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BRSMvsESMLETF Comparison

ETF 1

BRSM

MFS Blended Research Small-Mid Cap ETF

This fund is part of

US Multi-Factor

+0.62%

Full BRSM fund page

VS

ETF 2

ESML

iShares ESG Aware MSCI USA Small-Cap ETF

This fund is part of

US Small Cap

+1.49%

Full ESML fund page

MFS Blended Research Small-Mid Cap ETF (BRSM) belongs to the US Multi-Factor segment. iShares ESG Aware MSCI USA Small-Cap ETF (ESML) is part of the US Small Cap segment. BRSM's top 3 sector exposures are Finance, Technology and Healthcare. In contrast, ESML's top sector exposures are Finance, Healthcare and Technology. BRSM is more expensive with a Total Expense Ratio (TER) of 0.38%, versus 0.17% for ESML. Run a side-by-side ETF comparison of BRSM and ESML 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 ESML 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 10/20/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	BRSM ESML	-0.06%-0.92%	-0.65%-1.34%	n/a+15.56%	n/a+16.99%	n/a+71.61%	n/a+37.75%
Flows	BRSM ESML	--$37M	+$2M-$38M	-+$374M	-+$370M	-+$589M	-+$995M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	BRSM ESML	+12.65%+13.90%	n/a+16.42%	n/a+19.51%	n/a+21.19%
Max drawdown	BRSM ESML	-7.38%-8.35%	n/a-9.05%	n/a-26.61%	n/a-28.52%
Max drawdown duration	BRSM ESML	65d65d	n/a46d	n/a296d	n/a980d

Trading data

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	BRSM	ESML
Last sale 10/21/2026 at 1:30 PM	$25.32	$52.94
Previous close 10/20/2026	$25.20	$52.76
Consolidated volume 10/20/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of September 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	ESML
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 10/21/2026 at 1:30 PM

Live

Closed

	BRSM	ESML
Last price	$25.32	$52.94
1D performance	+0.49%	+0.34%
AuM	$26.71 M	$2.73 B
E/R	0.38%	0.17%

Characteristics

	BRSM	ESML
Management strategy	Active	Passive
Provider	MFS	iShares
Benchmark	-	MSCI USA Small Cap Extended ESG Focus Index
N° of holdings	311	909
Asset class	-	Equities
Trailing 12m distribution yield	Join	Join
Inception date	June 3, 2026	April 10, 2018
ESG	No	Yes

More BRSM data on Trackinsight

More ESML data on Trackinsight

Exposure

Countries

BRSM

USA

92.06%

Other

7.94%

ESML

USA

95.64%

Other

4.36%

Sectors

BRSM

Finance

24.53%

Technology

15.77%

Healthcare

14.22%

Industrials

11.6%

Non-Energy Materi.

8.73%

Other

25.15%

ESML

Finance

22.04%

Healthcare

15.23%

Technology

15.1%

Industrials

13.93%

Non-Energy Materi.

7.12%

Other

26.58%

Diversification

BRSM

Total weight of top 15 holdings out of 15

14.29%

ESML

Total weight of top 15 holdings out of 15

6.06%

Top 15 holdings

Data as of August 31, 2026

BRSM

TechnipFMC plc

1.14%

Roku, Inc.

1.09%

Box, Inc.

1.06%

Aramark

1.04%

Universal Health Services, Inc.

0.98%

Everest Group Ltd.

0.98%

Bill Holdings, Inc.

0.97%

Popular, Inc.

0.97%

Lincoln National Corp.

0.95%

UGI Corp.

0.88%

UMB Financial Corp.

0.87%

Cathay General Bancorp

0.87%

Okta, Inc.

0.83%

Gap, Inc.

0.83%

AGCO Corp.

0.82%

ESML

Moderna, Inc.

0.74%

Assurant, Inc.

0.62%

US Foods Holding Corp.

0.57%

Ovintiv, Inc.

0.46%

ONE Gas, Inc.

0.39%

Royal Gold, Inc.

0.38%

Jones Lang LaSalle, Inc.

0.36%

Trimble, Inc.

0.33%

Guardant Health, Inc.

0.32%

Nutanix, Inc.

0.32%

Invesco Ltd.

0.32%

The Clorox Co.

0.32%

Dynatrace, Inc.

0.32%

Equitable Holdings, Inc.

0.31%

Unum Group

0.31%

Frequently asked questions about BRSM and ESML

Which ETF is bigger: BRSM or ESML?

As of October 20, 2026, BRSM holds $26.71 M in assets under management (AUM), while ESML manages $2.73 B.

What sectors do the BRSM and ESML ETFs invest in?

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

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

BRSM top holdings include TechnipFMC plc, Roku, Inc. and Box, Inc.. ESML holds in its top three: Moderna, Inc., Assurant, Inc. and US Foods Holding Corp..

BRSMvsESMLETF Comparison

MFS Blended Research Small-Mid Cap ETF

iShares ESG Aware MSCI USA Small-Cap ETF

BRSM vs ESML 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 ESML?

As of October 20, 2026, BRSM holds $26.71 M in assets under management (AUM), while ESML manages $2.73 B.

What sectors do the BRSM and ESML ETFs invest in?

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

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

BRSM top holdings include TechnipFMC plc, Roku, Inc. and Box, Inc.. ESML holds in its top three: Moderna, Inc., Assurant, Inc. and US Foods Holding Corp..

Which ETF is more diversified: BRSM or ESML?

BRSM holds 311 securities with 14.29% of its assets in the top 15. ESML has 910 securities and a top 15 weight of 6.06%.

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