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IWOvsVIOGETF Comparison

ETF 1

IWO

iShares Russell 2000 Growth ETF

This fund is part of

US Small Cap Growth

-0.22%

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

-0.22%

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 Health Care, Information Technology and Industrials. 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 10.61% year-to-date (YTD) with -$809M in YTD flows. VIOG performs better with 13.72% YTD performance, and -$2M 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 04/27/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IWO VIOG	+16.32%+13.46%	+3.32%+7.38%	+10.61%+13.72%	+41.72%+33.58%	+64.12%+56.02%	+17.90%+27.08%
Flows	IWO VIOG	-$129M+$3M	-$530M+$9M	-$809M-$2M	-$1.22B-$65M	-$1.05B+$143M	-$576M+$198M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IWO VIOG	+25.63%+19.94%	+21.38%+17.88%	+22.42%+20.01%	+24.55%+21.53%
Max drawdown	IWO VIOG	-12.94%-9.06%	-14.82%-9.06%	-28.47%-27.38%	-40.45%-29.24%
Max drawdown duration	IWO VIOG	76d41d	84d41d	280d414d	1409d980d

Trading data

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	IWO	VIOG
Last sale 4/28/2026 at 1:30 PM	$351.50	$136.65
Previous close 04/27/2026	$357.83	$137.83
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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	IWO	VIOG
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 4/28/2026 at 1:30 PM

Live

Closed

	IWO	VIOG
Last price	$351.50	$136.65
1D performance	-1.77%	-0.85%
AuM	$13.78 B	$938.84 M
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	897	312
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

93.17%

Other

6.83%

VIOG

USA

96.01%

Other

3.99%

Sectors

IWO

Health Care

21.43%

Information Techn.

20.12%

Industrials

19.42%

Consumer Discreti.

8.17%

Financials

7.05%

Other

23.81%

VIOG

Industrials

20.25%

Information Techn.

16.06%

Health Care

13.37%

Financials

12.22%

Consumer Discreti.

11.14%

Other

26.96%

Diversification

IWO

Total weight of top 15 holdings out of 15

13.39%

VIOG

Total weight of top 15 holdings out of 15

13.75%

Top 15 holdings

Data as of March 31, 2026

IWO

BLOOM ENERGY CORP

1.99%

FABRINET

1.26%

CREDO TECHNOLOGY GROUP HOLDING

1.02%

US65290E1010

0.94%

KRATOS DEFENSE AND SECURITY SOLS

0.86%

ADVANCED ENERGY INDUSTRIES

0.82%

STERLING INFRASTRUCTURE INC

0.81%

BRIDGEBIO PHARMA

0.79%

GUARDANT HEALTH INC

0.77%

MODINE MNFC CO

0.76%

ENSIGN GROUP

0.76%

IONQ

0.67%

DYCOM INDUSTRIES

0.66%

US78473E1038

0.65%

COEUR MINING INC

0.64%

VIOG

PRIMORIS SERVICES

1.02%

VIAVI SOLUTIONS INC

1.02%

ARGAN

1.00%

FORMFACTOR

0.99%

ESCO TECHNOLOGIES

0.96%

ARMSTRONG WORLD INDUSTRIES

0.94%

SANMINA CORP

0.94%

DIGITALOCEAN HOLDINGS

0.90%

KRYSTAL BIOTECH INC

0.88%

ZURN WATER SOLUTIONS CORP

0.88%

JOHN BEAN TECHNOLOGIES

0.88%

FEDERAL SIGNAL

0.87%

VIASAT

0.82%

BRINKER INTERNATIONAL

0.82%

PROTAGONIST THERAPEUTICS INC

0.82%

Frequently asked questions about IWO and VIOG

How have the IWO and VIOG ETFs performed in 2026?

As of April 27, 2026, IWO is up 10.61% year-to-date (YTD), while VIOG has returned 13.72%. 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 -$809M in flows, compared to -$2M for VIOG.

Which ETF is more volatile: IWO or VIOG?

Over the past year, IWO had a volatility of 21.38%, while VIOG experienced 17.88%.

Which ETF is bigger: IWO or VIOG?

As of April 27, 2026, IWO holds $13.78 B in assets under management (AUM), while VIOG manages $938.84 M.

What sectors do the IWO and VIOG ETFs invest in?

IWO leans toward sectors like Health Care, Information Technology and Industrials. 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, FABRINET and CREDO TECHNOLOGY GROUP HOLDING. VIOG holds in its top three: PRIMORIS SERVICES, VIAVI SOLUTIONS INC and ARGAN.

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 April 27, 2026, IWO is up 10.61% year-to-date (YTD), while VIOG has returned 13.72%. 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 -$809M in flows, compared to -$2M for VIOG.

Which ETF is more volatile: IWO or VIOG?

Over the past year, IWO had a volatility of 21.38%, while VIOG experienced 17.88%.

Which ETF is bigger: IWO or VIOG?

As of April 27, 2026, IWO holds $13.78 B in assets under management (AUM), while VIOG manages $938.84 M.

What sectors do the IWO and VIOG ETFs invest in?

IWO leans toward sectors like Health Care, Information Technology and Industrials. 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, FABRINET and CREDO TECHNOLOGY GROUP HOLDING. VIOG holds in its top three: PRIMORIS SERVICES, VIAVI SOLUTIONS INC and ARGAN.

Which ETF is more diversified: IWO or VIOG?

IWO holds 1099 securities with 13.39% of its assets in the top 15. VIOG has 339 securities and a top 15 weight of 13.75%.

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