 | City of Atlanta Water & Wastewater | 0.19% |
| 5 | Northwest Independent School District | 0.16% |
| 6 | New York State Thruway Authority | 0.16% |
| 7 | Houston Higher Education Finance Corp. | 0.15% |
| 8 | New York State Dormitory Authority | 0.14% |
| 9 | Ohio State University (The) | 0.14% |
| 10 | State of California | 0.13% |
Compare MUB with another fund
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Similar ETFs by holdings overlap
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