Donaldson Company (DCI) has just posted Q3 2026 results with revenue of US$995.1 million and net income of US$118.1 million, translating to basic EPS of US$1.02 as investors weigh the latest quarterly momentum against the past year’s trajectory. Over recent quarters, the company has seen revenue move from US$940.1 million and EPS of US$0.49 in Q3 2025 to US$995.1 million and EPS of US$1.02 in Q3 2026, while trailing twelve month EPS stands at US$3.78 on revenue of US$3.8 billion. This sets the stage for a closer look at how profit margins are shaping the story.

See our full analysis for Donaldson Company.

With the headline numbers on the table, the next step is to see how this earnings profile lines up with the dominant market narratives around Donaldson Company, and where the margin trends may tell a different story.

21.1% earnings growth supports margin story

• Over the last 12 months, earnings grew 21.1% while trailing net profit margin is 11.5% on US$3.8b of revenue, compared with 9.9% a year earlier, and Q3 2026 net income of US$118.1 million on US$995.1 million of revenue is broadly in line with that margin profile.
• Bulls argue that exposure to data center power generation, Disk Drive filtration and higher margin Life Sciences can keep profit quality strong, and the current numbers give them some backing.
  • The trailing EPS of US$3.78 and Q3 EPS of about US$1.02 sit against bullish assumptions that earnings could reach US$4.98 per share by 2029, so the recent 21.1% earnings growth and 11.5% margin help support the idea of a higher profit base, even if future margin expansion in the bullish case to 13.0% is still some distance away.
  • At the same time, current net income of US$438.8 million on a trailing basis is below the bullish narrative figure of US$564.3 million in 2029, so the recent progress in margins gives bulls a foundation, but the step up they expect is still meaningful and depends on execution in those higher margin segments.

Bulls pointing to filtration demand from AI infrastructure and higher margin Life Sciences now have fresh profit data to test their case against 🐂 Donaldson Company Bull Case

Earnings growth vs slower 5.2% revenue outlook

• Trailing revenue of US$3.8b and trailing EPS of US$3.78 sit alongside forecasts that earnings may grow about 8.4% per year while revenue is forecast at about 5.2% per year, which is below the cited 11.9% US market revenue growth rate in the data.
• Consensus narrative suggests that tighter regulations, automation and urbanization can support steady sales and higher margins, and the current figures partly line up with that but also show some tension.
  • The move in net margin from 9.9% to 11.5% over the past year fits the idea that mix shift toward segments like Life Sciences and higher aftermarket content can support better profitability, which is also echoed in the assumption that margins could reach around 13.2% in the consensus case by 2029.
  • However, with revenue forecast at 5.2% per year against the 11.9% reference rate for the broader US market, the story in the data looks more like improving profitability on moderate top line growth than a fast growing revenue story, which is where investors may need to judge how durable those margin gains can be.

P/E of 22.6x and price above DCF fair value

• Donaldson trades on a trailing P/E of 22.6x at a share price of US$85.64, compared with a Machinery industry average of 26.8x and a peer average of 29.8x, while a DCF fair value in the data of US$73.77 sits below both the current price and the analyst consensus target of US$96.40.
• Bears highlight that the stock price sitting above the DCF fair value and slower forecast revenue growth create valuation risk, and the current numbers give that caution some support.
  • The gap between the current share price of US$85.64 and the DCF fair value of US$73.77 suggests limited support from that cash flow model, even though the P/E is below peer and industry averages, which is exactly the type of mixed signal bears point to.
  • Forecast revenue growth of 5.2% per year, which trails the 11.9% figure cited for the US market, gives bears a concrete data point to pair with the DCF gap when they argue that the current price already reflects a lot of the recent 21.1% earnings growth and margin improvement.

If you are weighing a lower P/E against a price above DCF fair value, skeptics' arguments on valuation are laid out in more detail in the 🐻 Donaldson Company Bear Case

Next Steps

To see how these results tie into long-term growth, risks, and valuation, check out the full range of community narratives for Donaldson Company on Simply Wall St. Add the company to your watchlist or portfolio so you'll be alerted when the story evolves.

After weighing both the bullish and bearish arguments, it helps to look past the headlines and test the numbers yourself while sentiment is fresh. To see what is driving optimism in the data, review the 3 key rewards

See What Else Is Out There

Donaldson Company pairs solid margin trends with relatively moderate 5.2% revenue growth and a share price sitting above the cited DCF fair value.

If that mix of slower top line growth and a price above modelled fair value makes you cautious, it is worth checking the 47 high quality undervalued stocks to spot stocks where current pricing looks more attractive against fundamentals.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.