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MDYvsSMOXETF Comparison

ETF 1

MDY

State Street SPDR S&P MIDCAP 400 ETF Trust

This fund is part of

US Mid Cap

+0.85%

Full MDY fund page

VS

ETF 2

SMOX

Horizon Small/Mid Cap Core Equity ETF

This fund is part of

Options Strategies

+0.4%

Full SMOX fund page

State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) belongs to the US Mid Cap segment. Horizon Small/Mid Cap Core Equity ETF (SMOX) is part of the Options Strategies segment. MDY's top 3 sector exposures are Industrials, Information Technology and Financials. In contrast, SMOX's top sector exposures are Industrials, Financials and Information Technology. MDY is less expensive with a Total Expense Ratio (TER) of 0.23%, versus 0.75% for SMOX. MDY is up 15.29% year-to-date (YTD) with -$327M in YTD flows. SMOX performs better with 19.53% YTD performance, and +$11M in YTD flows. Run a side-by-side ETF comparison of MDY and SMOX 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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MDY vs SMOX 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 06/12/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	MDY SMOX	+3.72%+3.40%	+13.65%+14.41%	+15.29%+19.53%	+25.57%n/a	+52.39%n/a	+48.30%n/a
Flows	MDY SMOX	+$272M+$11M	+$440M+$12M	-$327M+$11M	-$176M-	-$262M-	-$1.95B-

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	MDY SMOX	+17.88%+17.06%	+15.94%n/a	+17.88%n/a	+19.91%n/a
Max drawdown	MDY SMOX	-4.24%-3.75%	-8.78%n/a	-23.91%n/a	-23.91%n/a
Max drawdown duration	MDY SMOX	26d6d	53dn/a	379dn/a	379dn/a

Trading data

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	MDY	SMOX
Last sale 6/12/2026 at 1:30 PM	$693.74	$30.07
Previous close 06/12/2026	$688.85	$29.81
Consolidated volume 06/12/2026
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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SMOX

is actively managed and doesn’t replicate an index

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	MDY	SMOX
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 6/12/2026 at 1:30 PM

Live

Closed

	MDY	SMOX
Last price	$693.74	$30.07
1D performance	+0.71%	+0.87%
AuM	$27.41 B	$72.78 M
E/R	0.23%	0.75%

Characteristics

	MDY	SMOX
Management strategy	Passive	Active
Provider	State Street Investment Management	Horizon Investments
Benchmark	S&P MidCap 400 Index	-
N° of holdings	381	267
Asset class	Equities	-
Trailing 12m distribution yield	Join	Join
Inception date	May 4, 1995	December 3, 2025
ESG	No	No

More MDY data on Trackinsight

More SMOX data on Trackinsight

Exposure

Countries

MDY

USA

92.53%

Other

7.47%

SMOX

USA

94.34%

Other

5.66%

Sectors

MDY

Industrials

22.12%

Information Techn.

14.67%

Financials

13.09%

Consumer Discreti.

10.5%

Health Care

8.3%

Other

31.31%

SMOX

Industrials

21.36%

Financials

13.95%

Information Techn.

11.8%

Consumer Discreti.

10.48%

Health Care

7.99%

Other

34.42%

Diversification

MDY

Total weight of top 15 holdings out of 15

10.57%

SMOX

Total weight of top 15 holdings out of 15

15.52%

Top 15 holdings

Data as of April 30, 2026

MDY

FLEX LTD

0.98%

TECHNIPFMC PLC

0.89%

CURTISS WRIGHT

0.77%

XPO LOGISTICS

0.75%

UTD THERAPEUT

0.71%

FABRINET

0.71%

MICHAEL STORES

0.70%

NVENT ELECTRIC PLC

0.67%

TWILIO

0.65%

PURE STORAGE

0.65%

WOODWARD

0.63%

ENTEGRIS

0.62%

CARPENTER TECHNOLOGY

0.62%

ATI INC

0.61%

US FOODS HOLDING CORP

0.60%

SMOX

US19247G1076

1.45%

CASEYS GENERAL STORES

1.40%

TECHNIPFMC PLC

1.37%

CURTISS WRIGHT

1.23%

UTD THERAPEUT

1.20%

TD SYNNEX

1.07%

TENET HEALTHCARE

0.98%

ALCOA CORP

0.94%

WOODWARD

0.94%

NVENT ELECTRIC PLC

0.92%

US FOODS HOLDING CORP

0.82%

TOLL BROTHERS

0.82%

TWILIO

0.80%

US71424F1057

0.79%

RBC BEARINGS

0.79%

Frequently asked questions about MDY and SMOX

How have the MDY and SMOX ETFs performed in 2026?

As of June 12, 2026, MDY is up 15.29% year-to-date (YTD), while SMOX has returned 19.53%. That puts SMOX better performer ahead so far this year.

Which ETF is attracting more investor money: MDY or SMOX?

Year-to-date, the MDY ETF saw -$327M in flows, compared to +$11M for SMOX.

Which ETF is bigger: MDY or SMOX?

As of June 12, 2026, MDY holds $27.41 B in assets under management (AUM), while SMOX manages $72.78 M.

What sectors do the MDY and SMOX ETFs invest in?

MDY leans toward sectors like Industrials, Information Technology and Financials. Meanwhile, SMOX focuses on Industrials, Financials and Information Technology.

What are the top holdings of the MDY ETF and SMOX ETF?

MDY top holdings include FLEX LTD, TECHNIPFMC PLC and CURTISS WRIGHT. SMOX holds in its top three: US19247G1076, CASEYS GENERAL STORES and TECHNIPFMC PLC.

MDYvsSMOXETF Comparison

State Street SPDR S&P MIDCAP 400 ETF Trust

Horizon Small/Mid Cap Core Equity ETF

MDY vs SMOX 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 MDY and SMOX ETFs performed in 2026?

As of June 12, 2026, MDY is up 15.29% year-to-date (YTD), while SMOX has returned 19.53%. That puts SMOX better performer ahead so far this year.

Which ETF is attracting more investor money: MDY or SMOX?

Year-to-date, the MDY ETF saw -$327M in flows, compared to +$11M for SMOX.

Which ETF is bigger: MDY or SMOX?

As of June 12, 2026, MDY holds $27.41 B in assets under management (AUM), while SMOX manages $72.78 M.

What sectors do the MDY and SMOX ETFs invest in?

MDY leans toward sectors like Industrials, Information Technology and Financials. Meanwhile, SMOX focuses on Industrials, Financials and Information Technology.

What are the top holdings of the MDY ETF and SMOX ETF?

MDY top holdings include FLEX LTD, TECHNIPFMC PLC and CURTISS WRIGHT. SMOX holds in its top three: US19247G1076, CASEYS GENERAL STORES and TECHNIPFMC PLC.

Which ETF is more diversified: MDY or SMOX?

MDY holds 400 securities with 10.57% of its assets in the top 15. SMOX has 284 securities and a top 15 weight of 15.52%.

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