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IWOvsVIOGETF Comparison

ETF 1

IWO

iShares Russell 2000 Growth ETF

This fund is part of

US Small Cap Growth

+0.55%

Full IWO fund page

VS

ETF 2

VIOG

Vanguard S&P Small-Cap 600 Growth ETF

This fund is part of

US Small Cap Growth

+0.55%

Full VIOG fund page

iShares Russell 2000 Growth ETF (IWO) and Vanguard S&P Small-Cap 600 Growth ETF (VIOG) belong to the same industry segment: US Small Cap Growth. IWO's top 3 sector exposures are Information Technology, Industrials and Health Care. In contrast, VIOG's top sector exposures are Industrials, Information Technology and Health Care. IWO is more expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.1% for VIOG. IWO is up 17.69% year-to-date (YTD) with -$714M in YTD flows. VIOG performs better with 20.04% YTD performance, and +$26M in YTD flows. Run a side-by-side ETF comparison of IWO and VIOG 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 VIOG 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.	IWO VIOG	+3.23%+5.08%	+20.22%+18.61%	+17.69%+20.04%	+36.25%+30.00%	+61.86%+53.08%	+27.73%+34.63%
Flows	IWO VIOG	-$85M-$17M	-$82M+$21M	-$714M+$26M	-$600M-$15M	-$877M+$168M	-$291M+$220M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IWO VIOG	+25.75%+19.78%	+22.24%+17.97%	+22.73%+19.92%	+24.68%+21.52%
Max drawdown	IWO VIOG	-6.26%-4.36%	-14.82%-9.06%	-28.47%-27.38%	-40.45%-29.24%
Max drawdown duration	IWO VIOG	13d16d	84d41d	280d414d	1409d980d

Trading data

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	IWO	VIOG
Last sale 6/15/2026 at 3:52 PM	$387.07	$146.53
Previous close 06/12/2026	$380.39	$145.27
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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	IWO	VIOG
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 6/15/2026 at 3:52 PM

Live

Closed

	IWO	VIOG
Last price	$387.07	$146.53
1D performance	+1.76%	+0.87%
AuM	$14.75 B	$1.02 B
E/R	0.24%	0.1%

Characteristics

	IWO	VIOG
Management strategy	Passive	Passive
Provider	iShares	Vanguard
Benchmark	Russell 2000 Growth Index	S&P SmallCap 600 Growth Index
N° of holdings	890	311
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	July 24, 2000	September 7, 2010
ESG	No	No

More IWO data on Trackinsight

More VIOG data on Trackinsight

Exposure

Countries

IWO

USA

92.8%

Other

7.2%

VIOG

USA

96.06%

Other

3.94%

Sectors

IWO

Information Techn.

21.84%

Industrials

21.02%

Health Care

19.04%

Consumer Discreti.

7.83%

Other

30.27%

VIOG

Industrials

20.06%

Information Techn.

16.87%

Health Care

12.74%

Financials

12.15%

Consumer Discreti.

10.85%

Other

27.34%

Diversification

IWO

Total weight of top 15 holdings out of 15

15.88%

VIOG

Total weight of top 15 holdings out of 15

15.54%

Top 15 holdings

Data as of April 30, 2026

IWO

BLOOM ENERGY CORP

3.64%

CREDO TECHNOLOGY GROUP HOLDING

1.65%

FABRINET

1.45%

IONQ

0.92%

STERLING INFRASTRUCTURE INC

0.90%

ADVANCED ENERGY INDUSTRIES

0.85%

US65290E1010

0.82%

MODINE MNFC CO

0.78%

SITIME CORP

0.74%

RAMBUS

0.73%

DYCOM INDUSTRIES

0.71%

VIAVI SOLUTIONS INC

0.71%

KRATOS DEFENSE AND SECURITY SOLS

0.67%

BRIDGEBIO PHARMA

0.66%

GUARDANT HEALTH INC

0.64%

VIOG

VIAVI SOLUTIONS INC

1.45%

SANMINA CORP

1.42%

FORMFACTOR

1.26%

PRIMORIS SERVICES

1.17%

ARGAN

1.11%

VIASAT

1.07%

ESCO TECHNOLOGIES

1.00%

POWELL INDUSTRIES

0.94%

ZURN WATER SOLUTIONS CORP

0.92%

US3004261034

0.90%

FEDERAL SIGNAL

0.90%

STONEX GROUP INC

0.89%

ARMSTRONG WORLD INDUSTRIES

0.88%

SEMTECH

0.81%

ARCHROCK

0.81%

Frequently asked questions about IWO and VIOG

How have the IWO and VIOG ETFs performed in 2026?

As of June 12, 2026, IWO is up 17.69% year-to-date (YTD), while VIOG has returned 20.04%. That puts VIOG better performer ahead so far this year.

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

Year-to-date, the IWO ETF saw -$714M in flows, compared to +$26M for VIOG.

Which ETF is more volatile: IWO or VIOG?

Over the past year, IWO had a volatility of 22.24%, while VIOG experienced 17.97%.

Which ETF is bigger: IWO or VIOG?

As of June 12, 2026, IWO holds $14.75 B in assets under management (AUM), while VIOG manages $1.02 B.

What sectors do the IWO and VIOG ETFs invest in?

IWO leans toward sectors like Information Technology, Industrials and Health Care. Meanwhile, VIOG focuses on Industrials, Information Technology and Health Care.

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

IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and FABRINET. VIOG holds in its top three: VIAVI SOLUTIONS INC, SANMINA CORP and FORMFACTOR.

IWOvsVIOGETF Comparison

iShares Russell 2000 Growth ETF

Vanguard S&P Small-Cap 600 Growth ETF

IWO vs VIOG 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 VIOG ETFs performed in 2026?

As of June 12, 2026, IWO is up 17.69% year-to-date (YTD), while VIOG has returned 20.04%. That puts VIOG better performer ahead so far this year.

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

Year-to-date, the IWO ETF saw -$714M in flows, compared to +$26M for VIOG.

Which ETF is more volatile: IWO or VIOG?

Over the past year, IWO had a volatility of 22.24%, while VIOG experienced 17.97%.

Which ETF is bigger: IWO or VIOG?

As of June 12, 2026, IWO holds $14.75 B in assets under management (AUM), while VIOG manages $1.02 B.

What sectors do the IWO and VIOG ETFs invest in?

IWO leans toward sectors like Information Technology, Industrials and Health Care. Meanwhile, VIOG focuses on Industrials, Information Technology and Health Care.

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

IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and FABRINET. VIOG holds in its top three: VIAVI SOLUTIONS INC, SANMINA CORP and FORMFACTOR.

Which ETF is more diversified: IWO or VIOG?

IWO holds 1090 securities with 15.88% of its assets in the top 15. VIOG has 340 securities and a top 15 weight of 15.54%.

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