IWMvsVBETF Comparison
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iShares Russell 2000 ETF (IWM) and Vanguard Morningstar Small-Cap ETF (VB) belong to the same industry segment: US Small Cap. IWM's top 3 sector exposures are Finance, Healthcare and Technology. In contrast, VB's top sector exposures are Finance, Technology and Industrials. IWM is more expensive with a Total Expense Ratio (TER) of 0.19%, versus 0.03% for VB. IWM is up 11.93% year-to-date (YTD) with -$4.96B in YTD flows. VB performs worse with 11.84% YTD performance, and +$1.19B in YTD flows. Run a side-by-side ETF comparison of IWM and VB 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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IWM vs VB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 11/06/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWM VB | -2.66%-1.87% | -7.97%-5.12% | +11.93%+11.84% | +15.12%+15.60% | +64.36%+60.90% | +20.14%+28.59% |
| Flows | IWM VB | -$85M+$290M | +$2.32B+$354M | -$4.96B+$1.19B | -$299M+$1.13B | -$1.69B+$9.71B | -$5.28B+$13.06B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWM VB | +15.99%+14.40% | +18.64%+16.09% | +21.15%+18.57% | +22.48%+20.58% |
| Max drawdown | IWM VB | -11.10%-7.96% | -11.10%-8.96% | -27.52%-25.25% | -31.96%-28.14% |
| Max drawdown duration | IWM VB | 82d82d | 82d48d | 289d296d | 1093d980d |
Trading data
IWM | VB | |
Last sale 11/6/2026 at 2:30 PM | $273.67 | $285.64 |
| Previous close 11/04/2026 | $270.98 | $283.96 |
| Consolidated volume 11/04/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 30, 2026
1-year trailing difference
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IWM | VB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 11/6/2026 at 2:30 PM
Live
Closed
IWM | VB | |
|---|---|---|
| Last price | $273.67 | $285.64 |
| 1D performance | +0.99% | +0.59% |
| AuM | $76.58 B | $77.58 B |
| E/R | 0.19% | 0.03% |
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Exposure
Countries
IWM
USA
95.19%
Other
4.81%
VB
USA
94.65%
Other
5.35%
Sectors
IWM
Finance
25.83%
Healthcare
20.64%
Technology
12.66%
Industrials
10.38%
Other
30.5%
VB
Finance
20.82%
Technology
15.58%
Industrials
14.58%
Healthcare
13.96%
Non-Energy Materi.
8.1%
Other
26.96%
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Diversification
IWM
Total weight of top 15 holdings out of 15
4.92%
VB
Total weight of top 15 holdings out of 15
6.62%
Top 15 holdings
Data as of September 30, 2026
IWM
Twist Bioscience Corp.
0.43%
BlackRock Cash Funds - Treasury
0.38%
Moog, Inc.
0.37%
JFrog Ltd.
0.36%
10X Genomics, Inc.
0.36%
UMB Financial Corp.
0.32%
BrightSpring Health Services, Inc.
0.32%
Glaukos Corp.
0.32%
ViaSat, Inc.
0.30%
Hut 8 Corp.
0.30%
Cytokinetics, Inc.
0.30%
CareTrust REIT, Inc.
0.30%
Old National Bancorp
0.29%
FirstCash Holdings, Inc.
0.29%
Protagonist Therapeutics, Inc.
0.29%
VB
Natera, Inc.
0.72%
Twilio, Inc.
0.57%
Revolution Medicines, Inc.
0.53%
Illumina, Inc.
0.52%
Everpure, Inc.
0.52%
Okta, Inc.
0.44%
Moderna, Inc.
0.44%
EMCOR Group, Inc.
0.42%
Credo Technology Group Holding Ltd.
0.42%
Jabil, Inc.
0.38%
Williams-Sonoma, Inc.
0.34%
TechnipFMC plc
0.34%
Atmos Energy Corp.
0.33%
nVent Electric Plc
0.33%
ATI, Inc.
0.33%
Frequently asked questions about IWM and VB
How have the IWM and VB ETFs performed in 2026?
As of November 6, 2026, IWM is up 11.93% year-to-date (YTD), while VB has returned 11.84%. That puts IWM better performer ahead so far this year.
Which ETF is attracting more investor money: IWM or VB?
Year-to-date, the IWM ETF saw -$4.96B in flows, compared to +$1.19B for VB.
Which ETF is more volatile: IWM or VB?
Over the past year, IWM had a volatility of 18.64%, while VB experienced 16.09%.
Which ETF is bigger: IWM or VB?
As of November 6, 2026, IWM holds $76.58 B in assets under management (AUM), while VB manages $77.58 B.
What sectors do the IWM and VB ETFs invest in?
IWM leans toward sectors like Finance, Healthcare and Technology. Meanwhile, VB focuses on Finance, Technology and Industrials.
What are the top holdings of the IWM ETF and VB ETF?
IWM top holdings include Twist Bioscience Corp., BlackRock Cash Funds - Treasury and Moog, Inc.. VB holds in its top three: Natera, Inc., Twilio, Inc. and Revolution Medicines, Inc..
Which ETF is more diversified: IWM or VB?
IWM holds 1973 securities with 4.92% of its assets in the top 15. VB has 1297 securities and a top 15 weight of 6.62%.
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Latest news about IWM & VB
The Weekly ETF Market Monitor (October 19-23, 2026)
October 26, 2026
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September 25, 2026
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