IDUvsFXUETF Comparison
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iShares U.S. Utilities ETF (IDU) and First Trust Utilities AlphaDEX ETF (FXU) belong to the same industry segment: US Utilities. Both ETFs have the same top 3 sector exposures: Utilities and Industrials. IDU is less expensive with a Total Expense Ratio (TER) of 0.38%, versus 0.61% for FXU. IDU is up 4.96% year-to-date (YTD) with -$340M in YTD flows. FXU performs better with 8.27% YTD performance, and -$1.06B in YTD flows. Run a side-by-side ETF comparison of IDU and FXU 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 FXU performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 06/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IDU FXU | +1.83%+0.52% | -4.70%-2.57% | +4.96%+8.27% | +11.14%+16.63% | +46.78%+62.66% | +55.05%+73.36% |
| Flows | IDU FXU | -$95M-$38M | -$43M+$4M | -$340M-$1.06B | -$185M-$1.01B | +$58M+$195M | +$193M+$349M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IDU FXU | +17.51%+15.94% | +14.00%+13.30% | +15.48%+15.78% | +16.61%+16.77% |
| Max drawdown | IDU FXU | -8.43%-8.67% | -9.16%-8.67% | -16.72%-17.47% | -24.11%-21.82% |
| Max drawdown duration | IDU FXU | 67d64d | 106d64d | 247d275d | 610d604d |
Trading data
IDU | FXU | |
Last sale 6/15/2026 at 1:30 PM | $112.42 | $48.57 |
| Previous close 06/15/2026 | $112.58 | $48.47 |
| Consolidated volume 06/15/2026 | ||
| 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
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IDU | FXU | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 6/15/2026 at 1:30 PM
Live
Closed
IDU | FXU | |
|---|---|---|
| Last price | $112.42 | $48.57 |
| 1D performance | -0.14% | +0.21% |
| AuM | $1.38 B | $829.11 M |
| E/R | 0.38% | 0.61% |
Characteristics
IDU | FXU | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | First Trust |
| Benchmark | Russell 1000 Utilities RIC 22.5/45 Capped Index | StrataQuant Utilities Index |
| N° of holdings | 42 | 40 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 12, 2000 | May 8, 2007 |
| ESG | No | No |
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Exposure
Countries
IDU
USA
99.69%
Other
0.31%
FXU
USA
99.85%
Other
0.15%
Sectors
IDU
Utilities
89.63%
Industrials
8.9%
Other
1.46%
FXU
Utilities
92.16%
Industrials
7.7%
Other
0.15%
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Diversification
IDU
Total weight of top 15 holdings out of 15
66.45%
FXU
Total weight of top 15 holdings out of 15
56.24%
Top 15 holdings
Data as of April 30, 2026
IDU
NEXTERA ENERGY
12.22%
SOUTHERN
6.38%
DUKE ENERGY
6.03%
CONSTELLATION ENERGY CORP
5.84%
WASTE MANAGEMENT
5.15%
AMERICAN ELECTRIC POWER
4.39%
SEMPRA ENERGY
3.71%
DOMINION ENERGY
3.29%
VISTRA CORP
3.20%
ENTERGY
3.15%
XCEL ENERGY
2.94%
EXELON CORP
2.78%
REPUBLIC SVCS
2.54%
PUBLIC SRVCE ENT
2.44%
CONSOLIDATED EDISON
2.40%
FXU
UGI
4.32%
PINNACLE WEST
4.27%
EVERSOURCE ENERGY
4.13%
CONSOLIDATED EDISON
4.04%
EXELON CORP
4.00%
NFG
3.96%
EDISON INTERNATIONAL
3.87%
PG&E
3.86%
MDU RESOURCES GROUP
3.54%
NRG ENERGY
3.53%
AES
3.43%
DOMINION ENERGY
3.39%
EVERGY
3.33%
OGE ENERGY
3.31%
ESSENTIAL UTILITIES INC
3.28%
Frequently asked questions about IDU and FXU
How have the IDU and FXU ETFs performed in 2026?
As of June 15, 2026, IDU is up 4.96% year-to-date (YTD), while FXU has returned 8.27%. That puts FXU better performer ahead so far this year.
Which ETF is attracting more investor money: IDU or FXU?
Year-to-date, the IDU ETF saw -$340M in flows, compared to -$1.06B for FXU.
Which ETF is more volatile: IDU or FXU?
Over the past year, IDU had a volatility of 14%, while FXU experienced 13.3%.
Which ETF is bigger: IDU or FXU?
As of June 15, 2026, IDU holds $1.38 B in assets under management (AUM), while FXU manages $829.11 M.
What sectors do the IDU and FXU ETFs invest in?
IDU leans toward sectors like Utilities and Industrials. Meanwhile, FXU focuses on Utilities and Industrials.
What are the top holdings of the IDU ETF and FXU ETF?
IDU top holdings include NEXTERA ENERGY, SOUTHERN and DUKE ENERGY. FXU holds in its top three: UGI, PINNACLE WEST and EVERSOURCE ENERGY.
Which ETF is more diversified: IDU or FXU?
IDU holds 45 securities with 66.45% of its assets in the top 15. FXU has 40 securities and a top 15 weight of 56.24%.
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Latest news about IDU & FXU
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