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IWOvsVTWGETF Comparison

ETF 1
IWO

iShares Russell 2000 Growth ETF

This fund is part of
US Small Cap Growth
-2.45%
Full IWO fund page
VS
ETF 2
VTWG

Vanguard Russell 2000 Growth ETF

This fund is part of
US Small Cap Growth
-2.45%
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: Health Care, Information Technology and Industrials. IWO is more expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.06% for VTWG. IWO is down -2.1% year-to-date (YTD) with -$648M in YTD flows. VTWG performs better with -2.09% YTD performance, and +$68M 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

-4.0-2.00.02.0%Feb 12Feb 20Feb 27Mar 6

Cumulative Flows

-200 M-150 M-100 M-50 M0 MFeb 12Feb 20Feb 27Mar 6

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Historic performance and flows
Data as of 03/12/2026
1M3MYTD1Y3Y5Y
Perf.
IWO
VTWG
-4.45%-4.44%
-4.66%-4.63%
-2.10%-2.09%
+22.80%+22.99%
+48.61%+49.21%
+3.15%+3.62%
Flows
IWO
VTWG
-$134M+$11M
-$585M+$114M
-$648M+$68M
-$808M+$71M
-$696M+$202M
-$537M+$342M
Volatility and drawdown
3M1Y3Y5Y
Volatility
IWO
VTWG
+21.35%+21.06%
+25.14%+25.08%
+22.19%+22.07%
+24.58%+24.70%
Max drawdown
IWO
VTWG
-10.53%-10.52%
-17.18%-17.20%
-28.47%-28.47%
-40.45%-40.46%
Max drawdown duration
IWO
VTWG
49d49d
46d46d
280d280d
1409d1409d
Trading data

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IWO
VTWG
Last sale
3/13/2026 at 1:31 PM
$319.85
$231.03
Previous close
03/12/2026
$324.87
$237.06
Consolidated volume
03/12/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
Replication quality
Data as of February 27, 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
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Main metrics
Last update 3/13/2026 at 1:31 PM
Live
Closed
IWO
VTWG
Last price
$319.85
$231.03
1D performance
-1.55%
-2.54%
AuM$12.36 B$1.19 B
E/R0.24%0.06%
Characteristics
IWO
VTWG
Management strategyPassivePassive
ProvideriSharesVanguard
BenchmarkRussell 2000 Growth IndexRussell 2000 Growth Index
N° of holdings906914
Asset classEquitiesEquities
Trailing 12m distribution yield
Join
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Inception dateJuly 24, 2000September 20, 2010
ESGNoNo
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Exposure

Countries

IWO
USA
92.98%
Other
7.02%
VTWG
USA
91.97%
Other
8.03%

Sectors

IWO
Health Care
21.61%
Information Techn.
20.47%
Industrials
19.92%
Consumer Discreti.
8.05%
Financials
7.76%
Other
22.2%
VTWG
Health Care
21.66%
Information Techn.
20.12%
Industrials
19.67%
Consumer Discreti.
8.01%
Financials
7.74%
Other
22.8%
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Diversification

IWO

Total weight of top 15 holdings out of 15

13.7%
VTWG

Total weight of top 15 holdings out of 15

13.39%

Top 15 holdings

Data as of January 31, 2026
IWO
BLOOM ENERGY CORP
2.13%
CREDO TECHNOLOGY GROUP HOLDING
1.23%
KRATOS DEFENSE AND SECURITY SOLS
1.12%
FABRINET
1.11%
IONQ
0.91%
US65290E1010
0.88%
GUARDANT HEALTH INC
0.83%
RAMBUS
0.82%
BRIDGEBIO PHARMA
0.78%
STERLING INFRASTRUCTURE INC
0.70%
AEROVIRONMENT
0.69%
DYCOM INDUSTRIES
0.64%
US78473E1038
0.63%
ADVANCED ENERGY INDUSTRIES
0.63%
ENSIGN GROUP
0.59%
VTWG
BLOOM ENERGY CORP
2.07%
CREDO TECHNOLOGY GROUP HOLDING
1.20%
FABRINET
1.11%
KRATOS DEFENSE AND SECURITY SOLS
1.08%
GUARDANT HEALTH INC
0.87%
US65290E1010
0.86%
IONQ
0.85%
RAMBUS
0.77%
BRIDGEBIO PHARMA
0.77%
STERLING INFRASTRUCTURE INC
0.67%
AEROVIRONMENT
0.66%
DYCOM INDUSTRIES
0.64%
US78473E1038
0.63%
MODINE MNFC CO
0.61%
ENSIGN GROUP
0.60%
Frequently asked questions about IWO and VTWG

How have the IWO and VTWG ETFs performed in 2026?

As of March 12, 2026, IWO is down -2.1% year-to-date (YTD), while VTWG has lost -2.09%. 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 -$648M in flows, compared to +$68M for VTWG.

Which ETF is more volatile: IWO or VTWG?

Over the past year, IWO had a volatility of 25.14%, while VTWG experienced 25.08%.

Which ETF is bigger: IWO or VTWG?

As of March 12, 2026, IWO holds $12.36 B in assets under management (AUM), while VTWG manages $1.19 B.

What sectors do the IWO and VTWG ETFs invest in?

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

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

IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and KRATOS DEFENSE AND SECURITY SOLS. VTWG holds in its top three: BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and FABRINET.

Which ETF is more diversified: IWO or VTWG?

IWO holds 1094 securities with 13.7% of its assets in the top 15. VTWG has 1112 securities and a top 15 weight of 13.39%.

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