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, Healthcare and Non-Energy Materials. PIO is more expensive with a Total Expense Ratio (TER) of 0.75%, versus 0.51% for FIW. PIO is down -1.18% year-to-date (YTD) with -$5M in YTD flows. FIW performs worse with -3.1% YTD performance, and -$90M 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 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | PIO FIW | -5.59%-7.10% | +0.39%+1.67% | -1.18%-3.10% | -3.28%-5.07% | +26.50%+24.22% | +6.21%+20.66% |
| Flows | PIO FIW | -$2M-$60M | -$2M-$38M | -$5M-$90M | -$5M-$45M | -$56M+$59M | -$57M+$203M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | PIO FIW | +14.42%+17.21% | +15.47%+16.18% | +15.40%+16.86% | +16.59%+18.79% |
| Max drawdown | PIO FIW | -7.27%-7.62% | -13.21%-13.79% | -17.07%-18.25% | -34.20%-28.49% |
| Max drawdown duration | PIO FIW | 37d32d | 197d231d | 227d238d | 819d710d |
Trading data
PIO | FIW | |
Last sale 9/14/2026 at 1:30 PM | $43.09 | $105.72 |
| Previous close 09/11/2026 | $43.26 | $105.55 |
| Consolidated volume 09/11/2026 | ||
| 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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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 9/14/2026 at 1:30 PM
Live
Closed
PIO | FIW | |
|---|---|---|
| Last price | $43.09 | $105.72 |
| 1D performance | -0.39% | +0.16% |
| AuM | $261.95 M | $1.74 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
43.79%
United Kingdom
14.28%
Japan
9.89%
Brazil
9.89%
Switzerland
8.11%
Other
14.03%
FIW
USA
92.05%
Other
7.95%
Sectors
PIO
Industrials
39.24%
Utilities
17.69%
Non-Energy Materi.
16.63%
Healthcare
10.85%
Technology
9.94%
Other
5.66%
FIW
Industrials
48.61%
Healthcare
13.91%
Non-Energy Materi.
13.7%
Utilities
11.3%
Consumer Non-Cycl.
7.47%
Other
5.01%
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Diversification
PIO
Total weight of top 15 holdings out of 15
72.85%
FIW
Total weight of top 15 holdings out of 15
60.12%
Top 15 holdings
Data as of July 31, 2026
PIO
Roper Technologies, Inc.
9.94%
Ecolab, Inc.
8.79%
Pentair plc
7.45%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP
6.30%
Ebara Corp.
5.65%
IDEXX Laboratories, Inc.
4.01%
Ferguson Enterprises, Inc.
3.97%
Waters Corp.
3.92%
Veolia Environnement SA
3.92%
Geberit AG
3.87%
Companhia de Saneamento de Minas Gerais
3.59%
Xylem, Inc.
3.09%
American Water Works Co., Inc.
3.00%
Agilent Technologies, Inc.
2.92%
Stantec, Inc.
2.43%
FIW
Agilent Technologies, Inc.
5.29%
Waters Corp.
5.21%
Roper Technologies, Inc.
4.82%
Veralto Corp.
4.19%
American Water Works Co., Inc.
4.14%
IDEX Corp.
4.01%
Jacobs Solutions, Inc.
3.86%
Mueller Industries, Inc.
3.78%
Ferguson Enterprises, Inc.
3.77%
Ecolab, Inc.
3.75%
Masco Corp.
3.68%
Xylem, Inc.
3.60%
Watts Water Technologies, Inc.
3.47%
IDEXX Laboratories, Inc.
3.41%
Tetra Tech, Inc.
3.14%
Frequently asked questions about PIO and FIW
How have the PIO and FIW ETFs performed in 2026?
As of September 11, 2026, PIO is down -1.18% year-to-date (YTD), while FIW has lost -3.1%. 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 -$5M in flows, compared to -$90M for FIW.
Which ETF is more volatile: PIO or FIW?
Over the past year, PIO had a volatility of 15.47%, while FIW experienced 16.18%.
Which ETF is bigger: PIO or FIW?
As of September 11, 2026, PIO holds $261.95 M in assets under management (AUM), while FIW manages $1.74 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, Healthcare and Non-Energy Materials.
What are the top holdings of the PIO ETF and FIW ETF?
PIO top holdings include Roper Technologies, Inc., Ecolab, Inc. and Pentair plc. FIW holds in its top three: Agilent Technologies, Inc., Waters Corp. and Roper Technologies, Inc..
Which ETF is more diversified: PIO or FIW?
PIO holds 40 securities with 72.85% of its assets in the top 15. FIW has 36 securities and a top 15 weight of 60.12%.
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