ETF comparison
MUB vs SUB
Both US Municipal Bond.
iShares National Muni Bond ETF · iShares Short-Term National Muni Bond ETF
Holdings overlap
689 positions appear in both funds. Buying equal dollars of MUB and SUB would leave roughly 9.7% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
MUB is 2 bps cheaper than SUB. On a $100,000 position that's about $20/yr more in fees for SUB.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with MUB vs SUB.
Top shared holdings
689 shared in total| # | Holding | In MUB | In SUB | Overlap |
|---|---|---|---|---|
| 1 | San Antonio Water System | 0.15% | 0.18% | 0.15% |
| 2 | State of New Jersey | 0.12% | 0.17% | 0.12% |
| 3 | East County Advanced Water Purification Joint Powers Authority | 0.11% | 0.17% | 0.11% |
| 4 | City of Houston Combined Utility System | 0.11% | 0.18% | 0.11% |
| 5 | Triborough Bridge & Tunnel Authority | 0.11% | 0.25% | 0.11% |
| 6 | New Jersey Educational Facilities Authority | 0.11% | 0.16% | 0.11% |
| 7 | State of Illinois | 0.11% | 0.15% | 0.11% |
| 8 | County of King | 0.11% | 0.20% | 0.11% |
| 9 | Board of Governors of Colorado State University System | 0.08% | 0.17% | 0.08% |
| 10 | Port of Tacoma | 0.08% | 0.11% | 0.08% |
| 11 | City of Seattle | 0.11% | 0.07% | 0.07% |
| 12 | Pennsylvania Turnpike Commission | 0.09% | 0.07% | 0.07% |
Only in MUB
6,363 total- Board of Regents of the University of Texas System 0.18%
- New York State Thruway Authority 0.15%
- New York State Dormitory Authority 0.13%
- Northwest Independent School District 0.12%
- Houston Higher Education Finance Corp. 0.12%
- Ohio State University (The) 0.12%
- State of Washington 0.12%
- State of California 0.12%
- Chicago Transit Authority Sales Tax Receipts Fund 0.11%
- Washoe County School District 0.11%
Only in SUB
2,287 total- State of California 0.28%
- New York City Municipal Water Finance Authority 0.27%
- State of California 0.26%
- State of California 0.23%
- State of California 0.23%
- City of Seattle WA Municipal Light & Power Revenue 0.23%
- State of Georgia 0.22%
- City of New York 0.21%
- State of Connecticut Special Tax 0.20%
- New York City Transitional Finance Authority Future Tax Secured 0.20%
Related comparisons
More comparisons with MUB
- MUB vs CMF · iShares California Muni Bond ETF 9.7%
- MUB vs NYF · iShares New York Muni Bond ETF 5.6%
- MUB vs ITM · VanEck Intermediate Muni ETF 3.7%
- MUB vs JMUB · JPMorgan Municipal ETF 3.2%
- MUB vs CGMU · Capital Group Municipal Income ETF 2.6%
- MUB vs SHM · State Street SPDR Nuveen ICE Short Term Municipal Bond ETF 1.9%
More comparisons with SUB
- SUB vs VTEB · Vanguard Tax-Exempt Bond Index Fund ETF Shares 8.1%
- SUB vs SCMB · Schwab Municipal Bond ETF 6.0%
- SUB vs CMF · iShares California Muni Bond ETF 4.8%
- SUB vs NYF · iShares New York Muni Bond ETF 3.1%
- SUB vs JMST · JPMorgan Ultra-Short Municipal Income ETF 2.9%
- SUB vs CGMU · Capital Group Municipal Income ETF 1.8%
Percentages are holdings overlap with the named fund.
Open MUB or SUB at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.