IWBvsIYYETF Comparison
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iShares Russell 1000 ETF (IWB) belongs to the US Large Cap segment. iShares Dow Jones U.S. ETF (IYY) is part of the US All Cap segment. Both ETFs have the same top 3 sector exposures: Technology, Finance and Healthcare. IWB is less expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.2% for IYY. IWB is up 12.44% year-to-date (YTD) with -$2.57B in YTD flows. IYY performs better with 12.67% YTD performance, and -$23M in YTD flows. Run a side-by-side ETF comparison of IWB and IYY 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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IWB vs IYY performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWB IYY | -0.99%-1.00% | +3.70%+3.62% | +12.44%+12.67% | +16.66%+16.83% | +75.47%+75.54% | +77.12%+76.16% |
| Flows | IWB IYY | -$167M- | -$444M-$9M | -$2.57B-$23M | -$2.05B-$15M | -$2.56B+$154M | -$2.46B+$139M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWB IYY | +11.86%+11.86% | +13.00%+13.10% | +15.23%+15.31% | +17.35%+17.43% |
| Max drawdown | IWB IYY | -3.34%-3.32% | -8.86%-8.91% | -19.16%-19.25% | -25.17%-25.44% |
| Max drawdown duration | IWB IYY | 19d19d | 76d76d | 126d126d | 709d709d |
Trading data
IWB | IYY | |
Last sale 9/11/2026 at 1:30 PM | $417.91 | $185.97 |
| Previous close 09/10/2026 | $414.32 | $184.54 |
| Consolidated volume 09/10/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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IWB | IYY | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/11/2026 at 1:30 PM
Live
Closed
IWB | IYY | |
|---|---|---|
| Last price | $417.91 | $185.97 |
| 1D performance | +0.87% | +0.77% |
| AuM | $48.92 B | $3.03 B |
| E/R | 0.15% | 0.2% |
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Exposure
Countries
IWB
USA
97.59%
Other
2.41%
IYY
USA
97.4%
Other
2.6%
Sectors
IWB
Technology
42.37%
Finance
14.69%
Healthcare
9.22%
Consumer Non-Cycl.
8.65%
Industrials
8.55%
Other
16.51%
IYY
Technology
43.1%
Finance
14.57%
Healthcare
9.07%
Consumer Non-Cycl.
8.67%
Industrials
8.2%
Other
16.4%
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Diversification
IWB
Total weight of top 15 holdings out of 15
40.24%
IYY
Total weight of top 15 holdings out of 15
40.61%
Top 15 holdings
Data as of July 31, 2026
IWB
Apple, Inc.
7.01%
NVIDIA Corp.
6.62%
Microsoft Corp.
4.88%
Amazon.com, Inc.
3.32%
Alphabet, Inc.
2.83%
Broadcom Inc.
2.62%
Alphabet, Inc.
2.31%
Meta Platforms, Inc.
1.72%
Micron Technology, Inc.
1.43%
Berkshire Hathaway, Inc.
1.38%
JPMorgan Chase & Co.
1.36%
Eli Lilly & Co.
1.34%
Tesla, Inc.
1.31%
Advanced Micro Devices, Inc.
1.15%
ExxonMobil Holdings Corp.
0.95%
IYY
Apple, Inc.
7.12%
NVIDIA Corp.
6.87%
Microsoft Corp.
4.87%
Amazon.com, Inc.
3.35%
Alphabet, Inc.
2.85%
Broadcom Inc.
2.67%
Alphabet, Inc.
2.29%
Meta Platforms, Inc.
1.72%
Micron Technology, Inc.
1.43%
JPMorgan Chase & Co.
1.37%
Berkshire Hathaway, Inc.
1.36%
Eli Lilly & Co.
1.33%
Tesla, Inc.
1.26%
Advanced Micro Devices, Inc.
1.15%
ExxonMobil Holdings Corp.
0.95%
Frequently asked questions about IWB and IYY
How have the IWB and IYY ETFs performed in 2026?
As of September 11, 2026, IWB is up 12.44% year-to-date (YTD), while IYY has returned 12.67%. That puts IYY better performer ahead so far this year.
Which ETF is attracting more investor money: IWB or IYY?
Year-to-date, the IWB ETF saw -$2.57B in flows, compared to -$23M for IYY.
Which ETF is more volatile: IWB or IYY?
Over the past year, IWB had a volatility of 13%, while IYY experienced 13.1%.
Which ETF is bigger: IWB or IYY?
As of September 11, 2026, IWB holds $48.92 B in assets under management (AUM), while IYY manages $3.03 B.
What sectors do the IWB and IYY ETFs invest in?
IWB leans toward sectors like Technology, Finance and Healthcare. Meanwhile, IYY focuses on Technology, Finance and Healthcare.
What are the top holdings of the IWB ETF and IYY ETF?
IWB top holdings include Apple, Inc., NVIDIA Corp. and Microsoft Corp.. IYY holds in its top three: Apple, Inc., NVIDIA Corp. and Microsoft Corp..
Which ETF is more diversified: IWB or IYY?
IWB holds 1023 securities with 40.24% of its assets in the top 15. IYY has 966 securities and a top 15 weight of 40.61%.
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