Health score, competitive moat, risk signals, and key metrics at a glance.
Donaldson Company, Inc. manufactures and sells filtration systems and replacement parts worldwide. The company operates through Mobile Solutions, Industrial Solutions, and Life Sciences segments. The Mobile Solutions segment provides replacement filters for air and liquid filtration applications, such as air filtration systems, fuel, lube and hydraulic systems, emissions systems and sensors, indicators, and monitoring systems. This segment sells its products to original equipment manufacturers (OEMs) in the construction, mining, agriculture, and transportation markets; and to independent distributors, and OEM dealer networks. The Industrial Solutions segment offers dust, fume, and mist collectors; compressed air and industrial gasses purification systems; air inlet systems and filtration for power generation; ancillary components; replacement parts; performance monitoring and service; and hydraulic and lubricated rotating equipment applications, as well as gas and liquid filtration for industrial processes and connected services. It also sells aerospace and defense products comprising of air, fuel, lubrication and hydraulic filtration for fixed-wing and rotorcraft aerospace applications and ground defense vehicle and naval platforms. This segment sells its products to various distributors, OEMs, and end-users. The Life Sciences segment provides micro-environment gas and liquid filtration for food, beverage, and industrial processes; bioprocessing equipment that includes bioreactors and fermenters; and bioprocessing consumables, such as chromatography devices, reagents and filters, and polytetrafluoroethylene membrane-based products, as well as specialized air and gas filtration systems for applications, including hard disk drives, semi-conductor manufacturing and sensors, battery systems, and powertrain components to OEMs and various end-users. The company was founded in 1915 and is headquartered in Bloomington, Minnesota.
Competitive analysis based on 63 quarters of fundamental data
Operating margins are expanding at ~14.3%, suggesting durable pricing power and cost discipline.
Consistently high ROE averaging 25.9% suggests a durable competitive advantage and efficient capital allocation.
Free cash flow is consistently positive and growing — a hallmark of a capital-light business that can self-fund growth.
TTM revenue has grown consistently (6 of 7 quarters up), with ~6.2% growth over the period. Strong demand durability.
Data-driven red flags and warnings across 63 quarters
Margins are stable or improving at ~15.1% — no sign of cost or pricing stress.
FCF covers net income by 0.9x on average — earnings are well-supported by cash generation.
D/E ratio is 0.3 — conservative capital structure with low financial risk.
Revenue is stable or growing over recent quarters — demand appears durable.
Free cash flow is consistently positive — the business self-funds without external capital reliance.
Shares decreased 3.9% — net buybacks are reducing shares outstanding and boosting per-share value.
as of April 2026
Revenue, EBITDA, operating income, net income, EPS, and shares
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Operating cash flow, free cash flow, FCF margin, and earnings quality
