Is DCI a Buy or a Sell? The Bull and Bear Case (2026)

That depends on which case you find more convincing, and both are on this page. The bull case rests on Replacement filters as the recurring base, with revenue (ttm) at ~$3.81B (+4.4% YoY). The bear case rests on mobile Solutions ties a majority of revenue to off-road and on-road equipment cycles, so agriculture, construction and truck build rates set the direction of first-fit volumes regardless of how steady the aftermarket is. Analysts covering it are spread from $79.00 to $123.00, which is itself a signal that this is genuinely contested. If you believe the thesis, the real questions become sizing and overlap rather than timing. Walnut is not an investment adviser and this is not a recommendation.

Nobody can answer that for you, and the honest version of the question is narrower: has anything changed in the reason you bought it? The bear case on this page is the place to check. Mobile Solutions ties a majority of revenue to off-road and on-road equipment cycles, so agriculture, construction and truck build rates set the direction of first-fit volumes regardless of how steady the aftermarket is. If that risk is what you were worried about and it is now playing out, that is a real signal. If the price simply fell while the thesis held, that is a different situation entirely. The most pessimistic published target is $79.00, -17.7% from the $95.95 price, which is one analyst's downside case rather than a floor. Walnut is not an investment adviser.

Replacement filters as the recurring base. Filtration is a consumables business dressed as an equipment business. The most optimistic analyst target on DCI is $123.00, +28.2% from the $95.95 price. That figure is only reachable if this thesis works close to its best case.

Mobile Solutions ties a majority of revenue to off-road and on-road equipment cycles, so agriculture, construction and truck build rates set the direction of first-fit volumes regardless of how steady the aftermarket is. Industrial Solutions sales were roughly flat in the April quarter and management has previously trimmed guidance citing demand that softened after tariff-related pre-buying, and while Section 232 metal tariffs were characterized as not material, pricing is carrying a little over 1% of growth, which can reverse. The Facet purchase took pro forma net debt to about ~1.8x EBITDA, adds roughly ~$9 million of quarterly interest expense, and has paused share repurchases while the debt is paid down, so integration slippage would show up in both earnings and the buyback. Fiscal 2025 included a ~$62.0 million intangible-asset impairment tied to earlier acquisitions, a reminder that the bolt-on strategy in bioprocessing has already produced one write-down, and Life Sciences still earns roughly half the company margin. No active securities-fraud class action is on file against Donaldson; a 2015 revenue-recognition matter in a European gas turbine business and the investor suit that followed it are historical, and the valuation near ~26x trailing earnings leaves limited cushion if any of the above lands at once. The most pessimistic published target is $79.00, -17.7% from the current price, which is roughly what the stock is worth if these risks bite rather than the drivers.

Donaldson Company makes filtration systems for engines, industrial dust collection and life sciences, sold largely through a replacement-parts aftermarket.

Decide that in advance, because it is far harder to think clearly once a position is moving against you. The concrete tripwires here: the driver behind the bull case (Replacement filters as the recurring base) stalling in the reported numbers rather than in the narrative, the risk above (mobile Solutions ties a majority of revenue to off-road and on-road equipment cycles, so agriculture, construction and truck build rates set the direction of first-fit volumes regardless of how steady the aftermarket is) turning from a possibility into a reported fact, or the position growing large enough that a bad outcome would matter to your whole portfolio regardless of who is right.

Donaldson designs and manufactures filtration systems and replacement filters. Its products clean air and liquids in off-road and on-road engines, industrial dust collection and compressed air systems, gas turbine intakes, jet fuel supply chains, food and beverage processing, disk drives and biopharmaceutical manufacturing. Revenue is weighted toward consumable replacement parts rather than one-time equipment sales.

Yes. Donaldson Company, Inc. trades on the New York Stock Exchange under the ticker DCI, and no delisting determination, Form 25 or Form 15 is on file. The company has been publicly traded for decades and reports on a fiscal year ending July 31.

The most recent reported quarter is the third quarter of fiscal 2026, ended April 30, 2026. Sales were a record ~$995.1 million, up ~5.8% year over year, with adjusted EPS of ~$1.06 and an all-time high adjusted operating margin of ~16.6%. Fourth-quarter and full-year fiscal 2026 results are scheduled for August 26, 2026.