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.
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.
Federal Signal has the GF Score of 99, which implies that the company
might have
Highest outperformance potential.
The GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation, which has been found to be closely correlated to the long-term performances of stocks by backtesting from 2006 to 2021. The stocks with a higher GF Score generally generate higher returns than those with lower GF Scores. Therefore, when picking stocks, investors should invest in companies with high GF Scores. The GF Score ranges from 0 to 100, with 100 as the highest rank.
GF Score takes following five key aspects into consideration:
Each one of these components is ranked and the ranks also have positive correlation with the long term performances of stocks. The GF score is calculated using the five key aspects of analysis. Through backtesting, we know that each of these key aspects has a different impact on the stock price performance. Thus, they are weighted differently when calculating the total score. The Profitability Rank and the Growth Rank are weighted fully, while other parameters have less weight.
Based on research and backtesting result, GuruFocus believes Federal Signal
might have
Highest outperformance potential.
Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.
Based on the historical long-term performances among five valuation aspects, the GF Score is found to be closely correlated to the long-term performances of stocks. It ranges from 0 to 100, with 100 as the highest. GuruFocus divided GF Score into following 5 categories:
GF Score
Performance Potential and All-in-One Screener Examples (1)
(1) These are some simple examples. You can access our GF Score filter under All-in-One Screener’s Fundamental tab.
Federal Signal GF Score Related Terms
STU:FSG vs TEX, AGCO, OSK: GF Score Comparison
For the Farm & Heavy Construction Machinery subindustry, Federal Signal's GF Score, along with its competitors' market caps and GF Score 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 GF Score vs Farm & Heavy Construction Machinery Industry
For the Farm & Heavy Construction Machinery industry and Industrials sector, Federal Signal's GF Score distribution charts can be found below:
* The bar in red indicates where Federal Signal's GF Score falls into.
Federal Signal (STU:FSG) has a GF Score of 99 as of Aug. 03, 2026. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Federal Signal and its competitors. This is 29% above median its historical median of 77.00. Over the past decade, Federal Signal's GF Score has ranged from 77.00 to 77.00.
Is Federal Signal's GF Score too high?
Federal Signal's current GF Score of 99 is 29% above median its 10-year median of 77.00. Over the past 10 years, this metric has ranged from a low of 77.00 to a high of 77.00. Overall, Federal Signal has a GF Score™ of 99/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Federal Signal's GF Score compare to TEX and AGCO?
Federal Signal's GF Score of 99 can be compared against companies in the Farm & Heavy Construction Machinery industry. Historically, Federal Signal's own GF Score has ranged from 77.00 to 77.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Score for a Farm & Heavy Construction Machinery company?
A good GF Score depends on the Farm & Heavy Construction Machinery industry context. However, GF Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high GF Score mean?
A high GF Score can signal that a stock is expensive relative to its fundamentals. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Federal Signal and its competitors. Federal Signal's current GF Score is 99, which is 29% above median its own 10-year median of 77.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Federal Signal stock overvalued right now?
Based on GuruFocus' analysis, Federal Signal (STU:FSG) is currently considered Fairly Valued. The stock's GF Value™ is €106.46, compared to a current price of €107.00 — trading 0.5% above its estimated fair value. The current GF Score is 99, which is 29% above median its 10-year median of 77.00. Federal Signal's overall GF Score™ is 99/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Score calculated?
GF Score is calculated from a company's financial statements. For Federal Signal (STU:FSG), the current GF Score is 99 as of Aug. 03, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Federal Signal (STU:FSG) Overvalued in 2026?
Based on GuruFocus' analysis, Federal Signal stock appears to be overvalued.
The current stock price of €107.00 is trading 0.5% above its estimated GF Value™ of €106.46.
GuruFocus considers Federal Signal to be Fairly Valued.
Key valuation signals for STU:FSG:
GF Score: 99 (29% above median its 10-year median of 77.00)
GF Value™: €106.46 vs. price of €107.00 (0.5% above fair value)
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 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.
99GF Score
Get the complete analysis for STU:FSG
GF Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
STU:FSG has been successfully added to your 
