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IWSvsMMIDETF Comparison

ETF 1

IWS

iShares Russell Mid-Cap Value ETF

This fund is part of

US Mid Cap Value

+0%

Full IWS fund page

VS

ETF 2

MMID

MFS Active Mid Cap ETF

This fund is part of

Uncategorized Equities

+0%

Full MMID fund page

iShares Russell Mid-Cap Value ETF (IWS) belongs to the US Mid Cap Value segment. MFS Active Mid Cap ETF (MMID) is part of the Uncategorized Equities segment. IWS's top 3 sector exposures are Industrials, Financials and Information Technology. In contrast, MMID's top sector exposures are Industrials, Information Technology and Financials. IWS is less expensive with a Total Expense Ratio (TER) of 0.23%, versus 0.59% for MMID. IWS is up 16.29% year-to-date (YTD) with -$1.03B in YTD flows. MMID performs worse with 4.26% YTD performance, and +$1M in YTD flows. Run a side-by-side ETF comparison of IWS and MMID 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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IWS vs MMID 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 06/18/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IWS MMID	+5.13%+5.58%	+12.60%+6.11%	+16.29%+4.26%	+28.63%n/a	+59.20%n/a	+58.81%n/a
Flows	IWS MMID	-$51M-$3K	-$923M+$512K	-$1.03B+$1M	-$977M-	-$2.74B-	-$3.51B-

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IWS MMID	+14.86%+13.40%	+13.56%n/a	+15.41%n/a	+17.36%n/a
Max drawdown	IWS MMID	-2.87%-5.64%	-7.51%n/a	-20.45%n/a	-21.32%n/a
Max drawdown duration	IWS MMID	16d52d	44dn/a	269dn/a	785dn/a

Trading data

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	IWS	MMID
Last sale 6/18/2026 at 1:30 PM	$162.95	$26.01
Previous close 06/18/2026	$161.45	$25.80
Consolidated volume 06/18/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of May 29, 2026

1-year trailing difference

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MMID

is actively managed and doesn’t replicate an index

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	IWS	MMID
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 6/18/2026 at 1:30 PM

Live

Closed

	IWS	MMID
Last price	$162.95	$26.01
1D performance	+0.93%	+0.82%
AuM	$15.43 B	$34.56 M
E/R	0.23%	0.59%

Characteristics

	IWS	MMID
Management strategy	Passive	Active
Provider	iShares	MFS
Benchmark	Russell Midcap Value Index	-
N° of holdings	636	88
Asset class	Equities	-
Trailing 12m distribution yield	Join	Join
Inception date	July 17, 2001	September 24, 2025
ESG	No	No

More IWS data on Trackinsight

More MMID data on Trackinsight

Exposure

Countries

IWS

USA

93.95%

Other

6.05%

MMID

USA

79.28%

Ireland

7.17%

Other

13.55%

Sectors

IWS

Industrials

15.63%

Financials

13.64%

Information Techn.

13.19%

Real Estate

8.04%

Energy

7.82%

Consumer Discreti.

7.67%

Other

34.01%

MMID

Industrials

18.07%

Information Techn.

13%

Financials

11.89%

Consumer Discreti.

8.2%

Real Estate

7.29%

Utilities

7.16%

Other

34.39%

Diversification

IWS

Total weight of top 15 holdings out of 15

12.25%

MMID

Total weight of top 15 holdings out of 15

21.87%

Top 15 holdings

Data as of April 30, 2026

IWS

US80004C2008

1.49%

WESTERN DIGITAL

1.40%

CORNING

1.22%

CUMMINS

0.88%

BANK OF NEW YORK MELLON

0.81%

VALERO ENERGY

0.73%

MARATHON PETROLEUM

0.71%

CIENA

0.71%

DIGITAL REALTY REIT

0.66%

BAKER HUGHES

0.66%

PHILLIPS 66

0.64%

KINDER MORGAN

0.61%

WARNER BROS. DISCOVERY

0.60%

UNITED RENTALS

0.58%

KEYSIGHT TECHNOLOGIES

0.57%

MMID

DIAMONDBACK ENERGY

1.73%

CHENIERE ENERGY

1.66%

ROSS STORES

1.65%

NVENT ELECTRIC PLC

1.63%

LITTELFUSE

1.53%

ELEMENT SOLUTIONS INC

1.51%

WABTEC

1.43%

MICROCHIP TECHNOLOGY

1.42%

BURLINGTON STORES

1.39%

ALLIANT ENERGY

1.37%

WW GRAINGER

1.37%

ENTEGRIS

1.31%

PPL

1.30%

SITEONE LANDSCAPE SUPPLY INC

1.29%

AMEREN

1.28%

Frequently asked questions about IWS and MMID

How have the IWS and MMID ETFs performed in 2026?

As of June 18, 2026, IWS is up 16.29% year-to-date (YTD), while MMID has returned 4.26%. That puts IWS better performer ahead so far this year.

Which ETF is attracting more investor money: IWS or MMID?

Year-to-date, the IWS ETF saw -$1.03B in flows, compared to +$1M for MMID.

Which ETF is bigger: IWS or MMID?

As of June 18, 2026, IWS holds $15.43 B in assets under management (AUM), while MMID manages $34.56 M.

What sectors do the IWS and MMID ETFs invest in?

IWS leans toward sectors like Industrials, Financials and Information Technology. Meanwhile, MMID focuses on Industrials, Information Technology and Financials.

IWSvsMMIDETF Comparison

iShares Russell Mid-Cap Value ETF

MFS Active Mid Cap ETF

IWS vs MMID 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

How have the IWS and MMID ETFs performed in 2026?

As of June 18, 2026, IWS is up 16.29% year-to-date (YTD), while MMID has returned 4.26%. That puts IWS better performer ahead so far this year.

Which ETF is attracting more investor money: IWS or MMID?

Year-to-date, the IWS ETF saw -$1.03B in flows, compared to +$1M for MMID.

Which ETF is bigger: IWS or MMID?

As of June 18, 2026, IWS holds $15.43 B in assets under management (AUM), while MMID manages $34.56 M.

What sectors do the IWS and MMID ETFs invest in?

IWS leans toward sectors like Industrials, Financials and Information Technology. Meanwhile, MMID focuses on Industrials, Information Technology and Financials.

What are the top holdings of the IWS ETF and MMID ETF?

IWS top holdings include US80004C2008, WESTERN DIGITAL and CORNING. MMID holds in its top three: DIAMONDBACK ENERGY, CHENIERE ENERGY and ROSS STORES.

Which ETF is more diversified: IWS or MMID?

IWS holds 713 securities with 12.25% of its assets in the top 15. MMID has 90 securities and a top 15 weight of 21.87%.

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