Which returned more over the last year, IUSB or MUB?

In the year to Oct 28, 2026, with distributions reinvested, IUSB returned −1.2% and MUB −0.4%.

Which is cheaper, IUSB or MUB?

MUB is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Across categories

IUSB vs MUB: Differences, Returns & Fees

Share on X Download as PDF

IUSB's duration was 5.5 years on Jul 31, 2026 and MUB's 7.0 on Aug 31, 2026; MUB charges 0.05% to IUSB's 0.06%.

askIQ about this page

askIQ about IUSB and MUB

Net assets on Oct 27, 2026: $49.8bn for iShares Core Universal USD Bond ETF and $54.1bn for iShares National Muni Bond ETF.

IUSB on its own →MUB on its own →

At a glance

−1.2%

IUSB total return, 1 year

−0.4%

MUB total return, 1 year

0.06%

IUSB expense ratio

0.05%

MUB expense ratio

Pair scorecard

MUB costs 0.01 points a year less; their one-year returns differ by 0.8 points; MUB is 1.1 times larger.

IUSB vs MUB: Differences, Returns & Fees
Measure	IUSB	MUB
Return
Measure	IUSB	MUB
Total return, 1 year	−1.2%	−0.4%
Benchmark
Measure	IUSB	MUB
What it tracks	Bloomberg U.S. Universal Index	ICE AMT-Free US National Municipal Index
Cost and size
Measure	IUSB	MUB
Expense ratio	0.06%	0.05%
Net assets, as of Oct 27, 2026	$49.8bn	$54.1bn
Holdings
Measure	IUSB	MUB
Holdings in common	0%

Holdings in common uses holdings dated Jul 31, 2026 and Aug 31, 2026. Method

Risk and return

Jun 20, 2014 to Oct 23, 2026 · 644 weekly returns

IUSB MUB

Return

Total return edge MUB (slight) +28.3% +30.2%

Annualized edge MUB (slight) +2.0% +2.2%

Price return edge MUB −10.7% −4.3%

Risk

Volatility edge IUSB 5.0% 5.6%

Max drawdown edge MUB −17.7% −12.4%

Risk-adjusted

Sharpe edge MUB 0.02 0.04

Sortino edge MUB 0.02 0.06

Calmar edge MUB 0.11 0.17

Reading

MUB returned slightly more: +30.2% to +28.3%. IUSB swung less: 5.0% to 5.6%. MUB fell less at its worst: −12.4% to −17.7%.

Full scorecard

9 measures, with how each is measured Open ↓

Risk and return: IUSB vs MUB: Differences, Returns & Fees
Measure	IUSB	MUB	Edge	How it is measured
Return
Total return	+28.3%	+30.2%	MUB (slight)	Price change plus distributions, reinvested.
Annualized	+2.0%	+2.2%	MUB (slight)	Total return as a yearly rate.
Price return	−10.7%	−4.3%	MUB	Price change alone, distributions left out.
Risk
Volatility	5.0%	5.6%	IUSB	Spread of weekly returns, annualized. Lower is steadier.
Downside deviation	3.6%	3.9%	IUSB (slight)	Like volatility, counting only weeks below the Treasury bill rate.
Max drawdown	−17.7%	−12.4%	MUB	Deepest fall from a high to the low after it.
Risk-adjusted
Sharpe	0.02	0.04	MUB	Return above Treasury bills per unit of volatility.
Sortino	0.02	0.06	MUB	Return above Treasury bills per unit of downside deviation.
Calmar	0.11	0.17	MUB	Annualized return divided by the max drawdown.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 644 weekly returns. Cash rate: the 13-week Treasury bill.

What they share

By the books each fund has filed, IUSB and MUB hold 0% of their money in the same securities at the same weight. Holdings dated Jul 31, 2026 and Aug 31, 2026.

50%

0 half 100%

half

0% in common

Positions both hold · largest shared weight first IUSB MUB

Only in one fund ↓

Only in IUSB

Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.41%

U.S. Treasury Notes, due Dec 31, 2029 0.37%

U.S. Treasury Notes, due May 15, 2036 0.37%

U.S. Treasury Notes, due Feb 15, 2034 0.36%

U.S. Treasury Notes, due Feb 15, 2035 0.35%

U.S. Treasury Notes, due Aug 15, 2035 0.34%

U.S. Treasury Notes, due May 15, 2034 0.34%

U.S. Treasury Notes, due Nov 15, 2034 0.34%

Only in MUB

Board of Regents of the University of Texas System, Series 2025B, due Aug 15, 2036 0.18%

San Antonio Water System, Series 2025D, due May 1, 2055 0.15%

New York State Thruway Authority, Series 2022A, due Mar 15, 2048 0.15%

New York State Dormitory Authority, Series 2019D, due Feb 15, 2047 0.13%

Northwest Independent School District, Series 2025, due Feb 15, 2055 0.12%

Houston Higher Education Finance Corp., Series 2024, due May 15, 2034 0.12%

State of New Jersey, Series 2020A, due Jun 1, 2028 0.12%

Ohio State University (The), Series 2026A, due Jun 1, 2035 0.12%

Check overlap with more funds →

Side by side

IUSB iShares Core Universal USD Bond ETF MUB iShares National Muni Bond ETF

Where it sits Bond ETF Bond ETF

Issuer iShares iShares

What it is Tracks an index of Universal USD Bond Tracks an index of National Muni Bond

Total return, 1 year −1.2% −0.4%

Expense ratio 0.06% 0.05%

Holdings 18338 7873

Net assets, as of Oct 27, 2026 $49.8bn $54.1bn

IUSB and MUB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

Client brief · page 1 of 2 Report BR-CF440A27B2

IUSB and MUB do different jobs. What does each one do in a portfolio?

What each follows. IUSB follows Bloomberg U.S. Universal Index and MUB follows ICE AMT-Free US National Municipal Index.
Holdings in common. 0% of the weight is in the same securities (holdings dated Jul 31, 2026 and Aug 31, 2026).
One-year total return (similar). Over 1 year to Oct 28, 2026 IUSB returned −1.2% and MUB −0.4% with distributions reinvested, a gap of 0.8 points.

Data as of Oct 28, 2026.

The two-page PDF for this pair is coming. Save the comparison to follow its changes. Free. It needs an email sign-in, once.

Your saved page · Privacy.

Alert

About each fund

IUSB

IUSB tracks an index of Universal USD Bond. Over the year to Oct 28, 2026 it returned −1.2% with distributions reinvested. The prospectus expense ratio is 0.06% a year.

MUB

MUB tracks an index of National Muni Bond. Over the year to Oct 28, 2026 it returned −0.4% with distributions reinvested. The prospectus expense ratio is 0.05% a year.

Questions people ask

Which returned more over the last year, IUSB or MUB?: In the year to Oct 28, 2026, with distributions reinvested, IUSB returned −1.2% and MUB −0.4%.
Which is cheaper, IUSB or MUB?: MUB is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

IUSB vs VTEB HYMB vs IUSB IUSB vs JNK CORB vs IUSB BOND vs MUB MUB vs SGOV MUB vs TIP BOXX vs MUB

Where to next

IUSB on its own →MUB on its own →Hold both: look the portfolio through →Rankings →IUSB dividend history →IUSB holdings →MUB dividend history →MUB holdings →Standards and sources →

Sources and dates

IUSB and MUB filings on SEC EDGAR ↗

IUSB prospectus with the expense ratio (SEC) ↗

iShares page for IUSB ↗

MUB prospectus with the expense ratio (SEC) ↗

iShares page for MUB ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, IUSB against MUB, data as of Oct 28, 2026. https://etfiq.com/compare/any/iusb-vs-mub

Open data →

Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.