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MMIDvsONEVETF Comparison

ETF 1
MMID

MFS Active Mid Cap ETF

This fund is part of
Uncategorized Equities
-0.8%
Full MMID fund page
VS
ETF 2
ONEV

SPDR Russell 1000 Low Volatility Focus ETF

This fund is part of
US Low Volatility
-0.42%
Full ONEV fund page

MFS Active Mid Cap ETF (MMID) belongs to the Uncategorized Equities segment. SPDR Russell 1000 Low Volatility Focus ETF (ONEV) is part of the US Low Volatility segment. MMID's top 3 sector exposures are Industrials, Information Technology and Financials. In contrast, ONEV's top sector exposures are Industrials, Health Care and Consumer Discretionary. MMID is more expensive with a Total Expense Ratio (TER) of 0.59%, versus 0.2% for ONEV. MMID is down -0.39% year-to-date (YTD) with +$502K in YTD flows. ONEV performs better with 1.63% YTD performance, and -$29M in YTD flows. Run a side-by-side ETF comparison of MMID and ONEV 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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MMID vs ONEV performance and flow charts

Performance

-5.0-4.0-3.0-2.0-1.00.01.0%Feb 11Feb 19Feb 26Mar 5Mar 12

Cumulative Flows

-1.5 M-1 M-0.5 M0 M0.5 MFeb 11Feb 19Feb 26Mar 5Mar 12

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Historic performance and flows
Data as of 03/11/2026
1M3MYTD1Y3Y5Y
Perf.
MMID
ONEV
-4.71%-3.74%
-2.03%+0.61%
-0.39%+1.63%
n/a+11.04%
n/a+41.21%
n/a+50.35%
Flows
MMID
ONEV
+$502K-$1M
+$502K-$53M
+$502K-$29M
--$86M
--$196M
--$162M
Volatility and drawdown
3M1Y3Y5Y
Volatility
MMID
ONEV
+13.40%+10.79%
n/a+14.94%
n/a+12.94%
n/a+14.76%
Max drawdown
MMID
ONEV
-5.33%-5.46%
n/a-10.87%
n/a-14.90%
n/a-18.48%
Max drawdown duration
MMID
ONEV
31d10d
n/a42d
n/a254d
n/a566d
Trading data

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MMID
ONEV
Last sale
3/13/2026 at 1:30 PM
$24.46
$135.16
Previous close
03/12/2026
$24.54
$135.29
Consolidated volume
03/12/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
Replication quality
Data as of February 27, 2026
1-year trailing difference

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MMID
is actively managed and doesn’t replicate an index

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MMID
ONEV
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst
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Main metrics
Last update 3/13/2026 at 1:30 PM
Live
Closed
MMID
ONEV
Last price
$24.46
$135.16
1D performance
-0.32%
-0.09%
AuM$32.59 M$535.81 M
E/R0.59%0.2%
Characteristics
MMID
ONEV
Management strategyActivePassive
ProviderMFSSPDR
Benchmark-Russell 1000 Low Volatility Focused Factor Index
N° of holdings88415
Asset class-Equities
Trailing 12m distribution yield
Join
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Inception dateSeptember 24, 2025December 2, 2015
ESGNoNo
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Exposure

Countries

MMID
USA
79.27%
Ireland
7.22%
Other
13.51%
ONEV
USA
92.84%
Other
7.16%

Sectors

MMID
Industrials
17.17%
Information Techn.
13.1%
Financials
12.45%
Health Care
8.06%
Consumer Discreti.
7.69%
Real Estate
7.32%
Other
34.21%
ONEV
Industrials
19.63%
Health Care
13.48%
Consumer Discreti.
12.87%
Financials
12.02%
Information Techn.
8.88%
Utilities
8.13%
Other
25%
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Diversification

MMID

Total weight of top 15 holdings out of 15

19.54%
ONEV

Total weight of top 15 holdings out of 15

13.17%

Top 15 holdings

Data as of January 31, 2026
MMID
ROSS STORES
1.54%
DIAMONDBACK ENERGY
1.40%
WABTEC
1.34%
NVENT ELECTRIC PLC
1.31%
CHENIERE ENERGY
1.31%
COGNIZANT TECHNOLOGY SOLUTN
1.29%
M&T BANK
1.29%
NORDSON
1.28%
SITEONE LANDSCAPE SUPPLY INC
1.28%
MICROCHIP TECHNOLOGY
1.27%
BURLINGTON STORES
1.26%
LITTELFUSE
1.26%
WW GRAINGER
1.26%
ALLIANT ENERGY
1.23%
STERIS
1.22%
ONEV
CARDINAL HEALTH
1.74%
AMERISOURCEBERGEN
1.11%
COGNIZANT TECHNOLOGY SOLUTN
1.01%
ARCH CAPITAL GROUP
0.96%
REGENERON PHARMACEUTICALS
0.91%
MCKESSON
0.89%
LEIDOS HOLDINGS INC
0.81%
T ROWE PRICE
0.78%
OMNICOM
0.77%
CIGNA
0.76%
NVR
0.72%
PULTEGROUP
0.70%
HUMANA
0.70%
DOLLAR GENERAL
0.67%
EXPEDITORS INTERNATIONAL OF WASN
0.65%
Frequently asked questions about MMID and ONEV

How have the MMID and ONEV ETFs performed in 2026?

As of March 11, 2026, MMID is down -0.39% year-to-date (YTD), while ONEV has returned 1.63%. That puts ONEV better performer ahead so far this year.

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

Year-to-date, the MMID ETF saw +$502K in flows, compared to -$29M for ONEV.

Which ETF is bigger: MMID or ONEV?

As of March 11, 2026, MMID holds $32.59 M in assets under management (AUM), while ONEV manages $535.81 M.

What sectors do the MMID and ONEV ETFs invest in?

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

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

MMID top holdings include ROSS STORES, DIAMONDBACK ENERGY and WABTEC. ONEV holds in its top three: CARDINAL HEALTH, AMERISOURCEBERGEN and COGNIZANT TECHNOLOGY SOLUTN.

Which ETF is more diversified: MMID or ONEV?

MMID holds 92 securities with 19.54% of its assets in the top 15. ONEV has 439 securities and a top 15 weight of 13.17%.

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