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BRSMvsISCBETF Comparison

ETF 1

BRSM

MFS Blended Research Small-Mid Cap ETF

This fund is part of

US Multi-Factor

-0.23%

Full BRSM fund page

VS

ETF 2

ISCB

iShares Morningstar Small-Cap ETF

This fund is part of

US Small Cap

-0.57%

Full ISCB fund page

MFS Blended Research Small-Mid Cap ETF (BRSM) belongs to the US Multi-Factor segment. iShares Morningstar Small-Cap ETF (ISCB) is part of the US Small Cap segment. BRSM's top 3 sector exposures are Finance, Technology and Industrials. In contrast, ISCB's top sector exposures are Finance, Industrials and Healthcare. BRSM is more expensive with a Total Expense Ratio (TER) of 0.38%, versus 0.04% for ISCB. Run a side-by-side ETF comparison of BRSM and ISCB 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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BRSM vs ISCB 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 07/22/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	BRSM ISCB	-0.50%+1.10%	n/a+5.39%	n/a+14.88%	n/a+24.85%	n/a+49.70%	n/a+42.91%
Flows	BRSM ISCB	+$4M-$11M	--$146K	--$7M	--$13M	--$27M	--$23M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	BRSM ISCB	n/a+14.32%	n/a+16.60%	n/a+19.48%	n/a+21.35%
Max drawdown	BRSM ISCB	n/a-4.04%	n/a-9.38%	n/a-25.75%	n/a-30.04%
Max drawdown duration	BRSM ISCB	n/a16d	n/a65d	n/a289d	n/a1067d

Trading data

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	BRSM	ISCB
Last sale 7/23/2026 at 1:30 PM	$25.28	$73.75
Previous close 07/22/2026	$25.51	$74.22
Consolidated volume 07/22/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of June 30, 2026

1-year trailing difference

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BRSM

is actively managed and doesn’t replicate an index

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	BRSM	ISCB
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 7/23/2026 at 1:30 PM

Live

Closed

	BRSM	ISCB
Last price	$25.28	$73.75
1D performance	-0.92%	-0.63%
AuM	$26.03 M	$282.07 M
E/R	0.38%	0.04%

Characteristics

	BRSM	ISCB
Management strategy	Active	Passive
Provider	MFS	iShares
Benchmark	-	Morningstar US Small Cap Extended Index
N° of holdings	306	1561
Asset class	-	Equities
Trailing 12m distribution yield	Join	Join
Inception date	June 3, 2026	June 28, 2004
ESG	No	No

More BRSM data on Trackinsight

More ISCB data on Trackinsight

Exposure

Countries

BRSM

USA

92.05%

Other

7.95%

ISCB

USA

96.46%

Other

3.54%

Sectors

BRSM

Finance

23.44%

Technology

17.13%

Industrials

14%

Healthcare

13.48%

Non-Energy Materi.

7.87%

Other

24.09%

ISCB

Finance

24.76%

Industrials

14.62%

Healthcare

14.55%

Technology

14.15%

Other

31.91%

Diversification

BRSM

Total weight of top 15 holdings out of 15

14.22%

ISCB

Total weight of top 15 holdings out of 15

4.31%

Top 15 holdings

Data as of June 30, 2026

BRSM

MYR Group, Inc.

1.13%

Okta, Inc.

1.08%

Aramark

1.05%

Curtiss-Wright Corp.

1.00%

TechnipFMC plc

0.97%

Roku, Inc.

0.96%

Popular, Inc.

0.95%

Everest Group Ltd.

0.93%

nVent Electric Plc

0.91%

The Timken Co.

0.89%

Talen Energy Corp.

0.89%

Cathay General Bancorp

0.88%

UMB Financial Corp.

0.88%

Sandisk Corp.

0.86%

Universal Health Services, Inc.

0.85%

ISCB

BlackRock Cash Funds - Treasury

0.40%

Sterling Infrastructure, Inc.

0.40%

Okta, Inc.

0.36%

Guardant Health, Inc.

0.30%

Onto Innovation, Inc.

0.29%

Roku, Inc.

0.28%

Generac Holdings, Inc.

0.27%

QXO, Inc.

0.26%

Neurocrine Biosciences, Inc.

0.26%

Akamai Technologies, Inc.

0.26%

Masco Corp.

0.25%

SiTime Corp.

0.25%

Host Hotels & Resorts, Inc.

0.25%

IDEX Corp.

0.24%

Toll Brothers, Inc.

0.24%

Frequently asked questions about BRSM and ISCB

Which ETF is bigger: BRSM or ISCB?

As of July 22, 2026, BRSM holds $26.03 M in assets under management (AUM), while ISCB manages $282.07 M.

What sectors do the BRSM and ISCB ETFs invest in?

BRSM leans toward sectors like Finance, Technology and Industrials. Meanwhile, ISCB focuses on Finance, Industrials and Healthcare.

What are the top holdings of the BRSM ETF and ISCB ETF?

BRSM top holdings include MYR Group, Inc., Okta, Inc. and Aramark. ISCB holds in its top three: BlackRock Cash Funds - Treasury, Sterling Infrastructure, Inc. and Okta, Inc..

BRSMvsISCBETF Comparison

MFS Blended Research Small-Mid Cap ETF

iShares Morningstar Small-Cap ETF

BRSM vs ISCB 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: BRSM or ISCB?

As of July 22, 2026, BRSM holds $26.03 M in assets under management (AUM), while ISCB manages $282.07 M.

What sectors do the BRSM and ISCB ETFs invest in?

BRSM leans toward sectors like Finance, Technology and Industrials. Meanwhile, ISCB focuses on Finance, Industrials and Healthcare.

What are the top holdings of the BRSM ETF and ISCB ETF?

BRSM top holdings include MYR Group, Inc., Okta, Inc. and Aramark. ISCB holds in its top three: BlackRock Cash Funds - Treasury, Sterling Infrastructure, Inc. and Okta, Inc..

Which ETF is more diversified: BRSM or ISCB?

BRSM holds 306 securities with 14.22% of its assets in the top 15. ISCB has 1582 securities and a top 15 weight of 4.31%.

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