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MDYGvsIVOOETF Comparison

ETF 1

MDYG

State Street SPDR S&P 400 Mid Cap Growth ETF

This fund is part of

US Mid Cap Growth

+1.05%

Full MDYG fund page

VS

ETF 2

IVOO

Vanguard S&P Mid-Cap 400 ETF

This fund is part of

US Mid Cap

+0.12%

Full IVOO fund page

State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) belongs to the US Mid Cap Growth segment. Vanguard S&P Mid-Cap 400 ETF (IVOO) is part of the US Mid Cap segment. MDYG's top 3 sector exposures are Technology, Industrials and Healthcare. In contrast, IVOO's top sector exposures are Finance, Industrials and Technology. MDYG is more expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.07% for IVOO. MDYG is up 13.48% year-to-date (YTD) with +$78M in YTD flows. IVOO performs worse with 13.14% YTD performance, and +$577M in YTD flows. Run a side-by-side ETF comparison of MDYG and IVOO 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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MDYG vs IVOO 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 11/03/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	MDYG IVOO	-2.49%+0.64%	-3.23%-2.34%	+13.48%+13.14%	+14.81%+15.64%	+56.23%+55.81%	+31.16%+37.83%
Flows	MDYG IVOO	+$42M+$99M	+$85M+$209M	+$78M+$577M	+$105M+$655M	+$6M+$1.43B	+$464M+$1.59B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	MDYG IVOO	+15.11%+12.05%	+17.66%+14.94%	+18.85%+17.51%	+20.76%+19.43%
Max drawdown	MDYG IVOO	-10.14%-8.25%	-10.14%-8.82%	-25.46%-24.02%	-29.25%-24.02%
Max drawdown duration	MDYG IVOO	78d79d	78d53d	379d379d	834d379d

Trading data

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	MDYG	IVOO
Last sale 11/4/2026 at 2:30 PM	$104.50	$126.21
Previous close 11/03/2026	$104.53	$125.39
Consolidated volume 11/03/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of October 30, 2026

1-year trailing difference

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

Main metrics

Last update 11/4/2026 at 2:30 PM

Live

Closed

	MDYG	IVOO
Last price	$104.50	$126.21
1D performance	-0.03%	+0.65%
AuM	$2.83 B	$3.94 B
E/R	0.15%	0.07%

Characteristics

	MDYG	IVOO
Management strategy	Passive	Passive
Provider	State Street Investment Management	Vanguard
Benchmark	S&P MidCap 400 Growth Index	S&P MidCap 400 Index
N° of holdings	247	400
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	November 8, 2005	September 7, 2010
ESG	No	No

More MDYG data on Trackinsight

More IVOO data on Trackinsight

Exposure

Countries

MDYG

USA

94.63%

Other

5.37%

IVOO

USA

95.5%

Other

4.5%

Sectors

MDYG

Technology

21.77%

Industrials

19.09%

Healthcare

15.65%

Finance

14.45%

Non-Energy Materi.

9.29%

Other

19.74%

IVOO

Finance

22.33%

Industrials

16.38%

Technology

15.68%

Non-Energy Materi.

10.05%

Healthcare

10.01%

Other

25.55%

Diversification

MDYG

Total weight of top 15 holdings out of 15

20.18%

IVOO

Total weight of top 15 holdings out of 15

10.74%

Top 15 holdings

Data as of September 30, 2026

MDYG

Twilio, Inc.

2.52%

Okta, Inc.

1.95%

TechnipFMC plc

1.50%

nVent Electric Plc

1.46%

ATI, Inc.

1.45%

United Therapeutics Corp.

1.31%

XPO, Inc.

1.16%

Tenet Healthcare Corp.

1.16%

Roku, Inc.

1.13%

Curtiss-Wright Corp.

1.13%

Royal Gold, Inc.

1.12%

MACOM Technology Solutions Holdings, Inc.

1.11%

Woodward, Inc.

1.09%

Carpenter Technology Corp.

1.08%

Coeur Mining, Inc.

1.02%

IVOO

Twilio, Inc.

1.32%

Okta, Inc.

1.02%

TechnipFMC plc

0.78%

nVent Electric Plc

0.76%

ATI, Inc.

0.76%

Entegris, Inc.

0.69%

United Therapeutics Corp.

0.68%

XPO, Inc.

0.60%

Tenet Healthcare Corp.

0.60%

TD SYNNEX Corp.

0.60%

Roku, Inc.

0.59%

Curtiss-Wright Corp.

0.59%

Royal Gold, Inc.

0.59%

US Foods Holding Corp.

0.58%

Roivant Sciences Ltd.

0.58%

Frequently asked questions about MDYG and IVOO

MDYGvsIVOOETF Comparison

State Street SPDR S&P 400 Mid Cap Growth ETF

Vanguard S&P Mid-Cap 400 ETF

MDYG vs IVOO performance and flow charts

Performance

Cumulative Flows

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Countries

Sectors

Diversification

Top 15 holdings

How have the MDYG and IVOO ETFs performed in 2026?

As of November 3, 2026, MDYG is up 13.48% year-to-date (YTD), while IVOO has returned 13.14%. That puts MDYG better performer ahead so far this year.

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

Year-to-date, the MDYG ETF saw +$78M in flows, compared to +$577M for IVOO.

Which ETF is more volatile: MDYG or IVOO?

Over the past year, MDYG had a volatility of 17.66%, while IVOO experienced 14.94%.

Which ETF is bigger: MDYG or IVOO?

As of November 3, 2026, MDYG holds $2.83 B in assets under management (AUM), while IVOO manages $3.94 B.

What sectors do the MDYG and IVOO ETFs invest in?

MDYG leans toward sectors like Technology, Industrials and Healthcare. Meanwhile, IVOO focuses on Finance, Industrials and Technology.

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

MDYG top holdings include Twilio, Inc., Okta, Inc. and TechnipFMC plc. IVOO holds in its top three: Twilio, Inc., Okta, Inc. and TechnipFMC plc.

Which ETF is more diversified: MDYG or IVOO?

MDYG holds 247 securities with 20.18% of its assets in the top 15. IVOO has 400 securities and a top 15 weight of 10.74%.

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