Sifting through countless of stocks in the Machinery industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Donaldson Company, Inc. or Ingersoll Rand Inc. because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Donaldson Company, Inc. and Ingersoll Rand Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Donaldson Company, Inc. and Ingersoll Rand Inc.

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.

Ingersoll Rand Inc. provides mission-critical air, fluid, clean energy, and medical technologies services and solutions worldwide. It operates in two segments, Industrial Technologies and Services, and Precision and Science Technologies. The Industrial Technologies and Services segment designs, manufactures, markets, and services a range of air and gas compression and treatment equipment, vacuum and blower products, fluid transfer equipment, loading systems, and power tools and lifting equipment; and other specialized equipment, including aftermarket parts, consumables and services, air treatment equipment, controls, other accessories, and services under the Ingersoll Rand, Gardner Denver, Nash, CompAir, Elmo Rietschle, and other brands. The Precision and Science Technologies segment designs, manufactures, and markets diaphragm, piston, water-powered, peristaltic, gear, vane, progressive cavity, and syringe pumps; and gas boosters, hydrogen compression systems, liquid handling systems, odorant injection systems, controls, software, and other related components and accessories for precision dosing, liquid and solid transfer, dispensing, gas compression and sampling, pressure management, flow control, powder handling, and other applications under the Air Dimensions, Albin, ARO, Dosatron, Haskel, Ingersoll Rand, LMI, Maximus, Milton Roy, MP, Oberdorfer, Seepex, Thomas, Welch, Williams, YZ, and Zinnser Analytic brands. This segment’s products are used in medical, laboratory, industrial manufacturing, water and wastewater, chemical processing, clean energy, food and beverage, agriculture and other markets. It sells its products through a network of direct sales representatives and independent distributors. It has a strategic alliance with Garrett Motion. The company was formerly known as Gardner Denver Holdings, Inc. and changed its name to Ingersoll Rand Inc. in March 2020. Ingersoll Rand Inc. was founded in 1859 and is headquartered in Davidson, North Carolina.

Latest Machinery and Donaldson Company, Inc., Ingersoll Rand Inc. Stock News

As of June 12, 2026, Donaldson Company, Inc. had a $10.0 billion market capitalization, compared to the Machinery median of $3.5 million. Donaldson Company, Inc.’s stock is down 2.5% in 2026, up 3.3% in the previous five trading days and up 23.8% in the past year.

Currently, Donaldson Company, Inc.’s price-earnings ratio is 23.3. Donaldson Company, Inc.’s trailing 12-month revenue is $3.8 billion with a 11.5% net profit margin. Year-over-year quarterly sales growth most recently was 5.9%. Analysts expect adjusted earnings to reach $3.952 per share for the current fiscal year. Donaldson Company, Inc. currently has a 1.5% dividend yield.

As of June 12, 2026, Ingersoll Rand Inc. had a $29.0 billion market cap, putting it in the 89th percentile of all stocks. Ingersoll Rand Inc.’s stock is down 6.6% in 2026, up 2.4% in the previous five trading days and down 11.06% in the past year.

Currently, Ingersoll Rand Inc.’s price-earnings ratio is 50.1. Ingersoll Rand Inc.’s trailing 12-month revenue is $7.8 billion with a 7.5% net profit margin. Year-over-year quarterly sales growth most recently was 7.6%. Analysts expect adjusted earnings to reach $3.503 per share for the current fiscal year. Ingersoll Rand Inc. currently has a 0.1% dividend yield.

How We Compare Donaldson Company, Inc. and Ingersoll Rand Inc. Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Donaldson Company, Inc. and Ingersoll Rand Inc.’s stock grades to see how they measure up against one another.

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Donaldson Company, Inc. and Ingersoll Rand Inc. Growth Grades

Company	Ticker	Growth
Donaldson Company, Inc.	DCI	A
Ingersoll Rand Inc.	IR	A

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Donaldson Company, Inc. has a Growth Score of 100, which is Very Strong. Ingersoll Rand Inc. has a Growth Score of 89, which is Very Strong.

The Growth Grade Winner: It’s a Tie!

Looking at the Growth Grade breakdown above, both Donaldson Company, Inc. and Ingersoll Rand Inc. have a grade of A. For investors who focus solely on a company’s upward growth, further research should be conducted into both companies’ other financial metrics before deciding whether to invest.

Donaldson Company, Inc. and Ingersoll Rand Inc.’s Quality Grades

Company	Ticker	Quality
Donaldson Company, Inc.	DCI	A
Ingersoll Rand Inc.	IR	B

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Donaldson Company, Inc. has a Quality Score of 98, which is Very Strong. Ingersoll Rand Inc. has a Quality Score of 80, which is Strong.

The Quality Grade Winner: Donaldson Company, Inc.

As you can clearly see from the Quality Grade breakdown above, Donaldson Company, Inc. has a better overall quality grade than Ingersoll Rand Inc.. For investors who are looking for companies with higher quality than others in the same industry, Donaldson Company, Inc. could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Donaldson Company, Inc. and Ingersoll Rand Inc.’s Momentum Grades

Company	Ticker	Momentum
Donaldson Company, Inc.	DCI	C
Ingersoll Rand Inc.	IR	D

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Donaldson Company, Inc. has a Momentum Score of 53, which is Average. Ingersoll Rand Inc. has a Momentum Score of 26, which is Weak.

The Momentum Stock Winner: No Clear Winner

Neither Donaldson Company, Inc. or Ingersoll Rand Inc. has a strong enough Momentum Grade to be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Donaldson Company, Inc. or Ingersoll Rand Inc. is the better investment when it comes to momentum.

Other Donaldson Company, Inc. and Ingersoll Rand Inc. Grades

In addition to Quality, Growth and Momentum, A+ Investor also provides grades for Value and Estimate Revisions.

Earnings estimate revisions scores take into account the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, surprises beget further surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Donaldson Company, Inc. and Ingersoll Rand Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Donaldson Company, Inc. or Ingersoll Rand Inc. Stock?

Overall, Donaldson Company, Inc. stock has a Growth Score of 100, Momentum Score of 53 and Quality Score of 98.

Ingersoll Rand Inc. stock has a Growth Score of 89, Momentum Score of 26 and Quality Score of 80.

Comparing Donaldson Company, Inc. and Ingersoll Rand Inc.’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.