ATMU vs CECO

For growth investors, CECO Environmental Corp.

(CECO) is the stronger pick with 38. 8% revenue growth year-over-year, versus 5. 7% for Atmus Filtration Technologies Inc. (ATMU). Atmus Filtration Technologies Inc. (ATMU) offers the better valuation at 21. 9x trailing P/E (18. 8x forward), making it the more compelling value choice. Analysts rate Atmus Filtration Technologies Inc. (ATMU) a "Buy" — based on 5 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Atmus Filtration Technologies Inc.

(ATMU) is the cheapest at 21. 9x versus CECO Environmental Corp. at 59. 4x. On forward P/E, Atmus Filtration Technologies Inc. is actually cheaper at 18. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: CECO Environmental Corp. wins at 1. 14x versus Atmus Filtration Technologies Inc. 's 2. 38x — a reasonable growth-adjusted valuation.

Over the past 5 years, CECO Environmental Corp.

(CECO) delivered a total return of +1003%, compared to +155. 0% for Atmus Filtration Technologies Inc. (ATMU). Over 10 years, the gap is even starker: CECO returned +1282% versus ATMU's +155. 0%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Atmus Filtration Technologies Inc.

(ATMU) is the lower-risk stock at 1. 34β versus CECO Environmental Corp. 's 1. 36β — meaning CECO is approximately 2% more volatile than ATMU relative to the S&P 500. On balance sheet safety, CECO Environmental Corp. (CECO) carries a lower debt/equity ratio of 8% versus 151% for Atmus Filtration Technologies Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), CECO Environmental Corp.

(CECO) is pulling ahead at 38. 8% versus 5. 7% for Atmus Filtration Technologies Inc. (ATMU). On earnings-per-share growth, the picture is similar: CECO Environmental Corp. grew EPS 280. 6% year-over-year, compared to 12. 6% for Atmus Filtration Technologies Inc.. Over a 3-year CAGR, CECO leads at 22. 4% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Atmus Filtration Technologies Inc.

(ATMU) is the more profitable company, earning 11. 8% net margin versus 6. 5% for CECO Environmental Corp. — meaning it keeps 11. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ATMU leads at 16. 4% versus 6. 7% for CECO. At the gross margin level — before operating expenses — CECO leads at 32. 7%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, CECO Environmental Corp. (CECO) is the more undervalued stock at a PEG of 1. 14x versus Atmus Filtration Technologies Inc. 's 2. 38x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Atmus Filtration Technologies Inc. (ATMU) trades at 18. 8x forward P/E versus 48. 8x for CECO Environmental Corp. — 30. 0x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CECO: 5. 9% to $86. 20.

In this comparison, ATMU (0.

4% yield) pays a dividend. CECO does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, CECO Environmental Corp.

(CECO) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+1282% 10Y return). Both have compounded well over 10 years (CECO: +1282%, ATMU: +155. 0%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: ATMU is a small-cap quality compounder stock; CECO is a small-cap high-growth stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.