Sifting through countless of stocks in the Machinery industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Atmus Filtration Technologies Inc. or Federal Signal Corporation because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Atmus Filtration Technologies Inc. and Federal Signal Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Atmus Filtration Technologies Inc. and Federal Signal Corporation

Atmus Filtration Technologies Inc. designs, manufactures, and sells filtration products under the Fleetguard brand in the United States and internationally. It offers fuel filters, lube filters, air filters, crankcase ventilation, hydraulic filters and coolants and other chemicals for on-highway commercial vehicles and off-highway agriculture, construction, mining, and power generation vehicles and equipment. The company also develops filtration technologies, including filtration media, filter element formation, filtration systems integration; and service-related solutions, such as remote digital diagnostic and prognostic platforms, and analytics. Atmus Filtration Technologies Inc. was founded in 1958 and is headquartered in Nashville, Tennessee.

Federal Signal Corporation designs, manufactures, and supplies a suite of products and integrated solutions for municipal, governmental, industrial, and commercial customers in the United States, Canada, Europe, and internationally. It operates through two segments, Environmental Solutions Group, and Safety and Security Systems Group. The company offers street sweepers, sewer cleaners, industrial vacuum loaders, safe-digging trucks, dump truck bodies, and trailers, as well as waterblasting, road-marking, line-removal, metal extraction support equipment, and multi-purpose maintenance vehicles under the ELGIN, VACTOR, GUZZLER, TRUVAC, WESTECH, JETSTREAM, BLASTERS, MARK RITE LINES, HOG, NEW WAY, TRACKLESS, OX BODIES, CRYSTEEL, J-CRAFT, DURACLASS, RUGBY, TRAVIS, OSW, NTE, WTB, GROUND FORCE, TOWHAUL, BUCKS, AND SWITCH-N-GO brands; and provides refuse and recycling collection vehicles through a dealer network or direct sales to service customers. It is also involved in sale of parts, service and repair, equipment rentals, and training. The company also provides systems for community alerting, emergency vehicles, first responder interoperable communications, and industrial communications; public safety equipment, such as vehicle lightbars and sirens, industrial signaling equipment, public warning systems, and general alarm/public address systems under the Federal Signal, Federal Signal VAMA, and Victor brand names through wholesalers, distributors, independent manufacturer representatives, original equipment manufacturers, and direct sales force, as well as independent foreign distributors. Federal Signal Corporation was founded in 1901 and is based in Downers Grove, Illinois.

Latest Machinery and Atmus Filtration Technologies Inc., Federal Signal Corporation Stock News

As of April 23, 2026, Atmus Filtration Technologies Inc. had a $5.0 billion market capitalization, compared to the Machinery median of $3.9 million. Atmus Filtration Technologies Inc.’s stock is up 19.6% in 2026, down 2% in the previous five trading days and up 85.01% in the past year.

Currently, Atmus Filtration Technologies Inc.’s price-earnings ratio is 24.5. Atmus Filtration Technologies Inc.’s trailing 12-month revenue is $1.8 billion with a 11.8% net profit margin. Year-over-year quarterly sales growth most recently was 9.8%. Analysts expect adjusted earnings to reach $2.918 per share for the current fiscal year. Atmus Filtration Technologies Inc. currently has a 0.4% dividend yield.

As of April 23, 2026, Federal Signal Corporation had a $7.1 billion market cap, putting it in the 73rd percentile of all stocks. Federal Signal Corporation’s stock is up 6.8% in 2026, up 1.5% in the previous five trading days and up 58.65% in the past year.

Currently, Federal Signal Corporation’s price-earnings ratio is 29.1. Federal Signal Corporation’s trailing 12-month revenue is $2.2 billion with a 11.3% net profit margin. Year-over-year quarterly sales growth most recently was 26.5%. Analysts expect adjusted earnings to reach $4.700 per share for the current fiscal year. Federal Signal Corporation currently has a 0.5% dividend yield.

How We Compare Atmus Filtration Technologies Inc. and Federal Signal Corporation Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Atmus Filtration Technologies Inc. and Federal Signal Corporation’s stock grades to see how they measure up against one another.

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Atmus Filtration Technologies Inc. and Federal Signal Corporation Stock Value Grades

Company	Ticker	Value
Atmus Filtration Technologies Inc.	ATMU	D
Federal Signal Corporation	FSS	D

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection.

Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Atmus Filtration Technologies Inc. has a Value Score of 28, which is Expensive. Federal Signal Corporation has a Value Score of 24, which is Expensive.

The Value Stock Winner: No Clear Winner

Neither Atmus Filtration Technologies Inc. or Federal Signal Corporation has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Atmus Filtration Technologies Inc. or Federal Signal Corporation is the better investment when it comes to value.

Atmus Filtration Technologies Inc. and Federal Signal Corporation’s Momentum Grades

Company	Ticker	Momentum
Atmus Filtration Technologies Inc.	ATMU	B
Federal Signal Corporation	FSS	B

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Atmus Filtration Technologies Inc. has a Momentum Score of 78, which is Strong. Federal Signal Corporation has a Momentum Score of 69, which is Strong.

The Momentum Grade Winner: It’s a Tie!

Looking at the Momentum Grade breakdown above, both Atmus Filtration Technologies Inc. and Federal Signal Corporation have a grade of B. For those who focus solely on a company’s momentum, further research will need to be conducted into both companies to see if they fit your individual needs as an investor.

Atmus Filtration Technologies Inc. and Federal Signal Corporation’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Atmus Filtration Technologies Inc.	ATMU	B
Federal Signal Corporation	FSS	B

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Atmus Filtration Technologies Inc. has a Earnings Estimate Score of 61, which is Positive. Federal Signal Corporation has a Earnings Estimate Score of 63, which is Positive.

The Earnings Estimate Revisions Grade Winner: It’s a Tie!

Looking at the Earnings Estimate Revisions Grade breakdown above, both Atmus Filtration Technologies Inc. and Federal Signal Corporation have a grade of B. For those focusing solely on a company’s estimate revisions, other financial metrics will need to be evaluated to determine whether Atmus Filtration Technologies Inc. or Federal Signal Corporation is a better fit.

Other Atmus Filtration Technologies Inc. and Federal Signal Corporation Grades

In addition to Value, Estimate Revisions and Momentum, A+ Investor also provides grades for Growth and Quality.

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and F-Score.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Atmus Filtration Technologies Inc. and Federal Signal Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Atmus Filtration Technologies Inc. or Federal Signal Corporation Stock?

Overall, Atmus Filtration Technologies Inc. stock has a Value Score of 28, Momentum Score of 78 and Estimate Revisions Score of 61.

Federal Signal Corporation stock has a Value Score of 24, Momentum Score of 69 and Estimate Revisions Score of 63.

Comparing Atmus Filtration Technologies Inc. and Federal Signal Corporation’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.