PIOvsFIWETF Comparison
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Invesco Global Water ETF (PIO) and First Trust ISE Water Index Fund ETF (FIW) belong to the same industry segment: Natural Resources. PIO's top 3 sector exposures are Industrials, Utilities and Non-Energy Materials. In contrast, FIW's top sector exposures are Industrials, Non-Energy Materials and Healthcare. PIO is more expensive with a Total Expense Ratio (TER) of 0.75%, versus 0.51% for FIW. PIO is up 1.29% year-to-date (YTD) with -$3M in YTD flows. FIW performs worse with -0.62% YTD performance, and -$42M in YTD flows. Run a side-by-side ETF comparison of PIO and FIW 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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PIO vs FIW performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | PIO FIW | -1.35%+0.36% | -3.68%-0.47% | +1.29%-0.62% | +0.70%-1.09% | +23.89%+20.01% | +13.23%+29.21% |
| Flows | PIO FIW | -+$11M | --$4M | -$3M-$42M | -$3M-$8M | -$59M+$117M | -$40M+$408M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | PIO FIW | +15.85%+17.01% | +15.36%+16.12% | +15.29%+16.66% | +16.48%+18.68% |
| Max drawdown | PIO FIW | -7.50%-8.05% | -13.21%-13.79% | -17.07%-18.25% | -34.20%-28.49% |
| Max drawdown duration | PIO FIW | 82d58d | 151d183d | 227d238d | 819d710d |
Trading data
PIO | FIW | |
Last sale 7/28/2026 at 1:30 PM | $44.88 | $111.56 |
| Previous close 07/27/2026 | $44.38 | $108.36 |
| Consolidated volume 07/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
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PIO | FIW | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 7/28/2026 at 1:30 PM
Live
Closed
PIO | FIW | |
|---|---|---|
| Last price | $44.88 | $111.56 |
| 1D performance | +1.12% | +2.95% |
| AuM | $270.70 M | $1.83 B |
| E/R | 0.75% | 0.51% |
Characteristics
PIO | FIW | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | Invesco | First Trust |
| Benchmark | NASDAQ OMX Global Water Index | ISE Clean Edge Water Index |
| N° of holdings | 40 | 36 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 13, 2007 | May 8, 2007 |
| ESG | Yes | Yes |
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Exposure
Countries
PIO
USA
40.68%
United Kingdom
15.22%
Japan
12.32%
Brazil
10.22%
Switzerland
8.09%
Other
13.47%
FIW
USA
91.45%
Other
8.55%
Sectors
PIO
Industrials
42.25%
Utilities
17.57%
Non-Energy Materi.
16.28%
Healthcare
10.36%
Technology
8.07%
Other
5.47%
FIW
Industrials
48.44%
Non-Energy Materi.
14.34%
Healthcare
12.99%
Utilities
11.32%
Consumer Non-Cycl.
8.53%
Other
4.38%
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Diversification
PIO
Total weight of top 15 holdings out of 15
73.12%
FIW
Total weight of top 15 holdings out of 15
58.3%
Top 15 holdings
Data as of June 30, 2026
PIO
Ecolab, Inc.
8.60%
Pentair plc
8.37%
Roper Technologies, Inc.
8.07%
Ebara Corp.
7.32%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP
6.82%
Ferguson Enterprises, Inc.
4.10%
Geberit AG
3.96%
Veolia Environnement SA
3.94%
IDEXX Laboratories, Inc.
3.80%
Waters Corp.
3.79%
Companhia de Saneamento de Minas Gerais
3.40%
Xylem, Inc.
2.88%
American Water Works Co., Inc.
2.82%
Agilent Technologies, Inc.
2.78%
Halma Plc
2.46%
FIW
Waters Corp.
4.96%
Agilent Technologies, Inc.
4.60%
Roper Technologies, Inc.
4.25%
Masco Corp.
4.18%
American Water Works Co., Inc.
4.06%
IDEX Corp.
3.94%
Veralto Corp.
3.88%
Xylem, Inc.
3.79%
Ecolab, Inc.
3.78%
Ferguson Enterprises, Inc.
3.68%
Watts Water Technologies, Inc.
3.64%
Mueller Industries, Inc.
3.57%
IDEXX Laboratories, Inc.
3.43%
Jacobs Solutions, Inc.
3.31%
Advanced Drainage Systems, Inc.
3.23%
Frequently asked questions about PIO and FIW
How have the PIO and FIW ETFs performed in 2026?
As of July 27, 2026, PIO is up 1.29% year-to-date (YTD), while FIW has lost -0.62%. That puts PIO better performer ahead so far this year.
Which ETF is attracting more investor money: PIO or FIW?
Year-to-date, the PIO ETF saw -$3M in flows, compared to -$42M for FIW.
Which ETF is more volatile: PIO or FIW?
Over the past year, PIO had a volatility of 15.36%, while FIW experienced 16.12%.
Which ETF is bigger: PIO or FIW?
As of July 27, 2026, PIO holds $270.70 M in assets under management (AUM), while FIW manages $1.83 B.
What sectors do the PIO and FIW ETFs invest in?
PIO leans toward sectors like Industrials, Utilities and Non-Energy Materials. Meanwhile, FIW focuses on Industrials, Non-Energy Materials and Healthcare.
What are the top holdings of the PIO ETF and FIW ETF?
PIO top holdings include Ecolab, Inc., Pentair plc and Roper Technologies, Inc.. FIW holds in its top three: Waters Corp., Agilent Technologies, Inc. and Roper Technologies, Inc..
Which ETF is more diversified: PIO or FIW?
PIO holds 40 securities with 73.12% of its assets in the top 15. FIW has 36 securities and a top 15 weight of 58.3%.
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