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ONEVvsMMIDETF Comparison

ETF 1

ONEV

State Street SPDR Russell 1000 Low Volatility Focus ETF

This fund is part of

US Low Volatility

+0.79%

Full ONEV fund page

VS

ETF 2

MMID

MFS Active Mid Cap ETF

This fund is part of

Uncategorized Equities

+0.83%

Full MMID fund page

State Street SPDR Russell 1000 Low Volatility Focus ETF (ONEV) belongs to the US Low Volatility segment. MFS Active Mid Cap ETF (MMID) is part of the Uncategorized Equities segment. ONEV's top 3 sector exposures are Industrials, Health Care and Consumer Discretionary. In contrast, MMID's top sector exposures are Industrials, Information Technology and Financials. ONEV is less expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.59% for MMID. ONEV is up 5.34% year-to-date (YTD) with -$80M in YTD flows. MMID performs worse with 1.59% YTD performance, and +$1M in YTD flows. Run a side-by-side ETF comparison of ONEV 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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ONEV 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 04/30/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	ONEV MMID	+5.76%+4.92%	+2.08%-1.91%	+5.34%+1.59%	+14.60%n/a	+39.25%n/a	+47.53%n/a
Flows	ONEV MMID	-$51M+$509K	-$55M+$1M	-$80M+$1M	-$133M-	-$207M-	-$217M-

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	ONEV MMID	+12.08%+15.08%	+11.70%n/a	+12.81%n/a	+14.77%n/a
Max drawdown	ONEV MMID	-7.77%-7.98%	-7.77%n/a	-14.90%n/a	-18.48%n/a
Max drawdown duration	ONEV MMID	59d80d	59dn/a	254dn/a	566dn/a

Trading data

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	ONEV	MMID
Last sale 5/1/2026 at 1:30 PM	$138.92	$25.67
Previous close 04/29/2026	$139.55	$25.63
Consolidated volume 04/29/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of April 30, 2026

1-year trailing difference

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MMID

is actively managed and doesn’t replicate an index

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

Main metrics

Last update 5/1/2026 at 1:30 PM

Live

Closed

	ONEV	MMID
Last price	$138.92	$25.67
1D performance	-0.46%	+0.17%
AuM	$501.30 M	$33.67 M
E/R	0.2%	0.59%

Characteristics

	ONEV	MMID
Management strategy	Passive	Active
Provider	State Street Investment Management	MFS
Benchmark	Russell 1000 Low Volatility Focused Factor Index	-
N° of holdings	415	87
Asset class	Equities	-
Trailing 12m distribution yield	Join	Join
Inception date	December 2, 2015	September 24, 2025
ESG	No	No

More ONEV data on Trackinsight

More MMID data on Trackinsight

Exposure

Countries

ONEV

USA

92.5%

Other

7.5%

MMID

USA

80.22%

Other

19.78%

Sectors

ONEV

Industrials

19.14%

Health Care

13.34%

Consumer Discreti.

12.4%

Financials

11.83%

Utilities

8.95%

Information Techn.

8.76%

Other

25.58%

MMID

Industrials

16.9%

Information Techn.

12.45%

Financials

11.78%

Consumer Discreti.

8.03%

Utilities

7.5%

Health Care

7.38%

Other

35.96%

Diversification

ONEV

Total weight of top 15 holdings out of 15

12.71%

MMID

Total weight of top 15 holdings out of 15

21.89%

Top 15 holdings

Data as of March 31, 2026

ONEV

CARDINAL HEALTH

1.75%

AMERISOURCEBERGEN

0.99%

ARCH CAPITAL GROUP

0.98%

REGENERON PHARMACEUTICALS

0.97%

MCKESSON

0.94%

COGNIZANT TECHNOLOGY SOLUTN

0.77%

OMNICOM

0.77%

CIGNA

0.75%

UTD THERAPEUT

0.75%

JABIL CIRCUIT

0.68%

LEIDOS HOLDINGS INC

0.68%

T ROWE PRICE

0.68%

PULTEGROUP

0.67%

ELECTRONIC ARTS

0.66%

ALTRIA GROUP

0.66%

MMID

CHENIERE ENERGY

1.86%

DIAMONDBACK ENERGY

1.78%

ROSS STORES

1.65%

WABTEC

1.54%

BURLINGTON STORES

1.47%

NVENT ELECTRIC PLC

1.45%

ALLIANT ENERGY

1.41%

ELEMENT SOLUTIONS INC

1.39%

LITTELFUSE

1.39%

US71424F1057

1.35%

WW GRAINGER

1.34%

PPL

1.33%

GLOBL PAYMNTS

1.31%

AMEREN

1.31%

NORDSON

1.31%

Frequently asked questions about ONEV and MMID

How have the ONEV and MMID ETFs performed in 2026?

As of April 30, 2026, ONEV is up 5.34% year-to-date (YTD), while MMID has returned 1.59%. That puts ONEV better performer ahead so far this year.

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

Year-to-date, the ONEV ETF saw -$80M in flows, compared to +$1M for MMID.

Which ETF is bigger: ONEV or MMID?

As of April 30, 2026, ONEV holds $501.30 M in assets under management (AUM), while MMID manages $33.67 M.

What sectors do the ONEV and MMID ETFs invest in?

ONEV leans toward sectors like Industrials, Health Care and Consumer Discretionary. Meanwhile, MMID focuses on Industrials, Information Technology and Financials.

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

ONEV top holdings include CARDINAL HEALTH, AMERISOURCEBERGEN and ARCH CAPITAL GROUP. MMID holds in its top three: CHENIERE ENERGY, DIAMONDBACK ENERGY and ROSS STORES.

ONEVvsMMIDETF Comparison

State Street SPDR Russell 1000 Low Volatility Focus ETF

MFS Active Mid Cap ETF

ONEV 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 ONEV and MMID ETFs performed in 2026?

As of April 30, 2026, ONEV is up 5.34% year-to-date (YTD), while MMID has returned 1.59%. That puts ONEV better performer ahead so far this year.

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

Year-to-date, the ONEV ETF saw -$80M in flows, compared to +$1M for MMID.

Which ETF is bigger: ONEV or MMID?

As of April 30, 2026, ONEV holds $501.30 M in assets under management (AUM), while MMID manages $33.67 M.

What sectors do the ONEV and MMID ETFs invest in?

ONEV leans toward sectors like Industrials, Health Care and Consumer Discretionary. Meanwhile, MMID focuses on Industrials, Information Technology and Financials.

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

ONEV top holdings include CARDINAL HEALTH, AMERISOURCEBERGEN and ARCH CAPITAL GROUP. MMID holds in its top three: CHENIERE ENERGY, DIAMONDBACK ENERGY and ROSS STORES.

Which ETF is more diversified: ONEV or MMID?

ONEV holds 439 securities with 12.71% of its assets in the top 15. MMID has 90 securities and a top 15 weight of 21.89%.

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