Federal Signal (STU:FSG) 5-Year Sortino Ratio: N/A (As of Sep. 22, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

STU:FSG Federal Signal Corp STU:FSG
79 GF Score
Price €98.50
GF Value €109.33
Valuation Modestly Undervalued
! 1 Warning Sign
View Full Analysis

What is Federal Signal 5-Year Sortino Ratio?

The 5-Year Sortino Ratio measures the additional return that an investor receives per unit of the downside risk over the past five years. As of today (2026-09-22), Federal Signal's 5-Year Sortino Ratio is Not available.


Federal Signal  (STU:FSG) 5-Year Sortino Ratio Explanation

The 5-Year Sortino Ratio inidicates the risk-adjusted return of an investment over the past five year. It is calculated as the annualized result of the average five-year monthly excess returns divided by the standard deviation of negative returns in the five-year period. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

Differnt from the Sharpe Ratio that penalizes both upside and downside volatility equally, the Sortino Ratio penalizes only those returns falling below a user-specified target or required rate of return. The expected returns here is set to the risk-free rate as well.


Federal Signal 5-Year Sortino Ratio Related Terms


STU:FSG vs TEX, AGCO, OSK: 5-Year Sortino Ratio Comparison

For the Farm & Heavy Construction Machinery subindustry, Federal Signal's 5-Year Sortino Ratio, along with its competitors' market caps and 5-Year Sortino Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Federal Signal 5-Year Sortino Ratio vs Farm & Heavy Construction Machinery Industry

For the Farm & Heavy Construction Machinery industry and Industrials sector, Federal Signal's 5-Year Sortino Ratio distribution charts can be found below:

* The bar in red indicates where Federal Signal's 5-Year Sortino Ratio falls into.


STU:FSG
79GF Score
Federal Signal Corp STU:FSG
5-Year Sortino Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Federal Signal 5-Year Sortino Ratio Calculation

The 5-Year Sortino Ratio measures the risk-adjusted return of an investment asset or portfolio in the last five year, focusing specifically on downside risk rather than total risk. A stock / portfolio's 5-Year Sortino Ratio can be calculated by dividing the difference between the five-year average monthly returns of the investment and the risk-free rate, by the standard deviation of the downside risks over the past five year.

A downside risk is a potential loss from the asset or investment. The Downside risk here is measured by the downside deviation, which is the standard deviation of negative returns.

Is Federal Signal (STU:FSG) Overvalued in 2026?

Based on GuruFocus' analysis, Federal Signal stock appears to be undervalued. The current stock price of €98.50 is trading 9.9% below its estimated GF Value™ of €109.33. GuruFocus considers Federal Signal to be Modestly Undervalued.

Key valuation signals for STU:FSG:

  • 5-Year Sortino Ratio: N/A
  • GF Value™: €109.33 vs. price of €98.50 (9.9% below fair value)
  • GF Score™: 79/100 with 1 warning sign

No single metric tells the full story. See the STU:FSG stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Federal Signal Business Description

Other Exchanges FSS:USAFSG:Germany
Address 1333 Butterfield Road, Downers Grove, IL, USA, 60515
Federal Signal Corp designs and manufactures products and integrated solutions for municipal, governmental, industrial, and airport customers. It operates through two segments. The Environmental Solutions Group manufactures and supplies street sweeper vehicles, sewer cleaner and vacuum loader trucks, hydro-excavation trucks, high-performance water blasting equipment, dump truck bodies, and trailers. The Safety and Security Systems Group manufactures and supplies comprehensive systems and products used by law enforcement, fire rescue, and industrial sites to protect people and property. Its offerings include systems for community alerting and industrial communications. The company generates the majority of its revenue from the Environmental Solutions Group segment.
79GF Score

Get the complete analysis for STU:FSG

5-Year Sortino Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€98.50
Price
€109.33
GF Value