WPRT vs ATMU

For growth investors, Atmus Filtration Technologies Inc.

(ATMU) is the stronger pick with 5. 7% revenue growth year-over-year, versus -8. 9% for Westport Fuel Systems Inc. (WPRT). 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.

Over the past 5 years, Atmus Filtration Technologies Inc.

(ATMU) delivered a total return of +155. 0%, compared to -96. 9% for Westport Fuel Systems Inc. (WPRT). Over 10 years, the gap is even starker: ATMU returned +155. 0% versus WPRT's -91. 9%. 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), Westport Fuel Systems Inc.

(WPRT) is the lower-risk stock at 0. 88β versus Atmus Filtration Technologies Inc. 's 1. 34β — meaning ATMU is approximately 52% more volatile than WPRT relative to the S&P 500. On balance sheet safety, Westport Fuel Systems Inc. (WPRT) carries a lower debt/equity ratio of 39% versus 151% for Atmus Filtration Technologies Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Atmus Filtration Technologies Inc.

(ATMU) is pulling ahead at 5. 7% versus -8. 9% for Westport Fuel Systems Inc. (WPRT). On earnings-per-share growth, the picture is similar: Westport Fuel Systems Inc. grew EPS 56. 9% year-over-year, compared to 12. 6% for Atmus Filtration Technologies Inc.. Over a 3-year CAGR, ATMU leads at 4. 1% 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 -7. 2% for Westport Fuel Systems Inc. — 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 -8. 2% for WPRT. At the gross margin level — before operating expenses — ATMU leads at 28. 9%, 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.

In this comparison, ATMU (0.

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

For long-horizon retirement investors, Westport Fuel Systems Inc.

(WPRT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 88)). Both have compounded well over 10 years (WPRT: -91. 9%, 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.

These companies operate in different sectors (WPRT (Consumer Cyclical) and ATMU (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

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.