NPO vs. FSS
NPO (EnPro Industries, Inc.) and FSS (Federal Signal Corporation) are both stocks. Both are in the Industrials sector — NPO in Specialty Industrial Machinery, FSS in Pollution & Treatment Controls. Over the past 10 years, NPO returned 22.44%/yr vs 25.49%/yr for FSS. A 0.53 correlation means they provide meaningful diversification when combined.
Performance
NPO vs. FSS - Performance Comparison
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Returns By Period
In the year-to-date period, NPO achieves a 51.37% return, which is significantly higher than FSS's 10.35% return. Over the past 10 years, NPO has underperformed FSS with an annualized return of 22.44%, while FSS has yielded a comparatively higher 25.49% annualized return.
NPO
- 1D
- -1.59%
- 1M
- -9.72%
- 6M
- 34.08%
- YTD
- 51.37%
- 1Y
- 59.38%
- 3Y*
- 32.79%
- 5Y*
- 29.98%
- 10Y*
- 22.44%
FSS
- 1D
- 1.46%
- 1M
- 6.03%
- 6M
- 2.50%
- YTD
- 10.35%
- 1Y
- 12.81%
- 3Y*
- 24.18%
- 5Y*
- 26.16%
- 10Y*
- 25.49%
NPO vs. FSS - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
NPO EnPro Industries, Inc. | 51.37% | 24.95% | 10.85% | 45.63% | -0.19% | 47.48% | 15.05% | 13.05% | -34.87% | 40.54% |
FSS Federal Signal Corporation | 10.35% | 18.21% | 21.05% | 66.26% | 8.22% | 31.80% | 3.99% | 63.92% | 0.39% | 30.79% |
Correlation
The correlation between NPO and FSS is 0.54, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.54 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.62 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.63 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.62 |
Correlation (All Time) Calculated using the full available price history since May 24, 2002 | 0.53 |
The correlation between NPO and FSS shifts across timeframes, from 0.53 (all time) to 0.63 (5 years), reflecting how their relationship changes across market environments.
Fundamentals
NPO:
$6.83B
FSS:
$7.29B
NPO:
$3.07
FSS:
$4.40
NPO:
105.31
FSS:
27.13
NPO:
3.87
FSS:
1.06
NPO:
3.90
FSS:
3.14
NPO:
$1.17B
FSS:
$2.34B
NPO:
$499.30M
FSS:
$670.20M
NPO:
$127.70M
FSS:
$435.10M
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Return for Risk
NPO vs. FSS — Risk / Return Rank
NPO
FSS
NPO vs. FSS - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for EnPro Industries, Inc. (NPO) and Federal Signal Corporation (FSS). 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.
| NPO | FSS | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.27 | ||
| Sortino ratioReturn per unit of downside risk | +1.36 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.10 | +0.16 |
| Calmar ratioReturn relative to maximum drawdown | 3.40 | 0.68 | +2.72 |
| Martin ratioReturn relative to average drawdown | 10.09 | 1.15 | +8.94 |
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Drawdowns
NPO vs. FSS - Drawdown Comparison
The maximum NPO drawdown since its inception was -73.26%, smaller than the maximum FSS drawdown of -83.43%. Use the drawdown chart below to compare losses from any high point for NPO and FSS.
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Drawdown Indicators
| NPO | FSS | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -73.26% | -83.43% | +10.17% |
Max Drawdown (1Y)Largest decline over 1 year | -17.56% | -19.04% | +1.48% |
Max Drawdown (3Y)Largest decline over 3 years | -33.72% | -31.54% | -2.18% |
Max Drawdown (5Y)Largest decline over 5 years | -33.80% | -32.96% | -0.84% |
Max Drawdown (10Y)Largest decline over 10 years | -65.78% | -32.96% | -32.82% |
Current DrawdownCurrent decline from peak | -16.58% | -10.73% | -5.85% |
Average DrawdownAverage peak-to-trough decline | -19.90% | -22.53% | +2.63% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.90% | 11.13% | -5.23% |
Volatility
NPO vs. FSS - Volatility Comparison
EnPro Industries, Inc. (NPO) has a higher volatility of 14.37% compared to Federal Signal Corporation (FSS) at 12.25%. This indicates that NPO's price experiences larger fluctuations and is considered to be riskier than FSS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| NPO | FSS | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 14.37% | 12.25% | +2.12% |
Volatility (6M)Calculated over the trailing 6-month period | 28.16% | 25.72% | +2.44% |
Volatility (1Y)Calculated over the trailing 1-year period | 36.84% | 36.74% | +0.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 35.44% | 31.06% | +4.38% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 37.64% | 31.77% | +5.87% |
Dividends
NPO vs. FSS - Dividend Comparison
NPO's dividend yield for the trailing twelve months is around 0.39%, less than FSS's 0.49% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSS Federal Signal Corporation | 0.49% | 0.52% | 0.52% | 0.51% | 0.77% | 0.83% | 0.96% | 0.99% | 1.56% | 1.39% | 1.79% | 1.58% |
NPO EnPro Industries, Inc. | 0.39% | 0.58% | 0.70% | 0.74% | 1.03% | 0.98% | 1.38% | 1.50% | 1.60% | 0.94% | 1.25% | 1.82% |
Financials
NPO vs. FSS - Financials Comparison
This section allows you to compare key financial metrics between EnPro Industries, Inc. and Federal Signal Corporation. 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
NPO vs. FSS - Profitability Comparison
NPO - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, EnPro Industries, Inc. reported a gross profit of 130.00M and revenue of 303.00M. Therefore, the gross margin over that period was 42.9%.
FSS - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, Federal Signal Corporation reported a gross profit of 179.40M and revenue of 625.60M. Therefore, the gross margin over that period was 28.7%.
NPO - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, EnPro Industries, Inc. reported an operating income of 43.50M and revenue of 303.00M, resulting in an operating margin of 14.4%.
FSS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Federal Signal Corporation reported an operating income of 99.70M and revenue of 625.60M, resulting in an operating margin of 15.9%.
NPO - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, EnPro Industries, Inc. reported a net income of 27.40M and revenue of 303.00M, resulting in a net margin of 9.0%.
FSS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Federal Signal Corporation reported a net income of 70.40M and revenue of 625.60M, resulting in a net margin of 11.3%.
Frequently Asked Questions
NPO and FSS have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
NPO has higher volatility (14.37%) compared to FSS (12.25%). In terms of maximum drawdown, NPO dropped -73.26% vs FSS's -83.43%.
NPO currently has the higher Sharpe Ratio (1.62 vs 0.35), 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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