IDUvsXLUETF Comparison
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iShares U.S. Utilities ETF (IDU) and State Street Utilities Select Sector SPDR ETF (XLU) belong to the same industry segment: US Utilities. IDU's top 3 sector exposures are Utilities, Business Services and Energy. In contrast, XLU's top sector exposures are Utilities. IDU is more expensive with a Total Expense Ratio (TER) of 0.37%, versus 0.08% for XLU. IDU is up 3.11% year-to-date (YTD) with -$294M in YTD flows. XLU performs worse with 2.5% YTD performance, and +$1.96B in YTD flows. Run a side-by-side ETF comparison of IDU and XLU 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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IDU vs XLU performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IDU XLU | +9.22%+9.16% | -4.49%-5.44% | +3.11%+2.50% | -2.64%-3.79% | +60.62%+59.48% | +49.54%+48.89% |
| Flows | IDU XLU | -$64M+$979M | +$75M+$1.70B | -$294M+$1.96B | -$86M+$2.18B | +$165M+$4.96B | +$235M+$8.18B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IDU XLU | +14.18%+15.22% | +14.97%+15.83% | +15.14%+16.08% | +16.64%+17.48% |
| Max drawdown | IDU XLU | -12.56%-13.37% | -15.29%-16.03% | -15.29%-16.03% | -24.11%-25.30% |
| Max drawdown duration | IDU XLU | 92d92d | 240d240d | 240d240d | 610d688d |
Trading data
IDU | XLU | |
Last sale 10/28/2026 at 1:30 PM | $108.59 | $42.49 |
| Previous close 10/27/2026 | $109.84 | $42.85 |
| Consolidated volume 10/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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IDU | XLU | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/28/2026 at 1:30 PM
Live
Closed
IDU | XLU | |
|---|---|---|
| Last price | $108.59 | $42.49 |
| 1D performance | -1.14% | -0.84% |
| AuM | $1.39 B | $23.92 B |
| E/R | 0.37% | 0.08% |
Characteristics
IDU | XLU | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | Russell 1000 Utilities RIC 22.5/45 Capped Index | S&P Utilities Select Sector Index |
| N° of holdings | 46 | 31 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 12, 2000 | December 16, 1998 |
| ESG | No | No |
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Exposure
Countries
IDU
USA
99.82%
Other
0.18%
XLU
USA
99.55%
Other
0.45%
Sectors
IDU
Utilities
88.77%
Business Services
9.85%
Other
1.39%
XLU
Utilities
99.55%
Other
0.45%
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Diversification
IDU
Total weight of top 15 holdings out of 15
65.83%
XLU
Total weight of top 15 holdings out of 15
72.44%
Top 15 holdings
Data as of August 31, 2026
IDU
NextEra Energy, Inc.
11.10%
The Southern Co.
6.41%
Duke Energy Corp.
6.03%
Constellation Energy Corp.
5.69%
Waste Management, Inc.
5.26%
American Electric Power Co., Inc.
4.31%
Dominion Energy, Inc.
3.75%
Sempra
3.45%
Entergy Corp.
3.14%
Xcel Energy, Inc.
3.05%
Vistra Corp.
2.98%
Exelon Corp.
2.89%
Republic Services, Inc.
2.84%
Consolidated Edison, Inc.
2.55%
Public Service Enterprise Group, Inc.
2.36%
XLU
NextEra Energy, Inc.
13.03%
The Southern Co.
7.53%
Duke Energy Corp.
7.09%
Constellation Energy Corp.
6.67%
American Electric Power Co., Inc.
5.06%
Dominion Energy, Inc.
4.41%
Sempra
4.05%
Entergy Corp.
3.69%
Xcel Energy, Inc.
3.59%
Exelon Corp.
3.40%
Vistra Corp.
3.30%
Consolidated Edison, Inc.
2.99%
Public Service Enterprise Group, Inc.
2.77%
WEC Energy Group, Inc.
2.62%
Ameren Corp.
2.23%
Frequently asked questions about IDU and XLU
How have the IDU and XLU ETFs performed in 2026?
As of October 27, 2026, IDU is up 3.11% year-to-date (YTD), while XLU has returned 2.5%. That puts IDU better performer ahead so far this year.
Which ETF is attracting more investor money: IDU or XLU?
Year-to-date, the IDU ETF saw -$294M in flows, compared to +$1.96B for XLU.
Which ETF is more volatile: IDU or XLU?
Over the past year, IDU had a volatility of 14.97%, while XLU experienced 15.83%.
Which ETF is bigger: IDU or XLU?
As of October 27, 2026, IDU holds $1.39 B in assets under management (AUM), while XLU manages $23.92 B.
What sectors do the IDU and XLU ETFs invest in?
IDU leans toward sectors like Utilities and Business Services. Meanwhile, XLU focuses on Utilities.
What are the top holdings of the IDU ETF and XLU ETF?
IDU top holdings include NextEra Energy, Inc., The Southern Co. and Duke Energy Corp.. XLU holds in its top three: NextEra Energy, Inc., The Southern Co. and Duke Energy Corp..
Which ETF is more diversified: IDU or XLU?
IDU holds 46 securities with 65.83% of its assets in the top 15. XLU has 31 securities and a top 15 weight of 72.44%.
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Latest news about IDU & XLU
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Investing in Sector ETFs: Consumer Staples, Healthcare, & Utilities
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May 2024 U.S. Sector ETFs Inflows and Outflows Breakdown
May 22, 2024
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May 2024 U.S. Sector ETFs Inflows and Outflows Breakdown
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Utilities Sector: From Laggard to Leader Amidst Expected Rate Cuts
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IDU
XLU
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