BROUGHT TO YOU BY:

ETF Portfolio Builder

New

ETF Portfolio Builder

New

IWOvsRZGETF Comparison

ETF 1

IWO

iShares Russell 2000 Growth ETF

This fund is part of

US Small Cap Growth

+2.1%

Full IWO fund page

VS

ETF 2

RZG

Invesco S&P SmallCap 600® Pure Growth ETF

This fund is part of

US Small Cap Growth

+2.1%

Full RZG fund page

iShares Russell 2000 Growth ETF (IWO) and Invesco S&P SmallCap 600® Pure Growth ETF (RZG) 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, RZG's top sector exposures are Industrials, Health Care and Financials. IWO is less expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.35% for RZG. IWO is up 20.69% year-to-date (YTD) with -$694M in YTD flows. RZG performs better with 27.74% YTD performance, and -$3M in YTD flows. Run a side-by-side ETF comparison of IWO and RZG below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.

Find out how industry players manage ETF portfolios. Discover our library of Model portfolios

IWO vs RZG performance and flow charts

Performance

Cumulative Flows

Get all the metrics on this page, and more, through a reliable ETF data feed

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 06/18/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IWO RZG	+9.15%+10.17%	+23.56%+23.51%	+20.69%+27.74%	+41.43%+42.88%	+66.14%+70.60%	+34.68%+39.48%
Flows	IWO RZG	-$84M-$3M	-$125M-$3M	-$694M-$3M	-$566M-$7M	-$701M-$21M	-$348M-$33M

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IWO RZG	+26.04%+21.59%	+22.30%+18.88%	+22.79%+20.48%	+24.71%+22.88%
Max drawdown	IWO RZG	-6.26%-4.46%	-14.82%-8.40%	-28.47%-25.62%	-40.45%-38.45%
Max drawdown duration	IWO RZG	13d28d	84d43d	280d296d	1409d1521d

Trading data

Create an account to view trading data

Join for free

	IWO	RZG
Last sale 6/18/2026 at 1:30 PM	$389.04	$69.26
Previous close 06/18/2026	$380.02	$67.88
Consolidated volume 06/18/2026
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

Create an account to view replication metrics

Join for free

Create an account to view replication quality

Join for free

	IWO	RZG
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 6/18/2026 at 1:30 PM

Live

Closed

	IWO	RZG
Last price	$389.04	$69.26
1D performance	+2.37%	+2.03%
AuM	$15.13 B	$128.19 M
E/R	0.24%	0.35%

Characteristics

	IWO	RZG
Management strategy	Passive	Passive
Provider	iShares	Invesco
Benchmark	Russell 2000 Growth Index	S&P SmallCap 600 Pure Growth Index
N° of holdings	890	119
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	July 24, 2000	March 1, 2006
ESG	No	No

More IWO data on Trackinsight

More RZG data on Trackinsight

Exposure

Countries

IWO

USA

92.8%

Other

7.2%

RZG

USA

96.17%

Other

3.83%

Sectors

IWO

Information Techn.

21.84%

Industrials

21.02%

Health Care

19.04%

Consumer Discreti.

7.83%

Other

30.27%

RZG

Industrials

19.92%

Health Care

19.69%

Financials

16.1%

Information Techn.

12.5%

Consumer Discreti.

9.54%

Other

22.25%

Diversification

IWO

Total weight of top 15 holdings out of 15

15.88%

RZG

Total weight of top 15 holdings out of 15

23.4%

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%

RZG

POWELL INDUSTRIES

2.04%

ARGAN

1.84%

ACM RESEARCH

1.74%

CLEAR SECURE

1.66%

US9129321009

1.66%

STONEX GROUP INC

1.62%

PRIMORIS SERVICES

1.56%

DXP ENTERPRISES

1.53%

US00676P1075

1.46%

BRIGHTSPHERE INVESTMENT GROUP

1.44%

PHIBRO ANIMAL /D

1.43%

EZCORP CL A NV

1.40%

PROTAGONIST THERAPEUTICS INC

1.39%

MADISON SQUARE GARDEN ENTERTAINMENT CORP

1.32%

US6496048405

1.31%

Frequently asked questions about IWO and RZG

How have the IWO and RZG ETFs performed in 2026?

As of June 18, 2026, IWO is up 20.69% year-to-date (YTD), while RZG has returned 27.74%. That puts RZG better performer ahead so far this year.

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

Year-to-date, the IWO ETF saw -$694M in flows, compared to -$3M for RZG.

Which ETF is more volatile: IWO or RZG?

Over the past year, IWO had a volatility of 22.3%, while RZG experienced 18.88%.

Which ETF is bigger: IWO or RZG?

As of June 18, 2026, IWO holds $15.13 B in assets under management (AUM), while RZG manages $128.19 M.

What sectors do the IWO and RZG ETFs invest in?

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

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

IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and FABRINET. RZG holds in its top three: POWELL INDUSTRIES, ARGAN and ACM RESEARCH.

IWOvsRZGETF Comparison

iShares Russell 2000 Growth ETF

Invesco S&P SmallCap 600® Pure Growth ETF

IWO vs RZG 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 RZG ETFs performed in 2026?

As of June 18, 2026, IWO is up 20.69% year-to-date (YTD), while RZG has returned 27.74%. That puts RZG better performer ahead so far this year.

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

Year-to-date, the IWO ETF saw -$694M in flows, compared to -$3M for RZG.

Which ETF is more volatile: IWO or RZG?

Over the past year, IWO had a volatility of 22.3%, while RZG experienced 18.88%.

Which ETF is bigger: IWO or RZG?

As of June 18, 2026, IWO holds $15.13 B in assets under management (AUM), while RZG manages $128.19 M.

What sectors do the IWO and RZG ETFs invest in?

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

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

IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and FABRINET. RZG holds in its top three: POWELL INDUSTRIES, ARGAN and ACM RESEARCH.

Which ETF is more diversified: IWO or RZG?

IWO holds 1090 securities with 15.88% of its assets in the top 15. RZG has 130 securities and a top 15 weight of 23.4%.

Expert-Built ETF Portfolios, All in One Place