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ETF comparison

MUB vs SCMB

Both US Municipal Bond.

iShares National Muni Bond ETF · Schwab Municipal Bond ETF

Holdings overlap

Weighted by ISIN/CUSIP
21.5 %

2,412 positions appear in both funds. Buying equal dollars of MUB and SCMB would leave roughly 21.5% of each dollar exposed to the same underlying securities.

MUB unmatched 78.1% Shared 21.5% SCMB unmatched 77.5%

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.

In MUB only
4,640 positions
Shared
2,412 positions
In SCMB only
4,433 positions

Side by side

MUB

iShares National Muni Bond ETF

iShares · US Municipal Bond

97 composite / 100
Expense ratio
0.050%
Net assets
$54.41B
TTM yield
3.00%
Top-10 conc.
1.4%
SCMB

Schwab Municipal Bond ETF

Schwab · US Municipal Bond

93 composite / 100
Expense ratio
0.030%
Net assets
$4.07B
TTM yield
3.35%
Top-10 conc.
1.9%

Sub-score comparison

95
Cost
97
93
Tax efficiency
93
100
Liquidity
83
100
Concentration
100
—
Tracking quality
—
MUB sub-score SCMB

Tracking quality isn't part of the composite — see what we don't score for why.

Cost difference

SCMB is 2 bps cheaper than MUB. On a $100,000 position that's about $20/yr more in fees for MUB.

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 SCMB.

Top shared holdings

2,412 shared in total
# Holding In MUB In SCMB Overlap
1 State of California 0.12% 0.15% 0.12%
2 Chicago Transit Authority Sales Tax Receipts Fund 0.11% 0.14% 0.11%
3 New Jersey Transportation Trust Fund Authority 0.09% 0.11% 0.09%
4 San Antonio Water System 0.15% 0.08% 0.08%
5 Commonwealth of Massachusetts 0.08% 0.09% 0.08%
6 New York State Dormitory Authority 0.08% 0.08% 0.08%
7 County of Jefferson 0.07% 0.08% 0.07%
8 State of Washington 0.07% 0.10% 0.07%
9 State of Maryland 0.07% 0.13% 0.07%
10 Ohio State University (The) 0.12% 0.07% 0.07%
11 University of California 0.07% 0.08% 0.07%
12 Commonwealth of Pennsylvania 0.06% 0.11% 0.06%

Only in MUB

4,640 total
  • Board of Regents of the University of Texas System 0.18%
  • Northwest Independent School District 0.12%
  • State of Washington 0.12%
  • City of Seattle 0.11%
  • City of Houston Combined Utility System 0.11%
  • Triborough Bridge & Tunnel Authority 0.11%
  • New Jersey Educational Facilities Authority 0.11%
  • County of King 0.11%
  • Washoe County School District 0.11%
  • Commonwealth of Massachusetts 0.10%

Only in SCMB

4,433 total
  • Commonwealth of Massachusetts 0.22%
  • Gwinnett County School District 0.22%
  • Commonwealth of Pennsylvania 0.21%
  • State of California Department of Water Resources 0.19%
  • State of Washington 0.17%
  • New York City Municipal Water Finance Authority 0.17%
  • Northwest Independent School District 0.16%
  • Indiana Finance Authority 0.15%
  • MTA Hudson Rail Yards Trust Obligations 0.15%
  • City of New York NY 0.15%

Percentages are holdings overlap with the named fund.

Open MUB or SCMB 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.