ERII vs. WTS
ERII (Energy Recovery, Inc.) and WTS (Watts Water Technologies, Inc.) are both stocks. Both are in the Industrials sector — ERII in Pollution & Treatment Controls, WTS in Specialty Industrial Machinery. Over the past 10 years, ERII returned -1.91%/yr vs 20.05%/yr for WTS. Their 0.41 correlation means their historical movements had little consistent relationship.
Performance
ERII vs. WTS - Performance Comparison
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Returns By Period
In the year-to-date period, ERII achieves a -35.88% return, which is significantly lower than WTS's 25.73% return. Over the past 10 years, ERII has underperformed WTS with an annualized return of -1.91%, while WTS has yielded a comparatively higher 20.05% annualized return.
ERII
- 1D
- 2.61%
- 1M
- -2.15%
- 6M
- -40.71%
- YTD
- -35.88%
- 1Y
- -32.37%
- 3Y*
- -34.35%
- 5Y*
- -16.37%
- 10Y*
- -1.91%
- ALL TIME*
- -0.70%
WTS
- 1D
- 0.49%
- 1M
- -6.18%
- 6M
- 15.95%
- YTD
- 25.73%
- 1Y
- 34.48%
- 3Y*
- 23.82%
- 5Y*
- 18.97%
- 10Y*
- 20.05%
- ALL TIME*
- 11.86%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $6.83M | $6.37M | $9.54M | |
| $63.19M | $76.42M | $125.98M |
ERII vs. WTS - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
ERII Energy Recovery, Inc. | -35.88% | -8.23% | -21.97% | -8.05% | -4.65% | 57.55% | 39.33% | 45.47% | -23.09% | -15.46% |
WTS Watts Water Technologies, Inc. | 25.73% | 36.85% | -1.62% | 43.57% | -24.08% | 60.63% | 23.14% | 56.20% | -14.13% | 17.84% |
Correlation
The correlation between ERII and WTS is 0.47, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.47 |
Correlation (3Y) Balances recent behavior with more history. | 0.43 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.47 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.46 |
Correlation (All Time) Calculated using the full available price history since Jul 2, 2008 | 0.41 |
Fundamentals
ERII:
$445.87M
WTS:
$11.55B
ERII:
$0.92
WTS:
$10.95
ERII:
9.38
WTS:
31.58
ERII:
0.51
WTS:
1.48
ERII:
2.43
WTS:
4.52
ERII:
$126.84M
WTS:
$2.56B
ERII:
$81.83M
WTS:
$1.26B
ERII:
$42.15M
WTS:
$556.30M
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Return for Risk
ERII vs. WTS — Risk / Return Rank
ERII
WTS
ERII vs. WTS - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Energy Recovery, Inc. (ERII) and Watts Water Technologies, Inc. (WTS). 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.
| ERII | WTS | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.87 | ||
| Sortino ratioReturn per unit of downside risk | -2.46 | ||
| Omega ratioGain probability vs. loss probability | 0.90 | 1.23 | -0.33 |
| Calmar ratioReturn relative to maximum drawdown | -0.64 | 2.13 | -2.77 |
| Martin ratioReturn relative to average drawdown | -1.07 | 4.86 | -5.93 |
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Drawdowns
ERII vs. WTS - Drawdown Comparison
The maximum ERII drawdown since its inception was -83.98%, which is greater than WTS's maximum drawdown of -63.68%. Use the drawdown chart below to compare losses from any high point for ERII and WTS.
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Drawdown Indicators
| ERII | WTS | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -83.98% | -63.68% | -20.30% |
Max Drawdown (1Y)Largest decline over 1 year | -56.27% | -15.45% | -40.82% |
Max Drawdown (3Y)Largest decline over 3 years | -71.66% | -19.54% | -52.12% |
Max Drawdown (5Y)Largest decline over 5 years | -74.13% | -44.08% | -30.05% |
Max Drawdown (10Y)Largest decline over 10 years | -74.13% | -44.08% | -30.05% |
Current DrawdownCurrent decline from peak | -71.74% | -11.66% | -60.08% |
Average DrawdownAverage peak-to-trough decline | -47.83% | -16.17% | -31.66% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 33.25% | 6.77% | +26.48% |
Volatility
ERII vs. WTS - Volatility Comparison
Energy Recovery, Inc. (ERII) has a higher volatility of 8.79% compared to Watts Water Technologies, Inc. (WTS) at 7.55%. This indicates that ERII's price experiences larger fluctuations and is considered to be riskier than WTS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ERII | WTS | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.79% | 7.55% | +1.24% |
Volatility (6M)Calculated over the trailing 6-month period | 56.18% | 21.23% | +34.95% |
Volatility (1Y)Calculated over the trailing 1-year period | 56.52% | 26.70% | +29.82% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 48.54% | 28.48% | +20.06% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 49.78% | 28.44% | +21.34% |
Dividends
ERII vs. WTS - Dividend Comparison
ERII has not paid dividends to shareholders, while WTS's dividend yield for the trailing twelve months is around 0.63%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERII Energy Recovery, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
WTS Watts Water Technologies, Inc. | 0.63% | 0.72% | 0.81% | 0.66% | 0.79% | 0.52% | 0.76% | 0.90% | 1.27% | 0.99% | 1.09% | 1.33% |
Financials
ERII vs. WTS - Financials Comparison
This section allows you to compare key financial metrics between Energy Recovery, Inc. and Watts Water Technologies, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
Frequently Asked Questions
ERII and WTS have a correlation of 0.47, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ERII has higher volatility (8.79%) compared to WTS (7.55%). In terms of maximum drawdown, ERII dropped -83.98% vs WTS's -63.68%.
WTS currently has the higher Sharpe Ratio (1.23 vs -0.63), 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.
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