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ETF comparison

MUB vs MUNI

Both US Municipal Bond.

iShares National Muni Bond ETF · PIMCO Intermediate Municipal Bond Active Exchange-Traded Fund

Holdings overlap

Weighted by ISIN/CUSIP
1.1 %

63 positions appear in both funds. Buying equal dollars of MUB and MUNI would leave roughly 1.1% of each dollar exposed to the same underlying securities.

MUB unmatched 98.5% Shared 1.1% MUNI unmatched 97.6%

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
6,989 positions
Shared
63 positions
In MUNI only
583 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%
MUNI

PIMCO Intermediate Municipal Bond Active Exchange-Traded Fund

PIMCO · US Municipal Bond

80 composite / 100
Expense ratio
0.35%
Net assets
$3.70B
TTM yield
3.03%
Top-10 conc.
10.7%

Sub-score comparison

95
Cost
65
93
Tax efficiency
93
100
Liquidity
81
100
Concentration
99
—
Tracking quality
—
MUB sub-score MUNI

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

Cost difference

MUB is 30 bps cheaper than MUNI. On a $100,000 position that's about $300/yr more in fees for MUNI.

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 MUNI.

Top shared holdings

63 shared in total
# Holding In MUB In MUNI Overlap
1 Board of Regents of the University of Texas System 0.18% 0.13% 0.13%
2 District of Columbia 0.10% 0.46% 0.10%
3 Illinois State Toll Highway Authority 0.07% 0.18% 0.07%
4 New York City Transitional Finance Authority Future Tax Secured 0.04% 0.49% 0.04%
5 City of San Antonio Electric & Gas Systems 0.04% 0.37% 0.04%
6 South Carolina Public Service Authority 0.04% 0.10% 0.04%
7 New York City Transitional Finance Authority Future Tax Secured 0.04% 0.15% 0.04%
8 New York State Dormitory Authority 0.03% 0.16% 0.03%
9 City of San Antonio Electric & Gas Systems 0.03% 0.09% 0.03%
10 City of Atlanta Water & Wastewater 0.03% 0.36% 0.03%
11 New York City Transitional Finance Authority Future Tax Secured 0.03% 0.14% 0.03%
12 New Jersey Economic Development Authority 0.02% 0.09% 0.02%

Only in MUB

6,989 total
  • 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%
  • State of California 0.12%
  • City of Seattle 0.11%

Only in MUNI

583 total
  • United States Treasury 2.20%
  • United States Treasury 1.78%
  • United States Treasury 1.16%
  • United States Treasury 0.86%
  • Puerto Rico Sales Tax Financing Corp Sales Tax Revenue 0.81%
  • Connecticut State Health & Educational Facilities Authority 0.81%
  • Black Belt Energy Gas District 0.81%
  • Texas Municipal Gas Acquisition & Supply Corp V 0.80%
  • Fort Bend Independent School District 0.79%
  • FHLMC Multifamily VRD Certificates 0.71%

Related comparisons

More comparisons with MUB

More comparisons with MUNI

Percentages are holdings overlap with the named fund.

Open MUB or MUNI at a brokerage

Both funds trade commission-free at major US brokerages.

Open at Fidelity

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.