FIW vs. FLOWX

Last updated Jul 18, 2026

FIW (First Trust Water ETF) and FLOWX (Fidelity Water Sustainability Fund) are both funds - FIW is a Water Equities fund tracking the ISE Clean Edge Water Index, while FLOWX is a Energy Equities fund managed by Fidelity. Over the past 5 years, FIW returned 5.86%/yr vs 7.71%/yr for FLOWX. Their correlation of 0.93 suggests significant overlap in exposure. FIW charges 0.50%/yr vs 1.00%/yr for FLOWX.

Performance

FIW vs. FLOWX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Water ETF (FIW) and Fidelity Water Sustainability Fund (FLOWX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FIW achieves a 0.06% return, which is significantly lower than FLOWX's 4.57% return.

FIW

• 1D: -1.26%
• 1M: 3.48%
• 6M: -6.08%
• YTD: 0.06%
• 1Y: -0.03%
• 3Y*: 6.97%
• 5Y*: 5.86%
• 10Y*: 12.32%

FLOWX

• 1D: 1.05%
• 1M: 4.25%
• 6M: -0.10%
• YTD: 4.57%
• 1Y: 9.38%
• 3Y*: 11.96%
• 5Y*: 7.71%
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

FIW vs. FLOWX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
FIW First Trust Water ETF	0.06%	7.20%	8.38%	20.35%	-15.70%	32.00%	46.20%
FLOWX Fidelity Water Sustainability Fund	4.57%	18.02%	8.78%	18.58%	-19.94%	28.52%	35.89%

Correlation

The correlation between FIW and FLOWX is 0.88, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.88
Correlation (3Y) Calculated over the trailing 3-year period	0.90
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (All Time) Calculated using the full available price history since Apr 16, 2020	0.93

The correlation between FIW and FLOWX has been stable across timeframes, ranging from 0.88 to 0.93 - a consistent structural relationship.

Return for Risk

FIW vs. FLOWX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

FIW

FIW Risk / Return Rank: 10
FIW Sharpe Ratio Rank: 10
FIW Sortino Ratio Rank: 9
FIW Omega Ratio Rank: 9
FIW Calmar Ratio Rank: 10
FIW Martin Ratio Rank: 10

FLOWX

FLOWX Risk / Return Rank: 10
FLOWX Sharpe Ratio Rank: 11
FLOWX Sortino Ratio Rank: 11
FLOWX Omega Ratio Rank: 10
FLOWX Calmar Ratio Rank: 10
FLOWX Martin Ratio Rank: 9

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

FIW vs. FLOWX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Water ETF (FIW) and Fidelity Water Sustainability Fund (FLOWX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	FIW	FLOWX	Difference
Sharpe ratio: Return per unit of total volatility	-0.00	0.68	-0.68
Sortino ratio: Return per unit of downside risk	0.11	1.04	-0.93
Omega ratio: Gain probability vs. loss probability	1.01	1.12	-0.11
Calmar ratio: Return relative to maximum drawdown	-0.00	0.79	-0.79
Martin ratio: Return relative to average drawdown	-0.00	1.90	-1.91

FIW vs. FLOWX - Sharpe Ratio Comparison

The current FIW Sharpe Ratio is -0.00, which is lower than the FLOWX Sharpe Ratio of 0.68. The chart below compares the historical Sharpe Ratios of FIW and FLOWX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

FIW vs. FLOWX - Drawdown Comparison

The maximum FIW drawdown since its inception was -52.75%, which is greater than FLOWX's maximum drawdown of -30.63%. Use the drawdown chart below to compare losses from any high point for FIW and FLOWX.

Drawdown Indicators

	FIW	FLOWX	Difference
Max Drawdown Largest peak-to-trough decline	-52.75%	-30.63%	-22.12%
Max Drawdown (1Y) Largest decline over 1 year	-13.81%	-12.84%	-0.97%
Max Drawdown (3Y) Largest decline over 3 years	-18.32%	-16.13%	-2.19%
Max Drawdown (5Y) Largest decline over 5 years	-28.53%	-30.63%	+2.10%
Max Drawdown (10Y) Largest decline over 10 years	-36.60%	—	—
Current Drawdown Current decline from peak	-6.16%	-6.30%	+0.14%
Average Drawdown Average peak-to-trough decline	-8.29%	-7.39%	-0.90%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.91%	5.31%	+0.60%

Volatility

FIW vs. FLOWX - Volatility Comparison

First Trust Water ETF (FIW) has a higher volatility of 5.44% compared to Fidelity Water Sustainability Fund (FLOWX) at 4.76%. This indicates that FIW's price experiences larger fluctuations and is considered to be riskier than FLOWX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FIW	FLOWX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.44%	4.76%	+0.68%
Volatility (6M) Calculated over the trailing 6-month period	12.43%	12.03%	+0.40%
Volatility (1Y) Calculated over the trailing 1-year period	16.14%	14.81%	+1.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.47%	17.92%	+0.55%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.89%	18.13%	+1.76%

FIW vs. FLOWX - Expense Ratio Comparison

FIW has a 0.50% expense ratio, which is lower than FLOWX's 1.00% expense ratio.

Dividends

FIW vs. FLOWX - Dividend Comparison

FIW's dividend yield for the trailing twelve months is around 0.72%, less than FLOWX's 6.97% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIW First Trust Water ETF	0.72%	0.69%	0.69%	0.68%	0.67%	0.37%	0.56%	0.55%	0.73%	1.13%	0.51%	0.76%
FLOWX Fidelity Water Sustainability Fund	6.97%	2.93%	2.51%	0.42%	0.08%	1.41%	1.49%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FIW and FLOWX in my portfolio?

FIW and FLOWX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FIW or FLOWX?

FIW has higher volatility (5.44%) compared to FLOWX (4.76%). In terms of maximum drawdown, FIW dropped -52.75% vs FLOWX's -30.63%.

Which has better risk-adjusted returns?

FLOWX currently has the higher Sharpe Ratio (0.68 vs -0.00), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.