Donaldson Company (DCI) has put mergers and acquisitions in focus after its fourth quarter fiscal 2026 earnings, with management highlighting disciplined deal making alongside continued cash returns to shareholders.

For context, Donaldson Company shares trade at US$95.24 after a 14.27% 90 day share price return. The 1 year total shareholder return of 17.46% and 3 year total shareholder return of 56.19% point to momentum that has been building rather than fading around the latest earnings beat and M&A focus.

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Donaldson Company now has earnings momentum, a clear M&A agenda and a share price near recent highs. The business looks solid. The next step is to test whether that strength is already fully reflected in today’s valuation.

Most Popular Narrative: 4% Undervalued

Donaldson Company’s most followed narrative pegs fair value at $98.80 compared to the latest $95.24 close. That small gap is where the story gets interesting.

Strategic investments and M&A in high-margin, structurally growing segments (e.g., Life Sciences and Food & Beverage filtration) are expected to enhance margin mix and earnings quality, with Life Sciences segment margins improving notably and diversified R&D accelerating product innovation.

Read the complete narrative. Read the complete narrative.

Want to see what sits behind that higher margin mix and earnings profile? The narrative leans on steady top line expansion, thicker margins, and a premium yet not extreme future earnings multiple. Curious which assumptions really move the fair value needle.

Result: Fair Value of $98.80 (UNDERVALUED)

However, that 4% upside case for Donaldson Company can unravel if bioprocessing progress stays muted or if aftermarket-heavy revenue comes under pressure from changing maintenance trends.

Another View On Donaldson Company Using Earnings Multiples

The first narrative framed Donaldson Company as about 4% undervalued, with fair value at $98.80 against the $95.24 share price. A different lens using the current P/E ratio of 25.2x tells a more mixed story.

The stock trades slightly below the US Machinery industry average P/E of 26.5x and the peer average of 28.3x. At the same time, it sits above an estimated fair ratio of 22x that the market could move toward. That leaves investors weighing a modest discount to sector and peers against some valuation risk relative to the fair ratio. Which reference point matters more for you?

See what the numbers say about this price in the valuation breakdown, then compare how Donaldson stacks up against similar industrials using the screener view See what the numbers say about this price — find out in our valuation breakdown..

Next Steps

Given the constructive tone around Donaldson Company so far, it makes sense to stress test the optimism with your own checks and data views. Move quickly and weigh the upside case against the risks by running through the company’s 4 key rewards.

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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.