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BRSMvsISCBETF Comparison

ETF 1

BRSM

MFS Blended Research Small-Mid Cap ETF

This fund is part of

US Multi-Factor

+0.12%

Full BRSM fund page

VS

ETF 2

ISCB

iShares Morningstar Small-Cap ETF

This fund is part of

US Small Cap

+0.22%

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 Healthcare. In contrast, ISCB's top sector exposures are Finance, Healthcare and Technology. 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 09/02/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	BRSM ISCB	+0.92%-1.79%	+4.26%+3.84%	n/a+16.80%	n/a+21.48%	n/a+58.17%	n/a+40.24%
Flows	BRSM ISCB	+$518K-	+$27M-$146K	--$7M	--$10M	--$25M	--$26M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	BRSM ISCB	+15.51%+13.81%	n/a+16.07%	n/a+19.41%	n/a+21.30%
Max drawdown	BRSM ISCB	-3.66%-4.31%	n/a-9.38%	n/a-25.75%	n/a-30.04%
Max drawdown duration	BRSM ISCB	17d19d	n/a65d	n/a289d	n/a1067d

Trading data

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	BRSM	ISCB
Last sale 9/4/2026 at 1:30 PM	$26.11	$75.47
Previous close 09/03/2026	$26.11	$75.42
Consolidated volume 09/03/2026
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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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 9/4/2026 at 1:30 PM

Live

Closed

	BRSM	ISCB
Last price	$26.11	$75.47
1D performance	+0.00%	+0.07%
AuM	$27.51 M	$286.78 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	311	1554
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

91.96%

Other

8.04%

ISCB

USA

96.5%

Other

3.5%

Sectors

BRSM

Finance

25.21%

Technology

14.85%

Healthcare

13.87%

Industrials

12.31%

Non-Energy Materi.

8.38%

Other

25.38%

ISCB

Finance

25.95%

Healthcare

14.99%

Technology

13.35%

Industrials

13.2%

Other

32.51%

Diversification

BRSM

Total weight of top 15 holdings out of 15

14.45%

ISCB

Total weight of top 15 holdings out of 15

4.21%

Top 15 holdings

Data as of July 31, 2026

BRSM

Aramark

1.08%

TechnipFMC plc

1.07%

Lincoln National Corp.

1.04%

Popular, Inc.

1.04%

Roku, Inc.

1.03%

Everest Group Ltd.

1.00%

Universal Health Services, Inc.

0.99%

Box, Inc.

0.96%

Cathay General Bancorp

0.92%

UMB Financial Corp.

0.92%

Bill Holdings, Inc.

0.91%

Talen Energy Corp.

0.91%

The Timken Co.

0.87%

Essential Properties Realty Trust, Inc.

0.86%

nVent Electric Plc

0.85%

ISCB

Okta, Inc.

0.37%

BlackRock Cash Funds - Treasury

0.36%

Guardant Health, Inc.

0.31%

Roku, Inc.

0.30%

Neurocrine Biosciences, Inc.

0.29%

Sterling Infrastructure, Inc.

0.28%

Best Buy Co., Inc.

0.27%

Host Hotels & Resorts, Inc.

0.27%

Jones Lang LaSalle, Inc.

0.26%

Akamai Technologies, Inc.

0.26%

Jazz Pharmaceuticals Plc

0.26%

IDEX Corp.

0.25%

Nutanix, Inc.

0.25%

Atlassian Corp.

0.24%

Healthpeak Properties, Inc.

0.24%

Frequently asked questions about BRSM and ISCB

Which ETF is bigger: BRSM or ISCB?

As of September 2, 2026, BRSM holds $27.51 M in assets under management (AUM), while ISCB manages $286.78 M.

What sectors do the BRSM and ISCB ETFs invest in?

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

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

BRSM top holdings include Aramark, TechnipFMC plc and Lincoln National Corp.. ISCB holds in its top three: Okta, Inc., BlackRock Cash Funds - Treasury and Guardant Health, 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 September 2, 2026, BRSM holds $27.51 M in assets under management (AUM), while ISCB manages $286.78 M.

What sectors do the BRSM and ISCB ETFs invest in?

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

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

BRSM top holdings include Aramark, TechnipFMC plc and Lincoln National Corp.. ISCB holds in its top three: Okta, Inc., BlackRock Cash Funds - Treasury and Guardant Health, Inc..

Which ETF is more diversified: BRSM or ISCB?

BRSM holds 311 securities with 14.45% of its assets in the top 15. ISCB has 1571 securities and a top 15 weight of 4.21%.

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