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IBMUvsMFSMETF Comparison

ETF 1

IBMU

iShares iBonds Dec 2032 Term Muni Bond ETF

This fund is part of

Municipal Bonds

+0.15%

Full IBMU fund page

VS

ETF 2

MFSM

MFS Active Intermediate Muni Bond ETF

This fund is part of

Municipal Bonds

+0.15%

Full MFSM fund page

iShares iBonds Dec 2032 Term Muni Bond ETF (IBMU) and MFS Active Intermediate Muni Bond ETF (MFSM) belong to the same industry segment: Municipal Bonds. IBMU's top 2 sector exposures are Municipal and Non-Corporate. In contrast, MFSM's top sector exposures are Municipal. IBMU is less expensive with a Total Expense Ratio (TER) of 0.1%, versus 0.34% for MFSM. Run a side-by-side ETF comparison of IBMU and MFSM below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.

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IBMU vs MFSM performance and flow charts

Performance

Cumulative Flows

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Data Services

Historic performance and flows

Data as of 09/11/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IBMU MFSM	-1.86%-2.52%	-2.03%-2.93%	n/a-1.14%	n/a+0.85%	n/an/a	n/an/a
Flows	IBMU MFSM	+$4M+$2M	+$11M+$7M	-+$53M	-+$57M	--	--

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IBMU MFSM	+2.74%+2.94%	n/a+2.33%	n/an/a	n/an/a
Max drawdown	IBMU MFSM	-2.65%-3.53%	n/a-3.53%	n/an/a	n/an/a
Max drawdown duration	IBMU MFSM	67d66d	n/a66d	n/an/a	n/an/a

Trading data

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	IBMU	MFSM
Last sale 9/14/2026 at 1:30 PM		$24.17
Previous close 09/11/2026		$24.16
Consolidated volume 09/11/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of August 31, 2026

1-year trailing difference

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MFSM

is actively managed and doesn’t replicate an index

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	IBMU	MFSM
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 9/14/2026 at 1:30 PM

Live

Closed

	IBMU	MFSM
Last price	–	$24.17
1D performance	–	+0.04%
AuM	$18.44 M	$101.93 M
E/R	0.1%	0.34%

Characteristics

	IBMU	MFSM
Management strategy	Passive	Active
Provider	iShares	MFS
Benchmark	S&P AMT-Free Municipal Series Callable-Adjusted 2032 Index	-
N° of holdings	102	103
Asset class	-	-
Trailing 12m distribution yield	Join	Join
Inception date	March 25, 2026	December 4, 2024
ESG	No	No

More IBMU data on Trackinsight

More MFSM data on Trackinsight

Exposure

Countries

IBMU

USA

25.74%

Other

74.26%

MFSM

USA

27.33%

Other

72.67%

Sectors

IBMU

Municipal

25.45%

Other

74.55%

MFSM

Municipal

27.33%

Other

72.67%

Diversification

IBMU

Total weight of top 15 holdings out of 15

10.43%

MFSM

Total weight of top 15 holdings out of 15

10.5%

Top 15 holdings

Data as of July 31, 2026

IBMU

US54641CBJ36

0.98%

US30382ANK42

0.82%

US60412AYF47

0.81%

University of Texas, 5% 15aug2034, USD (2023A)

0.81%

US546417JN78

0.73%

US386442ZP50

0.72%

US717893Y470

0.64%

New York Dormitory Authority, 4% 15mar2035, USD (2022A)

0.64%

US677523PB29

0.62%

US93974EWB81

0.61%

US469487VQ20

0.61%

US546585WY25

0.61%

US64613CBV90

0.61%

US746189C318

0.60%

US932889PR36

0.60%

MFSM

US49126RAC07

1.00%

US60416UV512

0.94%

Oklahoma Public Property Authority, 5% 1jun2034, USD (2026)

0.83%

Missouri Health and Educational Facilities Authority, 5% 1apr2036, USD (2026A)

0.83%

US708692CB22

0.75%

California Community Choice Financing Authority, 5% 1dec2055, USD (2025C)

0.72%

US763056DQ86

0.72%

US702538FE43

0.71%

US95235TAW36

0.69%

Paulding Hospital Authority, 5% 1apr2036, USD

0.55%

St. Cloud, 5% 1may2036, USD (2026)

0.55%

US164555EB63

0.55%

US49121DAB82

0.55%

US75989FAM59

0.55%

St. Tammany Parish Hospital Service District №1, 5% 1jul2056, USD (2026A)

0.55%

Frequently asked questions about IBMU and MFSM

Which ETF is bigger: IBMU or MFSM?

As of September 11, 2026, IBMU holds $18.44 M in assets under management (AUM), while MFSM manages $101.93 M.

What sectors do the IBMU and MFSM ETFs invest in?

IBMU leans toward sectors like Municipal. Meanwhile, MFSM focuses on Municipal.

What are the top holdings of the IBMU ETF and MFSM ETF?

IBMU top holdings include US54641CBJ36, US30382ANK42 and US60412AYF47. MFSM holds in its top three: US49126RAC07, US60416UV512 and Oklahoma Public Property Authority, 5% 1jun2034, USD (2026).

Which ETF is more diversified: IBMU or MFSM?

IBMU holds 417 securities with 10.43% of its assets in the top 15. MFSM has 409 securities and a top 15 weight of 10.5%.

What's the Fund | MFS Active Intermediate Muni Bond ETF (MFSM)

July 25, 2025

MFSM

IBMUvsMFSMETF Comparison

iShares iBonds Dec 2032 Term Muni Bond ETF

MFS Active Intermediate Muni Bond ETF

IBMU vs MFSM performance and flow charts

Performance

Cumulative Flows

Get all the metrics on this page, and more, through a reliable ETF data feed

Countries

Sectors

Diversification

Top 15 holdings

Which ETF is bigger: IBMU or MFSM?

As of September 11, 2026, IBMU holds $18.44 M in assets under management (AUM), while MFSM manages $101.93 M.

What sectors do the IBMU and MFSM ETFs invest in?

IBMU leans toward sectors like Municipal. Meanwhile, MFSM focuses on Municipal.

What are the top holdings of the IBMU ETF and MFSM ETF?

IBMU top holdings include US54641CBJ36, US30382ANK42 and US60412AYF47. MFSM holds in its top three: US49126RAC07, US60416UV512 and Oklahoma Public Property Authority, 5% 1jun2034, USD (2026).

Which ETF is more diversified: IBMU or MFSM?

IBMU holds 417 securities with 10.43% of its assets in the top 15. MFSM has 409 securities and a top 15 weight of 10.5%.

What's the Fund | MFS Active Intermediate Muni Bond ETF (MFSM)

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