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IVOOvsMDYETF Comparison

ETF 1

IVOO

Vanguard S&P Mid-Cap 400 ETF

This fund is part of

US Mid Cap

-0.06%

Full IVOO fund page

VS

ETF 2

MDY

State Street SPDR S&P MIDCAP 400 ETF Trust

This fund is part of

US Mid Cap

-0.06%

Full MDY fund page

The ETFs Vanguard S&P Mid-Cap 400 ETF (IVOO) and State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) track the S&P MidCap 400 Total Return Index - USD and belong to the same industry segment: US Mid Cap. Both ETFs have the same top 3 sector exposures: Industrials, Information Technology and Financials. IVOO is less expensive with a Total Expense Ratio (TER) of 0.07%, versus 0.23% for MDY. IVOO is up 10.58% year-to-date (YTD) with +$169M in YTD flows. MDY performs worse with 10.45% YTD performance, and -$532M in YTD flows. Run a side-by-side ETF comparison of IVOO and MDY 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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IVOO vs MDY 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 04/27/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IVOO MDY	+10.10%+7.62%	+4.86%+4.81%	+10.58%+10.45%	+29.86%+29.40%	+54.23%+51.16%	+41.74%+40.67%
Flows	IVOO MDY	+$69M+$126M	+$178M+$23M	+$169M-$532M	+$318M-$1.01B	+$1.05B-$914M	+$1.30B-$1.76B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IVOO MDY	+17.96%+17.84%	+15.86%+15.80%	+17.90%+17.98%	+19.59%+19.85%
Max drawdown	IVOO MDY	-8.82%-8.78%	-8.82%-8.78%	-24.02%-23.91%	-24.02%-23.91%
Max drawdown duration	IVOO MDY	53d53d	53d53d	379d379d	379d379d

Trading data

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	IVOO	MDY
Last sale 4/27/2026 at 1:30 PM	$123.23	$664.80
Previous close 04/27/2026	$123.21	$664.47
Consolidated volume 04/27/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of March 31, 2026

1-year trailing difference

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

Main metrics

Last update 4/27/2026 at 1:30 PM

Live

Closed

	IVOO	MDY
Last price	$123.23	$664.80
1D performance	+0.02%	+0.05%
AuM	$3.47 B	$26.08 B
E/R	0.07%	0.23%

Characteristics

	IVOO	MDY
Management strategy	Passive	Passive
Provider	Vanguard	State Street Investment Management
Benchmark	S&P MidCap 400 Index	S&P MidCap 400 Index
N° of holdings	381	381
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	September 7, 2010	May 4, 1995
ESG	No	No

More IVOO data on Trackinsight

More MDY data on Trackinsight

Exposure

Countries

IVOO

USA

92.78%

Other

7.22%

MDY

USA

92.34%

Other

7.66%

Sectors

IVOO

Industrials

21.49%

Information Techn.

13.1%

Financials

13.02%

Consumer Discreti.

10.59%

Health Care

8.86%

Other

32.94%

MDY

Industrials

21.55%

Information Techn.

13.08%

Financials

13%

Consumer Discreti.

10.58%

Health Care

8.85%

Other

32.94%

Diversification

IVOO

Total weight of top 15 holdings out of 15

10.33%

MDY

Total weight of top 15 holdings out of 15

10.32%

Top 15 holdings

Data as of March 31, 2026

IVOO

TECHNIPFMC PLC

0.87%

CASEYS GENERAL STORES

0.84%

UTD THERAPEUT

0.79%

CURTISS WRIGHT

0.78%

FLEX LTD

0.75%

XPO LOGISTICS

0.71%

WOODWARD

0.66%

ROYAL GOLD

0.64%

US FOODS HOLDING CORP

0.63%

BURLINGTON STORES

0.63%

ATI INC

0.61%

MICHAEL STORES

0.61%

CARPENTER TECHNOLOGY

0.61%

NVENT ELECTRIC PLC

0.59%

TWILIO

0.59%

MDY

TECHNIPFMC PLC

0.87%

CASEYS GENERAL STORES

0.84%

UTD THERAPEUT

0.79%

CURTISS WRIGHT

0.78%

FLEX LTD

0.75%

XPO LOGISTICS

0.71%

WOODWARD

0.66%

ROYAL GOLD

0.64%

US FOODS HOLDING CORP

0.63%

BURLINGTON STORES

0.63%

ATI INC

0.61%

MICHAEL STORES

0.61%

CARPENTER TECHNOLOGY

0.61%

NVENT ELECTRIC PLC

0.59%

TWILIO

0.59%

Frequently asked questions about IVOO and MDY

How have the IVOO and MDY ETFs performed in 2026?

As of April 27, 2026, IVOO is up 10.58% year-to-date (YTD), while MDY has returned 10.45%. That puts IVOO better performer ahead so far this year.

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

Year-to-date, the IVOO ETF saw +$169M in flows, compared to -$532M for MDY.

Which ETF is more volatile: IVOO or MDY?

Over the past year, IVOO had a volatility of 15.86%, while MDY experienced 15.8%.

Which ETF is bigger: IVOO or MDY?

As of April 27, 2026, IVOO holds $3.47 B in assets under management (AUM), while MDY manages $26.08 B.

What sectors do the IVOO and MDY ETFs invest in?

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

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

IVOO top holdings include TECHNIPFMC PLC, CASEYS GENERAL STORES and UTD THERAPEUT. MDY holds in its top three: TECHNIPFMC PLC, CASEYS GENERAL STORES and UTD THERAPEUT.

IVOOvsMDYETF Comparison

Vanguard S&P Mid-Cap 400 ETF

State Street SPDR S&P MIDCAP 400 ETF Trust

IVOO vs MDY 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 IVOO and MDY ETFs performed in 2026?

As of April 27, 2026, IVOO is up 10.58% year-to-date (YTD), while MDY has returned 10.45%. That puts IVOO better performer ahead so far this year.

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

Year-to-date, the IVOO ETF saw +$169M in flows, compared to -$532M for MDY.

Which ETF is more volatile: IVOO or MDY?

Over the past year, IVOO had a volatility of 15.86%, while MDY experienced 15.8%.

Which ETF is bigger: IVOO or MDY?

As of April 27, 2026, IVOO holds $3.47 B in assets under management (AUM), while MDY manages $26.08 B.

What sectors do the IVOO and MDY ETFs invest in?

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

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

IVOO top holdings include TECHNIPFMC PLC, CASEYS GENERAL STORES and UTD THERAPEUT. MDY holds in its top three: TECHNIPFMC PLC, CASEYS GENERAL STORES and UTD THERAPEUT.

Which ETF is more diversified: IVOO or MDY?

IVOO holds 400 securities with 10.33% of its assets in the top 15. MDY has 399 securities and a top 15 weight of 10.32%.

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