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IDUvsFXUETF Comparison
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 8.67% year-to-date (YTD) with -$302M in YTD flows. FXU performs better with 11.13% 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.
IDU vs FXU performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IDU FXU | +2.59%+2.21% | +9.12%+11.73% | +8.67%+11.13% | +21.73%+28.98% | +57.33%+70.73% | +71.73%+92.99% |
| Flows | IDU FXU | +$35M+$95K | -$394M-$1.02B | -$302M-$1.06B | -$102M+$213M | +$95M+$185M | +$230M+$342M |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IDU FXU | +14.03%+12.88% | +14.87%+14.78% | +15.27%+15.81% | +16.39%+16.65% |
| Max drawdown | IDU FXU | -3.18%-2.69% | -8.38%-8.51% | -17.26%-17.58% | -24.11%-21.82% |
| Max drawdown duration | IDU FXU | 11d11d | 120d26d | 337d368d | 610d604d |
IDU | FXU | |
Last sale 3/13/2026 at 1:30 PM | $118.72 | $50.51 |
| Previous close 03/12/2026 | $117.69 | $49.98 |
| Consolidated volume 03/12/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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IDU | FXU | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
IDU | FXU | |
|---|---|---|
| Last price | $118.72 | $50.51 |
| 1D performance | +0.88% | +1.06% |
| AuM | $1.48 B | $852.49 M |
| E/R | 0.38% | 0.61% |
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 |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the IDU and FXU ETFs performed in 2026?
As of March 12, 2026, IDU is up 8.67% year-to-date (YTD), while FXU has returned 11.13%. 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 -$302M 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 14.87%, while FXU experienced 14.78%.
Which ETF is bigger: IDU or FXU?
As of March 12, 2026, IDU holds $1.48 B in assets under management (AUM), while FXU manages $852.49 M.
What sectors do the IDU and FXU ETFs invest in?
IDU leans toward sectors like Utilities and Industrials. Meanwhile, FXU focuses on Utilities.
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: CONSOLIDATED EDISON, UGI and NFG.
Which ETF is more diversified: IDU or FXU?
IDU holds 45 securities with 66.43% of its assets in the top 15. FXU has 40 securities and a top 15 weight of 56.87%.
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