ETF comparison
CMF vs MUB
Both US Municipal Bond.
iShares California Muni Bond ETF · iShares National Muni Bond ETF
Holdings overlap
666 positions appear in both funds. Buying equal dollars of CMF and MUB 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 3 bps cheaper than CMF. On a $100,000 position that's about $30/yr more in fees for CMF.
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 CMF vs MUB.
Top shared holdings
666 shared in total| # | Holding | In CMF | In MUB | Overlap |
|---|---|---|---|---|
| 1 | East County Advanced Water Purification Joint Powers Authority | 0.31% | 0.11% | 0.11% |
| 2 | State of California | 0.15% | 0.10% | 0.10% |
| 3 | San Diego Unified School District | 0.10% | 0.09% | 0.09% |
| 4 | University of California | 0.09% | 0.09% | 0.09% |
| 5 | University of California | 0.15% | 0.08% | 0.08% |
| 6 | State of California | 0.09% | 0.08% | 0.08% |
| 7 | Foothill-Eastern Transportation Corridor Agency | 0.26% | 0.08% | 0.08% |
| 8 | Southern California Public Power Authority | 0.14% | 0.07% | 0.07% |
| 9 | University of California | 0.15% | 0.07% | 0.07% |
| 10 | Los Angeles Unified School District | 0.06% | 0.09% | 0.06% |
| 11 | State of California | 0.18% | 0.06% | 0.06% |
| 12 | County of Los Angeles CA | 0.14% | 0.06% | 0.06% |
Only in CMF
1,065 total- Orange County Water District 0.60%
- Anaheim Housing & Public Improvements Authority 0.49%
- University of California 0.45%
- Irvine Ranch Water District 0.43%
- San Mateo County Transit District Sales Tax 0.42%
- University of California 0.32%
- Bay Area Toll Authority 0.30%
- San Francisco City & County Public Utilities Commission Wastewater 0.26%
- University of California 0.26%
- California State Public Works Board 0.25%
Only in MUB
6,386 total- Board of Regents of the University of Texas System 0.18%
- San Antonio Water System 0.15%
- 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%
- State of New Jersey 0.12%
- Ohio State University (The) 0.12%
- State of Washington 0.12%
- City of Seattle 0.11%
Related comparisons
More comparisons with CMF
- CMF vs VTEB · Vanguard Tax-Exempt Bond Index Fund ETF Shares 7.6%
- CMF vs SCMB · Schwab Municipal Bond ETF 7.0%
- CMF vs PZA · Invesco National AMT-Free Municipal Bond ETF 6.0%
- CMF vs SUB · iShares Short-Term National Muni Bond ETF 4.8%
- CMF vs ITM · VanEck Intermediate Muni ETF 3.3%
- CMF vs SHM · State Street SPDR Nuveen ICE Short Term Municipal Bond ETF 2.0%
More comparisons with MUB
- 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%
- MUB vs JMST · JPMorgan Ultra-Short Municipal Income ETF 1.1%
Percentages are holdings overlap with the named fund.
Open CMF or MUB 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.