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IWOvsVTWGETF Comparison

ETF 1

IWO

iShares Russell 2000 Growth ETF

This fund is part of

US Small Cap Growth

+0.66%

Full IWO fund page

VS

ETF 2

VTWG

Vanguard Russell 2000 Growth ETF

This fund is part of

US Small Cap Growth

+0.66%

Full VTWG fund page

The ETFs iShares Russell 2000 Growth ETF (IWO) and Vanguard Russell 2000 Growth ETF (VTWG) track the Russell 2000 Growth Total Return Index - USD and belong to the same industry segment: US Small Cap Growth. Both ETFs have the same top 3 sector exposures: Healthcare, Technology and Industrials. IWO is more expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.06% for VTWG. IWO is up 13.91% year-to-date (YTD) with -$570M in YTD flows. VTWG performs better with 14.04% YTD performance, and +$156M in YTD flows. Run a side-by-side ETF comparison of IWO and VTWG 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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IWO vs VTWG 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 09/11/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IWO VTWG	-5.53%-5.52%	-2.69%-2.66%	+13.91%+14.04%	+16.94%+17.11%	+59.50%+60.09%	+26.01%+26.64%
Flows	IWO VTWG	+$308M-	+$183M+$57M	-$570M+$156M	-$383M+$196M	-$720M+$239M	-$337M+$437M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IWO VTWG	+18.92%+18.95%	+22.37%+22.30%	+22.97%+22.85%	+24.72%+24.79%
Max drawdown	IWO VTWG	-7.65%-7.65%	-14.82%-14.80%	-28.47%-28.47%	-40.45%-40.46%
Max drawdown duration	IWO VTWG	44d44d	84d84d	280d280d	1409d1409d

Trading data

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	IWO	VTWG
Last sale 9/14/2026 at 4:07 PM	$366.75	$266.88
Previous close 09/11/2026	$367.63	$268.40
Consolidated volume 09/11/2026
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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	IWO	VTWG
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 9/14/2026 at 4:07 PM

Live

Closed

	IWO	VTWG
Last price	$366.75	$266.88
1D performance	-0.24%	-0.57%
AuM	$14.39 B	$1.47 B
E/R	0.24%	0.06%

Characteristics

	IWO	VTWG
Management strategy	Passive	Passive
Provider	iShares	Vanguard
Benchmark	Russell 2000 Growth Index	Russell 2000 Growth Index
N° of holdings	1095	1113
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	July 24, 2000	September 20, 2010
ESG	No	No

More IWO data on Trackinsight

More VTWG data on Trackinsight

Exposure

Countries

IWO

USA

96.07%

Other

3.93%

VTWG

USA

94.1%

Other

5.9%

Sectors

IWO

Healthcare

29.4%

Technology

17.79%

Industrials

13.73%

Finance

13.29%

Other

25.79%

VTWG

Healthcare

28.15%

Technology

17.74%

Industrials

13.58%

Finance

13.2%

Other

27.33%

Diversification

IWO

Total weight of top 15 holdings out of 15

8.65%

VTWG

Total weight of top 15 holdings out of 15

8.3%

Top 15 holdings

Data as of July 31, 2026

IWO

Moog, Inc.

0.76%

BrightSpring Health Services, Inc.

0.76%

Glaukos Corp.

0.62%

Krystal Biotech, Inc.

0.61%

Brinker International, Inc.

0.58%

Crinetics Pharmaceuticals, Inc.

0.55%

HealthEquity, Inc.

0.55%

JFrog Ltd.

0.54%

Protagonist Therapeutics, Inc.

0.54%

StoneX Group, Inc.

0.54%

Ryman Hospitality Properties, Inc.

0.53%

FirstCash Holdings, Inc.

0.53%

ESCO Technologies, Inc.

0.53%

Argan, Inc.

0.51%

InterDigital, Inc.

0.50%

VTWG

Moog, Inc.

0.70%

BrightSpring Health Services, Inc.

0.61%

Glaukos Corp.

0.60%

Brinker International, Inc.

0.58%

Krystal Biotech, Inc.

0.56%

JFrog Ltd.

0.55%

Crinetics Pharmaceuticals, Inc.

0.54%

HealthEquity, Inc.

0.54%

Protagonist Therapeutics, Inc.

0.53%

FirstCash Holdings, Inc.

0.53%

Ryman Hospitality Properties, Inc.

0.53%

StoneX Group, Inc.

0.52%

ESCO Technologies, Inc.

0.52%

InterDigital, Inc.

0.50%

Argan, Inc.

0.49%

Frequently asked questions about IWO and VTWG

How have the IWO and VTWG ETFs performed in 2026?

As of September 11, 2026, IWO is up 13.91% year-to-date (YTD), while VTWG has returned 14.04%. That puts VTWG better performer ahead so far this year.

Which ETF is attracting more investor money: IWO or VTWG?

Year-to-date, the IWO ETF saw -$570M in flows, compared to +$156M for VTWG.

Which ETF is more volatile: IWO or VTWG?

Over the past year, IWO had a volatility of 22.37%, while VTWG experienced 22.3%.

Which ETF is bigger: IWO or VTWG?

As of September 11, 2026, IWO holds $14.39 B in assets under management (AUM), while VTWG manages $1.47 B.

What sectors do the IWO and VTWG ETFs invest in?

IWO leans toward sectors like Healthcare, Technology and Industrials. Meanwhile, VTWG focuses on Healthcare, Technology and Industrials.

What are the top holdings of the IWO ETF and VTWG ETF?

IWO top holdings include Moog, Inc., BrightSpring Health Services, Inc. and Glaukos Corp.. VTWG holds in its top three: Moog, Inc., BrightSpring Health Services, Inc. and Glaukos Corp..

IWOvsVTWGETF Comparison

iShares Russell 2000 Growth ETF

Vanguard Russell 2000 Growth ETF

IWO vs VTWG 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 IWO and VTWG ETFs performed in 2026?

As of September 11, 2026, IWO is up 13.91% year-to-date (YTD), while VTWG has returned 14.04%. That puts VTWG better performer ahead so far this year.

Which ETF is attracting more investor money: IWO or VTWG?

Year-to-date, the IWO ETF saw -$570M in flows, compared to +$156M for VTWG.

Which ETF is more volatile: IWO or VTWG?

Over the past year, IWO had a volatility of 22.37%, while VTWG experienced 22.3%.

Which ETF is bigger: IWO or VTWG?

As of September 11, 2026, IWO holds $14.39 B in assets under management (AUM), while VTWG manages $1.47 B.

What sectors do the IWO and VTWG ETFs invest in?

IWO leans toward sectors like Healthcare, Technology and Industrials. Meanwhile, VTWG focuses on Healthcare, Technology and Industrials.

What are the top holdings of the IWO ETF and VTWG ETF?

IWO top holdings include Moog, Inc., BrightSpring Health Services, Inc. and Glaukos Corp.. VTWG holds in its top three: Moog, Inc., BrightSpring Health Services, Inc. and Glaukos Corp..

Which ETF is more diversified: IWO or VTWG?

IWO holds 1102 securities with 8.65% of its assets in the top 15. VTWG has 1125 securities and a top 15 weight of 8.3%.

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