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IJKvsMDYETF Comparison

ETF 1

IJK

iShares S&P Mid-Cap 400 Growth ETF

This fund is part of

US Mid Cap Growth

+0.82%

Full IJK fund page

VS

ETF 2

MDY

State Street SPDR S&P MIDCAP 400 ETF Trust

This fund is part of

US Mid Cap

+0.69%

Full MDY fund page

iShares S&P Mid-Cap 400 Growth ETF (IJK) belongs to the US Mid Cap Growth segment. State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) is part of the US Mid Cap segment. IJK's top 3 sector exposures are Industrials, Technology and Healthcare. In contrast, MDY's top sector exposures are Finance, Industrials and Technology. IJK is less expensive with a Total Expense Ratio (TER) of 0.16%, versus 0.23% for MDY. IJK is up 13.87% year-to-date (YTD) with -$2M in YTD flows. MDY performs worse with 11.54% YTD performance, and -$1.16B in YTD flows. Run a side-by-side ETF comparison of IJK 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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IJK 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 09/17/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IJK MDY	-7.54%-6.39%	-3.54%-2.08%	+13.87%+11.54%	+15.28%+13.25%	+51.74%+47.90%	+41.14%+45.65%
Flows	IJK MDY	-$51M-$2M	-$182M-$709M	-$2M-$1.16B	-$95M-$1.52B	-$765M-$1.21B	-$777M-$1.88B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IJK MDY	+15.48%+11.87%	+17.81%+15.39%	+18.99%+17.78%	+20.80%+19.72%
Max drawdown	IJK MDY	-8.25%-7.14%	-9.92%-8.78%	-25.48%-23.91%	-29.27%-23.91%
Max drawdown duration	IJK MDY	31d32d	45d53d	379d379d	834d379d

Trading data

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	IJK	MDY
Last sale 9/17/2026 at 1:30 PM	$109.87	$669.43
Previous close 09/17/2026	$109.14	$665.88
Consolidated volume 09/17/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of August 31, 2026

1-year trailing difference

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

Main metrics

Last update 9/17/2026 at 1:30 PM

Live

Closed

	IJK	MDY
Last price	$109.87	$669.43
1D performance	+0.67%	+0.53%
AuM	$10.39 B	$25.65 B
E/R	0.16%	0.23%

Characteristics

	IJK	MDY
Management strategy	Passive	Passive
Provider	iShares	State Street Investment Management
Benchmark	S&P MidCap 400 Growth Index	S&P MidCap 400 Index
N° of holdings	246	400
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	July 24, 2000	May 4, 1995
ESG	No	No

More IJK data on Trackinsight

More MDY data on Trackinsight

Exposure

Countries

IJK

USA

94.94%

Other

5.06%

MDY

USA

95.79%

Other

4.21%

Sectors

IJK

Industrials

20.51%

Technology

18.91%

Healthcare

15.86%

Finance

14.47%

Non-Energy Materi.

9.28%

Other

20.97%

MDY

Finance

23%

Industrials

16.96%

Technology

13.52%

Non-Energy Materi.

10.18%

Healthcare

9.95%

Other

26.4%

Diversification

IJK

Total weight of top 15 holdings out of 15

19.32%

MDY

Total weight of top 15 holdings out of 15

10.46%

Top 15 holdings

Data as of July 31, 2026

IJK

Twilio, Inc.

1.59%

TechnipFMC plc

1.51%

Curtiss-Wright Corp.

1.45%

Carpenter Technology Corp.

1.38%

ATI, Inc.

1.36%

Everpure, Inc.

1.30%

Okta, Inc.

1.29%

nVent Electric Plc

1.29%

XPO, Inc.

1.29%

United Therapeutics Corp.

1.23%

Tenet Healthcare Corp.

1.20%

Woodward, Inc.

1.17%

RB Global, Inc.

1.13%

MasTec, Inc.

1.10%

Roku, Inc.

1.05%

MDY

Illumina, Inc.

0.87%

Twilio, Inc.

0.84%

TechnipFMC plc

0.80%

Curtiss-Wright Corp.

0.75%

Carpenter Technology Corp.

0.72%

ATI, Inc.

0.71%

nVent Electric Plc

0.69%

Everpure, Inc.

0.68%

Okta, Inc.

0.66%

XPO, Inc.

0.66%

Burlington Stores, Inc.

0.65%

US Foods Holding Corp.

0.62%

United Therapeutics Corp.

0.61%

Tenet Healthcare Corp.

0.61%

Woodward, Inc.

0.60%

Frequently asked questions about IJK and MDY

How have the IJK and MDY ETFs performed in 2026?

As of September 17, 2026, IJK is up 13.87% year-to-date (YTD), while MDY has returned 11.54%. That puts IJK better performer ahead so far this year.

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

Year-to-date, the IJK ETF saw -$2M in flows, compared to -$1.16B for MDY.

Which ETF is more volatile: IJK or MDY?

Over the past year, IJK had a volatility of 17.81%, while MDY experienced 15.39%.

Which ETF is bigger: IJK or MDY?

As of September 17, 2026, IJK holds $10.39 B in assets under management (AUM), while MDY manages $25.65 B.

What sectors do the IJK and MDY ETFs invest in?

IJK leans toward sectors like Industrials, Technology and Healthcare. Meanwhile, MDY focuses on Finance, Industrials and Technology.

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

IJK top holdings include Twilio, Inc., TechnipFMC plc and Curtiss-Wright Corp.. MDY holds in its top three: Illumina, Inc., Twilio, Inc. and TechnipFMC plc.

IJKvsMDYETF Comparison

iShares S&P Mid-Cap 400 Growth ETF

State Street SPDR S&P MIDCAP 400 ETF Trust

IJK 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 IJK and MDY ETFs performed in 2026?

As of September 17, 2026, IJK is up 13.87% year-to-date (YTD), while MDY has returned 11.54%. That puts IJK better performer ahead so far this year.

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

Year-to-date, the IJK ETF saw -$2M in flows, compared to -$1.16B for MDY.

Which ETF is more volatile: IJK or MDY?

Over the past year, IJK had a volatility of 17.81%, while MDY experienced 15.39%.

Which ETF is bigger: IJK or MDY?

As of September 17, 2026, IJK holds $10.39 B in assets under management (AUM), while MDY manages $25.65 B.

What sectors do the IJK and MDY ETFs invest in?

IJK leans toward sectors like Industrials, Technology and Healthcare. Meanwhile, MDY focuses on Finance, Industrials and Technology.

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

IJK top holdings include Twilio, Inc., TechnipFMC plc and Curtiss-Wright Corp.. MDY holds in its top three: Illumina, Inc., Twilio, Inc. and TechnipFMC plc.

Which ETF is more diversified: IJK or MDY?

IJK holds 246 securities with 19.32% of its assets in the top 15. MDY has 400 securities and a top 15 weight of 10.46%.

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